/* * 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 "webp"_s; } void setData(SharedBuffer&, bool) final; ScalableImageDecoderFrame* 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