mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-12-02 00:12:33 +08:00
882 lines
29 KiB
C++
882 lines
29 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 <mutex>
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#include "Util/util.h"
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#include "Util/NoticeCenter.h"
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#include "Network/sockutil.h"
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#include "Network/Session.h"
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#include "MediaSource.h"
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#include "Common/config.h"
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#include "Common/Parser.h"
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#include "Common/MultiMediaSourceMuxer.h"
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#include "Record/MP4Reader.h"
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#include "PacketCache.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::MediaSource);
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}
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namespace mediakit {
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static recursive_mutex s_media_source_mtx;
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using StreamMap = unordered_map<string/*strema_id*/, weak_ptr<MediaSource> >;
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using AppStreamMap = unordered_map<string/*app*/, StreamMap>;
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using VhostAppStreamMap = unordered_map<string/*vhost*/, AppStreamMap>;
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using SchemaVhostAppStreamMap = unordered_map<string/*schema*/, VhostAppStreamMap>;
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static SchemaVhostAppStreamMap s_media_source_map;
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string getOriginTypeString(MediaOriginType type){
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#define SWITCH_CASE(type) case MediaOriginType::type : return #type
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switch (type) {
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SWITCH_CASE(unknown);
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SWITCH_CASE(rtmp_push);
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SWITCH_CASE(rtsp_push);
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SWITCH_CASE(rtp_push);
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SWITCH_CASE(pull);
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SWITCH_CASE(ffmpeg_pull);
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SWITCH_CASE(mp4_vod);
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SWITCH_CASE(device_chn);
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SWITCH_CASE(rtc_push);
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SWITCH_CASE(srt_push);
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default : return "unknown";
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////
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ProtocolOption::ProtocolOption() {
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mINI ini;
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auto &config = mINI::Instance();
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static auto sz = strlen(Protocol::kFieldName);
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for (auto it = config.lower_bound(Protocol::kFieldName); it != config.end() && start_with(it->first, Protocol::kFieldName); ++it) {
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ini.emplace(it->first.substr(sz), it->second);
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}
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load(ini);
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////////////////
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struct MediaSourceNull : public MediaSource {
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MediaSourceNull() : MediaSource("schema", MediaTuple{"vhost", "app", "stream", ""}) {};
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int readerCount() override { return 0; }
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};
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MediaSource &MediaSource::NullMediaSource() {
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static std::shared_ptr<MediaSource> s_null = std::make_shared<MediaSourceNull>();
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return *s_null;
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}
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MediaSource::MediaSource(const string &schema, const MediaTuple& tuple): _tuple(tuple) {
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GET_CONFIG(bool, enableVhost, General::kEnableVhost);
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if (!enableVhost || _tuple.vhost.empty()) {
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_tuple.vhost = DEFAULT_VHOST;
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}
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_schema = schema;
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_create_stamp = time(NULL);
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}
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MediaSource::~MediaSource() {
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try {
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unregist();
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} catch (std::exception &ex) {
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WarnL << "Exception occurred: " << ex.what();
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}
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}
