RTCP Control

Hi:
I'm lost with the use of RTCP. I'm trying to see the number of lost packets, 
the RTP Timestamp and the other items of a RTCP packet but i don't know how 
to do it. In my program I get SR packets in the receiver, but when I try to 
read the values, i think they're incorrect. I used a program based in 
audiotx.cpp and audiorx.cpp. I've tried to read the values using diferent 
ways, as it can be seen down, in the redefinition of onGotSR() function:

void onGotSR(SyncSource& source, SendReport& SR, uint8 blocks)
{
  RTPSession::onGotSR(source,SR,blocks);
  cout << "I got an SR RTCP report from "
       << hex << (int)source.getID() << "@"
       << dec
       << source.getNetworkAddress() << ":"
       << source.getControlTransportPort() << endl;
  RTCPSenderInfo SenInf(&(SR.sinfo));
  QueueRTCPManager::getMRSenderInfo(source);

  cout << "RTPTimestamp: " << dec << SenInf.getRTPTimestamp()<<endl;
  	cout << "RTPTimestamp: " << dec << SR.sinfo.RTPTimestamp <<endl;
  	cout << "Paquetes enviados: " << dec << SR.sinfo.packetCount <<endl;
	cout << "Paquetes enviados: " << dec << SenInf.getPacketCount() << endl;

	printf ("Fraction lost: %u\n", SR.blocks[0].rinfo.fractionLost);
	printf ("Jitter0: %u\n", SR.blocks[0].rinfo.jitter);
	RTCPReceiverInfo RecInf(&(SR.blocks[0].rinfo));
	printf ("Fraction lost: %u\n", RecInf.getFractionLost());
	printf ("CummulativePAcketLost: %u\n", RecInf.getCumulativePacketLost());
	printf ("Jitter0: %u\n", RecInf.getJitter());

}

Accesing by a RTCPSenderInfo object, the values are always the same in all 
the packets, and using the other way, i think that values are incorrect. 
Anybody can help me?
Thanks