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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #include "SkCodecPriv.h" | 8 #include "SkCodecPriv.h" |
9 #include "SkColorPriv.h" | 9 #include "SkColorPriv.h" |
10 #include "SkColorTable.h" | 10 #include "SkColorTable.h" |
11 #include "SkBitmap.h" | 11 #include "SkBitmap.h" |
12 #include "SkMath.h" | 12 #include "SkMath.h" |
13 #include "SkOpts.h" | 13 #include "SkOpts.h" |
14 #include "SkPngCodec.h" | 14 #include "SkPngCodec.h" |
15 #include "SkPngFilters.h" | |
16 #include "SkSize.h" | 15 #include "SkSize.h" |
17 #include "SkStream.h" | 16 #include "SkStream.h" |
18 #include "SkSwizzler.h" | 17 #include "SkSwizzler.h" |
19 #include "SkTemplates.h" | 18 #include "SkTemplates.h" |
20 | 19 |
21 // png_struct::read_filter[] was added in libpng 1.5.7. | |
22 #if defined(__SSE2__) && PNG_LIBPNG_VER >= 10507 && !defined(PNG_SKIP_SKIA_OPTS) | |
23 #include "pngstruct.h" | |
24 | |
25 extern "C" void sk_png_init_filter_functions_sse2(png_structp png, unsigned
int bpp) { | |
26 if (bpp == 3) { | |
27 png->read_filter[PNG_FILTER_VALUE_SUB -1] = sk_sub3_sse2; | |
28 png->read_filter[PNG_FILTER_VALUE_AVG -1] = sk_avg3_sse2; | |
29 png->read_filter[PNG_FILTER_VALUE_PAETH-1] = sk_paeth3_sse2; | |
30 } | |
31 if (bpp == 4) { | |
32 png->read_filter[PNG_FILTER_VALUE_SUB -1] = sk_sub4_sse2; | |
33 png->read_filter[PNG_FILTER_VALUE_AVG -1] = sk_avg4_sse2; | |
34 png->read_filter[PNG_FILTER_VALUE_PAETH-1] = sk_paeth4_sse2; | |
35 } | |
36 } | |
37 #endif | |
38 | |
39 /////////////////////////////////////////////////////////////////////////////// | 20 /////////////////////////////////////////////////////////////////////////////// |
40 // Callback functions | 21 // Callback functions |
41 /////////////////////////////////////////////////////////////////////////////// | 22 /////////////////////////////////////////////////////////////////////////////// |
42 | 23 |
43 static void sk_error_fn(png_structp png_ptr, png_const_charp msg) { | 24 static void sk_error_fn(png_structp png_ptr, png_const_charp msg) { |
44 SkCodecPrintf("------ png error %s\n", msg); | 25 SkCodecPrintf("------ png error %s\n", msg); |
45 longjmp(png_jmpbuf(png_ptr), 1); | 26 longjmp(png_jmpbuf(png_ptr), 1); |
46 } | 27 } |
47 | 28 |
48 void sk_warning_fn(png_structp, png_const_charp msg) { | 29 void sk_warning_fn(png_structp, png_const_charp msg) { |
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758 } | 739 } |
759 | 740 |
760 if (1 == numberPasses) { | 741 if (1 == numberPasses) { |
761 return new SkPngScanlineDecoder(imageInfo, streamDeleter.detach(), chunk
Reader, | 742 return new SkPngScanlineDecoder(imageInfo, streamDeleter.detach(), chunk
Reader, |
762 png_ptr, info_ptr, bitDepth); | 743 png_ptr, info_ptr, bitDepth); |
763 } | 744 } |
764 | 745 |
765 return new SkPngInterlacedScanlineDecoder(imageInfo, streamDeleter.detach(),
chunkReader, | 746 return new SkPngInterlacedScanlineDecoder(imageInfo, streamDeleter.detach(),
chunkReader, |
766 png_ptr, info_ptr, bitDepth, numbe
rPasses); | 747 png_ptr, info_ptr, bitDepth, numbe
rPasses); |
767 } | 748 } |
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