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/*
* Copyright (C) 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
#if ENABLE(GPU_PROCESS) && ENABLE(VIDEO)
#include "RemoteVideoFrameIdentifier.h"
#include "ThreadSafeObjectHeap.h"
#include <WebCore/MediaSample.h>
#include <wtf/ThreadAssertions.h>
#if PLATFORM(COCOA)
#include "SharedVideoFrame.h"
#endif
namespace WebKit {
class GPUConnectionToWebProcess;
// Holds references to all VideoFrame instances that are mapped from Web process to GPU process two processes.
// As currently there is no special state for RemoteVideoFrame, the object heap stores VideoFrame instances (MediaSample).
// As currently there is no RemoteVideoFrame, responsible for dispatching the VideoFrame methods to the objects.
// Consume thread is the thread that uses the VideoFrame. For GPUP this is the media player thread, the main thread.
// FIXME: currently VideoFrame instances are MediaSample instances.
class RemoteVideoFrameObjectHeap final : public ThreadSafeObjectHeap<RemoteVideoFrameIdentifier, RefPtr<WebCore::MediaSample>>, private IPC::MessageReceiver {
public:
static Ref<RemoteVideoFrameObjectHeap> create(GPUConnectionToWebProcess&);
~RemoteVideoFrameObjectHeap();
RemoteVideoFrameIdentifier createRemoteVideoFrame(Ref<WebCore::MediaSample>&&);
void stopListeningForIPC(Ref<RemoteVideoFrameObjectHeap>&& refFromConnection);
private:
RemoteVideoFrameObjectHeap(GPUConnectionToWebProcess&);
// IPC::MessageReceiver overrides.
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
// Messages.
void releaseVideoFrame(RemoteVideoFrameWriteReference&&);
#if PLATFORM(COCOA)
void getVideoFrameBuffer(RemoteVideoFrameReadReference&&);
#endif
GPUConnectionToWebProcess* m_gpuConnectionToWebProcess WTF_GUARDED_BY_LOCK(m_consumeThread);
const Ref<IPC::Connection> m_connection;
ThreadAssertion m_consumeThread NO_UNIQUE_ADDRESS;
#if PLATFORM(COCOA)
SharedVideoFrameWriter m_sharedVideoFrameWriter;
#endif
};
}
#endif
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