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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 "SkCodec.h" | 8 #include "SkCodec.h" |
9 #include "SkColorTable.h" | 9 #include "SkColorTable.h" |
10 #include "SkEncodedFormat.h" | 10 #include "SkEncodedFormat.h" |
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34 protected: | 34 protected: |
35 Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMCo
lor*, int*) | 35 Result onGetPixels(const SkImageInfo&, void*, size_t, const Options&, SkPMCo
lor*, int*) |
36 override; | 36 override; |
37 SkEncodedFormat onGetEncodedFormat() const override { return kPNG_SkEncodedF
ormat; } | 37 SkEncodedFormat onGetEncodedFormat() const override { return kPNG_SkEncodedF
ormat; } |
38 bool onRewind() override; | 38 bool onRewind() override; |
39 bool onReallyHasAlpha() const final; | 39 bool onReallyHasAlpha() const final; |
40 | 40 |
41 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. | 41 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. |
42 Result initializeSwizzler(const SkImageInfo& requestedInfo, const Options&, | 42 Result initializeSwizzler(const SkImageInfo& requestedInfo, const Options&, |
43 SkPMColor*, int* ctableCount); | 43 SkPMColor*, int* ctableCount); |
| 44 SkSampler* getSampler() override { return fSwizzler; } |
44 | 45 |
45 SkPngCodec(const SkImageInfo&, SkStream*, png_structp, png_infop, int, int); | 46 SkPngCodec(const SkImageInfo&, SkStream*, png_structp, png_infop, int, int); |
46 | 47 |
47 png_structp png_ptr() { return fPng_ptr; } | 48 png_structp png_ptr() { return fPng_ptr; } |
48 SkSwizzler* swizzler() { return fSwizzler; } | 49 SkSwizzler* swizzler() { return fSwizzler; } |
49 SkSwizzler::SrcConfig srcConfig() const { return fSrcConfig; } | 50 SkSwizzler::SrcConfig srcConfig() const { return fSrcConfig; } |
50 int numberPasses() const { return fNumberPasses; } | 51 int numberPasses() const { return fNumberPasses; } |
51 | 52 |
52 enum AlphaState { | 53 enum AlphaState { |
53 // This class has done no decoding, or threw away its knowledge (in | 54 // This class has done no decoding, or threw away its knowledge (in |
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74 const int fNumberPasses; | 75 const int fNumberPasses; |
75 int fBitDepth; | 76 int fBitDepth; |
76 | 77 |
77 AlphaState fAlphaState; | 78 AlphaState fAlphaState; |
78 | 79 |
79 bool decodePalette(bool premultiply, int* ctableCount); | 80 bool decodePalette(bool premultiply, int* ctableCount); |
80 void destroyReadStruct(); | 81 void destroyReadStruct(); |
81 | 82 |
82 typedef SkCodec INHERITED; | 83 typedef SkCodec INHERITED; |
83 }; | 84 }; |
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