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annotate dwt/internal/image/TIFFDirectory.d @ 197:184ab53b7785

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Changes and fixes for jface
author Frank Benoit <benoit@tionex.de>
date Thu, 10 Apr 2008 11:19:49 +0200
parents 92c102dd64a3
children 36f5cb12e1a2
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92c102dd64a3 Added all widgets modules as dummy. Most modules of accessible are equal to the linux version, except Accessible.
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1 /*******************************************************************************
2
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2 * Copyright (c) 2000, 2005 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 dwt.internal.image.TIFFDirectory;
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14
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15 import dwt.internal.image.TIFFRandomFileAccess;
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16 import dwt.internal.image.TIFFModifiedHuffmanCodec;
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17 import dwt.internal.image.LEDataOutputStream;
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18 import dwt.graphics.ImageData;
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19 import dwt.graphics.ImageLoaderEvent;
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20 import dwt.graphics.ImageLoader;
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21 import dwt.graphics.PaletteData;
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22 import dwt.graphics.RGB;
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23 import dwt.DWT;
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184ab53b7785 Changes and fixes for jface
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24 import dwt.dwthelper.utils;
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25 import dwt.dwthelper.System;
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26
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27 final class TIFFDirectory {
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28
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29 TIFFRandomFileAccess file;
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30 bool isLittleEndian;
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31 ImageLoader loader;
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32 int depth;
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33
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34 /* Directory fields */
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35 int imageWidth;
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36 int imageLength;
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37 int[] bitsPerSample;
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38 int compression;
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39 int photometricInterpretation;
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40 int[] stripOffsets;
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41 int samplesPerPixel;
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42 int rowsPerStrip;
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43 int[] stripByteCounts;
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44 int t4Options;
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45 int colorMapOffset;
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46
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47 /* Encoder fields */
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48 ImageData image;
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49 LEDataOutputStream ostr;
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50
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51 static const int NO_VALUE = -1;
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52
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53 static const short TAG_ImageWidth = 256;
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54 static const short TAG_ImageLength = 257;
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55 static const short TAG_BitsPerSample = 258;
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56 static const short TAG_Compression = 259;
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57 static const short TAG_PhotometricInterpretation = 262;
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58 static const short TAG_StripOffsets = 273;
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59 static const short TAG_SamplesPerPixel = 277;
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60 static const short TAG_RowsPerStrip = 278;
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61 static const short TAG_StripByteCounts = 279;
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62 static const short TAG_XResolution = 282;
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63 static const short TAG_YResolution = 283;
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64 static const short TAG_T4Options = 292;
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65 static const short TAG_ResolutionUnit = 296;
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66 static const short TAG_ColorMap = 320;
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67
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68 static const int TYPE_BYTE = 1;
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69 static const int TYPE_ASCII = 2;
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70 static const int TYPE_SHORT = 3;
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71 static const int TYPE_LONG = 4;
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72 static const int TYPE_RATIONAL = 5;
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73
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74 /* Different compression schemes */
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75 static const int COMPRESSION_NONE = 1;
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76 static const int COMPRESSION_CCITT_3_1 = 2;
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77 static const int COMPRESSION_PACKBITS = 32773;
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78
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79 static const int IFD_ENTRY_SIZE = 12;
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80
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81 public this(TIFFRandomFileAccess file, bool isLittleEndian, ImageLoader loader) {
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82 this.file = file;
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83 this.isLittleEndian = isLittleEndian;
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84 this.loader = loader;
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85 }
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86
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87 public this(ImageData image) {
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88 this.image = image;
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89 }
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90
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91 /* PackBits decoder */
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92 int decodePackBits(byte[] src, byte[] dest, int offsetDest) {
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93 int destIndex = offsetDest;
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94 int srcIndex = 0;
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95 while (srcIndex < src.length) {
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96 byte n = src[srcIndex];
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97 if (0 <= n && n <= 127) {
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98 /* Copy next n+1 bytes literally */
