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/*
* Copyright (C) 2016-2023 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 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.
*/
#include "config.h"
#include "ImageFrame.h"
#include <wtf/NeverDestroyed.h>
namespace WebCore {
ImageFrame::ImageFrame()
{
}
ImageFrame::~ImageFrame()
{
clearImage();
}
const ImageFrame& ImageFrame::defaultFrame()
{
static NeverDestroyed<ImageFrame> sharedInstance;
return sharedInstance;
}
ImageFrame& ImageFrame::operator=(const ImageFrame& other)
{
if (this == &other)
return *this;
m_decodingStatus = other.m_decodingStatus;
m_size = other.m_size;
m_nativeImage = other.m_nativeImage;
m_subsamplingLevel = other.m_subsamplingLevel;
m_decodingOptions = other.m_decodingOptions;
m_orientation = other.m_orientation;
m_duration = other.m_duration;
m_hasAlpha = other.m_hasAlpha;
return *this;
}
void ImageFrame::setDecodingStatus(DecodingStatus decodingStatus)
{
ASSERT(decodingStatus != DecodingStatus::Decoding);
m_decodingStatus = decodingStatus;
}
DecodingStatus ImageFrame::decodingStatus() const
{
ASSERT(m_decodingStatus != DecodingStatus::Decoding);
return m_decodingStatus;
}
unsigned ImageFrame::clearImage()
{
if (!hasNativeImage())
return 0;
unsigned frameBytes = this->frameBytes();
m_nativeImage->clearSubimages();
m_nativeImage = nullptr;
m_decodingOptions = DecodingOptions();
return frameBytes;
}
unsigned ImageFrame::clear()
{
unsigned frameBytes = clearImage();
*this = ImageFrame();
return frameBytes;
}
IntSize ImageFrame::size() const
{
return m_size;
}
bool ImageFrame::hasNativeImage(const std::optional<SubsamplingLevel>& subsamplingLevel) const
{
return m_nativeImage && (!subsamplingLevel || *subsamplingLevel >= m_subsamplingLevel);
}
bool ImageFrame::hasFullSizeNativeImage(const std::optional<SubsamplingLevel>& subsamplingLevel) const
{
return hasNativeImage(subsamplingLevel) && m_decodingOptions.hasFullSize();
}
bool ImageFrame::hasDecodedNativeImageCompatibleWithOptions(const std::optional<SubsamplingLevel>& subsamplingLevel, const DecodingOptions& decodingOptions) const
{
return isComplete() && hasNativeImage(subsamplingLevel) && m_decodingOptions.isCompatibleWith(decodingOptions);
}
Color ImageFrame::singlePixelSolidColor() const
{
if (!hasNativeImage() || m_size != IntSize(1, 1))
return Color();
return m_nativeImage->singlePixelSolidColor();
}
} // namespace WebCore
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