protected void RtcpPacketReceived(object sender, RtcpListener.RtcpPacketReceivedArgs e)
{
var locked = false;
var level = 0;
var quality = 0;
if (e.Packet is RtcpAppPacket)
{
RtcpAppPacket apppacket = (RtcpAppPacket)e.Packet;
var m = RegexDescribeResponseSignalInfo.Match(apppacket.Data);
if (m.Success)
{
locked = m.Groups[2].Captures[0].Value.Equals("1");
level = int.Parse(m.Groups[1].Captures[0].Value) * 100 / 255; // level: 0..255 => 0..100
quality = int.Parse(m.Groups[3].Captures[0].Value) * 100 / 15; // quality: 0..15 => 0..100
}
OnRecieptionInfoChanged(new RecieptionInfoArgs(locked, level, quality));
}
else if (e.Packet is RtcpByePacket)
{
TearDown();
}
}
private void RtcpListenerThread()
{
try
{
var receivedGoodBye = false;
try
{
//_udpClient.Client.ReceiveTimeout = 400;
var serverEndPoint = new IPEndPoint(IPAddress.Any, 0);
while (!receivedGoodBye && !_rtcpListenerThreadStopEvent.WaitOne(1))
{
var packets = _udpClient.Receive(ref serverEndPoint);
if (packets == null)
{
continue;
}
var offset = 0;
while (offset < packets.Length)
{
switch (packets[offset + 1])
{
case 200: //sr
var sr = new RtcpSenderReportPacket();
sr.Parse(packets, offset);
offset += sr.Length;
break;
case 201: //rr
var rr = new RtcpReceiverReportPacket();
rr.Parse(packets, offset);
offset += rr.Length;
break;
case 202: //sd
var sd = new RtcpSourceDescriptionPacket();
sd.Parse(packets, offset);
offset += sd.Length;
break;
case 203: // bye
var bye = new RtcpByePacket();
bye.Parse(packets, offset);
receivedGoodBye = true;
OnPacketReceived(new RtcpPacketReceivedArgs(bye));
offset += bye.Length;
break;
case 204: // app
var app = new RtcpAppPacket();
app.Parse(packets, offset);
OnPacketReceived(new RtcpPacketReceivedArgs(app));
offset += app.Length;
break;
}
}
}
}
finally
{
switch (_transmissionMode)
{
case TransmissionMode.Multicast:
_udpClient.DropMulticastGroup(_multicastEndPoint.Address);
_udpClient.Close();
break;
case TransmissionMode.Unicast:
_udpClient.Close();
break;
}
}
}
catch (ThreadAbortException)
{
}
catch (Exception ex)
{
Logger.Error("SAT>IP : RTCP listener thread exception", ex);
return;
}
Logger.Warn("SAT>IP : RTCP listener thread stopping");
}