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99 System.arraycopy(src, ++srcIndex, dest, destIndex, n + 1);
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100 srcIndex += n + 1;
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101 destIndex += n + 1;
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102 } else if (-127 <= n && n <= -1) {
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103 /* Copy next byte -n+1 times */
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104 byte value = src[++srcIndex];
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105 for (int j = 0; j < -n + 1; j++) {
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106 dest[destIndex++] = value;
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107 }
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108 srcIndex++;
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109 } else {
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110 /* Noop when n is -128 */
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111 srcIndex++;
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112 }
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113 }
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114 /* Number of bytes copied */
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115 return destIndex - offsetDest;
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116 }
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117
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118 int getEntryValue(int type, byte[] buffer, int index) {
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119 return toInt(buffer, index + 8, type);
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120 }
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121
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122 void getEntryValue(int type, byte[] buffer, int index, int[] values) {
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123 int start = index + 8;
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124 int size;
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125 int offset = toInt(buffer, start, TYPE_LONG);
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126 switch (type) {
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127 case TYPE_SHORT: size = 2; break;
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128 case TYPE_LONG: size = 4; break;
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129 case TYPE_RATIONAL: size = 8; break;
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130 case TYPE_ASCII:
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131 case TYPE_BYTE: size = 1; break;
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132 default: DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT); return;
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133 }
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134 if (values.length * size > 4) {
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135 buffer = new byte[values.length * size];
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136 file.seek(offset);
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137 file.read(buffer);
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138 start = 0;
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139 }
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140 for (int i = 0; i < values.length; i++) {
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141 values[i] = toInt(buffer, start + i * size, type);
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142 }
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143 }
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144
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145 void decodePixels(ImageData image) {
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146 /* Each row is byte aligned */
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147 byte[] imageData = new byte[(imageWidth * depth + 7) / 8 * imageLength];
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148 image.data = imageData;
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149 int destIndex = 0;
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150 int length = stripOffsets.length;
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151 for (int i = 0; i < length; i++) {
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152 /* Read a strip */
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153 byte[] data = new byte[](stripByteCounts[i]);
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154 file.seek(stripOffsets[i]);
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155 file.read(data);
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156 if (compression is COMPRESSION_NONE) {
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157 System.arraycopy(data, 0, imageData, destIndex, data.length);
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158 destIndex += data.length;
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159 } else if (compression is COMPRESSION_PACKBITS) {
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160 destIndex += decodePackBits(data, imageData, destIndex);
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161 } else if (compression is COMPRESSION_CCITT_3_1 || compression is 3) {
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162 TIFFModifiedHuffmanCodec codec = new TIFFModifiedHuffmanCodec();
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163 int nRows = rowsPerStrip;
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164 if (i is length -1) {
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165 int n = imageLength % rowsPerStrip;
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166 if (n !is 0) nRows = n;
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167 }
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168 destIndex += codec.decode(data, imageData, destIndex, imageWidth, nRows);
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169 }
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170 if (loader.hasListeners()) {
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171 loader.notifyListeners(new ImageLoaderEvent(loader, image, i, i is length - 1));
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172 }
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173 }
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174 }
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175
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176 PaletteData getColorMap() {
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177 int numColors = 1 << bitsPerSample[0];
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178 /* R, G, B entries are 16 bit wide (2 bytes) */
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179 int numBytes = 3 * 2 * numColors;
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180 byte[] buffer = new byte[numBytes];
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181 file.seek(colorMapOffset);
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182 file.read(buffer);
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183 RGB[] colors = new RGB[numColors];
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184 /**
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185 * DWT does not support 16-bit depth color formats.
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186 * Convert the 16-bit data to 8-bit data.
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187 * The correct way to do this is to multiply each
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188 * 16 bit value by the value:
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189 * (2^8 - 1) / (2^16 - 1).
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190 * The fast way to do this is just to drop the low
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191 * byte of the 16-bit value.
