mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-11-25 04:08:57 +08:00
671 lines
22 KiB
C++
671 lines
22 KiB
C++
/*
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* Copyright (c) 2016-present The ZLMediaKit project authors. All Rights Reserved.
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*
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* This file is part of ZLMediaKit(https://github.com/ZLMediaKit/ZLMediaKit).
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*
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* Use of this source code is governed by MIT-like license that can be found in the
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* LICENSE file in the root of the source tree. All contributing project authors
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* may be found in the AUTHORS file in the root of the source tree.
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*/
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#include <math.h>
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#include "Common/config.h"
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#include "MultiMediaSourceMuxer.h"
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using namespace std;
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using namespace toolkit;
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namespace toolkit {
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StatisticImp(mediakit::MultiMediaSourceMuxer);
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}
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namespace mediakit {
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namespace {
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class MediaSourceForMuxer : public MediaSource {
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public:
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MediaSourceForMuxer(const MultiMediaSourceMuxer::Ptr &muxer)
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: MediaSource("muxer", muxer->getMediaTuple()) {
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MediaSource::setListener(muxer);
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}
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int readerCount() override { return 0; }
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};
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} // namespace
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class FramePacedSender : public FrameWriterInterface, public std::enable_shared_from_this<FramePacedSender> {
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public:
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using OnFrame = std::function<void(const Frame::Ptr &frame)>;
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// 最小缓存100ms数据
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static constexpr auto kMinCacheMS = 100;
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FramePacedSender(uint32_t paced_sender_ms, OnFrame cb) {
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_paced_sender_ms = paced_sender_ms;
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_cb = std::move(cb);
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}
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void resetTimer(const EventPoller::Ptr &poller) {
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std::weak_ptr<FramePacedSender> weak_self = shared_from_this();
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_timer = std::make_shared<Timer>(_paced_sender_ms / 1000.0f, [weak_self]() {
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if (auto strong_self = weak_self.lock()) {
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strong_self->onTick();
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return true;
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}
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return false;
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}, poller);
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}
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bool inputFrame(const Frame::Ptr &frame) override {
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if (!_timer) {
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setCurrentStamp(frame->dts());
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resetTimer(EventPoller::getCurrentPoller());
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}
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_cache.emplace_back(frame->dts() + _cache_ms, Frame::getCacheAbleFrame(frame));
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return true;
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}
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private:
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void onTick() {
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auto dst = _cache.empty() ? 0 : _cache.back().first;
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while (!_cache.empty()) {
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auto &front = _cache.front();
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if (getCurrentStamp() < front.first) {
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// 还没到消费时间
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break;
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}
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// 时间到了，该消费frame了
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_cb(front.second);
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_cache.pop_front();
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}
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if (_cache.empty() && dst) {
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// 消费太快，需要增加缓存大小
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setCurrentStamp(dst);
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_cache_ms += kMinCacheMS;
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}
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// 消费太慢，需要强制flush数据
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if (_cache.size() > 25 * 5) {
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WarnL << "Flush frame paced sender cache: " << _cache.size();
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while (!_cache.empty()) {
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auto &front = _cache.front();
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_cb(front.second);
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_cache.pop_front();
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}
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setCurrentStamp(dst);
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}
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}
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uint64_t getCurrentStamp() { return _ticker.elapsedTime() + _stamp_offset; }
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void setCurrentStamp(uint64_t stamp) {
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_stamp_offset = stamp;
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_ticker.resetTime();
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}
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private:
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uint32_t _paced_sender_ms;
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uint32_t _cache_ms = kMinCacheMS;
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uint64_t _stamp_offset = 0;
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OnFrame _cb;
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Ticker _ticker;
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Timer::Ptr _timer;
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std::list<std::pair<uint64_t, Frame::Ptr>> _cache;
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};
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static std::shared_ptr<MediaSinkInterface> makeRecorder(MediaSource &sender, const vector<Track::Ptr> &tracks, Recorder::type type, const ProtocolOption &option){
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auto recorder = Recorder::createRecorder(type, sender.getMediaTuple(), option);
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for (auto &track : tracks) {
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recorder->addTrack(track);
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}
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recorder->addTrackCompleted();
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return recorder;
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}
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static string getTrackInfoStr(const TrackSource *track_src){
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_StrPrinter codec_info;
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auto tracks = track_src->getTracks(true);
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for (auto &track : tracks) {
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track->update();
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auto codec_type = track->getTrackType();
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codec_info << track->getCodecName();
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switch (codec_type) {
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case TrackAudio : {
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auto audio_track = dynamic_pointer_cast<AudioTrack>(track);
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codec_info << "["
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<< audio_track->getAudioSampleRate() << "/"
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<< audio_track->getAudioChannel() << "/"
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<< audio_track->getAudioSampleBit() << "] ";
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break;
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}
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case TrackVideo : {
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auto video_track = dynamic_pointer_cast<VideoTrack>(track);
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codec_info << "["
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<< video_track->getVideoWidth() << "/"
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<< video_track->getVideoHeight() << "/"
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<< round(video_track->getVideoFps()) << "] ";
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break;
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}
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default:
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break;
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}
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}
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return std::move(codec_info);
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}
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const ProtocolOption &MultiMediaSourceMuxer::getOption() const {
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return _option;
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}
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const MediaTuple &MultiMediaSourceMuxer::getMediaTuple() const {
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return _tuple;
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}
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std::string MultiMediaSourceMuxer::shortUrl() const {
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auto ret = getOriginUrl(MediaSource::NullMediaSource());
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if (!ret.empty()) {
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return ret;
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}
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return _tuple.shortUrl();
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}
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MultiMediaSourceMuxer::MultiMediaSourceMuxer(const MediaTuple& tuple, float dur_sec, const ProtocolOption &option): _tuple(tuple) {
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if (!option.stream_replace.empty()) {
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// 支持在on_publish hook中替换stream_id
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_tuple.stream = option.stream_replace;
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}
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_poller = EventPollerPool::Instance().getPoller();
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_create_in_poller = _poller->isCurrentThread();
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_option = option;
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_dur_sec = dur_sec;
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setMaxTrackCount(option.max_track);
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if (option.enable_rtmp) {
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_rtmp = std::make_shared<RtmpMediaSourceMuxer>(_tuple, option, std::make_shared<TitleMeta>(dur_sec));
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}
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if (option.enable_rtsp) {
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_rtsp = std::make_shared<RtspMediaSourceMuxer>(_tuple, option, std::make_shared<TitleSdp>(dur_sec));
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}