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std::shared_ptr<void> MediaSource::getOwnership() {
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if (_owned.test_and_set()) {
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//已经被所有
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return nullptr;
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}
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weak_ptr<MediaSource> weak_self = shared_from_this();
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//确保返回的Ownership智能指针不为空，0x01无实际意义
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return std::shared_ptr<void>((void *) 0x01, [weak_self](void *ptr) {
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auto strong_self = weak_self.lock();
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if (strong_self) {
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strong_self->_owned.clear();
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}
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});
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}
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int MediaSource::getBytesSpeed(TrackType type){
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if(type == TrackInvalid || type == TrackMax){
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return _speed[TrackVideo].getSpeed() + _speed[TrackAudio].getSpeed();
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}
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return _speed[type].getSpeed();
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}
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uint64_t MediaSource::getAliveSecond() const {
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//使用Ticker对象获取存活时间的目的是防止修改系统时间导致回退
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return _ticker.createdTime() / 1000;
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}
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vector<Track::Ptr> MediaSource::getTracks(bool ready) const {
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auto listener = _listener.lock();
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if(!listener){
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return vector<Track::Ptr>();
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}
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return listener->getMediaTracks(const_cast<MediaSource &>(*this), ready);
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}
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void MediaSource::setListener(const std::weak_ptr<MediaSourceEvent> &listener){
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_listener = listener;
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}
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std::weak_ptr<MediaSourceEvent> MediaSource::getListener() const {
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return _listener;
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}
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int MediaSource::totalReaderCount(){
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auto listener = _listener.lock();
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if(!listener){
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return readerCount();
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}
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return listener->totalReaderCount(*this);
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}
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MediaOriginType MediaSource::getOriginType() const {
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auto listener = _listener.lock();
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if (!listener) {
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return MediaOriginType::unknown;
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}
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return listener->getOriginType(const_cast<MediaSource &>(*this));
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}
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string MediaSource::getOriginUrl() const {
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auto listener = _listener.lock();
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if (!listener) {
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return getUrl();
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}
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auto ret = listener->getOriginUrl(const_cast<MediaSource &>(*this));
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if (!ret.empty()) {
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return ret;
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}
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return getUrl();
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}
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std::shared_ptr<SockInfo> MediaSource::getOriginSock() const {
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auto listener = _listener.lock();
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if (!listener) {
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return nullptr;
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}
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return listener->getOriginSock(const_cast<MediaSource &>(*this));
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}
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bool MediaSource::seekTo(uint32_t stamp) {
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auto listener = _listener.lock();
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if(!listener){
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return false;
