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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 |
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28 | 28 |
29 #include "platform/image-decoders/ImageDecoder.h" | 29 #include "platform/image-decoders/ImageDecoder.h" |
30 | 30 |
31 namespace blink { | 31 namespace blink { |
32 | 32 |
33 class PNGImageReader; | 33 class PNGImageReader; |
34 | 34 |
35 class PLATFORM_EXPORT PNGImageDecoder final : public ImageDecoder { | 35 class PLATFORM_EXPORT PNGImageDecoder final : public ImageDecoder { |
36 WTF_MAKE_NONCOPYABLE(PNGImageDecoder); | 36 WTF_MAKE_NONCOPYABLE(PNGImageDecoder); |
37 public: | 37 public: |
38 PNGImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy
tes, unsigned offset = 0); | 38 PNGImageDecoder(AlphaOption, GammaAndColorProfileOption, size_t maxDecodedBy
tes, size_t offset = 0); |
39 ~PNGImageDecoder() override; | 39 ~PNGImageDecoder() override; |
40 | 40 |
41 // ImageDecoder: | 41 // ImageDecoder: |
42 String filenameExtension() const override { return "png"; } | 42 String filenameExtension() const override { return "png"; } |
43 bool hasColorProfile() const override { return m_hasColorProfile; } | 43 bool hasColorProfile() const override { return m_hasColorProfile; } |
44 | 44 |
45 // Callbacks from libpng | 45 // Callbacks from libpng |
46 void headerAvailable(); | 46 void headerAvailable(); |
47 void rowAvailable(unsigned char* row, unsigned rowIndex, int); | 47 void rowAvailable(unsigned char* row, unsigned rowIndex, int); |
48 void complete(); | 48 void complete(); |
49 | 49 |
50 private: | 50 private: |
51 // ImageDecoder: | 51 // ImageDecoder: |
52 void decodeSize() override { decode(true); } | 52 void decodeSize() override { decode(true); } |
53 void decode(size_t) override { decode(false); } | 53 void decode(size_t) override { decode(false); } |
54 | 54 |
55 // Decodes the image. If |onlySize| is true, stops decoding after | 55 // Decodes the image. If |onlySize| is true, stops decoding after |
56 // calculating the image size. If decoding fails but there is no more | 56 // calculating the image size. If decoding fails but there is no more |
57 // data coming, sets the "decode failure" flag. | 57 // data coming, sets the "decode failure" flag. |
58 void decode(bool onlySize); | 58 void decode(bool onlySize); |
59 | 59 |
60 OwnPtr<PNGImageReader> m_reader; | 60 OwnPtr<PNGImageReader> m_reader; |
61 bool m_hasColorProfile; | 61 bool m_hasColorProfile; |
62 const unsigned m_offset; | 62 const unsigned m_offset; |
63 }; | 63 }; |
64 | 64 |
65 } // namespace blink | 65 } // namespace blink |
66 | 66 |
67 #endif | 67 #endif |
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