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rtc推流和播放添加事件触发

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This commit is contained in:
xiongziliang 2021-04-04 23:20:10 +08:00
parent 49d8e2f825
commit fe02f2cf1c
3 changed files with 155 additions and 75 deletions
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90
server/WebApi.cpp
View File

@ -1082,19 +1082,87 @@ void installWebApi() {
#ifdef ENABLE_WEBRTC
static list<WebRtcTransportImp::Ptr> rtcs;
api_regist("/index/api/webrtc",[](API_ARGS_STRING){
api_regist("/index/api/webrtc",[](API_ARGS_STRING_ASYNC){
CHECK_ARGS("app", "stream");
auto src = dynamic_pointer_cast<RtspMediaSource>(MediaSource::find(RTSP_SCHEMA, DEFAULT_VHOST, allArgs.getUrlArgs()["app"], allArgs.getUrlArgs()["stream"]));
if (!src) {
throw ApiRetException("流不存在", API::NotFound);
}
headerOut["Content-Type"] = "text/plain";
auto offer_sdp = allArgs.Content();
auto type = allArgs.getUrlArgs()["type"];
MediaInfo info(StrPrinter << "rtc://" << headerIn["Host"] << "/" << allArgs.getUrlArgs()["app"] << "/" << allArgs.getUrlArgs()["stream"] << "?" << allArgs.Params());
//设置返回类型
headerOut["Content-Type"] = HttpFileManager::getContentType(".json");
//设置跨域
headerOut["Access-Control-Allow-Origin"] = "*";
auto rtc = WebRtcTransportImp::create(EventPollerPool::Instance().getPoller());
rtc->attach(src);
val["sdp"] = rtc->getAnswerSdp(allArgs.Content());
val["type"] = "answer";
rtcs.emplace_back(rtc);
if (type.empty() || !strcasecmp(type.data(), "play")) {
Broadcast::AuthInvoker authInvoker = [invoker, offer_sdp, val, info, headerOut](const string &err) mutable {
try {
auto src = dynamic_pointer_cast<RtspMediaSource>(MediaSource::find(RTSP_SCHEMA, info._vhost, info._app, info._streamid));
if (!src) {
throw runtime_error("流不存在");
}
if (!err.empty()) {
throw runtime_error(StrPrinter << "播放鉴权失败:" << err);
}
auto rtc = WebRtcTransportImp::create(EventPollerPool::Instance().getPoller());
rtc->attach(src);
val["sdp"] = rtc->getAnswerSdp(offer_sdp);
val["type"] = "answer";
rtcs.emplace_back(rtc);
invoker(200, headerOut, val.toStyledString());
} catch (std::exception &ex) {
val["code"] = API::Exception;
val["msg"] = ex.what();
invoker(200, headerOut, val.toStyledString());
}
};
//广播通用播放url鉴权事件
auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPlayed, info, authInvoker, sender);
if (!flag) {
//该事件无人监听,默认不鉴权
authInvoker("");
}
return;
}
if (!strcasecmp(type.data(), "push")) {
Broadcast::PublishAuthInvoker authInvoker = [invoker, offer_sdp, val, info, headerOut](const string &err, bool enableHls, bool enableMP4) mutable {
try {
auto src = dynamic_pointer_cast<RtspMediaSource>(MediaSource::find(RTSP_SCHEMA, info._vhost, info._app, info._streamid));
if (src) {
throw std::runtime_error("已经在推流");
}
if (!err.empty()) {
throw runtime_error(StrPrinter << "推流鉴权失败:" << err);
}
auto push_src = std::make_shared<RtspMediaSourceImp>(info._vhost, info._app, info._streamid);
push_src->setProtocolTranslation(enableHls, enableMP4);
