mirror of
https://github.com/ZLMediaKit/ZLMediaKit.git
synced 2024-10-31 08:39:34 +08:00
376 lines
13 KiB
C++
376 lines
13 KiB
C++
#include "Util/util.h"
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#include <memory>
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#include "Common/Parser.h"
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#include "Common/config.h"
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#include "SrtTransportImp.hpp"
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namespace SRT {
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SrtTransportImp::SrtTransportImp(const EventPoller::Ptr &poller)
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: SrtTransport(poller) {}
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SrtTransportImp::~SrtTransportImp() {
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InfoP(this);
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uint64_t duration = _alive_ticker.createdTime() / 1000;
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WarnP(this) << (_is_pusher ? "srt 推流器(" : "srt 播放器(") << _media_info.shortUrl() << ")断开,耗时(s):" << duration;
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// 流量统计事件广播
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GET_CONFIG(uint32_t, iFlowThreshold, General::kFlowThreshold);
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if (_total_bytes >= iFlowThreshold * 1024) {
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NoticeCenter::Instance().emitEvent(
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Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, !_is_pusher,
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static_cast<SockInfo &>(*this));
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}
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}
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void SrtTransportImp::onHandShakeFinished(std::string &streamid, struct sockaddr_storage *addr) {
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SrtTransport::onHandShakeFinished(streamid,addr);
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// TODO parse stream id like this zlmediakit.com/live/test?token=1213444&type=push
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if (!_addr) {
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_addr.reset(new sockaddr_storage(*((sockaddr_storage *)addr)));
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}
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_is_pusher = false;
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TraceL << " stream id " << streamid;
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if (!parseStreamid(streamid)) {
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onShutdown(SockException(Err_shutdown, "stream id not vaild"));
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return;
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}
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auto params = Parser::parseArgs(_media_info._param_strs);
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if (params["m"] == "publish") {
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_is_pusher = true;
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_decoder = DecoderImp::createDecoder(DecoderImp::decoder_ts, this);
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emitOnPublish();
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} else {
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_is_pusher = false;
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emitOnPlay();
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}
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}
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//
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bool SrtTransportImp::parseStreamid(std::string &streamid) {
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if (!toolkit::start_with(streamid, "#!::")) {
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return false;
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}
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_media_info._schema = SRT_SCHEMA;
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std::string real_streamid = streamid.substr(4);
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std::string vhost, app, stream_name;
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auto params = Parser::parseArgs(real_streamid, ",", "=");
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for (auto it : params) {
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if (it.first == "h") {
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vhost = it.second;
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} else if (it.first == "r") {
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auto tmps = toolkit::split(it.second, "/");
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if (tmps.size() < 2) {
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continue;
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}
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app = tmps[0];
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stream_name = tmps[1];
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} else {
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if (_media_info._param_strs.empty()) {
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_media_info._param_strs = it.first + "=" + it.second;
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} else {
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_media_info._param_strs += "&" + it.first + "=" + it.second;
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}
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}
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}
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if (app == "" || stream_name == "") {
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return false;
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}
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if (vhost != "") {
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_media_info._vhost = vhost;
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} else {
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_media_info._vhost = DEFAULT_VHOST;
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}
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_media_info._app = app;
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_media_info._streamid = stream_name;
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TraceL << " mediainfo=" << _media_info.shortUrl() << " params=" << _media_info._param_strs;
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return true;
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}
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void SrtTransportImp::onSRTData(DataPacket::Ptr pkt) {
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if (!_is_pusher) {
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WarnP(this) << "this is a player data ignore";
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return;
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}
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if (_decoder) {
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_decoder->input(reinterpret_cast<const uint8_t *>(pkt->payloadData()), pkt->payloadSize());
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//TraceL<<" size "<<pkt->payloadSize();
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} else {
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WarnP(this) << " not reach this";
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}
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}
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void SrtTransportImp::onShutdown(const SockException &ex) {
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if (_decoder) {
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_decoder->flush();
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}
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SrtTransport::onShutdown(ex);
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}
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bool SrtTransportImp::close(mediakit::MediaSource &sender) {
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std::string err = StrPrinter << "close media: " << sender.getUrl();
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weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
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getPoller()->async([weak_self, err]() {
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auto strong_self = weak_self.lock();
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if (strong_self) {
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strong_self->onShutdown(SockException(Err_shutdown, err));
