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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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| 57 virtual ~ImageDecoderFactory() {} | 57 virtual ~ImageDecoderFactory() {} |
| 58 virtual std::unique_ptr<ImageDecoder> create() = 0; | 58 virtual std::unique_ptr<ImageDecoder> create() = 0; |
| 59 }; | 59 }; |
| 60 | 60 |
| 61 class PLATFORM_EXPORT ImageFrameGenerator final | 61 class PLATFORM_EXPORT ImageFrameGenerator final |
| 62 : public ThreadSafeRefCounted<ImageFrameGenerator> { | 62 : public ThreadSafeRefCounted<ImageFrameGenerator> { |
| 63 WTF_MAKE_NONCOPYABLE(ImageFrameGenerator); | 63 WTF_MAKE_NONCOPYABLE(ImageFrameGenerator); |
| 64 | 64 |
| 65 public: | 65 public: |
| 66 static PassRefPtr<ImageFrameGenerator> create(const SkISize& fullSize, | 66 static PassRefPtr<ImageFrameGenerator> create(const SkISize& fullSize, |
| 67 sk_sp<SkColorSpace> colorSpace, |
| 67 bool isMultiFrame = false) { | 68 bool isMultiFrame = false) { |
| 68 return adoptRef(new ImageFrameGenerator(fullSize, isMultiFrame)); | 69 return adoptRef( |
| 70 new ImageFrameGenerator(fullSize, std::move(colorSpace), isMultiFrame)); |
| 69 } | 71 } |
| 70 | 72 |
| 71 ~ImageFrameGenerator(); | 73 ~ImageFrameGenerator(); |
| 72 | 74 |
| 73 // Decodes and scales the specified frame at |index|. The dimensions and | 75 // Decodes and scales the specified frame at |index|. The dimensions and |
| 74 // output format are given in SkImageInfo. Decoded pixels are written into | 76 // output format are given in SkImageInfo. Decoded pixels are written into |
| 75 // |pixels| with a stride of |rowBytes|. Returns true if decoding was | 77 // |pixels| with a stride of |rowBytes|. Returns true if decoding was |
| 76 // successful. | 78 // successful. |
| 77 bool decodeAndScale(SegmentReader*, | 79 bool decodeAndScale(SegmentReader*, |
| 78 bool allDataReceived, | 80 bool allDataReceived, |
| 79 size_t index, | 81 size_t index, |
| 80 const SkImageInfo&, | 82 const SkImageInfo&, |
| 81 void* pixels, | 83 void* pixels, |
| 82 size_t rowBytes); | 84 size_t rowBytes); |
| 83 | 85 |
| 84 // Decodes YUV components directly into the provided memory planes. Must not | 86 // Decodes YUV components directly into the provided memory planes. Must not |
| 85 // be called unless getYUVComponentSizes has been called and returned true. | 87 // be called unless getYUVComponentSizes has been called and returned true. |
| 86 // YUV decoding does not currently support progressive decoding. In order to | 88 // YUV decoding does not currently support progressive decoding. In order to |
| 87 // support it, ImageDecoder needs something analagous to its ImageFrame cache | 89 // support it, ImageDecoder needs something analagous to its ImageFrame cache |
| 88 // to hold partial planes, and the GPU code needs to handle them. | 90 // to hold partial planes, and the GPU code needs to handle them. |
| 89 bool decodeToYUV(SegmentReader*, | 91 bool decodeToYUV(SegmentReader*, |
| 90 size_t index, | 92 size_t index, |
| 91 const SkISize componentSizes[3], | 93 const SkISize componentSizes[3], |
| 92 void* planes[3], | 94 void* planes[3], |
| 93 const size_t rowBytes[3]); | 95 const size_t rowBytes[3]); |
| 94 | 96 |
| 95 const SkISize& getFullSize() const { return m_fullSize; } | 97 const SkISize& getFullSize() const { return m_fullSize; } |
| 98 sk_sp<SkColorSpace> getColorSpace() const { return m_colorSpace; } |
| 96 | 99 |
| 97 bool isMultiFrame() const { return m_isMultiFrame; } | 100 bool isMultiFrame() const { return m_isMultiFrame; } |
| 98 bool decodeFailed() const { return m_decodeFailed; } | 101 bool decodeFailed() const { return m_decodeFailed; } |