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}
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return listener->seekTo(*this, stamp);
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}
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bool MediaSource::pause(bool pause) {
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auto listener = _listener.lock();
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if (!listener) {
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return false;
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}
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return listener->pause(*this, pause);
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}
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bool MediaSource::speed(float speed) {
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auto listener = _listener.lock();
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if (!listener) {
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return false;
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}
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return listener->speed(*this, speed);
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}
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bool MediaSource::close(bool force) {
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auto listener = _listener.lock();
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if (!listener) {
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return false;
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}
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if (!force && totalReaderCount()) {
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//有人观看，不强制关闭
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return false;
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}
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return listener->close(*this);
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}
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float MediaSource::getLossRate(mediakit::TrackType type) {
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auto listener = _listener.lock();
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if (!listener) {
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return -1;
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}
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return listener->getLossRate(*this, type);
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}
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toolkit::EventPoller::Ptr MediaSource::getOwnerPoller() {
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toolkit::EventPoller::Ptr ret;
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auto listener = _listener.lock();
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if (listener) {
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return listener->getOwnerPoller(*this);
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}
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throw std::runtime_error(toolkit::demangle(typeid(*this).name()) + "::getOwnerPoller failed: " + getUrl());
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}
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std::shared_ptr<MultiMediaSourceMuxer> MediaSource::getMuxer() const {
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auto listener = _listener.lock();
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return listener ? listener->getMuxer(const_cast<MediaSource&>(*this)) : nullptr;
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}
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std::shared_ptr<RtpProcess> MediaSource::getRtpProcess() const {
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auto listener = _listener.lock();
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return listener ? listener->getRtpProcess(const_cast<MediaSource&>(*this)) : nullptr;
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}
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void MediaSource::onReaderChanged(int size) {
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try {
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weak_ptr<MediaSource> weak_self = shared_from_this();
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getOwnerPoller()->async([weak_self, size]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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return;
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}
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auto listener = strong_self->_listener.lock();
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if (listener) {
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listener->onReaderChanged(*strong_self, size);
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}
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});
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} catch (MediaSourceEvent::NotImplemented &ex) {
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// 未实现接口，应该打印异常
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WarnL << ex.what();
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} catch (...) {
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// getOwnerPoller()接口抛异常机制应该只对外不对内
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// 所以listener已经销毁导致获取归属线程失败的异常直接忽略
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}
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}
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bool MediaSource::setupRecord(Recorder::type type, bool start, const string &custom_path, size_t max_second){
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auto listener = _listener.lock();