auto rtc = WebRtcTransportImp::create(EventPollerPool::Instance().getPoller());
rtc->attach(push_src);
val["sdp"] = rtc->getAnswerSdp(offer_sdp);
val["type"] = "answer";
rtcs.emplace_back(rtc);
invoker(200, headerOut, val.toStyledString());
} catch (std::exception &ex) {
val["code"] = API::Exception;
val["msg"] = ex.what();
invoker(200, headerOut, val.toStyledString());
}
};
//rtsp推流需要鉴权
auto flag = NoticeCenter::Instance().emitEvent(Broadcast::kBroadcastMediaPublish, info, authInvoker, sender);
if (!flag) {
//该事件无人监听,默认不鉴权
GET_CONFIG(bool, toHls, General::kPublishToHls);
GET_CONFIG(bool, toMP4, General::kPublishToMP4);
authInvoker("", toHls, toMP4);
}
return;
}
throw ApiRetException("不支持该类型", API::InvalidArgs);
});
#endif

118
webrtc/WebRtcTransport.cpp
View File

@ -6,10 +6,10 @@
#define RTP_CNAME "zlmediakit-rtp"
#define RTX_CNAME "zlmediakit-rtx"
WebRtcTransport::WebRtcTransport(const EventPoller::Ptr &poller) {
_poller = poller;
_dtls_transport = std::make_shared<RTC::DtlsTransport>(poller, this);
_ice_server = std::make_shared<RTC::IceServer>(this, makeRandStr(4), makeRandStr(24));
_ice_server = std::make_shared<RTC::IceServer>(this, makeRandStr(4), makeRandStr(28).substr(4));
}
void WebRtcTransport::onDestory(){
@ -17,6 +17,10 @@ void WebRtcTransport::onDestory(){
_ice_server = nullptr;
}
const EventPoller::Ptr& WebRtcTransport::getPoller() const{
return _poller;
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
void WebRtcTransport::OnIceServerSendStunPacket(const RTC::IceServer *iceServer, const RTC::StunPacket *packet, RTC::TransportTuple *tuple) {
@ -127,10 +131,7 @@ std::string WebRtcTransport::getAnswerSdp(const string &offer){
//// 生成answer sdp ////
_answer_sdp = configure.createAnswer(*_offer_sdp);
onCheckSdp(SdpType::answer, *_answer_sdp);
auto str = _answer_sdp->toString();
TraceL << "\r\n" << str;
return str;
return _answer_sdp->toString();
}
bool is_dtls(char *buf) {
@ -247,35 +248,33 @@ bool WebRtcTransportImp::canRecvRtp() const{
}
void WebRtcTransportImp::onStartWebRTC() {
if (canRecvRtp()) {
_push_src = std::make_shared<RtspMediaSourceImp>(DEFAULT_VHOST, "live", "push");
auto rtsp_sdp = getSdp(SdpType::answer).toRtspSdp();
_push_src->setSdp(rtsp_sdp);
for (auto &m : getSdp(SdpType::offer).media) {
if (m.type == TrackVideo) {
_recv_video_ssrc = m.rtp_ssrc.ssrc;
}
for (auto &plan : m.plan) {
auto hit_pan = getSdp(SdpType::answer).getMedia(m.type)->getPlan(plan.pt);
if (!hit_pan) {
continue;
}
//获取offer端rtp的ssrc和pt相关信息
auto &ref = _rtp_receiver[plan.pt];
_ssrc_info[m.rtp_ssrc.ssrc] = &ref;
ref.plan = &plan;
ref.media = &m;
ref.is_common_rtp = getCodecId(plan.codec) != CodecInvalid;
ref.rtcp_context_recv = std::make_shared<RtcpContext>(ref.plan->sample_rate, true);
ref.rtcp_context_send = std::make_shared<RtcpContext>(ref.plan->sample_rate, false);
ref.receiver = std::make_shared<RtpReceiverImp>([&ref, this](RtpPacket::Ptr rtp) {
onSortedRtp(ref, std::move(rtp));
}, [ref, this](const RtpPacket::Ptr &rtp) {
onBeforeSortedRtp(ref, rtp);
});