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192 */
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193 int offset = isLittleEndian ? 1 : 0;
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194 int startG = 2 * numColors;
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195 int startB = startG + 2 * numColors;
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196 for (int i = 0; i < numColors; i++) {
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197 int r = buffer[offset] & 0xFF;
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198 int g = buffer[startG + offset] & 0xFF;
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199 int b = buffer[startB + offset] & 0xFF;
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200 colors[i] = new RGB(r, g, b);
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201 offset += 2;
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202 }
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203 return new PaletteData(colors);
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204 }
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205
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206 PaletteData getGrayPalette() {
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207 int numColors = 1 << bitsPerSample[0];
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208 RGB[] rgbs = new RGB[numColors];
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209 for (int i = 0; i < numColors; i++) {
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210 int value = i * 0xFF / (numColors - 1);
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211 if (photometricInterpretation is 0) value = 0xFF - value;
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212 rgbs[i] = new RGB(value, value, value);
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213 }
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214 return new PaletteData(rgbs);
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215 }
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216
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217 PaletteData getRGBPalette(int bitsR, int bitsG, int bitsB) {
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218 int blueMask = 0;
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219 for (int i = 0; i < bitsB; i++) {
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220 blueMask |= 1 << i;
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221 }
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222 int greenMask = 0;
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223 for (int i = bitsB; i < bitsB + bitsG; i++) {
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224 greenMask |= 1 << i;
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225 }
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226 int redMask = 0;
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227 for (int i = bitsB + bitsG; i < bitsB + bitsG + bitsR; i++) {
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228 redMask |= 1 << i;
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229 }
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230 return new PaletteData(redMask, greenMask, blueMask);
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231 }
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232
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233 int formatStrips(int rowByteSize, int nbrRows, byte[] data, int maxStripByteSize, int offsetPostIFD, int extraBytes, int[][] strips) {
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234 /*
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235 * Calculate the nbr of required strips given the following requirements:
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236 * - each strip should, if possible, not be greater than maxStripByteSize
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237 * - each strip should contain 1 or more entire rows
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238 *
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239 * Format the strip fields arrays so that the image data is stored in one
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240 * contiguous block. This block is stored after the IFD and after any tag
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241 * info described in the IFD.
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242 */
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243 int n, nbrRowsPerStrip;
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244 if (rowByteSize > maxStripByteSize) {
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245 /* Each strip contains 1 row */
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246 n = data.length / rowByteSize;
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247 nbrRowsPerStrip = 1;
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248 } else {
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249 int nbr = (data.length + maxStripByteSize - 1) / maxStripByteSize;
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250 nbrRowsPerStrip = nbrRows / nbr;
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251 n = (nbrRows + nbrRowsPerStrip - 1) / nbrRowsPerStrip;
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252 }
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253 int stripByteSize = rowByteSize * nbrRowsPerStrip;
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254
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255 int[] offsets = new int[n];
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256 int[] counts = new int[n];
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257 /*
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258 * Nbr of bytes between the end of the IFD directory and the start of
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259 * the image data. Keep space for at least the offsets and counts
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260 * data, each field being TYPE_LONG (4 bytes). If other tags require
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261 * space between the IFD and the image block, use the extraBytes
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262 * parameter.
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263 * If there is only one strip, the offsets and counts data is stored
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264 * directly in the IFD and we need not reserve space for it.
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265 */
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266 int postIFDData = n is 1 ? 0 : n * 2 * 4;
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267 int startOffset = offsetPostIFD + extraBytes + postIFDData; /* offset of image data */
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268
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269 int offset = startOffset;
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270 for (int i = 0; i < n; i++) {
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271 /*
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272 * Store all strips sequentially to allow us
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273 * to copy all pixels in one contiguous area.
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274 */
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275 offsets[i] = offset;
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276 counts[i] = stripByteSize;
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277 offset += stripByteSize;
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278 }
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279 /* The last strip may contain fewer rows */
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280 int mod = data.length % stripByteSize;
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281 if (mod !is 0) counts[counts.length - 1] = mod;
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282
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283 strips[0] = offsets;
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284 strips[1] = counts;
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285 return nbrRowsPerStrip;
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286 }
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287
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288 int[] formatColorMap(RGB[] rgbs) {
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289 /*
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290 * In a TIFF ColorMap, all red come first, followed by
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291 * green and blue. All values must be converted from
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292 * 8 bit to 16 bit.
