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comparison dwt/internal/image/GIFFileFormat.d @ 7:e831403a80a9

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Add 'cast' to casts
author Frank Benoit <benoit@tionex.de>
date Wed, 27 Aug 2008 14:30:35 +0200
parents 380af2bdd8e5
children 5123b17c98ef
comparison
equal deleted inserted replaced
6:b903c16b6f48 7:e831403a80a9
33 static final int GIF_PLAIN_TEXT_BLOCK_ID = 0x01; 33 static final int GIF_PLAIN_TEXT_BLOCK_ID = 0x01;
34 static final int GIF_COMMENT_BLOCK_ID = 0xFE; 34 static final int GIF_COMMENT_BLOCK_ID = 0xFE;
35 static final int GIF_EXTENSION_BLOCK_ID = 0x21; 35 static final int GIF_EXTENSION_BLOCK_ID = 0x21;
36 static final int GIF_IMAGE_BLOCK_ID = 0x2C; 36 static final int GIF_IMAGE_BLOCK_ID = 0x2C;
37 static final int GIF_TRAILER_ID = 0x3B; 37 static final int GIF_TRAILER_ID = 0x3B;
38 static final byte [] GIF89a = new byte[] { (byte)'G', (byte)'I', (byte)'F', (byte)'8', (byte)'9', (byte)'a' }; 38 static final byte [] GIF89a = new byte[] { cast(byte)'G', cast(byte)'I', cast(byte)'F', cast(byte)'8', cast(byte)'9', cast(byte)'a' };
39 static final byte [] NETSCAPE2_0 = new byte[] { (byte)'N', (byte)'E', (byte)'T', (byte)'S', (byte)'C', (byte)'A', (byte)'P', (byte)'E', (byte)'2', (byte)'.', (byte)'0' }; 39 static final byte [] NETSCAPE2_0 = new byte[] { cast(byte)'N', cast(byte)'E', cast(byte)'T', cast(byte)'S', cast(byte)'C', cast(byte)'A', cast(byte)'P', cast(byte)'E', cast(byte)'2', cast(byte)'.', cast(byte)'0' };
40 40
41 /** 41 /**
42 * Answer a palette containing numGrays 42 * Answer a palette containing numGrays
43 * shades of gray, ranging from black to white. 43 * shades of gray, ranging from black to white.
44 */ 44 */
45 static PaletteData grayRamp(int numGrays) { 45 static PaletteData grayRamp(int numGrays) {
46 int n = numGrays - 1; 46 int n = numGrays - 1;
47 RGB[] colors = new RGB[numGrays]; 47 RGB[] colors = new RGB[numGrays];
48 for (int i = 0; i < numGrays; i++) { 48 for (int i = 0; i < numGrays; i++) {
49 int intensity = (byte)((i * 3) * 256 / n); 49 int intensity = cast(byte)((i * 3) * 256 / n);
50 colors[i] = new RGB(intensity, intensity, intensity); 50 colors[i] = new RGB(intensity, intensity, intensity);
51 } 51 }
52 return new PaletteData(colors); 52 return new PaletteData(colors);
53 } 53 }
54 54
119 try { 119 try {
120 /* Read the 0-byte terminator at the end of the image. */ 120 /* Read the 0-byte terminator at the end of the image. */
121 id = inputStream.read(); 121 id = inputStream.read();
122 if (id > 0) { 122 if (id > 0) {
123 /* We read the terminator earlier. */ 123 /* We read the terminator earlier. */
124 inputStream.unread(new byte[] {(byte)id}); 124 inputStream.unread(new byte[] {cast(byte)id});
125 } 125 }
126 } catch (IOException e) { 126 } catch (IOException e) {
127 DWT.error(DWT.ERROR_IO, e); 127 DWT.error(DWT.ERROR_IO, e);
128 } 128 }
129 getExtensions(); 129 getExtensions();
162 } 162 }
163 id = readID(); 163 id = readID();
164 } 164 }
165 if (id is GIF_IMAGE_BLOCK_ID || id is GIF_TRAILER_ID) { 165 if (id is GIF_IMAGE_BLOCK_ID || id is GIF_TRAILER_ID) {
166 try { 166 try {
167 inputStream.unread(new byte[] {(byte)id}); 167 inputStream.unread(new byte[] {cast(byte)id});
168 } catch (IOException e) { 168 } catch (IOException e) {
169 DWT.error(DWT.ERROR_IO, e); 169 DWT.error(DWT.ERROR_IO, e);
170 } 170 }
171 } 171 }
172 } 172 }
481 481
482 try { 482 try {
483 /* Step 3: Write the GIF89a Header and Logical Screen Descriptor. */ 483 /* Step 3: Write the GIF89a Header and Logical Screen Descriptor. */
484 outputStream.write(GIF89a); 484 outputStream.write(GIF89a);
485 int bitField = globalTable*128 + (depth-1)*16 + depth-1; 485 int bitField = globalTable*128 + (depth-1)*16 + depth-1;
486 outputStream.writeShort((short)logicalScreenWidth); 486 outputStream.writeShort(cast(short)logicalScreenWidth);
487 outputStream.writeShort((short)logicalScreenHeight); 487 outputStream.writeShort(cast(short)logicalScreenHeight);
488 outputStream.write(bitField); 488 outputStream.write(bitField);
489 outputStream.write(backgroundPixel); 489 outputStream.write(backgroundPixel);
490 outputStream.write(0); // Aspect ratio is 1:1 490 outputStream.write(0); // Aspect ratio is 1:1
491 } catch (IOException e) { 491 } catch (IOException e) {
492 DWT.error(DWT.ERROR_IO, e); 492 DWT.error(DWT.ERROR_IO, e);
