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/*
* Copyright (C) 2020-2025 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 "NativeImage.h"
#include "FloatRect.h"
#include "GraphicsContext.h"
#include "ImageBuffer.h"
#include "RenderingMode.h"
#if USE(SKIA)
#include "GLFence.h"
#endif
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(NativeImage);
NativeImageBackend::NativeImageBackend() = default;
NativeImageBackend::~NativeImageBackend() = default;
bool NativeImageBackend::isRemoteNativeImageBackendProxy() const
{
return false;
}
PlatformImageNativeImageBackend::~PlatformImageNativeImageBackend() = default;
const PlatformImagePtr& PlatformImageNativeImageBackend::platformImage() const
{
return m_platformImage;
}
PlatformImageNativeImageBackend::PlatformImageNativeImageBackend(PlatformImagePtr platformImage)
: m_platformImage(WTFMove(platformImage))
{
}
#if !USE(CG)
RefPtr<NativeImage> NativeImage::create(PlatformImagePtr&& platformImage, RenderingResourceIdentifier identifier)
{
if (!platformImage)
return nullptr;
UniqueRef<PlatformImageNativeImageBackend> backend { *new PlatformImageNativeImageBackend(WTFMove(platformImage)) };
return adoptRef(*new NativeImage(WTFMove(backend), identifier));
}
RefPtr<NativeImage> NativeImage::createTransient(PlatformImagePtr&& image, RenderingResourceIdentifier identifier)
{
return create(WTFMove(image), identifier);
}
#endif
NativeImage::NativeImage(UniqueRef<NativeImageBackend> backend, RenderingResourceIdentifier renderingResourceIdentifier)
: RenderingResource(renderingResourceIdentifier)
, m_backend(WTFMove(backend))
{
}
NativeImage::~NativeImage()
{
for (auto& observer : m_observers)
observer.willDestroyNativeImage(renderingResourceIdentifier());
}
const PlatformImagePtr& NativeImage::platformImage() const
{
return m_backend->platformImage();
}
IntSize NativeImage::size() const
{
return m_backend->size();
}
bool NativeImage::hasAlpha() const
{
return m_backend->hasAlpha();
}
DestinationColorSpace NativeImage::colorSpace() const
{
return m_backend->colorSpace();
}
bool NativeImage::hasHDRContent() const
{
return colorSpace().usesITUR_2100TF();
}
Headroom NativeImage::headroom() const
{
return m_backend->headroom();
}
void NativeImage::drawWithToneMapping(GraphicsContext& context, const FloatRect& destinationRect, const FloatRect& sourceRect, ImagePaintingOptions options)
{
ASSERT(hasHDRContent());
auto colorSpaceForToneMapping = [](GraphicsContext& context) {
#if PLATFORM(IOS_FAMILY)
// iOS typically renders into extended range sRGB to preserve wide gamut colors, but here we want
// a non-dynamic but extended-range colorspace such that the contents are tone mapped to SDR range.
UNUSED_PARAM(context);
return DestinationColorSpace::DisplayP3();
#else
// Otherwise, match the colorSpace of the GraphicsContext even if it is dynamic-extended-range.
// The BGRA8 pixel format of the intermediate ImageBuffer will force the tone-mapping.
return context.colorSpace();
#endif
};
auto imageBuffer = context.createScaledImageBuffer(destinationRect, context.scaleFactor(), colorSpaceForToneMapping(context), RenderingMode::Unaccelerated, RenderingMethod::Local);
if (!imageBuffer)
return;
imageBuffer->context().drawNativeImageInternal(*this, destinationRect, sourceRect, options);
auto sourceRectScaled = FloatRect { { }, sourceRect.size() };
auto scaleFactor = destinationRect.size() / sourceRect.size();
sourceRectScaled.scale(scaleFactor * context.scaleFactor());
context.drawImageBuffer(*imageBuffer, destinationRect, sourceRectScaled, { });
}
void NativeImage::replaceBackend(UniqueRef<NativeImageBackend> backend)
{
m_backend = WTFMove(backend);
}
} // namespace WebCore
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