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Side by Side Diff: Source/platform/image-decoders/png/PNGImageDecoder.h

Issue 1312843006: Animated PNG implementation (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Created 5 years, 3 months ago
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1 /* 1 /*
2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * 3 *
4 * Redistribution and use in source and binary forms, with or without 4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions 5 * modification, are permitted provided that the following conditions
6 * are met: 6 * are met:
7 * 1. Redistributions of source code must retain the above copyright 7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer. 8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright 9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the 10 * notice, this list of conditions and the following disclaimer in the
(...skipping 25 matching lines...) Expand all
36 36
37 class PLATFORM_EXPORT PNGImageDecoder : public ImageDecoder { 37 class PLATFORM_EXPORT PNGImageDecoder : public ImageDecoder {
38 WTF_MAKE_NONCOPYABLE(PNGImageDecoder); 38 WTF_MAKE_NONCOPYABLE(PNGImageDecoder);
39 public: 39 public:
40 PNGImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy tes); 40 PNGImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy tes);
41 ~PNGImageDecoder() override; 41 ~PNGImageDecoder() override;
42 42
43 // ImageDecoder: 43 // ImageDecoder:
44 String filenameExtension() const override { return "png"; } 44 String filenameExtension() const override { return "png"; }
45 bool hasColorProfile() const override { return m_hasColorProfile; } 45 bool hasColorProfile() const override { return m_hasColorProfile; }
46 bool frameIsCompleteAtIndex(size_t) const override;
47 float frameDurationAtIndex(size_t) const override;
48 int repetitionCount() const override;
49 size_t clearCacheExceptFrame(size_t) override;
46 50
47 // Callbacks from libpng 51 // Callbacks from libpng
48 void headerAvailable(); 52 void headerAvailable();
49 void rowAvailable(unsigned char* row, unsigned rowIndex, int); 53 void rowAvailable(unsigned char* row, unsigned rowIndex, int);
50 void complete(); 54 void complete();
51 55
52 private: 56 private:
53 // ImageDecoder: 57 // ImageDecoder:
54 void decodeSize() override { decode(true); } 58 void decodeSize() override { parse(); }
55 void decode(size_t) override { decode(false); } 59 void decode(size_t) override;
60 size_t decodeFrameCount() override;
61 void initializeNewFrame(size_t) override;
56 62
57 // Decodes the image. If |onlySize| is true, stops decoding after 63 bool initFrameBuffer();
58 // calculating the image size. If decoding fails but there is no more 64 bool parse();
59 // data coming, sets the "decode failure" flag.
60 void decode(bool onlySize);
61 65
62 OwnPtr<PNGImageReader> m_reader; 66 OwnPtr<PNGImageReader> m_reader;
63 bool m_hasColorProfile; 67 bool m_hasColorProfile;
68 size_t m_currentFrame;
64 }; 69 };
65 70
66 } // namespace blink 71 } // namespace blink
67 72
68 #endif 73 #endif
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