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if (!listener) {
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WarnL << "未设置MediaSource的事件监听者，setupRecord失败:" << getUrl();
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return false;
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}
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return listener->setupRecord(*this, type, start, custom_path, max_second);
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}
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bool MediaSource::isRecording(Recorder::type type){
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auto listener = _listener.lock();
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if(!listener){
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return false;
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}
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return listener->isRecording(*this, type);
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}
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void MediaSource::startSendRtp(const MediaSourceEvent::SendRtpArgs &args, const std::function<void(uint16_t, const toolkit::SockException &)> cb) {
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auto listener = _listener.lock();
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if (!listener) {
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cb(0, SockException(Err_other, "尚未设置事件监听器"));
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return;
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}
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return listener->startSendRtp(*this, args, cb);
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}
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bool MediaSource::stopSendRtp(const string &ssrc) {
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auto listener = _listener.lock();
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if (!listener) {
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return false;
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}
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return listener->stopSendRtp(*this, ssrc);
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}
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template<typename MAP, typename LIST, typename First, typename ...KeyTypes>
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static void for_each_media_l(const MAP &map, LIST &list, const First &first, const KeyTypes &...keys) {
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if (first.empty()) {
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for (auto &pr : map) {
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for_each_media_l(pr.second, list, keys...);
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}
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return;
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}
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auto it = map.find(first);
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if (it != map.end()) {
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for_each_media_l(it->second, list, keys...);
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}
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}
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template<typename LIST, typename Ptr>
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static void emplace_back(LIST &list, const Ptr &ptr) {
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auto src = ptr.lock();
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if (src) {
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list.emplace_back(std::move(src));
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}
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}
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template<typename MAP, typename LIST, typename First>
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static void for_each_media_l(const MAP &map, LIST &list, const First &first) {
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if (first.empty()) {
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for (auto &pr : map) {
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emplace_back(list, pr.second);
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}
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return;
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}
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auto it = map.find(first);
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if (it != map.end()) {
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emplace_back(list, it->second);
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}
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}
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void MediaSource::for_each_media(const function<void(const Ptr &src)> &cb,
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const string &schema,
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const string &vhost,
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const string &app,
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const string &stream) {
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deque<Ptr> src_list;
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{
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lock_guard<recursive_mutex> lock(s_media_source_mtx);
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for_each_media_l(s_media_source_map, src_list, schema, vhost, app, stream);
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}
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for (auto &src : src_list) {
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cb(src);
