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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. AND ITS CONTRIBUTORS ``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 ITS 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 "ImageBufferShareableAllocator.h"
#include "ImageBufferShareableBitmapBackend.h"
#include "ShareablePixelBuffer.h"
#include <WebCore/GraphicsContext.h>
#include <WebCore/ImageBuffer.h>
#if ENABLE(GPU_PROCESS)
namespace WebKit {
using namespace WebCore;
ImageBufferShareableAllocator::ImageBufferShareableAllocator(const ProcessIdentity& resourceOwner)
: m_resourceOwner(resourceOwner)
{
}
RefPtr<ImageBuffer> ImageBufferShareableAllocator::createImageBuffer(const FloatSize& size, const DestinationColorSpace& colorSpace, RenderingMode) const
{
RefPtr<ImageBuffer> imageBuffer = ImageBuffer::create<ImageBufferShareableBitmapBackend>(size, 1, colorSpace, PixelFormat::BGRA8, RenderingPurpose::Unspecified, { });
if (!imageBuffer)
return nullptr;
auto* backend = imageBuffer->backend();
if (!backend)
return nullptr;
auto* sharing = backend->toBackendSharing();
ASSERT(is<ImageBufferBackendHandleSharing>(sharing));
auto bitmap = downcast<ImageBufferBackendHandleSharing>(*sharing).bitmap();
if (!bitmap)
return nullptr;
auto handle = bitmap->createHandle();
if (!handle)
return nullptr;
transferMemoryOwnership(WTFMove(handle->handle()));
return imageBuffer;
}
RefPtr<PixelBuffer> ImageBufferShareableAllocator::createPixelBuffer(const PixelBufferFormat& format, const IntSize& size) const
{
auto pixelBuffer = ShareablePixelBuffer::tryCreate(format, size);
if (!pixelBuffer)
return nullptr;
auto handle = pixelBuffer->data().createHandle(SharedMemory::Protection::ReadOnly);
if (!handle)
return nullptr;
transferMemoryOwnership(WTFMove(*handle));
return pixelBuffer;
}
void ImageBufferShareableAllocator::transferMemoryOwnership(SharedMemory::Handle&& handle) const
{
handle.setOwnershipOfMemory(m_resourceOwner, MemoryLedger::Graphics);
}
} // namespace WebKit
#endif // ENABLE(GPU_PROCESS)
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