| /* |
| * 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 "platform/PlatformExport.h" |
| #include "platform/image-decoders/SegmentReader.h" |
| #include "third_party/skia/include/core/SkImageGenerator.h" |
| #include "third_party/skia/include/core/SkImageInfo.h" |
| #include "wtf/Allocator.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/PassRefPtr.h" |
| #include "wtf/RefPtr.h" |
| |
| class SkData; |
| |
| namespace blink { |
| |
| class ImageFrameGenerator; |
| |
| // Implements SkImageGenerator, used by SkPixelRef to populate a discardable |
| // memory with a decoded image frame. ImageFrameGenerator does the actual |
| // decoding. |
| class PLATFORM_EXPORT DecodingImageGenerator final : public SkImageGenerator { |
| USING_FAST_MALLOC(DecodingImageGenerator); |
| WTF_MAKE_NONCOPYABLE(DecodingImageGenerator); |
| |
| public: |
| // Make SkImageGenerator::kNeedNewImageUniqueID accessible. |
| enum { kNeedNewImageUniqueID = SkImageGenerator::kNeedNewImageUniqueID }; |
| |
| static SkImageGenerator* create(SkData*); |
| |
| DecodingImageGenerator(PassRefPtr<ImageFrameGenerator>, |
| const SkImageInfo&, |
| PassRefPtr<SegmentReader>, |
| bool allDataReceived, |
| size_t index, |
| uint32_t uniqueID = kNeedNewImageUniqueID); |
| ~DecodingImageGenerator() override; |
| |
| void setCanYUVDecode(bool yes) { m_canYUVDecode = yes; } |
| |
| protected: |
| SkData* onRefEncodedData(GrContext* ctx) override; |
| |
| bool onGetPixels(const SkImageInfo&, |
| void* pixels, |
| size_t rowBytes, |
| SkPMColor table[], |
| int* tableCount) override; |
| |
| bool onQueryYUV8(SkYUVSizeInfo*, SkYUVColorSpace*) const override; |
| |
| bool onGetYUV8Planes(const SkYUVSizeInfo&, void* planes[3]) override; |
| |
| private: |
| RefPtr<ImageFrameGenerator> m_frameGenerator; |
| const RefPtr<SegmentReader> m_data; // Data source. |
| const bool m_allDataReceived; |
| const size_t m_frameIndex; |
| bool m_canYUVDecode; |
| }; |
| |
| } // namespace blink |
| |
| #endif // DecodingImageGenerator_h_ |