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108 lines
3.9 KiB
C++
108 lines
3.9 KiB
C++
/*
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* Copyright (C) 2012 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_DEFERREDIMAGEDECODER_H_
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#define SKY_ENGINE_PLATFORM_GRAPHICS_DEFERREDIMAGEDECODER_H_
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#include "platform/image-decoders/ImageDecoder.h"
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#include "sky/engine/platform/PlatformExport.h"
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#include "sky/engine/platform/geometry/IntSize.h"
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#include "sky/engine/platform/graphics/ImageFrameGenerator.h"
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#include "sky/engine/platform/graphics/ImageSource.h"
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#include "sky/engine/wtf/Forward.h"
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#include "sky/engine/wtf/OwnPtr.h"
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#include "sky/engine/wtf/Vector.h"
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#include "third_party/skia/include/core/SkBitmap.h"
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#include "third_party/skia/include/core/SkPixelRef.h"
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namespace blink {
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class ImageFrameGenerator;
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class SharedBuffer;
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class PLATFORM_EXPORT DeferredImageDecoder {
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WTF_MAKE_NONCOPYABLE(DeferredImageDecoder);
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public:
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~DeferredImageDecoder();
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static PassOwnPtr<DeferredImageDecoder> create(const SharedBuffer& data, ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
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static PassOwnPtr<DeferredImageDecoder> createForTesting(PassOwnPtr<ImageDecoder>);
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static bool isLazyDecoded(const SkBitmap&);
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static void setEnabled(bool);
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static bool enabled();
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String filenameExtension() const;
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ImageFrame* frameBufferAtIndex(size_t index);
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void setData(SharedBuffer& data, bool allDataReceived);
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bool isSizeAvailable();
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bool hasColorProfile() const;
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IntSize size() const;
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IntSize frameSizeAtIndex(size_t index) const;
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size_t frameCount();
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int repetitionCount() const;
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size_t clearCacheExceptFrame(size_t);
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bool frameHasAlphaAtIndex(size_t index) const;
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bool frameIsCompleteAtIndex(size_t) const;
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float frameDurationAtIndex(size_t) const;
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unsigned frameBytesAtIndex(size_t index) const;
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ImageOrientation orientation() const;
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bool hotSpot(IntPoint&) const;
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// For testing.
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ImageFrameGenerator* frameGenerator() { return m_frameGenerator.get(); }
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private:
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explicit DeferredImageDecoder(PassOwnPtr<ImageDecoder> actualDecoder);
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void prepareLazyDecodedFrames();
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SkBitmap createBitmap(size_t index);
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void activateLazyDecoding();
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RefPtr<SharedBuffer> m_data;
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bool m_allDataReceived;
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unsigned m_lastDataSize;
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bool m_dataChanged;
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OwnPtr<ImageDecoder> m_actualDecoder;
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String m_filenameExtension;
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IntSize m_size;
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ImageOrientation m_orientation;
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int m_repetitionCount;
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bool m_hasColorProfile;
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Vector<OwnPtr<ImageFrame> > m_lazyDecodedFrames;
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RefPtr<ImageFrameGenerator> m_frameGenerator;
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static bool s_enabled;
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};
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_GRAPHICS_DEFERREDIMAGEDECODER_H_
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