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26 #ifndef DeferredImageDecoder_h
27 #define DeferredImageDecoder_h
30 #include "SkPixelRef.h"
31 #include "platform/PlatformExport.h"
32 #include "platform/geometry/IntSize.h"
33 #include "platform/graphics/ImageFrameGenerator.h"
34 #include "platform/graphics/ImageSource.h"
35 #include "platform/image-decoders/ImageDecoder.h"
36 #include "wtf/Forward.h"
37 #include "wtf/OwnPtr.h"
38 #include "wtf/Vector.h"
42 class ImageFrameGenerator;
45 class PLATFORM_EXPORT DeferredImageDecoder {
46 WTF_MAKE_NONCOPYABLE(DeferredImageDecoder);
48 ~DeferredImageDecoder();
49 static PassOwnPtr<DeferredImageDecoder> create(const SharedBuffer& data, ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
51 static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
53 static bool isLazyDecoded(const SkBitmap&);
55 static void setEnabled(bool);
56 static bool enabled();
58 String filenameExtension() const;
60 ImageFrame* frameBufferAtIndex(size_t index);
62 void setData(SharedBuffer& data, bool allDataReceived);
64 bool isSizeAvailable();
65 bool hasColorProfile() const;
67 IntSize frameSizeAtIndex(size_t index) const;
69 int repetitionCount() const;
70 size_t clearCacheExceptFrame(size_t);
71 bool frameHasAlphaAtIndex(size_t index) const;
72 bool frameIsCompleteAtIndex(size_t) const;
73 float frameDurationAtIndex(size_t) const;
74 unsigned frameBytesAtIndex(size_t index) const;
75 ImageOrientation orientation() const;
76 bool hotSpot(IntPoint&) const;
79 ImageFrameGenerator* frameGenerator() { return m_frameGenerator.get(); }
82 explicit DeferredImageDecoder(PassOwnPtr<ImageDecoder> actualDecoder);
83 void prepareLazyDecodedFrames();
84 SkBitmap createBitmap(size_t index);
85 void activateLazyDecoding();
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;
97 bool m_hasColorProfile;
99 Vector<OwnPtr<ImageFrame> > m_lazyDecodedFrames;
100 RefPtr<ImageFrameGenerator> m_frameGenerator;
102 static bool s_enabled;