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/*
* Copyright (C) 2021 Sony Interactive Entertainment Inc.
* Copyright (C) 2023 Apple Inc. All rights reserved.
*
* 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 COMPUTER, 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 COMPUTER, 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"
#if USE(JPEGXL)
#include "JxlDecoderPtr.h"
#if USE(LCMS)
#include "LCMSUniquePtr.h"
#elif USE(CG)
#include <CoreGraphics/CoreGraphics.h>
#include <wtf/RetainPtr.h>
#endif
namespace WebCore {
// This class decodes the JPEG XL image format.
class JPEGXLImageDecoder final : public ScalableImageDecoder {
public:
static RefPtr<ScalableImageDecoder> create(AlphaOption, GammaAndColorProfileOption);
virtual ~JPEGXLImageDecoder();
// ScalableImageDecoder
String filenameExtension() const override { return "jxl"_s; }
size_t frameCount() const override WTF_REQUIRES_LOCK(m_lock);
RepetitionCount repetitionCount() const override;
ScalableImageDecoderFrame* frameBufferAtIndex(size_t index) override WTF_REQUIRES_LOCK(m_lock);
void clearFrameBufferCache(size_t clearBeforeFrame) override WTF_REQUIRES_LOCK(m_lock);
bool setFailed() override;
private:
enum class Query {
// This query is used for tryDecodeSize().
Size,
// We define a query for frame count because JPEG XL doesn't have frame count information in its code stream
// so we need to scan the code stream to get the frame count for animated JPEG XL.
// JPEG XL container can have frame count metadata but currently libjxl doesn't support it.
FrameCount,
// Query to decode a single frame.
DecodedImage,
};
JPEGXLImageDecoder(AlphaOption, GammaAndColorProfileOption);
void clear();
void tryDecodeSize(bool allDataReceived) override WTF_REQUIRES_LOCK(m_lock);
bool hasAlpha() const;
bool hasAnimation() const;
void ensureDecoderInitialized();
bool shouldRewind(Query , size_t frameIndex) const;
void rewind();
void updateFrameCount() WTF_REQUIRES_LOCK(m_lock);
void decode(Query, size_t frameIndex, bool allDataReceived) WTF_REQUIRES_LOCK(m_lock);
JxlDecoderStatus processInput(Query) WTF_REQUIRES_LOCK(m_lock);
static void imageOutCallback(void*, size_t x, size_t y, size_t numPixels, const void* pixels);
void imageOut(size_t x, size_t y, size_t numPixels, const uint8_t* pixels) WTF_REQUIRES_LOCK(m_lock);
void clearColorTransform();
void prepareColorTransform();
void maybePerformColorSpaceConversion(void* inputBuffer, void* outputBuffer, unsigned numberOfPixels);
#if USE(LCMS)
LCMSProfilePtr tryDecodeICCColorProfile();
#elif USE(CG)
RetainPtr<CGColorSpaceRef> tryDecodeICCColorProfile();
#endif
JxlDecoderPtr m_decoder;
size_t m_readOffset { 0 };
std::optional<JxlBasicInfo> m_basicInfo;
Query m_lastQuery { Query::Size };
size_t m_frameCount { 1 };
size_t m_currentFrame { 0 };
bool m_isLastFrameHeaderReceived { false }; // If this is true, we know we don't need to update m_frameCount.
#if USE(LCMS)
LCMSTransformPtr m_iccTransform;
#elif USE(CG)
RetainPtr<CGColorSpaceRef> m_profile;
#endif
};
} // namespace WebCore
#endif // USE(JPEGXL)
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