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// 主动关闭推流，那么不延时注销
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strong_self->_muxer = nullptr;
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}
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});
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return true;
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}
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// 获取媒体源类型
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mediakit::MediaOriginType SrtTransportImp::getOriginType(mediakit::MediaSource &sender) const {
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return MediaOriginType::srt_push;
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}
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// 获取媒体源url或者文件路径
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std::string SrtTransportImp::getOriginUrl(mediakit::MediaSource &sender) const {
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return _media_info._full_url;
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}
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// 获取媒体源客户端相关信息
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std::shared_ptr<SockInfo> SrtTransportImp::getOriginSock(mediakit::MediaSource &sender) const {
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return static_pointer_cast<SockInfo>(getSession());
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}
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void SrtTransportImp::emitOnPublish() {
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std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
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Broadcast::PublishAuthInvoker invoker = [weak_self](const std::string &err, const ProtocolOption &option) {
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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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strong_self->getPoller()->async([weak_self, err, option](){
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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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if (err.empty()) {
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strong_self->_muxer = std::make_shared<MultiMediaSourceMuxer>(strong_self->_media_info._vhost,
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strong_self->_media_info._app,
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strong_self->_media_info._streamid,0.0f,
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option);
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strong_self->_muxer->setMediaListener(strong_self);
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strong_self->doCachedFunc();
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InfoP(strong_self) << "允许 srt 推流";
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} else {
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WarnP(strong_self) << "禁止 srt 推流:" << err;
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strong_self->onShutdown(SockException(Err_refused, err));
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}
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});
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};
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// 触发推流鉴权事件
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auto flag = NoticeCenter::Instance().emitEvent(
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Broadcast::kBroadcastMediaPublish, MediaOriginType::srt_push, _media_info, invoker,
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static_cast<SockInfo &>(*this));
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if (!flag) {
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// 该事件无人监听,默认不鉴权
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invoker("", ProtocolOption());
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}
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}
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void SrtTransportImp::emitOnPlay() {
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std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
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Broadcast::AuthInvoker invoker = [weak_self](const string &err) {
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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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strong_self->getPoller()->async([strong_self, err] {
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if (err != "") {
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strong_self->onShutdown(SockException(Err_refused, err));
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} else {
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strong_self->doPlay();
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}
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});
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};
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auto flag = NoticeCenter::Instance().emitEvent(
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Broadcast::kBroadcastMediaPlayed, _media_info, invoker, static_cast<SockInfo &>(*this));
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if (!flag) {
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doPlay();
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}
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}
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void SrtTransportImp::doPlay() {
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// 异步查找直播流
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MediaInfo info = _media_info;
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info._schema = TS_SCHEMA;
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std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
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MediaSource::findAsync(info, getSession(), [weak_self](const MediaSource::Ptr &src) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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// 本对象已经销毁
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TraceL << "本对象已经销毁";
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return;
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}
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if (!src) {
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// 未找到该流
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TraceL << "未找到该流";
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strong_self->onShutdown(SockException(Err_shutdown));
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} else {
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TraceL << "找到该流";
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auto ts_src = dynamic_pointer_cast<TSMediaSource>(src);
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assert(ts_src);
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ts_src->pause(false);
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strong_self->_ts_reader = ts_src->getRing()->attach(strong_self->getPoller());
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weak_ptr<Session> weak_session = strong_self->getSession();
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strong_self->_ts_reader->setGetInfoCB([weak_session]() { return weak_session.lock(); });
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strong_self->_ts_reader->setDetachCB([weak_self]() {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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// 本对象已经销毁
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return;
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}
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strong_self->onShutdown(SockException(Err_shutdown));
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});
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strong_self->_ts_reader->setReadCB([weak_self](const TSMediaSource::RingDataType &ts_list) {
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auto strong_self = weak_self.lock();
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if (!strong_self) {
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// 本对象已经销毁
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return;
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}
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size_t i = 0;
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auto size = ts_list->size();
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ts_list->for_each([&](const TSPacket::Ptr &ts) { strong_self->onSendTSData(ts, ++i == size); });
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});
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}
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});
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}
