Mercurial > projects > dwt2
annotate org.eclipse.swt.win32.win32.x86/src/org/eclipse/swt/internal/image/JPEGDecoder.d @ 0:6dd524f61e62
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author | Frank Benoit <benoit@tionex.de> |
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date | Mon, 02 Mar 2009 14:44:16 +0100 |
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children | 6bf2837c50fe |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2006 IBM Corporation and others. |
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3 * All rights reserved. This program and the accompanying materials |
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4 * are made available under the terms of the Eclipse Public License v1.0 |
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5 * which accompanies this distribution, and is available at |
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6 * http://www.eclipse.org/legal/epl-v10.html |
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7 * |
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8 * Contributors: |
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9 * IBM Corporation - initial API and implementation |
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10 * Port to the D programming language: |
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11 * Frank Benoit <benoit@tionex.de> |
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12 *******************************************************************************/ |
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13 module org.eclipse.swt.internal.image.JPEGDecoder; |
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14 |
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15 import org.eclipse.swt.SWT; |
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16 import java.io.InputStream; |
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17 import org.eclipse.swt.internal.image.LEDataInputStream; |
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18 import org.eclipse.swt.graphics.ImageData; |
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19 import org.eclipse.swt.graphics.ImageLoader; |
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20 import org.eclipse.swt.graphics.ImageLoaderEvent; |
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21 import org.eclipse.swt.graphics.PaletteData; |
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22 import org.eclipse.swt.graphics.RGB; |
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23 import java.lang.all; |
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24 |
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25 import tango.core.Exception; |
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26 import tango.util.Convert; |
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27 import Math = tango.math.Math; |
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28 |
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29 public class JPEGDecoder { |
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30 |
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31 static const int DCTSIZE = 8; |
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32 static const int DCTSIZE2 = 64; |
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33 static const int NUM_QUANT_TBLS = 4; |
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34 static const int NUM_HUFF_TBLS = 4; |
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35 static const int NUM_ARITH_TBLS = 16; |
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36 static const int MAX_COMPS_IN_SCAN = 4; |
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37 static const int MAX_COMPONENTS = 10; |
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38 static const int MAX_SAMP_FACTOR = 4; |
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39 static const int D_MAX_BLOCKS_IN_MCU = 10; |
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40 static const int HUFF_LOOKAHEAD = 8; |
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41 static const int MAX_Q_COMPS = 4; |
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42 static const int IFAST_SCALE_BITS = 2; |
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43 static const int MAXJSAMPLE = 255; |
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44 static const int CENTERJSAMPLE = 128; |
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45 static const int MIN_GET_BITS = 32-7; |
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46 static const int INPUT_BUFFER_SIZE = 4096; |
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47 |
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48 static const int SCALEBITS = 16; /* speediest right-shift on some machines */ |
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49 static const int ONE_HALF = 1 << (SCALEBITS-1); |
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50 |
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51 static const int RGB_RED = 2; /* Offset of Red in an RGB scanline element */ |
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52 static const int RGB_GREEN = 1; /* Offset of Green */ |
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53 static const int RGB_BLUE = 0; /* Offset of Blue */ |
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54 static const int RGB_PIXELSIZE = 3; |
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55 |
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56 static const int JBUF_PASS_THRU = 0; |
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57 static const int JBUF_SAVE_SOURCE = 1; /* Run source subobject only, save output */ |
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58 static const int JBUF_CRANK_DEST = 2; /* Run dest subobject only, using saved data */ |
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59 static const int JBUF_SAVE_AND_PASS = 3; |
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60 |
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61 static const int JPEG_MAX_DIMENSION = 65500; |
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62 static const int BITS_IN_JSAMPLE = 8; |
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63 |
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64 static const int JDITHER_NONE = 0; /* no dithering */ |
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65 static const int JDITHER_ORDERED = 1; /* simple ordered dither */ |
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66 static const int JDITHER_FS = 2; |
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67 |
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68 static const int JDCT_ISLOW = 0; /* slow but accurate integer algorithm */ |
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69 static const int JDCT_IFAST = 1; /* faster, less accurate integer method */ |
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70 static const int JDCT_FLOAT = 2; /* floating-point: accurate, fast on fast HW */ |
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71 static const int JDCT_DEFAULT = JDCT_ISLOW; |
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72 |
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73 static const int JCS_UNKNOWN = 0; /* error/unspecified */ |
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74 static const int JCS_GRAYSCALE = 1; /* monochrome */ |
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75 static const int JCS_RGB = 2; /* red/green/blue */ |
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76 static const int JCS_YCbCr = 3; /* Y/Cb/Cr (also known as YUV) */ |
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77 static const int JCS_CMYK = 4; /* C/M/Y/K */ |
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78 static const int JCS_YCCK = 5; /* Y/Cb/Cr/K */ |
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79 |
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80 static const int SAVED_COEFS = 6; |
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81 static const int Q01_POS = 1; |
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82 static const int Q10_POS = 8; |
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83 static const int Q20_POS = 16; |
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84 static const int Q11_POS = 9; |
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85 static const int Q02_POS = 2; |
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86 |
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87 static const int CTX_PREPARE_FOR_IMCU = 0; /* need to prepare for MCU row */ |
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88 static const int CTX_PROCESS_IMCU = 1; /* feeding iMCU to postprocessor */ |
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89 static const int CTX_POSTPONED_ROW = 2; /* feeding postponed row group */ |
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90 |
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91 static const int APP0_DATA_LEN = 14; /* Length of interesting data in APP0 */ |
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92 static const int APP14_DATA_LEN = 12; /* Length of interesting data in APP14 */ |
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93 static const int APPN_DATA_LEN = 14; /* Must be the largest of the above!! */ |
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94 |
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95 /* markers */ |
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96 static const int M_SOF0 = 0xc0; |
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97 static const int M_SOF1 = 0xc1; |
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98 static const int M_SOF2 = 0xc2; |
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99 static const int M_SOF3 = 0xc3; |
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100 static const int M_SOF5 = 0xc5; |
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101 static const int M_SOF6 = 0xc6; |
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102 static const int M_SOF7 = 0xc7; |
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103 static const int M_JPG = 0xc8; |
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104 static const int M_SOF9 = 0xc9; |
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105 static const int M_SOF10 = 0xca; |
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106 static const int M_SOF11 = 0xcb; |
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107 static const int M_SOF13 = 0xcd; |
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108 static const int M_SOF14 = 0xce; |
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109 static const int M_SOF15 = 0xcf; |
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110 static const int M_DHT = 0xc4; |
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111 static const int M_DAC = 0xcc; |
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112 static const int M_RST0 = 0xd0; |
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113 static const int M_RST1 = 0xd1; |
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114 static const int M_RST2 = 0xd2; |
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115 static const int M_RST3 = 0xd3; |
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116 static const int M_RST4 = 0xd4; |
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117 static const int M_RST5 = 0xd5; |
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118 static const int M_RST6 = 0xd6; |
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119 static const int M_RST7 = 0xd7; |
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120 static const int M_SOI = 0xd8; |
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121 static const int M_EOI = 0xd9; |
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122 static const int M_SOS = 0xda; |
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123 static const int M_DQT = 0xdb; |
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124 static const int M_DNL = 0xdc; |
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125 static const int M_DRI = 0xdd; |
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126 static const int M_DHP = 0xde; |
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127 static const int M_EXP = 0xdf; |
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128 static const int M_APP0 = 0xe0; |
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129 static const int M_APP1 = 0xe1; |
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130 static const int M_APP2 = 0xe2; |
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131 static const int M_APP3 = 0xe3; |
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132 static const int M_APP4 = 0xe4; |
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133 static const int M_APP5 = 0xe5; |
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134 static const int M_APP6 = 0xe6; |
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135 static const int M_APP7 = 0xe7; |
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136 static const int M_APP8 = 0xe8; |
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137 static const int M_APP9 = 0xe9; |
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138 static const int M_APP10 = 0xea; |
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139 static const int M_APP11 = 0xeb; |
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140 static const int M_APP12 = 0xec; |
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141 static const int M_APP13 = 0xed; |
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142 static const int M_APP14 = 0xee; |
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143 static const int M_APP15 = 0xef; |
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144 static const int M_JPG0 = 0xf0; |
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145 static const int M_JPG13 = 0xfd; |
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146 static const int M_COM = 0xfe; |
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147 static const int M_TEM = 0x01; |
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148 static const int M_ERROR = 0x100; |
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149 |
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150 /* Values of global_state field (jdapi.c has some dependencies on ordering!) */ |
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151 static const int CSTATE_START = 100; /* after create_compress */ |
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152 static const int CSTATE_SCANNING = 101; /* start_compress done, write_scanlines OK */ |
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153 static const int CSTATE_RAW_OK = 102; /* start_compress done, write_raw_data OK */ |
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154 static const int CSTATE_WRCOEFS = 103; /* jpeg_write_coefficients done */ |
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155 static const int DSTATE_START = 200; /* after create_decompress */ |
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156 static const int DSTATE_INHEADER = 201; /* reading header markers, no SOS yet */ |
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157 static const int DSTATE_READY = 202; /* found SOS, ready for start_decompress */ |
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158 static const int DSTATE_PRELOAD = 203; /* reading multiscan file in start_decompress*/ |
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159 static const int DSTATE_PRESCAN = 204; /* performing dummy pass for 2-pass quant */ |
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160 static const int DSTATE_SCANNING = 205; /* start_decompress done, read_scanlines OK */ |
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161 static const int DSTATE_RAW_OK = 206; /* start_decompress done, read_raw_data OK */ |
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162 static const int DSTATE_BUFIMAGE = 207; /* expecting jpeg_start_output */ |
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163 static const int DSTATE_BUFPOST = 208; /* looking for SOS/EOI in jpeg_finish_output */ |
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164 static const int DSTATE_RDCOEFS = 209; /* reading file in jpeg_read_coefficients */ |
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165 static const int DSTATE_STOPPING = 210; /* looking for EOI in jpeg_finish_decompress */ |
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166 |
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167 static const int JPEG_REACHED_SOS = 1; /* Reached start of new scan */ |
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168 static const int JPEG_REACHED_EOI = 2; /* Reached end of image */ |
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169 static const int JPEG_ROW_COMPLETED = 3; /* Completed one iMCU row */ |
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170 static const int JPEG_SCAN_COMPLETED = 4; /* Completed last iMCU row of a scan */ |
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171 |
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172 static const int JPEG_SUSPENDED = 0; /* Suspended due to lack of input data */ |
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173 static const int JPEG_HEADER_OK = 1; /* Found valid image datastream */ |
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174 static const int JPEG_HEADER_TABLES_ONLY = 2; /* Found valid table-specs-only datastream */ |
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175 |
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176 /* Function pointers */ |
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177 static const int DECOMPRESS_DATA = 0; |
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178 static const int DECOMPRESS_SMOOTH_DATA = 1; |
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179 static const int DECOMPRESS_ONEPASS = 2; |
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180 |
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181 static const int CONSUME_DATA = 0; |
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182 static const int DUMMY_CONSUME_DATA = 1; |
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183 |
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184 static const int PROCESS_DATA_SIMPLE_MAIN = 0; |
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185 static const int PROCESS_DATA_CONTEXT_MAIN = 1; |
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186 static const int PROCESS_DATA_CRANK_POST = 2; |
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187 |
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188 static const int POST_PROCESS_1PASS = 0; |
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189 static const int POST_PROCESS_DATA_UPSAMPLE = 1; |
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190 |
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191 static const int NULL_CONVERT = 0; |
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192 static const int GRAYSCALE_CONVERT = 1; |
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193 static const int YCC_RGB_CONVERT = 2; |
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194 static const int GRAY_RGB_CONVERT = 3; |
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195 static const int YCCK_CMYK_CONVERT = 4; |
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196 |
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197 static const int NOOP_UPSAMPLE = 0; |
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198 static const int FULLSIZE_UPSAMPLE = 1; |
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199 static const int H2V1_FANCY_UPSAMPLE = 2; |
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200 static const int H2V1_UPSAMPLE = 3; |
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201 static const int H2V2_FANCY_UPSAMPLE = 4; |
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202 static const int H2V2_UPSAMPLE = 5; |
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203 static const int INT_UPSAMPLE = 6; |
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204 |
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205 static const int INPUT_CONSUME_INPUT = 0; |
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206 static const int COEF_CONSUME_INPUT = 1; |
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207 |
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208 static int extend_test[] = /* entry n is 2**(n-1) */ |
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209 [ |
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210 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080, |
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211 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 |
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212 ]; |
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213 |
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214 static int extend_offset[] = /* entry n is (-1 << n) + 1 */ |
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215 [ |
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216 0, ((-1)<<1) + 1, ((-1)<<2) + 1, ((-1)<<3) + 1, ((-1)<<4) + 1, |
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217 ((-1)<<5) + 1, ((-1)<<6) + 1, ((-1)<<7) + 1, ((-1)<<8) + 1, |
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218 ((-1)<<9) + 1, ((-1)<<10) + 1, ((-1)<<11) + 1, ((-1)<<12) + 1, |
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219 ((-1)<<13) + 1, ((-1)<<14) + 1, ((-1)<<15) + 1 |
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220 ]; |
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221 |
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222 static int jpeg_natural_order[] = [ |
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223 0, 1, 8, 16, 9, 2, 3, 10, |
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224 17, 24, 32, 25, 18, 11, 4, 5, |
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225 12, 19, 26, 33, 40, 48, 41, 34, |
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226 27, 20, 13, 6, 7, 14, 21, 28, |
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227 35, 42, 49, 56, 57, 50, 43, 36, |
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228 29, 22, 15, 23, 30, 37, 44, 51, |
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229 58, 59, 52, 45, 38, 31, 39, 46, |
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230 53, 60, 61, 54, 47, 55, 62, 63, |
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231 63, 63, 63, 63, 63, 63, 63, 63, /* extra entries for safety in decoder */ |
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232 63, 63, 63, 63, 63, 63, 63, 63 |
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233 ]; |
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234 |
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235 static final class JQUANT_TBL { |
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236 /* This array gives the coefficient quantizers in natural array order |
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237 * (not the zigzag order in which they are stored in a JPEG DQT marker). |
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238 * CAUTION: IJG versions prior to v6a kept this array in zigzag order. |
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239 */ |
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240 short[DCTSIZE2] quantval;// = new short[DCTSIZE2]; /* quantization step for each coefficient */ |
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241 /* This field is used only during compression. It's initialized false when |
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242 * the table is created, and set true when it's been output to the file. |
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243 * You could suppress output of a table by setting this to true. |
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244 * (See jpeg_suppress_tables for an example.) |
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245 */ |
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246 bool sent_table; /* true when table has been output */ |
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247 } |
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248 |
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249 static final class JHUFF_TBL { |
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250 /* These two fields directly represent the contents of a JPEG DHT marker */ |
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251 byte[17] bits;// = new byte[17]; /* bits[k] = # of symbols with codes of */ |
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252 /* length k bits; bits[0] is unused */ |
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253 byte[256] huffval;// = new byte[256]; /* The symbols, in order of incr code length */ |
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254 /* This field is used only during compression. It's initialized false when |
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255 * the table is created, and set true when it's been output to the file. |
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256 * You could suppress output of a table by setting this to true. |
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257 * (See jpeg_suppress_tables for an example.) |
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258 */ |
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259 bool sent_table; /* true when table has been output */ |
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260 } |
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261 |
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262 static final class bitread_perm_state { /* Bitreading state saved across MCUs */ |
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263 int get_buffer; /* current bit-extraction buffer */ |
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264 int bits_left; /* # of unused bits in it */ |
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265 } |
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266 |
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267 static final class bitread_working_state { /* Bitreading working state within an MCU */ |
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268 /* Current data source location */ |
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269 /* We need a copy, rather than munging the original, in case of suspension */ |
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270 byte[] buffer; /* => next byte to read from source */ |
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271 int bytes_offset; |
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272 int bytes_in_buffer; /* # of bytes remaining in source buffer */ |
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273 /* Bit input buffer --- note these values are kept in register variables, |
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274 * not in this struct, inside the inner loops. |
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275 */ |
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276 int get_buffer; /* current bit-extraction buffer */ |
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277 int bits_left; /* # of unused bits in it */ |
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278 /* Pointer needed by jpeg_fill_bit_buffer. */ |
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279 jpeg_decompress_struct cinfo; /* back link to decompress master record */ |
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280 } |
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281 |
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282 static final class savable_state { |
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283 int EOBRUN; //Note that this is only used in the progressive case |
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284 int[MAX_COMPS_IN_SCAN] last_dc_val;// = new int[MAX_COMPS_IN_SCAN]; /* last DC coef for each component */ |
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285 } |
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286 |
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287 static final class d_derived_tbl { |
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288 /* Basic tables: (element [0] of each array is unused) */ |
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289 int[18] maxcode;// = new int[18]; /* largest code of length k (-1 if none) */ |
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290 /* (maxcode[17] is a sentinel to ensure jpeg_huff_decode terminates) */ |
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291 int[17] valoffset;// = new int[17]; /* huffval[] offset for codes of length k */ |
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292 /* valoffset[k] = huffval[] index of 1st symbol of code length k, less |
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293 * the smallest code of length k; so given a code of length k, the |
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294 * corresponding symbol is huffval[code + valoffset[k]] |
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295 */ |
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296 |
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297 /* Link to public Huffman table (needed only in jpeg_huff_decode) */ |
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298 JHUFF_TBL pub; |
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299 |
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300 /* Lookahead tables: indexed by the next HUFF_LOOKAHEAD bits of |
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301 * the input data stream. If the next Huffman code is no more |
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302 * than HUFF_LOOKAHEAD bits long, we can obtain its length and |
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303 * the corresponding symbol directly from these tables. |
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304 */ |
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305 int[1<<HUFF_LOOKAHEAD] look_nbits;// = new int[1<<HUFF_LOOKAHEAD]; /* # bits, or 0 if too long */ |
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306 byte[1<<HUFF_LOOKAHEAD] look_sym;// = new byte[1<<HUFF_LOOKAHEAD]; /* symbol, or unused */ |
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307 } |
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308 |
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309 static final class jpeg_d_coef_controller { |
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310 int consume_data; |
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311 int decompress_data; |
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312 |
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313 /* Pointer to array of coefficient virtual arrays, or null if none */ |
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314 short[][][] coef_arrays; |
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315 |
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316 /* These variables keep track of the current location of the input side. */ |
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317 /* cinfo.input_iMCU_row is also used for this. */ |
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318 int MCU_ctr; /* counts MCUs processed in current row */ |
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319 int MCU_vert_offset; /* counts MCU rows within iMCU row */ |
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320 int MCU_rows_per_iMCU_row; /* number of such rows needed */ |
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321 |
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322 /* The output side's location is represented by cinfo.output_iMCU_row. */ |
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323 |
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324 /* In single-pass modes, it's sufficient to buffer just one MCU. |
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325 * We allocate a workspace of D_MAX_BLOCKS_IN_MCU coefficient blocks, |
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326 * and let the entropy decoder write into that workspace each time. |
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327 * (On 80x86, the workspace is FAR even though it's not really very big; |
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328 * this is to keep the module interfaces unchanged when a large coefficient |
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329 * buffer is necessary.) |
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330 * In multi-pass modes, this array points to the current MCU's blocks |
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331 * within the virtual arrays; it is used only by the input side. |
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332 */ |
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333 short[][D_MAX_BLOCKS_IN_MCU] MCU_buffer;// = new short[D_MAX_BLOCKS_IN_MCU][]; |
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334 |
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335 /* In multi-pass modes, we need a virtual block array for each component. */ |
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336 short[][][][MAX_COMPONENTS] whole_image;// = new short[MAX_COMPONENTS][][][]; |
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337 |
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338 /* When doing block smoothing, we latch coefficient Al values here */ |
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339 int[] coef_bits_latch; |
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340 |
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341 short[] workspace; |
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342 |
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343 void start_input_pass (jpeg_decompress_struct cinfo) { |
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344 cinfo.input_iMCU_row = 0; |
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345 start_iMCU_row(cinfo); |
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346 } |
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347 |
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348 /* Reset within-iMCU-row counters for a new row (input side) */ |
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349 void start_iMCU_row (jpeg_decompress_struct cinfo) { |
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350 jpeg_d_coef_controller coef = cinfo.coef; |
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351 |
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352 /* In an interleaved scan, an MCU row is the same as an iMCU row. |
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353 * In a noninterleaved scan, an iMCU row has v_samp_factor MCU rows. |
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354 * But at the bottom of the image, process only what's left. |
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355 */ |
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356 if (cinfo.comps_in_scan > 1) { |
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357 coef.MCU_rows_per_iMCU_row = 1; |
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358 } else { |
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359 if (cinfo.input_iMCU_row < (cinfo.total_iMCU_rows-1)) |
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360 coef.MCU_rows_per_iMCU_row = cinfo.cur_comp_info[0].v_samp_factor; |
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361 else |
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362 coef.MCU_rows_per_iMCU_row = cinfo.cur_comp_info[0].last_row_height; |
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363 } |
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364 |
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365 coef.MCU_ctr = 0; |
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366 coef.MCU_vert_offset = 0; |
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367 } |
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368 |
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369 } |
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370 |
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371 static abstract class jpeg_entropy_decoder { |
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372 abstract void start_pass (jpeg_decompress_struct cinfo); |
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373 abstract bool decode_mcu (jpeg_decompress_struct cinfo, short[][] MCU_data); |
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374 |
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375 /* This is here to share code between baseline and progressive decoders; */ |
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376 /* other modules probably should not use it */ |
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377 bool insufficient_data; /* set true after emitting warning */ |
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378 |
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379 bitread_working_state br_state_local; |
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380 savable_state state_local; |
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381 public this(){ |
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382 br_state_local = new bitread_working_state(); |
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383 state_local = new savable_state(); |
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384 } |
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385 } |
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386 |
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387 static final class huff_entropy_decoder : jpeg_entropy_decoder { |
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388 bitread_perm_state bitstate;// = new bitread_perm_state(); /* Bit buffer at start of MCU */ |
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389 savable_state saved;// = new savable_state(); /* Other state at start of MCU */ |
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390 |
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391 /* These fields are NOT loaded into local working state. */ |
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392 int restarts_to_go; /* MCUs left in this restart interval */ |
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393 |
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394 /* Pointers to derived tables (these workspaces have image lifespan) */ |
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395 d_derived_tbl[NUM_HUFF_TBLS] dc_derived_tbls;// = new d_derived_tbl[NUM_HUFF_TBLS]; |
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396 d_derived_tbl[NUM_HUFF_TBLS] ac_derived_tbls;// = new d_derived_tbl[NUM_HUFF_TBLS]; |
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397 |
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398 /* Precalculated info set up by start_pass for use in decode_mcu: */ |
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399 |
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400 /* Pointers to derived tables to be used for each block within an MCU */ |
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401 d_derived_tbl[D_MAX_BLOCKS_IN_MCU] dc_cur_tbls;// = new d_derived_tbl[D_MAX_BLOCKS_IN_MCU]; |
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402 d_derived_tbl[D_MAX_BLOCKS_IN_MCU] ac_cur_tbls;// = new d_derived_tbl[D_MAX_BLOCKS_IN_MCU]; |
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403 /* Whether we care about the DC and AC coefficient values for each block */ |
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404 bool[D_MAX_BLOCKS_IN_MCU] dc_needed;// = new bool[D_MAX_BLOCKS_IN_MCU]; |
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405 bool[D_MAX_BLOCKS_IN_MCU] ac_needed;// = new bool[D_MAX_BLOCKS_IN_MCU]; |
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406 |
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407 public this(){ |
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408 bitstate = new bitread_perm_state(); /* Bit buffer at start of MCU */ |
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409 saved = new savable_state(); /* Other state at start of MCU */ |
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410 } |
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411 |
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412 override void start_pass (jpeg_decompress_struct cinfo) { |
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413 start_pass_huff_decoder(cinfo); |
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414 } |
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415 |
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416 override bool decode_mcu (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
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417 huff_entropy_decoder entropy = this; |
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418 int blkn; |
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419 // BITREAD_STATE_VARS; |
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420 int get_buffer; |
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421 int bits_left; |
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422 // bitread_working_state br_state = new bitread_working_state(); |
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423 // savable_state state = new savable_state(); |
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424 bitread_working_state br_state = br_state_local; |
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425 savable_state state = state_local; |
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426 |
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427 /* Process restart marker if needed; may have to suspend */ |
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428 if (cinfo.restart_interval !is 0) { |
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429 if (entropy.restarts_to_go is 0) |
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430 if (! process_restart(cinfo)) |
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431 return false; |
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432 } |
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433 |
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434 /* If we've run out of data, just leave the MCU set to zeroes. |
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435 * This way, we return uniform gray for the remainder of the segment. |
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436 */ |
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437 if (! entropy.insufficient_data) { |
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438 |
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439 /* Load up working state */ |
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440 // BITREAD_LOAD_STATE(cinfo,entropy.bitstate); |
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441 br_state.cinfo = cinfo; |
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442 br_state.buffer = cinfo.buffer; |
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443 br_state.bytes_in_buffer = cinfo.bytes_in_buffer; |
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444 br_state.bytes_offset = cinfo.bytes_offset; |
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445 get_buffer = entropy.bitstate.get_buffer; |
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446 bits_left = entropy.bitstate.bits_left; |
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447 |
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448 // ASSIGN_STATE(state, entropy.saved); |
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449 state.last_dc_val[0] = entropy.saved.last_dc_val[0]; |
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450 state.last_dc_val[1] = entropy.saved.last_dc_val[1]; |
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451 state.last_dc_val[2] = entropy.saved.last_dc_val[2]; |
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452 state.last_dc_val[3] = entropy.saved.last_dc_val[3]; |
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|
453 |
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|
454 /* Outer loop handles each block in the MCU */ |
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|
455 |
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456 for (blkn = 0; blkn < cinfo.blocks_in_MCU; blkn++) { |
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457 short[] block = MCU_data[blkn]; |
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458 d_derived_tbl dctbl = entropy.dc_cur_tbls[blkn]; |
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459 d_derived_tbl actbl = entropy.ac_cur_tbls[blkn]; |
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460 int s = 0, k, r; |
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|
461 |
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|
462 /* Decode a single block's worth of coefficients */ |
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diff
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|
463 |
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|
464 /* Section F.2.2.1: decode the DC coefficient difference */ |
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465 // HUFF_DECODE(s, br_state, dctbl, return FALSE, label1); |
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|
466 { |
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467 int nb = 0, look; |
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|
468 if (bits_left < HUFF_LOOKAHEAD) { |
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parents:
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|
469 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
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parents:
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|
470 return false; |
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parents:
diff
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|
471 } |
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472 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
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|
473 if (bits_left < HUFF_LOOKAHEAD) { |
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474 nb = 1; |
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|
475 // goto slowlabel; |
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|
476 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,dctbl,nb)) < 0) { |
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parents:
diff
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|
477 return false; |
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parents:
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|
478 } |
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|
479 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
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parents:
diff
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|
480 } |
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parents:
diff
changeset
|
481 } |
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|
482 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
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diff
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|
483 if (nb !is 1) { |
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parents:
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|
484 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
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parents:
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485 if ((nb = dctbl.look_nbits[look]) !is 0) { |
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parents:
diff
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|
486 // DROP_BITS(nb); |
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|
487 bits_left -= nb; |
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|
488 s = dctbl.look_sym[look] & 0xFF; |
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|
489 } else { |
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|
490 nb = HUFF_LOOKAHEAD+1; |
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|
491 // slowlabel: |
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492 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,dctbl,nb)) < 0) { |
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parents:
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|
493 return false; |
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parents:
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|
494 } |
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|
495 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
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parents:
diff
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|
496 } |
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parents:
diff
changeset
|
497 } |
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parents:
diff
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|
498 } |
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parents:
diff
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|
499 |
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parents:
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|
500 if (s !is 0) { |
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parents:
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|
501 // CHECK_BIT_BUFFER(br_state, s, return FALSE); |
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parents:
diff
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|
502 { |
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parents:
diff
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|
503 if (bits_left < (s)) { |
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parents:
diff
changeset
|
504 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,s)) { |
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parents:
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|
505 return false; |
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parents:
diff
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|
506 } |
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|
507 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
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parents:
diff
changeset
|
508 } |
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parents:
diff
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|
509 } |
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parents:
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|
510 // r = GET_BITS(s); |
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parents:
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|
511 r = (( (get_buffer >> (bits_left -= (s)))) & ((1<<(s))-1)); |
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parents:
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|
512 // s = HUFF_EXTEND(r, s); |
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parents:
diff
changeset
|
513 s = ((r) < extend_test[s] ? (r) + extend_offset[s] : (r)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
514 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
515 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
516 if (entropy.dc_needed[blkn]) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
517 /* Convert DC difference to actual value, update last_dc_val */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
518 int ci = cinfo.MCU_membership[blkn]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
519 s += state.last_dc_val[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
520 state.last_dc_val[ci] = s; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
521 /* Output the DC coefficient (assumes jpeg_natural_order[0] = 0) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
522 block[0] = cast(short) s; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
523 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
524 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
525 if (entropy.ac_needed[blkn]) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
526 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
527 /* Section F.2.2.2: decode the AC coefficients */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
528 /* Since zeroes are skipped, output area must be cleared beforehand */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
529 for (k = 1; k < DCTSIZE2; k++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
530 // HUFF_DECODE(s, br_state, actbl, return FALSE, label2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
531 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
532 int nb = 0, look; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
533 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
534 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
535 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
536 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
537 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
538 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
539 nb = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
540 // goto slowlabel; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
541 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,actbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
542 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
543 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
544 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
545 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
546 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
547 if (nb !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
548 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
549 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
550 if ((nb = actbl.look_nbits[look]) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
551 // DROP_BITS(nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
552 bits_left -= (nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
553 s = actbl.look_sym[look] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
554 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
555 nb = HUFF_LOOKAHEAD+1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
556 // slowlabel: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
557 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,actbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
558 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
559 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
560 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
561 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
562 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
563 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
564 r = s >> 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
565 s &= 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
566 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
567 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
568 k += r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
569 // CHECK_BIT_BUFFER(br_state, s, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
570 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
571 if (bits_left < (s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
572 if (!jpeg_fill_bit_buffer(br_state, get_buffer, bits_left, s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
573 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
574 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
575 get_buffer = br_state.get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
576 bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
577 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
578 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
579 // r = GET_BITS(s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
580 r = (((get_buffer >> (bits_left -= (s)))) & ((1 << (s)) - 1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
581 // s = HUFF_EXTEND(r, s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
582 s = ((r) < extend_test[s] ? (r) + extend_offset[s] : (r)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
583 /* |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
584 * Output coefficient in natural (dezigzagged) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
585 * order. Note: the extra entries in |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
586 * jpeg_natural_order[] will save us if k >= |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
587 * DCTSIZE2, which could happen if the data is |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
588 * corrupted. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
589 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
590 block[jpeg_natural_order[k]] = cast(short) s; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
591 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
592 if (r !is 15) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
593 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
594 k += 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
595 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
596 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
597 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
598 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
599 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
600 /* Section F.2.2.2: decode the AC coefficients */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
601 /* In this path we just discard the values */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
602 for (k = 1; k < DCTSIZE2; k++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
603 // HUFF_DECODE(s, br_state, actbl, return FALSE, label3); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
604 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
605 int nb = 0, look; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
606 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
607 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
608 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
609 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
610 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
611 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
612 nb = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
613 // goto slowlabel; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
614 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,actbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
615 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
616 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
617 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
618 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
619 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
620 if (nb !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
621 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
622 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
623 if ((nb = actbl.look_nbits[look]) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
624 // DROP_BITS(nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
625 bits_left -= (nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
626 s = actbl.look_sym[look] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
627 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
628 nb = HUFF_LOOKAHEAD+1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
629 // slowlabel: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
630 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,actbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
631 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
632 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
633 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
634 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
635 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
636 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
637 r = s >> 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
638 s &= 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
639 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
640 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
641 k += r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
642 // CHECK_BIT_BUFFER(br_state, s, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
643 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
644 if (bits_left < (s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
645 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
646 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
647 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
648 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
649 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
650 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
651 // DROP_BITS(s); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
652 bits_left -= s; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
653 } else { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
654 if (r !is 15) |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
655 break; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
656 k += 15; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
657 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
658 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
659 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
660 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
661 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
662 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
663 /* Completed MCU, so update state */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
664 // BITREAD_SAVE_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
665 cinfo.buffer = br_state.buffer; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
666 cinfo.bytes_in_buffer = br_state.bytes_in_buffer; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
667 cinfo.bytes_offset = br_state.bytes_offset; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
668 entropy.bitstate.get_buffer = get_buffer; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
669 entropy.bitstate.bits_left = bits_left; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
670 // ASSIGN_STATE(entropy.saved, state); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
671 entropy.saved.last_dc_val[0] = state.last_dc_val[0]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
672 entropy.saved.last_dc_val[1] = state.last_dc_val[1]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
673 entropy.saved.last_dc_val[2] = state.last_dc_val[2]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
674 entropy.saved.last_dc_val[3] = state.last_dc_val[3]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
675 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
676 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
677 /* Account for restart interval (no-op if not using restarts) */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
678 entropy.restarts_to_go--; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
679 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
680 return true; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
681 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
682 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
683 void start_pass_huff_decoder (jpeg_decompress_struct cinfo) { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
684 huff_entropy_decoder entropy = this; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
685 int ci, blkn, dctbl, actbl; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
686 jpeg_component_info compptr; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
687 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
688 /* Check that the scan parameters Ss, Se, Ah/Al are OK for sequential JPEG. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
689 * This ought to be an error condition, but we make it a warning because |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
690 * there are some baseline files out there with all zeroes in these bytes. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
691 */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
692 if (cinfo.Ss !is 0 || cinfo.Se !is DCTSIZE2-1 || cinfo.Ah !is 0 || cinfo.Al !is 0) { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
693 // WARNMS(cinfo, JWRN_NOT_SEQUENTIAL); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
694 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
695 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
696 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
697 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
698 dctbl = compptr.dc_tbl_no; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
699 actbl = compptr.ac_tbl_no; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
700 /* Compute derived values for Huffman tables */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
701 /* We may do this more than once for a table, but it's not expensive */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
702 jpeg_make_d_derived_tbl(cinfo, true, dctbl, entropy.dc_derived_tbls[dctbl] = new d_derived_tbl()); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
703 jpeg_make_d_derived_tbl(cinfo, false, actbl, entropy.ac_derived_tbls[actbl] = new d_derived_tbl()); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
704 /* Initialize DC predictions to 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
705 entropy.saved.last_dc_val[ci] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
706 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
707 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
708 /* Precalculate decoding info for each block in an MCU of this scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
709 for (blkn = 0; blkn < cinfo.blocks_in_MCU; blkn++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
710 ci = cinfo.MCU_membership[blkn]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
711 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
712 /* Precalculate which table to use for each block */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
713 entropy.dc_cur_tbls[blkn] = entropy.dc_derived_tbls[compptr.dc_tbl_no]; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
714 entropy.ac_cur_tbls[blkn] = entropy.ac_derived_tbls[compptr.ac_tbl_no]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
715 /* Decide whether we really care about the coefficient values */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
716 if (compptr.component_needed) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
717 entropy.dc_needed[blkn] = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
718 /* we don't need the ACs if producing a 1/8th-size image */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
719 entropy.ac_needed[blkn] = (compptr.DCT_scaled_size > 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
720 } else { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
721 entropy.dc_needed[blkn] = entropy.ac_needed[blkn] = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
722 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
723 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
724 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
725 /* Initialize bitread state variables */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
726 entropy.bitstate.bits_left = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
727 entropy.bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
728 entropy.insufficient_data = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
729 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
730 /* Initialize restart counter */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
731 entropy.restarts_to_go = cinfo.restart_interval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
732 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
733 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
734 bool process_restart (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
735 huff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
736 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
737 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
738 /* Throw away any unused bits remaining in bit buffer; */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
739 /* include any full bytes in next_marker's count of discarded bytes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
740 cinfo.marker.discarded_bytes += entropy.bitstate.bits_left / 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
741 entropy.bitstate.bits_left = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
742 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
743 /* Advance past the RSTn marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
744 if (! read_restart_marker (cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
745 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
746 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
747 /* Re-initialize DC predictions to 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
748 for (ci = 0; ci < cinfo.comps_in_scan; ci++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
749 entropy.saved.last_dc_val[ci] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
750 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
751 /* Reset restart counter */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
752 entropy.restarts_to_go = cinfo.restart_interval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
753 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
754 /* Reset out-of-data flag, unless read_restart_marker left us smack up |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
755 * against a marker. In that case we will end up treating the next data |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
756 * segment as empty, and we can avoid producing bogus output pixels by |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
757 * leaving the flag set. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
758 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
759 if (cinfo.unread_marker is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
760 entropy.insufficient_data = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
761 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
762 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
763 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
764 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
765 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
766 static final class phuff_entropy_decoder : jpeg_entropy_decoder { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
767 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
768 /* These fields are loaded into local variables at start of each MCU. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
769 * In case of suspension, we exit WITHOUT updating them. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
770 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
771 bitread_perm_state bitstate;// = new bitread_perm_state(); /* Bit buffer at start of MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
772 savable_state saved;// = new savable_state(); /* Other state at start of MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
773 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
774 /* These fields are NOT loaded into local working state. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
775 int restarts_to_go; /* MCUs left in this restart interval */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
776 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
777 /* Pointers to derived tables (these workspaces have image lifespan) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
778 d_derived_tbl[NUM_HUFF_TBLS] derived_tbls;// = new d_derived_tbl[NUM_HUFF_TBLS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
779 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
780 d_derived_tbl ac_derived_tbl; /* active table during an AC scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
781 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
782 int[DCTSIZE2] newnz_pos;// = new int[DCTSIZE2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
783 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
784 public this(){ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
785 bitstate = new bitread_perm_state(); /* Bit buffer at start of MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
786 saved = new savable_state(); /* Other state at start of MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
787 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
788 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
789 override void start_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
790 start_pass_phuff_decoder(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
791 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
792 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
793 override bool decode_mcu (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
794 bool is_DC_band = (cinfo.Ss is 0); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
795 if (cinfo.Ah is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
796 if (is_DC_band) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
797 return decode_mcu_DC_first(cinfo, MCU_data); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
798 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
799 return decode_mcu_AC_first(cinfo, MCU_data); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
800 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
801 if (is_DC_band) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
802 return decode_mcu_DC_refine(cinfo, MCU_data); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
803 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
804 return decode_mcu_AC_refine(cinfo, MCU_data); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
805 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
806 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
807 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
808 bool decode_mcu_DC_refine (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
809 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
810 int p1 = 1 << cinfo.Al; /* 1 in the bit position being coded */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
811 int blkn; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
812 short[] block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
813 // BITREAD_STATE_VARS; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
814 int get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
815 int bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
816 // bitread_working_state br_state = new bitread_working_state(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
817 bitread_working_state br_state = br_state_local; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
818 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
819 /* Process restart marker if needed; may have to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
820 if (cinfo.restart_interval !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
821 if (entropy.restarts_to_go is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
822 if (! process_restart(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
823 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
824 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
825 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
826 /* Not worth the cycles to check insufficient_data here, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
827 * since we will not change the data anyway if we read zeroes. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
828 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
829 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
830 /* Load up working state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
831 // BITREAD_LOAD_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
832 br_state.cinfo = cinfo; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
833 br_state.buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
834 br_state.bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
835 br_state.bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
836 get_buffer = entropy.bitstate.get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
837 bits_left = entropy.bitstate.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
838 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
839 /* Outer loop handles each block in the MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
840 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
841 for (blkn = 0; blkn < cinfo.blocks_in_MCU; blkn++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
842 block = MCU_data[blkn]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
843 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
844 /* Encoded data is simply the next bit of the two's-complement DC value */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
845 // CHECK_BIT_BUFFER(br_state, 1, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
846 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
847 if (bits_left < (1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
848 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
849 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
850 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
851 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
852 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
853 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
854 // if (GET_BITS(1)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
855 if ((( (get_buffer >> (bits_left -= (1)))) & ((1<<(1))-1)) !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
856 block[0] |= p1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
857 /* Note: since we use |=, repeating the assignment later is safe */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
858 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
859 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
860 /* Completed MCU, so update state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
861 // BITREAD_SAVE_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
862 cinfo.buffer = br_state.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
863 cinfo.bytes_in_buffer = br_state.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
864 cinfo.bytes_offset = br_state.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
865 entropy.bitstate.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
866 entropy.bitstate.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
867 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
868 /* Account for restart interval (no-op if not using restarts) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
869 entropy.restarts_to_go--; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
870 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
871 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
872 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
873 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
874 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
875 bool decode_mcu_AC_refine (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
876 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
877 int Se = cinfo.Se; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
878 int p1 = 1 << cinfo.Al; /* 1 in the bit position being coded */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
879 int m1 = (-1) << cinfo.Al; /* -1 in the bit position being coded */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
880 int s = 0, k, r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
881 int EOBRUN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
882 short[] block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
883 short[] thiscoef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
884 // BITREAD_STATE_VARS; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
885 int get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
886 int bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
887 // bitread_working_state br_state = new bitread_working_state(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
888 bitread_working_state br_state = br_state_local; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
889 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
890 d_derived_tbl tbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
891 int num_newnz; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
892 int[] newnz_pos = entropy.newnz_pos; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
893 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
894 /* Process restart marker if needed; may have to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
895 if (cinfo.restart_interval !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
896 if (entropy.restarts_to_go is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
897 if (! process_restart(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
898 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
899 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
900 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
901 /* If we've run out of data, don't modify the MCU. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
902 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
903 if (! entropy.insufficient_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
904 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
905 /* Load up working state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
906 // BITREAD_LOAD_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
907 br_state.cinfo = cinfo; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
908 br_state.buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
909 br_state.bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
910 br_state.bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
911 get_buffer = entropy.bitstate.get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
912 bits_left = entropy.bitstate.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
913 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
914 EOBRUN = entropy.saved.EOBRUN; /* only part of saved state we need */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
915 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
916 /* There is always only one block per MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
917 block = MCU_data[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
918 tbl = entropy.ac_derived_tbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
919 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
920 /* If we are forced to suspend, we must undo the assignments to any newly |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
921 * nonzero coefficients in the block, because otherwise we'd get confused |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
922 * next time about which coefficients were already nonzero. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
923 * But we need not undo addition of bits to already-nonzero coefficients; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
924 * instead, we can test the current bit to see if we already did it. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
925 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
926 num_newnz = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
927 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
928 /* initialize coefficient loop counter to start of band */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
929 k = cinfo.Ss; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
930 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
931 if (EOBRUN is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
932 for (; k <= Se; k++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
933 // HUFF_DECODE(s, br_state, tbl, goto undoit, label3); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
934 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
935 int nb = 0, look; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
936 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
937 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
938 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
939 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
940 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
941 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
942 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
943 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
944 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
945 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
946 nb = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
947 // goto slowlabel; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
948 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
949 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
950 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
951 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
952 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
953 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
954 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
955 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
956 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
957 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
958 if (nb !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
959 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
960 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
961 if ((nb = tbl.look_nbits[look]) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
962 // DROP_BITS(nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
963 bits_left -= nb; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
964 s = tbl.look_sym[look] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
965 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
966 nb = HUFF_LOOKAHEAD+1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
967 // slowlabel: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
968 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
969 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
970 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
971 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
972 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
973 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
974 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
975 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
976 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
977 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
978 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
979 r = s >> 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
980 s &= 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
981 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
982 if (s !is 1) { /* size of new coef should always be 1 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
983 // WARNMS(cinfo, JWRN_HUFF_BAD_CODE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
984 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
985 // CHECK_BIT_BUFFER(br_state, 1, goto undoit); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
986 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
987 if (bits_left < (1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
988 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
989 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
990 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
991 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
992 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
993 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
994 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
995 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
996 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
997 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
998 // if (GET_BITS(1)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
999 if ((( (get_buffer >> (bits_left -= (1)))) & ((1<<(1))-1)) !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1000 s = p1; /* newly nonzero coef is positive */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1001 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1002 s = m1; /* newly nonzero coef is negative */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1003 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1004 if (r !is 15) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1005 EOBRUN = 1 << r; /* EOBr, run length is 2^r + appended bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1006 if (r !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1007 // CHECK_BIT_BUFFER(br_state, r, goto undoit); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1008 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1009 if (bits_left < (r)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1010 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,r)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1011 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1012 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1013 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1014 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1015 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1016 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1017 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1018 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1019 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1020 // r = GET_BITS(r); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1021 r = (( (get_buffer >> (bits_left -= (r)))) & ((1<<(r))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1022 EOBRUN += r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1023 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1024 break; /* rest of block is handled by EOB logic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1025 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1026 /* note s = 0 for processing ZRL */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1027 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1028 /* Advance over already-nonzero coefs and r still-zero coefs, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1029 * appending correction bits to the nonzeroes. A correction bit is 1 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1030 * if the absolute value of the coefficient must be increased. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1031 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1032 do { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1033 thiscoef = block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1034 int thiscoef_offset = jpeg_natural_order[k]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1035 if (thiscoef[thiscoef_offset] !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1036 // CHECK_BIT_BUFFER(br_state, 1, goto undoit); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1037 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1038 if (bits_left < (1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1039 if (!jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1040 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1041 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1042 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1043 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1044 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1045 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1046 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1047 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1048 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1049 // if (GET_BITS(1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1050 if ((( (get_buffer >> (bits_left -= (1)))) & ((1<<(1))-1)) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1051 if ((thiscoef[thiscoef_offset] & p1) is 0) { /* do nothing if already set it */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1052 if (thiscoef[thiscoef_offset] >= 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1053 thiscoef[thiscoef_offset] += p1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1054 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1055 thiscoef[thiscoef_offset] += m1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1056 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1057 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1058 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1059 if (--r < 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1060 break; /* reached target zero coefficient */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1061 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1062 k++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1063 } while (k <= Se); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1064 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1065 int pos = jpeg_natural_order[k]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1066 /* Output newly nonzero coefficient */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1067 block[pos] = cast(short) s; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1068 /* Remember its position in case we have to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1069 newnz_pos[num_newnz++] = pos; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1070 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1071 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1072 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1073 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1074 if (EOBRUN > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1075 /* Scan any remaining coefficient positions after the end-of-band |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1076 * (the last newly nonzero coefficient, if any). Append a correction |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1077 * bit to each already-nonzero coefficient. A correction bit is 1 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1078 * if the absolute value of the coefficient must be increased. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1079 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1080 for (; k <= Se; k++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1081 thiscoef = block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1082 int thiscoef_offset = jpeg_natural_order[k]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1083 if (thiscoef[thiscoef_offset] !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1084 // CHECK_BIT_BUFFER(br_state, 1, goto undoit); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1085 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1086 if (bits_left < (1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1087 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1088 // failaction; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1089 while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1090 block[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1091 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1092 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1093 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1094 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1095 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1096 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1097 // if (GET_BITS(1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1098 if ((( (get_buffer >> (bits_left -= (1)))) & ((1<<(1))-1)) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1099 if ((thiscoef[thiscoef_offset] & p1) is 0) { /* do nothing if already changed it */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1100 if (thiscoef[thiscoef_offset] >= 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1101 thiscoef[thiscoef_offset] += p1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1102 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1103 thiscoef[thiscoef_offset] += m1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1104 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1105 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1106 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1107 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1108 /* Count one block completed in EOB run */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1109 EOBRUN--; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1110 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1111 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1112 /* Completed MCU, so update state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1113 // BITREAD_SAVE_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1114 cinfo.buffer = br_state.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1115 cinfo.bytes_in_buffer = br_state.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1116 cinfo.bytes_offset = br_state.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1117 entropy.bitstate.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1118 entropy.bitstate.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1119 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1120 entropy.saved.EOBRUN = EOBRUN; /* only part of saved state we need */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1121 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1122 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1123 /* Account for restart interval (no-op if not using restarts) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1124 entropy.restarts_to_go--; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1125 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1126 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1127 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1128 // undoit: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1129 // /* Re-zero any output coefficients that we made newly nonzero */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1130 // while (num_newnz > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1131 // (*block)[newnz_pos[--num_newnz]] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1132 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1133 // return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1134 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1135 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1136 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1137 bool decode_mcu_AC_first (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1138 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1139 int Se = cinfo.Se; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1140 int Al = cinfo.Al; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1141 int s = 0, k, r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1142 int EOBRUN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1143 short[] block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1144 // BITREAD_STATE_VARS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1145 int get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1146 int bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1147 // bitread_working_state br_state = new bitread_working_state(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1148 bitread_working_state br_state = br_state_local; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1149 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1150 d_derived_tbl tbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1151 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1152 /* Process restart marker if needed; may have to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1153 if (cinfo.restart_interval !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1154 if (entropy.restarts_to_go is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1155 if (! process_restart(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1156 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1157 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1158 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1159 /* If we've run out of data, just leave the MCU set to zeroes. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1160 * This way, we return uniform gray for the remainder of the segment. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1161 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1162 if (! entropy.insufficient_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1163 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1164 /* Load up working state. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1165 * We can avoid loading/saving bitread state if in an EOB run. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1166 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1167 EOBRUN = entropy.saved.EOBRUN; /* only part of saved state we need */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1168 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1169 /* There is always only one block per MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1170 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1171 if (EOBRUN > 0) /* if it's a band of zeroes... */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1172 EOBRUN--; /* ...process it now (we do nothing) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1173 else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1174 // BITREAD_LOAD_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1175 br_state.cinfo = cinfo; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1176 br_state.buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1177 br_state.bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1178 br_state.bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1179 get_buffer = entropy.bitstate.get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1180 bits_left = entropy.bitstate.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1181 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1182 block = MCU_data[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1183 tbl = entropy.ac_derived_tbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1184 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1185 for (k = cinfo.Ss; k <= Se; k++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1186 // HUFF_DECODE(s, br_state, tbl, return FALSE, label2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1187 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1188 int nb = 0, look; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1189 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1190 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1191 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1192 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1193 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1194 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1195 nb = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1196 // goto slowlabel; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1197 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1198 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1199 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1200 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1201 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1202 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1203 if (nb !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1204 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1205 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1206 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1207 if ((nb = tbl.look_nbits[look]) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1208 // DROP_BITS(nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1209 bits_left -= nb; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1210 s = tbl.look_sym[look] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1211 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1212 nb = HUFF_LOOKAHEAD+1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1213 // slowlabel: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1214 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1215 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1216 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1217 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1218 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1219 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1220 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1221 r = s >> 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1222 s &= 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1223 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1224 k += r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1225 // CHECK_BIT_BUFFER(br_state, s, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1226 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1227 if (bits_left < (s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1228 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1229 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1230 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1231 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1232 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1233 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1234 // r = GET_BITS(s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1235 r = (( (get_buffer >> (bits_left -= (s)))) & ((1<<(s))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1236 // s = HUFF_EXTEND(r, s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1237 s = ((r) < extend_test[s] ? (r) + extend_offset[s] : (r)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1238 /* Scale and output coefficient in natural (dezigzagged) order */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1239 block[jpeg_natural_order[k]] = cast(short) (s << Al); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1240 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1241 if (r is 15) { /* ZRL */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1242 k += 15; /* skip 15 zeroes in band */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1243 } else { /* EOBr, run length is 2^r + appended bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1244 EOBRUN = 1 << r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1245 if (r !is 0) { /* EOBr, r > 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1246 // CHECK_BIT_BUFFER(br_state, r, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1247 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1248 if (bits_left < (r)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1249 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,r)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1250 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1251 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1252 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1253 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1254 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1255 // r = GET_BITS(r); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1256 r = (( (get_buffer >> (bits_left -= (r)))) & ((1<<(r))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1257 EOBRUN += r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1258 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1259 EOBRUN--; /* this band is processed at this moment */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1260 break; /* force end-of-band */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1261 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1262 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1263 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1264 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1265 // BITREAD_SAVE_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1266 cinfo.buffer = br_state.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1267 cinfo.bytes_in_buffer = br_state.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1268 cinfo.bytes_offset = br_state.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1269 entropy.bitstate.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1270 entropy.bitstate.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1271 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1272 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1273 /* Completed MCU, so update state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1274 entropy.saved.EOBRUN = EOBRUN; /* only part of saved state we need */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1275 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1276 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1277 /* Account for restart interval (no-op if not using restarts) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1278 entropy.restarts_to_go--; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1279 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1280 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1281 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1282 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1283 bool decode_mcu_DC_first (jpeg_decompress_struct cinfo, short[][] MCU_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1284 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1285 int Al = cinfo.Al; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1286 int s = 0, r; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1287 int blkn, ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1288 short[] block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1289 // BITREAD_STATE_VARS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1290 int get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1291 int bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1292 // bitread_working_state br_state = new bitread_working_state(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1293 bitread_working_state br_state = br_state_local; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1294 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1295 // savable_state state = new savable_state(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1296 savable_state state = state_local; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1297 d_derived_tbl tbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1298 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1299 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1300 /* Process restart marker if needed; may have to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1301 if (cinfo.restart_interval !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1302 if (entropy.restarts_to_go is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1303 if (! process_restart(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1304 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1305 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1306 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1307 /* If we've run out of data, just leave the MCU set to zeroes. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1308 * This way, we return uniform gray for the remainder of the segment. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1309 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1310 if (! entropy.insufficient_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1311 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1312 /* Load up working state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1313 // BITREAD_LOAD_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1314 br_state.cinfo = cinfo; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1315 br_state.buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1316 br_state.bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1317 br_state.bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1318 get_buffer = entropy.bitstate.get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1319 bits_left = entropy.bitstate.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1320 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1321 // ASSIGN_STATE(state, entropy.saved); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1322 state.EOBRUN = entropy.saved.EOBRUN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1323 state.last_dc_val[0] = entropy.saved.last_dc_val[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1324 state.last_dc_val[1] = entropy.saved.last_dc_val[1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1325 state.last_dc_val[2] = entropy.saved.last_dc_val[2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1326 state.last_dc_val[3] = entropy.saved.last_dc_val[3]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1327 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1328 /* Outer loop handles each block in the MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1329 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1330 for (blkn = 0; blkn < cinfo.blocks_in_MCU; blkn++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1331 block = MCU_data[blkn]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1332 ci = cinfo.MCU_membership[blkn]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1333 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1334 tbl = entropy.derived_tbls[compptr.dc_tbl_no]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1335 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1336 /* Decode a single block's worth of coefficients */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1337 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1338 /* Section F.2.2.1: decode the DC coefficient difference */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1339 // HUFF_DECODE(s, br_state, tbl, return FALSE, label1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1340 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1341 int nb = 0, look; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1342 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1343 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left, 0)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1344 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1345 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1346 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1347 if (bits_left < HUFF_LOOKAHEAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1348 nb = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1349 // goto slowlabel; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1350 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1351 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1352 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1353 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1354 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1355 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1356 if (nb !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1357 // look = PEEK_BITS(HUFF_LOOKAHEAD); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1358 look = (( (get_buffer >> (bits_left - (HUFF_LOOKAHEAD)))) & ((1<<(HUFF_LOOKAHEAD))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1359 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1360 if ((nb = tbl.look_nbits[look]) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1361 // DROP_BITS(nb); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1362 bits_left -= nb; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1363 s = tbl.look_sym[look] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1364 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1365 nb = HUFF_LOOKAHEAD+1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1366 // slowlabel: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1367 if ((s=jpeg_huff_decode(br_state,get_buffer,bits_left,tbl,nb)) < 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1368 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1369 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1370 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1371 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1372 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1373 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1374 if (s !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1375 // CHECK_BIT_BUFFER(br_state, s, return FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1376 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1377 if (bits_left < (s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1378 if (! jpeg_fill_bit_buffer(br_state,get_buffer,bits_left,s)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1379 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1380 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1381 get_buffer = br_state.get_buffer; bits_left = br_state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1382 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1383 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1384 // r = GET_BITS(s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1385 r = (( (get_buffer >> (bits_left -= (s)))) & ((1<<(s))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1386 // s = HUFF_EXTEND(r, s); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1387 s = ((r) < extend_test[s] ? (r) + extend_offset[s] : (r)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1388 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1389 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1390 /* Convert DC difference to actual value, update last_dc_val */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1391 s += state.last_dc_val[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1392 state.last_dc_val[ci] = s; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1393 /* Scale and output the coefficient (assumes jpeg_natural_order[0]=0) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1394 block[0] = cast(short) (s << Al); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1395 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1396 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1397 /* Completed MCU, so update state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1398 // BITREAD_SAVE_STATE(cinfo,entropy.bitstate); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1399 cinfo.buffer = br_state.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1400 cinfo.bytes_in_buffer = br_state.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1401 cinfo.bytes_offset = br_state.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1402 entropy.bitstate.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1403 entropy.bitstate.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1404 // ASSIGN_STATE(entropy.saved, state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1405 entropy.saved.EOBRUN = state.EOBRUN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1406 entropy.saved.last_dc_val[0] = state.last_dc_val[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1407 entropy.saved.last_dc_val[1] = state.last_dc_val[1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1408 entropy.saved.last_dc_val[2] = state.last_dc_val[2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1409 entropy.saved.last_dc_val[3] = state.last_dc_val[3]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1410 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1411 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1412 /* Account for restart interval (no-op if not using restarts) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1413 entropy.restarts_to_go--; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1414 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1415 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1416 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1417 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1418 bool process_restart (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1419 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1420 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1421 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1422 /* Throw away any unused bits remaining in bit buffer; */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1423 /* include any full bytes in next_marker's count of discarded bytes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1424 cinfo.marker.discarded_bytes += entropy.bitstate.bits_left / 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1425 entropy.bitstate.bits_left = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1426 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1427 /* Advance past the RSTn marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1428 if (! read_restart_marker (cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1429 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1430 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1431 /* Re-initialize DC predictions to 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1432 for (ci = 0; ci < cinfo.comps_in_scan; ci++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1433 entropy.saved.last_dc_val[ci] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1434 /* Re-init EOB run count, too */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1435 entropy.saved.EOBRUN = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1436 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1437 /* Reset restart counter */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1438 entropy.restarts_to_go = cinfo.restart_interval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1439 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1440 /* Reset out-of-data flag, unless read_restart_marker left us smack up |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1441 * against a marker. In that case we will end up treating the next data |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1442 * segment as empty, and we can avoid producing bogus output pixels by |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1443 * leaving the flag set. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1444 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1445 if (cinfo.unread_marker is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1446 entropy.insufficient_data = false; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1447 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1448 return true; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1449 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1450 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1451 void start_pass_phuff_decoder (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1452 phuff_entropy_decoder entropy = this; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1453 bool is_DC_band, bad; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1454 int ci, coefi, tbl; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1455 int[] coef_bit_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1456 jpeg_component_info compptr; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1457 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1458 is_DC_band = (cinfo.Ss is 0); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1459 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1460 /* Validate scan parameters */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1461 bad = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1462 if (is_DC_band) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1463 if (cinfo.Se !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1464 bad = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1465 } else { |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1466 /* need not check Ss/Se < 0 since they came from unsigned bytes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1467 if (cinfo.Ss > cinfo.Se || cinfo.Se >= DCTSIZE2) |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1468 bad = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1469 /* AC scans may have only one component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1470 if (cinfo.comps_in_scan !is 1) |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1471 bad = true; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1472 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1473 if (cinfo.Ah !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1474 /* Successive approximation refinement scan: must have Al = Ah-1. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1475 if (cinfo.Al !is cinfo.Ah-1) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1476 bad = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1477 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1478 if (cinfo.Al > 13) /* need not check for < 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1479 bad = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1480 /* Arguably the maximum Al value should be less than 13 for 8-bit precision, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1481 * but the spec doesn't say so, and we try to be liberal about what we |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1482 * accept. Note: large Al values could result in out-of-range DC |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1483 * coefficients during early scans, leading to bizarre displays due to |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1484 * overflows in the IDCT math. But we won't crash. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1485 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1486 if (bad) |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1487 error(); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1488 // ERREXIT4(cinfo, JERR_BAD_PROGRESSION, cinfo.Ss, cinfo.Se, cinfo.Ah, cinfo.Al); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1489 /* Update progression status, and verify that scan order is legal. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1490 * Note that inter-scan inconsistencies are treated as warnings |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1491 * not fatal errors ... not clear if this is right way to behave. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1492 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1493 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1494 int cindex = cinfo.cur_comp_info[ci].component_index; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1495 coef_bit_ptr = cinfo.coef_bits[cindex]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1496 if (!is_DC_band && coef_bit_ptr[0] < 0) {/* AC without prior DC scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1497 // WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, 0); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1498 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1499 for (coefi = cinfo.Ss; coefi <= cinfo.Se; coefi++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1500 int expected = (coef_bit_ptr[coefi] < 0) ? 0 : coef_bit_ptr[coefi]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1501 if (cinfo.Ah !is expected) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1502 // WARNMS2(cinfo, JWRN_BOGUS_PROGRESSION, cindex, coefi); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1503 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1504 coef_bit_ptr[coefi] = cinfo.Al; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1505 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1506 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1507 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1508 /* Select MCU decoding routine */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1509 // if (cinfo.Ah is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1510 // if (is_DC_band) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1511 // entropy.pub.decode_mcu = decode_mcu_DC_first; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1512 // else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1513 // entropy.pub.decode_mcu = decode_mcu_AC_first; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1514 // } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1515 // if (is_DC_band) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1516 // entropy.pub.decode_mcu = decode_mcu_DC_refine; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1517 // else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1518 // entropy.pub.decode_mcu = decode_mcu_AC_refine; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1519 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1520 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1521 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1522 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1523 /* Make sure requested tables are present, and compute derived tables. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1524 * We may build same derived table more than once, but it's not expensive. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1525 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1526 if (is_DC_band) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1527 if (cinfo.Ah is 0) { /* DC refinement needs no table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1528 tbl = compptr.dc_tbl_no; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1529 jpeg_make_d_derived_tbl(cinfo, true, tbl, entropy.derived_tbls[tbl] = new d_derived_tbl()); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1530 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1531 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1532 tbl = compptr.ac_tbl_no; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1533 jpeg_make_d_derived_tbl(cinfo, false, tbl, entropy.derived_tbls[tbl] = new d_derived_tbl()); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1534 /* remember the single active table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1535 entropy.ac_derived_tbl = entropy.derived_tbls[tbl]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1536 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1537 /* Initialize DC predictions to 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1538 entropy.saved.last_dc_val[ci] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1539 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1540 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1541 /* Initialize bitread state variables */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1542 entropy.bitstate.bits_left = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1543 entropy.bitstate.get_buffer = 0; /* unnecessary, but keeps Purify quiet */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1544 entropy.insufficient_data = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1545 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1546 /* Initialize private state variables */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1547 entropy.saved.EOBRUN = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1548 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1549 /* Initialize restart counter */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1550 entropy.restarts_to_go = cinfo.restart_interval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1551 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1552 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1553 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1554 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1555 static final class jpeg_component_info { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1556 /* These values are fixed over the whole image. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1557 /* For compression, they must be supplied by parameter setup; */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1558 /* for decompression, they are read from the SOF marker. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1559 int component_id; /* identifier for this component (0..255) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1560 int component_index; /* its index in SOF or cinfo.comp_info[] */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1561 int h_samp_factor; /* horizontal sampling factor (1..4) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1562 int v_samp_factor; /* vertical sampling factor (1..4) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1563 int quant_tbl_no; /* quantization table selector (0..3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1564 /* These values may vary between scans. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1565 /* For compression, they must be supplied by parameter setup; */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1566 /* for decompression, they are read from the SOS marker. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1567 /* The decompressor output side may not use these variables. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1568 int dc_tbl_no; /* DC entropy table selector (0..3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1569 int ac_tbl_no; /* AC entropy table selector (0..3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1570 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1571 /* Remaining fields should be treated as private by applications. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1572 |
6dd524f61e62
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parents:
diff
changeset
|
1573 /* These values are computed during compression or decompression startup: */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1574 /* Component's size in DCT blocks. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1575 * Any dummy blocks added to complete an MCU are not counted; therefore |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1576 * these values do not depend on whether a scan is interleaved or not. |
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parents:
diff
changeset
|
1577 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1578 int width_in_blocks; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1579 int height_in_blocks; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1580 /* Size of a DCT block in samples. Always DCTSIZE for compression. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
1581 * For decompression this is the size of the output from one DCT block, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
1582 * reflecting any scaling we choose to apply during the IDCT step. |
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parents:
diff
changeset
|
1583 * Values of 1,2,4,8 are likely to be supported. Note that different |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1584 * components may receive different IDCT scalings. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1585 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1586 int DCT_scaled_size; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
1587 /* The downsampled dimensions are the component's actual, unpadded number |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1588 * of samples at the main buffer (preprocessing/compression interface), thus |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1589 * downsampled_width = ceil(image_width * Hi/Hmax) |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1590 * and similarly for height. For decompression, IDCT scaling is included, so |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1591 * downsampled_width = ceil(image_width * Hi/Hmax * DCT_scaled_size/DCTSIZE) |
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parents:
diff
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|
1592 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1593 int downsampled_width; /* actual width in samples */ |
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parents:
diff
changeset
|
1594 int downsampled_height; /* actual height in samples */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1595 /* This flag is used only for decompression. In cases where some of the |
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parents:
diff
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|
1596 * components will be ignored (eg grayscale output from YCbCr image), |
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parents:
diff
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|
1597 * we can skip most computations for the unused components. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
1598 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
1599 bool component_needed; /* do we need the value of this component? */ |
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parents:
diff
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|
1600 |
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parents:
diff
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|
1601 /* These values are computed before starting a scan of the component. */ |
