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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. 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
#include "ImageBufferBackendHandle.h"
#include <WebCore/ImageBufferBackend.h>
namespace WebKit {
class ImageBufferBackendHandleSharing : public WebCore::ImageBufferBackendSharing {
public:
virtual ImageBufferBackendHandle createBackendHandle(SharedMemory::Protection = SharedMemory::Protection::ReadWrite) const = 0;
virtual ImageBufferBackendHandle takeBackendHandle(SharedMemory::Protection protection = SharedMemory::Protection::ReadWrite) { return createBackendHandle(protection); }
virtual RefPtr<ShareableBitmap> bitmap() const { return nullptr; }
virtual void setBackendHandle(ImageBufferBackendHandle&&) { }
virtual bool hasBackendHandle() const { return false; }
virtual void clearBackendHandle() { }
private:
bool isImageBufferBackendHandleSharing() const final { return true; }
};
} // namespace WebKit
#define SPECIALIZE_TYPE_TRAITS_IMAGE_BUFFER_BACKEND_SHARING(ToValueTypeName, predicate) \
SPECIALIZE_TYPE_TRAITS_BEGIN(ToValueTypeName) \
static bool isType(const WebCore::ImageBufferBackendSharing& backendSharing) { return backendSharing.predicate; } \
SPECIALIZE_TYPE_TRAITS_END()
SPECIALIZE_TYPE_TRAITS_IMAGE_BUFFER_BACKEND_SHARING(WebKit::ImageBufferBackendHandleSharing, isImageBufferBackendHandleSharing())
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