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RTP rework: added sorter class, updated RTSP input/output/analyser to be compatible with it

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This commit is contained in:
Thulinma 2018-06-08 16:39:39 +02:00
parent f926ceab0d
commit e3886c8acf
9 changed files with 116 additions and 127 deletions
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61
src/output/output_rtsp.cpp
View file

@ -14,8 +14,9 @@ namespace Mist{
Socket::Connection *mainConn = 0;
OutRTSP *classPointer = 0;
/// Helper function for passing packets into the OutRTSP class
/// Helper functions for passing packets into the OutRTSP class
void insertPacket(const DTSC::Packet &pkt){classPointer->incomingPacket(pkt);}
void insertRTP(const uint64_t track, const RTP::Packet &p){classPointer->incomingRTP(track, p);}
/// Takes incoming packets and buffers them.
void OutRTSP::incomingPacket(const DTSC::Packet &pkt){
@ -37,6 +38,7 @@ namespace Mist{
bufferLivePacket(newPkt);
//bufferLivePacket(DTSC::RetimedPacket(pkt.getTime() + packetOffset, pkt));
}
void OutRTSP::incomingRTP(const uint64_t track, const RTP::Packet &p){sdpState.handleIncomingRTP(track, p);}
OutRTSP::OutRTSP(Socket::Connection &myConn) : Output(myConn){
connectedAt = Util::epoch() + 2208988800ll;
@ -410,8 +412,8 @@ namespace Mist{
uint32_t trackNo = sdpState.getTrackNoForChannel(tcpHead.data()[1]);
if (trackNo && isPushing()){
RTP::Packet pkt(tcpPacket.data() + 4, len);
sdpState.tracks[trackNo].rtpSeq = pkt.getSequence();
sdpState.handleIncomingRTP(trackNo, pkt);
sdpState.tracks[trackNo].sorter.rtpSeq = pkt.getSequence();
incomingRTP(trackNo, pkt);
}
// attempt to read more packets
return handleTCP();
@ -423,6 +425,7 @@ namespace Mist{
for (std::map<uint32_t, SDP::Track>::iterator it = sdpState.tracks.begin();
it != sdpState.tracks.end(); ++it){
Socket::UDPConnection &s = it->second.data;
it->second.sorter.setCallback(it->first, insertRTP);
while (s.Receive()){
if (s.getDestPort() != it->second.cPortA && checkPort){
// wrong sending port, ignore packet
@ -431,56 +434,10 @@ namespace Mist{
lastRecv = Util::epoch(); // prevent disconnect of idle TCP connection when using UDP
myConn.addDown(s.data_len);
RTP::Packet pack(s.data, s.data_len);
if (!it->second.rtpSeq){it->second.rtpSeq = pack.getSequence();}
// packet is very early - assume dropped after 30 packets
while ((int16_t)(((uint16_t)it->second.rtpSeq) - ((uint16_t)pack.getSequence())) < -30){
WARN_MSG("Giving up on packet %u", it->second.rtpSeq);
++(it->second.rtpSeq);
++(it->second.lostTotal);
++(it->second.lostCurrent);
++(it->second.packTotal);
++(it->second.packCurrent);
// send any buffered packets we may have
while (it->second.packBuffer.count(it->second.rtpSeq)){
sdpState.handleIncomingRTP(it->first, pack);
++(it->second.rtpSeq);
++(it->second.packTotal);
++(it->second.packCurrent);
}
}
// send any buffered packets we may have
while (it->second.packBuffer.count(it->second.rtpSeq)){
sdpState.handleIncomingRTP(it->first, pack);
++(it->second.rtpSeq);
++(it->second.packTotal);
++(it->second.packCurrent);
}
// packet is slightly early - buffer it
if (((int16_t)(((uint16_t)it->second.rtpSeq) - ((uint16_t)pack.getSequence())) < 0)){
INFO_MSG("Buffering early packet #%u->%u", it->second.rtpSeq, pack.getSequence());
it->second.packBuffer[pack.getSequence()] = pack;
}
// packet is late
if ((int16_t)(((uint16_t)it->second.rtpSeq) - ((uint16_t)pack.getSequence())) > 0){
// negative difference?
--(it->second.lostTotal);
--(it->second.lostCurrent);
++(it->second.packTotal);
++(it->second.packCurrent);
WARN_MSG("Dropped a packet that arrived too late! (%d packets difference)",
(int16_t)(((uint16_t)it->second.rtpSeq) - ((uint16_t)pack.getSequence())));
return;
}
// packet is in order
if (it->second.rtpSeq == pack.getSequence()){
sdpState.handleIncomingRTP(it->first, pack);
++(it->second.rtpSeq);
++(it->second.packTotal);
++(it->second.packCurrent);
if (!it->second.theirSSRC){
it->second.theirSSRC = pack.getSSRC();
}
if (!it->second.theirSSRC){
it->second.theirSSRC = pack.getSSRC();
}
it->second.sorter.addPacket(pack);
}
if (Util::epoch() / 5 != it->second.rtcpSent){
it->second.rtcpSent = Util::epoch() / 5;

1
src/output/output_rtsp.h
View file

@ -17,6 +17,7 @@ namespace Mist{
void requestHandler();
bool onFinish();
void incomingPacket(const DTSC::Packet &pkt);
void incomingRTP(const uint64_t track, const RTP::Packet &p);
private:
long long connectedAt; ///< The timestamp the connection was made, as reference point for RTCP