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/*
* Copyright (C) 2006 Apple Inc. All rights reserved.
* Copyright (C) 2008-2009 Torch Mobile, Inc.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. OR
* 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"
#include <stdio.h> // Needed by jpeglib.h for FILE.
// ICU defines TRUE and FALSE macros, breaking libjpeg v9 headers
#undef TRUE
#undef FALSE
#if USE(LCMS)
#include "LCMSUniquePtr.h"
#endif
extern "C" {
#include <jpeglib.h>
}
namespace WebCore {
class JPEGImageReader;
// This class decodes the JPEG image format.
class JPEGImageDecoder final : public ScalableImageDecoder {
public:
static Ref<ScalableImageDecoder> create(AlphaOption alphaOption, GammaAndColorProfileOption gammaAndColorProfileOption)
{
return adoptRef(*new JPEGImageDecoder(alphaOption, gammaAndColorProfileOption));
}
virtual ~JPEGImageDecoder();
// ScalableImageDecoder
String filenameExtension() const override { return "jpg"_s; }
ScalableImageDecoderFrame* frameBufferAtIndex(size_t index) override;
// CAUTION: setFailed() deletes |m_reader|. Be careful to avoid
// accessing deleted memory, especially when calling this from inside
// JPEGImageReader!
bool setFailed() override;
bool outputScanlines();
void jpegComplete();
void setOrientation(ImageOrientation orientation) { m_orientation = orientation; }
#if USE(LCMS)
void setICCProfile(RefPtr<SharedBuffer>&&);
#endif
private:
JPEGImageDecoder(AlphaOption, GammaAndColorProfileOption);
void tryDecodeSize(bool allDataReceived) override { decode(true, allDataReceived); }
// Decodes the image. If |onlySize| is true, stops decoding after
// calculating the image size. If decoding fails but there is no more
// data coming, sets the "decode failure" flag.
void decode(bool onlySize, bool allDataReceived);
template <J_COLOR_SPACE colorSpace>
bool outputScanlines(ScalableImageDecoderFrame& buffer);
template <J_COLOR_SPACE colorSpace, bool isScaled>
bool outputScanlines(ScalableImageDecoderFrame& buffer);
void clear();
std::unique_ptr<JPEGImageReader> m_reader;
#if USE(LCMS)
LCMSTransformPtr m_iccTransform;
#endif
};
} // namespace WebCore
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