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comparison dwt/internal/image/JPEGQuantizationTable.d @ 34:5123b17c98ef

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Ported dwt.events.*, dwt.graphics.GC, Region, dwt.internal.image.*
author Jacob Carlborg <doob@me.com> <jacob.carlborg@gmail.com>
date Sun, 14 Sep 2008 01:45:57 +0200
parents e831403a80a9
children
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33:965ac0a77267 34:5123b17c98ef
5 * which accompanies this distribution, and is available at 5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html 6 * http://www.eclipse.org/legal/epl-v10.html
7 * 7 *
8 * Contributors: 8 * Contributors:
9 * IBM Corporation - initial API and implementation 9 * IBM Corporation - initial API and implementation
10 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
10 *******************************************************************************/ 12 *******************************************************************************/
11 module dwt.internal.image; 13 module dwt.internal.image.JPEGQuantizationTable;
12 14
15 import dwt.internal.image.LEDataInputStream;
16 import dwt.internal.image.JPEGVariableSizeSegment;
17 import dwt.internal.image.JPEGFileFormat;
18
19 import dwt.dwthelper.System;
13 20
14 final class JPEGQuantizationTable : JPEGVariableSizeSegment { 21 final class JPEGQuantizationTable : JPEGVariableSizeSegment {
15 public static byte[] DefaultLuminanceQTable = { 22 public static byte[] DefaultLuminanceQTable = [
16 cast(byte)255, cast(byte)219, 0, 67, 0, 23 cast(byte)255, cast(byte)219, 0, 67, 0,
17 16, 11, 10, 16, 24, 40, 51, 61, 24 16, 11, 10, 16, 24, 40, 51, 61,
18 12, 12, 14, 19, 26, 58, 60, 55, 25 12, 12, 14, 19, 26, 58, 60, 55,
19 14, 13, 16, 24, 40, 57, 69, 56, 26 14, 13, 16, 24, 40, 57, 69, 56,
20 14, 17, 22, 29, 51, 87, 80, 62, 27 14, 17, 22, 29, 51, 87, 80, 62,
21 18, 22, 37, 56, 68, 109, 103, 77, 28 18, 22, 37, 56, 68, 109, 103, 77,
22 24, 35, 55, 64, 81, 104, 113, 92, 29 24, 35, 55, 64, 81, 104, 113, 92,
23 49, 64, 78, 87, 103, 121, 120, 101, 30 49, 64, 78, 87, 103, 121, 120, 101,
24 72, 92, 95, 98, 112, 100, 103, 99 31 72, 92, 95, 98, 112, 100, 103, 99
25 }; 32 ];
26 public static byte[] DefaultChrominanceQTable = { 33 public static byte[] DefaultChrominanceQTable = [
27 cast(byte)255, cast(byte)219, 0, 67, 1, 34 cast(byte)255, cast(byte)219, 0, 67, 1,
28 17, 18, 24, 47, 99, 99, 99, 99, 35 17, 18, 24, 47, 99, 99, 99, 99,
29 18, 21, 26, 66, 99, 99, 99, 99, 36 18, 21, 26, 66, 99, 99, 99, 99,
30 24, 26, 56, 99, 99, 99, 99, 99, 37 24, 26, 56, 99, 99, 99, 99, 99,
31 47, 66, 99, 99, 99, 99, 99, 99, 38 47, 66, 99, 99, 99, 99, 99, 99,
32 99, 99, 99, 99, 99, 99, 99, 99, 39 99, 99, 99, 99, 99, 99, 99, 99,
33 99, 99, 99, 99, 99, 99, 99, 99, 40 99, 99, 99, 99, 99, 99, 99, 99,
34 99, 99, 99, 99, 99, 99, 99, 99, 41 99, 99, 99, 99, 99, 99, 99, 99,
35 99, 99, 99, 99, 99, 99, 99, 99 42 99, 99, 99, 99, 99, 99, 99, 99
36 }; 43 ];
37 44
38 public this(byte[] reference) { 45 public this(byte[] reference) {
39 super(reference); 46 super(reference);
40 } 47 }
41 48
42 public this(LEDataInputStream byteStream) { 49 public this(LEDataInputStream byteStream) {
82 System.arraycopy(keys, 0, newKeys, 0, keysIndex); 89 System.arraycopy(keys, 0, newKeys, 0, keysIndex);
83 return newKeys; 90 return newKeys;
84 } 91 }
85 92
86 public int[][] getQuantizationTablesValues() { 93 public int[][] getQuantizationTablesValues() {
87 int[][] values = new int[4][]; 94 int[][] values = new int[][](4);
88 int valuesIndex = 0; 95 int valuesIndex = 0;
89 int totalLength = getSegmentLength() - 2; 96 int totalLength = getSegmentLength() - 2;
90 int ofs = 4; 97 int ofs = 4;
91 while (totalLength > 64) { 98 while (totalLength > 64) {
92 int[] qk = new int[64]; 99 int[] qk = new int[64];
104 } 111 }
105 ofs += 129; 112 ofs += 129;
106 totalLength -= 129; 113 totalLength -= 129;
107 } 114 }
108 if (valuesIndex >= values.length) { 115 if (valuesIndex >= values.length) {
109 int[][] newValues = new int[values.length + 4][]; 116 int[][] newValues = new int[][](values.length + 4);
110 System.arraycopy(values, 0, newValues, 0, values.length); 117 System.arraycopy(values, 0, newValues, 0, values.length);
111 values = newValues; 118 values = newValues;
112 } 119 }
113 values[valuesIndex] = qk; 120 values[valuesIndex] = qk;
114 valuesIndex++; 121 valuesIndex++;
115 } 122 }
116 int[][] newValues = new int[valuesIndex][]; 123 int[][] newValues = new int[][](valuesIndex);
117 System.arraycopy(values, 0, newValues, 0, valuesIndex); 124 System.arraycopy(values, 0, newValues, 0, valuesIndex);
118 return newValues; 125 return newValues;
119 } 126 }
120 127
121 public void scaleBy(int qualityFactor) { 128 public void scaleBy(int qualityFactor) {
157 totalLength -= 129; 164 totalLength -= 129;
158 } 165 }
159 } 166 }
160 } 167 }
161 168
162 public int signature() { 169 public override int signature() {
163 return JPEGFileFormat.DQT; 170 return JPEGFileFormat.DQT;
164 } 171 }
165 } 172 }