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}
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}
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static MediaSource::Ptr find_l(const string &schema, const string &vhost_in, const string &app, const string &id, bool from_mp4) {
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string vhost = vhost_in;
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GET_CONFIG(bool, enableVhost, General::kEnableVhost);
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if(vhost.empty() || !enableVhost){
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vhost = DEFAULT_VHOST;
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}
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if (app.empty() || id.empty()) {
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//如果未指定app与stream id，那么就是遍历而非查找，所以应该返回查找失败
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return nullptr;
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}
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MediaSource::Ptr ret;
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MediaSource::for_each_media([&](const MediaSource::Ptr &src) { ret = std::move(const_cast<MediaSource::Ptr &>(src)); }, schema, vhost, app, id);
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if(!ret && from_mp4 && schema != HLS_SCHEMA){
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//未找到媒体源，则读取mp4创建一个
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//播放hls不触发mp4点播(因为HLS也可以用于录像，不是纯粹的直播)
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ret = MediaSource::createFromMP4(schema, vhost, app, id);
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}
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return ret;
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}
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static void findAsync_l(const MediaInfo &info, const std::shared_ptr<Session> &session, bool retry,
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const function<void(const MediaSource::Ptr &src)> &cb){
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auto src = find_l(info.schema, info.vhost, info.app, info.stream, true);
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if (src || !retry) {
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cb(src);
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return;
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}
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GET_CONFIG(int, maxWaitMS, General::kMaxStreamWaitTimeMS);
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void *listener_tag = session.get();
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auto poller = session->getPoller();
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std::shared_ptr<atomic_flag> invoked(new atomic_flag{false});
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auto cb_once = [cb, invoked](const MediaSource::Ptr &src) {
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if (invoked->test_and_set()) {
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//回调已经执行过了
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return;
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}
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cb(src);
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};
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auto on_timeout = poller->doDelayTask(maxWaitMS, [cb_once, listener_tag]() {
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// 最多等待一定时间，如在这个时间内，流还未注册上，则返回空
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NoticeCenter::Instance().delListener(listener_tag, Broadcast::kBroadcastMediaChanged);
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cb_once(nullptr);
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return 0;
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});
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auto cancel_all = [on_timeout, listener_tag]() {
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//取消延时任务，防止多次回调
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on_timeout->cancel();
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//取消媒体注册事件监听
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NoticeCenter::Instance().delListener(listener_tag, Broadcast::kBroadcastMediaChanged);
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};
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weak_ptr<Session> weak_session = session;
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auto on_register = [weak_session, info, cb_once, cancel_all, poller](BroadcastMediaChangedArgs) {
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if (!bRegist ||
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sender.getSchema() != info.schema ||
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!equalMediaTuple(sender.getMediaTuple(), info)) {
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//不是自己感兴趣的事件，忽略之
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return;
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}
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poller->async([weak_session, cancel_all, info, cb_once]() {
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cancel_all();
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if (auto strong_session = weak_session.lock()) {
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//播发器请求的流终于注册上了，切换到自己的线程再回复
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DebugL << "收到媒体注册事件,回复播放器:" << info.getUrl();
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//再找一遍媒体源，一般能找到
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findAsync_l(info, strong_session, false, cb_once);
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}
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}, false);