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if (option.enable_hls) {
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_hls = dynamic_pointer_cast<HlsRecorder>(Recorder::createRecorder(Recorder::type_hls, _tuple, option));
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}
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if (option.enable_hls_fmp4) {
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_hls_fmp4 = dynamic_pointer_cast<HlsFMP4Recorder>(Recorder::createRecorder(Recorder::type_hls_fmp4, _tuple, option));
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}
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if (option.enable_mp4) {
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_mp4 = Recorder::createRecorder(Recorder::type_mp4, _tuple, option);
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}
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if (option.enable_ts) {
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_ts = dynamic_pointer_cast<TSMediaSourceMuxer>(Recorder::createRecorder(Recorder::type_ts, _tuple, option));
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}
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if (option.enable_fmp4) {
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_fmp4 = dynamic_pointer_cast<FMP4MediaSourceMuxer>(Recorder::createRecorder(Recorder::type_fmp4, _tuple, option));
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}
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//音频相关设置
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enableAudio(option.enable_audio);
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enableMuteAudio(option.add_mute_audio);
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}
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void MultiMediaSourceMuxer::setMediaListener(const std::weak_ptr<MediaSourceEvent> &listener) {
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setDelegate(listener);
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auto self = shared_from_this();
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//拦截事件
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if (_rtmp) {
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_rtmp->setListener(self);
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}
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if (_rtsp) {
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_rtsp->setListener(self);
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}
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if (_ts) {
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_ts->setListener(self);
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}
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if (_fmp4) {
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_fmp4->setListener(self);
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}
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if (_hls_fmp4) {
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_hls_fmp4->setListener(self);
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}
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if (_hls) {
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_hls->setListener(self);
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}
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}
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void MultiMediaSourceMuxer::setTrackListener(const std::weak_ptr<Listener> &listener) {
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_track_listener = listener;
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}
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int MultiMediaSourceMuxer::totalReaderCount() const {
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return (_rtsp ? _rtsp->readerCount() : 0) +
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(_rtmp ? _rtmp->readerCount() : 0) +
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(_ts ? _ts->readerCount() : 0) +
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(_fmp4 ? _fmp4->readerCount() : 0) +
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(_mp4 ? _option.mp4_as_player : 0) +
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(_hls ? _hls->readerCount() : 0) +
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(_hls_fmp4 ? _hls_fmp4->readerCount() : 0) +
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(_ring ? _ring->readerCount() : 0);
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}
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void MultiMediaSourceMuxer::setTimeStamp(uint32_t stamp) {
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if (_rtmp) {
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_rtmp->setTimeStamp(stamp);
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}
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if (_rtsp) {
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_rtsp->setTimeStamp(stamp);
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}
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}
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int MultiMediaSourceMuxer::totalReaderCount(MediaSource &sender) {
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auto listener = getDelegate();
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if (!listener) {
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return totalReaderCount();
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}
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try {
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return listener->totalReaderCount(sender);
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} catch (MediaSourceEvent::NotImplemented &) {
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//listener未重载totalReaderCount
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return totalReaderCount();
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}
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}
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//此函数可能跨线程调用
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bool MultiMediaSourceMuxer::setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path, size_t max_second) {
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CHECK(getOwnerPoller(MediaSource::NullMediaSource())->isCurrentThread(), "Can only call setupRecord in it's owner poller");
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onceToken token(nullptr, [&]() {
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if (_option.mp4_as_player && type == Recorder::type_mp4) {
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//开启关闭mp4录制，触发观看人数变化相关事件
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onReaderChanged(sender, totalReaderCount());
