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/*
* Copyright (C) 2021 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.
*/
#pragma once
#if ENABLE(CG_DISPLAY_LIST_BACKED_IMAGE_BUFFER)
#include "ImageBufferBackendHandleSharing.h"
#include <WebCore/ImageBuffer.h>
#include <WebCore/ImageBufferCGBackend.h>
#include <wtf/IsoMalloc.h>
namespace WebKit {
using UseOutOfLineSurfaces = WebCore::ImageBuffer::CreationContext::UseOutOfLineSurfaces;
class CGDisplayListImageBufferBackend final : public WebCore::ImageBufferCGBackend, public ImageBufferBackendHandleSharing {
WTF_MAKE_ISO_ALLOCATED(CGDisplayListImageBufferBackend);
WTF_MAKE_NONCOPYABLE(CGDisplayListImageBufferBackend);
public:
static size_t calculateMemoryCost(const Parameters&);
static std::unique_ptr<CGDisplayListImageBufferBackend> create(const Parameters&, const WebCore::ImageBuffer::CreationContext&);
WebCore::GraphicsContext& context() const final;
WebCore::IntSize backendSize() const final;
ImageBufferBackendHandle createBackendHandle(SharedMemory::Protection = SharedMemory::Protection::ReadWrite) const final;
void clearContents() final;
// NOTE: These all ASSERT_NOT_REACHED().
RefPtr<WebCore::NativeImage> copyNativeImage(WebCore::BackingStoreCopy = WebCore::CopyBackingStore) const final;
RefPtr<WebCore::PixelBuffer> getPixelBuffer(const WebCore::PixelBufferFormat& outputFormat, const WebCore::IntRect&, const WebCore::ImageBufferAllocator& = WebCore::ImageBufferAllocator()) const final;
void putPixelBuffer(const WebCore::PixelBuffer&, const WebCore::IntRect& srcRect, const WebCore::IntPoint& destPoint, WebCore::AlphaPremultiplication destFormat) final;
protected:
CGDisplayListImageBufferBackend(const Parameters&, UseOutOfLineSurfaces);
unsigned bytesPerRow() const final;
// ImageBufferBackendSharing
ImageBufferBackendSharing* toBackendSharing() final { return this; }
mutable std::unique_ptr<WebCore::GraphicsContext> m_context;
UseOutOfLineSurfaces m_useOutOfLineSurfaces;
};
}
#endif // ENABLE(CG_DISPLAY_LIST_BACKED_IMAGE_BUFFER)
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