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parents:
diff
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|
1602 /* The decompressor output side may not use these variables. */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1603 int MCU_width; /* number of blocks per MCU, horizontally */ |
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parents:
diff
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|
1604 int MCU_height; /* number of blocks per MCU, vertically */ |
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parents:
diff
changeset
|
1605 int MCU_blocks; /* MCU_width * MCU_height */ |
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parents:
diff
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|
1606 int MCU_sample_width; /* MCU width in samples, MCU_width*DCT_scaled_size */ |
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parents:
diff
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|
1607 int last_col_width; /* # of non-dummy blocks across in last MCU */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1608 int last_row_height; /* # of non-dummy blocks down in last MCU */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1609 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1610 /* Saved quantization table for component; null if none yet saved. |
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parents:
diff
changeset
|
1611 * See jdinput.c comments about the need for this information. |
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parents:
diff
changeset
|
1612 * This field is currently used only for decompression. |
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parents:
diff
changeset
|
1613 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1614 JQUANT_TBL quant_table; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1615 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1616 /* Private per-component storage for DCT or IDCT subsystem. */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1617 int[] dct_table; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1618 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1619 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1620 static final class jpeg_color_quantizer { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1621 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo, bool is_pre_scan)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1622 // JMETHOD(void, color_quantize, (j_decompress_ptr cinfo, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1623 // JSAMPARRAY input_buf, JSAMPARRAY output_buf, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1624 // int num_rows)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1625 // JMETHOD(void, finish_pass, (j_decompress_ptr cinfo)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1626 // JMETHOD(void, new_color_map, (j_decompress_ptr cinfo)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1627 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1628 /* Initially allocated colormap is saved here */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1629 int[][] sv_colormap; /* The color map as a 2-D pixel array */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1630 int sv_actual; /* number of entries in use */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1631 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1632 int[][] colorindex; /* Precomputed mapping for speed */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1633 /* colorindex[i][j] = index of color closest to pixel value j in component i, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1634 * premultiplied as described above. Since colormap indexes must fit into |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1635 * JSAMPLEs, the entries of this array will too. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1636 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1637 bool is_padded; /* is the colorindex padded for odither? */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1638 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1639 int[MAX_Q_COMPS] Ncolors;// = new int [MAX_Q_COMPS]; /* # of values alloced to each component */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1640 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1641 /* Variables for ordered dithering */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1642 int row_index; /* cur row's vertical index in dither matrix */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1643 // ODITHER_MATRIX_PTR odither[MAX_Q_COMPS]; /* one dither array per component */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1644 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1645 /* Variables for Floyd-Steinberg dithering */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1646 // FSERRPTR fserrors[MAX_Q_COMPS]; /* accumulated errors */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1647 bool on_odd_row; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1648 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1649 void start_pass (jpeg_decompress_struct cinfo, bool is_pre_scan) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1650 error(); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1651 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1652 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1653 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1654 static final class jpeg_upsampler { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1655 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1656 // JMETHOD(void, upsample, (j_decompress_ptr cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1657 // JSAMPIMAGE input_buf, |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1658 // JDIMENSION *in_row_group_ctr, |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1659 // JDIMENSION in_row_groups_avail, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1660 // JSAMPARRAY output_buf, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1661 // JDIMENSION *out_row_ctr, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1662 // JDIMENSION out_rows_avail)); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1663 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1664 bool need_context_rows; /* TRUE if need rows above & below */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1665 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1666 /* Color conversion buffer. When using separate upsampling and color |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1667 * conversion steps, this buffer holds one upsampled row group until it |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1668 * has been color converted and output. |
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parents:
diff
changeset
|
1669 * Note: we do not allocate any storage for component(s) which are full-size, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1670 * ie do not need rescaling. The corresponding entry of color_buf[] is |
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parents:
diff
changeset
|
1671 * simply set to point to the input data array, thereby avoiding copying. |
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parents:
diff
changeset
|
1672 */ |
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parents:
diff
changeset
|
1673 byte[][][MAX_COMPONENTS] color_buf;// = new byte[MAX_COMPONENTS][][]; |
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parents:
diff
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|
1674 int[MAX_COMPONENTS] color_buf_offset;// = new int[MAX_COMPONENTS]; |
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parents:
diff
changeset
|
1675 |
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parents:
diff
changeset
|
1676 /* Per-component upsampling method pointers */ |
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parents:
diff
changeset
|
1677 int[MAX_COMPONENTS] methods;// = new int[MAX_COMPONENTS]; |
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parents:
diff
changeset
|
1678 |
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parents:
diff
changeset
|
1679 int next_row_out; /* counts rows emitted from color_buf */ |
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parents:
diff
changeset
|
1680 int rows_to_go; /* counts rows remaining in image */ |
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parents:
diff
changeset
|
1681 |
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parents:
diff
changeset
|
1682 /* Height of an input row group for each component. */ |
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parents:
diff
changeset
|
1683 int[MAX_COMPONENTS] rowgroup_height;// = new int[MAX_COMPONENTS]; |
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parents:
diff
changeset
|
1684 |
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parents:
diff
changeset
|
1685 /* These arrays save pixel expansion factors so that int_expand need not |
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parents:
diff
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|
1686 * recompute them each time. They are unused for other upsampling methods. |
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parents:
diff
changeset
|
1687 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1688 byte[MAX_COMPONENTS] h_expand;// = new byte[MAX_COMPONENTS]; |
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parents:
diff
changeset
|
1689 byte[MAX_COMPONENTS] v_expand;// = new byte[MAX_COMPONENTS]; |
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parents:
diff
changeset
|
1690 |
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parents:
diff
changeset
|
1691 void start_pass (jpeg_decompress_struct cinfo) { |
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parents:
diff
changeset
|
1692 jpeg_upsampler upsample = cinfo.upsample; |
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parents:
diff
changeset
|
1693 |
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parents:
diff
changeset
|
1694 /* Mark the conversion buffer empty */ |
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parents:
diff
changeset
|
1695 upsample.next_row_out = cinfo.max_v_samp_factor; |
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parents:
diff
changeset
|
1696 /* Initialize total-height counter for detecting bottom of image */ |
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parents:
diff
changeset
|
1697 upsample.rows_to_go = cinfo.output_height; |
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parents:
diff
changeset
|
1698 } |
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parents:
diff
changeset
|
1699 |
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parents:
diff
changeset
|
1700 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1701 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1702 static final class jpeg_marker_reader { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1703 /* Read a restart marker --- exported for use by entropy decoder only */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1704 // jpeg_marker_parser_method read_restart_marker; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1705 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1706 /* State of marker reader --- nominally internal, but applications |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1707 * supplying COM or APPn handlers might like to know the state. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1708 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1709 bool saw_SOI; /* found SOI? */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1710 bool saw_SOF; /* found SOF? */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1711 int next_restart_num; /* next restart number expected (0-7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1712 int discarded_bytes; /* # of bytes skipped looking for a marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1713 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1714 /* Application-overridable marker processing methods */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1715 // jpeg_marker_parser_method process_COM; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1716 // jpeg_marker_parser_method process_APPn[16]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1717 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1718 /* Limit on marker data length to save for each marker type */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1719 int length_limit_COM; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1720 int[16] length_limit_APPn;// = new int[16]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1721 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1722 /* Status of COM/APPn marker saving */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1723 // jpeg_marker_reader cur_marker; /* null if not processing a marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1724 // int bytes_read; /* data bytes read so far in marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1725 /* Note: cur_marker is not linked into marker_list until it's all read. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1726 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1727 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1728 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1729 static final class jpeg_d_main_controller { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1730 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1731 int process_data; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1732 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1733 /* Pointer to allocated workspace (M or M+2 row groups). */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1734 byte[][][MAX_COMPONENTS] buffer;// = new byte[MAX_COMPONENTS][][]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1735 int[MAX_COMPONENTS] buffer_offset;// = new int[MAX_COMPONENTS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1736 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1737 bool buffer_full; /* Have we gotten an iMCU row from decoder? */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1738 int[1] rowgroup_ctr;// = new int[1]; /* counts row groups output to postprocessor */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1739 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1740 /* Remaining fields are only used in the context case. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1741 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1742 /* These are the master pointers to the funny-order pointer lists. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1743 byte[][][][2] xbuffer;// = new byte[2][][][]; /* pointers to weird pointer lists */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1744 int[][2] xbuffer_offset;// = new int[2][]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1745 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1746 int whichptr; /* indicates which pointer set is now in use */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1747 int context_state; /* process_data state machine status */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1748 int rowgroups_avail; /* row groups available to postprocessor */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1749 int iMCU_row_ctr; /* counts iMCU rows to detect image top/bot */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1750 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1751 void start_pass (jpeg_decompress_struct cinfo, int pass_mode) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1752 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1753 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1754 switch (pass_mode) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1755 case JBUF_PASS_THRU: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1756 if (cinfo.upsample.need_context_rows) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1757 main.process_data = PROCESS_DATA_CONTEXT_MAIN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1758 make_funny_pointers(cinfo); /* Create the xbuffer[] lists */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1759 main.whichptr = 0; /* Read first iMCU row into xbuffer[0] */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1760 main.context_state = CTX_PREPARE_FOR_IMCU; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1761 main.iMCU_row_ctr = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1762 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1763 /* Simple case with no context needed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1764 main.process_data = PROCESS_DATA_SIMPLE_MAIN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1765 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1766 main.buffer_full = false; /* Mark buffer empty */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1767 main.rowgroup_ctr[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1768 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1769 // #ifdef QUANT_2PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1770 // case JBUF_CRANK_DEST: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1771 // /* For last pass of 2-pass quantization, just crank the postprocessor */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1772 // main.process_data = PROCESS_DATA_CRANK_POST; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1773 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1774 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1775 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1776 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1777 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1778 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1779 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1780 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1781 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1782 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1783 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1784 static final class jpeg_decomp_master { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1785 // JMETHOD(void, prepare_for_output_pass, (j_decompress_ptr cinfo)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1786 // JMETHOD(void, finish_output_pass, (j_decompress_ptr cinfo)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1787 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1788 /* State variables made visible to other modules */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1789 bool is_dummy_pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1790 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1791 int pass_number; /* # of passes completed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1792 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1793 bool using_merged_upsample; /* true if using merged upsample/cconvert */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1794 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1795 /* Saved references to initialized quantizer modules, |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1796 * in case we need to switch modes. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1797 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1798 jpeg_color_quantizer quantizer_1pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1799 jpeg_color_quantizer quantizer_2pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1800 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1801 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1802 static final class jpeg_inverse_dct { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1803 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1804 // /* It is useful to allow each component to have a separate IDCT method. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1805 // inverse_DCT_method_ptr inverse_DCT[MAX_COMPONENTS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1806 int[MAX_COMPONENTS] cur_method;// = new int[MAX_COMPONENTS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1807 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1808 void start_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1809 jpeg_inverse_dct idct = cinfo.idct; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1810 int ci, i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1811 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1812 int method = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1813 // inverse_DCT_method_ptr method_ptr = NULL; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1814 JQUANT_TBL qtbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1815 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1816 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1817 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1818 /* Select the proper IDCT routine for this component's scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1819 switch (compptr.DCT_scaled_size) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1820 // #ifdef IDCT_SCALING_SUPPORTED |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1821 // case 1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1822 // method_ptr = jpeg_idct_1x1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1823 // method = JDCT_ISLOW; /* jidctred uses islow-style table */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1824 // break; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1825 // case 2: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1826 // method_ptr = jpeg_idct_2x2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1827 // method = JDCT_ISLOW; /* jidctred uses islow-style table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1828 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1829 // case 4: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1830 // method_ptr = jpeg_idct_4x4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1831 // method = JDCT_ISLOW; /* jidctred uses islow-style table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1832 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1833 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1834 case DCTSIZE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1835 switch (cinfo.dct_method) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1836 // #ifdef DCT_ISLOW_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1837 case JDCT_ISLOW: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1838 // method_ptr = jpeg_idct_islow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1839 method = JDCT_ISLOW; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1840 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1841 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1842 // #ifdef DCT_IFAST_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1843 // case JDCT_IFAST: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1844 // method_ptr = jpeg_idct_ifast; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1845 // method = JDCT_IFAST; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1846 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1847 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1848 // #ifdef DCT_FLOAT_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1849 // case JDCT_FLOAT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1850 // method_ptr = jpeg_idct_float; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1851 // method = JDCT_FLOAT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1852 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1853 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1854 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1855 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1856 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1857 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1858 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1859 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1860 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1861 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1862 // ERREXIT1(cinfo, JERR_BAD_DCTSIZE, compptr.DCT_scaled_size); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1863 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1864 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1865 // idct.inverse_DCT[ci] = method_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1866 /* Create multiplier table from quant table. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1867 * However, we can skip this if the component is uninteresting |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1868 * or if we already built the table. Also, if no quant table |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1869 * has yet been saved for the component, we leave the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1870 * multiplier table all-zero; we'll be reading zeroes from the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1871 * coefficient controller's buffer anyway. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1872 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1873 if (! compptr.component_needed || idct.cur_method[ci] is method) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1874 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1875 qtbl = compptr.quant_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1876 if (qtbl is null) /* happens if no data yet for component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1877 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1878 idct.cur_method[ci] = method; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1879 switch (method) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1880 // #ifdef PROVIDE_ISLOW_TABLES |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1881 case JDCT_ISLOW: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1882 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1883 /* For LL&M IDCT method, multipliers are equal to raw quantization |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1884 * coefficients, but are stored as ints to ensure access efficiency. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1885 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1886 int[] ismtbl = compptr.dct_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1887 for (i = 0; i < DCTSIZE2; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1888 ismtbl[i] = qtbl.quantval[i]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1889 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1890 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1891 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1892 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1893 // #ifdef DCT_IFAST_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1894 // case JDCT_IFAST: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1895 // { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1896 // /* For AA&N IDCT method, multipliers are equal to quantization |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1897 // * coefficients scaled by scalefactor[row]*scalefactor[col], where |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1898 // * scalefactor[0] = 1 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1899 // * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1900 // * For integer operation, the multiplier table is to be scaled by |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1901 // * IFAST_SCALE_BITS. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1902 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1903 // int[] ifmtbl = compptr.dct_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1904 // short aanscales[] = { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1905 // /* precomputed values scaled up by 14 bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1906 // 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1907 // 22725, 31521, 29692, 26722, 22725, 17855, 12299, 6270, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1908 // 21407, 29692, 27969, 25172, 21407, 16819, 11585, 5906, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1909 // 19266, 26722, 25172, 22654, 19266, 15137, 10426, 5315, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1910 // 16384, 22725, 21407, 19266, 16384, 12873, 8867, 4520, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1911 // 12873, 17855, 16819, 15137, 12873, 10114, 6967, 3552, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1912 // 8867, 12299, 11585, 10426, 8867, 6967, 4799, 2446, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1913 // 4520, 6270, 5906, 5315, 4520, 3552, 2446, 1247 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1914 // }; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1915 // SHIFT_TEMPS |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1916 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1917 // for (i = 0; i < DCTSIZE2; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1918 // ifmtbl[i] = DESCALE(MULTIPLY16V16( qtbl.quantval[i], aanscales[i]), CONST_BITS-IFAST_SCALE_BITS); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1919 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1920 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1921 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1922 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1923 // #ifdef DCT_FLOAT_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1924 // case JDCT_FLOAT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1925 // { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1926 // /* For float AA&N IDCT method, multipliers are equal to quantization |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1927 // * coefficients scaled by scalefactor[row]*scalefactor[col], where |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1928 // * scalefactor[0] = 1 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1929 // * scalefactor[k] = cos(k*PI/16) * sqrt(2) for k=1..7 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1930 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1931 // FLOAT_MULT_TYPE * fmtbl = (FLOAT_MULT_TYPE *) compptr.dct_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1932 // int row, col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1933 // static const double aanscalefactor[DCTSIZE] = { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1934 // 1.0, 1.387039845, 1.306562965, 1.175875602, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1935 // 1.0, 0.785694958, 0.541196100, 0.275899379 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1936 // }; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1937 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1938 // i = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1939 // for (row = 0; row < DCTSIZE; row++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1940 // for (col = 0; col < DCTSIZE; col++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1941 // fmtbl[i] = (FLOAT_MULT_TYPE) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1942 // ((double) qtbl.quantval[i] * |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1943 // aanscalefactor[row] * aanscalefactor[col]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1944 // i++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1945 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1946 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1947 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1948 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1949 // #endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1950 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1951 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1952 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1953 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1954 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1955 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1956 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1957 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1958 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1959 static final class jpeg_input_controller { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1960 int consume_input; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1961 bool has_multiple_scans; /* True if file has multiple scans */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1962 bool eoi_reached; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1963 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
1964 bool inheaders; /* true until first SOS is reached */ |
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|
1965 } |
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|
1966 |
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1967 static final class jpeg_color_deconverter { |
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1968 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo)); |
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1969 int color_convert; |
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1970 |
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|
1971 /* Private state for YCC.RGB conversion */ |
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1972 int[] Cr_r_tab; /* => table for Cr to R conversion */ |
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1973 int[] Cb_b_tab; /* => table for Cb to B conversion */ |
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1974 int[] Cr_g_tab; /* => table for Cr to G conversion */ |
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|
1975 int[] Cb_g_tab; /* => table for Cb to G conversion */ |
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|
1976 |
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1977 void start_pass (jpeg_decompress_struct cinfo) { |
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|
1978 /* no work needed */ |
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|
1979 } |
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|
1980 |
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|
1981 } |
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parents:
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|
1982 |
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parents:
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|
1983 static final class jpeg_d_post_controller { |
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|
1984 // JMETHOD(void, start_pass, (j_decompress_ptr cinfo, J_BUF_MODE pass_mode)); |
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|
1985 int post_process_data; |
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parents:
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|
1986 |
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|
1987 /* Color quantization source buffer: this holds output data from |
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|
1988 * the upsample/color conversion step to be passed to the quantizer. |
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parents:
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|
1989 * For two-pass color quantization, we need a full-image buffer; |
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|
1990 * for one-pass operation, a strip buffer is sufficient. |
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|
1991 */ |
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|
1992 int[] whole_image; /* virtual array, or NULL if one-pass */ |
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|
1993 int[][] buffer; /* strip buffer, or current strip of virtual */ |
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|
1994 int strip_height; /* buffer size in rows */ |
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parents:
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|
1995 /* for two-pass mode only: */ |
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parents:
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|
1996 int starting_row; /* row # of first row in current strip */ |
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|
1997 int next_row; /* index of next row to fill/empty in strip */ |
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parents:
diff
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|
1998 |
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|
1999 void start_pass (jpeg_decompress_struct cinfo, int pass_mode) { |
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parents:
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|
2000 jpeg_d_post_controller post = cinfo.post; |
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parents:
diff
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|
2001 |
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parents:
diff
changeset
|
2002 switch (pass_mode) { |
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parents:
diff
changeset
|
2003 case JBUF_PASS_THRU: |
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parents:
diff
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|
2004 if (cinfo.quantize_colors) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2005 error(SWT.ERROR_NOT_IMPLEMENTED); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2006 // /* Single-pass processing with color quantization. */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2007 // post.post_process_data = POST_PROCESS_1PASS; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2008 // /* We could be doing buffered-image output before starting a 2-pass |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2009 // * color quantization; in that case, jinit_d_post_controller did not |
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parents:
diff
changeset
|
2010 // * allocate a strip buffer. Use the virtual-array buffer as workspace. |
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parents:
diff
changeset
|
2011 // */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2012 // if (post.buffer is null) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2013 // post.buffer = (*cinfo.mem.access_virt_sarray) |
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add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2014 // ((j_common_ptr) cinfo, post.whole_image, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2015 // (JDIMENSION) 0, post.strip_height, TRUE); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2016 // } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2017 } else { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2018 /* For single-pass processing without color quantization, |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2019 * I have no work to do; just call the upsampler directly. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2020 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2021 post.post_process_data = POST_PROCESS_DATA_UPSAMPLE; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2022 } |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2023 break; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2024 // #ifdef QUANT_2PASS_SUPPORTED |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2025 // case JBUF_SAVE_AND_PASS: |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2026 // /* First pass of 2-pass quantization */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2027 // if (post.whole_image is NULL) |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2028 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
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add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2029 // post.pub.post_process_data = post_process_prepass; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2030 // break; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2031 // case JBUF_CRANK_DEST: |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2032 // /* Second pass of 2-pass quantization */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2033 // if (post.whole_image is NULL) |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2034 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2035 // post.pub.post_process_data = post_process_2pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2036 // break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2037 // #endif /* QUANT_2PASS_SUPPORTED */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2038 default: |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2039 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2040 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2041 break; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2042 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2043 post.starting_row = post.next_row = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2044 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2045 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2046 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2047 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2048 static final class jpeg_decompress_struct { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2049 // jpeg_error_mgr * err; /* Error handler module */\ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2050 // struct jpeg_memory_mgr * mem; /* Memory manager module */\ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2051 // struct jpeg_progress_mgr * progress; /* Progress monitor, or null if none */\ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2052 // void * client_data; /* Available for use by application */\ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2053 bool is_decompressor; /* So common code can tell which is which */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2054 int global_state; /* For checking call sequence validity */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2055 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2056 // /* Source of compressed data */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2057 // struct jpeg_source_mgr * src; |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2058 InputStream inputStream; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2059 byte[] buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2060 int bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2061 int bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2062 bool start_of_file; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2063 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2064 /* Basic description of image --- filled in by jpeg_read_header(). */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2065 /* Application may inspect these values to decide how to process image. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2066 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2067 int image_width; /* nominal image width (from SOF marker) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2068 int image_height; /* nominal image height */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2069 int num_components; /* # of color components in JPEG image */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2070 int jpeg_color_space; /* colorspace of JPEG image */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2071 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2072 /* Decompression processing parameters --- these fields must be set before |
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add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2073 * calling jpeg_start_decompress(). Note that jpeg_read_header() initializes |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2074 * them to default values. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2075 */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2076 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2077 int out_color_space; /* colorspace for output */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2078 |
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add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2079 int scale_num, scale_denom; /* fraction by which to scale image */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2080 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2081 double output_gamma; /* image gamma wanted in output */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2082 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2083 bool buffered_image; /* true=multiple output passes */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2084 bool raw_data_out; /* true=downsampled data wanted */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2085 |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2086 int dct_method; /* IDCT algorithm selector */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2087 bool do_fancy_upsampling; /* true=apply fancy upsampling */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2088 bool do_block_smoothing; /* true=apply interblock smoothing */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2089 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2090 bool quantize_colors; /* true=colormapped output wanted */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2091 /* the following are ignored if not quantize_colors: */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2092 int dither_mode; /* type of color dithering to use */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2093 bool two_pass_quantize; /* true=use two-pass color quantization */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2094 int desired_number_of_colors; /* max # colors to use in created colormap */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2095 /* these are significant only in buffered-image mode: */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2096 bool enable_1pass_quant; /* enable future use of 1-pass quantizer */ |
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Frank Benoit <benoit@tionex.de>
parents:
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|
2097 bool enable_external_quant;/* enable future use of external colormap */ |
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diff
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|
2098 bool enable_2pass_quant; /* enable future use of 2-pass quantizer */ |
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parents:
diff
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|
2099 |
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parents:
diff
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|
2100 /* Description of actual output image that will be returned to application. |
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parents:
diff
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|
2101 * These fields are computed by jpeg_start_decompress(). |
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parents:
diff
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|
2102 * You can also use jpeg_calc_output_dimensions() to determine these values |
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parents:
diff
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|
2103 * in advance of calling jpeg_start_decompress(). |
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parents:
diff
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|
2104 */ |
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parents:
diff
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|
2105 |
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parents:
diff
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|
2106 int output_width; /* scaled image width */ |
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parents:
diff
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|
2107 int output_height; /* scaled image height */ |
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diff
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|
2108 int out_color_components; /* # of color components in out_color_space */ |
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parents:
diff
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|
2109 int output_components; /* # of color components returned */ |
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parents:
diff
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|
2110 /* output_components is 1 (a colormap index) when quantizing colors; |
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parents:
diff
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|
2111 * otherwise it equals out_color_components. |
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parents:
diff
changeset
|
2112 */ |
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parents:
diff
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|
2113 int rec_outbuf_height; /* min recommended height of scanline buffer */ |
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diff
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|
2114 /* If the buffer passed to jpeg_read_scanlines() is less than this many rows |
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parents:
diff
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|
2115 * high, space and time will be wasted due to unnecessary data copying. |
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parents:
diff
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|
2116 * Usually rec_outbuf_height will be 1 or 2, at most 4. |
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parents:
diff
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|
2117 */ |
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parents:
diff
changeset
|
2118 |
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parents:
diff
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|
2119 /* When quantizing colors, the output colormap is described by these fields. |
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parents:
diff
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|
2120 * The application can supply a colormap by setting colormap non-null before |
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parents:
diff
changeset
|
2121 * calling jpeg_start_decompress; otherwise a colormap is created during |
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parents:
diff
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|
2122 * jpeg_start_decompress or jpeg_start_output. |
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parents:
diff
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|
2123 * The map has out_color_components rows and actual_number_of_colors columns. |
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parents:
diff
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|
2124 */ |
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parents:
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|
2125 int actual_number_of_colors; /* number of entries in use */ |
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parents:
diff
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|
2126 int[] colormap; /* The color map as a 2-D pixel array */ |
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parents:
diff
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|
2127 |
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parents:
diff
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|
2128 /* State variables: these variables indicate the progress of decompression. |
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parents:
diff
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|
2129 * The application may examine these but must not modify them. |
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parents:
diff
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|
2130 */ |
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parents:
diff
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|
2131 |
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parents:
diff
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|
2132 /* Row index of next scanline to be read from jpeg_read_scanlines(). |
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parents:
diff
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|
2133 * Application may use this to control its processing loop, e.g., |
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parents:
diff
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|
2134 * "while (output_scanline < output_height)". |
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parents:
diff
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|
2135 */ |
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parents:
diff
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|
2136 int output_scanline; /* 0 .. output_height-1 */ |
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parents:
diff
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|
2137 |
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parents:
diff
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|
2138 /* Current input scan number and number of iMCU rows completed in scan. |
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parents:
diff
changeset
|
2139 * These indicate the progress of the decompressor input side. |
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parents:
diff
changeset
|
2140 */ |
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parents:
diff
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|
2141 int input_scan_number; /* Number of SOS markers seen so far */ |
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parents:
diff
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|
2142 int input_iMCU_row; /* Number of iMCU rows completed */ |
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parents:
diff
changeset
|
2143 |
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parents:
diff
changeset
|
2144 /* The "output scan number" is the notional scan being displayed by the |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2145 * output side. The decompressor will not allow output scan/row number |
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parents:
diff
changeset
|
2146 * to get ahead of input scan/row, but it can fall arbitrarily far behind. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2147 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2148 int output_scan_number; /* Nominal scan number being displayed */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2149 int output_iMCU_row; /* Number of iMCU rows read */ |
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parents:
diff
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|
2150 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2151 /* Current progression status. coef_bits[c][i] indicates the precision |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2152 * with which component c's DCT coefficient i (in zigzag order) is known. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2153 * It is -1 when no data has yet been received, otherwise it is the point |
6dd524f61e62
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parents:
diff
changeset
|
2154 * transform (shift) value for the most recent scan of the coefficient |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2155 * (thus, 0 at completion of the progression). |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2156 * This pointer is null when reading a non-progressive file. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2157 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2158 int[][] coef_bits; /* -1 or current Al value for each coef */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2159 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2160 /* Internal JPEG parameters --- the application usually need not look at |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2161 * these fields. Note that the decompressor output side may not use |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2162 * any parameters that can change between scans. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2163 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2164 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2165 /* Quantization and Huffman tables are carried forward across input |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2166 * datastreams when processing abbreviated JPEG datastreams. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2167 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2168 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2169 JQUANT_TBL[NUM_QUANT_TBLS] quant_tbl_ptrs;// = new JQUANT_TBL[NUM_QUANT_TBLS]; |
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parents:
diff
changeset
|
2170 /* ptrs to coefficient quantization tables, or null if not defined */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2171 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2172 JHUFF_TBL[NUM_HUFF_TBLS] dc_huff_tbl_ptrs;// = new JHUFF_TBL[NUM_HUFF_TBLS]; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2173 JHUFF_TBL[NUM_HUFF_TBLS] ac_huff_tbl_ptrs;// = new JHUFF_TBL[NUM_HUFF_TBLS]; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2174 /* ptrs to Huffman coding tables, or null if not defined */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2175 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2176 /* These parameters are never carried across datastreams, since they |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2177 * are given in SOF/SOS markers or defined to be reset by SOI. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2178 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2179 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2180 int data_precision; /* bits of precision in image data */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2181 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2182 jpeg_component_info[] comp_info; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2183 /* comp_info[i] describes component that appears i'th in SOF */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2184 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2185 bool progressive_mode; /* true if SOFn specifies progressive mode */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2186 bool arith_code; /* true=arithmetic coding, false=Huffman */ |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2187 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2188 byte[NUM_ARITH_TBLS] arith_dc_L;// = new byte[NUM_ARITH_TBLS]; /* L values for DC arith-coding tables */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2189 byte[NUM_ARITH_TBLS] arith_dc_U;// = new byte[NUM_ARITH_TBLS]; /* U values for DC arith-coding tables */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2190 byte[NUM_ARITH_TBLS] arith_ac_K;// = new byte[NUM_ARITH_TBLS]; /* Kx values for AC arith-coding tables */ |
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parents:
diff
changeset
|
2191 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2192 int restart_interval; /* MCUs per restart interval, or 0 for no restart */ |
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parents:
diff
changeset
|
2193 |
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parents:
diff
changeset
|
2194 /* These fields record data obtained from optional markers recognized by |
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parents:
diff
changeset
|
2195 * the JPEG library. |
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parents:
diff
changeset
|
2196 */ |
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parents:
diff
changeset
|
2197 bool saw_JFIF_marker; /* true iff a JFIF APP0 marker was found */ |
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parents:
diff
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|
2198 /* Data copied from JFIF marker; only valid if saw_JFIF_marker is true: */ |
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parents:
diff
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|
2199 byte JFIF_major_version; /* JFIF version number */ |
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parents:
diff
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|
2200 byte JFIF_minor_version; |
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parents:
diff
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|
2201 byte density_unit; /* JFIF code for pixel size units */ |
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parents:
diff
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|
2202 short X_density; /* Horizontal pixel density */ |
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parents:
diff
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|
2203 short Y_density; /* Vertical pixel density */ |
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parents:
diff
changeset
|
2204 bool saw_Adobe_marker; /* true iff an Adobe APP14 marker was found */ |
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parents:
diff
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|
2205 byte Adobe_transform; /* Color transform code from Adobe marker */ |
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parents:
diff
changeset
|
2206 |
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parents:
diff
changeset
|
2207 bool CCIR601_sampling; /* true=first samples are cosited */ |
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parents:
diff
changeset
|
2208 |
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parents:
diff
changeset
|
2209 /* Aside from the specific data retained from APPn markers known to the |
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parents:
diff
changeset
|
2210 * library, the uninterpreted contents of any or all APPn and COM markers |
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parents:
diff
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|
2211 * can be saved in a list for examination by the application. |
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parents:
diff
changeset
|
2212 */ |
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parents:
diff
changeset
|
2213 jpeg_marker_reader marker_list; /* Head of list of saved markers */ |
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parents:
diff
changeset
|
2214 |
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parents:
diff
changeset
|
2215 /* Remaining fields are known throughout decompressor, but generally |
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parents:
diff
changeset
|
2216 * should not be touched by a surrounding application. |
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parents:
diff
changeset
|
2217 */ |
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parents:
diff
changeset
|
2218 |
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parents:
diff
changeset
|
2219 /* |
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parents:
diff
changeset
|
2220 * These fields are computed during decompression startup |
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parents:
diff
changeset
|
2221 */ |
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parents:
diff
changeset
|
2222 int max_h_samp_factor; /* largest h_samp_factor */ |
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parents:
diff
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|
2223 int max_v_samp_factor; /* largest v_samp_factor */ |
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parents:
diff
changeset
|
2224 |
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parents:
diff
changeset
|
2225 int min_DCT_scaled_size; /* smallest DCT_scaled_size of any component */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2226 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2227 int total_iMCU_rows; /* # of iMCU rows in image */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2228 /* The coefficient controller's input and output progress is measured in |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2229 * units of "iMCU" (interleaved MCU) rows. These are the same as MCU rows |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2230 * in fully interleaved JPEG scans, but are used whether the scan is |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2231 * interleaved or not. We define an iMCU row as v_samp_factor DCT block |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2232 * rows of each component. Therefore, the IDCT output contains |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2233 * v_samp_factor*DCT_scaled_size sample rows of a component per iMCU row. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2234 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2235 |
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parents:
diff
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|
2236 byte[] sample_range_limit; /* table for fast range-limiting */ |
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parents:
diff
changeset
|
2237 int sample_range_limit_offset; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2238 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2239 /* |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2240 * These fields are valid during any one scan. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2241 * They describe the components and MCUs actually appearing in the scan. |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2242 * Note that the decompressor output side must not use these fields. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2243 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2244 int comps_in_scan; /* # of JPEG components in this scan */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2245 jpeg_component_info[MAX_COMPS_IN_SCAN] cur_comp_info;// = new jpeg_component_info[MAX_COMPS_IN_SCAN]; |
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parents:
diff
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|
2246 /* *cur_comp_info[i] describes component that appears i'th in SOS */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2247 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2248 int MCUs_per_row; /* # of MCUs across the image */ |
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parents:
diff
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|
2249 int MCU_rows_in_scan; /* # of MCU rows in the image */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2250 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2251 int blocks_in_MCU; /* # of DCT blocks per MCU */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2252 int[D_MAX_BLOCKS_IN_MCU] MCU_membership;// = new int[D_MAX_BLOCKS_IN_MCU]; |
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parents:
diff
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|
2253 /* MCU_membership[i] is index in cur_comp_info of component owning */ |
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parents:
diff
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|
2254 /* i'th block in an MCU */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2255 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2256 int Ss, Se, Ah, Al; /* progressive JPEG parameters for scan */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2257 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2258 /* This field is shared between entropy decoder and marker parser. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2259 * It is either zero or the code of a JPEG marker that has been |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2260 * read from the data source, but has not yet been processed. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2261 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2262 int unread_marker; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2263 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2264 int[DCTSIZE2] workspace;// = new int[DCTSIZE2]; |
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parents:
diff
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|
2265 int[1] row_ctr;// = new int[1]; |
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parents:
diff
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|
2266 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2267 /* |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2268 * Links to decompression subobjects (methods, private variables of modules) |
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parents:
diff
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|