505 outputStream.write(GIF_APPLICATION_EXTENSION_BLOCK_ID); 505 outputStream.write(GIF_APPLICATION_EXTENSION_BLOCK_ID);
506 outputStream.write(NETSCAPE2_0.length); 506 outputStream.write(NETSCAPE2_0.length);
507 outputStream.write(NETSCAPE2_0); 507 outputStream.write(NETSCAPE2_0);
508 outputStream.write(3); // Three bytes follow 508 outputStream.write(3); // Three bytes follow
509 outputStream.write(1); // Extension type 509 outputStream.write(1); // Extension type
510 outputStream.writeShort((short) repeatCount); 510 outputStream.writeShort(cast(short) repeatCount);
511 outputStream.write(0); // Block terminator 511 outputStream.write(0); // Block terminator
512 } catch (IOException e) { 512 } catch (IOException e) {
513 DWT.error(DWT.ERROR_IO, e); 513 DWT.error(DWT.ERROR_IO, e);
514 } 514 }
515 } 515 }
527 int width = data[frame].width; 527 int width = data[frame].width;
528 int height = data[frame].height; 528 int height = data[frame].height;
529 try { 529 try {
530 outputStream.write(GIF_IMAGE_BLOCK_ID); 530 outputStream.write(GIF_IMAGE_BLOCK_ID);
531 byte[] block = new byte[9]; 531 byte[] block = new byte[9];
532 block[0] = (byte)(x & 0xFF); 532 block[0] = cast(byte)(x & 0xFF);
533 block[1] = (byte)((x >> 8) & 0xFF); 533 block[1] = cast(byte)((x >> 8) & 0xFF);
534 block[2] = (byte)(y & 0xFF); 534 block[2] = cast(byte)(y & 0xFF);
535 block[3] = (byte)((y >> 8) & 0xFF); 535 block[3] = cast(byte)((y >> 8) & 0xFF);
536 block[4] = (byte)(width & 0xFF); 536 block[4] = cast(byte)(width & 0xFF);
537 block[5] = (byte)((width >> 8) & 0xFF); 537 block[5] = cast(byte)((width >> 8) & 0xFF);
538 block[6] = (byte)(height & 0xFF); 538 block[6] = cast(byte)(height & 0xFF);
539 block[7] = (byte)((height >> 8) & 0xFF); 539 block[7] = cast(byte)((height >> 8) & 0xFF);
540 block[8] = (byte)(globalTable is 0 ? (depth-1) | 0x80 : 0x00); 540 block[8] = cast(byte)(globalTable is 0 ? (depth-1) | 0x80 : 0x00);
541 outputStream.write(block); 541 outputStream.write(block);
542 } catch (IOException e) { 542 } catch (IOException e) {
543 DWT.error(DWT.ERROR_IO, e); 543 DWT.error(DWT.ERROR_IO, e);
544 } 544 }
545 545
577 gcBlock[0] = 0; 577 gcBlock[0] = 0;
578 gcBlock[1] = 0; 578 gcBlock[1] = 0;
579 gcBlock[2] = 0; 579 gcBlock[2] = 0;
580 gcBlock[3] = 0; 580 gcBlock[3] = 0;
581 if (image.transparentPixel !is -1) { 581 if (image.transparentPixel !is -1) {
582 gcBlock[0] = (byte)0x01; 582 gcBlock[0] = cast(byte)0x01;
583 gcBlock[3] = (byte)image.transparentPixel; 583 gcBlock[3] = cast(byte)image.transparentPixel;
584 } 584 }
585 if (image.disposalMethod !is 0) { 585 if (image.disposalMethod !is 0) {
586 gcBlock[0] |= (byte)((image.disposalMethod & 0x07) << 2); 586 gcBlock[0] |= cast(byte)((image.disposalMethod & 0x07) << 2);
587 } 587 }
588 if (image.delayTime !is 0) { 588 if (image.delayTime !is 0) {
589 gcBlock[1] = (byte)(image.delayTime & 0xFF); 589 gcBlock[1] = cast(byte)(image.delayTime & 0xFF);
590 gcBlock[2] = (byte)((image.delayTime >> 8) & 0xFF); 590 gcBlock[2] = cast(byte)((image.delayTime >> 8) & 0xFF);
591 } 591 }
592 outputStream.write((byte)gcBlock.length); 592 outputStream.write(cast(byte)gcBlock.length);
593 outputStream.write(gcBlock); 593 outputStream.write(gcBlock);
594 outputStream.write(0); // Block terminator 594 outputStream.write(0); // Block terminator
595 } catch (IOException e) { 595 } catch (IOException e) {
596 DWT.error(DWT.ERROR_IO, e); 596 DWT.error(DWT.ERROR_IO, e);
597 } 597 }
603 void writePalette(PaletteData palette, int depth) { 603 void writePalette(PaletteData palette, int depth) {
604 byte[] bytes = new byte[(1 << depth) * 3]; 604 byte[] bytes = new byte[(1 << depth) * 3];
605 int offset = 0; 605 int offset = 0;
606 for (int i = 0; i < palette.colors.length; i++) { 606 for (int i = 0; i < palette.colors.length; i++) {
607 RGB color = palette.colors[i]; 607 RGB color = palette.colors[i];
608 bytes[offset] = (byte)color.red; 608 bytes[offset] = cast(byte)color.red;
609 bytes[offset + 1] = (byte)color.green; 609 bytes[offset + 1] = cast(byte)color.green;
610 bytes[offset + 2] = (byte)color.blue; 610 bytes[offset + 2] = cast(byte)color.blue;
611 offset += 3; 611 offset += 3;
612 } 612 }
613 try { 613 try {
614 outputStream.write(bytes); 614 outputStream.write(bytes);
615 } catch (IOException e) { 615 } catch (IOException e) {