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65 lines
2.7 KiB
C++
65 lines
2.7 KiB
C++
/*
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* Copyright (C) 2013 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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*
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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 AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY 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 OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_GRAPHICS_DECODINGIMAGEGENERATOR_H_
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#define SKY_ENGINE_PLATFORM_GRAPHICS_DECODINGIMAGEGENERATOR_H_
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#include "sky/engine/wtf/RefPtr.h"
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#include "third_party/skia/include/core/SkImageGenerator.h"
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#include "third_party/skia/include/core/SkImageInfo.h"
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class SkData;
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namespace blink {
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class ImageFrameGenerator;
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// Implements SkImageGenerator and used by SkPixelRef to populate a discardable
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// memory with decoded pixels.
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//
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// This class does not own an ImageDecode. It does not own encoded data. It serves
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// as an adapter to ImageFrameGenerator which actually performs decoding.
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class DecodingImageGenerator final : public SkImageGenerator {
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public:
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DecodingImageGenerator(PassRefPtr<ImageFrameGenerator>, const SkImageInfo&, size_t index);
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virtual ~DecodingImageGenerator();
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void setGenerationId(size_t id) { m_generationId = id; }
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protected:
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virtual SkData* onRefEncodedData() override;
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virtual bool onGetPixels(const SkImageInfo&, void* pixels, size_t rowBytes, SkPMColor ctable[], int* ctableCount) override;
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virtual bool onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3]) override;
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private:
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RefPtr<ImageFrameGenerator> m_frameGenerator;
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size_t m_frameIndex;
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size_t m_generationId;
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};
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_GRAPHICS_DECODINGIMAGEGENERATOR_H_
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