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| 1 /* | |
| 2 * Copyright (C) 2006 Apple Computer, Inc. All rights reserved. | |
| 3 * Copyright (C) 2008-2009 Torch Mobile, Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions | |
| 7 * are met: | |
| 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 * | |
| 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY | |
| 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR | |
| 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 25 */ | |
| 26 | |
| 27 #ifndef JPEGImageDecoder_h | |
| 28 #define JPEGImageDecoder_h | |
| 29 | |
| 30 #include "core/platform/image-decoders/ImageDecoder.h" | |
| 31 | |
| 32 #include "wtf/OwnPtr.h" | |
| 33 | |
| 34 namespace WebCore { | |
| 35 | |
| 36 class JPEGImageReader; | |
| 37 | |
| 38 // This class decodes the JPEG image format. | |
| 39 class JPEGImageDecoder : public ImageDecoder { | |
| 40 public: | |
| 41 JPEGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorPro
fileOption, size_t maxDecodedBytes); | |
| 42 virtual ~JPEGImageDecoder(); | |
| 43 | |
| 44 // ImageDecoder | |
| 45 virtual String filenameExtension() const OVERRIDE { return "jpg"; } | |
| 46 virtual bool isSizeAvailable() OVERRIDE; | |
| 47 virtual IntSize decodedSize() const OVERRIDE { return m_decodedSize; } | |
| 48 virtual bool setSize(unsigned width, unsigned height) OVERRIDE; | |
| 49 virtual ImageFrame* frameBufferAtIndex(size_t) OVERRIDE; | |
| 50 // CAUTION: setFailed() deletes |m_reader|. Be careful to avoid | |
| 51 // accessing deleted memory, especially when calling this from inside | |
| 52 // JPEGImageReader! | |
| 53 virtual bool setFailed() OVERRIDE; | |
| 54 | |
| 55 bool outputScanlines(); | |
| 56 void jpegComplete(); | |
| 57 | |
| 58 void setOrientation(ImageOrientation orientation) { m_orientation = orie
ntation; } | |
| 59 | |
| 60 private: | |
| 61 // Decodes the image. If |onlySize| is true, stops decoding after | |
| 62 // calculating the image size. If decoding fails but there is no more | |
| 63 // data coming, sets the "decode failure" flag. | |
| 64 void decode(bool onlySize); | |
| 65 | |
| 66 OwnPtr<JPEGImageReader> m_reader; | |
| 67 IntSize m_decodedSize; | |
| 68 }; | |
| 69 | |
| 70 } // namespace WebCore | |
| 71 | |
| 72 #endif | |
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Chromium Code Reviews
Issue 99103006:
Moving GraphicsContext and dependencies from core to platform. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk