1 /* 2 * Copyright (C) 2010 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 14 * its contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY 18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #ifndef WEBPImageDecoder_h 30 #define WEBPImageDecoder_h 31 32 #include "ImageDecoder.h" 33 34 #if USE(WEBP) 35 36 // Forward declaration of libwebp's structure. Must be outside the WebCore scope. 37 typedef struct WebPIDecoder WebPIDecoder; 38 39 namespace WebCore { 40 41 class WEBPImageDecoder : public ImageDecoder { 42 public: 43 WEBPImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption); 44 virtual ~WEBPImageDecoder(); 45 virtual String filenameExtension() const { return "vp8"; } 46 virtual bool isSizeAvailable(); 47 virtual ImageFrame* frameBufferAtIndex(size_t index); 48 49 private: 50 // Returns false in case of decoding failure. 51 bool decode(bool onlySize); 52 53 WebPIDecoder* m_decoder; // This is only used when we want to decode() but not all data is available yet. 54 int m_lastVisibleRow; 55 Vector<uint8_t> m_rgbOutput; 56 }; 57 58 } // namespace WebCore 59 60 #endif 61 62 #endif 63