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}
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});
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switch (type) {
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case Recorder::type_hls : {
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if (start && !_hls) {
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//开始录制
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_option.hls_save_path = custom_path;
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auto hls = dynamic_pointer_cast<HlsRecorder>(makeRecorder(sender, getTracks(), type, _option));
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if (hls) {
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//设置HlsMediaSource的事件监听器
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hls->setListener(shared_from_this());
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}
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_hls = hls;
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} else if (!start && _hls) {
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//停止录制
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_hls = nullptr;
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}
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return true;
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}
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case Recorder::type_mp4 : {
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if (start && !_mp4) {
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//开始录制
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_option.mp4_save_path = custom_path;
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_option.mp4_max_second = max_second;
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_mp4 = makeRecorder(sender, getTracks(), type, _option);
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} else if (!start && _mp4) {
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//停止录制
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_mp4 = nullptr;
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}
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return true;
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}
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case Recorder::type_hls_fmp4: {
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if (start && !_hls_fmp4) {
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//开始录制
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_option.hls_save_path = custom_path;
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auto hls = dynamic_pointer_cast<HlsFMP4Recorder>(makeRecorder(sender, getTracks(), type, _option));
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if (hls) {
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//设置HlsMediaSource的事件监听器
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hls->setListener(shared_from_this());
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}
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_hls_fmp4 = hls;
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} else if (!start && _hls_fmp4) {
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//停止录制
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_hls_fmp4 = nullptr;
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}
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return true;
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}
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case Recorder::type_fmp4: {
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if (start && !_fmp4) {
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auto fmp4 = dynamic_pointer_cast<FMP4MediaSourceMuxer>(makeRecorder(sender, getTracks(), type, _option));
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if (fmp4) {
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fmp4->setListener(shared_from_this());
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}
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_fmp4 = fmp4;
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} else if (!start && _fmp4) {
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_fmp4 = nullptr;
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}
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return true;
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}
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case Recorder::type_ts: {
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if (start && !_ts) {
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auto ts = dynamic_pointer_cast<TSMediaSourceMuxer>(makeRecorder(sender, getTracks(), type, _option));
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if (ts) {
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ts->setListener(shared_from_this());
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}
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_ts = ts;
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} else if (!start && _ts) {
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_ts = nullptr;
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}
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return true;
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}
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default : return false;
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}
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}
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//此函数可能跨线程调用
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bool MultiMediaSourceMuxer::isRecording(MediaSource &sender, Recorder::type type) {
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switch (type) {
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case Recorder::type_hls: return !!_hls;
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case Recorder::type_mp4: return !!_mp4;
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case Recorder::type_hls_fmp4: return !!_hls_fmp4;
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case Recorder::type_fmp4: return !!_fmp4;
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case Recorder::type_ts: return !!_ts;
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default: return false;
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}
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}
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void MultiMediaSourceMuxer::startSendRtp(MediaSource &sender, const MediaSourceEvent::SendRtpArgs &args, const std::function<void(uint16_t, const toolkit::SockException &)> cb) {
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#if defined(ENABLE_RTPPROXY)
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createGopCacheIfNeed();
