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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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37 png_structp fPng_ptr; | 37 png_structp fPng_ptr; |
38 png_infop fInfo_ptr; | 38 png_infop fInfo_ptr; |
39 | 39 |
40 // These are stored here so they can be used both by normal decoding and sca
nline decoding. | 40 // These are stored here so they can be used both by normal decoding and sca
nline decoding. |
41 SkAutoTUnref<SkColorTable> fColorTable; // May be unpremul. | 41 SkAutoTUnref<SkColorTable> fColorTable; // May be unpremul. |
42 SkAutoTDelete<SkSwizzler> fSwizzler; | 42 SkAutoTDelete<SkSwizzler> fSwizzler; |
43 | 43 |
44 SkSwizzler::SrcConfig fSrcConfig; | 44 SkSwizzler::SrcConfig fSrcConfig; |
45 int fNumberPasses; | 45 int fNumberPasses; |
46 bool fReallyHasAlpha; | 46 bool fReallyHasAlpha; |
| 47 int fBitDepth; |
47 | 48 |
48 SkPngCodec(const SkImageInfo&, SkStream*, png_structp, png_infop); | 49 SkPngCodec(const SkImageInfo&, SkStream*, png_structp, png_infop, int); |
49 ~SkPngCodec(); | 50 ~SkPngCodec(); |
50 | 51 |
| 52 |
51 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. | 53 // Helper to set up swizzler and color table. Also calls png_read_update_inf
o. |
52 Result initializeSwizzler(const SkImageInfo& requestedInfo, void* dst, | 54 Result initializeSwizzler(const SkImageInfo& requestedInfo, void* dst, |
53 size_t rowBytes, const Options&, SkPMColor*, int*
ctableCount); | 55 size_t rowBytes, const Options&, SkPMColor*, int*
ctableCount); |
54 // Calls rewindIfNeeded, and returns true if the decoder can continue. | 56 |
| 57 // Calls rewindIfNeeded and returns true if the decoder can continue. |
55 bool handleRewind(); | 58 bool handleRewind(); |
56 bool decodePalette(bool premultiply, int bitDepth, int* ctableCount); | 59 bool decodePalette(bool premultiply, int bitDepth, int* ctableCount); |
57 void finish(); | 60 void finish(); |
58 void destroyReadStruct(); | 61 void destroyReadStruct(); |
59 | 62 |
60 friend class SkPngScanlineDecoder; | 63 friend class SkPngScanlineDecoder; |
61 friend class SkPngInterlacedScanlineDecoder; | 64 friend class SkPngInterlacedScanlineDecoder; |
62 | 65 |
63 typedef SkCodec INHERITED; | 66 typedef SkCodec INHERITED; |
64 }; | 67 }; |
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