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ImageBufferRemoteIOSurfaceBackend.h
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ImageBufferRemoteIOSurfaceBackend.h
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/*
* Copyright (C) 2020-2022 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.
*/
#pragma once
#if HAVE(IOSURFACE)
#include "ImageBufferBackendHandleSharing.h"
#include <WebCore/GraphicsContext.h>
#include <WebCore/ImageBufferBackend.h>
#include <wtf/IsoMalloc.h>
namespace WebKit {
class ImageBufferRemoteIOSurfaceBackend final : public WebCore::ImageBufferBackend, public ImageBufferBackendHandleSharing {
WTF_MAKE_ISO_ALLOCATED(ImageBufferRemoteIOSurfaceBackend);
WTF_MAKE_NONCOPYABLE(ImageBufferRemoteIOSurfaceBackend);
public:
static WebCore::IntSize calculateSafeBackendSize(const Parameters&);
static size_t calculateMemoryCost(const Parameters&);
static size_t calculateExternalMemoryCost(const Parameters&);
static std::unique_ptr<ImageBufferRemoteIOSurfaceBackend> create(const Parameters&, ImageBufferBackendHandle);
ImageBufferRemoteIOSurfaceBackend(const Parameters& parameters, ImageBufferBackendHandle&& handle)
: ImageBufferBackend(parameters)
, m_handle(WTFMove(handle))
{
}
static constexpr bool isOriginAtBottomLeftCorner = true;
static constexpr bool canMapBackingStore = false;
static constexpr WebCore::RenderingMode renderingMode = WebCore::RenderingMode::Accelerated;
WebCore::GraphicsContext& context() const final;
ImageBufferBackendHandle createBackendHandle(SharedMemory::Protection = SharedMemory::Protection::ReadWrite) const final;
private:
WebCore::IntSize backendSize() const final;
RefPtr<WebCore::NativeImage> copyNativeImage(WebCore::BackingStoreCopy) const final;
RefPtr<WebCore::Image> copyImage(WebCore::BackingStoreCopy, WebCore::PreserveResolution) const final;
String toDataURL(const String& mimeType, std::optional<double> quality, WebCore::PreserveResolution) const final;
Vector<uint8_t> toData(const String& mimeType, std::optional<double> quality) const final;
std::optional<WebCore::PixelBuffer> getPixelBuffer(const WebCore::PixelBufferFormat& outputFormat, const WebCore::IntRect&) const final;
void putPixelBuffer(const WebCore::PixelBuffer&, const WebCore::IntRect& srcRect, const WebCore::IntPoint& destPoint, WebCore::AlphaPremultiplication destFormat) final;
bool originAtBottomLeftCorner() const final { return isOriginAtBottomLeftCorner; }
unsigned bytesPerRow() const final;
WebCore::VolatilityState volatilityState() const final { return m_volatilityState; }
void setVolatilityState(WebCore::VolatilityState volatilityState) final { m_volatilityState = volatilityState; }
// ImageBufferBackendSharing
ImageBufferBackendSharing* toBackendSharing() final { return this; }
void setBackendHandle(ImageBufferBackendHandle&&) final;
void clearBackendHandle() final;
bool hasBackendHandle() const final;
ImageBufferBackendHandle m_handle;
WebCore::VolatilityState m_volatilityState { WebCore::VolatilityState::NonVolatile };
};
} // namespace WebKit
#endif // HAVE(IOSURFACE)