ZLMediaKit/srt/SrtTransportImp.cpp
2022-06-11 21:37:41 +08:00

329 lines
10 KiB
C++

#include "Util/util.h"
#include <memory>
#include "SrtTransportImp.hpp"
namespace SRT {
SrtTransportImp::SrtTransportImp(const EventPoller::Ptr &poller)
: SrtTransport(poller) {}
SrtTransportImp::~SrtTransportImp() {
InfoP(this);
uint64_t duration = _alive_ticker.createdTime() / 1000;
WarnP(this) << (_is_pusher ? "srt 推流器(" : "srt 播放器(") << _media_info._vhost << "/" << _media_info._app << "/"
<< _media_info._streamid << ")断开,耗时(s):" << duration;
// 流量统计事件广播
GET_CONFIG(uint32_t, iFlowThreshold, General::kFlowThreshold);
if (_total_bytes >= iFlowThreshold * 1024) {
NoticeCenter::Instance().emitEvent(
Broadcast::kBroadcastFlowReport, _media_info, _total_bytes, duration, false,
static_cast<SockInfo &>(*this));
}
}
void SrtTransportImp::onHandShakeFinished(std::string &streamid, struct sockaddr_storage *addr) {
// TODO parse stream id like this zlmediakit.com/live/test?token=1213444&type=push
if (!_addr) {
_addr.reset(new sockaddr_storage(*((sockaddr_storage *)addr)));
}
_is_pusher = false;
TraceL << " stream id " << streamid;
if (!parseStreamid(streamid)) {
onShutdown(SockException(Err_shutdown, "stream id not vaild"));
return;
}
auto params = Parser::parseArgs(_media_info._param_strs);
if (params["m"] == "publish") {
_is_pusher = true;
_decoder = DecoderImp::createDecoder(DecoderImp::decoder_ts, this);
emitOnPublish();
} else {
_is_pusher = false;
emitOnPlay();
}
}
//
bool SrtTransportImp::parseStreamid(std::string &streamid) {
if (!toolkit::start_with(streamid, "#!::")) {
return false;
}
_media_info._schema = SRT_SCHEMA;
std::string real_streamid = streamid.substr(4);
std::string vhost, app, stream_name;
auto params = Parser::parseArgs(real_streamid, ",", "=");
for (auto it : params) {
if (it.first == "h") {
vhost = it.second;
} else if (it.first == "r") {
auto tmps = toolkit::split(it.second, "/");
if (tmps.size() < 2) {
continue;
}
app = tmps[0];
stream_name = tmps[1];
} else {
if (_media_info._param_strs.empty()) {
_media_info._param_strs = it.first + "=" + it.second;
} else {
_media_info._param_strs += "&" + it.first + "=" + it.second;
}
}
}
if (app == "" || stream_name == "") {
return false;
}
if (vhost != "") {
_media_info._vhost = vhost;
} else {
_media_info._vhost = DEFAULT_VHOST;
}
_media_info._app = app;
_media_info._streamid = stream_name;
TraceL << " vhost=" << _media_info._vhost << " app=" << _media_info._app << " streamid=" << _media_info._streamid
<< " params=" << _media_info._param_strs;
return true;
}
void SrtTransportImp::onSRTData(DataPacket::Ptr pkt) {
if (!_is_pusher) {
WarnP(this) << "this is a player data ignore";
return;
}
if (_decoder) {
_decoder->input(reinterpret_cast<const uint8_t *>(pkt->payloadData()), pkt->payloadSize());
} else {
WarnP(this) << " not reach this";
}
}
void SrtTransportImp::onShutdown(const SockException &ex) {
SrtTransport::onShutdown(ex);
}
bool SrtTransportImp::close(mediakit::MediaSource &sender, bool force) {
if (!force && totalReaderCount(sender)) {
return false;
}
std::string err = StrPrinter << "close media:" << sender.getSchema() << "/" << sender.getVhost() << "/"
<< sender.getApp() << "/" << sender.getId() << " " << force;
weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
getPoller()->async([weak_self, err]() {
auto strong_self = weak_self.lock();
if (strong_self) {
strong_self->onShutdown(SockException(Err_shutdown, err));
// 主动关闭推流,那么不延时注销
strong_self->_muxer = nullptr;
}
});
return true;
}
// 播放总人数
int SrtTransportImp::totalReaderCount(mediakit::MediaSource &sender) {
return _muxer ? _muxer->totalReaderCount() : sender.readerCount();
}
// 获取媒体源类型
mediakit::MediaOriginType SrtTransportImp::getOriginType(mediakit::MediaSource &sender) const {
return MediaOriginType::srt_push;
}
// 获取媒体源url或者文件路径
std::string SrtTransportImp::getOriginUrl(mediakit::MediaSource &sender) const {
return _media_info._full_url;
}
// 获取媒体源客户端相关信息
std::shared_ptr<SockInfo> SrtTransportImp::getOriginSock(mediakit::MediaSource &sender) const {
return static_pointer_cast<SockInfo>(getSession());
}
void SrtTransportImp::emitOnPublish() {
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
Broadcast::PublishAuthInvoker invoker = [weak_self](const std::string &err, const ProtocolOption &option) {
