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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
#include "ImageBufferBackendHandleSharing.h"
#include <WebCore/ImageBuffer.h>
#include <WebCore/PlatformImageBufferBackend.h>
#include <wtf/IsoMalloc.h>
namespace WebCore {
class ProcessIdentity;
}
namespace WebKit {
class ShareableBitmap;
class ImageBufferShareableBitmapBackend final : public WebCore::PlatformImageBufferBackend, public ImageBufferBackendHandleSharing {
WTF_MAKE_ISO_ALLOCATED(ImageBufferShareableBitmapBackend);
WTF_MAKE_NONCOPYABLE(ImageBufferShareableBitmapBackend);
public:
static WebCore::IntSize calculateSafeBackendSize(const Parameters&);
static unsigned calculateBytesPerRow(const Parameters&, const WebCore::IntSize& backendSize);
static size_t calculateMemoryCost(const Parameters&);
static std::unique_ptr<ImageBufferShareableBitmapBackend> create(const Parameters&, const WebCore::ImageBufferCreationContext&);
static std::unique_ptr<ImageBufferShareableBitmapBackend> create(const Parameters&, ImageBufferBackendHandle);
ImageBufferShareableBitmapBackend(const Parameters&, Ref<ShareableBitmap>&&, std::unique_ptr<WebCore::GraphicsContext>&&);
WebCore::GraphicsContext& context() final { return *m_context; }
WebCore::IntSize backendSize() const final;
ImageBufferBackendHandle createBackendHandle(SharedMemory::Protection = SharedMemory::Protection::ReadWrite) const final;
RefPtr<ShareableBitmap> bitmap() const final { return m_bitmap.ptr(); }
#if USE(CAIRO)
RefPtr<cairo_surface_t> createCairoSurface() final;
#endif
RefPtr<WebCore::NativeImage> copyNativeImage(WebCore::BackingStoreCopy = WebCore::CopyBackingStore) final;
void getPixelBuffer(const WebCore::IntRect&, WebCore::PixelBuffer&) final;
void putPixelBuffer(const WebCore::PixelBuffer&, const WebCore::IntRect& srcRect, const WebCore::IntPoint& destPoint, WebCore::AlphaPremultiplication destFormat) final;
private:
unsigned bytesPerRow() const final;
String debugDescription() const final;
ImageBufferBackendSharing* toBackendSharing() final { return this; }
void releaseGraphicsContext() final { /* Do nothing. This is only relevant for IOSurface backends */ }
Ref<ShareableBitmap> m_bitmap;
std::unique_ptr<WebCore::GraphicsContext> m_context;
};
} // namespace WebKit
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