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comparison dwt/internal/image/LZWCodec.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.LZWCodec;
12 14
13 15
16 import dwt.internal.image.LZWNode;
17 import dwt.internal.image.LEDataInputStream;
18 import dwt.internal.image.LEDataOutputStream;
14 import dwt.DWT; 19 import dwt.DWT;
15 import dwt.graphics.ImageData; 20 import dwt.graphics.ImageData;
16 import dwt.graphics.ImageLoader; 21 import dwt.graphics.ImageLoader;
17 import dwt.graphics.ImageLoaderEvent; 22 import dwt.graphics.ImageLoaderEvent;
23 import dwt.dwthelper.utils;
24
25 import tango.core.Exception;
18 26
19 final class LZWCodec { 27 final class LZWCodec {
20 int bitsPerPixel, blockSize, blockIndex, currentByte, bitsLeft, 28 int bitsPerPixel, blockSize, blockIndex, currentByte, bitsLeft,
21 codeSize, clearCode, endCode, newCodes, topSlot, currentSlot, 29 codeSize, clearCode, endCode, newCodes, topSlot, currentSlot,
22 imageWidth, imageHeight, imageX, imageY, pass, line, codeMask; 30 imageWidth, imageHeight, imageX, imageY, pass, line, codeMask;
26 LEDataInputStream inputStream; 34 LEDataInputStream inputStream;
27 LEDataOutputStream outputStream; 35 LEDataOutputStream outputStream;
28 ImageData image; 36 ImageData image;
29 ImageLoader loader; 37 ImageLoader loader;
30 bool interlaced; 38 bool interlaced;
31 static final int[] MASK_TABLE = new int[] { 39 static final int[] MASK_TABLE = [
32 0x1, 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 40 0x1, 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F,
33 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF 41 0xFF, 0x1FF, 0x3FF, 0x7FF, 0xFFF
34 }; 42 ];
35 43
36 /** 44 /**
37 * Decode the input. 45 * Decode the input.
38 */ 46 */
39 void decode() { 47 void decode() {