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293 */
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294 int[] colorMap = new int[rgbs.length * 3];
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diff changeset
295 int offsetGreen = rgbs.length;
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296 int offsetBlue = rgbs.length * 2;
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297 for (int i = 0; i < rgbs.length; i++) {
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298 colorMap[i] = rgbs[i].red << 8 | rgbs[i].red;
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299 colorMap[i + offsetGreen] = rgbs[i].green << 8 | rgbs[i].green;
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300 colorMap[i + offsetBlue] = rgbs[i].blue << 8 | rgbs[i].blue;
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diff changeset
301 }
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diff changeset
302 return colorMap;
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diff changeset
303 }
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diff changeset
304
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diff changeset
305 void parseEntries(byte[] buffer) {
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diff changeset
306 for (int offset = 0; offset < buffer.length; offset += IFD_ENTRY_SIZE) {
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parents:
diff changeset
307 int tag = toInt(buffer, offset, TYPE_SHORT);
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diff changeset
308 int type = toInt(buffer, offset + 2, TYPE_SHORT);
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diff changeset
309 int count = toInt(buffer, offset + 4, TYPE_LONG);
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parents:
diff changeset
310 switch (tag) {
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diff changeset
311 case TAG_ImageWidth: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
312 imageWidth = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
313 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
314 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
315 case TAG_ImageLength: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
316 imageLength = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
317 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
318 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
319 case TAG_BitsPerSample: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
320 if (type !is TYPE_SHORT) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
321 bitsPerSample = new int[count];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
322 getEntryValue(type, buffer, offset, bitsPerSample);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
323 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
324 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
325 case TAG_Compression: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
326 compression = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
327 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
328 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
329 case TAG_PhotometricInterpretation: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
330 photometricInterpretation = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
331 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
332 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
333 case TAG_StripOffsets: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
334 if (type !is TYPE_LONG && type !is TYPE_SHORT) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
335 stripOffsets = new int[count];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
336 getEntryValue(type, buffer, offset, stripOffsets);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
337 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
338 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
339 case TAG_SamplesPerPixel: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
340 if (type !is TYPE_SHORT) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
341 samplesPerPixel = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
342 /* Only the basic 1 and 3 values are supported */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
343 if (samplesPerPixel !is 1 && samplesPerPixel !is 3) DWT.error(DWT.ERROR_UNSUPPORTED_DEPTH);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
344 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
345 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
346 case TAG_RowsPerStrip: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
347 rowsPerStrip = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
348 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
349 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
350 case TAG_StripByteCounts: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
351 stripByteCounts = new int[count];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
352 getEntryValue(type, buffer, offset, stripByteCounts);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
353 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
354 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
355 case TAG_XResolution: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
356 /* Ignored */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
357 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
358 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
359 case TAG_YResolution: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
360 /* Ignored */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
361 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
362 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
363 case TAG_T4Options: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
364 if (type !is TYPE_LONG) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
365 t4Options = getEntryValue(type, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
366 if ((t4Options & 0x1) is 1) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
367 /* 2-dimensional coding is not supported */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
368 DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
369 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
370 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
371 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
372 case TAG_ResolutionUnit: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
373 /* Ignored */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
374 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
375 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
376 case TAG_ColorMap: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
377 if (type !is TYPE_SHORT) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
378 /* Get the offset of the colorMap (use TYPE_LONG) */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
379 colorMapOffset = getEntryValue(TYPE_LONG, buffer, offset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
380 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
381 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
382 default:
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
383 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
384 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
385 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
386
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
387 public ImageData read() {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
388 /* Set TIFF default values */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
389 bitsPerSample = [1];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
390 colorMapOffset = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
391 compression = 1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
392 imageLength = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
393 imageWidth = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
394 photometricInterpretation = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
395 rowsPerStrip = Integer.MAX_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
396 samplesPerPixel = 1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
397 stripByteCounts = null;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
398 stripOffsets = null;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
399
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
400 byte[] buffer = new byte[2];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
401 file.read(buffer);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
402 int numberEntries = toInt(buffer, 0, TYPE_SHORT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
403 buffer = new byte[IFD_ENTRY_SIZE * numberEntries];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
404 file.read(buffer);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
405 parseEntries(buffer);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
406
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
407 PaletteData palette = null;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
408 depth = 0;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
409 switch (photometricInterpretation) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
410 case 0:
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
411 case 1: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
412 /* Bilevel or Grayscale image */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
413 palette = getGrayPalette();
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
414 depth = bitsPerSample[0];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
415 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
416 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
417 case 2: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
418 /* RGB image */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
419 if (colorMapOffset !is NO_VALUE) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
420 /* SamplesPerPixel 3 is the only value supported */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
421 palette = getRGBPalette(bitsPerSample[0], bitsPerSample[1], bitsPerSample[2]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
422 depth = bitsPerSample[0] + bitsPerSample[1] + bitsPerSample[2];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
423 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
424 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
425 case 3: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
426 /* Palette Color image */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
427 if (colorMapOffset is NO_VALUE) DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
428 palette = getColorMap();
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
429 depth = bitsPerSample[0];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
430 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
431 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
432 default: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
433 DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
434 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
435 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
436
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
437 ImageData image = ImageData.internal_new(
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
438 imageWidth,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
439 imageLength,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
440 depth,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
441 palette,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
442 1,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
443 null,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
444 0,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
445 null,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
446 null,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
447 -1,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
448 -1,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
449 DWT.IMAGE_TIFF,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
450 0,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
451 0,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
452 0,
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
453 0);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
454 decodePixels(image);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
455 return image;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
456 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
457
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
458 int toInt(byte[] buffer, int i, int type) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
459 if (type is TYPE_LONG) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
460 return isLittleEndian ?