| 99 | 102 |
| 100 bool hasAlpha(size_t index); | 103 bool hasAlpha(size_t index); |
| 101 | 104 |
| 102 // Must not be called unless the SkROBuffer has all the data. YUV decoding | 105 // Must not be called unless the SkROBuffer has all the data. YUV decoding |
| 103 // does not currently support progressive decoding. See comment above on | 106 // does not currently support progressive decoding. See comment above on |
| 104 // decodeToYUV(). | 107 // decodeToYUV(). |
| 105 bool getYUVComponentSizes(SegmentReader*, SkYUVSizeInfo*); | 108 bool getYUVComponentSizes(SegmentReader*, SkYUVSizeInfo*); |
| 106 | 109 |
| 107 private: | 110 private: |
| 108 ImageFrameGenerator(const SkISize& fullSize, bool isMultiFrame); | 111 ImageFrameGenerator(const SkISize& fullSize, |
| 112 sk_sp<SkColorSpace>, |
| 113 bool isMultiFrame); |
| 109 | 114 |
| 110 friend class ImageFrameGeneratorTest; | 115 friend class ImageFrameGeneratorTest; |
| 111 friend class DeferredImageDecoderTest; | 116 friend class DeferredImageDecoderTest; |
| 112 // For testing. |factory| will overwrite the default ImageDecoder creation | 117 // For testing. |factory| will overwrite the default ImageDecoder creation |
| 113 // logic if |factory->create()| returns non-zero. | 118 // logic if |factory->create()| returns non-zero. |
| 114 void setImageDecoderFactory(std::unique_ptr<ImageDecoderFactory> factory) { | 119 void setImageDecoderFactory(std::unique_ptr<ImageDecoderFactory> factory) { |
| 115 m_imageDecoderFactory = std::move(factory); | 120 m_imageDecoderFactory = std::move(factory); |
| 116 } | 121 } |
| 117 | 122 |
| 118 void setHasAlpha(size_t index, bool hasAlpha); | 123 void setHasAlpha(size_t index, bool hasAlpha); |
| 119 | 124 |
| 120 SkBitmap tryToResumeDecode(SegmentReader*, | 125 SkBitmap tryToResumeDecode(SegmentReader*, |
| 121 bool allDataReceived, | 126 bool allDataReceived, |
| 122 size_t index, | 127 size_t index, |
| 123 const SkISize& scaledSize, | 128 const SkISize& scaledSize, |
| 124 SkBitmap::Allocator*); | 129 SkBitmap::Allocator*); |
| 125 // This method should only be called while m_decodeMutex is locked. | 130 // This method should only be called while m_decodeMutex is locked. |
| 126 bool decode(SegmentReader*, | 131 bool decode(SegmentReader*, |
| 127 bool allDataReceived, | 132 bool allDataReceived, |
| 128 size_t index, | 133 size_t index, |
| 129 ImageDecoder**, | 134 ImageDecoder**, |
| 130 SkBitmap*, | 135 SkBitmap*, |
| 131 SkBitmap::Allocator*); | 136 SkBitmap::Allocator*); |
| 132 | 137 |
| 133 const SkISize m_fullSize; | 138 const SkISize m_fullSize; |
| 139 sk_sp<SkColorSpace> m_colorSpace; |
| 134 | 140 |
| 135 const bool m_isMultiFrame; | 141 const bool m_isMultiFrame; |
| 136 bool m_decodeFailed; | 142 bool m_decodeFailed; |
| 137 bool m_yuvDecodingFailed; | 143 bool m_yuvDecodingFailed; |
| 138 size_t m_frameCount; | 144 size_t m_frameCount; |
| 139 Vector<bool> m_hasAlpha; | 145 Vector<bool> m_hasAlpha; |
| 140 | 146 |
| 141 std::unique_ptr<ImageDecoderFactory> m_imageDecoderFactory; | 147 std::unique_ptr<ImageDecoderFactory> m_imageDecoderFactory; |
| 142 | 148 |
| 143 // Prevents multiple decode operations on the same data. | 149 // Prevents multiple decode operations on the same data. |
| 144 Mutex m_decodeMutex; | 150 Mutex m_decodeMutex; |
| 145 | 151 |
| 146 // Protect concurrent access to m_hasAlpha. | 152 // Protect concurrent access to m_hasAlpha. |
| 147 Mutex m_alphaMutex; | 153 Mutex m_alphaMutex; |
| 148 }; | 154 }; |
| 149 | 155 |
| 150 } // namespace blink | 156 } // namespace blink |
| 151 | 157 |
| 152 #endif | 158 #endif |
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