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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 "RemoteVideoFrameIdentifier.h"
#include "SharedPreferencesForWebProcess.h"
#include "SharedVideoFrame.h"
#include "VideoDecoderIdentifier.h"
#include "VideoEncoderIdentifier.h"
#include "WorkQueueMessageReceiver.h"
#include <WebCore/ProcessIdentity.h>
#include <WebCore/SharedMemory.h>
#include <WebCore/VideoCodecType.h>
#include <WebCore/VideoEncoderScalabilityMode.h>
#include <WebCore/WebRTCVideoDecoder.h>
#include <atomic>
#include <wtf/TZoneMalloc.h>
#include <wtf/ThreadAssertions.h>
namespace IPC {
class Connection;
class Decoder;
class Semaphore;
}
namespace webrtc {
using LocalEncoder = void*;
}
namespace WebCore {
class FrameRateMonitor;
class PixelBufferConformerCV;
}
namespace WebKit {
class GPUConnectionToWebProcess;
class RemoteVideoFrameObjectHeap;
struct SharedVideoFrame;
class SharedVideoFrameReader;
class LibWebRTCCodecsProxy final : public IPC::WorkQueueMessageReceiver<WTF::DestructionThread::Any> {
WTF_MAKE_TZONE_ALLOCATED(LibWebRTCCodecsProxy);
public:
static Ref<LibWebRTCCodecsProxy> create(GPUConnectionToWebProcess&, SharedPreferencesForWebProcess&);
~LibWebRTCCodecsProxy();
void ref() const final { IPC::WorkQueueMessageReceiver<WTF::DestructionThread::Any>::ref(); }
void deref() const final { IPC::WorkQueueMessageReceiver<WTF::DestructionThread::Any>::deref(); }
void stopListeningForIPC(Ref<LibWebRTCCodecsProxy>&& refFromConnection);
bool allowsExitUnderMemoryPressure() const;
std::optional<SharedPreferencesForWebProcess> sharedPreferencesForWebProcess() const { return m_sharedPreferencesForWebProcess; }
void updateSharedPreferencesForWebProcess(SharedPreferencesForWebProcess);
private:
explicit LibWebRTCCodecsProxy(GPUConnectionToWebProcess&, SharedPreferencesForWebProcess&);
void initialize();
auto createDecoderCallback(VideoDecoderIdentifier, bool useRemoteFrames, bool enableAdditionalLogging);
std::unique_ptr<WebCore::WebRTCVideoDecoder> createLocalDecoder(VideoDecoderIdentifier, WebCore::VideoCodecType, bool useRemoteFrames, bool enableAdditionalLogging);
WorkQueue& workQueue() const { return m_queue; }
Ref<WorkQueue> protectedWorkQueue() const { return m_queue; }
Ref<IPC::Connection> protectedConnection() const { return m_connection; }
// IPC::WorkQueueMessageReceiver overrides.
void didReceiveMessage(IPC::Connection&, IPC::Decoder&) final;
void createDecoder(VideoDecoderIdentifier, WebCore::VideoCodecType, const String& codecString, bool useRemoteFrames, bool enableAdditionalLogging, CompletionHandler<void(bool)>&&);
void releaseDecoder(VideoDecoderIdentifier);
void flushDecoder(VideoDecoderIdentifier, CompletionHandler<void()>&&);
void setDecoderFormatDescription(VideoDecoderIdentifier, std::span<const uint8_t>, uint16_t width, uint16_t height);
void decodeFrame(VideoDecoderIdentifier, int64_t timeStamp, std::span<const uint8_t>, CompletionHandler<void(bool)>&&);
void setFrameSize(VideoDecoderIdentifier, uint16_t width, uint16_t height);
void createEncoder(VideoEncoderIdentifier, WebCore::VideoCodecType, const String& codecString, const Vector<std::pair<String, String>>&, bool useLowLatency, bool useAnnexB, WebCore::VideoEncoderScalabilityMode, CompletionHandler<void(bool)>&&);
void releaseEncoder(VideoEncoderIdentifier);
void initializeEncoder(VideoEncoderIdentifier, uint16_t width, uint16_t height, unsigned startBitrate, unsigned maxBitrate, unsigned minBitrate, uint32_t maxFramerate);
void encodeFrame(VideoEncoderIdentifier, SharedVideoFrame&&, int64_t timeStamp, std::optional<uint64_t> duration, bool shouldEncodeAsKeyFrame, CompletionHandler<void(bool)>&&);
void flushEncoder(VideoEncoderIdentifier, CompletionHandler<void()>&&);
void setEncodeRates(VideoEncoderIdentifier, uint32_t bitRate, uint32_t frameRate, CompletionHandler<void()>&&);
void setSharedVideoFrameSemaphore(VideoEncoderIdentifier, IPC::Semaphore&&);
void setSharedVideoFrameMemory(VideoEncoderIdentifier, WebCore::SharedMemory::Handle&&);
void setRTCLoggingLevel(WTFLogLevel);
void notifyEncoderResult(VideoEncoderIdentifier, bool);
void notifyDecoderResult(VideoDecoderIdentifier, bool);
struct Decoder {
std::unique_ptr<WebCore::WebRTCVideoDecoder> webrtcDecoder;
std::unique_ptr<WebCore::FrameRateMonitor> frameRateMonitor;
Deque<CompletionHandler<void(bool)>> decodingCallbacks;
};
void doDecoderTask(VideoDecoderIdentifier, NOESCAPE Function<void(Decoder&)>&&);
struct Encoder {
webrtc::LocalEncoder webrtcEncoder { nullptr };
std::unique_ptr<SharedVideoFrameReader> frameReader;
Deque<CompletionHandler<void(bool)>> encodingCallbacks;
};
Encoder* findEncoder(VideoEncoderIdentifier) WTF_REQUIRES_CAPABILITY(workQueue());
Ref<IPC::Connection> m_connection;
Ref<WorkQueue> m_queue;
Ref<RemoteVideoFrameObjectHeap> m_videoFrameObjectHeap;
WebCore::ProcessIdentity m_resourceOwner;
SharedPreferencesForWebProcess m_sharedPreferencesForWebProcess;
HashMap<VideoDecoderIdentifier, Decoder> m_decoders WTF_GUARDED_BY_CAPABILITY(workQueue());
HashMap<VideoEncoderIdentifier, 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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