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
461 (buffer[i] & 0xFF) | ((buffer[i + 1] & 0xFF) << 8) | ((buffer[i + 2] & 0xFF) << 16) | ((buffer[i + 3] & 0xFF) << 24) :
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
462 (buffer[i + 3] & 0xFF) | ((buffer[i + 2] & 0xFF) << 8) | ((buffer[i + 1] & 0xFF) << 16) | ((buffer[i] & 0xFF) << 24);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
463 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
464 if (type is TYPE_SHORT) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
465 return isLittleEndian ?
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
466 (buffer[i] & 0xFF) | ((buffer[i + 1] & 0xFF) << 8) :
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
467 (buffer[i + 1] & 0xFF) | ((buffer[i] & 0xFF) << 8);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
468 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
469 /* Invalid type */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
470 DWT.error(DWT.ERROR_INVALID_IMAGE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
471 return -1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
472 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
473
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
474 void write(int photometricInterpretation) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
475 bool isRGB = photometricInterpretation is 2;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
476 bool isColorMap = photometricInterpretation is 3;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
477 bool isBiLevel = photometricInterpretation is 0 || photometricInterpretation is 1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
478
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
479 int imageWidth = image.width;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
480 int imageLength = image.height;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
481 int rowByteSize = image.bytesPerLine;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
482
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
483 int numberEntries = isBiLevel ? 9 : 11;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
484 int lengthDirectory = 2 + 12 * numberEntries + 4;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
485 /* Offset following the header and the directory */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
486 int nextOffset = 8 + lengthDirectory;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
487
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
488 /* Extra space used by XResolution and YResolution values */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
489 int extraBytes = 16;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
490
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
491 int[] colorMap = null;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
492 if (isColorMap) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
493 PaletteData palette = image.palette;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
494 RGB[] rgbs = palette.getRGBs();
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
495 colorMap = formatColorMap(rgbs);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
496 /* The number of entries of the Color Map must match the bitsPerSample field */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
497 if (colorMap.length !is 3 * 1 << image.depth) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
498 /* Extra space used by ColorMap values */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
499 extraBytes += colorMap.length * 2;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
500 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
501 if (isRGB) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
502 /* Extra space used by BitsPerSample values */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
503 extraBytes += 6;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
504 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
505 /* TIFF recommends storing the data in strips of no more than 8 Ko */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
506 byte[] data = image.data;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
507 int[][] strips = new int[][](2);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
508 int nbrRowsPerStrip = formatStrips(rowByteSize, imageLength, data, 8192, nextOffset, extraBytes, strips);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
509 int[] stripOffsets = strips[0];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
510 int[] stripByteCounts = strips[1];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
511
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
512 int bitsPerSampleOffset = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
513 if (isRGB) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
514 bitsPerSampleOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
515 nextOffset += 6;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
516 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
517 int stripOffsetsOffset = NO_VALUE, stripByteCountsOffset = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
518 int xResolutionOffset, yResolutionOffset, colorMapOffset = NO_VALUE;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
519 int cnt = stripOffsets.length;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
520 if (cnt > 1) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
521 stripOffsetsOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
522 nextOffset += 4 * cnt;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
523 stripByteCountsOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
524 nextOffset += 4 * cnt;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
525 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
526 xResolutionOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
527 nextOffset += 8;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
528 yResolutionOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
529 nextOffset += 8;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
530 if (isColorMap) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
531 colorMapOffset = nextOffset;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
532 nextOffset += colorMap.length * 2;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
533 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
534 /* TIFF header */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
535 writeHeader();
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
536
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
537 /* Image File Directory */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
538 ostr.writeShort(numberEntries);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
539 writeEntry(TAG_ImageWidth, TYPE_LONG, 1, imageWidth);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
540 writeEntry(TAG_ImageLength, TYPE_LONG, 1, imageLength);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
541 if (isColorMap) writeEntry(TAG_BitsPerSample, TYPE_SHORT, 1, image.depth);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
542 if (isRGB) writeEntry(TAG_BitsPerSample, TYPE_SHORT, 3, bitsPerSampleOffset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
543 writeEntry(TAG_Compression, TYPE_SHORT, 1, COMPRESSION_NONE);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
544 writeEntry(TAG_PhotometricInterpretation, TYPE_SHORT, 1, photometricInterpretation);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