auto strong_self = weak_self.lock();
if (!strong_self) {
return;
}
if (err.empty()) {
strong_self->_muxer = std::make_shared<MultiMediaSourceMuxer>(
strong_self->_media_info._vhost, strong_self->_media_info._app, strong_self->_media_info._streamid,
0.0f, option);
strong_self->_muxer->setMediaListener(strong_self);
strong_self->doCachedFunc();
InfoP(strong_self) << "允许 srt 推流";
} else {
WarnP(strong_self) << "禁止 srt 推流:" << err;
strong_self->onShutdown(SockException(Err_refused, err));
}
};
// 触发推流鉴权事件
auto flag = NoticeCenter::Instance().emitEvent(
Broadcast::kBroadcastMediaPublish, MediaOriginType::srt_push, _media_info, invoker,
static_cast<SockInfo &>(*this));
if (!flag) {
// 该事件无人监听,默认不鉴权
invoker("", ProtocolOption());
}
}
void SrtTransportImp::emitOnPlay() {
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
Broadcast::AuthInvoker invoker = [weak_self](const string &err) {
auto strong_self = weak_self.lock();
if (!strong_self) {
return;
}
strong_self->getPoller()->async([strong_self, err] {
if (err != "") {
strong_self->onShutdown(SockException(Err_refused, err));
} else {
strong_self->doPlay();
}
});
};
auto flag = NoticeCenter::Instance().emitEvent(
Broadcast::kBroadcastMediaPlayed, _media_info, invoker, static_cast<SockInfo &>(*this));
if (!flag) {
doPlay();
}
}
void SrtTransportImp::doPlay() {
// 异步查找直播流
MediaInfo info = _media_info;
info._schema = TS_SCHEMA;
std::weak_ptr<SrtTransportImp> weak_self = static_pointer_cast<SrtTransportImp>(shared_from_this());
MediaSource::findAsync(info, getSession(), [weak_self](const MediaSource::Ptr &src) {
auto strong_self = weak_self.lock();
if (!strong_self) {
// 本对象已经销毁
TraceL << "本对象已经销毁";
return;
}
if (!src) {
// 未找到该流
TraceL << "未找到该流";
strong_self->onShutdown(SockException(Err_shutdown));
} else {
TraceL << "找到该流";
auto ts_src = dynamic_pointer_cast<TSMediaSource>(src);
assert(ts_src);
ts_src->pause(false);
strong_self->_ts_reader = ts_src->getRing()->attach(strong_self->getPoller());
strong_self->_ts_reader->setDetachCB([weak_self]() {
auto strong_self = weak_self.lock();
if (!strong_self) {
// 本对象已经销毁
return;
}
strong_self->onShutdown(SockException(Err_shutdown));
});
strong_self->_ts_reader->setReadCB([weak_self](const TSMediaSource::RingDataType &ts_list) {
auto strong_self = weak_self.lock();
if (!strong_self) {
// 本对象已经销毁
return;
}
size_t i = 0;
auto size = ts_list->size();
ts_list->for_each([&](const TSPacket::Ptr &ts) { strong_self->onSendTSData(ts, ++i == size); });
});
}
});
}
std::string SrtTransportImp::get_peer_ip() {
if (!_addr) {
return "::";
}
return SockUtil::inet_ntoa((sockaddr *)_addr.get());
}
uint16_t SrtTransportImp::get_peer_port() {
if (!_addr) {
return 0;
}
return SockUtil::inet_port((sockaddr *)_addr.get());
}
std::string SrtTransportImp::get_local_ip() {
auto s = getSession();
if (s) {
return s->get_local_ip();
}
return "::";
}
uint16_t SrtTransportImp::get_local_port() {
auto s = getSession();
if (s) {
return s->get_local_port();
}
return 0;
}
std::string SrtTransportImp::getIdentifier() const {
return _media_info._streamid;
}
bool SrtTransportImp::inputFrame(const Frame::Ptr &frame) {
if (_muxer) {
return _muxer->inputFrame(frame);
}
if (_cached_func.size() > 200) {
WarnL << "cached frame of track(" << frame->getCodecName() << ") is too much, now dropped";
return false;
}
auto frame_cached = Frame::getCacheAbleFrame(frame);
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this, frame_cached]() { _muxer->inputFrame(frame_cached); });
return true;
}
bool SrtTransportImp::addTrack(const Track::Ptr &track) {
if (_muxer) {
return _muxer->addTrack(track);
}
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this, track]() { _muxer->addTrack(track); });
return true;
}
void SrtTransportImp::addTrackCompleted() {
if (_muxer) {
_muxer->addTrackCompleted();
} else {
lock_guard<recursive_mutex> lck(_func_mtx);
_cached_func.emplace_back([this]() { _muxer->addTrackCompleted(); });
}
}
void SrtTransportImp::doCachedFunc() {
lock_guard<recursive_mutex> lck(_func_mtx);
for (auto &func : _cached_func) {
func();
}
_cached_func.clear();
}
int SrtTransportImp::getLatencyMul() {
GET_CONFIG(int, latencyMul, kLatencyMul);
return latencyMul;
}
} // namespace SRT