}
for (auto &m : getSdp(SdpType::offer).media) {
if (m.type == TrackVideo) {
_recv_video_ssrc = m.rtp_ssrc.ssrc;
}
for (auto &plan : m.plan) {
auto hit_pan = getSdp(SdpType::answer).getMedia(m.type)->getPlan(plan.pt);
if (!hit_pan) {
continue;
}
//获取offer端rtp的ssrc和pt相关信息
auto &ref = _rtp_info_pt[plan.pt];
_rtp_info_ssrc[m.rtp_ssrc.ssrc] = &ref;
ref.plan = &plan;
ref.media = &m;
ref.is_common_rtp = getCodecId(plan.codec) != CodecInvalid;
ref.rtcp_context_recv = std::make_shared<RtcpContext>(ref.plan->sample_rate, true);
ref.rtcp_context_send = std::make_shared<RtcpContext>(ref.plan->sample_rate, false);
ref.receiver = std::make_shared<RtpReceiverImp>([&ref, this](RtpPacket::Ptr rtp) {
onSortedRtp(ref, std::move(rtp));
}, [ref, this](const RtpPacket::Ptr &rtp) {
onBeforeSortedRtp(ref, rtp);
});
}
}
if (canRecvRtp()) {
_src->setSdp(getSdp(SdpType::answer).toRtspSdp());
}
if (canSendRtp()) {
_reader = _src->getRing()->attach(_socket->getPoller(), true);
@ -320,22 +319,31 @@ void WebRtcTransportImp::onCheckSdp(SdpType type, RtcSession &sdp) const{
void WebRtcTransportImp::onRtcConfigure(RtcConfigure &configure) const {
WebRtcTransport::onRtcConfigure(configure);
_rtsp_send_sdp.loadFrom(_src->getSdp(), false);
//根据rtsp流的相关信息，设置rtc最佳编码
for (auto &m : _rtsp_send_sdp.media) {
switch (m.type) {
case TrackVideo: {
configure.video.preferred_codec.insert(configure.video.preferred_codec.begin(), getCodecId(m.plan[0].codec));
break;
if (!_src->getSdp().empty()) {
//这是播放
configure.video.direction = RtpDirection::sendonly;
configure.audio.direction = RtpDirection::sendonly;
_rtsp_send_sdp.loadFrom(_src->getSdp(), false);
//根据rtsp流的相关信息，设置rtc最佳编码
for (auto &m : _rtsp_send_sdp.media) {
switch (m.type) {
case TrackVideo: {
configure.video.preferred_codec.insert(configure.video.preferred_codec.begin(), getCodecId(m.plan[0].codec));
break;
}
case TrackAudio: {
configure.audio.preferred_codec.insert(configure.audio.preferred_codec.begin(),getCodecId(m.plan[0].codec));
break;
}
default:
break;
}
case TrackAudio: {
configure.audio.preferred_codec.insert(configure.audio.preferred_codec.begin(),getCodecId(m.plan[0].codec));
break;
}
default:
break;
}
} else {
//这是推流
configure.video.direction = RtpDirection::recvonly;
configure.audio.direction = RtpDirection::recvonly;
}
//添加接收端口candidate信息
@ -395,8 +403,8 @@ void WebRtcTransportImp::onRtcp(const char *buf, size_t len) {
case RtcpType::RTCP_SR : {
//对方汇报rtp发送情况
RtcpSR *sr = (RtcpSR *) rtcp;
auto it = _ssrc_info.find(sr->ssrc);
if (it != _ssrc_info.end()) {
auto it = _rtp_info_ssrc.find(sr->ssrc);
if (it != _rtp_info_ssrc.end()) {
it->second->rtcp_context_recv->onRtcp(sr);
auto rr = it->second->rtcp_context_recv->createRtcpRR(sr->items.ssrc, sr->ssrc);
sendRtcpPacket(rr->data(), rr->size(), true);
@ -407,8 +415,8 @@ void WebRtcTransportImp::onRtcp(const char *buf, size_t len) {
case RtcpType::RTCP_RR : {
//对方汇报rtp接收情况
RtcpRR *rr = (RtcpRR *) rtcp;
auto it = _ssrc_info.find(rr->ssrc);
if (it != _ssrc_info.end()) {
