ZLMediaKit/webrtc/WebRtcPusher.h
夏楚 5464313b41
修复webrtc推流互斥锁重入死锁bug (#2713)
simulcast推流时,在onRecvRtp函数中可能触发对totalReaderCount的调用,从而导致死锁。
2023-07-29 13:04:24 +08:00

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/*
* Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
*
* This file is part of ZLMediaKit(https://github.com/xia-chu/ZLMediaKit).
*
* Use of this source code is governed by MIT license that can be found in the
* LICENSE file in the root of the source tree. All contributing project authors
* may be found in the AUTHORS file in the root of the source tree.
*/
#ifndef ZLMEDIAKIT_WEBRTCPUSHER_H
#define ZLMEDIAKIT_WEBRTCPUSHER_H
#include "WebRtcTransport.h"
#include "Rtsp/RtspMediaSource.h"
namespace mediakit {
class WebRtcPusher : public WebRtcTransportImp, public MediaSourceEvent {
public:
using Ptr = std::shared_ptr<WebRtcPusher>;
~WebRtcPusher() override = default;
static Ptr create(const EventPoller::Ptr &poller, const RtspMediaSource::Ptr &src,
const std::shared_ptr<void> &ownership, const MediaInfo &info, const ProtocolOption &option, bool preferred_tcp = false);
protected:
///////WebRtcTransportImp override///////
void onStartWebRTC() override;
void onDestory() override;
void onRtcConfigure(RtcConfigure &configure) const override;
void onRecvRtp(MediaTrack &track, const std::string &rid, RtpPacket::Ptr rtp) override;
void onShutdown(const SockException &ex) override;
void onRtcpBye() override;
//// dtls相关的回调 ////
void OnDtlsTransportClosed(const RTC::DtlsTransport *dtlsTransport) override;
protected:
///////MediaSourceEvent override///////
// 关闭
bool close(MediaSource &sender) override;
// 播放总人数
int totalReaderCount(MediaSource &sender) override;
// 获取媒体源类型
MediaOriginType getOriginType(MediaSource &sender) const override;
// 获取媒体源url或者文件路径
std::string getOriginUrl(MediaSource &sender) const override;
// 获取媒体源客户端相关信息
std::shared_ptr<SockInfo> getOriginSock(MediaSource &sender) const override;
// 由于支持断连续推存在OwnerPoller变更的可能
toolkit::EventPoller::Ptr getOwnerPoller(MediaSource &sender) override;
// 获取丢包率
float getLossRate(MediaSource &sender,TrackType type) override;
private:
WebRtcPusher(const EventPoller::Ptr &poller, const RtspMediaSource::Ptr &src,
const std::shared_ptr<void> &ownership, const MediaInfo &info, const ProtocolOption &option, bool preferred_tcp);
private:
bool _simulcast = false;
//断连续推延时
uint32_t _continue_push_ms = 0;
//媒体相关元数据
MediaInfo _media_info;
//推流的rtsp源
RtspMediaSource::Ptr _push_src;
//推流所有权
std::shared_ptr<void> _push_src_ownership;
//推流的rtsp源,支持simulcast
std::recursive_mutex _mtx;
std::unordered_map<std::string/*rid*/, RtspMediaSource::Ptr> _push_src_sim;
std::unordered_map<std::string/*rid*/, std::shared_ptr<void> > _push_src_sim_ownership;
};
}// namespace mediakit
#endif //ZLMEDIAKIT_WEBRTCPUSHER_H