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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 "GPUProcessConnection.h"
#include "IPCSemaphore.h"
#include "MessageReceiver.h"
#include "RTCDecoderIdentifier.h"
#include "RTCEncoderIdentifier.h"
#include "RemoteVideoFrameIdentifier.h"
#include "RemoteVideoFrameProxy.h"
#include "SharedVideoFrame.h"
#include <map>
#include <webrtc/api/video/video_codec_type.h>
#include <wtf/HashMap.h>
#include <wtf/HashSet.h>
#include <wtf/Lock.h>
using CVPixelBufferPoolRef = struct __CVPixelBufferPool*;
namespace IPC {
class Connection;
class Decoder;
}
namespace webrtc {
class VideoFrame;
struct WebKitEncodedFrameInfo;
}
namespace WebKit {
class RemoteVideoFrameObjectHeapProxy;
class LibWebRTCCodecs : public IPC::Connection::WorkQueueMessageReceiver, public GPUProcessConnection::Client {
WTF_MAKE_FAST_ALLOCATED;
public:
static Ref<LibWebRTCCodecs> create();
~LibWebRTCCodecs();
static void setCallbacks(bool useGPUProcess, bool useRemoteFrames);
enum class Type { H264, H265, VP9 };
struct Decoder {
WTF_MAKE_FAST_ALLOCATED;
public:
RTCDecoderIdentifier identifier;
Type type;
void* decodedImageCallback WTF_GUARDED_BY_LOCK(decodedImageCallbackLock) { nullptr };
Lock decodedImageCallbackLock;
bool hasError { false };
RefPtr<IPC::Connection> connection;
};
Decoder* createDecoder(Type);
int32_t releaseDecoder(Decoder&);
int32_t decodeFrame(Decoder&, uint32_t timeStamp, const uint8_t*, size_t, uint16_t width, uint16_t height);
void registerDecodeFrameCallback(Decoder&, void* decodedImageCallback);
struct EncoderInitializationData {
uint16_t width;
uint16_t height;
unsigned startBitRate;
unsigned maxBitRate;
unsigned minBitRate;
uint32_t maxFrameRate;
};
struct Encoder {
WTF_MAKE_FAST_ALLOCATED;
public:
RTCEncoderIdentifier identifier;
webrtc::VideoCodecType codecType { webrtc::kVideoCodecGeneric };
Vector<std::pair<String, String>> parameters;
std::optional<EncoderInitializationData> initializationData;
void* encodedImageCallback WTF_GUARDED_BY_LOCK(encodedImageCallbackLock) { nullptr };
Lock encodedImageCallbackLock;
RefPtr<IPC::Connection> connection;
SharedVideoFrameWriter sharedVideoFrameWriter;
bool hasSentInitialEncodeRates { false };
};
Encoder* createEncoder(Type, const std::map<std::string, std::string>&);
int32_t releaseEncoder(Encoder&);
int32_t initializeEncoder(Encoder&, uint16_t width, uint16_t height, unsigned startBitrate, unsigned maxBitrate, unsigned minBitrate, uint32_t maxFramerate);
int32_t encodeFrame(Encoder&, const webrtc::VideoFrame&, bool shouldEncodeAsKeyFrame);
void registerEncodeFrameCallback(Encoder&, void* encodedImageCallback);
void setEncodeRates(Encoder&, uint32_t bitRate, uint32_t frameRate);
CVPixelBufferPoolRef pixelBufferPool(size_t width, size_t height, OSType);
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
void setVP9VTBSupport(bool supportVP9VTB) { m_supportVP9VTB = supportVP9VTB; }
bool supportVP9VTB() const { return m_supportVP9VTB; }
void setLoggingLevel(WTFLogLevel);
private:
LibWebRTCCodecs();
void ensureGPUProcessConnectionAndDispatchToThread(Function<void()>&&);
void ensureGPUProcessConnectionOnMainThreadWithLock() WTF_REQUIRES_LOCK(m_connectionLock);
void gpuProcessConnectionMayNoLongerBeNeeded();
void failedDecoding(RTCDecoderIdentifier);
void completedDecoding(RTCDecoderIdentifier, uint32_t timeStamp, uint32_t timeStampNs, RemoteVideoFrameProxy::Properties&&);
// FIXME: Will be removed once RemoteVideoFrameProxy providers are the only ones sending data.
void completedDecodingCV(RTCDecoderIdentifier, uint32_t timeStamp, uint32_t timeStampNs, RetainPtr<CVPixelBufferRef>&&);
void completedEncoding(RTCEncoderIdentifier, IPC::DataReference&&, const webrtc::WebKitEncodedFrameInfo&);
RetainPtr<CVPixelBufferRef> convertToBGRA(CVPixelBufferRef);
// GPUProcessConnection::Client
void gpuProcessConnectionDidClose(GPUProcessConnection&);
IPC::Connection* encoderConnection(Encoder&) WTF_REQUIRES_LOCK(m_encodersConnectionLock);
void setEncoderConnection(Encoder&, RefPtr<IPC::Connection>&&) WTF_REQUIRES_LOCK(m_encodersConnectionLock);
IPC::Connection* decoderConnection(Decoder&) WTF_REQUIRES_LOCK(m_connectionLock);
void setDecoderConnection(Decoder&, RefPtr<IPC::Connection>&&) WTF_REQUIRES_LOCK(m_connectionLock);
template<typename Buffer> bool copySharedVideoFrame(LibWebRTCCodecs::Encoder&, IPC::Connection&, Buffer&&);
WorkQueue& workQueue() const { return m_queue; }
private:
HashMap<RTCDecoderIdentifier, std::unique_ptr<Decoder>> m_decoders WTF_GUARDED_BY_CAPABILITY(workQueue());
Lock m_encodersConnectionLock;
HashMap<RTCEncoderIdentifier, std::unique_ptr<Encoder>> m_encoders WTF_GUARDED_BY_CAPABILITY(workQueue());
std::atomic<bool> m_needsGPUProcessConnection;
Lock m_connectionLock;
RefPtr<IPC::Connection> m_connection WTF_GUARDED_BY_LOCK(m_connectionLock);
RefPtr<RemoteVideoFrameObjectHeapProxy> m_videoFrameObjectHeapProxy WTF_GUARDED_BY_LOCK(m_connectionLock);
Vector<Function<void()>> m_tasksToDispatchAfterEstablishingConnection;
Ref<WorkQueue> m_queue;
RetainPtr<CVPixelBufferPoolRef> m_pixelBufferPool;
size_t m_pixelBufferPoolWidth { 0 };
size_t m_pixelBufferPoolHeight { 0 };
bool m_supportVP9VTB { false };
std::optional<WTFLogLevel> m_loggingLevel;
bool m_useRemoteFrames { false };
};
} // namespace WebKit
#endif
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