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};
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//监听媒体注册事件
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NoticeCenter::Instance().addListener(listener_tag, Broadcast::kBroadcastMediaChanged, on_register);
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function<void()> close_player = [cb_once, cancel_all, poller]() {
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poller->async([cancel_all, cb_once]() {
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cancel_all();
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//告诉播放器，流不存在，这样会立即断开播放器
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cb_once(nullptr);
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});
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};
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//广播未找到流,此时可以立即去拉流，这样还来得及
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NOTICE_EMIT(BroadcastNotFoundStreamArgs, Broadcast::kBroadcastNotFoundStream, info, *session, close_player);
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}
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void MediaSource::findAsync(const MediaInfo &info, const std::shared_ptr<Session> &session, const function<void (const Ptr &)> &cb) {
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return findAsync_l(info, session, true, cb);
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}
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MediaSource::Ptr MediaSource::find(const string &schema, const string &vhost, const string &app, const string &id, bool from_mp4) {
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return find_l(schema, vhost, app, id, from_mp4);
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}
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MediaSource::Ptr MediaSource::find(const string &vhost, const string &app, const string &stream_id, bool from_mp4) {
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auto src = MediaSource::find(RTMP_SCHEMA, vhost, app, stream_id, from_mp4);
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if (src) {
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return src;
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}
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src = MediaSource::find(RTSP_SCHEMA, vhost, app, stream_id, from_mp4);
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if (src) {
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return src;
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}
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src = MediaSource::find(TS_SCHEMA, vhost, app, stream_id, from_mp4);
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if (src) {
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return src;
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}
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src = MediaSource::find(FMP4_SCHEMA, vhost, app, stream_id, from_mp4);
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if (src) {
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return src;
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}
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src = MediaSource::find(HLS_SCHEMA, vhost, app, stream_id, from_mp4);
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if (src) {
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return src;
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}
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return MediaSource::find(HLS_FMP4_SCHEMA, vhost, app, stream_id, from_mp4);
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}
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void MediaSource::emitEvent(bool regist){
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auto listener = _listener.lock();
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if (listener) {
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//触发回调
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listener->onRegist(*this, regist);
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}
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//触发广播
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NOTICE_EMIT(BroadcastMediaChangedArgs, Broadcast::kBroadcastMediaChanged, regist, *this);
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InfoL << (regist ? "媒体注册:" : "媒体注销:") << getUrl();
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}
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void MediaSource::regist() {
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{
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//减小互斥锁临界区
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lock_guard<recursive_mutex> lock(s_media_source_mtx);
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auto &ref = s_media_source_map[_schema][_tuple.vhost][_tuple.app][_tuple.stream];
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auto src = ref.lock();
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if (src) {
|
||
if (src.get() == this) {
|
||
return;
|
||
}
|
||
//增加判断, 防止当前流已注册时再次注册
|
||
throw std::invalid_argument("media source already existed:" + getUrl());
|
||
}
|
||
ref = shared_from_this();
|
||
}
|
||
emitEvent(true);
|
||
}
|
||
|
||
template<typename MAP, typename First, typename ...KeyTypes>
|
||
static bool erase_media_source(bool &hit, const MediaSource *thiz, MAP &map, const First &first, const KeyTypes &...keys) {
|
||
auto it = map.find(first);
|
||
if (it != map.end() && erase_media_source(hit, thiz, it->second, keys...)) {
|
||
map.erase(it);
|
||
}
|
||
return map.empty();
|
||
}
|
||
|
||
template<typename MAP, typename First>
|
||
static bool erase_media_source(bool &hit, const MediaSource *thiz, MAP &map, const First &first) {