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auto ring = _ring;
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auto ssrc = args.ssrc;
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auto ssrc_multi_send = args.ssrc_multi_send;
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auto tracks = getTracks(false);
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auto poller = getOwnerPoller(sender);
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auto rtp_sender = std::make_shared<RtpSender>(poller);
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weak_ptr<MultiMediaSourceMuxer> weak_self = shared_from_this();
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rtp_sender->startSend(args, [ssrc,ssrc_multi_send, weak_self, rtp_sender, cb, tracks, ring, poller](uint16_t local_port, const SockException &ex) mutable {
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cb(local_port, ex);
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auto strong_self = weak_self.lock();
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if (!strong_self || ex) {
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return;
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}
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for (auto &track : tracks) {
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rtp_sender->addTrack(track);
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}
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rtp_sender->addTrackCompleted();
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rtp_sender->setOnClose([weak_self, ssrc](const toolkit::SockException &ex) {
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if (auto strong_self = weak_self.lock()) {
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// 可能归属线程发生变更
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strong_self->getOwnerPoller(MediaSource::NullMediaSource())->async([=]() {
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WarnL << "stream:" << strong_self->shortUrl() << " stop send rtp:" << ssrc << ", reason:" << ex;
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strong_self->_rtp_sender.erase(ssrc);
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NOTICE_EMIT(BroadcastSendRtpStoppedArgs, Broadcast::kBroadcastSendRtpStopped, *strong_self, ssrc, ex);
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});
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}
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});
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auto reader = ring->attach(poller);
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reader->setReadCB([rtp_sender](const Frame::Ptr &frame) {
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rtp_sender->inputFrame(frame);
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});
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// 可能归属线程发生变更
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strong_self->getOwnerPoller(MediaSource::NullMediaSource())->async([=]() {
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if(!ssrc_multi_send) {
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strong_self->_rtp_sender.erase(ssrc);
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}
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strong_self->_rtp_sender.emplace(ssrc,reader);
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});
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});
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#else
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cb(0, SockException(Err_other, "该功能未启用，编译时请打开ENABLE_RTPPROXY宏"));
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#endif//ENABLE_RTPPROXY
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}
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bool MultiMediaSourceMuxer::stopSendRtp(MediaSource &sender, const string &ssrc) {
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#if defined(ENABLE_RTPPROXY)
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if (ssrc.empty()) {
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//关闭全部
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auto size = _rtp_sender.size();
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_rtp_sender.clear();
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return size;
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}
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//关闭特定的
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return _rtp_sender.erase(ssrc);
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#else
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return false;
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#endif//ENABLE_RTPPROXY
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}
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vector<Track::Ptr> MultiMediaSourceMuxer::getMediaTracks(MediaSource &sender, bool trackReady) const {
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return getTracks(trackReady);
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}
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EventPoller::Ptr MultiMediaSourceMuxer::getOwnerPoller(MediaSource &sender) {
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auto listener = getDelegate();
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if (!listener) {
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return _poller;
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}
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try {
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auto ret = listener->getOwnerPoller(sender);
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if (ret != _poller) {
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WarnL << "OwnerPoller changed " << _poller->getThreadName() << " -> " << ret->getThreadName() << " : " << shortUrl();
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_poller = ret;
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if (_paced_sender) {
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_paced_sender->resetTimer(_poller);
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}
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}
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return ret;
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} catch (MediaSourceEvent::NotImplemented &) {
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// listener未重载getOwnerPoller
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return _poller;
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}
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}
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std::shared_ptr<MultiMediaSourceMuxer> MultiMediaSourceMuxer::getMuxer(MediaSource &sender) {
