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26 #ifndef DeferredImageDecoder_h
27 #define DeferredImageDecoder_h
30 #include "platform/PlatformExport.h"
31 #include "platform/geometry/IntSize.h"
32 #include "platform/graphics/ImageFrameGenerator.h"
33 #include "platform/graphics/ImageSource.h"
34 #include "platform/image-decoders/ImageDecoder.h"
35 #include "wtf/Forward.h"
36 #include "wtf/OwnPtr.h"
37 #include "wtf/Vector.h"
41 class ImageFrameGenerator;
44 class PLATFORM_EXPORT DeferredImageDecoder {
45 WTF_MAKE_NONCOPYABLE(DeferredImageDecoder);
47 ~DeferredImageDecoder();
48 static PassOwnPtr<DeferredImageDecoder> create(const SharedBuffer& data, ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
50 static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
52 static bool isLazyDecoded(const SkBitmap&);
54 static void setEnabled(bool);
56 String filenameExtension() const;
58 ImageFrame* frameBufferAtIndex(size_t index);
60 void setData(SharedBuffer* data, bool allDataReceived);
62 bool isSizeAvailable();
64 IntSize frameSizeAtIndex(size_t index) const;
66 int repetitionCount() const;
67 size_t clearCacheExceptFrame(size_t);
68 bool frameHasAlphaAtIndex(size_t index) const;
69 bool frameIsCompleteAtIndex(size_t) const;
70 float frameDurationAtIndex(size_t) const;
71 unsigned frameBytesAtIndex(size_t index) const;
72 ImageOrientation orientation() const;
73 bool hotSpot(IntPoint&) const;
76 ImageFrameGenerator* frameGenerator() { return m_frameGenerator.get(); }
79 explicit DeferredImageDecoder(PassOwnPtr<ImageDecoder> actualDecoder);
80 void prepareLazyDecodedFrames();
81 SkBitmap createBitmap(size_t index);
82 SkBitmap createSkiaDiscardableBitmap(size_t index);
83 SkBitmap createLazyDecodingBitmap(size_t index);
84 void activateLazyDecoding();
85 void setData(PassRefPtr<SharedBuffer>, bool allDataReceived);
87 RefPtr<SharedBuffer> m_data;
88 bool m_allDataReceived;
89 unsigned m_lastDataSize;
91 OwnPtr<ImageDecoder> m_actualDecoder;
93 String m_filenameExtension;
95 ImageOrientation m_orientation;
96 int m_repetitionCount;
98 Vector<OwnPtr<ImageFrame> > m_lazyDecodedFrames;
99 RefPtr<ImageFrameGenerator> m_frameGenerator;
101 static bool s_enabled;
102 static bool s_skiaDiscardableMemoryEnabled;
105 } // namespace WebCore