|
||
auto it = map.find(first);
|
||
if (it != map.end()) {
|
||
auto src = it->second.lock();
|
||
if (!src || src.get() == thiz) {
|
||
//对象已经销毁或者对象就是自己，那么移除之
|
||
map.erase(it);
|
||
hit = true;
|
||
}
|
||
}
|
||
return map.empty();
|
||
}
|
||
|
||
//反注册该源
|
||
bool MediaSource::unregist() {
|
||
bool ret = false;
|
||
{
|
||
//减小互斥锁临界区
|
||
lock_guard<recursive_mutex> lock(s_media_source_mtx);
|
||
erase_media_source(ret, this, s_media_source_map, _schema, _tuple.vhost, _tuple.app, _tuple.stream);
|
||
}
|
||
|
||
if (ret) {
|
||
emitEvent(false);
|
||
}
|
||
return ret;
|
||
}
|
||
|
||
bool equalMediaTuple(const MediaTuple& a, const MediaTuple& b) {
|
||
return a.vhost == b.vhost && a.app == b.app && a.stream == b.stream;
|
||
}
|
||
/////////////////////////////////////MediaInfo//////////////////////////////////////
|
||
|
||
void MediaInfo::parse(const std::string &url_in){
|
||
full_url = url_in;
|
||
auto url = url_in;
|
||
auto pos = url.find("?");
|
||
if (pos != string::npos) {
|
||
params = url.substr(pos + 1);
|
||
url.erase(pos);
|
||
}
|
||
|
||
auto schema_pos = url.find("://");
|
||
if (schema_pos != string::npos) {
|
||
schema = url.substr(0, schema_pos);
|
||
} else {
|
||
schema_pos = -3;
|
||
}
|
||
auto split_vec = split(url.substr(schema_pos + 3), "/");
|
||
if (split_vec.size() > 0) {
|
||
splitUrl(split_vec[0], host, port);
|
||
vhost = host;
|
||
if (vhost == "localhost" || isIP(vhost.data())) {
|
||
//如果访问的是localhost或ip，那么则为默认虚拟主机
|
||
vhost = DEFAULT_VHOST;
|
||
}
|
||
}
|
||
if (split_vec.size() > 1) {
|
||
app = split_vec[1];
|
||
}
|
||
if (split_vec.size() > 2) {
|
||
string stream_id;
|
||
for (size_t i = 2; i < split_vec.size(); ++i) {
|
||
stream_id.append(split_vec[i] + "/");
|
||
}
|
||
if (stream_id.back() == '/') {
|
||
stream_id.pop_back();
|
||
}
|
||
stream = stream_id;
|
||
}
|
||
|
||
auto kv = Parser::parseArgs(params);
|
||
auto it = kv.find(VHOST_KEY);
|
||
if (it != kv.end()) {
|
||
vhost = it->second;
|
||
}
|
||
|
||
GET_CONFIG(bool, enableVhost, General::kEnableVhost);
|
||
if (!enableVhost || vhost.empty()) {
|
||
//如果关闭虚拟主机或者虚拟主机为空，则设置虚拟主机为默认
|
||
vhost = DEFAULT_VHOST;
|
||
}
|
||
}
|
||
|
||
MediaSource::Ptr MediaSource::createFromMP4(const string &schema, const string &vhost, const string &app, const string &stream, const string &file_path , bool check_app){
|
||
GET_CONFIG(string, appName, Record::kAppName);
|
||
if (check_app && app != appName) {
|
||
return nullptr;
|
||
}
|
||
#ifdef ENABLE_MP4
|
||
try {
|
||
MediaTuple tuple = {vhost, app, stream, ""};
|
||
auto reader = std::make_shared<MP4Reader>(tuple, file_path);
|
||
reader->startReadMP4();
|
||
return MediaSource::find(schema, vhost, app, stream);
|
||
} catch (std::exception &ex) {
|
||
WarnL << ex.what();
|
||
return nullptr;
|
||
}
|
||
#else
|
||
WarnL << "创建MP4点播失败，请编译时打开\"ENABLE_MP4\"选项";
|
||
return nullptr;
|
||
#endif //ENABLE_MP4
|
||
}
|
||
|
||
/////////////////////////////////////MediaSourceEvent//////////////////////////////////////
|
||
|
||
void MediaSourceEvent::onReaderChanged(MediaSource &sender, int size){
|
||
GET_CONFIG(bool, enable, General::kBroadcastPlayerCountChanged);
|
||
if (enable) {
|
||
NOTICE_EMIT(BroadcastPlayerCountChangedArgs, Broadcast::kBroadcastPlayerCountChanged, sender.getMediaTuple(), sender.totalReaderCount());
|
||
}
|
||
if (size || sender.totalReaderCount()) {
|
||
//还有人观看该视频，不触发关闭事件
|
||
_async_close_timer = nullptr;
|
||
return;
|
||
}
|
||
//没有任何人观看该视频源，表明该源可以关闭了
|
||
GET_CONFIG(string, record_app, Record::kAppName);
|
||
GET_CONFIG(int, stream_none_reader_delay, General::kStreamNoneReaderDelayMS);
|
||
//如果mp4点播, 无人观看时我们强制关闭点播
|
||
bool is_mp4_vod = sender.getMediaTuple().app == record_app;
|
||
weak_ptr<MediaSource> weak_sender = sender.shared_from_this();
|
||
|
||
_async_close_timer = std::make_shared<Timer>(stream_none_reader_delay / 1000.0f, [weak_sender, is_mp4_vod]() {
|
||
auto strong_sender = weak_sender.lock();
|
||
if (!strong_sender) {
|
||
//对象已经销毁
|
||
return false;
|
||
}
|
||
|
||
if (strong_sender->totalReaderCount()) {
|
||
//还有人观看该视频，不触发关闭事件
|
||
return false;
|
||
}
|
||
|
||
if (!is_mp4_vod) {
|
||
auto muxer = strong_sender->getMuxer();
|
||
if (muxer && muxer->getOption().auto_close) {
|
||
// 此流被标记为无人观看自动关闭流
|
||
WarnL << "Auto cloe stream when none reader: " << strong_sender->getUrl();
|
||
strong_sender->close(false);
|
||
} else {
|
||
// 直播时触发无人观看事件，让开发者自行选择是否关闭
|
||
NOTICE_EMIT(BroadcastStreamNoneReaderArgs, Broadcast::kBroadcastStreamNoneReader, *strong_sender);
|
||
}
|
||
} else {
|
||
//这个是mp4点播，我们自动关闭
|
||
WarnL << "MP4点播无人观看,自动关闭:" << strong_sender->getUrl();
|
||
strong_sender->close(false);
|
||
}
|
||
return false;
|
||
}, nullptr);
|
||
}
|
||
|
||
string MediaSourceEvent::getOriginUrl(MediaSource &sender) const {
|
||
return sender.getUrl();
|
||
}
|
||
|
||
MediaOriginType MediaSourceEventInterceptor::getOriginType(MediaSource &sender) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getOriginType(sender);
|
||
}
|
||
return listener->getOriginType(sender);
|
||
}
|
||
|
||
string MediaSourceEventInterceptor::getOriginUrl(MediaSource &sender) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getOriginUrl(sender);
|
||
}
|
||
auto ret = listener->getOriginUrl(sender);
|
||
if (!ret.empty()) {
|
||
return ret;
|
||
}
|
||
return MediaSourceEvent::getOriginUrl(sender);
|
||
}
|
||
|
||
std::shared_ptr<SockInfo> MediaSourceEventInterceptor::getOriginSock(MediaSource &sender) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getOriginSock(sender);
|
||
}
|
||
return listener->getOriginSock(sender);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::seekTo(MediaSource &sender, uint32_t stamp) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::seekTo(sender, stamp);
|
||
}
|
||
