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Side by Side Diff: Source/platform/graphics/ImageFrameGenerator.h

Issue 544323002: Non DCTSIZE multiple width support for JPEG YUV decoding (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Tidying up the code Created 6 years, 3 months ago
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1 /* 1 /*
2 * Copyright (C) 2012 Google Inc. All rights reserved. 2 * Copyright (C) 2012 Google 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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65 ~ImageFrameGenerator(); 65 ~ImageFrameGenerator();
66 66
67 // Decodes and scales the specified frame indicated by |index|. Dimensions 67 // Decodes and scales the specified frame indicated by |index|. Dimensions
68 // and output format are specified in |info|. Decoded pixels are written 68 // and output format are specified in |info|. Decoded pixels are written
69 // into |pixels| with a stride of |rowBytes|. 69 // into |pixels| with a stride of |rowBytes|.
70 // 70 //
71 // Returns true if decoding was successful. 71 // Returns true if decoding was successful.
72 bool decodeAndScale(const SkImageInfo&, size_t index, void* pixels, size_t r owBytes); 72 bool decodeAndScale(const SkImageInfo&, size_t index, void* pixels, size_t r owBytes);
73 73
74 // Decodes YUV components directly into the provided memory planes. 74 // Decodes YUV components directly into the provided memory planes.
75 bool decodeToYUV(void* planes[3], size_t rowBytes[3]); 75 bool decodeToYUV(SkISize componentSizes[3], void* planes[3], size_t rowBytes [3]);
76 76
77 void setData(PassRefPtr<SharedBuffer>, bool allDataReceived); 77 void setData(PassRefPtr<SharedBuffer>, bool allDataReceived);
78 78
79 // Creates a new SharedBuffer containing the data received so far. 79 // Creates a new SharedBuffer containing the data received so far.
80 void copyData(RefPtr<SharedBuffer>*, bool* allDataReceived); 80 void copyData(RefPtr<SharedBuffer>*, bool* allDataReceived);
81 81
82 SkISize getFullSize() const { return m_fullSize; } 82 SkISize getFullSize() const { return m_fullSize; }
83 83
84 bool isMultiFrame() const { return m_isMultiFrame; } 84 bool isMultiFrame() const { return m_isMultiFrame; }
85 85
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117 // Prevents multiple decode operations on the same data. 117 // Prevents multiple decode operations on the same data.
118 Mutex m_decodeMutex; 118 Mutex m_decodeMutex;
119 119
120 // Protect concurrent access to m_hasAlpha. 120 // Protect concurrent access to m_hasAlpha.
121 Mutex m_alphaMutex; 121 Mutex m_alphaMutex;
122 }; 122 };
123 123
124 } // namespace blink 124 } // namespace blink
125 125
126 #endif 126 #endif
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