Source/WebKit/GPUProcess/graphics/RemoteImageBufferMessageHandlerProxy.h

/*
 * Copyright (C) 2020 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
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 */

#pragma once

#if ENABLE(GPU_PROCESS)

#include "ImageBufferBackendHandle.h"
#include "ImageBufferFlushIdentifier.h"
#include "ImageBufferIdentifier.h"
#include <WebCore/ColorSpace.h>
#include <WebCore/DisplayList.h>
#include <WebCore/FloatSize.h>

namespace WebCore {
enum class AlphaPremultiplication : uint8_t;
class ImageData;
}

namespace WebKit {

class RemoteRenderingBackendProxy;

class RemoteImageBufferMessageHandlerProxy {
public:
    virtual ~RemoteImageBufferMessageHandlerProxy() = default;

    // Messages to be received. See RemoteRenderingBackendProxy.messages.in.
    virtual void flushDrawingContext(const WebCore::DisplayList::DisplayList&) = 0;
    virtual void flushDrawingContextAndCommit(const WebCore::DisplayList::DisplayList&, ImageBufferFlushIdentifier) = 0;
    virtual RefPtr<WebCore::ImageData> getImageData(WebCore::AlphaPremultiplication outputFormat, const WebCore::IntRect& srcRect) const = 0;

protected:
    RemoteImageBufferMessageHandlerProxy(RemoteRenderingBackendProxy&, ImageBufferIdentifier);

    // Messages to be sent. See RemoteRenderingBackend.messages.in.
    void createBackend(const WebCore::FloatSize& logicalSize, const WebCore::IntSize& backendSize, float resolutionScale, WebCore::ColorSpace, ImageBufferBackendHandle);
    void commitFlushContext(ImageBufferFlushIdentifier);

private:
    RemoteRenderingBackendProxy& m_remoteRenderingBackendProxy;
    ImageBufferIdentifier m_imageBufferIdentifier;
};

} // namespace WebKit

#endif // ENABLE(GPU_PROCESS)