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/*
* Copyright (C) 2022 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 "SourceImage.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "NativeImage.h"
namespace WebCore {
SourceImage::SourceImage(ImageVariant&& imageVariant)
: m_imageVariant(WTFMove(imageVariant))
{
}
SourceImage::SourceImage(const SourceImage&) = default;
SourceImage::SourceImage(SourceImage&&) = default;
SourceImage& SourceImage::operator=(const SourceImage&) = default;
SourceImage& SourceImage::operator=(SourceImage&&) = default;
SourceImage::~SourceImage() = default;
bool SourceImage::operator==(const SourceImage& other) const
{
return imageIdentifier() == other.imageIdentifier();
}
static inline NativeImage* nativeImageOf(const SourceImage::ImageVariant& imageVariant)
{
if (auto* nativeImage = std::get_if<Ref<NativeImage>>(&imageVariant))
return nativeImage->ptr();
return nullptr;
}
NativeImage* SourceImage::nativeImageIfExists() const
{
return nativeImageOf(m_imageVariant);
}
NativeImage* SourceImage::nativeImage() const
{
if (!std::holds_alternative<Ref<ImageBuffer>>(m_imageVariant))
return nativeImageIfExists();
if (!m_transformedImageVariant) {
auto imageBuffer = std::get<Ref<ImageBuffer>>(m_imageVariant);
auto nativeImage = imageBuffer->createNativeImageReference();
if (!nativeImage)
return nullptr;
m_transformedImageVariant = { nativeImage.releaseNonNull() };
}
ASSERT(m_transformedImageVariant);
return nativeImageOf(*m_transformedImageVariant);
}
static inline ImageBuffer* imageBufferOf(const SourceImage::ImageVariant& imageVariant)
{
if (auto* imageBuffer = std::get_if<Ref<ImageBuffer>>(&imageVariant))
return imageBuffer->ptr();
return nullptr;
}
ImageBuffer* SourceImage::imageBufferIfExists() const
{
return imageBufferOf(m_imageVariant);
}
ImageBuffer* SourceImage::imageBuffer() const
{
if (!std::holds_alternative<Ref<NativeImage>>(m_imageVariant))
return imageBufferIfExists();
if (!m_transformedImageVariant) {
auto nativeImage = std::get<Ref<NativeImage>>(m_imageVariant);
auto rect = FloatRect { { }, nativeImage->size() };
auto imageBuffer = ImageBuffer::create(nativeImage->size(), RenderingMode::Unaccelerated, RenderingPurpose::Unspecified, 1, DestinationColorSpace::SRGB(), ImageBufferPixelFormat::BGRA8);
if (!imageBuffer)
return nullptr;
imageBuffer->context().drawNativeImage(nativeImage, rect, rect);
m_transformedImageVariant = { imageBuffer.releaseNonNull() };
}
ASSERT(m_transformedImageVariant);
return imageBufferOf(*m_transformedImageVariant);
}
RenderingResourceIdentifier SourceImage::imageIdentifier() const
{
return WTF::switchOn(m_imageVariant,
[&] (const Ref<NativeImage>& nativeImage) {
return nativeImage->renderingResourceIdentifier();
},
[&] (const Ref<ImageBuffer>& imageBuffer) {
return imageBuffer->renderingResourceIdentifier();
},
[&] (RenderingResourceIdentifier renderingResourceIdentifier) {
return renderingResourceIdentifier;
}
);
}
IntSize SourceImage::size() const
{
return WTF::switchOn(m_imageVariant,
[&] (const Ref<NativeImage>& nativeImage) {
return nativeImage->size();
},
[&] (const Ref<ImageBuffer>& imageBuffer) {
return imageBuffer->backendSize();
},
[&] (RenderingResourceIdentifier) -> IntSize {
ASSERT_NOT_REACHED();
return { };
}
);
}
} // namespace WebCore
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