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std::string SrtTransportImp::get_peer_ip() {
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if (!_addr) {
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return "::";
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}
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return SockUtil::inet_ntoa((sockaddr *)_addr.get());
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}
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uint16_t SrtTransportImp::get_peer_port() {
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if (!_addr) {
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return 0;
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}
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return SockUtil::inet_port((sockaddr *)_addr.get());
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}
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std::string SrtTransportImp::get_local_ip() {
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auto s = getSession();
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if (s) {
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return s->get_local_ip();
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}
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return "::";
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}
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uint16_t SrtTransportImp::get_local_port() {
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auto s = getSession();
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if (s) {
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return s->get_local_port();
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}
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return 0;
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}
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std::string SrtTransportImp::getIdentifier() const {
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return _media_info._streamid;
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}
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bool SrtTransportImp::inputFrame(const Frame::Ptr &frame) {
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if (_muxer) {
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//TraceL<<"before type "<<frame->getCodecName()<<" dts "<<frame->dts()<<" pts "<<frame->pts();
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auto frame_tmp = std::make_shared<FrameStamp>(frame, _type_to_stamp[frame->getTrackType()],false);
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if(_type_to_stamp.size()>1){
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// 有音视频，检查是否时间戳是否差距过大
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auto diff = _type_to_stamp[TrackType::TrackVideo].getRelativeStamp() - _type_to_stamp[TrackType::TrackAudio].getRelativeStamp();
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if(std::abs(diff) > 5000){
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// 超过5s，应该同步 TODO
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WarnL << _media_info._full_url<<" video or audio not sync : "<<diff;
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}
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}
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//TraceL<<"after type "<<frame_tmp->getCodecName()<<" dts "<<frame_tmp->dts()<<" pts "<<frame_tmp->pts();
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return _muxer->inputFrame(frame_tmp);
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}
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if (_cached_func.size() > 200) {
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WarnL << "cached frame of track(" << frame->getCodecName() << ") is too much, now dropped";
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return false;
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}
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auto frame_cached = Frame::getCacheAbleFrame(frame);
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this, frame_cached]() {
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//TraceL<<"before type "<<frame_cached->getCodecName()<<" dts "<<frame_cached->dts()<<" pts "<<frame_cached->pts();
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auto frame_tmp = std::make_shared<FrameStamp>(frame_cached, _type_to_stamp[frame_cached->getTrackType()],false);
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//TraceL<<"after type "<<frame_tmp->getCodecName()<<" dts "<<frame_tmp->dts()<<" pts "<<frame_tmp->pts();
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_muxer->inputFrame(frame_tmp);
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});
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return true;
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}
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bool SrtTransportImp::addTrack(const Track::Ptr &track) {
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_type_to_stamp.emplace(track->getTrackType(),Stamp());
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if (_muxer) {
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return _muxer->addTrack(track);
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}
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this, track]() { _muxer->addTrack(track); });
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return true;
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}
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void SrtTransportImp::addTrackCompleted() {
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if (_muxer) {
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_muxer->addTrackCompleted();
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} else {
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lock_guard<recursive_mutex> lck(_func_mtx);
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_cached_func.emplace_back([this]() { _muxer->addTrackCompleted(); });
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}
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if(_type_to_stamp.size() >1){
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_type_to_stamp[TrackType::TrackAudio].syncTo(_type_to_stamp[TrackType::TrackVideo]);
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}
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}
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void SrtTransportImp::doCachedFunc() {
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lock_guard<recursive_mutex> lck(_func_mtx);
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for (auto &func : _cached_func) {
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func();
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}
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_cached_func.clear();
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}
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int SrtTransportImp::getLatencyMul() {
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GET_CONFIG(int, latencyMul, kLatencyMul);
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if (latencyMul <= 0) {
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WarnL << "config srt " << kLatencyMul << " not vaild";
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return 4;
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}
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return latencyMul;
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}
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float SrtTransportImp::getTimeOutSec() {
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GET_CONFIG(float, timeOutSec, kTimeOutSec);
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if (timeOutSec <= 0) {
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WarnL << "config srt " << kTimeOutSec << " not vaild";
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return 5.0;
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}
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return timeOutSec;
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}
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int SrtTransportImp::getPktBufSize() {
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// kPktBufSize
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GET_CONFIG(int, pktBufSize, kPktBufSize);
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if (pktBufSize <= 0) {
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WarnL << "config srt " << kPktBufSize << " not vaild";
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return 8912;
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}
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return pktBufSize;
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}
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} // namespace SRT
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