2269 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2270 jpeg_decomp_master master; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2271 jpeg_d_main_controller main; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2272 jpeg_d_coef_controller coef; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2273 jpeg_d_post_controller post; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2274 jpeg_input_controller inputctl; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2275 jpeg_marker_reader marker; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2276 jpeg_entropy_decoder entropy; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2277 jpeg_inverse_dct idct; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2278 jpeg_upsampler upsample; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2279 jpeg_color_deconverter cconvert; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2280 jpeg_color_quantizer cquantize; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2281 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2282 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2283 static void error() { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2284 SWT.error(SWT.ERROR_INVALID_IMAGE); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2285 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2286 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2287 static void error(int code) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2288 SWT.error(code); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2289 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2290 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2291 static void error(String msg) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2292 SWT.error(SWT.ERROR_INVALID_IMAGE, null, msg); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2293 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2294 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2295 static void jinit_marker_reader (jpeg_decompress_struct cinfo) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2296 jpeg_marker_reader marker = cinfo.marker = new jpeg_marker_reader(); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2297 // int i; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2298 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2299 /* Initialize COM/APPn processing. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2300 * By default, we examine and then discard APP0 and APP14, |
6dd524f61e62
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parents:
diff
changeset
|
2301 * but simply discard COM and all other APPn. |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2302 */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2303 // marker.process_COM = skip_variable; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2304 marker.length_limit_COM = 0; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2305 // for (i = 0; i < 16; i++) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2306 // marker.process_APPn[i] = skip_variable; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2307 // marker.length_limit_APPn[i] = 0; |
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parents:
diff
changeset
|
2308 // } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2309 // marker.process_APPn[0] = get_interesting_appn; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2310 // marker.process_APPn[14] = get_interesting_appn; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2311 /* Reset marker processing state */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2312 reset_marker_reader(cinfo); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2313 } |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2314 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2315 static void jinit_d_coef_controller (jpeg_decompress_struct cinfo, bool need_full_buffer) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2316 jpeg_d_coef_controller coef = new jpeg_d_coef_controller(); |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2317 cinfo.coef = coef; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2318 // coef.pub.start_input_pass = start_input_pass; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2319 // coef.pub.start_output_pass = start_output_pass; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
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|
2320 coef.coef_bits_latch = null; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2321 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2322 /* Create the coefficient buffer. */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2323 if (need_full_buffer) { |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2324 //#ifdef D_MULTISCAN_FILES_SUPPORTED |
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parents:
diff
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|
2325 /* Allocate a full-image virtual array for each component, */ |
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parents:
diff
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|
2326 /* padded to a multiple of samp_factor DCT blocks in each direction. */ |
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parents:
diff
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|
2327 /* Note we ask for a pre-zeroed array. */ |
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parents:
diff
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|
2328 int ci, access_rows; |
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parents:
diff
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|
2329 jpeg_component_info compptr; |
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parents:
diff
changeset
|
2330 |
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parents:
diff
changeset
|
2331 for (ci = 0; ci < cinfo.num_components; ci++) { |
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parents:
diff
changeset
|
2332 compptr = cinfo.comp_info[ci]; |
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parents:
diff
changeset
|
2333 access_rows = compptr.v_samp_factor; |
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parents:
diff
changeset
|
2334 //#ifdef BLOCK_SMOOTHING_SUPPORTED |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2335 /* If block smoothing could be used, need a bigger window */ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2336 if (cinfo.progressive_mode) |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2337 access_rows *= 3; |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2338 //#endif |
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parents:
diff
changeset
|
2339 coef.whole_image[ci] = |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2340 new short[][][]( |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2341 cast(int)jround_up( compptr.height_in_blocks, compptr.v_samp_factor), |
6dd524f61e62
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2342 cast(int)jround_up( compptr.width_in_blocks, compptr.h_samp_factor), |
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parents:
diff
changeset
|
2343 DCTSIZE2 |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2344 ); |
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parents:
diff
changeset
|
2345 } |
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parents:
diff
changeset
|
2346 // coef.consume_data = consume_data; |
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parents:
diff
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|
2347 coef.decompress_data = DECOMPRESS_DATA; |
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parents:
diff
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|
2348 coef.coef_arrays = coef.whole_image[0]; /* link to virtual arrays */ |
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parents:
diff
changeset
|
2349 // #else |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2350 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
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parents:
diff
changeset
|
2351 // #endif |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2352 } else { |
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parents:
diff
changeset
|
2353 /* We only need a single-MCU buffer. */ |
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parents:
diff
changeset
|
2354 foreach( inout el; coef.MCU_buffer ){ |
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Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2355 el = new short[](DCTSIZE2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2356 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2357 // coef.consume_data = dummy_consume_data; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2358 coef.decompress_data = DECOMPRESS_ONEPASS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2359 coef.coef_arrays = null; /* flag for no virtual arrays */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2360 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2361 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2362 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2363 static void start_output_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2364 //#ifdef BLOCK_SMOOTHING_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2365 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2366 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2367 /* If multipass, check to see whether to use block smoothing on this pass */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2368 if (coef.coef_arrays !is null) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2369 if (cinfo.do_block_smoothing && smoothing_ok(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2370 coef.decompress_data = DECOMPRESS_SMOOTH_DATA; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2371 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2372 coef.decompress_data = DECOMPRESS_DATA; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2373 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2374 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2375 cinfo.output_iMCU_row = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2376 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2377 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2378 static void jpeg_create_decompress(jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2379 cinfo.is_decompressor = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2380 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2381 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2382 /* Initialize marker processor so application can override methods |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2383 * for COM, APPn markers before calling jpeg_read_header. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2384 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2385 cinfo.marker_list = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2386 jinit_marker_reader(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2387 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2388 /* And initialize the overall input controller. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2389 jinit_input_controller(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2390 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2391 /* OK, I'm ready */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2392 cinfo.global_state = DSTATE_START; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2393 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2394 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2395 static void jpeg_calc_output_dimensions (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2396 /* Do computations that are needed before master selection phase */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2397 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2398 //#ifdef IDCT_SCALING_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2399 // int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2400 // jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2401 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2402 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2403 /* Prevent application from calling me at wrong times */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2404 if (cinfo.global_state !is DSTATE_READY) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2405 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2406 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2407 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2408 //#ifdef IDCT_SCALING_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2409 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2410 // /* Compute actual output image dimensions and DCT scaling choices. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2411 // if (cinfo.scale_num * 8 <= cinfo.scale_denom) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2412 // /* Provide 1/8 scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2413 // cinfo.output_width = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2414 // jdiv_round_up(cinfo.image_width, 8L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2415 // cinfo.output_height = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2416 // jdiv_round_up(cinfo.image_height, 8L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2417 // cinfo.min_DCT_scaled_size = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2418 // } else if (cinfo.scale_num * 4 <= cinfo.scale_denom) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2419 // /* Provide 1/4 scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2420 // cinfo.output_width = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2421 // jdiv_round_up(cinfo.image_width, 4L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2422 // cinfo.output_height = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2423 // jdiv_round_up(cinfo.image_height, 4L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2424 // cinfo.min_DCT_scaled_size = 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2425 // } else if (cinfo.scale_num * 2 <= cinfo.scale_denom) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2426 // /* Provide 1/2 scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2427 // cinfo.output_width = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2428 // jdiv_round_up(cinfo.image_width, 2L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2429 // cinfo.output_height = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2430 // jdiv_round_up(cinfo.image_height, 2L); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2431 // cinfo.min_DCT_scaled_size = 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2432 // } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2433 // /* Provide 1/1 scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2434 // cinfo.output_width = cinfo.image_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2435 // cinfo.output_height = cinfo.image_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2436 // cinfo.min_DCT_scaled_size = DCTSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2437 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2438 // /* In selecting the actual DCT scaling for each component, we try to |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2439 // * scale up the chroma components via IDCT scaling rather than upsampling. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2440 // * This saves time if the upsampler gets to use 1:1 scaling. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2441 // * Note this code assumes that the supported DCT scalings are powers of 2. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2442 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2443 // for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2444 // compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2445 // int ssize = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2446 // while (ssize < DCTSIZE && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2447 // (compptr.h_samp_factor * ssize * 2 <= cinfo.max_h_samp_factor * cinfo.min_DCT_scaled_size) && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2448 // (compptr.v_samp_factor * ssize * 2 <= cinfo.max_v_samp_factor * cinfo.min_DCT_scaled_size)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2449 // { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2450 // ssize = ssize * 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2451 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2452 // compptr.DCT_scaled_size = ssize; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2453 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2454 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2455 // /* Recompute downsampled dimensions of components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2456 // * application needs to know these if using raw downsampled data. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2457 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2458 // for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2459 // compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2460 // /* Size in samples, after IDCT scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2461 // compptr.downsampled_width = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2462 // jdiv_round_up(cast(long) cinfo.image_width * cast(long) (compptr.h_samp_factor * compptr.DCT_scaled_size), |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2463 // (cinfo.max_h_samp_factor * DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2464 // compptr.downsampled_height = cast(int) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2465 // jdiv_round_up(cast(long) cinfo.image_height * cast(long) (compptr.v_samp_factor * compptr.DCT_scaled_size), |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2466 // (cinfo.max_v_samp_factor * DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2467 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2468 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2469 //#else /* !IDCT_SCALING_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2470 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2471 /* Hardwire it to "no scaling" */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2472 cinfo.output_width = cinfo.image_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2473 cinfo.output_height = cinfo.image_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2474 /* jdinput.c has already initialized DCT_scaled_size to DCTSIZE, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2475 * and has computed unscaled downsampled_width and downsampled_height. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2476 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2477 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2478 //#endif /* IDCT_SCALING_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2479 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2480 /* Report number of components in selected colorspace. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2481 /* Probably this should be in the color conversion module... */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2482 switch (cinfo.out_color_space) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2483 case JCS_GRAYSCALE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2484 cinfo.out_color_components = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2485 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2486 case JCS_RGB: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2487 if (RGB_PIXELSIZE !is 3) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2488 cinfo.out_color_components = RGB_PIXELSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2489 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2490 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2491 //FALLTHROUGH |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2492 case JCS_YCbCr: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2493 cinfo.out_color_components = 3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2494 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2495 case JCS_CMYK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2496 case JCS_YCCK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2497 cinfo.out_color_components = 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2498 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2499 default: /* else must be same colorspace as in file */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2500 cinfo.out_color_components = cinfo.num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2501 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2502 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2503 cinfo.output_components = (cinfo.quantize_colors ? 1 : cinfo.out_color_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2504 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2505 /* See if upsampler will want to emit more than one row at a time */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2506 if (use_merged_upsample(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2507 cinfo.rec_outbuf_height = cinfo.max_v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2508 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2509 cinfo.rec_outbuf_height = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2510 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2511 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2512 static bool use_merged_upsample (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2513 //#ifdef UPSAMPLE_MERGING_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2514 /* Merging is the equivalent of plain box-filter upsampling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2515 if (cinfo.do_fancy_upsampling || cinfo.CCIR601_sampling) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2516 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2517 /* jdmerge.c only supports YCC=>RGB color conversion */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2518 if (cinfo.jpeg_color_space !is JCS_YCbCr || cinfo.num_components !is 3 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2519 cinfo.out_color_space !is JCS_RGB || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2520 cinfo.out_color_components !is RGB_PIXELSIZE) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2521 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2522 /* and it only handles 2h1v or 2h2v sampling ratios */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2523 if (cinfo.comp_info[0].h_samp_factor !is 2 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2524 cinfo.comp_info[1].h_samp_factor !is 1 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2525 cinfo.comp_info[2].h_samp_factor !is 1 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2526 cinfo.comp_info[0].v_samp_factor > 2 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2527 cinfo.comp_info[1].v_samp_factor !is 1 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2528 cinfo.comp_info[2].v_samp_factor !is 1) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2529 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2530 /* furthermore, it doesn't work if we've scaled the IDCTs differently */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2531 if (cinfo.comp_info[0].DCT_scaled_size !is cinfo.min_DCT_scaled_size || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2532 cinfo.comp_info[1].DCT_scaled_size !is cinfo.min_DCT_scaled_size || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2533 cinfo.comp_info[2].DCT_scaled_size !is cinfo.min_DCT_scaled_size) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2534 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2535 /* ??? also need to test for upsample-time rescaling, when & if supported */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2536 return true; /* by golly, it'll work... */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2537 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2538 // return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2539 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2540 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2541 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2542 static void prepare_range_limit_table (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2543 /* Allocate and fill in the sample_range_limit table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2544 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2545 byte[] table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2546 int i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2547 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2548 table = new byte[5 * (MAXJSAMPLE+1) + CENTERJSAMPLE]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2549 int offset = (MAXJSAMPLE+1); /* allow negative subscripts of simple table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2550 cinfo.sample_range_limit_offset = offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2551 cinfo.sample_range_limit = table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2552 /* First segment of "simple" table: limit[x] = 0 for x < 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2553 /* Main part of "simple" table: limit[x] = x */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2554 for (i = 0; i <= MAXJSAMPLE; i++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2555 table[i + offset] = cast(byte)i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2556 offset += CENTERJSAMPLE; /* Point to where post-IDCT table starts */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2557 /* End of simple table, rest of first half of post-IDCT table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2558 for (i = CENTERJSAMPLE; i < 2*(MAXJSAMPLE+1); i++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2559 table[i+offset] = cast(byte)MAXJSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2560 /* Second half of post-IDCT table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2561 System.arraycopy(cinfo.sample_range_limit, cinfo.sample_range_limit_offset, table, offset + (4 * (MAXJSAMPLE+1) - CENTERJSAMPLE), CENTERJSAMPLE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2562 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2563 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2564 static void build_ycc_rgb_table (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2565 jpeg_color_deconverter cconvert = cinfo.cconvert; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2566 int i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2567 int x; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2568 // SHIFT_TEMPS |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2569 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2570 cconvert.Cr_r_tab = new int[MAXJSAMPLE+1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2571 cconvert.Cb_b_tab = new int[MAXJSAMPLE+1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2572 cconvert.Cr_g_tab = new int[MAXJSAMPLE+1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2573 cconvert.Cb_g_tab = new int[MAXJSAMPLE+1]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2574 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2575 for (i = 0, x = -CENTERJSAMPLE; i <= MAXJSAMPLE; i++, x++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2576 /* i is the actual input pixel value, in the range 0..MAXJSAMPLE */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2577 /* The Cb or Cr value we are thinking of is x = i - CENTERJSAMPLE */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2578 /* Cr=>R value is nearest int to 1.40200 * x */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2579 cconvert.Cr_r_tab[i] = (cast(int)(1.40200f * (1<<SCALEBITS) + 0.5f) * x + ONE_HALF) >> SCALEBITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2580 /* Cb=>B value is nearest int to 1.77200 * x */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2581 cconvert.Cb_b_tab[i] = (cast(int)(1.77200f * (1<<SCALEBITS) + 0.5f) * x + ONE_HALF) >> SCALEBITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2582 /* Cr=>G value is scaled-up -0.71414 * x */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2583 cconvert.Cr_g_tab[i] = (cast(int)(- (0.71414f * (1<<SCALEBITS) + 0.5f)) * x); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2584 /* Cb=>G value is scaled-up -0.34414 * x */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2585 /* We also add in ONE_HALF so that need not do it in inner loop */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2586 cconvert.Cb_g_tab[i] = (cast(int)(- (0.34414f* (1<<SCALEBITS) + 0.5f)) * x + ONE_HALF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2587 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2588 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2589 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2590 static void jinit_color_deconverter (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2591 jpeg_color_deconverter cconvert = cinfo.cconvert = new jpeg_color_deconverter(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2592 // cconvert.start_pass = start_pass_dcolor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2593 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2594 /* Make sure num_components agrees with jpeg_color_space */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2595 switch (cinfo.jpeg_color_space) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2596 case JCS_GRAYSCALE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2597 if (cinfo.num_components !is 1) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2598 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2599 // ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2600 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2601 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2602 case JCS_RGB: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2603 case JCS_YCbCr: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2604 if (cinfo.num_components !is 3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2605 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2606 // ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2607 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2608 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2609 case JCS_CMYK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2610 case JCS_YCCK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2611 if (cinfo.num_components !is 4) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2612 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2613 // ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2614 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2615 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2616 default: /* JCS_UNKNOWN can be anything */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2617 if (cinfo.num_components < 1) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2618 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2619 // ERREXIT(cinfo, JERR_BAD_J_COLORSPACE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2620 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2621 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2622 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2623 /* Set out_color_components and conversion method based on requested space. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2624 * Also clear the component_needed flags for any unused components, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2625 * so that earlier pipeline stages can avoid useless computation. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2626 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2627 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2628 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2629 switch (cinfo.out_color_space) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2630 case JCS_GRAYSCALE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2631 cinfo.out_color_components = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2632 if (cinfo.jpeg_color_space is JCS_GRAYSCALE || cinfo.jpeg_color_space is JCS_YCbCr) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2633 cconvert.color_convert = GRAYSCALE_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2634 /* For color.grayscale conversion, only the Y (0) component is needed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2635 for (ci = 1; ci < cinfo.num_components; ci++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2636 cinfo.comp_info[ci].component_needed = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2637 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2638 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2639 // ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2640 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2641 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2642 case JCS_RGB: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2643 cinfo.out_color_components = RGB_PIXELSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2644 if (cinfo.jpeg_color_space is JCS_YCbCr) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2645 cconvert.color_convert = YCC_RGB_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2646 build_ycc_rgb_table(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2647 } else if (cinfo.jpeg_color_space is JCS_GRAYSCALE) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2648 cconvert.color_convert = GRAY_RGB_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2649 } else if (cinfo.jpeg_color_space is JCS_RGB && RGB_PIXELSIZE is 3) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2650 cconvert.color_convert = NULL_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2651 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2652 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2653 // ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2654 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2655 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2656 case JCS_CMYK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2657 cinfo.out_color_components = 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2658 if (cinfo.jpeg_color_space is JCS_YCCK) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2659 cconvert.color_convert = YCCK_CMYK_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2660 build_ycc_rgb_table(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2661 } else if (cinfo.jpeg_color_space is JCS_CMYK) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2662 cconvert.color_convert = NULL_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2663 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2664 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2665 // ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2666 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2667 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2668 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2669 /* Permit null conversion to same output space */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2670 if (cinfo.out_color_space is cinfo.jpeg_color_space) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2671 cinfo.out_color_components = cinfo.num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2672 cconvert.color_convert = NULL_CONVERT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2673 } else /* unsupported non-null conversion */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2674 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2675 // ERREXIT(cinfo, JERR_CONVERSION_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2676 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2677 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2678 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2679 if (cinfo.quantize_colors) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2680 cinfo.output_components = 1; /* single colormapped output component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2681 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2682 cinfo.output_components = cinfo.out_color_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2683 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2684 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2685 static void jinit_d_post_controller (jpeg_decompress_struct cinfo, bool need_full_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2686 jpeg_d_post_controller post = cinfo.post = new jpeg_d_post_controller(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2687 // post.pub.start_pass = start_pass_dpost; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2688 post.whole_image = null; /* flag for no virtual arrays */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2689 post.buffer = null; /* flag for no strip buffer */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2690 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2691 /* Create the quantization buffer, if needed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2692 if (cinfo.quantize_colors) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2693 error(SWT.ERROR_NOT_IMPLEMENTED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2694 // /* The buffer strip height is max_v_samp_factor, which is typically |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2695 // * an efficient number of rows for upsampling to return. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2696 // * (In the presence of output rescaling, we might want to be smarter?) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2697 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2698 // post.strip_height = cinfo.max_v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2699 // if (need_full_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2700 // /* Two-pass color quantization: need full-image storage. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2701 // /* We round up the number of rows to a multiple of the strip height. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2702 //#ifdef QUANT_2PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2703 // post.whole_image = (*cinfo.mem.request_virt_sarray) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2704 // ((j_common_ptr) cinfo, JPOOL_IMAGE, FALSE, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2705 // cinfo.output_width * cinfo.out_color_components, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2706 // (JDIMENSION) jround_up(cast(long) cinfo.output_height, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2707 // cast(long) post.strip_height), |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2708 // post.strip_height); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2709 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2710 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2711 //#endif /* QUANT_2PASS_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2712 // } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2713 // /* One-pass color quantization: just make a strip buffer. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2714 // post.buffer = (*cinfo.mem.alloc_sarray) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2715 // ((j_common_ptr) cinfo, JPOOL_IMAGE, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2716 // cinfo.output_width * cinfo.out_color_components, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2717 // post.strip_height); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2718 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2719 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2720 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2721 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2722 static void make_funny_pointers (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2723 /* Create the funny pointer lists discussed in the comments above. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2724 * The actual workspace is already allocated (in main.buffer), |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2725 * and the space for the pointer lists is allocated too. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2726 * This routine just fills in the curiously ordered lists. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2727 * This will be repeated at the beginning of each pass. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2728 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2729 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2730 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2731 int ci, i, rgroup; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2732 int M = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2733 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2734 byte[][] buf, xbuf0, xbuf1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2735 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2736 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2737 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2738 rgroup = (compptr.v_samp_factor * compptr.DCT_scaled_size) / |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2739 cinfo.min_DCT_scaled_size; /* height of a row group of component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2740 xbuf0 = main.xbuffer[0][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2741 int xbuf0_offset = main.xbuffer_offset[0][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2742 xbuf1 = main.xbuffer[1][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2743 int xbuf1_offset = main.xbuffer_offset[1][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2744 /* First copy the workspace pointers as-is */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2745 buf = main.buffer[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2746 for (i = 0; i < rgroup * (M + 2); i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2747 xbuf0[i + xbuf0_offset] = xbuf1[i + xbuf1_offset] = buf[i]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2748 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2749 /* In the second list, put the last four row groups in swapped order */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2750 for (i = 0; i < rgroup * 2; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2751 xbuf1[rgroup*(M-2) + i + xbuf1_offset] = buf[rgroup*M + i]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2752 xbuf1[rgroup*M + i + xbuf1_offset] = buf[rgroup*(M-2) + i]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2753 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2754 /* The wraparound pointers at top and bottom will be filled later |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2755 * (see set_wraparound_pointers, below). Initially we want the "above" |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2756 * pointers to duplicate the first actual data line. This only needs |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2757 * to happen in xbuffer[0]. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2758 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2759 for (i = 0; i < rgroup; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2760 xbuf0[i - rgroup + xbuf0_offset] = xbuf0[0 + xbuf0_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2761 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2762 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2763 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2764 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2765 static void alloc_funny_pointers (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2766 /* Allocate space for the funny pointer lists. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2767 * This is done only once, not once per pass. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2768 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2769 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2770 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2771 int ci, rgroup; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2772 int M = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2773 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2774 byte[][] xbuf; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2775 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2776 /* Get top-level space for component array pointers. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2777 * We alloc both arrays with one call to save a few cycles. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2778 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2779 main.xbuffer[0] = new byte[][][](cinfo.num_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2780 main.xbuffer[1] = new byte[][][](cinfo.num_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2781 main.xbuffer_offset[0] = new int[](cinfo.num_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2782 main.xbuffer_offset[1] = new int[](cinfo.num_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2783 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2784 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2785 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2786 rgroup = (compptr.v_samp_factor * compptr.DCT_scaled_size) / cinfo.min_DCT_scaled_size; /* height of a row group of component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2787 /* Get space for pointer lists --- M+4 row groups in each list. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2788 * We alloc both pointer lists with one call to save a few cycles. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2789 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2790 xbuf = new byte[][](2 * (rgroup * (M + 4))); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2791 int offset = rgroup; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2792 main.xbuffer_offset[0][ci] = offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2793 main.xbuffer[0][ci] = xbuf; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2794 offset += rgroup * (M + 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2795 main.xbuffer_offset[1][ci] = offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2796 main.xbuffer[1][ci] = xbuf; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2797 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2798 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2799 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2800 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2801 static void jinit_d_main_controller (jpeg_decompress_struct cinfo, bool need_full_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2802 int ci, rgroup, ngroups; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2803 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2804 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2805 jpeg_d_main_controller main = cinfo.main = new jpeg_d_main_controller(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2806 // main.pub.start_pass = start_pass_main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2807 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2808 if (need_full_buffer) /* shouldn't happen */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2809 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2810 // ERREXIT(cinfo, JERR_BAD_BUFFER_MODE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2811 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2812 /* Allocate the workspace. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2813 * ngroups is the number of row groups we need. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2814 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2815 if (cinfo.upsample.need_context_rows) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2816 if (cinfo.min_DCT_scaled_size < 2) /* unsupported, see comments above */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2817 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2818 // ERREXIT(cinfo, JERR_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2819 alloc_funny_pointers(cinfo); /* Alloc space for xbuffer[] lists */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2820 ngroups = cinfo.min_DCT_scaled_size + 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2821 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2822 ngroups = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2823 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2824 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2825 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2826 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2827 rgroup = (compptr.v_samp_factor * compptr.DCT_scaled_size) / cinfo.min_DCT_scaled_size; /* height of a row group of component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2828 main.buffer[ci] = new byte[][]( rgroup * ngroups, compptr.width_in_blocks * compptr.DCT_scaled_size ); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2829 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2830 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2831 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2832 static long jround_up (long a, long b) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2833 /* Compute a rounded up to next multiple of b, ie, ceil(a/b)*b */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2834 /* Assumes a >= 0, b > 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2835 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2836 a += b - 1L; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2837 return a - (a % b); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2838 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2839 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2840 static void jinit_upsampler (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2841 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2842 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2843 bool need_buffer, do_fancy; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2844 int h_in_group, v_in_group, h_out_group, v_out_group; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2845 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2846 jpeg_upsampler upsample = new jpeg_upsampler(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2847 cinfo.upsample = upsample; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2848 // upsample.start_pass = start_pass_upsample; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2849 // upsample.upsample = sep_upsample; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2850 upsample.need_context_rows = false; /* until we find out differently */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2851 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2852 if (cinfo.CCIR601_sampling) /* this isn't supported */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2853 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2854 // ERREXIT(cinfo, JERR_CCIR601_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2855 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2856 /* jdmainct.c doesn't support context rows when min_DCT_scaled_size = 1, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2857 * so don't ask for it. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2858 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2859 do_fancy = cinfo.do_fancy_upsampling && cinfo.min_DCT_scaled_size > 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2860 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2861 /* Verify we can handle the sampling factors, select per-component methods, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2862 * and create storage as needed. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2863 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2864 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2865 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2866 /* Compute size of an "input group" after IDCT scaling. This many samples |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2867 * are to be converted to max_h_samp_factor * max_v_samp_factor pixels. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2868 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2869 h_in_group = (compptr.h_samp_factor * compptr.DCT_scaled_size) / |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2870 cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2871 v_in_group = (compptr.v_samp_factor * compptr.DCT_scaled_size) / |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2872 cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2873 h_out_group = cinfo.max_h_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2874 v_out_group = cinfo.max_v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2875 upsample.rowgroup_height[ci] = v_in_group; /* save for use later */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2876 need_buffer = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2877 if (! compptr.component_needed) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2878 /* Don't bother to upsample an uninteresting component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2879 upsample.methods[ci] = NOOP_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2880 need_buffer = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2881 } else if (h_in_group is h_out_group && v_in_group is v_out_group) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2882 /* Fullsize components can be processed without any work. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2883 upsample.methods[ci] = FULLSIZE_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2884 need_buffer = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2885 } else if (h_in_group * 2 is h_out_group && v_in_group is v_out_group) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2886 /* Special cases for 2h1v upsampling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2887 if (do_fancy && compptr.downsampled_width > 2) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2888 upsample.methods[ci] = H2V1_FANCY_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2889 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2890 upsample.methods[ci] = H2V1_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2891 } else if (h_in_group * 2 is h_out_group && v_in_group * 2 is v_out_group) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2892 /* Special cases for 2h2v upsampling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2893 if (do_fancy && compptr.downsampled_width > 2) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2894 upsample.methods[ci] = H2V2_FANCY_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2895 upsample.need_context_rows = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2896 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2897 upsample.methods[ci] = H2V2_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2898 } else if ((h_out_group % h_in_group) is 0 && (v_out_group % v_in_group) is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2899 /* Generic integral-factors upsampling method */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2900 upsample.methods[ci] = INT_UPSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2901 upsample.h_expand[ci] = cast(byte) (h_out_group / h_in_group); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2902 upsample.v_expand[ci] = cast(byte) (v_out_group / v_in_group); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2903 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2904 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2905 // ERREXIT(cinfo, JERR_FRACT_SAMPLE_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2906 if (need_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2907 upsample.color_buf[ci] = new byte[][]( cinfo.max_v_samp_factor, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2908 cast(int) jround_up(cinfo.output_width, cinfo.max_h_samp_factor)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2909 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2910 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2911 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2912 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2913 static void jinit_phuff_decoder (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2914 int[][] coef_bit_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2915 int ci, i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2916 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2917 cinfo.entropy = new phuff_entropy_decoder(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2918 // entropy.pub.start_pass = start_pass_phuff_decoder; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2919 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2920 /* Create progression status table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2921 cinfo.coef_bits = new int[][]( cinfo.num_components, DCTSIZE2 ); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2922 coef_bit_ptr = cinfo.coef_bits; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2923 for (ci = 0; ci < cinfo.num_components; ci++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2924 for (i = 0; i < DCTSIZE2; i++) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2925 coef_bit_ptr[ci][i] = -1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2926 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2927 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2928 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2929 static void jinit_huff_decoder (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2930 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2931 cinfo.entropy = new huff_entropy_decoder(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2932 // entropy.pub.start_pass = start_pass_huff_decoder; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2933 // entropy.pub.decode_mcu = decode_mcu; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2934 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2935 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2936 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2937 static void jinit_inverse_dct (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2938 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2939 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2940 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2941 jpeg_inverse_dct idct = cinfo.idct = new jpeg_inverse_dct(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2942 // idct.pub.start_pass = start_pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2943 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2944 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2945 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2946 /* Allocate and pre-zero a multiplier table for each component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2947 compptr.dct_table = new int[DCTSIZE2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2948 /* Mark multiplier table not yet set up for any method */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2949 idct.cur_method[ci] = -1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2950 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2951 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2952 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2953 static final int CONST_BITS = 13; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2954 static final int PASS1_BITS = 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2955 static final int RANGE_MASK =(MAXJSAMPLE * 4 + 3); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2956 static void jpeg_idct_islow (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2957 short[] coef_block, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2958 byte[][] output_buf, int output_buf_offset, int output_col) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2959 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2960 int tmp0, tmp1, tmp2, tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2961 int tmp10, tmp11, tmp12, tmp13; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2962 int z1, z2, z3, z4, z5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2963 short[] inptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2964 int[] quantptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2965 int[] wsptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2966 byte[] outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2967 byte[] range_limit = cinfo.sample_range_limit; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2968 int range_limit_offset = cinfo.sample_range_limit_offset + CENTERJSAMPLE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2969 int ctr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2970 int[] workspace = cinfo.workspace; /* buffers data between passes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2971 // SHIFT_TEMPS |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2972 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2973 /* Pass 1: process columns from input, store into work array. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2974 /* Note results are scaled up by sqrt(8) compared to a true IDCT; */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2975 /* furthermore, we scale the results by 2**PASS1_BITS. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2976 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2977 inptr = coef_block; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2978 quantptr = compptr.dct_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2979 wsptr = workspace; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2980 int inptr_offset = 0, quantptr_offset = 0, wsptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2981 for (ctr = DCTSIZE; ctr > 0; ctr--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2982 /* Due to quantization, we will usually find that many of the input |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2983 * coefficients are zero, especially the AC terms. We can exploit this |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2984 * by short-circuiting the IDCT calculation for any column in which all |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2985 * the AC terms are zero. In that case each output is equal to the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2986 * DC coefficient (with scale factor as needed). |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2987 * With typical images and quantization tables, half or more of the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2988 * column DCT calculations can be simplified this way. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2989 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2990 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2991 if (inptr[DCTSIZE*1+inptr_offset] is 0 && inptr[DCTSIZE*2+inptr_offset] is 0 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2992 inptr[DCTSIZE*3+inptr_offset] is 0 && inptr[DCTSIZE*4+inptr_offset] is 0 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2993 inptr[DCTSIZE*5+inptr_offset] is 0 && inptr[DCTSIZE*6+inptr_offset] is 0 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2994 inptr[DCTSIZE*7+inptr_offset] is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2995 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2996 /* AC terms all zero */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2997 int dcval = ((inptr[DCTSIZE*0+inptr_offset]) * quantptr[DCTSIZE*0+quantptr_offset]) << PASS1_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2998 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