auto it = _rtp_info_ssrc.find(rr->ssrc);
if (it != _rtp_info_ssrc.end()) {
auto sr = it->second->rtcp_context_send->createRtcpSR(rr->items.ssrc);
sendRtcpPacket(sr->data(), sr->size(), true);
InfoL << "send rtcp sr";
@ -431,8 +439,8 @@ void WebRtcTransportImp::onRtcp(const char *buf, size_t len) {
void WebRtcTransportImp::onRtp(const char *buf, size_t len) {
RtpHeader *rtp = (RtpHeader *) buf;
//根据接收到的rtp的pt信息，找到该流的信息
auto it = _rtp_receiver.find(rtp->pt);
if (it == _rtp_receiver.end()) {
auto it = _rtp_info_pt.find(rtp->pt);
if (it == _rtp_info_pt.end()) {
WarnL;
return;
}
@ -458,7 +466,7 @@ void WebRtcTransportImp::onSortedRtp(const RtpPayloadInfo &info, RtpPacket::Ptr
sendRtcpPacket((char *) pli.get(), sizeof(RtcpPli), true);
InfoL << "send pli";
}
_push_src->onWrite(std::move(rtp), false);
_src->onWrite(std::move(rtp), false);
}
void WebRtcTransportImp::onBeforeSortedRtp(const RtpPayloadInfo &info, const RtpPacket::Ptr &rtp) {
@ -474,5 +482,5 @@ void WebRtcTransportImp::onSendRtp(const RtpPacket::Ptr &rtp, bool flush){
}
sendRtpPacket(rtp->data() + RtpPacket::kRtpTcpHeaderSize, rtp->size() - RtpPacket::kRtpTcpHeaderSize, flush, pt);
//统计rtp发送情况，好做sr汇报
_rtp_receiver[pt].rtcp_context_send->onRtp(rtp->getSeq(), rtp->getStampMS(), rtp->size() - RtpPacket::kRtpTcpHeaderSize);
_rtp_info_pt[pt].rtcp_context_send->onRtp(rtp->getSeq(), rtp->getStampMS(), rtp->size() - RtpPacket::kRtpTcpHeaderSize);
}

22
webrtc/WebRtcTransport.h
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@ -44,10 +44,14 @@ public:
* 发送rtp
* @param buf rtcp内容
* @param len rtcp长度
* @param flush 是否flush socket
* @param pt rtp payload type
*/
void sendRtpPacket(char *buf, size_t len, bool flush, uint8_t pt);
void sendRtcpPacket(char *buf, size_t len, bool flush);
const EventPoller::Ptr& getPoller() const;
protected:
//// dtls相关的回调 ////
void OnDtlsTransportConnecting(const RTC::DtlsTransport *dtlsTransport) override {};
@ -89,6 +93,7 @@ private:
void setRemoteDtlsFingerprint(const RtcSession &remote);
private:
EventPoller::Ptr _poller;
std::shared_ptr<RTC::IceServer> _ice_server;
std::shared_ptr<RTC::DtlsTransport> _dtls_transport;
std::shared_ptr<RTC::SrtpSession> _srtp_session_send;
@ -148,17 +153,16 @@ private:
void onBeforeSortedRtp(const RtpPayloadInfo &info,const RtpPacket::Ptr &rtp);
private:
Socket::Ptr _socket;
RtspMediaSource::Ptr _src;
RtspMediaSource::RingType::RingReader::Ptr _reader;
RtcSession _answer_sdp;
mutable RtcSession _rtsp_send_sdp;
mutable uint8_t _send_rtp_pt[2] = {0, 0};
RtspMediaSourceImp::Ptr _push_src;
unordered_map<uint8_t, RtpPayloadInfo> _rtp_receiver;
unordered_map<uint32_t, RtpPayloadInfo*> _ssrc_info;
uint32_t _recv_video_ssrc;
mutable uint8_t _send_rtp_pt[2] = {0, 0};
Ticker _pli_ticker;
Socket::Ptr _socket;
RtcSession _answer_sdp;
RtspMediaSource::Ptr _src;
mutable RtcSession _rtsp_send_sdp;
RtspMediaSource::RingType::RingReader::Ptr _reader;
unordered_map<uint8_t, RtpPayloadInfo> _rtp_info_pt;
unordered_map<uint32_t, RtpPayloadInfo*> _rtp_info_ssrc;
};