/*
 * Copyright (C) 2023 Igalia S.L.
 *
 * 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 COMPUTER, 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 COMPUTER, 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 ENABLE(WPE_PLATFORM)
#include "MessageReceiver.h"
#include <WebCore/IntSize.h>
#include <wtf/HashMap.h>
#include <wtf/glib/GRefPtr.h>
#include <wtf/unix/UnixFileDescriptor.h>

typedef struct _WPEBuffer WPEBuffer;
typedef struct _WPEView WPEView;

namespace WebCore {
class IntRect;
class ShareableBitmapHandle;
}

namespace WTF {
class UnixFileDescriptor;
}

namespace WebKit {

class WebPageProxy;

class AcceleratedBackingStoreDMABuf final : public IPC::MessageReceiver {
    WTF_MAKE_NONCOPYABLE(AcceleratedBackingStoreDMABuf); WTF_MAKE_FAST_ALLOCATED;
public:
    static std::unique_ptr<AcceleratedBackingStoreDMABuf> create(WebPageProxy&, WPEView*);
    ~AcceleratedBackingStoreDMABuf();

    void updateSurfaceID(uint64_t);

private:
    AcceleratedBackingStoreDMABuf(WebPageProxy&, WPEView*);

    // IPC::MessageReceiver.
    void didReceiveMessage(IPC::Connection&, IPC::Decoder&) override;

    void didCreateBuffer(uint64_t id, const WebCore::IntSize&, uint32_t format, Vector<WTF::UnixFileDescriptor>&&, Vector<uint32_t>&& offsets, Vector<uint32_t>&& strides, uint64_t modifier);
    void didCreateBufferSHM(uint64_t id, WebCore::ShareableBitmapHandle&&);
    void didDestroyBuffer(uint64_t id);
    void frame(uint64_t bufferID);
    void frameDone();
    void bufferRendered();

    WebPageProxy& m_webPage;
    GRefPtr<WPEView> m_wpeView;
    uint64_t m_surfaceID { 0 };
    GRefPtr<WPEBuffer> m_pendingBuffer;
    GRefPtr<WPEBuffer> m_committedBuffer;
    HashMap<uint64_t, GRefPtr<WPEBuffer>> m_buffers;
    HashMap<WPEBuffer*, uint64_t> m_bufferIDs;
};

} // namespace WebKit

#endif // ENABLE(WPE_PLATFORM)