2999 wsptr[DCTSIZE*0+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3000 wsptr[DCTSIZE*1+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3001 wsptr[DCTSIZE*2+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3002 wsptr[DCTSIZE*3+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3003 wsptr[DCTSIZE*4+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3004 wsptr[DCTSIZE*5+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3005 wsptr[DCTSIZE*6+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3006 wsptr[DCTSIZE*7+wsptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3007 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3008 inptr_offset++; /* advance pointers to next column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3009 quantptr_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3010 wsptr_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3011 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3012 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3013 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3014 /* Even part: reverse the even part of the forward DCT. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3015 /* The rotator is sqrt(2)*c(-6). */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3016 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3017 z2 = ((inptr[DCTSIZE*2+inptr_offset]) * quantptr[DCTSIZE*2+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3018 z3 = ((inptr[DCTSIZE*6+inptr_offset]) * quantptr[DCTSIZE*6+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3019 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3020 z1 = ((z2 + z3) * 4433/*FIX_0_541196100*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3021 tmp2 = z1 + (z3 * - 15137/*FIX_1_847759065*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3022 tmp3 = z1 + (z2 * 6270/*FIX_0_765366865*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3023 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3024 z2 = ((inptr[DCTSIZE*0+inptr_offset]) * quantptr[DCTSIZE*0+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3025 z3 = ((inptr[DCTSIZE*4+inptr_offset]) * quantptr[DCTSIZE*4+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3026 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3027 tmp0 = (z2 + z3) << CONST_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3028 tmp1 = (z2 - z3) << CONST_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3029 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3030 tmp10 = tmp0 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3031 tmp13 = tmp0 - tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3032 tmp11 = tmp1 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3033 tmp12 = tmp1 - tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3034 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3035 /* Odd part per figure 8; the matrix is unitary and hence its |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3036 * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3037 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3038 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3039 tmp0 = ((inptr[DCTSIZE*7+inptr_offset]) * quantptr[DCTSIZE*7+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3040 tmp1 = ((inptr[DCTSIZE*5+inptr_offset]) * quantptr[DCTSIZE*5+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3041 tmp2 = ((inptr[DCTSIZE*3+inptr_offset]) * quantptr[DCTSIZE*3+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3042 tmp3 = ((inptr[DCTSIZE*1+inptr_offset]) * quantptr[DCTSIZE*1+quantptr_offset]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3043 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3044 z1 = tmp0 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3045 z2 = tmp1 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3046 z3 = tmp0 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3047 z4 = tmp1 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3048 z5 = ((z3 + z4) * 9633/*FIX_1_175875602*/); /* sqrt(2) * c3 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3049 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3050 tmp0 = (tmp0 * 2446/*FIX_0_298631336*/); /* sqrt(2) * (-c1+c3+c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3051 tmp1 = (tmp1 * 16819/*FIX_2_053119869*/); /* sqrt(2) * ( c1+c3-c5+c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3052 tmp2 = (tmp2 * 25172/*FIX_3_072711026*/); /* sqrt(2) * ( c1+c3+c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3053 tmp3 = (tmp3 * 12299/*FIX_1_501321110*/); /* sqrt(2) * ( c1+c3-c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3054 z1 = (z1 * - 7373/*FIX_0_899976223*/); /* sqrt(2) * (c7-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3055 z2 = (z2 * - 20995/*FIX_2_562915447*/); /* sqrt(2) * (-c1-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3056 z3 = (z3 * - 16069/*FIX_1_961570560*/); /* sqrt(2) * (-c3-c5) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3057 z4 = (z4 * - 3196/*FIX_0_390180644*/); /* sqrt(2) * (c5-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3058 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3059 z3 += z5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3060 z4 += z5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3061 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3062 tmp0 += z1 + z3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3063 tmp1 += z2 + z4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3064 tmp2 += z2 + z3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3065 tmp3 += z1 + z4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3066 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3067 /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3068 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3069 // #define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3070 wsptr[DCTSIZE*0+wsptr_offset] = (((tmp10 + tmp3) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3071 wsptr[DCTSIZE*7+wsptr_offset] = (((tmp10 - tmp3) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3072 wsptr[DCTSIZE*1+wsptr_offset] = (((tmp11 + tmp2) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3073 wsptr[DCTSIZE*6+wsptr_offset] = (((tmp11 - tmp2) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3074 wsptr[DCTSIZE*2+wsptr_offset] = (((tmp12 + tmp1) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3075 wsptr[DCTSIZE*5+wsptr_offset] = (((tmp12 - tmp1) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3076 wsptr[DCTSIZE*3+wsptr_offset] = (((tmp13 + tmp0) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3077 wsptr[DCTSIZE*4+wsptr_offset] = (((tmp13 - tmp0) + (1 << ((CONST_BITS-PASS1_BITS)-1))) >> (CONST_BITS-PASS1_BITS)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3078 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3079 inptr_offset++; /* advance pointers to next column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3080 quantptr_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3081 wsptr_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3082 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3083 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3084 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3085 /* Pass 2: process rows from work array, store into output array. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3086 /* Note that we must descale the results by a factor of 8 is 2**3, */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3087 /* and also undo the PASS1_BITS scaling. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3088 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3089 int outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3090 wsptr = workspace; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3091 wsptr_offset =0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3092 for (ctr = 0; ctr < DCTSIZE; ctr++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3093 outptr = output_buf[ctr+output_buf_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3094 outptr_offset = output_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3095 /* Rows of zeroes can be exploited in the same way as we did with columns. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3096 * However, the column calculation has created many nonzero AC terms, so |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3097 * the simplification applies less often (typically 5% to 10% of the time). |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3098 * On machines with very fast multiplication, it's possible that the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3099 * test takes more time than it's worth. In that case this section |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3100 * may be commented out. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3101 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3102 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3103 //#ifndef NO_ZERO_ROW_TEST |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3104 if (wsptr[1+wsptr_offset] is 0 && wsptr[2+wsptr_offset] is 0 && wsptr[3+wsptr_offset] is 0 && wsptr[4+wsptr_offset] is 0 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3105 wsptr[5+wsptr_offset] is 0 && wsptr[6+wsptr_offset] is 0 && wsptr[7+wsptr_offset] is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3106 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3107 /* AC terms all zero */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3108 // #define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3109 byte dcval = range_limit[range_limit_offset + ((((wsptr[0+wsptr_offset]) + (1 << ((PASS1_BITS+3)-1))) >> PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3110 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3111 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3112 outptr[0+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3113 outptr[1+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3114 outptr[2+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3115 outptr[3+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3116 outptr[4+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3117 outptr[5+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3118 outptr[6+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3119 outptr[7+outptr_offset] = dcval; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3120 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3121 wsptr_offset += DCTSIZE; /* advance pointer to next row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3122 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3123 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3124 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3125 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3126 /* Even part: reverse the even part of the forward DCT. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3127 /* The rotator is sqrt(2)*c(-6). */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3128 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3129 z2 = wsptr[2+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3130 z3 = wsptr[6+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3131 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3132 z1 = ((z2 + z3) * 4433/*FIX_0_541196100*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3133 tmp2 = z1 + (z3 * - 15137/*FIX_1_847759065*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3134 tmp3 = z1 + (z2 * 6270/*FIX_0_765366865*/); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3135 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3136 tmp0 = (wsptr[0+wsptr_offset] + wsptr[4+wsptr_offset]) << CONST_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3137 tmp1 = (wsptr[0+wsptr_offset] - wsptr[4+wsptr_offset]) << CONST_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3138 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3139 tmp10 = tmp0 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3140 tmp13 = tmp0 - tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3141 tmp11 = tmp1 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3142 tmp12 = tmp1 - tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3143 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3144 /* Odd part per figure 8; the matrix is unitary and hence its |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3145 * transpose is its inverse. i0..i3 are y7,y5,y3,y1 respectively. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3146 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3147 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3148 tmp0 = wsptr[7+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3149 tmp1 = wsptr[5+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3150 tmp2 = wsptr[3+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3151 tmp3 = wsptr[1+wsptr_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3152 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3153 z1 = tmp0 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3154 z2 = tmp1 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3155 z3 = tmp0 + tmp2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3156 z4 = tmp1 + tmp3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3157 z5 = ((z3 + z4) * 9633/*FIX_1_175875602*/); /* sqrt(2) * c3 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3158 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3159 tmp0 = (tmp0 * 2446/*FIX_0_298631336*/); /* sqrt(2) * (-c1+c3+c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3160 tmp1 = (tmp1 * 16819/*FIX_2_053119869*/); /* sqrt(2) * ( c1+c3-c5+c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3161 tmp2 = (tmp2 * 25172/*FIX_3_072711026*/); /* sqrt(2) * ( c1+c3+c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3162 tmp3 = (tmp3 * 12299/*FIX_1_501321110*/); /* sqrt(2) * ( c1+c3-c5-c7) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3163 z1 = (z1 * - 7373/*FIX_0_899976223*/); /* sqrt(2) * (c7-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3164 z2 = (z2 * - 20995/*FIX_2_562915447*/); /* sqrt(2) * (-c1-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3165 z3 = (z3 * - 16069/*FIX_1_961570560*/); /* sqrt(2) * (-c3-c5) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3166 z4 = (z4 * - 3196/*FIX_0_390180644*/); /* sqrt(2) * (c5-c3) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3167 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3168 z3 += z5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3169 z4 += z5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3170 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3171 tmp0 += z1 + z3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3172 tmp1 += z2 + z4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3173 tmp2 += z2 + z3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3174 tmp3 += z1 + z4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3175 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3176 /* Final output stage: inputs are tmp10..tmp13, tmp0..tmp3 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3177 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3178 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3179 // #define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3180 outptr[0+outptr_offset] = range_limit[range_limit_offset + ((((tmp10 + tmp3) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3181 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3182 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3183 outptr[7+outptr_offset] = range_limit[range_limit_offset + ((((tmp10 - tmp3) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3184 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3185 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3186 outptr[1+outptr_offset] = range_limit[range_limit_offset + ((((tmp11 + tmp2) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3187 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3188 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3189 outptr[6+outptr_offset] = range_limit[range_limit_offset + ((((tmp11 - tmp2) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3190 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3191 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3192 outptr[2+outptr_offset] = range_limit[range_limit_offset + ((((tmp12 + tmp1) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3193 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3194 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3195 outptr[5+outptr_offset] = range_limit[range_limit_offset + ((((tmp12 - tmp1) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3196 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3197 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3198 outptr[3+outptr_offset] = range_limit[range_limit_offset + ((((tmp13 + tmp0) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3199 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3200 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3201 outptr[4+outptr_offset] = range_limit[range_limit_offset + ((((tmp13 - tmp0) + (1 << ((CONST_BITS+PASS1_BITS+3)-1))) >> |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3202 CONST_BITS+PASS1_BITS+3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3203 & RANGE_MASK)]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3204 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3205 wsptr_offset += DCTSIZE; /* advance pointer to next row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3206 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3207 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3208 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3209 static void upsample (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3210 byte[][][] input_buf, int[] input_buf_offset, int[] in_row_group_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3211 int in_row_groups_avail, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3212 byte[][] output_buf, int[] out_row_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3213 int out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3214 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3215 sep_upsample(cinfo, input_buf, input_buf_offset, in_row_group_ctr, in_row_groups_avail, output_buf, out_row_ctr, out_rows_avail); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3216 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3217 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3218 static bool smoothing_ok (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3219 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3220 bool smoothing_useful = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3221 int ci, coefi; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3222 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3223 JQUANT_TBL qtable; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3224 int[] coef_bits; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3225 int[] coef_bits_latch; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3226 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3227 if (! cinfo.progressive_mode || cinfo.coef_bits is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3228 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3229 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3230 /* Allocate latch area if not already done */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3231 if (coef.coef_bits_latch is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3232 coef.coef_bits_latch = new int[cinfo.num_components * SAVED_COEFS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3233 coef_bits_latch = coef.coef_bits_latch; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3234 int coef_bits_latch_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3235 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3236 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3237 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3238 /* All components' quantization values must already be latched. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3239 if ((qtable = compptr.quant_table) is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3240 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3241 /* Verify DC & first 5 AC quantizers are nonzero to avoid zero-divide. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3242 if (qtable.quantval[0] is 0 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3243 qtable.quantval[Q01_POS] is 0 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3244 qtable.quantval[Q10_POS] is 0 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3245 qtable.quantval[Q20_POS] is 0 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3246 qtable.quantval[Q11_POS] is 0 || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3247 qtable.quantval[Q02_POS] is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3248 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3249 /* DC values must be at least partly known for all components. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3250 coef_bits = cinfo.coef_bits[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3251 if (coef_bits[0] < 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3252 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3253 /* Block smoothing is helpful if some AC coefficients remain inaccurate. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3254 for (coefi = 1; coefi <= 5; coefi++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3255 coef_bits_latch[coefi+coef_bits_latch_offset] = coef_bits[coefi]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3256 if (coef_bits[coefi] !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3257 smoothing_useful = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3258 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3259 coef_bits_latch_offset += SAVED_COEFS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3260 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3261 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3262 return smoothing_useful; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3263 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3264 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3265 static void master_selection (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3266 jpeg_decomp_master master = cinfo.master; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3267 bool use_c_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3268 long samplesperrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3269 int jd_samplesperrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3270 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3271 /* Initialize dimensions and other stuff */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3272 jpeg_calc_output_dimensions(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3273 prepare_range_limit_table(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3274 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3275 /* Width of an output scanline must be representable as JDIMENSION. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3276 samplesperrow = cast(long) cinfo.output_width * cast(long) cinfo.out_color_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3277 jd_samplesperrow = cast(int) samplesperrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3278 if ( jd_samplesperrow !is samplesperrow) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3279 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3280 // ERREXIT(cinfo, JERR_WIDTH_OVERFLOW); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3281 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3282 /* Initialize my private state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3283 master.pass_number = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3284 master.using_merged_upsample = use_merged_upsample(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3285 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3286 /* Color quantizer selection */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3287 master.quantizer_1pass = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3288 master.quantizer_2pass = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3289 /* No mode changes if not using buffered-image mode. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3290 if (! cinfo.quantize_colors || ! cinfo.buffered_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3291 cinfo.enable_1pass_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3292 cinfo.enable_external_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3293 cinfo.enable_2pass_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3294 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3295 if (cinfo.quantize_colors) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3296 error(SWT.ERROR_NOT_IMPLEMENTED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3297 // if (cinfo.raw_data_out) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3298 // ERREXIT(cinfo, JERR_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3299 // /* 2-pass quantizer only works in 3-component color space. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3300 // if (cinfo.out_color_components !is 3) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3301 // cinfo.enable_1pass_quant = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3302 // cinfo.enable_external_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3303 // cinfo.enable_2pass_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3304 // cinfo.colormap = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3305 // } else if (cinfo.colormap !is null) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3306 // cinfo.enable_external_quant = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3307 // } else if (cinfo.two_pass_quantize) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3308 // cinfo.enable_2pass_quant = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3309 // } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3310 // cinfo.enable_1pass_quant = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3311 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3312 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3313 // if (cinfo.enable_1pass_quant) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3314 //#ifdef QUANT_1PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3315 // jinit_1pass_quantizer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3316 // master.quantizer_1pass = cinfo.cquantize; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3317 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3318 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3319 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3320 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3321 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3322 // /* We use the 2-pass code to map to external colormaps. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3323 // if (cinfo.enable_2pass_quant || cinfo.enable_external_quant) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3324 //#ifdef QUANT_2PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3325 // jinit_2pass_quantizer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3326 // master.quantizer_2pass = cinfo.cquantize; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3327 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3328 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3329 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3330 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3331 // /* If both quantizers are initialized, the 2-pass one is left active; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3332 // * this is necessary for starting with quantization to an external map. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3333 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3334 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3335 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3336 /* Post-processing: in particular, color conversion first */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3337 if (! cinfo.raw_data_out) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3338 if (master.using_merged_upsample) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3339 //#ifdef UPSAMPLE_MERGING_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3340 // jinit_merged_upsampler(cinfo); /* does color conversion too */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3341 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3342 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3343 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3344 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3345 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3346 jinit_color_deconverter(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3347 jinit_upsampler(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3348 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3349 jinit_d_post_controller(cinfo, cinfo.enable_2pass_quant); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3350 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3351 /* Inverse DCT */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3352 jinit_inverse_dct(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3353 /* Entropy decoding: either Huffman or arithmetic coding. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3354 if (cinfo.arith_code) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3355 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3356 // ERREXIT(cinfo, JERR_ARITH_NOTIMPL); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3357 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3358 if (cinfo.progressive_mode) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3359 //#ifdef D_PROGRESSIVE_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3360 jinit_phuff_decoder(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3361 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3362 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3363 //#endif |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3364 } else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3365 jinit_huff_decoder(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3366 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3367 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3368 /* Initialize principal buffer controllers. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3369 use_c_buffer = cinfo.inputctl.has_multiple_scans || cinfo.buffered_image; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3370 jinit_d_coef_controller(cinfo, use_c_buffer); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3371 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3372 if (! cinfo.raw_data_out) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3373 jinit_d_main_controller(cinfo, false /* never need full buffer here */); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3374 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3375 /* Initialize input side of decompressor to consume first scan. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3376 start_input_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3377 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3378 //#ifdef D_MULTISCAN_FILES_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3379 /* If jpeg_start_decompress will read the whole file, initialize |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3380 * progress monitoring appropriately. The input step is counted |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3381 * as one pass. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3382 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3383 // if (cinfo.progress !is null && ! cinfo.buffered_image && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3384 // cinfo.inputctl.has_multiple_scans) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3385 // int nscans; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3386 // /* Estimate number of scans to set pass_limit. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3387 // if (cinfo.progressive_mode) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3388 // /* Arbitrarily estimate 2 interleaved DC scans + 3 AC scans/component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3389 // nscans = 2 + 3 * cinfo.num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3390 // } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3391 // /* For a nonprogressive multiscan file, estimate 1 scan per component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3392 // nscans = cinfo.num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3393 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3394 // cinfo.progress.pass_counter = 0L; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3395 // cinfo.progress.pass_limit = cast(long) cinfo.total_iMCU_rows * nscans; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3396 // cinfo.progress.completed_passes = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3397 // cinfo.progress.total_passes = (cinfo.enable_2pass_quant ? 3 : 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3398 // /* Count the input pass as done */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3399 // master.pass_number++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3400 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3401 //#endif /* D_MULTISCAN_FILES_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3402 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3403 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3404 static void jinit_master_decompress (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3405 jpeg_decomp_master master = new jpeg_decomp_master(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3406 cinfo.master = master; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3407 // master.prepare_for_output_pass = prepare_for_output_pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3408 // master.finish_output_pass = finish_output_pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3409 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3410 master.is_dummy_pass = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3411 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3412 master_selection(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3413 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3414 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3415 static void |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3416 jcopy_sample_rows (byte[][] input_array, int source_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3417 byte[][] output_array, int dest_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3418 int num_rows, int num_cols) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3419 /* Copy some rows of samples from one place to another. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3420 * num_rows rows are copied from input_array[source_row++] |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3421 * to output_array[dest_row++]; these areas may overlap for duplication. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3422 * The source and destination arrays must be at least as wide as num_cols. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3423 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3424 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3425 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3426 int count = num_cols; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3427 int row; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3428 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3429 int input_array_offset = source_row; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3430 int output_array_offset = dest_row; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3431 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3432 for (row = num_rows; row > 0; row--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3433 inptr = input_array[input_array_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3434 outptr = output_array[output_array_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3435 System.arraycopy(inptr, 0, outptr, 0, count); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3436 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3437 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3438 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3439 static bool jpeg_start_decompress (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3440 if (cinfo.global_state is DSTATE_READY) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3441 /* First call: initialize master control, select active modules */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3442 jinit_master_decompress(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3443 if (cinfo.buffered_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3444 /* No more work here; expecting jpeg_start_output next */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3445 cinfo.global_state = DSTATE_BUFIMAGE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3446 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3447 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3448 cinfo.global_state = DSTATE_PRELOAD; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3449 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3450 if (cinfo.global_state is DSTATE_PRELOAD) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3451 /* If file has multiple scans, absorb them all into the coef buffer */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3452 if (cinfo.inputctl.has_multiple_scans) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3453 //#ifdef D_MULTISCAN_FILES_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3454 for (;;) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3455 int retcode; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3456 /* Call progress monitor hook if present */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3457 // if (cinfo.progress !is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3458 // (*cinfo.progress.progress_monitor) ((j_common_ptr) cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3459 /* Absorb some more input */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3460 retcode = consume_input (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3461 if (retcode is JPEG_SUSPENDED) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3462 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3463 if (retcode is JPEG_REACHED_EOI) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3464 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3465 /* Advance progress counter if appropriate */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3466 // if (cinfo.progress !is null && (retcode is JPEG_ROW_COMPLETED || retcode is JPEG_REACHED_SOS)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3467 // if (++cinfo.progress.pass_counter >= cinfo.progress.pass_limit) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3468 // /* jdmaster underestimated number of scans; ratchet up one scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3469 // cinfo.progress.pass_limit += cast(long) cinfo.total_iMCU_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3470 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3471 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3472 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3473 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3474 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3475 //#endif /* D_MULTISCAN_FILES_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3476 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3477 cinfo.output_scan_number = cinfo.input_scan_number; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3478 } else if (cinfo.global_state !is DSTATE_PRESCAN) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3479 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3480 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3481 /* Perform any dummy output passes, and set up for the final pass */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3482 return output_pass_setup(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3483 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3484 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3485 static void prepare_for_output_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3486 jpeg_decomp_master master = cinfo.master; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3487 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3488 if (master.is_dummy_pass) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3489 //#ifdef QUANT_2PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3490 // /* Final pass of 2-pass quantization */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3491 // master.pub.is_dummy_pass = FALSE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3492 // (*cinfo.cquantize.start_pass) (cinfo, FALSE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3493 // (*cinfo.post.start_pass) (cinfo, JBUF_CRANK_DEST); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3494 // (*cinfo.main.start_pass) (cinfo, JBUF_CRANK_DEST); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3495 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3496 error(SWT.ERROR_NOT_IMPLEMENTED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3497 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3498 //#endif /* QUANT_2PASS_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3499 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3500 if (cinfo.quantize_colors && cinfo.colormap is null) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3501 /* Select new quantization method */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3502 if (cinfo.two_pass_quantize && cinfo.enable_2pass_quant) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3503 cinfo.cquantize = master.quantizer_2pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3504 master.is_dummy_pass = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3505 } else if (cinfo.enable_1pass_quant) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3506 cinfo.cquantize = master.quantizer_1pass; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3507 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3508 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3509 // ERREXIT(cinfo, JERR_MODE_CHANGE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3510 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3511 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3512 cinfo.idct.start_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3513 start_output_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3514 if (! cinfo.raw_data_out) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3515 if (! master.using_merged_upsample) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3516 cinfo.cconvert.start_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3517 cinfo.upsample.start_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3518 if (cinfo.quantize_colors) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3519 cinfo.cquantize.start_pass (cinfo, master.is_dummy_pass); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3520 cinfo.post.start_pass (cinfo, (master.is_dummy_pass ? JBUF_SAVE_AND_PASS : JBUF_PASS_THRU)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3521 cinfo.main.start_pass (cinfo, JBUF_PASS_THRU); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3522 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3523 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3524 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3525 // /* Set up progress monitor's pass info if present */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3526 // if (cinfo.progress !is NULL) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3527 // cinfo.progress.completed_passes = master.pass_number; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3528 // cinfo.progress.total_passes = master.pass_number + |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3529 // (master.pub.is_dummy_pass ? 2 : 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3530 // /* In buffered-image mode, we assume one more output pass if EOI not |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3531 // * yet reached, but no more passes if EOI has been reached. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3532 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3533 // if (cinfo.buffered_image && ! cinfo.inputctl.eoi_reached) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3534 // cinfo.progress.total_passes += (cinfo.enable_2pass_quant ? 2 : 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3535 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3536 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3537 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3538 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3539 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3540 static bool jpeg_resync_to_restart (jpeg_decompress_struct cinfo, int desired) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3541 int marker = cinfo.unread_marker; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3542 int action = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3543 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3544 /* Always put up a warning. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3545 // WARNMS2(cinfo, JWRN_MUST_RESYNC, marker, desired); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3546 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3547 /* Outer loop handles repeated decision after scanning forward. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3548 for (;;) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3549 if (marker < M_SOF0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3550 action = 2; /* invalid marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3551 else if (marker < M_RST0 || marker > M_RST7) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3552 action = 3; /* valid non-restart marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3553 else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3554 if (marker is (M_RST0 + ((desired+1) & 7)) || marker is ( M_RST0 + ((desired+2) & 7))) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3555 action = 3; /* one of the next two expected restarts */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3556 else if (marker is (M_RST0 + ((desired-1) & 7)) || marker is ( M_RST0 + ((desired-2) & 7))) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3557 action = 2; /* a prior restart, so advance */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3558 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3559 action = 1; /* desired restart or too far away */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3560 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3561 // TRACEMS2(cinfo, 4, JTRC_RECOVERY_ACTION, marker, action); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3562 switch (action) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3563 case 1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3564 /* Discard marker and let entropy decoder resume processing. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3565 cinfo.unread_marker = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3566 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3567 case 2: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3568 /* Scan to the next marker, and repeat the decision loop. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3569 if (! next_marker(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3570 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3571 marker = cinfo.unread_marker; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3572 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3573 case 3: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3574 /* Return without advancing past this marker. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3575 /* Entropy decoder will be forced to process an empty segment. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3576 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3577 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3578 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3579 } /* end loop */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3580 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3581 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3582 static bool read_restart_marker (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3583 /* Obtain a marker unless we already did. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3584 /* Note that next_marker will complain if it skips any data. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3585 if (cinfo.unread_marker is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3586 if (! next_marker(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3587 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3588 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3589 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3590 if (cinfo.unread_marker is (M_RST0 + cinfo.marker.next_restart_num)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3591 /* Normal case --- swallow the marker and let entropy decoder continue */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3592 // TRACEMS1(cinfo, 3, JTRC_RST, cinfo.marker.next_restart_num); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3593 cinfo.unread_marker = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3594 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3595 /* Uh-oh, the restart markers have been messed up. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3596 /* Let the data source manager determine how to resync. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3597 if (! jpeg_resync_to_restart (cinfo, cinfo.marker.next_restart_num)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3598 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3599 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3600 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3601 /* Update next-restart state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3602 cinfo.marker.next_restart_num = (cinfo.marker.next_restart_num + 1) & 7; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3603 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3604 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3605 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3606 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3607 static bool jpeg_fill_bit_buffer (bitread_working_state state, int get_buffer, int bits_left, int nbits) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3608 /* Load up the bit buffer to a depth of at least nbits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3609 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3610 /* Copy heavily used state fields into locals (hopefully registers) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3611 byte[] buffer = state.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3612 int bytes_in_buffer = state.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3613 int bytes_offset = state.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3614 jpeg_decompress_struct cinfo = state.cinfo; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3615 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3616 /* Attempt to load at least MIN_GET_BITS bits into get_buffer. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3617 /* (It is assumed that no request will be for more than that many bits.) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3618 /* We fail to do so only if we hit a marker or are forced to suspend. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3619 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3620 if (cinfo.unread_marker is 0) { /* cannot advance past a marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3621 while (bits_left < MIN_GET_BITS) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3622 int c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3623 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3624 /* Attempt to read a byte */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3625 if (bytes_offset is bytes_in_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3626 if (! fill_input_buffer (cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3627 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3628 buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3629 bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3630 bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3631 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3632 c = buffer[bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3633 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3634 /* If it's 0xFF, check and discard stuffed zero byte */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3635 if (c is 0xFF) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3636 /* Loop here to discard any padding FF's on terminating marker, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3637 * so that we can save a valid unread_marker value. NOTE: we will |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3638 * accept multiple FF's followed by a 0 as meaning a single FF data |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3639 * byte. This data pattern is not valid according to the standard. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3640 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3641 do { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3642 if (bytes_offset is bytes_in_buffer) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3643 if (! fill_input_buffer (cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3644 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3645 buffer = cinfo.buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3646 bytes_in_buffer = cinfo.bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3647 bytes_offset = cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3648 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3649 c = buffer[bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3650 } while (c is 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3651 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3652 if (c is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3653 /* Found FF/00, which represents an FF data byte */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3654 c = 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3655 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3656 /* Oops, it's actually a marker indicating end of compressed data. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3657 * Save the marker code for later use. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3658 * Fine point: it might appear that we should save the marker into |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3659 * bitread working state, not straight into permanent state. But |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3660 * once we have hit a marker, we cannot need to suspend within the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3661 * current MCU, because we will read no more bytes from the data |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3662 * source. So it is OK to update permanent state right away. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3663 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3664 cinfo.unread_marker = c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3665 /* See if we need to insert some fake zero bits. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3666 // goto no_more_bytes; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3667 if (nbits > bits_left) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3668 /* Uh-oh. Report corrupted data to user and stuff zeroes into |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3669 * the data stream, so that we can produce some kind of image. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3670 * We use a nonvolatile flag to ensure that only one warning message |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3671 * appears per data segment. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3672 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3673 if (! cinfo.entropy.insufficient_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3674 // WARNMS(cinfo, JWRN_HIT_MARKER); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3675 cinfo.entropy.insufficient_data = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3676 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3677 /* Fill the buffer with zero bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3678 get_buffer <<= MIN_GET_BITS - bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3679 bits_left = MIN_GET_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3680 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3681 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3682 /* Unload the local registers */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3683 state.buffer = buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3684 state.bytes_in_buffer = bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3685 state.bytes_offset = bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3686 state.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3687 state.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3688 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3689 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3690 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3691 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3692 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3693 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3694 /* OK, load c into get_buffer */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3695 get_buffer = (get_buffer << 8) | c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3696 bits_left += 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3697 } /* end while */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3698 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3699 // no_more_bytes: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3700 /* We get here if we've read the marker that terminates the compressed |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3701 * data segment. There should be enough bits in the buffer register |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3702 * to satisfy the request; if so, no problem. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3703 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3704 if (nbits > bits_left) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3705 /* Uh-oh. Report corrupted data to user and stuff zeroes into |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3706 * the data stream, so that we can produce some kind of image. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3707 * We use a nonvolatile flag to ensure that only one warning message |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3708 * appears per data segment. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3709 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3710 if (! cinfo.entropy.insufficient_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3711 // WARNMS(cinfo, JWRN_HIT_MARKER); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3712 cinfo.entropy.insufficient_data = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3713 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3714 /* Fill the buffer with zero bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3715 get_buffer <<= MIN_GET_BITS - bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3716 bits_left = MIN_GET_BITS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3717 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3718 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3719 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3720 /* Unload the local registers */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3721 state.buffer = buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3722 state.bytes_in_buffer = bytes_in_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3723 state.bytes_offset = bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3724 state.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3725 state.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3726 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3727 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3728 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3729 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3730 static int jpeg_huff_decode (bitread_working_state state, int get_buffer, int bits_left, d_derived_tbl htbl, int min_bits) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3731 int l = min_bits; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3732 int code; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3733 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3734 /* HUFF_DECODE has determined that the code is at least min_bits */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3735 /* bits long, so fetch that many bits in one swoop. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3736 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3737 // CHECK_BIT_BUFFER(*state, l, return -1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3738 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3739 if (bits_left < (l)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3740 if (! jpeg_fill_bit_buffer(state,get_buffer,bits_left,l)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3741 return -1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3742 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3743 get_buffer = state.get_buffer; bits_left = state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3744 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3745 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3746 // code = GET_BITS(l); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3747 code = (( (get_buffer >> (bits_left -= (l)))) & ((1<<(l))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3748 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3749 /* Collect the rest of the Huffman code one bit at a time. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3750 /* This is per Figure F.16 in the JPEG spec. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3751 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3752 while (code > htbl.maxcode[l]) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3753 code <<= 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3754 // CHECK_BIT_BUFFER(*state, 1, return -1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3755 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3756 if (bits_left < (1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3757 if (! jpeg_fill_bit_buffer(state,get_buffer,bits_left,1)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3758 return -1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3759 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3760 get_buffer = state.get_buffer; bits_left = state.bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3761 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3762 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3763 // code |= GET_BITS(1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3764 code |= (( (get_buffer >> (bits_left -= (1)))) & ((1<<(1))-1)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3765 l++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3766 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3767 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3768 /* Unload the local registers */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3769 state.get_buffer = get_buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3770 state.bits_left = bits_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3771 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3772 /* With garbage input we may reach the sentinel value l = 17. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3773 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3774 if (l > 16) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3775 // WARNMS(state.cinfo, JWRN_HUFF_BAD_CODE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3776 return 0; /* fake a zero as the safest result */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3777 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3778 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3779 return htbl.pub.huffval[ (code + htbl.valoffset[l]) ] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3780 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3781 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3782 static int decompress_onepass (jpeg_decompress_struct cinfo, byte[][][] output_buf, int[] output_buf_offset) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3783 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3784 int MCU_col_num; /* index of current MCU within row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3785 int last_MCU_col = cinfo.MCUs_per_row - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3786 int last_iMCU_row = cinfo.total_iMCU_rows - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3787 int blkn, ci, xindex, yindex, yoffset, useful_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3788 byte[][] output_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3789 int start_col, output_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3790 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3791 // inverse_DCT_method_ptr inverse_DCT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3792 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3793 /* Loop to process as much as one whole iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3794 for (yoffset = coef.MCU_vert_offset; yoffset < coef.MCU_rows_per_iMCU_row; yoffset++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3795 for (MCU_col_num = coef.MCU_ctr; MCU_col_num <= last_MCU_col; MCU_col_num++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3796 /* Try to fetch an MCU. Entropy decoder expects buffer to be zeroed. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3797 for (int i = 0; i < cinfo.blocks_in_MCU; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3798 short[] blk = coef.MCU_buffer[i]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3799 for (int j = 0; j < blk.length; j++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3800 blk[j] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3801 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3802 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3803 if (! cinfo.entropy.decode_mcu (cinfo, coef.MCU_buffer)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3804 /* Suspension forced; update state counters and exit */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3805 coef.MCU_vert_offset = yoffset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3806 coef.MCU_ctr = MCU_col_num; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3807 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3808 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3809 /* Determine where data should go in output_buf and do the IDCT thing. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3810 * We skip dummy blocks at the right and bottom edges (but blkn gets |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3811 * incremented past them!). Note the inner loop relies on having |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3812 * allocated the MCU_buffer[] blocks sequentially. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3813 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3814 blkn = 0; /* index of current DCT block within MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3815 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3816 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3817 /* Don't bother to IDCT an uninteresting component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3818 if (! compptr.component_needed) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3819 blkn += compptr.MCU_blocks; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3820 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3821 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3822 // inverse_DCT = cinfo.idct.inverse_DCT[compptr.component_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3823 useful_width = (MCU_col_num < last_MCU_col) ? compptr.MCU_width : compptr.last_col_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3824 output_ptr = output_buf[compptr.component_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3825 int output_ptr_offset = output_buf_offset[compptr.component_index] + yoffset * compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3826 start_col = MCU_col_num * compptr.MCU_sample_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3827 for (yindex = 0; yindex < compptr.MCU_height; yindex++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3828 if (cinfo.input_iMCU_row < last_iMCU_row || yoffset+yindex < compptr.last_row_height) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3829 output_col = start_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3830 for (xindex = 0; xindex < useful_width; xindex++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3831 jpeg_idct_islow(cinfo, compptr, coef.MCU_buffer[blkn+xindex], output_ptr, output_ptr_offset, output_col); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3832 output_col += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3833 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3834 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3835 blkn += compptr.MCU_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3836 output_ptr_offset += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3837 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3838 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3839 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3840 /* Completed an MCU row, but perhaps not an iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3841 coef.MCU_ctr = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3842 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3843 /* Completed the iMCU row, advance counters for next one */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3844 cinfo.output_iMCU_row++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3845 if (++(cinfo.input_iMCU_row) < cinfo.total_iMCU_rows) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3846 coef.start_iMCU_row(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3847 return JPEG_ROW_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3848 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3849 /* Completed the scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3850 finish_input_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3851 return JPEG_SCAN_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3852 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3853 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3854 static int decompress_smooth_data (jpeg_decompress_struct cinfo, byte[][][] output_buf, int[] output_buf_offset) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3855 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3856 int last_iMCU_row = cinfo.total_iMCU_rows - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3857 int block_num, last_block_column; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3858 int ci, block_row, block_rows, access_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3859 short[][][] buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3860 short[][] buffer_ptr, prev_block_row, next_block_row; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3861 byte[][] output_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3862 int output_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3863 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3864 // inverse_DCT_method_ptr inverse_DCT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3865 bool first_row, last_row; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3866 short[] workspace = coef.workspace; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3867 if (workspace is null) workspace = coef.workspace = new short[DCTSIZE2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3868 int[] coef_bits; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3869 JQUANT_TBL quanttbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3870 int Q00,Q01,Q02,Q10,Q11,Q20, num; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3871 int DC1,DC2,DC3,DC4,DC5,DC6,DC7,DC8,DC9; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3872 int Al, pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3873 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3874 /* Force some input to be done if we are getting ahead of the input. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3875 while (cinfo.input_scan_number <= cinfo.output_scan_number && ! cinfo.inputctl.eoi_reached) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3876 if (cinfo.input_scan_number is cinfo.output_scan_number) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3877 /* If input is working on current scan, we ordinarily want it to |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3878 * have completed the current row. But if input scan is DC, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3879 * we want it to keep one row ahead so that next block row's DC |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3880 * values are up to date. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3881 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3882 int delta = (cinfo.Ss is 0) ? 1 : 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3883 if (cinfo.input_iMCU_row > cinfo.output_iMCU_row+delta) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3884 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3885 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3886 if (consume_input(cinfo) is JPEG_SUSPENDED) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3887 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3888 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3889 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3890 /* OK, output from the virtual arrays. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3891 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3892 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3893 /* Don't bother to IDCT an uninteresting component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3894 if (! compptr.component_needed) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3895 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3896 /* Count non-dummy DCT block rows in this iMCU row. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3897 if (cinfo.output_iMCU_row < last_iMCU_row) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3898 block_rows = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3899 access_rows = block_rows * 2; /* this and next iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3900 last_row = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3901 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3902 /* NB: can't use last_row_height here; it is input-side-dependent! */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3903 block_rows = (compptr.height_in_blocks % compptr.v_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3904 if (block_rows is 0) block_rows = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3905 access_rows = block_rows; /* this iMCU row only */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3906 last_row = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3907 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3908 /* Align the virtual buffer for this component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3909 int buffer_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3910 if (cinfo.output_iMCU_row > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3911 access_rows += compptr.v_samp_factor; /* prior iMCU row too */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3912 buffer = coef.whole_image[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3913 buffer_offset = (cinfo.output_iMCU_row - 1) * compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3914 buffer_offset += compptr.v_samp_factor; /* point to current iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3915 first_row = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3916 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3917 buffer = coef.whole_image[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3918 buffer_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3919 first_row = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3920 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3921 /* Fetch component-dependent info */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3922 coef_bits = coef.coef_bits_latch; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3923 int coef_offset = (ci * SAVED_COEFS); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3924 quanttbl = compptr.quant_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3925 Q00 = quanttbl.quantval[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3926 Q01 = quanttbl.quantval[Q01_POS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3927 Q10 = quanttbl.quantval[Q10_POS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3928 Q20 = quanttbl.quantval[Q20_POS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3929 Q11 = quanttbl.quantval[Q11_POS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3930 Q02 = quanttbl.quantval[Q02_POS]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3931 // inverse_DCT = cinfo.idct.inverse_DCT[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3932 output_ptr = output_buf[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3933 int output_ptr_offset = output_buf_offset[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3934 /* Loop over all DCT blocks to be processed. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3935 for (block_row = 0; block_row < block_rows; block_row++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3936 buffer_ptr = buffer[block_row+buffer_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3937 int buffer_ptr_offset = 0, prev_block_row_offset = 0, next_block_row_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3938 if (first_row && block_row is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3939 prev_block_row = buffer_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3940 prev_block_row_offset = buffer_ptr_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3941 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3942 prev_block_row = buffer[block_row-1+buffer_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3943 prev_block_row_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3944 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3945 if (last_row && block_row is block_rows-1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3946 next_block_row = buffer_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3947 next_block_row_offset = buffer_ptr_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3948 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3949 next_block_row = buffer[block_row+1+buffer_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3950 next_block_row_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3951 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3952 /* We fetch the surrounding DC values using a sliding-register approach. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3953 * Initialize all nine here so as to do the right thing on narrow pics. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3954 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3955 DC1 = DC2 = DC3 = prev_block_row[0+prev_block_row_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3956 DC4 = DC5 = DC6 = buffer_ptr[0+buffer_ptr_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3957 DC7 = DC8 = DC9 = next_block_row[0+next_block_row_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3958 output_col = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3959 last_block_column = compptr.width_in_blocks - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3960 for (block_num = 0; block_num <= last_block_column; block_num++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3961 /* Fetch current DCT block into workspace so we can modify it. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3962 // jcopy_block_row(buffer_ptr, workspace, 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3963 System.arraycopy(buffer_ptr[buffer_ptr_offset], 0, workspace, 0, workspace.length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3964 /* Update DC values */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3965 if (block_num < last_block_column) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3966 DC3 = prev_block_row[1+prev_block_row_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3967 DC6 = buffer_ptr[1+buffer_ptr_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3968 DC9 = next_block_row[1+next_block_row_offset][0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3969 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3970 /* Compute coefficient estimates per K.8. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3971 * An estimate is applied only if coefficient is still zero, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3972 * and is not known to be fully accurate. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3973 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3974 /* AC01 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3975 if ((Al=coef_bits[1+coef_offset]) !is 0 && workspace[1] is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3976 num = 36 * Q00 * (DC4 - DC6); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3977 if (num >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3978 pred = (((Q01<<7) + num) / (Q01<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3979 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3980 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3981 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3982 pred = (((Q01<<7) - num) / (Q01<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3983 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3984 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3985 pred = -pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3986 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3987 workspace[1] = cast(short) pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3988 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3989 /* AC10 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3990 if ((Al=coef_bits[2+coef_offset]) !is 0 && workspace[8] is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3991 num = 36 * Q00 * (DC2 - DC8); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3992 if (num >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3993 pred = (((Q10<<7) + num) / (Q10<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3994 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3995 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3996 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3997 pred = (((Q10<<7) - num) / (Q10<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3998 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
