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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 "Logging.h"
#include "RemoteVideoFrameObjectHeapMessages.h"
#include "RemoteVideoFrameObjectHeapProxyProcessorMessages.h"
#include "RemoteVideoFrameProxy.h"
#include <wtf/MainThread.h>
#include <wtf/Scope.h>
#include <wtf/WorkQueue.h>
#if PLATFORM(COCOA)
#include <WebCore/ColorSpaceCG.h>
#include <WebCore/PixelBufferConformerCV.h>
#include <WebCore/VideoFrameCV.h>
#include <pal/cf/CoreMediaSoftLink.h>
#include <WebCore/CoreVideoSoftLink.h>
#endif
namespace WebKit {
using namespace WebCore;
static WorkQueue& remoteVideoFrameObjectHeapQueueSingleton()
{
static NeverDestroyed queue = WorkQueue::create("org.webkit.RemoteVideoFrameObjectHeap"_s, WorkQueue::QOS::UserInteractive);
return queue.get();
}
Ref<RemoteVideoFrameObjectHeap> RemoteVideoFrameObjectHeap::create(Ref<IPC::Connection>&& connection)
{
Ref heap = adoptRef(*new RemoteVideoFrameObjectHeap(WTFMove(connection)));
heap->protectedConnection()->addWorkQueueMessageReceiver(Messages::RemoteVideoFrameObjectHeap::messageReceiverName(), remoteVideoFrameObjectHeapQueueSingleton(), heap);
return heap;
}
RemoteVideoFrameObjectHeap::RemoteVideoFrameObjectHeap(Ref<IPC::Connection>&& connection)
: m_connection(WTFMove(connection))
{
}
RemoteVideoFrameObjectHeap::~RemoteVideoFrameObjectHeap()
{
ASSERT(m_isClosed);
}
void RemoteVideoFrameObjectHeap::close()
{
assertIsMainThread();
if (m_isClosed)
return;
m_isClosed = true;
protectedConnection()->removeWorkQueueMessageReceiver(Messages::RemoteVideoFrameObjectHeap::messageReceiverName());
#if PLATFORM(COCOA)
m_sharedVideoFrameWriter.disable();
#endif
// 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.
m_heap.clear();
// TODO: add can happen after stopping.
}
RemoteVideoFrameProxy::Properties RemoteVideoFrameObjectHeap::add(Ref<WebCore::VideoFrame>&& frame)
{
auto newFrameReference = RemoteVideoFrameReference::generateForAdd();
auto properties = RemoteVideoFrameProxy::properties(newFrameReference, frame);
auto success = m_heap.add(newFrameReference, WTFMove(frame));
ASSERT_UNUSED(success, success);
return properties;
}
void RemoteVideoFrameObjectHeap::releaseVideoFrame(RemoteVideoFrameWriteReference&& write)
{
assertIsCurrent(remoteVideoFrameObjectHeapQueueSingleton());
m_heap.remove(WTFMove(write));
}
#if PLATFORM(COCOA)
void RemoteVideoFrameObjectHeap::getVideoFrameBuffer(RemoteVideoFrameReadReference&& read, bool canSendIOSurface)
{
assertIsCurrent(remoteVideoFrameObjectHeapQueueSingleton());
auto identifier = read.identifier();
auto videoFrame = get(WTFMove(read));
std::optional<SharedVideoFrame::Buffer> buffer;
Ref connection = m_connection;
if (videoFrame) {
buffer = m_sharedVideoFrameWriter.writeBuffer(videoFrame->pixelBuffer(),
[&](auto& semaphore) { connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameSemaphore { semaphore }, 0); },
[&](SharedMemory::Handle&& handle) { connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameMemory { WTFMove(handle) }, 0); },
canSendIOSurface);
// FIXME: We should ASSERT(result) once we support enough pixel buffer types.
}
connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::NewVideoFrameBuffer { identifier, WTFMove(buffer) }, 0);
}
void RemoteVideoFrameObjectHeap::pixelBuffer(RemoteVideoFrameReadReference&& read, CompletionHandler<void(RetainPtr<CVPixelBufferRef>)>&& completionHandler)
{
assertIsCurrent(remoteVideoFrameObjectHeapQueueSingleton());
auto videoFrame = get(WTFMove(read));
if (!videoFrame) {
ASSERT_IS_TESTING_IPC();
completionHandler(nullptr);
return;
}
auto pixelBuffer = videoFrame->pixelBuffer();
ASSERT(pixelBuffer);
completionHandler(WTFMove(pixelBuffer));
}
void RemoteVideoFrameObjectHeap::convertFrameBuffer(SharedVideoFrame&& sharedVideoFrame, CompletionHandler<void(WebCore::DestinationColorSpace)>&& callback)
{
DestinationColorSpace destinationColorSpace { DestinationColorSpace::SRGB().platformColorSpace() };
auto scope = makeScopeExit([&callback, &destinationColorSpace] { callback(destinationColorSpace); });
RefPtr<VideoFrame> frame;
Ref connection = m_connection;
if (std::holds_alternative<RemoteVideoFrameReadReference>(sharedVideoFrame.buffer))
frame = get(WTFMove(std::get<RemoteVideoFrameReadReference>(sharedVideoFrame.buffer)));
else
frame = m_sharedVideoFrameReader.read(WTFMove(sharedVideoFrame));
if (!frame) {
connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::NewConvertedVideoFrameBuffer { { } }, 0);
return;
}
RetainPtr<CVPixelBufferRef> buffer = frame->pixelBuffer();
destinationColorSpace = DestinationColorSpace(createCGColorSpaceForCVPixelBuffer(buffer.get()));
if (CVPixelBufferGetPixelFormatType(buffer.get()) != kCVPixelFormatType_32BGRA) {
Locker locker { m_pixelBufferConformerLock };
if (!m_pixelBufferConformer)
m_pixelBufferConformer = createPixelConformer().moveToUniquePtr();
auto convertedBuffer = m_pixelBufferConformer->convert(buffer.get());
if (!convertedBuffer) {
RELEASE_LOG_ERROR(WebRTC, "RemoteVideoFrameObjectHeap::convertFrameBuffer conformer failed");
connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::NewConvertedVideoFrameBuffer { { } }, 0);
return;
}
buffer = WTFMove(convertedBuffer);
}
bool canSendIOSurface = false;
auto result = m_sharedVideoFrameWriter.writeBuffer(buffer.get(),
[&](auto& semaphore) { connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameSemaphore { semaphore }, 0); },
[&](auto&& handle) { connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::SetSharedVideoFrameMemory { WTFMove(handle) }, 0); },
canSendIOSurface);
connection->send(Messages::RemoteVideoFrameObjectHeapProxyProcessor::NewConvertedVideoFrameBuffer { WTFMove(result) }, 0);
}
void RemoteVideoFrameObjectHeap::setSharedVideoFrameSemaphore(IPC::Semaphore&& semaphore)
{
m_sharedVideoFrameReader.setSemaphore(WTFMove(semaphore));
}
void RemoteVideoFrameObjectHeap::setSharedVideoFrameMemory(SharedMemory::Handle&& handle)
{
m_sharedVideoFrameReader.setSharedMemory(WTFMove(handle));
}
#endif
void RemoteVideoFrameObjectHeap::lowMemoryHandler()
{
#if PLATFORM(COCOA)
Locker locker { m_pixelBufferConformerLock };
m_pixelBufferConformer = nullptr;
#endif
}
}
#endif
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