2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
3 * Copyright (C) 2008-2009 Torch Mobile, Inc.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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27 #ifndef JPEGImageDecoder_h
28 #define JPEGImageDecoder_h
30 #include "ImageDecoder.h"
31 #include <wtf/OwnPtr.h>
35 class JPEGImageReader;
37 // This class decodes the JPEG image format.
38 class JPEGImageDecoder : public ImageDecoder {
40 JPEGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption);
41 virtual ~JPEGImageDecoder();
44 virtual String filenameExtension() const { return "jpg"; }
45 virtual bool isSizeAvailable();
46 virtual bool setSize(unsigned width, unsigned height);
47 virtual ImageFrame* frameBufferAtIndex(size_t index);
48 // CAUTION: setFailed() deletes |m_reader|. Be careful to avoid
49 // accessing deleted memory, especially when calling this from inside
51 virtual bool setFailed();
53 bool outputScanlines();
56 void setColorProfile(const ColorProfile& colorProfile) { m_colorProfile = colorProfile; }
59 // Decodes the image. If |onlySize| is true, stops decoding after
60 // calculating the image size. If decoding fails but there is no more
61 // data coming, sets the "decode failure" flag.
62 void decode(bool onlySize);
64 OwnPtr<JPEGImageReader> m_reader;
67 } // namespace WebCore