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return shared_from_this();
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}
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bool MultiMediaSourceMuxer::onTrackReady(const Track::Ptr &track) {
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auto &stamp = _stamps[track->getIndex()];
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if (_dur_sec > 0.01) {
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// 点播
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stamp.setPlayBack();
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}
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bool ret = false;
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if (_rtmp) {
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ret = _rtmp->addTrack(track) ? true : ret;
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}
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if (_rtsp) {
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ret = _rtsp->addTrack(track) ? true : ret;
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}
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if (_ts) {
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ret = _ts->addTrack(track) ? true : ret;
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}
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if (_fmp4) {
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ret = _fmp4->addTrack(track) ? true : ret;
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}
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if (_hls) {
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ret = _hls->addTrack(track) ? true : ret;
|
||
}
|
||
if (_hls_fmp4) {
|
||
ret = _hls_fmp4->addTrack(track) ? true : ret;
|
||
}
|
||
if (_mp4) {
|
||
ret = _mp4->addTrack(track) ? true : ret;
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
void MultiMediaSourceMuxer::onAllTrackReady() {
|
||
CHECK(!_create_in_poller || getOwnerPoller(MediaSource::NullMediaSource())->isCurrentThread());
|
||
|
||
if (_option.paced_sender_ms) {
|
||
std::weak_ptr<MultiMediaSourceMuxer> weak_self = shared_from_this();
|
||
_paced_sender = std::make_shared<FramePacedSender>(_option.paced_sender_ms, [weak_self](const Frame::Ptr &frame) {
|
||
if (auto strong_self = weak_self.lock()) {
|
||
strong_self->onTrackFrame_l(frame);
|
||
}
|
||
});
|
||
}
|
||
|
||
setMediaListener(getDelegate());
|
||
|
||
if (_rtmp) {
|
||
_rtmp->addTrackCompleted();
|
||
}
|
||
if (_rtsp) {
|
||
_rtsp->addTrackCompleted();
|
||
}
|
||
if (_ts) {
|
||
_ts->addTrackCompleted();
|
||
}
|
||
if (_mp4) {
|
||
_mp4->addTrackCompleted();
|
||
}
|
||
if (_fmp4) {
|
||
_fmp4->addTrackCompleted();
|
||
}
|
||
if (_hls) {
|
||
_hls->addTrackCompleted();
|
||
}
|
||
if (_hls_fmp4) {
|
||
_hls_fmp4->addTrackCompleted();
|
||
}
|
||
|
||
auto listener = _track_listener.lock();
|
||
if (listener) {
|
||
listener->onAllTrackReady();
|
||
}
|
||
|
||
#if defined(ENABLE_RTPPROXY)
|
||
GET_CONFIG(bool, gop_cache, RtpProxy::kGopCache);
|
||
if (gop_cache) {
|
||
createGopCacheIfNeed();
|
||
}
|
||
#endif
|
||
|
||
Stamp *first = nullptr;
|
||
for (auto &pr : _stamps) {
|
||
if (!first) {
|
||
first = &pr.second;
|
||
} else {
|
||
pr.second.syncTo(*first);
|
||
}
|
||
}
|
||
InfoL << "stream: " << shortUrl() << " , codec info: " << getTrackInfoStr(this);
|
||
}
|
||
|
||
void MultiMediaSourceMuxer::createGopCacheIfNeed() {
|
||
if (_ring) {
|
||
return;
|
||
}
|
||
weak_ptr<MultiMediaSourceMuxer> weak_self = shared_from_this();
|
||
auto src = std::make_shared<MediaSourceForMuxer>(weak_self.lock());
|
||
_ring = std::make_shared<RingType>(1024, [weak_self, src](int size) {
|
||
if (auto strong_self = weak_self.lock()) {
|
||
// 切换到归属线程
|
||
strong_self->getOwnerPoller(MediaSource::NullMediaSource())->async([=]() {
|
||
strong_self->onReaderChanged(*src, strong_self->totalReaderCount());
|
||
});
|
||
}
|
||
});
|
||
}
|
||
|
||
void MultiMediaSourceMuxer::resetTracks() {
|
||
MediaSink::resetTracks();
|
||
|
||
if (_rtmp) {
|
||
_rtmp->resetTracks();
|
||
}
|
||
if (_rtsp) {
|
||
_rtsp->resetTracks();
|
||
}
|
||
if (_ts) {
|
||
_ts->resetTracks();
|
||
}
|
||
if (_fmp4) {
|
||
_fmp4->resetTracks();
|
||
}
|
||
if (_hls_fmp4) {
|
||
_hls_fmp4->resetTracks();
|
||
}
|
||
if (_hls) {
|
||
_hls->resetTracks();
|
||
}
|
||
if (_mp4) {
|
||
_mp4->resetTracks();
|
||
}
|
||
}
|
||
|
||
bool MultiMediaSourceMuxer::onTrackFrame(const Frame::Ptr &frame) {
|
||
if (_option.modify_stamp != ProtocolOption::kModifyStampOff) {
|
||
// 时间戳不采用原始的绝对时间戳
|
||
const_cast<Frame::Ptr&>(frame) = std::make_shared<FrameStamp>(frame, _stamps[frame->getIndex()], _option.modify_stamp);
|
||
}
|
||
return _paced_sender ? _paced_sender->inputFrame(frame) : onTrackFrame_l(frame);
|
||
}
|
||
|
||
bool MultiMediaSourceMuxer::onTrackFrame_l(const Frame::Ptr &frame) {
|
||
bool ret = false;
|
||
if (_rtmp) {
|
||
ret = _rtmp->inputFrame(frame) ? true : ret;
|
||
}
|
||
if (_rtsp) {
|
||
ret = _rtsp->inputFrame(frame) ? true : ret;
|
||
}
|
||
if (_ts) {
|
||
ret = _ts->inputFrame(frame) ? true : ret;
|
||
}
|
||
|
||
if (_hls) {
|
||
ret = _hls->inputFrame(frame) ? true : ret;
|
||
}
|
||
|
||
if (_hls_fmp4) {
|
||
ret = _hls_fmp4->inputFrame(frame) ? true : ret;
|
||
}
|
||
|
||
if (_mp4) {
|
||
ret = _mp4->inputFrame(frame) ? true : ret;
|
||
}
|
||
if (_fmp4) {
|
||
ret = _fmp4->inputFrame(frame) ? true : ret;
|
||
}
|
||
if (_ring) {
|
||
// 此场景由于直接转发，可能存在切换线程引起的数据被缓存在管道，所以需要CacheAbleFrame
|
||
const_cast<Frame::Ptr &>(frame) = Frame::getCacheAbleFrame(frame);
|
||
if (frame->getTrackType() == TrackVideo) {
|
||
// 视频时，遇到第一帧配置帧或关键帧则标记为gop开始处
|
||
auto video_key_pos = frame->keyFrame() || frame->configFrame();
|
||
_ring->write(frame, video_key_pos && !_video_key_pos);
|
||
if (!frame->dropAble()) {
|
||
_video_key_pos = video_key_pos;
|
||
}
|
||
} else {
|
||
// 没有视频时，设置is_key为true，目的是关闭gop缓存
|
||
_ring->write(frame, !haveVideo());
|
||
}
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
bool MultiMediaSourceMuxer::isEnabled(){
|
||
GET_CONFIG(uint32_t, stream_none_reader_delay_ms, General::kStreamNoneReaderDelayMS);
|
||
if (!_is_enable || _last_check.elapsedTime() > stream_none_reader_delay_ms) {
|
||
//无人观看时，每次检查是否真的无人观看
|
||
//有人观看时，则延迟一定时间检查一遍是否无人观看了(节省性能)
|
||
_is_enable = (_rtmp ? _rtmp->isEnabled() : false) ||
|
||
(_rtsp ? _rtsp->isEnabled() : false) ||
|
||
(_ts ? _ts->isEnabled() : false) ||
|
||
(_fmp4 ? _fmp4->isEnabled() : false) ||
|
||
(_ring ? (bool)_ring->readerCount() : false) ||
|
||
(_hls ? _hls->isEnabled() : false) ||
|
||
(_hls_fmp4 ? _hls_fmp4->isEnabled() : false) ||
|
||
_mp4;
|
||
|
||
if (_is_enable) {
|
||
//无人观看时，不刷新计时器,因为无人观看时每次都会检查一遍，所以刷新计数器无意义且浪费cpu
|
||
_last_check.resetTime();
|
||
}
|
||
}
|
||
return _is_enable;
|
||
}
|
||
|
||
}//namespace mediakit
|