3999 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4000 pred = -pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4001 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4002 workspace[8] = cast(short) pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4003 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4004 /* AC20 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4005 if ((Al=coef_bits[3+coef_offset]) !is 0 && workspace[16] is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4006 num = 9 * Q00 * (DC2 + DC8 - 2*DC5); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4007 if (num >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4008 pred = (((Q20<<7) + num) / (Q20<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4009 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4010 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4011 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4012 pred = (((Q20<<7) - num) / (Q20<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4013 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4014 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4015 pred = -pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4016 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4017 workspace[16] = cast(short) pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4018 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4019 /* AC11 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4020 if ((Al=coef_bits[4+coef_offset]) !is 0 && workspace[9] is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4021 num = 5 * Q00 * (DC1 - DC3 - DC7 + DC9); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4022 if (num >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4023 pred = (((Q11<<7) + num) / (Q11<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4024 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4025 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4026 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4027 pred = (((Q11<<7) - num) / (Q11<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4028 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4029 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4030 pred = -pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4031 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4032 workspace[9] = cast(short) pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4033 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4034 /* AC02 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4035 if ((Al=coef_bits[5+coef_offset]) !is 0 && workspace[2] is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4036 num = 9 * Q00 * (DC4 + DC6 - 2*DC5); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4037 if (num >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4038 pred = (((Q02<<7) + num) / (Q02<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4039 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4040 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4041 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4042 pred = (((Q02<<7) - num) / (Q02<<8)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4043 if (Al > 0 && pred >= (1<<Al)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4044 pred = (1<<Al)-1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4045 pred = -pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4046 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4047 workspace[2] = cast(short) pred; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4048 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4049 /* OK, do the IDCT */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4050 jpeg_idct_islow(cinfo, compptr, workspace, output_ptr, output_ptr_offset, output_col); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4051 /* Advance for next column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4052 DC1 = DC2; DC2 = DC3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4053 DC4 = DC5; DC5 = DC6; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4054 DC7 = DC8; DC8 = DC9; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4055 buffer_ptr_offset++; prev_block_row_offset++; next_block_row_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4056 output_col += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4057 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4058 output_ptr_offset += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4059 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4060 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4061 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4062 if (++(cinfo.output_iMCU_row) < cinfo.total_iMCU_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4063 return JPEG_ROW_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4064 return JPEG_SCAN_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4065 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4066 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4067 static int decompress_data (jpeg_decompress_struct cinfo, byte[][][] output_buf, int[] output_buf_offset) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4068 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4069 int last_iMCU_row = cinfo.total_iMCU_rows - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4070 int block_num; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4071 int ci, block_row, block_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4072 short[][][] buffer; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4073 short[][] buffer_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4074 byte[][] output_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4075 int output_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4076 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4077 // inverse_DCT_method_ptr inverse_DCT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4078 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4079 /* Force some input to be done if we are getting ahead of the input. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4080 while (cinfo.input_scan_number < cinfo.output_scan_number || |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4081 (cinfo.input_scan_number is cinfo.output_scan_number && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4082 cinfo.input_iMCU_row <= cinfo.output_iMCU_row)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4083 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4084 if (consume_input(cinfo) is JPEG_SUSPENDED) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4085 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4086 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4087 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4088 /* OK, output from the virtual arrays. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4089 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4090 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4091 /* Don't bother to IDCT an uninteresting component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4092 if (! compptr.component_needed) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4093 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4094 /* Align the virtual buffer for this component. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4095 buffer = coef.whole_image[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4096 int buffer_offset = cinfo.output_iMCU_row * compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4097 /* Count non-dummy DCT block rows in this iMCU row. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4098 if (cinfo.output_iMCU_row < last_iMCU_row) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4099 block_rows = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4100 else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4101 /* NB: can't use last_row_height here; it is input-side-dependent! */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4102 block_rows = (compptr.height_in_blocks % compptr.v_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4103 if (block_rows is 0) block_rows = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4104 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4105 // inverse_DCT = cinfo.idct.inverse_DCT[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4106 output_ptr = output_buf[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4107 int output_ptr_offset = output_buf_offset[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4108 /* Loop over all DCT blocks to be processed. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4109 for (block_row = 0; block_row < block_rows; block_row++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4110 buffer_ptr = buffer[block_row+buffer_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4111 int buffer_ptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4112 output_col = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4113 for (block_num = 0; block_num < compptr.width_in_blocks; block_num++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4114 jpeg_idct_islow(cinfo, compptr, buffer_ptr[buffer_ptr_offset], output_ptr, output_ptr_offset, output_col); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4115 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4116 buffer_ptr_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4117 output_col += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4118 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4119 output_ptr_offset += compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4120 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4121 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4122 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4123 if (++(cinfo.output_iMCU_row) < cinfo.total_iMCU_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4124 return JPEG_ROW_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4125 return JPEG_SCAN_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4126 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4127 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4128 static void post_process_data (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4129 byte[][][] input_buf, int[] input_buf_offset, int[] in_row_group_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4130 int in_row_groups_avail, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4131 byte[][] output_buf, int[] out_row_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4132 int out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4133 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4134 upsample(cinfo, input_buf, input_buf_offset, in_row_group_ctr, in_row_groups_avail, output_buf, out_row_ctr, out_rows_avail); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4135 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4136 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4137 static void set_bottom_pointers (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4138 /* Change the pointer lists to duplicate the last sample row at the bottom |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4139 * of the image. whichptr indicates which xbuffer holds the final iMCU row. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4140 * Also sets rowgroups_avail to indicate number of nondummy row groups in row. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4141 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4142 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4143 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4144 int ci, i, rgroup, iMCUheight, rows_left; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4145 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4146 byte[][] xbuf; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4147 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4148 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4149 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4150 /* Count sample rows in one iMCU row and in one row group */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4151 iMCUheight = compptr.v_samp_factor * compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4152 rgroup = iMCUheight / cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4153 /* Count nondummy sample rows remaining for this component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4154 rows_left = (compptr.downsampled_height % iMCUheight); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4155 if (rows_left is 0) rows_left = iMCUheight; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4156 /* Count nondummy row groups. Should get same answer for each component, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4157 * so we need only do it once. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4158 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4159 if (ci is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4160 main.rowgroups_avail = ((rows_left-1) / rgroup + 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4161 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4162 /* Duplicate the last real sample row rgroup*2 times; this pads out the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4163 * last partial rowgroup and ensures at least one full rowgroup of context. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4164 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4165 xbuf = main.xbuffer[main.whichptr][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4166 int xbuf_offset = main.xbuffer_offset[main.whichptr][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4167 for (i = 0; i < rgroup * 2; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4168 xbuf[rows_left + i + xbuf_offset] = xbuf[rows_left-1 + xbuf_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4169 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4170 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4171 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4172 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4173 static void set_wraparound_pointers (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4174 /* Set up the "wraparound" pointers at top and bottom of the pointer lists. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4175 * This changes the pointer list state from top-of-image to the normal state. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4176 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4177 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4178 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4179 int ci, i, rgroup; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4180 int M = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4181 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4182 byte[][] xbuf0, xbuf1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4183 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4184 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4185 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4186 rgroup = (compptr.v_samp_factor * compptr.DCT_scaled_size) / cinfo.min_DCT_scaled_size; /* height of a row group of component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4187 xbuf0 = main.xbuffer[0][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4188 int xbuf0_offset = main.xbuffer_offset[0][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4189 xbuf1 = main.xbuffer[1][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4190 int xbuf1_offset = main.xbuffer_offset[1][ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4191 for (i = 0; i < rgroup; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4192 xbuf0[i - rgroup + xbuf0_offset] = xbuf0[rgroup*(M+1) + i + xbuf0_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4193 xbuf1[i - rgroup + xbuf1_offset] = xbuf1[rgroup*(M+1) + i + xbuf1_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4194 xbuf0[rgroup*(M+2) + i + xbuf0_offset] = xbuf0[i + xbuf0_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4195 xbuf1[rgroup*(M+2) + i + xbuf1_offset] = xbuf1[i + xbuf1_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4196 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4197 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4198 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4199 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4200 static void process_data_crank_post (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4201 byte[][] output_buf, int[] out_row_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4202 int out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4203 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4204 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4205 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4206 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4207 static void process_data_context_main (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4208 byte[][] output_buf, int[] out_row_ctr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4209 int out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4210 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4211 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4212 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4213 /* Read input data if we haven't filled the main buffer yet */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4214 if (! main.buffer_full) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4215 int result; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4216 switch (cinfo.coef.decompress_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4217 case DECOMPRESS_DATA: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4218 result = decompress_data(cinfo, main.xbuffer[main.whichptr], main.xbuffer_offset[main.whichptr]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4219 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4220 case DECOMPRESS_SMOOTH_DATA: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4221 result = decompress_smooth_data(cinfo, main.xbuffer[main.whichptr], main.xbuffer_offset[main.whichptr]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4222 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4223 case DECOMPRESS_ONEPASS: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4224 result = decompress_onepass(cinfo, main.xbuffer[main.whichptr], main.xbuffer_offset[main.whichptr]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4225 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4226 default: result = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4227 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4228 if (result is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4229 return; /* suspension forced, can do nothing more */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4230 main.buffer_full = true; /* OK, we have an iMCU row to work with */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4231 main.iMCU_row_ctr++; /* count rows received */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4232 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4233 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4234 /* Postprocessor typically will not swallow all the input data it is handed |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4235 * in one call (due to filling the output buffer first). Must be prepared |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4236 * to exit and restart. This switch lets us keep track of how far we got. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4237 * Note that each case falls through to the next on successful completion. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4238 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4239 switch (main.context_state) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4240 case CTX_POSTPONED_ROW: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4241 /* Call postprocessor using previously set pointers for postponed row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4242 post_process_data (cinfo, main.xbuffer[main.whichptr], main.xbuffer_offset[main.whichptr], main.rowgroup_ctr, main.rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4243 if (main.rowgroup_ctr[0] < main.rowgroups_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4244 return; /* Need to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4245 main.context_state = CTX_PREPARE_FOR_IMCU; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4246 if (out_row_ctr[0] >= out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4247 return; /* Postprocessor exactly filled output buf */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4248 /*FALLTHROUGH*/ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4249 case CTX_PREPARE_FOR_IMCU: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4250 /* Prepare to process first M-1 row groups of this iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4251 main.rowgroup_ctr[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4252 main.rowgroups_avail = (cinfo.min_DCT_scaled_size - 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4253 /* Check for bottom of image: if so, tweak pointers to "duplicate" |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4254 * the last sample row, and adjust rowgroups_avail to ignore padding rows. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4255 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4256 if (main.iMCU_row_ctr is cinfo.total_iMCU_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4257 set_bottom_pointers(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4258 main.context_state = CTX_PROCESS_IMCU; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4259 /*FALLTHROUGH*/ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4260 case CTX_PROCESS_IMCU: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4261 /* Call postprocessor using previously set pointers */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4262 post_process_data (cinfo, main.xbuffer[main.whichptr], main.xbuffer_offset[main.whichptr], main.rowgroup_ctr, main.rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4263 if (main.rowgroup_ctr[0] < main.rowgroups_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4264 return; /* Need to suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4265 /* After the first iMCU, change wraparound pointers to normal state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4266 if (main.iMCU_row_ctr is 1) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4267 set_wraparound_pointers(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4268 /* Prepare to load new iMCU row using other xbuffer list */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4269 main.whichptr ^= 1; /* 0=>1 or 1=>0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4270 main.buffer_full = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4271 /* Still need to process last row group of this iMCU row, */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4272 /* which is saved at index M+1 of the other xbuffer */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4273 main.rowgroup_ctr[0] = (cinfo.min_DCT_scaled_size + 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4274 main.rowgroups_avail = (cinfo.min_DCT_scaled_size + 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4275 main.context_state = CTX_POSTPONED_ROW; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4276 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4277 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4278 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4279 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4280 static void process_data_simple_main (jpeg_decompress_struct cinfo, byte[][] output_buf, int[] out_row_ctr, int out_rows_avail) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4281 jpeg_d_main_controller main = cinfo.main; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4282 int rowgroups_avail; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4283 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4284 /* Read input data if we haven't filled the main buffer yet */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4285 if (! main.buffer_full) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4286 int result; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4287 switch (cinfo.coef.decompress_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4288 case DECOMPRESS_DATA: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4289 result = decompress_data(cinfo, main.buffer, main.buffer_offset); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4290 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4291 case DECOMPRESS_SMOOTH_DATA: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4292 result = decompress_smooth_data(cinfo, main.buffer, main.buffer_offset); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4293 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4294 case DECOMPRESS_ONEPASS: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4295 result = decompress_onepass(cinfo, main.buffer, main.buffer_offset); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4296 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4297 default: result = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4298 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4299 if (result is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4300 return; /* suspension forced, can do nothing more */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4301 main.buffer_full = true; /* OK, we have an iMCU row to work with */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4302 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4303 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4304 /* There are always min_DCT_scaled_size row groups in an iMCU row. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4305 rowgroups_avail = cinfo.min_DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4306 /* Note: at the bottom of the image, we may pass extra garbage row groups |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4307 * to the postprocessor. The postprocessor has to check for bottom |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4308 * of image anyway (at row resolution), so no point in us doing it too. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4309 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4310 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4311 /* Feed the postprocessor */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4312 post_process_data (cinfo, main.buffer, main.buffer_offset, main.rowgroup_ctr, rowgroups_avail, output_buf, out_row_ctr, out_rows_avail); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4313 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4314 /* Has postprocessor consumed all the data yet? If so, mark buffer empty */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4315 if (main.rowgroup_ctr[0] >= rowgroups_avail) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4316 main.buffer_full = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4317 main.rowgroup_ctr[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4318 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4319 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4320 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4321 static int jpeg_read_scanlines (jpeg_decompress_struct cinfo, byte[][] scanlines, int max_lines) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4322 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4323 if (cinfo.global_state !is DSTATE_SCANNING) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4324 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4325 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4326 if (cinfo.output_scanline >= cinfo.output_height) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4327 // WARNMS(cinfo, JWRN_TOO_MUCH_DATA); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4328 return 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4329 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4330 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4331 /* Call progress monitor hook if present */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4332 // if (cinfo.progress !is NULL) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4333 // cinfo.progress.pass_counter = cast(long) cinfo.output_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4334 // cinfo.progress.pass_limit = cast(long) cinfo.output_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4335 // (*cinfo.progress.progress_monitor) ((j_common_ptr) cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4336 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4337 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4338 /* Process some data */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4339 cinfo.row_ctr[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4340 switch (cinfo.main.process_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4341 case PROCESS_DATA_SIMPLE_MAIN: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4342 process_data_simple_main (cinfo, scanlines, cinfo.row_ctr, max_lines); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4343 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4344 case PROCESS_DATA_CONTEXT_MAIN: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4345 process_data_context_main (cinfo, scanlines, cinfo.row_ctr, max_lines); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4346 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4347 case PROCESS_DATA_CRANK_POST: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4348 process_data_crank_post (cinfo, scanlines, cinfo.row_ctr, max_lines); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4349 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4350 default: error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4351 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4352 cinfo.output_scanline += cinfo.row_ctr[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4353 return cinfo.row_ctr[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4354 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4355 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4356 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4357 static bool output_pass_setup (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4358 if (cinfo.global_state !is DSTATE_PRESCAN) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4359 /* First call: do pass setup */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4360 prepare_for_output_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4361 cinfo.output_scanline = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4362 cinfo.global_state = DSTATE_PRESCAN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4363 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4364 /* Loop over any required dummy passes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4365 while (cinfo.master.is_dummy_pass) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4366 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4367 //#ifdef QUANT_2PASS_SUPPORTED |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4368 // /* Crank through the dummy pass */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4369 // while (cinfo.output_scanline < cinfo.output_height) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4370 // JDIMENSION last_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4371 // /* Call progress monitor hook if present */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4372 // if (cinfo.progress !is NULL) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4373 // cinfo.progress.pass_counter = cast(long) cinfo.output_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4374 // cinfo.progress.pass_limit = cast(long) cinfo.output_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4375 // (*cinfo.progress.progress_monitor) ((j_common_ptr) cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4376 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4377 // /* Process some data */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4378 // last_scanline = cinfo.output_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4379 // (*cinfo.main.process_data) (cinfo, (JSAMPARRAY) NULL, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4380 // &cinfo.output_scanline, (JDIMENSION) 0); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4381 // if (cinfo.output_scanline is last_scanline) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4382 // return FALSE; /* No progress made, must suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4383 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4384 // /* Finish up dummy pass, and set up for another one */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4385 // (*cinfo.master.finish_output_pass) (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4386 // (*cinfo.master.prepare_for_output_pass) (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4387 // cinfo.output_scanline = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4388 //#else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4389 // ERREXIT(cinfo, JERR_NOT_COMPILED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4390 //#endif /* QUANT_2PASS_SUPPORTED */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4391 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4392 /* Ready for application to drive output pass through |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4393 * jpeg_read_scanlines or jpeg_read_raw_data. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4394 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4395 cinfo.global_state = cinfo.raw_data_out ? DSTATE_RAW_OK : DSTATE_SCANNING; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4396 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4397 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4398 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4399 static bool get_dht (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4400 /* Process a DHT marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4401 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4402 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4403 byte[] bits = new byte[17]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4404 byte[] huffval = new byte[256]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4405 int i, index, count; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4406 JHUFF_TBL htblptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4407 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4408 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4409 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4410 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4411 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4412 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4413 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4414 while (length > 16) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4415 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4416 index = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4417 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4418 // TRACEMS1(cinfo, 1, JTRC_DHT, index); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4419 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4420 bits[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4421 count = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4422 for (i = 1; i <= 16; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4423 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4424 bits[i] = cinfo.buffer[cinfo.bytes_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4425 count += bits[i] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4426 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4427 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4428 length -= 1 + 16; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4429 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4430 // TRACEMS8(cinfo, 2, JTRC_HUFFBITS, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4431 // bits[1], bits[2], bits[3], bits[4], |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4432 // bits[5], bits[6], bits[7], bits[8]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4433 // TRACEMS8(cinfo, 2, JTRC_HUFFBITS, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4434 // bits[9], bits[10], bits[11], bits[12], |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4435 // bits[13], bits[14], bits[15], bits[16]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4436 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4437 /* Here we just do minimal validation of the counts to avoid walking |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4438 * off the end of our table space. jdhuff.c will check more carefully. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4439 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4440 if (count > 256 || (count) > length) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4441 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4442 // ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4443 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4444 for (i = 0; i < count; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4445 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4446 huffval[i] = cinfo.buffer[cinfo.bytes_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4447 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4448 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4449 length -= count; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4450 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4451 if ((index & 0x10) !is 0) { /* AC table definition */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4452 index -= 0x10; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4453 htblptr = cinfo.ac_huff_tbl_ptrs[index] = new JHUFF_TBL(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4454 } else { /* DC table definition */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4455 htblptr = cinfo.dc_huff_tbl_ptrs[index] = new JHUFF_TBL(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4456 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4457 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4458 if (index < 0 || index >= NUM_HUFF_TBLS) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4459 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4460 // ERREXIT1(cinfo, JERR_DHT_INDEX, index); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4461 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4462 System.arraycopy(bits, 0, htblptr.bits, 0, bits.length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4463 System.arraycopy(huffval, 0, htblptr.huffval, 0, huffval.length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4464 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4465 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4466 if (length !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4467 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4468 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4469 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4470 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4471 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4472 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4473 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4474 static bool get_dqt (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4475 /* Process a DQT marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4476 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4477 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4478 int n, i, prec; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4479 int tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4480 JQUANT_TBL quant_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4481 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4482 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4483 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4484 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4485 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4486 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4487 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4488 while (length > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4489 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4490 n = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4491 prec = n >> 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4492 n &= 0x0F; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4493 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4494 // TRACEMS2(cinfo, 1, JTRC_DQT, n, prec); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4495 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4496 if (n >= NUM_QUANT_TBLS) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4497 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4498 // ERREXIT1(cinfo, JERR_DQT_INDEX, n); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4499 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4500 if (cinfo.quant_tbl_ptrs[n] is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4501 cinfo.quant_tbl_ptrs[n] = new JQUANT_TBL(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4502 quant_ptr = cinfo.quant_tbl_ptrs[n]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4503 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4504 for (i = 0; i < DCTSIZE2; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4505 if (prec !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4506 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4507 tmp = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4508 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4509 tmp |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4510 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4511 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4512 tmp = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4513 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4514 /* We convert the zigzag-order table to natural array order. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4515 quant_ptr.quantval[jpeg_natural_order[i]] = cast(short) tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4516 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4517 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4518 // if (cinfo.err.trace_level >= 2) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4519 // for (i = 0; i < DCTSIZE2; i += 8) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4520 // TRACEMS8(cinfo, 2, JTRC_QUANTVALS, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4521 // quant_ptr.quantval[i], quant_ptr.quantval[i+1], |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4522 // quant_ptr.quantval[i+2], quant_ptr.quantval[i+3], |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4523 // quant_ptr.quantval[i+4], quant_ptr.quantval[i+5], |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4524 // quant_ptr.quantval[i+6], quant_ptr.quantval[i+7]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4525 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4526 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4527 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4528 length -= (DCTSIZE2+1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4529 if (prec !is 0) length -= DCTSIZE2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4530 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4531 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4532 if (length !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4533 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4534 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4535 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4536 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4537 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4538 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4539 static bool get_dri (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4540 /* Process a DRI marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4541 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4542 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4543 int tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4544 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4545 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4546 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4547 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4548 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4549 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4550 if (length !is 4) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4551 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4552 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4553 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4554 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4555 tmp = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4556 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4557 tmp |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4558 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4559 // TRACEMS1(cinfo, 1, JTRC_DRI, tmp); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4560 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4561 cinfo.restart_interval = tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4562 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4563 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4564 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4565 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4566 static bool get_dac (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4567 /* Process a DAC marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4568 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4569 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4570 int index, val; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4571 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4572 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4573 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4574 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4575 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4576 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4577 while (length > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4578 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4579 index = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4580 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4581 val = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4582 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4583 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4584 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4585 // TRACEMS2(cinfo, 1, JTRC_DAC, index, val); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4586 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4587 if (index < 0 || index >= (2*NUM_ARITH_TBLS)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4588 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4589 // ERREXIT1(cinfo, JERR_DAC_INDEX, index); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4590 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4591 if (index >= NUM_ARITH_TBLS) { /* define AC table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4592 cinfo.arith_ac_K[index-NUM_ARITH_TBLS] = cast(byte) val; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4593 } else { /* define DC table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4594 cinfo.arith_dc_L[index] = cast(byte) (val & 0x0F); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4595 cinfo.arith_dc_U[index] = cast(byte) (val >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4596 if (cinfo.arith_dc_L[index] > cinfo.arith_dc_U[index]) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4597 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4598 // ERREXIT1(cinfo, JERR_DAC_VALUE, val); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4599 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4600 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4601 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4602 if (length !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4603 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4604 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4605 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4606 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4607 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4608 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4609 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4610 static bool get_sos (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4611 /* Process a SOS marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4612 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4613 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4614 int i, ci, n, c, cc; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4615 jpeg_component_info compptr = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4616 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4617 if (! cinfo.marker.saw_SOF) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4618 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4619 // ERREXIT(cinfo, JERR_SOS_NO_SOF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4620 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4621 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4622 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4623 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4624 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4625 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4626 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4627 n = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4628 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4629 // TRACEMS1(cinfo, 1, JTRC_SOS, n); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4630 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4631 if (length !is (n * 2 + 6) || n < 1 || n > MAX_COMPS_IN_SCAN) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4632 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4633 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4634 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4635 cinfo.comps_in_scan = n; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4636 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4637 /* Collect the component-spec parameters */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4638 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4639 for (i = 0; i < n; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4640 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4641 cc = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4642 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4643 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4644 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4645 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4646 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4647 if (cc is compptr.component_id) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4648 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4649 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4650 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4651 if (ci is cinfo.num_components) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4652 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4653 // ERREXIT1(cinfo, JERR_BAD_COMPONENT_ID, cc); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4654 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4655 cinfo.cur_comp_info[i] = compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4656 compptr.dc_tbl_no = (c >> 4) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4657 compptr.ac_tbl_no = (c ) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4658 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4659 // TRACEMS3(cinfo, 1, JTRC_SOS_COMPONENT, cc, compptr.dc_tbl_no, compptr.ac_tbl_no); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4660 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4661 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4662 /* Collect the additional scan parameters Ss, Se, Ah/Al. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4663 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4664 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4665 cinfo.Ss = c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4666 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4667 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4668 cinfo.Se = c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4669 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4670 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4671 cinfo.Ah = (c >> 4) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4672 cinfo.Al = (c ) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4673 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4674 // TRACEMS4(cinfo, 1, JTRC_SOS_PARAMS, cinfo.Ss, cinfo.Se, cinfo.Ah, cinfo.Al); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4675 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4676 /* Prepare to scan data & restart markers */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4677 cinfo.marker.next_restart_num = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4678 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4679 /* Count another SOS marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4680 cinfo.input_scan_number++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4681 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4682 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4683 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4684 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4685 static bool get_sof (jpeg_decompress_struct cinfo, bool is_prog, bool is_arith) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4686 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4687 int c, ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4688 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4689 cinfo.progressive_mode = is_prog; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4690 cinfo.arith_code = is_arith; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4691 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4692 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4693 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4694 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4695 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4696 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4697 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4698 cinfo.data_precision = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4699 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4700 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4701 cinfo.image_height = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4702 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4703 cinfo.image_height |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4704 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4705 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4706 cinfo.image_width = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4707 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4708 cinfo.image_width |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4709 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4710 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4711 cinfo.num_components = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4712 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4713 length -= 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4714 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4715 // TRACEMS4(cinfo, 1, JTRC_SOF, cinfo.unread_marker, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4716 // cast(int) cinfo.image_width, cast(int) cinfo.image_height, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4717 // cinfo.num_components); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4718 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4719 if (cinfo.marker.saw_SOF) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4720 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4721 // ERREXIT(cinfo, JERR_SOF_DUPLICATE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4722 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4723 /* We don't support files in which the image height is initially specified */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4724 /* as 0 and is later redefined by DNL. As long as we have to check that, */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4725 /* might as well have a general sanity check. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4726 if (cinfo.image_height <= 0 || cinfo.image_width <= 0 || cinfo.num_components <= 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4727 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4728 // ERREXIT(cinfo, JERR_EMPTY_IMAGE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4729 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4730 if (length !is (cinfo.num_components * 3)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4731 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4732 // ERREXIT(cinfo, JERR_BAD_LENGTH); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4733 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4734 if (cinfo.comp_info is null) /* do only once, even if suspend */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4735 cinfo.comp_info = new jpeg_component_info[cinfo.num_components]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4736 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4737 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4738 jpeg_component_info compptr = cinfo.comp_info[ci] = new jpeg_component_info(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4739 compptr.component_index = ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4740 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4741 compptr.component_id = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4742 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4743 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4744 compptr.h_samp_factor = (c >> 4) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4745 compptr.v_samp_factor = (c ) & 15; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4746 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4747 compptr.quant_tbl_no = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4748 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4749 // TRACEMS4(cinfo, 1, JTRC_SOF_COMPONENT, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4750 // compptr.component_id, compptr.h_samp_factor, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4751 // compptr.v_samp_factor, compptr.quant_tbl_no); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4752 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4753 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4754 cinfo.marker.saw_SOF = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4755 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4756 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4757 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4758 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4759 static void sep_upsample (jpeg_decompress_struct cinfo, byte[][][] input_buf, int[] input_buf_offset, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4760 int[] in_row_group_ctr, int in_row_groups_avail, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4761 byte[][] output_buf, int[] out_row_ctr, int out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4762 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4763 jpeg_upsampler upsample = cinfo.upsample; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4764 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4765 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4766 int num_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4767 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4768 /* Fill the conversion buffer, if it's empty */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4769 if (upsample.next_row_out >= cinfo.max_v_samp_factor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4770 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4771 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4772 /* Invoke per-component upsample method. Notice we pass a POINTER |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4773 * to color_buf[ci], so that fullsize_upsample can change it. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4774 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4775 int offset = input_buf_offset[ci] + (in_row_group_ctr[0] * upsample.rowgroup_height[ci]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4776 switch (upsample.methods[ci]) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4777 case NOOP_UPSAMPLE: noop_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4778 case FULLSIZE_UPSAMPLE: fullsize_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4779 case H2V1_FANCY_UPSAMPLE: h2v1_fancy_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4780 case H2V1_UPSAMPLE: h2v1_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4781 case H2V2_FANCY_UPSAMPLE: h2v2_fancy_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4782 case H2V2_UPSAMPLE: h2v2_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4783 case INT_UPSAMPLE: int_upsample(cinfo, compptr, input_buf[ci], offset, upsample.color_buf, upsample.color_buf_offset, ci); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4784 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4785 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4786 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4787 upsample.next_row_out = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4788 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4789 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4790 /* Color-convert and emit rows */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4791 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4792 /* How many we have in the buffer: */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4793 num_rows = (cinfo.max_v_samp_factor - upsample.next_row_out); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4794 /* Not more than the distance to the end of the image. Need this test |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4795 * in case the image height is not a multiple of max_v_samp_factor: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4796 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4797 if (num_rows > upsample.rows_to_go) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4798 num_rows = upsample.rows_to_go; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4799 /* And not more than what the client can accept: */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4800 out_rows_avail -= out_row_ctr[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4801 if (num_rows > out_rows_avail) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4802 num_rows = out_rows_avail; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4803 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4804 switch (cinfo.cconvert.color_convert) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4805 case NULL_CONVERT: null_convert (cinfo, upsample.color_buf, upsample.color_buf_offset, upsample.next_row_out, output_buf, out_row_ctr[0], num_rows); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4806 case GRAYSCALE_CONVERT: grayscale_convert (cinfo, upsample.color_buf, upsample.color_buf_offset, upsample.next_row_out, output_buf, out_row_ctr[0], num_rows); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4807 case YCC_RGB_CONVERT: ycc_rgb_convert (cinfo, upsample.color_buf, upsample.color_buf_offset, upsample.next_row_out, output_buf, out_row_ctr[0], num_rows); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4808 case GRAY_RGB_CONVERT: gray_rgb_convert (cinfo, upsample.color_buf, upsample.color_buf_offset, upsample.next_row_out, output_buf, out_row_ctr[0], num_rows); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4809 case YCCK_CMYK_CONVERT: error(); break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4810 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4811 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4812 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4813 /* Adjust counts */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4814 out_row_ctr[0] += num_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4815 upsample.rows_to_go -= num_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4816 upsample.next_row_out += num_rows; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4817 /* When the buffer is emptied, declare this input row group consumed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4818 if (upsample.next_row_out >= cinfo.max_v_samp_factor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4819 in_row_group_ctr[0]++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4820 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4821 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4822 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4823 static void noop_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4824 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4825 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4826 output_data_ptr[output_data_index] = null; /* safety check */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4827 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4828 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4829 static void fullsize_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4830 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4831 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4832 output_data_ptr[output_data_index] = input_data; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4833 output_data_offset[output_data_index] = input_data_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4834 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4835 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4836 static void h2v1_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4837 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4838 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4839 byte[][] output_data = output_data_ptr[output_data_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4840 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4841 byte invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4842 int outend; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4843 int inrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4844 output_data_offset[output_data_index] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4845 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4846 for (inrow = 0; inrow < cinfo.max_v_samp_factor; inrow++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4847 inptr = input_data[inrow+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4848 outptr = output_data[inrow]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4849 int inptr_offset = 0, outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4850 outend = outptr_offset + cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4851 while (outptr_offset < outend) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4852 invalue = inptr[inptr_offset++]; /* don't need GETJSAMPLE() here */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4853 outptr[outptr_offset++] = invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4854 outptr[outptr_offset++] = invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4855 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4856 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4857 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4858 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4859 static void h2v2_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4860 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4861 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4862 byte[][] output_data = output_data_ptr[output_data_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4863 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4864 byte invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4865 int outend; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4866 int inrow, outrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4867 output_data_offset[output_data_index] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4868 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4869 inrow = outrow = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4870 while (outrow < cinfo.max_v_samp_factor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4871 inptr = input_data[inrow+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4872 outptr = output_data[outrow]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4873 int inptr_offset = 0, outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4874 outend = outptr_offset + cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4875 while (outptr_offset < outend) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4876 invalue = inptr[inptr_offset++]; /* don't need GETJSAMPLE() here */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4877 outptr[outptr_offset++] = invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4878 outptr[outptr_offset++] = invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4879 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4880 jcopy_sample_rows(output_data, outrow, output_data, outrow+1, 1, cinfo.output_width); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4881 inrow++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4882 outrow += 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4883 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4884 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4885 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4886 static void h2v1_fancy_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4887 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4888 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4889 byte[][] output_data = output_data_ptr[output_data_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4890 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4891 int invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4892 int colctr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4893 int inrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4894 output_data_offset[output_data_index] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4895 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4896 for (inrow = 0; inrow < cinfo.max_v_samp_factor; inrow++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4897 inptr = input_data[inrow+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4898 outptr = output_data[inrow]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4899 int inptr_offset = 0, outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4900 /* Special case for first column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4901 invalue = inptr[inptr_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4902 outptr[outptr_offset++] = cast(byte) invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4903 outptr[outptr_offset++] = cast(byte) ((invalue * 3 + (inptr[inptr_offset] & 0xFF) + 2) >> 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4904 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4905 for (colctr = compptr.downsampled_width - 2; colctr > 0; colctr--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4906 /* General case: 3/4 * nearer pixel + 1/4 * further pixel */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4907 invalue = (inptr[inptr_offset++] & 0xFF) * 3; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4908 outptr[outptr_offset++] = cast(byte) ((invalue + (inptr[inptr_offset-2] & 0xFF) + 1) >> 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4909 outptr[outptr_offset++] = cast(byte) ((invalue + (inptr[inptr_offset] & 0xFF) + 2) >> 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4910 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4911 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4912 /* Special case for last column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4913 invalue = (inptr[inptr_offset] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4914 outptr[outptr_offset++] = cast(byte) ((invalue * 3 + (inptr[inptr_offset-1] & 0xFF) + 1) >> 2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4915 outptr[outptr_offset++] = cast(byte) invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4916 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4917 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4918 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4919 static void h2v2_fancy_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4920 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4921 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4922 byte[][] output_data = output_data_ptr[output_data_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4923 byte[] inptr0, inptr1, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4924 int thiscolsum, lastcolsum, nextcolsum; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4925 int colctr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4926 int inrow, outrow, v; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4927 output_data_offset[output_data_index] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4928 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4929 inrow = outrow = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4930 while (outrow < cinfo.max_v_samp_factor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4931 for (v = 0; v < 2; v++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4932 /* inptr0 points to nearest input row, inptr1 points to next nearest */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4933 inptr0 = input_data[inrow+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4934 if (v is 0) /* next nearest is row above */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4935 inptr1 = input_data[inrow-1+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4936 else /* next nearest is row below */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4937 inptr1 = input_data[inrow+1+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4938 outptr = output_data[outrow++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4939 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4940 int inptr0_offset = 0, inptr1_offset = 0, outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4941 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4942 /* Special case for first column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4943 thiscolsum = (inptr0[inptr0_offset++] & 0xFF) * 3 + (inptr1[inptr1_offset++] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4944 nextcolsum = (inptr0[inptr0_offset++] & 0xFF) * 3 + (inptr1[inptr1_offset++] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4945 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 4 + 8) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4946 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 3 + nextcolsum + 7) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4947 lastcolsum = thiscolsum; thiscolsum = nextcolsum; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4948 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4949 for (colctr = compptr.downsampled_width - 2; colctr > 0; colctr--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4950 /* General case: 3/4 * nearer pixel + 1/4 * further pixel in each */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4951 /* dimension, thus 9/16, 3/16, 3/16, 1/16 overall */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4952 nextcolsum = (inptr0[inptr0_offset++] & 0xFF) * 3 + (inptr1[inptr1_offset++] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4953 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 3 + lastcolsum + 8) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4954 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 3 + nextcolsum + 7) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4955 lastcolsum = thiscolsum; thiscolsum = nextcolsum; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4956 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4957 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4958 /* Special case for last column */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4959 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 3 + lastcolsum + 8) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4960 outptr[outptr_offset++] = cast(byte) ((thiscolsum * 4 + 7) >> 4); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4961 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4962 inrow++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4963 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4964 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4965 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4966 static void int_upsample (jpeg_decompress_struct cinfo, jpeg_component_info compptr, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4967 byte[][] input_data, int input_data_offset, byte[][][] output_data_ptr, int[] output_data_offset, int output_data_index) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4968 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4969 jpeg_upsampler upsample = cinfo.upsample; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4970 byte[][] output_data = output_data_ptr[output_data_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4971 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4972 byte invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4973 int h; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4974 int outend; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4975 int h_expand, v_expand; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4976 int inrow, outrow; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4977 output_data_offset[output_data_index] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4978 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4979 h_expand = upsample.h_expand[compptr.component_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4980 v_expand = upsample.v_expand[compptr.component_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4981 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4982 inrow = outrow = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4983 while (outrow < cinfo.max_v_samp_factor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4984 /* Generate one output row with proper horizontal expansion */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4985 inptr = input_data[inrow+input_data_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4986 int inptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4987 outptr = output_data[outrow]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4988 int outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4989 outend = outptr_offset + cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4990 while (outptr_offset < outend) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4991 invalue = inptr[inptr_offset++]; /* don't need GETJSAMPLE() here */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4992 for (h = h_expand; h > 0; h--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4993 outptr[outptr_offset++] = invalue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4994 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4995 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4996 /* Generate any additional output rows by duplicating the first one */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4997 if (v_expand > 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4998 jcopy_sample_rows(output_data, outrow, output_data, outrow+1, v_expand-1, cinfo.output_width); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
4999 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5000 inrow++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5001 outrow += v_expand; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5002 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5003 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5004 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5005 static void null_convert (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5006 byte[][][] input_buf, int[] input_buf_offset, int input_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5007 byte[][] output_buf, int output_buf_offset, int num_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5008 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5009 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5010 int count; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5011 int num_components = cinfo.num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5012 int num_cols = cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5013 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5014 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5015 while (--num_rows >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5016 for (ci = 0; ci < num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5017 inptr = input_buf[ci][input_row+input_buf_offset[0]]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5018 outptr = output_buf[output_buf_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5019 /* BGR instead of RGB */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5020 int offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5021 switch (ci) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5022 case 2: offset = RGB_BLUE; break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5023 case 1: offset = RGB_GREEN; break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5024 case 0: offset = RGB_RED; break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5025 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5026 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5027 int outptr_offset = offset, inptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5028 for (count = num_cols; count > 0; count--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5029 outptr[outptr_offset] = inptr[inptr_offset++]; /* needn't bother with GETJSAMPLE() here */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5030 outptr_offset += num_components; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5031 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5032 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5033 input_row++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5034 output_buf_offset++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5035 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5036 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5037 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5038 static void grayscale_convert (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5039 byte[][][] input_buf, int[] input_buf_offset, int input_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5040 byte[][] output_buf, int output_buf_offset, int num_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5041 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5042 jcopy_sample_rows(input_buf[0], input_row+input_buf_offset[0], output_buf, output_buf_offset, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5043 num_rows, cinfo.output_width); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5044 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5045 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5046 static void gray_rgb_convert (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5047 byte[][][] input_buf, int[] input_buf_offset, int input_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5048 byte[][] output_buf, int output_buf_offset, int num_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5049 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5050 byte[] inptr, outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5051 int col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5052 int num_cols = cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5053 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5054 while (--num_rows >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5055 inptr = input_buf[0][input_row+++input_buf_offset[0]]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5056 outptr = output_buf[output_buf_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5057 int outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5058 for (col = 0; col < num_cols; col++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5059 /* We can dispense with GETJSAMPLE() here */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5060 outptr[RGB_RED+outptr_offset] = outptr[RGB_GREEN+outptr_offset] = outptr[RGB_BLUE+outptr_offset] = inptr[col]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5061 outptr_offset += RGB_PIXELSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5062 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5063 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5064 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5065 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5066 static void ycc_rgb_convert (jpeg_decompress_struct cinfo, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5067 byte[][][] input_buf, int[] input_buf_offset, int input_row, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5068 byte[][] output_buf, int output_buf_offset, int num_rows) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5069 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5070 jpeg_color_deconverter cconvert = cinfo.cconvert; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5071 int y, cb, cr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5072 byte[] outptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5073 byte[] inptr0, inptr1, inptr2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5074 int col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5075 int num_cols = cinfo.output_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5076 /* copy these pointers into registers if possible */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5077 byte[] range_limit = cinfo.sample_range_limit; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5078 int range_limit_offset = cinfo.sample_range_limit_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5079 int[] Crrtab = cconvert.Cr_r_tab; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5080 int[] Cbbtab = cconvert.Cb_b_tab; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5081 int[] Crgtab = cconvert.Cr_g_tab; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5082 int[] Cbgtab = cconvert.Cb_g_tab; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5083 // SHIFT_TEMPS |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5084 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5085 while (--num_rows >= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5086 inptr0 = input_buf[0][input_row+input_buf_offset[0]]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5087 inptr1 = input_buf[1][input_row+input_buf_offset[1]]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5088 inptr2 = input_buf[2][input_row+input_buf_offset[2]]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5089 input_row++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5090 outptr = output_buf[output_buf_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5091 int outptr_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5092 for (col = 0; col < num_cols; col++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5093 y = (inptr0[col] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5094 cb = (inptr1[col] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5095 cr = (inptr2[col] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5096 /* Range-limiting is essential due to noise introduced by DCT losses. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5097 outptr[outptr_offset + RGB_RED] = range_limit[y + Crrtab[cr] + range_limit_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5098 outptr[outptr_offset + RGB_GREEN] = range_limit[y + ((Cbgtab[cb] + Crgtab[cr]>>SCALEBITS)) + range_limit_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5099 outptr[outptr_offset + RGB_BLUE] = range_limit[y + Cbbtab[cb] + range_limit_offset]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5100 outptr_offset += RGB_PIXELSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5101 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5102 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5103 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5104 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5105 static bool process_APPn(int n, jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5106 if (n is 0 || n is 14) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5107 return get_interesting_appn(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5108 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5109 return skip_variable(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5110 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5111 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5112 static bool process_COM(jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5113 return skip_variable(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5114 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5115 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5116 static void skip_input_data (jpeg_decompress_struct cinfo, int num_bytes) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5117 if (num_bytes > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5118 while (num_bytes > cinfo.bytes_in_buffer - cinfo.bytes_offset) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5119 num_bytes -= cinfo.bytes_in_buffer - cinfo.bytes_offset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5120 if (!fill_input_buffer(cinfo)) error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5121 /* note we assume that fill_input_buffer will never return FALSE, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5122 * so suspension need not be handled. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5123 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5124 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5125 cinfo.bytes_offset += num_bytes; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5126 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5127 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5128 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5129 static bool skip_variable (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5130 /* Skip over an unknown or uninteresting variable-length marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5131 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5132 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5133 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5134 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5135 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5136 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5137 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5138 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5139 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5140 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5141 // TRACEMS2(cinfo, 1, JTRC_MISC_MARKER, cinfo.unread_marker, cast(int) length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5142 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5143 if (length > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5144 skip_input_data (cinfo, length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5145 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5146 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5147 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5148 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5149 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5150 static bool get_interesting_appn (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5151 /* Process an APP0 or APP14 marker without saving it */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5152 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5153 int length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5154 byte[] b = new byte[APPN_DATA_LEN]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5155 int i, numtoread; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5156 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5157 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5158 length = (cinfo.buffer[cinfo.bytes_offset++] & 0xFF) << 8; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5159 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5160 length |= cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5161 length -= 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5162 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5163 /* get the interesting part of the marker data */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5164 if (length >= APPN_DATA_LEN) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5165 numtoread = APPN_DATA_LEN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5166 else if (length > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5167 numtoread = length; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5168 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5169 numtoread = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5170 for (i = 0; i < numtoread; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5171 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5172 b[i] = cinfo.buffer[cinfo.bytes_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5173 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5174 length -= numtoread; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5175 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5176 /* process it */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5177 switch (cinfo.unread_marker) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5178 case M_APP0: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5179 examine_app0(cinfo, b, numtoread, length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5180 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5181 case M_APP14: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5182 examine_app14(cinfo, b, numtoread, length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5183 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5184 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5185 /* can't get here unless jpeg_save_markers chooses wrong processor */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5186 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5187 // ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo.unread_marker); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5188 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5189 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5190 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5191 /* skip any remaining data -- could be lots */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5192 if (length > 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5193 skip_input_data (cinfo, length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5194 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5195 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5196 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5197 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5198 static void examine_app0 (jpeg_decompress_struct cinfo, byte[] data, int datalen, int remaining) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5199 /* Examine first few bytes from an APP0. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5200 * Take appropriate action if it is a JFIF marker. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5201 * datalen is # of bytes at data[], remaining is length of rest of marker data. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5202 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5203 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5204 int totallen = datalen + remaining; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5205 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5206 if (datalen >= APP0_DATA_LEN && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5207 (data[0] & 0xFF) is 0x4A && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5208 (data[1] & 0xFF) is 0x46 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5209 (data[2] & 0xFF) is 0x49 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5210 (data[3] & 0xFF) is 0x46 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5211 (data[4] & 0xFF) is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5212 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5213 /* Found JFIF APP0 marker: save info */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5214 cinfo.saw_JFIF_marker = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5215 cinfo.JFIF_major_version = (data[5]); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5216 cinfo.JFIF_minor_version = cast(byte)(data[6] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5217 cinfo.density_unit = cast(byte)(data[7] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5218 cinfo.X_density = cast(short)(((data[8] & 0xFF) << 8) + (data[9] & 0xFF)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5219 cinfo.Y_density = cast(short)(((data[10] & 0xFF) << 8) + (data[11] & 0xFF)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5220 /* Check version. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5221 * Major version must be 1, anything else signals an incompatible change. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5222 * (We used to treat this as an error, but now it's a nonfatal warning, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5223 * because some bozo at Hijaak couldn't read the spec.) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5224 * Minor version should be 0..2, but process anyway if newer. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5225 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5226 if (cinfo.JFIF_major_version !is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5227 // WARNMS2(cinfo, JWRN_JFIF_MAJOR, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5228 // cinfo.JFIF_major_version, cinfo.JFIF_minor_version); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5229 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5230 /* Generate trace messages */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5231 // TRACEMS5(cinfo, 1, JTRC_JFIF, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5232 // cinfo.JFIF_major_version, cinfo.JFIF_minor_version, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5233 // cinfo.X_density, cinfo.Y_density, cinfo.density_unit); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5234 /* Validate thumbnail dimensions and issue appropriate messages */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5235 if (((data[12] & 0xFF) | (data[13]) & 0xFF) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5236 // TRACEMS2(cinfo, 1, JTRC_JFIF_THUMBNAIL, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5237 // GETJOCTET(data[12]), GETJOCTET(data[13])); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5238 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5239 totallen -= APP0_DATA_LEN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5240 if (totallen !is ((data[12] & 0xFF) * (data[13] & 0xFF) * 3)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5241 // TRACEMS1(cinfo, 1, JTRC_JFIF_BADTHUMBNAILSIZE, cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5242 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5243 } else if (datalen >= 6 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5244 (data[0] & 0xFF) is 0x4A && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5245 (data[1] & 0xFF) is 0x46 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5246 (data[2] & 0xFF) is 0x58 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5247 (data[3] & 0xFF) is 0x58 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5248 (data[4] & 0xFF) is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5249 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5250 /* Found JFIF "JFXX" extension APP0 marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5251 /* The library doesn't actually do anything with these, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5252 * but we try to produce a helpful trace message. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5253 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5254 switch ((data[5]) & 0xFF) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5255 case 0x10: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5256 // TRACEMS1(cinfo, 1, JTRC_THUMB_JPEG, cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5257 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5258 case 0x11: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5259 // TRACEMS1(cinfo, 1, JTRC_THUMB_PALETTE, cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5260 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5261 case 0x13: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5262 // TRACEMS1(cinfo, 1, JTRC_THUMB_RGB, cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5263 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5264 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5265 // TRACEMS2(cinfo, 1, JTRC_JFIF_EXTENSION, GETJOCTET(data[5]), cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5266 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5267 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5268 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5269 /* Start of APP0 does not match "JFIF" or "JFXX", or too short */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5270 // TRACEMS1(cinfo, 1, JTRC_APP0, cast(int) totallen); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5271 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5272 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5273 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5274 static void examine_app14 (jpeg_decompress_struct cinfo, byte[] data, int datalen, int remaining) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5275 /* Examine first few bytes from an APP14. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5276 * Take appropriate action if it is an Adobe marker. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5277 * datalen is # of bytes at data[], remaining is length of rest of marker data. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5278 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5279 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5280 int /*version, flags0, flags1, */transform; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5281 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5282 if (datalen >= APP14_DATA_LEN && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5283 (data[0] & 0xFF) is 0x41 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5284 (data[1] & 0xFF) is 0x64 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5285 (data[2] & 0xFF) is 0x6F && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5286 (data[3] & 0xFF) is 0x62 && |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5287 (data[4] & 0xFF) is 0x65) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5288 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5289 /* Found Adobe APP14 marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5290 // version = ((data[5] & 0xFF) << 8) + (data[6] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5291 // flags0 = ((data[7] & 0xFF) << 8) + (data[8] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5292 // flags1 = ((data[9] & 0xFF) << 8) + (data[10] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5293 transform = (data[11] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5294 // TRACEMS4(cinfo, 1, JTRC_ADOBE, version, flags0, flags1, transform); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5295 cinfo.saw_Adobe_marker = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5296 cinfo.Adobe_transform = cast(byte) transform; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5297 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5298 /* Start of APP14 does not match "Adobe", or too short */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5299 // TRACEMS1(cinfo, 1, JTRC_APP14, cast(int) (datalen + remaining)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5300 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5301 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5302 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5303 static bool get_soi (jpeg_decompress_struct cinfo) /* Process an SOI marker */ { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5304 int i; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5305 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5306 // TRACEMS(cinfo, 1, JTRC_SOI); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5307 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5308 if (cinfo.marker.saw_SOI) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5309 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5310 // ERREXIT(cinfo, JERR_SOI_DUPLICATE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5311 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5312 /* Reset all parameters that are defined to be reset by SOI */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5313 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5314 for (i = 0; i < NUM_ARITH_TBLS; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5315 cinfo.arith_dc_L[i] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5316 cinfo.arith_dc_U[i] = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5317 cinfo.arith_ac_K[i] = 5; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5318 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5319 cinfo.restart_interval = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5320 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5321 /* Set initial assumptions for colorspace etc */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5322 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5323 cinfo.jpeg_color_space = JCS_UNKNOWN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5324 cinfo.CCIR601_sampling = false; /* Assume non-CCIR sampling??? */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5325 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5326 cinfo.saw_JFIF_marker = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5327 cinfo.JFIF_major_version = 1; /* set default JFIF APP0 values */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5328 cinfo.JFIF_minor_version = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5329 cinfo.density_unit = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5330 cinfo.X_density = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5331 cinfo.Y_density = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5332 cinfo.saw_Adobe_marker = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5333 cinfo.Adobe_transform = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5334 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5335 cinfo.marker.saw_SOI = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5336 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5337 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5338 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5339 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5340 static void jinit_input_controller (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5341 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5342 /* Initialize state: can't use reset_input_controller since we don't |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5343 * want to try to reset other modules yet. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5344 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5345 jpeg_input_controller inputctl = cinfo.inputctl = new jpeg_input_controller(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5346 inputctl.has_multiple_scans = false; /* "unknown" would be better */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5347 inputctl.eoi_reached = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5348 inputctl.inheaders = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5349 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5350 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5351 static void reset_marker_reader (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5352 jpeg_marker_reader marker = cinfo.marker; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5353 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5354 cinfo.comp_info = null; /* until allocated by get_sof */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5355 cinfo.input_scan_number = 0; /* no SOS seen yet */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5356 cinfo.unread_marker = 0; /* no pending marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5357 marker.saw_SOI = false; /* set internal state too */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5358 marker.saw_SOF = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5359 marker.discarded_bytes = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5360 // marker.cur_marker = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5361 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5362 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5363 static void reset_input_controller (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5364 jpeg_input_controller inputctl = cinfo.inputctl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5365 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5366 inputctl.has_multiple_scans = false; /* "unknown" would be better */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5367 inputctl.eoi_reached = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5368 inputctl.inheaders = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5369 /* Reset other modules */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5370 reset_marker_reader (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5371 /* Reset progression state -- would be cleaner if entropy decoder did this */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5372 cinfo.coef_bits = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5373 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5374 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5375 static void finish_output_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5376 jpeg_decomp_master master = cinfo.master; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5377 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5378 if (cinfo.quantize_colors) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5379 error(SWT.ERROR_NOT_IMPLEMENTED); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5380 // (*cinfo.cquantize.finish_pass) (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5381 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5382 master.pass_number++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5383 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5384 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5385 static void jpeg_destroy (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5386 /* We need only tell the memory manager to release everything. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5387 /* NB: mem pointer is NULL if memory mgr failed to initialize. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5388 // if (cinfo.mem !is NULL) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5389 // (*cinfo.mem.self_destruct) (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5390 // cinfo.mem = NULL; /* be safe if jpeg_destroy is called twice */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5391 cinfo.global_state = 0; /* mark it destroyed */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5392 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5393 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5394 static void jpeg_destroy_decompress (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5395 jpeg_destroy(cinfo); /* use common routine */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5396 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5397 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5398 static bool jpeg_input_complete (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5399 /* Check for valid jpeg object */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5400 if (cinfo.global_state < DSTATE_START || cinfo.global_state > DSTATE_STOPPING) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5401 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5402 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5403 return cinfo.inputctl.eoi_reached; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5404 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5405 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5406 static bool jpeg_start_output (jpeg_decompress_struct cinfo, int scan_number) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5407 if (cinfo.global_state !is DSTATE_BUFIMAGE && cinfo.global_state !is DSTATE_PRESCAN) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5408 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5409 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5410 /* Limit scan number to valid range */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5411 if (scan_number <= 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5412 scan_number = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5413 if (cinfo.inputctl.eoi_reached && scan_number > cinfo.input_scan_number) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5414 scan_number = cinfo.input_scan_number; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5415 cinfo.output_scan_number = scan_number; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5416 /* Perform any dummy output passes, and set up for the real pass */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5417 return output_pass_setup(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5418 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5419 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5420 static bool jpeg_finish_output (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5421 if ((cinfo.global_state is DSTATE_SCANNING || cinfo.global_state is DSTATE_RAW_OK) && cinfo.buffered_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5422 /* Terminate this pass. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5423 /* We do not require the whole pass to have been completed. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5424 finish_output_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5425 cinfo.global_state = DSTATE_BUFPOST; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5426 } else if (cinfo.global_state !is DSTATE_BUFPOST) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5427 /* BUFPOST = repeat call after a suspension, anything else is error */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5428 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5429 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5430 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5431 /* Read markers looking for SOS or EOI */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5432 while (cinfo.input_scan_number <= cinfo.output_scan_number && !cinfo.inputctl.eoi_reached) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5433 if (consume_input (cinfo) is JPEG_SUSPENDED) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5434 return false; /* Suspend, come back later */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5435 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5436 cinfo.global_state = DSTATE_BUFIMAGE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5437 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5438 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5439 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5440 static bool jpeg_finish_decompress (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5441 if ((cinfo.global_state is DSTATE_SCANNING || cinfo.global_state is DSTATE_RAW_OK) && ! cinfo.buffered_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5442 /* Terminate final pass of non-buffered mode */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5443 if (cinfo.output_scanline < cinfo.output_height) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5444 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5445 // ERREXIT(cinfo, JERR_TOO_LITTLE_DATA); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5446 finish_output_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5447 cinfo.global_state = DSTATE_STOPPING; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5448 } else if (cinfo.global_state is DSTATE_BUFIMAGE) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5449 /* Finishing after a buffered-image operation */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5450 cinfo.global_state = DSTATE_STOPPING; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5451 } else if (cinfo.global_state !is DSTATE_STOPPING) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5452 /* STOPPING = repeat call after a suspension, anything else is error */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5453 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5454 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5455 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5456 /* Read until EOI */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5457 while (! cinfo.inputctl.eoi_reached) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5458 if (consume_input (cinfo) is JPEG_SUSPENDED) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5459 return false; /* Suspend, come back later */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5460 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5461 /* Do final cleanup */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5462 // (*cinfo.src.term_source) (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5463 /* We can use jpeg_abort to release memory and reset global_state */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5464 jpeg_abort(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5465 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5466 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5467 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5468 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5469 static int jpeg_read_header (jpeg_decompress_struct cinfo, bool require_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5470 int retcode; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5471 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5472 if (cinfo.global_state !is DSTATE_START && cinfo.global_state !is DSTATE_INHEADER) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5473 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5474 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5475 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5476 retcode = jpeg_consume_input(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5477 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5478 switch (retcode) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5479 case JPEG_REACHED_SOS: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5480 retcode = JPEG_HEADER_OK; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5481 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5482 case JPEG_REACHED_EOI: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5483 if (require_image) /* Complain if application wanted an image */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5484 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5485 // ERREXIT(cinfo, JERR_NO_IMAGE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5486 /* Reset to start state; it would be safer to require the application to |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5487 * call jpeg_abort, but we can't change it now for compatibility reasons. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5488 * A side effect is to free any temporary memory (there shouldn't be any). |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5489 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5490 jpeg_abort(cinfo); /* sets state = DSTATE_START */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5491 retcode = JPEG_HEADER_TABLES_ONLY; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5492 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5493 case JPEG_SUSPENDED: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5494 /* no work */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5495 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5496 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5497 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5498 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5499 return retcode; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5500 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5501 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5502 static int dummy_consume_data (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5503 return JPEG_SUSPENDED; /* Always indicate nothing was done */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5504 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5505 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5506 static int consume_data (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5507 jpeg_d_coef_controller coef = cinfo.coef; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5508 int MCU_col_num; /* index of current MCU within row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5509 int blkn, ci, xindex, yindex, yoffset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5510 int start_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5511 // short[][][][] buffer = new short[MAX_COMPS_IN_SCAN][][][]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5512 short[][] buffer_ptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5513 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5514 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5515 // /* Align the virtual buffers for the components used in this scan. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5516 // for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5517 // compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5518 // buffer[ci] = coef.whole_image[compptr.component_index]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5519 // /* Note: entropy decoder expects buffer to be zeroed, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5520 // * but this is handled automatically by the memory manager |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5521 // * because we requested a pre-zeroed array. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5522 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5523 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5524 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5525 /* Loop to process one whole iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5526 for (yoffset = coef.MCU_vert_offset; yoffset < coef.MCU_rows_per_iMCU_row; yoffset++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5527 for (MCU_col_num = coef.MCU_ctr; MCU_col_num < cinfo.MCUs_per_row; MCU_col_num++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5528 /* Construct list of pointers to DCT blocks belonging to this MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5529 blkn = 0; /* index of current DCT block within MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5530 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5531 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5532 start_col = MCU_col_num * compptr.MCU_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5533 for (yindex = 0; yindex < compptr.MCU_height; yindex++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5534 // buffer_ptr = buffer[ci][yindex+yoffset] + start_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5535 buffer_ptr = coef.whole_image[compptr.component_index][yindex+yoffset+cinfo.input_iMCU_row*compptr.v_samp_factor]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5536 int buffer_ptr_offset = start_col; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5537 for (xindex = 0; xindex < compptr.MCU_width; xindex++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5538 coef.MCU_buffer[blkn++] = buffer_ptr[buffer_ptr_offset++]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5539 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5540 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5541 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5542 /* Try to fetch the MCU. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5543 if (! cinfo.entropy.decode_mcu (cinfo, coef.MCU_buffer)) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5544 /* Suspension forced; update state counters and exit */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5545 coef.MCU_vert_offset = yoffset; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5546 coef.MCU_ctr = MCU_col_num; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5547 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5548 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5549 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5550 /* Completed an MCU row, but perhaps not an iMCU row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5551 coef.MCU_ctr = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5552 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5553 /* Completed the iMCU row, advance counters for next one */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5554 if (++(cinfo.input_iMCU_row) < cinfo.total_iMCU_rows) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5555 coef.start_iMCU_row(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5556 return JPEG_ROW_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5557 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5558 /* Completed the scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5559 finish_input_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5560 return JPEG_SCAN_COMPLETED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5561 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5562 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5563 static int consume_input (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5564 switch (cinfo.inputctl.consume_input) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5565 case COEF_CONSUME_INPUT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5566 switch (cinfo.coef.consume_data) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5567 case CONSUME_DATA: return consume_data(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5568 case DUMMY_CONSUME_DATA: return dummy_consume_data(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5569 default: error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5570 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5571 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5572 case INPUT_CONSUME_INPUT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5573 return consume_markers(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5574 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5575 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5576 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5577 return 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5578 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5579 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5580 static bool fill_input_buffer(jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5581 try { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5582 InputStream inputStream = cinfo.inputStream; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5583 int nbytes = inputStream.read(cinfo.buffer); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5584 if (nbytes <= 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5585 if (cinfo.start_of_file) /* Treat empty input file as fatal error */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5586 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5587 // ERREXIT(cinfo, JERR_INPUT_EMPTY); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5588 // WARNMS(cinfo, JWRN_JPEG_EOF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5589 /* Insert a fake EOI marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5590 cinfo.buffer[0] = cast(byte)0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5591 cinfo.buffer[1] = cast(byte)M_EOI; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5592 nbytes = 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5593 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5594 cinfo.bytes_in_buffer = nbytes; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5595 cinfo.bytes_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5596 cinfo.start_of_file = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5597 } catch (IOException e) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5598 error(SWT.ERROR_IO); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5599 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5600 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5601 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5602 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5603 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5604 static bool first_marker (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5605 /* Like next_marker, but used to obtain the initial SOI marker. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5606 /* For this marker, we do not allow preceding garbage or fill; otherwise, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5607 * we might well scan an entire input file before realizing it ain't JPEG. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5608 * If an application wants to process non-JFIF files, it must seek to the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5609 * SOI before calling the JPEG library. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5610 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5611 int c, c2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5612 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5613 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5614 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5615 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5616 c2 = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5617 if (c !is 0xFF || c2 !is M_SOI) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5618 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5619 // ERREXIT2(cinfo, JERR_NO_SOI, c, c2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5620 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5621 cinfo.unread_marker = c2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5622 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5623 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5624 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5625 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5626 static bool next_marker (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5627 int c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5628 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5629 for (;;) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5630 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5631 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5632 /* Skip any non-FF bytes. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5633 * This may look a bit inefficient, but it will not occur in a valid file. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5634 * We sync after each discarded byte so that a suspending data source |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5635 * can discard the byte from its buffer. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5636 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5637 while (c !is 0xFF) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5638 cinfo.marker.discarded_bytes++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5639 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5640 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5641 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5642 /* This loop swallows any duplicate FF bytes. Extra FFs are legal as |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5643 * pad bytes, so don't count them in discarded_bytes. We assume there |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5644 * will not be so many consecutive FF bytes as to overflow a suspending |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5645 * data source's input buffer. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5646 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5647 do { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5648 if (cinfo.bytes_offset is cinfo.bytes_in_buffer) fill_input_buffer(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5649 c = cinfo.buffer[cinfo.bytes_offset++] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5650 } while (c is 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5651 if (c !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5652 break; /* found a valid marker, exit loop */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5653 /* Reach here if we found a stuffed-zero data sequence (FF/00). |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5654 * Discard it and loop back to try again. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5655 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5656 cinfo.marker.discarded_bytes += 2; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5657 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5658 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5659 if (cinfo.marker.discarded_bytes !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5660 // WARNMS2(cinfo, JWRN_EXTRANEOUS_DATA, cinfo.marker.discarded_bytes, c); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5661 cinfo.marker.discarded_bytes = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5662 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5663 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5664 cinfo.unread_marker = c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5665 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5666 return true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5667 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5668 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5669 static int read_markers (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5670 /* Outer loop repeats once for each marker. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5671 for (;;) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5672 /* Collect the marker proper, unless we already did. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5673 /* NB: first_marker() enforces the requirement that SOI appear first. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5674 if (cinfo.unread_marker is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5675 if (! cinfo.marker.saw_SOI) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5676 if (! first_marker(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5677 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5678 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5679 if (! next_marker(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5680 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5681 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5682 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5683 /* At this point cinfo.unread_marker contains the marker code and the |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5684 * input point is just past the marker proper, but before any parameters. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5685 * A suspension will cause us to return with this state still true. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5686 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5687 switch (cinfo.unread_marker) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5688 case M_SOI: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5689 if (! get_soi(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5690 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5691 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5692 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5693 case M_SOF0: /* Baseline */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5694 case M_SOF1: /* Extended sequential, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5695 if (! get_sof(cinfo, false, false)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5696 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5697 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5698 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5699 case M_SOF2: /* Progressive, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5700 if (! get_sof(cinfo, true, false)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5701 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5702 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5703 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5704 case M_SOF9: /* Extended sequential, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5705 if (! get_sof(cinfo, false, true)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5706 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5707 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5708 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5709 case M_SOF10: /* Progressive, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5710 if (! get_sof(cinfo, true, true)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5711 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5712 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5713 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5714 /* Currently unsupported SOFn types */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5715 case M_SOF3: /* Lossless, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5716 case M_SOF5: /* Differential sequential, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5717 case M_SOF6: /* Differential progressive, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5718 case M_SOF7: /* Differential lossless, Huffman */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5719 case M_JPG: /* Reserved for JPEG extensions */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5720 case M_SOF11: /* Lossless, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5721 case M_SOF13: /* Differential sequential, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5722 case M_SOF14: /* Differential progressive, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5723 case M_SOF15: /* Differential lossless, arithmetic */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5724 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5725 // ERREXIT1(cinfo, JERR_SOF_UNSUPPORTED, cinfo.unread_marker); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5726 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5727 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5728 case M_SOS: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5729 if (! get_sos(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5730 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5731 cinfo.unread_marker = 0; /* processed the marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5732 return JPEG_REACHED_SOS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5733 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5734 case M_EOI: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5735 // TRACEMS(cinfo, 1, JTRC_EOI); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5736 cinfo.unread_marker = 0; /* processed the marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5737 return JPEG_REACHED_EOI; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5738 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5739 case M_DAC: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5740 if (! get_dac(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5741 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5742 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5743 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5744 case M_DHT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5745 if (! get_dht(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5746 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5747 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5748 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5749 case M_DQT: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5750 if (! get_dqt(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5751 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5752 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5753 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5754 case M_DRI: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5755 if (! get_dri(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5756 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5757 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5758 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5759 case M_APP0: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5760 case M_APP1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5761 case M_APP2: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5762 case M_APP3: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5763 case M_APP4: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5764 case M_APP5: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5765 case M_APP6: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5766 case M_APP7: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5767 case M_APP8: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5768 case M_APP9: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5769 case M_APP10: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5770 case M_APP11: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5771 case M_APP12: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5772 case M_APP13: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5773 case M_APP14: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5774 case M_APP15: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5775 if (! process_APPn(cinfo.unread_marker - M_APP0, cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5776 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5777 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5778 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5779 case M_COM: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5780 if (! process_COM(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5781 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5782 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5783 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5784 case M_RST0: /* these are all parameterless */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5785 case M_RST1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5786 case M_RST2: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5787 case M_RST3: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5788 case M_RST4: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5789 case M_RST5: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5790 case M_RST6: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5791 case M_RST7: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5792 case M_TEM: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5793 // TRACEMS1(cinfo, 1, JTRC_PARMLESS_MARKER, cinfo.unread_marker); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5794 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5795 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5796 case M_DNL: /* Ignore DNL ... perhaps the wrong thing */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5797 if (! skip_variable(cinfo)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5798 return JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5799 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5800 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5801 default: /* must be DHP, EXP, JPGn, or RESn */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5802 /* For now, we treat the reserved markers as fatal errors since they are |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5803 * likely to be used to signal incompatible JPEG Part 3 extensions. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5804 * Once the JPEG 3 version-number marker is well defined, this code |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5805 * ought to change! |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5806 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5807 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5808 // ERREXIT1(cinfo, JERR_UNKNOWN_MARKER, cinfo.unread_marker); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5809 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5810 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5811 /* Successfully processed marker, so reset state variable */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5812 cinfo.unread_marker = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5813 } /* end loop */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5814 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5815 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5816 static long jdiv_round_up (long a, long b) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5817 /* Compute a/b rounded up to next integer, ie, ceil(a/b) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5818 /* Assumes a >= 0, b > 0 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5819 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5820 return (a + b - 1) / b; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5821 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5822 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5823 static void initial_setup (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5824 /* Called once, when first SOS marker is reached */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5825 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5826 int ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5827 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5828 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5829 /* Make sure image isn't bigger than I can handle */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5830 if (cinfo.image_height > JPEG_MAX_DIMENSION || cinfo.image_width > JPEG_MAX_DIMENSION) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5831 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5832 // ERREXIT1(cinfo, JERR_IMAGE_TOO_BIG, (unsigned int) JPEG_MAX_DIMENSION); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5833 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5834 /* For now, precision must match compiled-in value... */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5835 if (cinfo.data_precision !is BITS_IN_JSAMPLE) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5836 error(" [data precision=" ~ to!(String)(cinfo.data_precision) ~ "]"); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5837 // ERREXIT1(cinfo, JERR_BAD_PRECISION, cinfo.data_precision); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5838 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5839 /* Check that number of components won't exceed internal array sizes */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5840 if (cinfo.num_components > MAX_COMPONENTS) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5841 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5842 // ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo.num_components, MAX_COMPONENTS); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5843 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5844 /* Compute maximum sampling factors; check factor validity */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5845 cinfo.max_h_samp_factor = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5846 cinfo.max_v_samp_factor = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5847 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5848 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5849 if (compptr.h_samp_factor<=0 || compptr.h_samp_factor>MAX_SAMP_FACTOR || compptr.v_samp_factor<=0 || compptr.v_samp_factor>MAX_SAMP_FACTOR) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5850 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5851 // ERREXIT(cinfo, JERR_BAD_SAMPLING); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5852 cinfo.max_h_samp_factor = Math.max(cinfo.max_h_samp_factor, compptr.h_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5853 cinfo.max_v_samp_factor = Math.max(cinfo.max_v_samp_factor, compptr.v_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5854 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5855 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5856 /* We initialize DCT_scaled_size and min_DCT_scaled_size to DCTSIZE. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5857 * In the full decompressor, this will be overridden by jdmaster.c; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5858 * but in the transcoder, jdmaster.c is not used, so we must do it here. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5859 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5860 cinfo.min_DCT_scaled_size = DCTSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5861 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5862 /* Compute dimensions of components */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5863 for (ci = 0; ci < cinfo.num_components; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5864 compptr = cinfo.comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5865 compptr.DCT_scaled_size = DCTSIZE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5866 /* Size in DCT blocks */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5867 compptr.width_in_blocks = cast(int)jdiv_round_up(cast(long) cinfo.image_width * cast(long) compptr.h_samp_factor, (cinfo.max_h_samp_factor * DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5868 compptr.height_in_blocks = cast(int)jdiv_round_up(cast(long) cinfo.image_height * cast(long) compptr.v_samp_factor, (cinfo.max_v_samp_factor * DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5869 /* downsampled_width and downsampled_height will also be overridden by |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5870 * jdmaster.c if we are doing full decompression. The transcoder library |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5871 * doesn't use these values, but the calling application might. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5872 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5873 /* Size in samples */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5874 compptr.downsampled_width = cast(int)jdiv_round_up(cast(long) cinfo.image_width * cast(long) compptr.h_samp_factor, cinfo.max_h_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5875 compptr.downsampled_height = cast(int)jdiv_round_up(cast(long) cinfo.image_height * cast(long) compptr.v_samp_factor, cinfo.max_v_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5876 /* Mark component needed, until color conversion says otherwise */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5877 compptr.component_needed = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5878 /* Mark no quantization table yet saved for component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5879 compptr.quant_table = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5880 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5881 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5882 /* Compute number of fully interleaved MCU rows. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5883 cinfo.total_iMCU_rows = cast(int)jdiv_round_up( cinfo.image_height, (cinfo.max_v_samp_factor*DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5884 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5885 /* Decide whether file contains multiple scans */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5886 if (cinfo.comps_in_scan < cinfo.num_components || cinfo.progressive_mode) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5887 cinfo.inputctl.has_multiple_scans = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5888 else |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5889 cinfo.inputctl.has_multiple_scans = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5890 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5891 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5892 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5893 static void per_scan_setup (jpeg_decompress_struct cinfo) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5894 /* Do computations that are needed before processing a JPEG scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5895 /* cinfo.comps_in_scan and cinfo.cur_comp_info[] were set from SOS marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5896 { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5897 int ci, mcublks, tmp = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5898 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5899 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5900 if (cinfo.comps_in_scan is 1) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5901 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5902 /* Noninterleaved (single-component) scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5903 compptr = cinfo.cur_comp_info[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5904 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5905 /* Overall image size in MCUs */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5906 cinfo.MCUs_per_row = compptr.width_in_blocks; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5907 cinfo.MCU_rows_in_scan = compptr.height_in_blocks; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5908 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5909 /* For noninterleaved scan, always one block per MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5910 compptr.MCU_width = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5911 compptr.MCU_height = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5912 compptr.MCU_blocks = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5913 compptr.MCU_sample_width = compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5914 compptr.last_col_width = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5915 /* For noninterleaved scans, it is convenient to define last_row_height |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5916 * as the number of block rows present in the last iMCU row. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5917 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5918 tmp = (compptr.height_in_blocks % compptr.v_samp_factor); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5919 if (tmp is 0) tmp = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5920 compptr.last_row_height = tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5921 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5922 /* Prepare array describing MCU composition */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5923 cinfo.blocks_in_MCU = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5924 cinfo.MCU_membership[0] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5925 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5926 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5927 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5928 /* Interleaved (multi-component) scan */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5929 if (cinfo.comps_in_scan <= 0 || cinfo.comps_in_scan > MAX_COMPS_IN_SCAN) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5930 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5931 // ERREXIT2(cinfo, JERR_COMPONENT_COUNT, cinfo.comps_in_scan, MAX_COMPS_IN_SCAN); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5932 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5933 /* Overall image size in MCUs */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5934 cinfo.MCUs_per_row = cast(int)jdiv_round_up( cinfo.image_width, (cinfo.max_h_samp_factor*DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5935 cinfo.MCU_rows_in_scan = cast(int)jdiv_round_up( cinfo.image_height, (cinfo.max_v_samp_factor*DCTSIZE)); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5936 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5937 cinfo.blocks_in_MCU = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5938 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5939 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5940 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5941 /* Sampling factors give # of blocks of component in each MCU */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5942 compptr.MCU_width = compptr.h_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5943 compptr.MCU_height = compptr.v_samp_factor; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5944 compptr.MCU_blocks = compptr.MCU_width * compptr.MCU_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5945 compptr.MCU_sample_width = compptr.MCU_width * compptr.DCT_scaled_size; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5946 /* Figure number of non-dummy blocks in last MCU column & row */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5947 tmp = (compptr.width_in_blocks % compptr.MCU_width); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5948 if (tmp is 0) tmp = compptr.MCU_width; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5949 compptr.last_col_width = tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5950 tmp = (compptr.height_in_blocks % compptr.MCU_height); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5951 if (tmp is 0) tmp = compptr.MCU_height; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5952 compptr.last_row_height = tmp; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5953 /* Prepare array describing MCU composition */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5954 mcublks = compptr.MCU_blocks; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5955 if (cinfo.blocks_in_MCU + mcublks > D_MAX_BLOCKS_IN_MCU) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5956 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5957 // ERREXIT(cinfo, JERR_BAD_MCU_SIZE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5958 while (mcublks-- > 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5959 cinfo.MCU_membership[cinfo.blocks_in_MCU++] = ci; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5960 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5961 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5962 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5963 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5964 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5965 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5966 static void latch_quant_tables (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5967 int ci, qtblno; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5968 jpeg_component_info compptr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5969 JQUANT_TBL qtbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5970 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5971 for (ci = 0; ci < cinfo.comps_in_scan; ci++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5972 compptr = cinfo.cur_comp_info[ci]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5973 /* No work if we already saved Q-table for this component */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5974 if (compptr.quant_table !is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5975 continue; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5976 /* Make sure specified quantization table is present */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5977 qtblno = compptr.quant_tbl_no; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5978 if (qtblno < 0 || qtblno >= NUM_QUANT_TBLS || cinfo.quant_tbl_ptrs[qtblno] is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5979 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5980 // ERREXIT1(cinfo, JERR_NO_QUANT_TABLE, qtblno); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5981 /* OK, save away the quantization table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5982 qtbl = new JQUANT_TBL(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5983 System.arraycopy(cinfo.quant_tbl_ptrs[qtblno].quantval, 0, qtbl.quantval, 0, qtbl.quantval.length); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5984 qtbl.sent_table = cinfo.quant_tbl_ptrs[qtblno].sent_table; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5985 compptr.quant_table = qtbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5986 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5987 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5988 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5989 static void jpeg_make_d_derived_tbl (jpeg_decompress_struct cinfo, bool isDC, int tblno, d_derived_tbl dtbl) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5990 JHUFF_TBL htbl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5991 int p, i = 0, l, si, numsymbols; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5992 int lookbits, ctr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5993 byte[] huffsize = new byte[257]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5994 int[] huffcode = new int[257]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5995 int code; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5996 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5997 /* Note that huffsize[] and huffcode[] are filled in code-length order, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5998 * paralleling the order of the symbols themselves in htbl.huffval[]. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
5999 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6000 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6001 /* Find the input Huffman table */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6002 if (tblno < 0 || tblno >= NUM_HUFF_TBLS) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6003 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6004 // ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6005 htbl = isDC ? cinfo.dc_huff_tbl_ptrs[tblno] : cinfo.ac_huff_tbl_ptrs[tblno]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6006 if (htbl is null) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6007 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6008 // ERREXIT1(cinfo, JERR_NO_HUFF_TABLE, tblno); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6009 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6010 /* Allocate a workspace if we haven't already done so. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6011 dtbl.pub = htbl; /* fill in back link */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6012 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6013 /* Figure C.1: make table of Huffman code length for each symbol */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6014 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6015 p = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6016 for (l = 1; l <= 16; l++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6017 i = htbl.bits[l] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6018 if (i < 0 || p + i > 256) /* protect against table overrun */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6019 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6020 // ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6021 while (i-- !is 0) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6022 huffsize[p++] = cast(byte) l; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6023 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6024 huffsize[p] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6025 numsymbols = p; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6026 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6027 /* Figure C.2: generate the codes themselves */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6028 /* We also validate that the counts represent a legal Huffman code tree. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6029 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6030 code = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6031 si = huffsize[0]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6032 p = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6033 while ( huffsize[p] !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6034 while (( huffsize[p]) is si) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6035 huffcode[p++] = code; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6036 code++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6037 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6038 /* code is now 1 more than the last code used for codelength si; but |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6039 * it must still fit in si bits, since no code is allowed to be all ones. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6040 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6041 if (( code) >= (( 1) << si)) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6042 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6043 // ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6044 code <<= 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6045 si++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6046 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6047 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6048 /* Figure F.15: generate decoding tables for bit-sequential decoding */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6049 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6050 p = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6051 for (l = 1; l <= 16; l++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6052 if ((htbl.bits[l] & 0xFF) !is 0) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6053 /* valoffset[l] = huffval[] index of 1st symbol of code length l, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6054 * minus the minimum code of length l |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6055 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6056 dtbl.valoffset[l] = p - huffcode[p]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6057 p += (htbl.bits[l] & 0xFF); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6058 dtbl.maxcode[l] = huffcode[p-1]; /* maximum code of length l */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6059 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6060 dtbl.maxcode[l] = -1; /* -1 if no codes of this length */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6061 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6062 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6063 dtbl.maxcode[17] = 0xFFFFF; /* ensures jpeg_huff_decode terminates */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6064 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6065 /* Compute lookahead tables to speed up decoding. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6066 * First we set all the table entries to 0, indicating "too long"; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6067 * then we iterate through the Huffman codes that are short enough and |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6068 * fill in all the entries that correspond to bit sequences starting |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6069 * with that code. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6070 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6071 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6072 for (int j = 0; j < dtbl.look_nbits.length; j++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6073 dtbl.look_nbits[j] = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6074 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6075 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6076 p = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6077 for (l = 1; l <= HUFF_LOOKAHEAD; l++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6078 for (i = 1; i <= (htbl.bits[l] & 0xFF); i++, p++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6079 /* l = current code's length, p = its index in huffcode[] & huffval[]. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6080 /* Generate left-justified code followed by all possible bit sequences */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6081 lookbits = huffcode[p] << (HUFF_LOOKAHEAD-l); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6082 for (ctr = 1 << (HUFF_LOOKAHEAD-l); ctr > 0; ctr--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6083 dtbl.look_nbits[lookbits] = l; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6084 dtbl.look_sym[lookbits] = htbl.huffval[p]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6085 lookbits++; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6086 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6087 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6088 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6089 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6090 /* Validate symbols as being reasonable. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6091 * For AC tables, we make no check, but accept all byte values 0..255. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6092 * For DC tables, we require the symbols to be in range 0..15. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6093 * (Tighter bounds could be applied depending on the data depth and mode, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6094 * but this is sufficient to ensure safe decoding.) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6095 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6096 if (isDC) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6097 for (i = 0; i < numsymbols; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6098 int sym = htbl.huffval[i] & 0xFF; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6099 if (sym < 0 || sym > 15) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6100 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6101 // ERREXIT(cinfo, JERR_BAD_HUFF_TABLE); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6102 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6103 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6104 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6105 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6106 static void start_input_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6107 per_scan_setup(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6108 latch_quant_tables(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6109 cinfo.entropy.start_pass(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6110 cinfo.coef.start_input_pass (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6111 cinfo.inputctl.consume_input = COEF_CONSUME_INPUT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6112 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6113 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6114 static void finish_input_pass (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6115 cinfo.inputctl.consume_input = INPUT_CONSUME_INPUT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6116 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6117 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6118 static int consume_markers (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6119 jpeg_input_controller inputctl = cinfo.inputctl; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6120 int val; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6121 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6122 if (inputctl.eoi_reached) /* After hitting EOI, read no further */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6123 return JPEG_REACHED_EOI; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6124 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6125 val = read_markers (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6126 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6127 switch (val) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6128 case JPEG_REACHED_SOS: /* Found SOS */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6129 if (inputctl.inheaders) { /* 1st SOS */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6130 initial_setup(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6131 inputctl.inheaders = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6132 /* Note: start_input_pass must be called by jdmaster.c |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6133 * before any more input can be consumed. jdapimin.c is |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6134 * responsible for enforcing this sequencing. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6135 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6136 } else { /* 2nd or later SOS marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6137 if (! inputctl.has_multiple_scans) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6138 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6139 // ERREXIT(cinfo, JERR_EOI_EXPECTED); /* Oops, I wasn't expecting this! */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6140 start_input_pass(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6141 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6142 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6143 case JPEG_REACHED_EOI: /* Found EOI */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6144 inputctl.eoi_reached = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6145 if (inputctl.inheaders) { /* Tables-only datastream, apparently */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6146 if (cinfo.marker.saw_SOF) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6147 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6148 // ERREXIT(cinfo, JERR_SOF_NO_SOS); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6149 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6150 /* Prevent infinite loop in coef ctlr's decompress_data routine |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6151 * if user set output_scan_number larger than number of scans. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6152 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6153 if (cinfo.output_scan_number > cinfo.input_scan_number) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6154 cinfo.output_scan_number = cinfo.input_scan_number; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6155 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6156 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6157 case JPEG_SUSPENDED: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6158 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6159 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6160 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6161 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6162 return val; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6163 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6164 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6165 static void default_decompress_parms (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6166 /* Guess the input colorspace, and set output colorspace accordingly. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6167 /* (Wish JPEG committee had provided a real way to specify this...) */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6168 /* Note application may override our guesses. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6169 switch (cinfo.num_components) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6170 case 1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6171 cinfo.jpeg_color_space = JCS_GRAYSCALE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6172 cinfo.out_color_space = JCS_GRAYSCALE; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6173 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6174 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6175 case 3: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6176 if (cinfo.saw_JFIF_marker) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6177 cinfo.jpeg_color_space = JCS_YCbCr; /* JFIF implies YCbCr */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6178 } else if (cinfo.saw_Adobe_marker) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6179 switch (cinfo.Adobe_transform) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6180 case 0: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6181 cinfo.jpeg_color_space = JCS_RGB; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6182 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6183 case 1: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6184 cinfo.jpeg_color_space = JCS_YCbCr; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6185 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6186 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6187 // WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo.Adobe_transform); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6188 cinfo.jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6189 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6190 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6191 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6192 /* Saw no special markers, try to guess from the component IDs */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6193 int cid0 = cinfo.comp_info[0].component_id; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6194 int cid1 = cinfo.comp_info[1].component_id; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6195 int cid2 = cinfo.comp_info[2].component_id; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6196 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6197 if (cid0 is 1 && cid1 is 2 && cid2 is 3) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6198 cinfo.jpeg_color_space = JCS_YCbCr; /* assume JFIF w/out marker */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6199 else if (cid0 is 82 && cid1 is 71 && cid2 is 66) |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6200 cinfo.jpeg_color_space = JCS_RGB; /* ASCII 'R', 'G', 'B' */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6201 else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6202 // TRACEMS3(cinfo, 1, JTRC_UNKNOWN_IDS, cid0, cid1, cid2); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6203 cinfo.jpeg_color_space = JCS_YCbCr; /* assume it's YCbCr */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6204 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6205 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6206 /* Always guess RGB is proper output colorspace. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6207 cinfo.out_color_space = JCS_RGB; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6208 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6209 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6210 case 4: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6211 if (cinfo.saw_Adobe_marker) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6212 switch (cinfo.Adobe_transform) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6213 case 0: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6214 cinfo.jpeg_color_space = JCS_CMYK; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6215 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6216 case 2: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6217 cinfo.jpeg_color_space = JCS_YCCK; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6218 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6219 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6220 // WARNMS1(cinfo, JWRN_ADOBE_XFORM, cinfo.Adobe_transform); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6221 cinfo.jpeg_color_space = JCS_YCCK; /* assume it's YCCK */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6222 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6223 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6224 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6225 /* No special markers, assume straight CMYK. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6226 cinfo.jpeg_color_space = JCS_CMYK; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6227 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6228 cinfo.out_color_space = JCS_CMYK; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6229 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6230 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6231 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6232 cinfo.jpeg_color_space = JCS_UNKNOWN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6233 cinfo.out_color_space = JCS_UNKNOWN; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6234 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6235 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6236 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6237 /* Set defaults for other decompression parameters. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6238 cinfo.scale_num = 1; /* 1:1 scaling */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6239 cinfo.scale_denom = 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6240 cinfo.output_gamma = 1.0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6241 cinfo.buffered_image = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6242 cinfo.raw_data_out = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6243 cinfo.dct_method = JDCT_DEFAULT; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6244 cinfo.do_fancy_upsampling = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6245 cinfo.do_block_smoothing = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6246 cinfo.quantize_colors = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6247 /* We set these in case application only sets quantize_colors. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6248 cinfo.dither_mode = JDITHER_FS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6249 cinfo.two_pass_quantize = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6250 cinfo.desired_number_of_colors = 256; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6251 cinfo.colormap = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6252 /* Initialize for no mode change in buffered-image mode. */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6253 cinfo.enable_1pass_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6254 cinfo.enable_external_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6255 cinfo.enable_2pass_quant = false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6256 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6257 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6258 static void init_source(jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6259 cinfo.buffer = new byte[INPUT_BUFFER_SIZE]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6260 cinfo.bytes_in_buffer = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6261 cinfo.bytes_offset = 0; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6262 cinfo.start_of_file = true; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6263 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6264 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6265 static int jpeg_consume_input (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6266 int retcode = JPEG_SUSPENDED; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6267 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6268 /* NB: every possible DSTATE value should be listed in this switch */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6269 switch (cinfo.global_state) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6270 case DSTATE_START: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6271 /* Start-of-datastream actions: reset appropriate modules */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6272 reset_input_controller(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6273 /* Initialize application's data source module */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6274 init_source (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6275 cinfo.global_state = DSTATE_INHEADER; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6276 /*FALLTHROUGH*/ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6277 case DSTATE_INHEADER: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6278 retcode = consume_input(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6279 if (retcode is JPEG_REACHED_SOS) { /* Found SOS, prepare to decompress */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6280 /* Set up default parameters based on header data */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6281 default_decompress_parms(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6282 /* Set global state: ready for start_decompress */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6283 cinfo.global_state = DSTATE_READY; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6284 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6285 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6286 case DSTATE_READY: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6287 /* Can't advance past first SOS until start_decompress is called */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6288 retcode = JPEG_REACHED_SOS; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6289 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6290 case DSTATE_PRELOAD: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6291 case DSTATE_PRESCAN: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6292 case DSTATE_SCANNING: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6293 case DSTATE_RAW_OK: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6294 case DSTATE_BUFIMAGE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6295 case DSTATE_BUFPOST: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6296 case DSTATE_STOPPING: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6297 retcode = consume_input (cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6298 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6299 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6300 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6301 // ERREXIT1(cinfo, JERR_BAD_STATE, cinfo.global_state); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6302 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6303 return retcode; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6304 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6305 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6306 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6307 static void jpeg_abort (jpeg_decompress_struct cinfo) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6308 // int pool; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6309 // |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6310 // /* Releasing pools in reverse order might help avoid fragmentation |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6311 // * with some (brain-damaged) malloc libraries. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6312 // */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6313 // for (pool = JPOOL_NUMPOOLS-1; pool > JPOOL_PERMANENT; pool--) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6314 // (*cinfo.mem.free_pool) (cinfo, pool); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6315 // } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6316 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6317 /* Reset overall state for possible reuse of object */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6318 if (cinfo.is_decompressor) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6319 cinfo.global_state = DSTATE_START; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6320 /* Try to keep application from accessing now-deleted marker list. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6321 * A bit kludgy to do it here, but this is the most central place. |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6322 */ |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6323 // ((j_decompress_ptr) cinfo).marker_list = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6324 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6325 cinfo.global_state = CSTATE_START; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6326 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6327 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6328 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6329 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6330 static bool isFileFormat(LEDataInputStream stream) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6331 try { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6332 byte[] buffer = new byte[2]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6333 stream.read(buffer); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6334 stream.unread(buffer); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6335 return (buffer[0] & 0xFF) is 0xFF && (buffer[1] & 0xFF) is M_SOI; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6336 } catch (Exception e) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6337 return false; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6338 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6339 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6340 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6341 static ImageData[] loadFromByteStream(InputStream inputStream, ImageLoader loader) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6342 jpeg_decompress_struct cinfo = new jpeg_decompress_struct(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6343 cinfo.inputStream = inputStream; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6344 jpeg_create_decompress(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6345 jpeg_read_header(cinfo, true); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6346 cinfo.buffered_image = cinfo.progressive_mode && loader.hasListeners(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6347 jpeg_start_decompress(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6348 PaletteData palette = null; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6349 switch (cinfo.out_color_space) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6350 case JCS_RGB: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6351 palette = new PaletteData(0xFF, 0xFF00, 0xFF0000); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6352 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6353 case JCS_GRAYSCALE: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6354 RGB[] colors = new RGB[256]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6355 for (int i = 0; i < colors.length; i++) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6356 colors[i] = new RGB(i, i, i); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6357 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6358 palette = new PaletteData(colors); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6359 break; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6360 default: |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6361 error(); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6362 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6363 int scanlinePad = 4; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6364 int row_stride = (((cinfo.output_width * cinfo.out_color_components * 8 + 7) / 8) + (scanlinePad - 1)) / scanlinePad * scanlinePad; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6365 byte[][] buffer = new byte[][]( 1, row_stride ); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6366 byte[] data = new byte[row_stride * cinfo.output_height]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6367 ImageData imageData = ImageData.internal_new( |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6368 cinfo.output_width, cinfo.output_height, palette.isDirect ? 24 : 8, palette, scanlinePad, data, |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6369 0, null, null, -1, -1, SWT.IMAGE_JPEG, 0, 0, 0, 0); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6370 if (cinfo.buffered_image) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6371 bool done; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6372 do { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6373 int incrementCount = cinfo.input_scan_number - 1; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6374 jpeg_start_output(cinfo, cinfo.input_scan_number); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6375 while (cinfo.output_scanline < cinfo.output_height) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6376 int offset = row_stride * cinfo.output_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6377 jpeg_read_scanlines(cinfo, buffer, 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6378 System.arraycopy(buffer[0], 0, data, offset, row_stride); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6379 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6380 jpeg_finish_output(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6381 loader.notifyListeners(new ImageLoaderEvent(loader, cast(ImageData)imageData.clone(), incrementCount, done = jpeg_input_complete(cinfo))); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6382 } while (!done); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6383 } else { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6384 while (cinfo.output_scanline < cinfo.output_height) { |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6385 int offset = row_stride * cinfo.output_scanline; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6386 jpeg_read_scanlines(cinfo, buffer, 1); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6387 System.arraycopy(buffer[0], 0, data, offset, row_stride); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6388 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6389 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6390 jpeg_finish_decompress(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6391 jpeg_destroy_decompress(cinfo); |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6392 return [imageData]; |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6393 } |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6394 |
6dd524f61e62
add dwt win and basic java stuff
Frank Benoit <benoit@tionex.de>
parents:
diff
changeset
|
6395 } |