return listener->seekTo(sender, stamp);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::pause(MediaSource &sender, bool pause) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::pause(sender, pause);
|
||
}
|
||
return listener->pause(sender, pause);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::speed(MediaSource &sender, float speed) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::speed(sender, speed);
|
||
}
|
||
return listener->speed(sender, speed);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::close(MediaSource &sender) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::close(sender);
|
||
}
|
||
return listener->close(sender);
|
||
}
|
||
|
||
int MediaSourceEventInterceptor::totalReaderCount(MediaSource &sender) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::totalReaderCount(sender);
|
||
}
|
||
return listener->totalReaderCount(sender);
|
||
}
|
||
|
||
void MediaSourceEventInterceptor::onReaderChanged(MediaSource &sender, int size) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::onReaderChanged(sender, size);
|
||
}
|
||
listener->onReaderChanged(sender, size);
|
||
}
|
||
|
||
void MediaSourceEventInterceptor::onRegist(MediaSource &sender, bool regist) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::onRegist(sender, regist);
|
||
}
|
||
listener->onRegist(sender, regist);
|
||
}
|
||
|
||
float MediaSourceEventInterceptor::getLossRate(MediaSource &sender, TrackType type) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getLossRate(sender, type);
|
||
}
|
||
return listener->getLossRate(sender, type);
|
||
}
|
||
|
||
toolkit::EventPoller::Ptr MediaSourceEventInterceptor::getOwnerPoller(MediaSource &sender) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getOwnerPoller(sender);
|
||
}
|
||
return listener->getOwnerPoller(sender);
|
||
}
|
||
|
||
std::shared_ptr<MultiMediaSourceMuxer> MediaSourceEventInterceptor::getMuxer(MediaSource &sender) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getMuxer(sender);
|
||
}
|
||
return listener->getMuxer(sender);
|
||
}
|
||
|
||
std::shared_ptr<RtpProcess> MediaSourceEventInterceptor::getRtpProcess(MediaSource &sender) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getRtpProcess(sender);
|
||
}
|
||
return listener->getRtpProcess(sender);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::setupRecord(MediaSource &sender, Recorder::type type, bool start, const string &custom_path, size_t max_second) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::setupRecord(sender, type, start, custom_path, max_second);
|
||
}
|
||
return listener->setupRecord(sender, type, start, custom_path, max_second);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::isRecording(MediaSource &sender, Recorder::type type) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::isRecording(sender, type);
|
||
}
|
||
return listener->isRecording(sender, type);
|
||
}
|
||
|
||
vector<Track::Ptr> MediaSourceEventInterceptor::getMediaTracks(MediaSource &sender, bool trackReady) const {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::getMediaTracks(sender, trackReady);
|
||
}
|
||
return listener->getMediaTracks(sender, trackReady);
|
||
}
|
||
|
||
void MediaSourceEventInterceptor::startSendRtp(MediaSource &sender, const MediaSourceEvent::SendRtpArgs &args, const std::function<void(uint16_t, const toolkit::SockException &)> cb) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::startSendRtp(sender, args, cb);
|
||
}
|
||
listener->startSendRtp(sender, args, cb);
|
||
}
|
||
|
||
bool MediaSourceEventInterceptor::stopSendRtp(MediaSource &sender, const string &ssrc) {
|
||
auto listener = _listener.lock();
|
||
if (!listener) {
|
||
return MediaSourceEvent::stopSendRtp(sender, ssrc);
|
||
}
|
||
return listener->stopSendRtp(sender, ssrc);
|
||
}
|
||
|
||
void MediaSourceEventInterceptor::setDelegate(const std::weak_ptr<MediaSourceEvent> &listener) {
|
||
if (listener.lock().get() == this) {
|
||
throw std::invalid_argument("can not set self as a delegate");
|
||
}
|
||
_listener = listener;
|
||
}
|
||
|
||
std::shared_ptr<MediaSourceEvent> MediaSourceEventInterceptor::getDelegate() const {
|
||
return _listener.lock();
|
||
}
|
||
|
||
/////////////////////////////////////FlushPolicy//////////////////////////////////////
|
||
|
||
static bool isFlushAble_default(bool is_video, uint64_t last_stamp, uint64_t new_stamp, size_t cache_size) {
|
||
if (new_stamp + 500 < last_stamp) {
|
||
//时间戳回退比较大(可能seek中)，由于rtp中时间戳是pts，是可能存在一定程度的回退的
|
||
return true;
|
||
}
|
||
|
||
//时间戳发送变化或者缓存超过1024个,sendmsg接口一般最多只能发送1024个数据包
|
||
return last_stamp != new_stamp || cache_size >= 1024;
|
||
}
|
||
|
||
static bool isFlushAble_merge(bool is_video, uint64_t last_stamp, uint64_t new_stamp, size_t cache_size, int merge_ms) {
|
||
if (new_stamp + 500 < last_stamp) {
|
||
//时间戳回退比较大(可能seek中)，由于rtp中时间戳是pts，是可能存在一定程度的回退的
|
||
return true;
|
||
}
|
||
|
||
if (new_stamp > last_stamp + merge_ms) {
|
||
//时间戳增量超过合并写阈值
|
||
return true;
|
||
}
|
||
|
||
//缓存数超过1024个,这个逻辑用于避免时间戳异常的流导致的内存暴增问题
|
||
//而且sendmsg接口一般最多只能发送1024个数据包
|
||
return cache_size >= 1024;
|
||
}
|
||
|
||
bool FlushPolicy::isFlushAble(bool is_video, bool is_key, uint64_t new_stamp, size_t cache_size) {
|
||
bool flush_flag = false;
|
||
if (is_key && is_video) {
|
||
//遇到关键帧flush掉前面的数据，确保关键帧为该组数据的第一帧，确保GOP缓存有效
|
||
flush_flag = true;
|
||
} else {
|
||
GET_CONFIG(int, mergeWriteMS, General::kMergeWriteMS);
|
||
if (mergeWriteMS <= 0) {
|
||
//关闭了合并写或者合并写阈值小于等于0
|
||
flush_flag = isFlushAble_default(is_video, _last_stamp[is_video], new_stamp, cache_size);
|
||
} else {
|
||
flush_flag = isFlushAble_merge(is_video, _last_stamp[is_video], new_stamp, cache_size, mergeWriteMS);
|
||
}
|
||
}
|
||
|
||
if (flush_flag) {
|
||
_last_stamp[is_video] = new_stamp;
|
||
}
|
||
return flush_flag;
|
||
}
|
||
|
||
} /* namespace mediakit */ |