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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.
*/
#include "config.h"
#include "RemoteVideoFrameObjectHeap.h"
#if ENABLE(GPU_PROCESS) && ENABLE(VIDEO)
#include "GPUConnectionToWebProcess.h"
#include "RemoteVideoFrameObjectHeapMessages.h"
#include "RemoteVideoFrameObjectHeapProxyProcessorMessages.h"
#include "RemoteVideoFrameProxy.h"
#if PLATFORM(COCOA)
#include <WebCore/MediaSampleAVFObjC.h>
#include <WebCore/VideoFrameCV.h>
#include <pal/cf/CoreMediaSoftLink.h>
#endif
namespace WebKit {
Ref<RemoteVideoFrameObjectHeap> RemoteVideoFrameObjectHeap::create(GPUConnectionToWebProcess& connectionToWebProcess)
{
return adoptRef(*new RemoteVideoFrameObjectHeap(connectionToWebProcess));
}
RemoteVideoFrameObjectHeap::RemoteVideoFrameObjectHeap(GPUConnectionToWebProcess& connectionToWebProcess)
: m_gpuConnectionToWebProcess(&connectionToWebProcess)
, m_connection(m_gpuConnectionToWebProcess->connection())
{
m_gpuConnectionToWebProcess->messageReceiverMap().addMessageReceiver(Messages::RemoteVideoFrameObjectHeap::messageReceiverName(), *this);
}
RemoteVideoFrameObjectHeap::~RemoteVideoFrameObjectHeap()
{
ASSERT(!m_gpuConnectionToWebProcess);
m_consumeThread.reset();
}
void RemoteVideoFrameObjectHeap::stopListeningForIPC(Ref<RemoteVideoFrameObjectHeap>&& refFromConnection)
{
assertIsCurrent(m_consumeThread);
#if PLATFORM(COCOA)
m_sharedVideoFrameWriter.disable();
#endif
if (auto* gpuConnectionToWebProcess = std::exchange(m_gpuConnectionToWebProcess, nullptr)) {
gpuConnectionToWebProcess->messageReceiverMap().removeMessageReceiver(Messages::RemoteVideoFrameObjectHeap::messageReceiverName());
// Clients might hold on to the ref after this happens. They should also stop themselves, but if they do not,
// avoid big memory leaks by clearing the frames. The clients should fail gracefully (do nothing) in case they fail to look up
// frames.
clear();
// TODO: add can happen after stopping.
}
}
RemoteVideoFrameIdentifier RemoteVideoFrameObjectHeap::createRemoteVideoFrame(Ref<WebCore::MediaSample>&& frame)
{
auto identifier = RemoteVideoFrameIdentifier::generateThreadSafe();
add(identifier, WTFMove(frame));
return identifier;
}
void RemoteVideoFrameObjectHeap::releaseVideoFrame(RemoteVideoFrameWriteReference&& write)
{
assertIsCurrent(m_consumeThread);
retireRemove(WTFMove(write));
}
#if PLATFORM(COCOA)
void RemoteVideoFrameObjectHeap::getVideoFrameBuffer(RemoteVideoFrameReadReference&& read)
{
auto identifier = read.identifier();
auto videoFrame = retire(WTFMove(read), 0_s);
if (!videoFrame)
m_connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::VideoFrameBufferNotFound { identifier }, 0);
RetainPtr<CVPixelBufferRef> pixelBuffer;
if (is<VideoFrameCV>(videoFrame))
pixelBuffer = downcast<VideoFrameCV>(*videoFrame).pixelBuffer();
else if (is<MediaSampleAVFObjC>(*videoFrame))
pixelBuffer = downcast<MediaSampleAVFObjC>(*videoFrame).pixelBuffer();
else {
ASSERT_NOT_REACHED();
return;
}
m_sharedVideoFrameWriter.write(pixelBuffer.get(),
[&](auto& semaphore) { m_connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameSemaphore { semaphore }, 0); },
[&](auto& handle) { m_connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameMemory { handle }, 0); }
);
m_connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::NewVideoFrameBuffer { identifier }, 0);
}
#endif
}
#endif
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