private void AddReceiverReports(CompoundPacket cp)
{
while(!cpComplete && receiverReports.Count > 0)
{
bool rrpComplete = false;
bool addedReport = false;
RrPacket rrp = new RrPacket();
rrp.SSRC = participant.SSRC;
// Remove the size of the header + ssrc
if(space >= rrp.Size)
{
space -= rrp.Size;
// Add the rest
while(space >= ReceiverReport.SIZE && receiverReports.Count > 0)
{
try
{
ReceiverReport rr = (ReceiverReport)receiverReports.Peek();
rrp.AddReceiverReport(rr);
receiverReports.Dequeue();
space -= ReceiverReport.SIZE;
addedReport = true;
}
catch(RtcpPacket.InsufficientItemSpaceException)
{
// No more room in rrp for reports
rrpComplete = true;
break;
}
}
}
// We broke out of the loop for one of 3 reasons
// 1. There were no more ReceiverReports
// 2. There was no more room in rrp
// 3. There was no more room in cp (cpComplete)
// If we added a report to rrp, add rrp to cp
if(addedReport)
{
int start = cp.Buffer.Length;
cp.AddPacket(rrp);
int end = cp.Buffer.Length;
Debug.Assert( (end - start) == rrp.Size ); // math check
}
// Figure out if we exited because cp is complete
if(receiverReports.Count > 0 && rrpComplete == false)
{
cpComplete = true;
}
}
}
private void ProcessRRPacket(RrPacket packet, IPAddress ipAddress)
{
AddSsrcToIp(packet.SSRC, ipAddress);
RtpParticipant senderParticipant = (RtpParticipant)ssrcToParticipant[packet.SSRC];
if (senderParticipant != null)
{
string senderCName = senderParticipant.CName;
foreach(ReceiverReport rr in packet.ReceiverReports)
{
RtpParticipant sourceParticipant = (RtpParticipant)ssrcToParticipant[rr.SSRC];
if (sourceParticipant != null)
{
string sourceCName = sourceParticipant.CName;
RaiseReceiverReportEvent(senderCName, sourceCName, rr);
}
}
}
}
private void AddEmptyReceiverReportPacket(CompoundPacket cp)
{
RrPacket rr = new RrPacket();
rr.SSRC = participant.SSRC;
int start = cp.Buffer.Length;
cp.AddPacket(rr);
int end = cp.Buffer.Length;
space -= rr.Size;
Debug.Assert( (end - start) == rr.Size ); // math check
}