545 writeEntry(TAG_StripOffsets, TYPE_LONG, cnt, cnt > 1 ? stripOffsetsOffset : stripOffsets[0]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
546 if (isRGB) writeEntry(TAG_SamplesPerPixel, TYPE_SHORT, 1, 3);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
547 writeEntry(TAG_RowsPerStrip, TYPE_LONG, 1, nbrRowsPerStrip);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
548 writeEntry(TAG_StripByteCounts, TYPE_LONG, cnt, cnt > 1 ? stripByteCountsOffset : stripByteCounts[0]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
549 writeEntry(TAG_XResolution, TYPE_RATIONAL, 1, xResolutionOffset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
550 writeEntry(TAG_YResolution, TYPE_RATIONAL, 1, yResolutionOffset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
551 if (isColorMap) writeEntry(TAG_ColorMap, TYPE_SHORT, colorMap.length, colorMapOffset);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
552 /* Offset of next IFD (0 for last IFD) */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
553 ostr.writeInt(0);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
554
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
555 /* Values longer than 4 bytes Section */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
556
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
557 /* BitsPerSample 8,8,8 */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
558 if (isRGB) for (int i = 0; i < 3; i++) ostr.writeShort(8);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
559 if (cnt > 1) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
560 for (int i = 0; i < cnt; i++) ostr.writeInt(stripOffsets[i]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
561 for (int i = 0; i < cnt; i++) ostr.writeInt(stripByteCounts[i]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
562 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
563 /* XResolution and YResolution set to 300 dpi */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
564 for (int i = 0; i < 2; i++) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
565 ostr.writeInt(300);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
566 ostr.writeInt(1);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
567 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
568 /* ColorMap */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
569 if (isColorMap) for (int i = 0; i < colorMap.length; i++) ostr.writeShort(colorMap[i]);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
570
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
571 /* Image Data */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
572 ostr.write(data);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
573 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
574
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
575 void writeEntry(short tag, int type, int count, int value) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
576 ostr.writeShort(tag);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
577 ostr.writeShort(type);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
578 ostr.writeInt(count);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
579 ostr.writeInt(value);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
580 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
581
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
582 void writeHeader() {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
583 /* little endian */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
584 ostr.write(0x49);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
585 ostr.write(0x49);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
586
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
587 /* TIFF identifier */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
588 ostr.writeShort(42);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
589 /*
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
590 * Offset of the first IFD is chosen to be 8.
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
591 * It is word aligned and immediately after this header.
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
592 */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
593 ostr.writeInt(8);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
594 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
595
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
596 void writeToStream(LEDataOutputStream byteStream) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
597 ostr = byteStream;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
598 int photometricInterpretation = -1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
599
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
600 /* Scanline pad must be 1 */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
601 if (image.scanlinePad !is 1) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
602 switch (image.depth) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
603 case 1: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
604 /* Palette must be black and white or white and black */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
605 PaletteData palette = image.palette;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
606 RGB[] rgbs = palette.colors;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
607 if (palette.isDirect || rgbs is null || rgbs.length !is 2) DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
608 RGB rgb0 = rgbs[0];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
609 RGB rgb1 = rgbs[1];
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
610 if (!(rgb0.red is rgb0.green && rgb0.green is rgb0.blue &&
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
611 rgb1.red is rgb1.green && rgb1.green is rgb1.blue &&
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
612 ((rgb0.red is 0x0 && rgb1.red is 0xFF) || (rgb0.red is 0xFF && rgb1.red is 0x0)))) {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
613 DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
614 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
615 /* 0 means a color index of 0 is imaged as white */
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
616 photometricInterpretation = image.palette.colors[0].red is 0xFF ? 0 : 1;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
617 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
618 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
619 case 4:
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
620 case 8: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
621 photometricInterpretation = 3;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
622 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
623 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
624 case 24: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
625 photometricInterpretation = 2;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
626 break;
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
627 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
628 default: {
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
629 DWT.error(DWT.ERROR_UNSUPPORTED_FORMAT);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
630 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
631 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
632 write(photometricInterpretation);
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
633 }
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
634
57151e2793a2 More common modules from dwt-linux
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
635 }