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/*
* 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. 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 USE(LIBWEBRTC) && PLATFORM(COCOA) && ENABLE(GPU_PROCESS)
#include "Connection.h"
#include "DataReference.h"
#include "RTCDecoderIdentifier.h"
#include "RTCEncoderIdentifier.h"
#include "RemoteVideoFrameIdentifier.h"
#include "SharedMemory.h"
#include "SharedVideoFrame.h"
#include <WebCore/ProcessIdentity.h>
#include <atomic>
#include <wtf/ThreadAssertions.h>
namespace IPC {
class Connection;
class Decoder;
class Semaphore;
}
namespace webrtc {
using LocalDecoder = void*;
using LocalEncoder = void*;
}
namespace WebCore {
class PixelBufferConformerCV;
}
namespace WebKit {
class GPUConnectionToWebProcess;
class RemoteVideoFrameObjectHeap;
struct SharedVideoFrame;
class SharedVideoFrameReader;
class LibWebRTCCodecsProxy final : public IPC::Connection::WorkQueueMessageReceiver {
WTF_MAKE_FAST_ALLOCATED;
public:
static Ref<LibWebRTCCodecsProxy> create(GPUConnectionToWebProcess&);
~LibWebRTCCodecsProxy();
void stopListeningForIPC(Ref<LibWebRTCCodecsProxy>&& refFromConnection);
bool allowsExitUnderMemoryPressure() const;
private:
explicit LibWebRTCCodecsProxy(GPUConnectionToWebProcess&);
void initialize();
auto createDecoderCallback(RTCDecoderIdentifier, bool useRemoteFrames);
WorkQueue& workQueue() const { return m_queue; }
// IPC::Connection::WorkQueueMessageReceiver overrides.
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
void createH264Decoder(RTCDecoderIdentifier, bool useRemoteFrames);
void createH265Decoder(RTCDecoderIdentifier, bool useRemoteFrames);
void createVP9Decoder(RTCDecoderIdentifier, bool useRemoteFrames);
void releaseDecoder(RTCDecoderIdentifier);
void decodeFrame(RTCDecoderIdentifier, uint32_t timeStamp, const IPC::DataReference&);
void setFrameSize(RTCDecoderIdentifier, uint16_t width, uint16_t height);
void createEncoder(RTCEncoderIdentifier, const String&, const Vector<std::pair<String, String>>&, bool useLowLatency);
void releaseEncoder(RTCEncoderIdentifier);
void initializeEncoder(RTCEncoderIdentifier, uint16_t width, uint16_t height, unsigned startBitrate, unsigned maxBitrate, unsigned minBitrate, uint32_t maxFramerate);
void encodeFrame(RTCEncoderIdentifier, SharedVideoFrame&&, uint32_t timeStamp, bool shouldEncodeAsKeyFrame);
void setEncodeRates(RTCEncoderIdentifier, uint32_t bitRate, uint32_t frameRate);
void setSharedVideoFrameSemaphore(RTCEncoderIdentifier, IPC::Semaphore&&);
void setSharedVideoFrameMemory(RTCEncoderIdentifier, const SharedMemory::Handle&);
void setRTCLoggingLevel(WTFLogLevel);
struct Encoder {
webrtc::LocalEncoder webrtcEncoder { nullptr };
std::unique_ptr<SharedVideoFrameReader> frameReader;
};
Encoder* findEncoder(RTCEncoderIdentifier) WTF_REQUIRES_CAPABILITY(workQueue());
Ref<IPC::Connection> m_connection;
Ref<WorkQueue> m_queue;
Ref<RemoteVideoFrameObjectHeap> m_videoFrameObjectHeap;
WebCore::ProcessIdentity m_resourceOwner;
HashMap<RTCDecoderIdentifier, webrtc::LocalDecoder> m_decoders WTF_GUARDED_BY_CAPABILITY(workQueue());
HashMap<RTCEncoderIdentifier, Encoder> m_encoders WTF_GUARDED_BY_CAPABILITY(workQueue());
std::atomic<bool> m_hasEncodersOrDecoders { false };
std::unique_ptr<WebCore::PixelBufferConformerCV> m_pixelBufferConformer;
};
}
#endif
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