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[Ccrtp-devel] Wrong Jitter, DLSR and Packet Loss values for received RTC


From: nishma4u1984
Subject: [Ccrtp-devel] Wrong Jitter, DLSR and Packet Loss values for received RTCP packets
Date: Thu, 21 Jun 2007 12:46:28 -0700

Hi,
I am trying to extract the jitter, delay and fraction of packet loss values 
from the received RTCP packets. I redefined the onGotSR and onGotRR packets for 
the same as below. But the values I am getting are wrong. Moreover both the 
values are not even same. I am using the ccrtp 1.5.1 version. Are there any 
bugs in the library for what I am trying to do? 
Thanks a lot.

// redefined from QueueRTCPManager
        void
        onGotSR(SyncSource& source, SendReport& SR, uint8 blocks)
        {
                RTPSession::onGotSR(source,SR,blocks);
                RTCPReceiverInfo RecInf(&(SR.blocks[0].rinfo));
                cout << dec
                     << "Source IP:Port: " << source.getNetworkAddress() << ":" 
                     << source.getControlTransportPort() << endl
                     << "Packet type: Sender Report" << endl
                     << "Delay: " << dec << SR.blocks[0].rinfo.dlsr << " : " 
                     << dec << RecInf.getDelayLastSR() << endl
                     << "Jitter: " << dec << SR.blocks[0].rinfo.jitter << " : "
                     << dec << RecInf.getJitter() << endl
                     << "Fraction Lost: " << dec << 
SR.blocks[0].rinfo.fractionLost << " : " 
                     << dec << RecInf.getFractionLost() << endl
                     << "Cumulative Packet Lost: " << dec << 
RecInf.getCumulativePacketLost()
                     << endl << endl;
        }

        // redefined from QueueRTCPManager
        void
        onGotRR(SyncSource& source, RecvReport& RR, uint8 blocks)
        {
                RTPSession::onGotRR(source,RR,blocks);
                RTCPReceiverInfo RecInf(&(RR.blocks[0].rinfo));
                cout << dec
                     << "Source IP:Port: " << source.getNetworkAddress() << ":" 
                     << source.getControlTransportPort() << endl
                     << "Packet type: Receiver Report" << endl
                     << "Delay: " << dec << RR.blocks[0].rinfo.dlsr << " : " 
                     << dec << RecInf.getDelayLastSR() << endl
                     << "Jitter: " << dec << RR.blocks[0].rinfo.jitter << " : "
                     << dec << RecInf.getJitter() << endl
                     << "Fraction Lost: " << dec << 
RR.blocks[0].rinfo.fractionLost << " : " 
                     << dec << RecInf.getFractionLost() << endl
                     << "Cumulative Packet Lost: " << dec << 
RecInf.getCumulativePacketLost()
                     << endl << endl;
        }




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