| /* |
| * Copyright (C) 2010 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. |
| * 3. Neither the name of Apple Inc. ("Apple") nor the names of |
| * its contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #include "ScalableImageDecoder.h" |
| |
| #if USE(WEBP) |
| |
| #include "webp/decode.h" |
| #include "webp/demux.h" |
| |
| namespace WebCore { |
| |
| class WEBPImageDecoder final : public ScalableImageDecoder { |
| public: |
| static Ref<ScalableImageDecoder> create(AlphaOption alphaOption, GammaAndColorProfileOption gammaAndColorProfileOption) |
| { |
| return adoptRef(*new WEBPImageDecoder(alphaOption, gammaAndColorProfileOption)); |
| } |
| |
| virtual ~WEBPImageDecoder(); |
| |
| String filenameExtension() const override { return ASCIILiteral("webp"); } |
| void setData(SharedBuffer&, bool) final; |
| ImageFrame* frameBufferAtIndex(size_t index) override; |
| RepetitionCount repetitionCount() const override; |
| size_t frameCount() const override { return m_frameCount; } |
| void clearFrameBufferCache(size_t) override; |
| |
| private: |
| WEBPImageDecoder(AlphaOption, GammaAndColorProfileOption); |
| void tryDecodeSize(bool) override { parseHeader(); } |
| void decode(size_t, bool); |
| void decodeFrame(size_t, WebPDemuxer*); |
| void parseHeader(); |
| bool initFrameBuffer(size_t, const WebPIterator*); |
| void applyPostProcessing(size_t, WebPIDecoder*, WebPDecBuffer&, bool); |
| size_t findFirstRequiredFrameToDecode(size_t, WebPDemuxer*); |
| |
| int m_repetitionCount { 0 }; |
| size_t m_frameCount { 0 }; |
| int m_formatFlags { 0 }; |
| bool m_headerParsed { false }; |
| }; |
| |
| } // namespace WebCore |
| |
| #endif |