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