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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
86 lines
3.6 KiB
C++
86 lines
3.6 KiB
C++
/*
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* Copyright (C) 2006 Apple Computer, Inc. All rights reserved.
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* Copyright (C) 2008-2009 Torch Mobile, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SKY_ENGINE_PLATFORM_IMAGE_DECODERS_JPEG_JPEGIMAGEDECODER_H_
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#define SKY_ENGINE_PLATFORM_IMAGE_DECODERS_JPEG_JPEGIMAGEDECODER_H_
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#include "platform/image-decoders/ImageDecoder.h"
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#include "sky/engine/wtf/Noncopyable.h"
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#include "sky/engine/wtf/OwnPtr.h"
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namespace blink {
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class JPEGImageReader;
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// This class decodes the JPEG image format.
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class PLATFORM_EXPORT JPEGImageDecoder : public ImageDecoder {
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WTF_MAKE_NONCOPYABLE(JPEGImageDecoder);
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public:
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JPEGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption, size_t maxDecodedBytes);
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virtual ~JPEGImageDecoder();
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// ImageDecoder
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virtual String filenameExtension() const override { return "jpg"; }
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virtual bool isSizeAvailable() override;
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virtual bool hasColorProfile() const override { return m_hasColorProfile; }
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virtual IntSize decodedSize() const override { return m_decodedSize; }
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virtual IntSize decodedYUVSize(int component) const override;
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virtual bool setSize(unsigned width, unsigned height) override;
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virtual ImageFrame* frameBufferAtIndex(size_t) override;
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// CAUTION: setFailed() deletes |m_reader|. Be careful to avoid
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// accessing deleted memory, especially when calling this from inside
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// JPEGImageReader!
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virtual bool setFailed() override;
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virtual bool canDecodeToYUV() const override;
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virtual bool decodeToYUV() override;
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virtual void setImagePlanes(PassOwnPtr<ImagePlanes>) override;
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bool hasImagePlanes() const { return m_imagePlanes; }
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bool outputScanlines();
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unsigned desiredScaleNumerator() const;
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void jpegComplete();
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void setOrientation(ImageOrientation orientation) { m_orientation = orientation; }
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void setHasColorProfile(bool hasColorProfile) { m_hasColorProfile = hasColorProfile; }
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void setDecodedSize(unsigned width, unsigned height);
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private:
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// Decodes the image. If |onlySize| is true, stops decoding after
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// calculating the image size. If decoding fails but there is no more
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// data coming, sets the "decode failure" flag.
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void decode(bool onlySize);
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OwnPtr<JPEGImageReader> m_reader;
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OwnPtr<ImagePlanes> m_imagePlanes;
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IntSize m_decodedSize;
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bool m_hasColorProfile;
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};
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} // namespace blink
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#endif // SKY_ENGINE_PLATFORM_IMAGE_DECODERS_JPEG_JPEGIMAGEDECODER_H_
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