| /* |
| * Copyright (C) 2013 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 AND ITS CONTRIBUTORS "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 OR ITS 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 DecodingImageGenerator_h |
| #define DecodingImageGenerator_h |
| |
| #include "SkImageGenerator.h" |
| #include "SkImageInfo.h" |
| |
| #include "wtf/RefPtr.h" |
| |
| class SkData; |
| |
| namespace WebCore { |
| |
| class ImageFrameGenerator; |
| |
| // Implements SkImageGenerator and used by SkPixelRef to populate a discardable |
| // memory with decoded pixels. |
| // |
| // This class does not own an ImageDecode. It does not own encoded data. It serves |
| // as and adapter to ImageFrameGenerator which actually performs decoding. |
| class DecodingImageGenerator : public SkImageGenerator { |
| public: |
| DecodingImageGenerator(PassRefPtr<ImageFrameGenerator>, const SkImageInfo&, size_t index); |
| virtual ~DecodingImageGenerator(); |
| |
| // SkImageGenerator implementation. |
| virtual SkData* refEncodedData(); |
| virtual bool getInfo(SkImageInfo*); |
| virtual bool getPixels(const SkImageInfo&, void* pixels, size_t rowBytes); |
| |
| void setGenerationId(size_t id) { m_generationId = id; } |
| |
| private: |
| RefPtr<ImageFrameGenerator> m_frameGenerator; |
| SkImageInfo m_imageInfo; |
| size_t m_frameIndex; |
| size_t m_generationId; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif // DecodingImageGenerator_h_ |