Esempio n. 1
0
SInt64 RTCPTask::Run()
{
    const UInt32 kMaxRTCPPacketSize = 2048;
    char thePacketBuffer[kMaxRTCPPacketSize];
    StrPtrLen thePacket(thePacketBuffer, 0);
    QTSServerInterface* theServer = QTSServerInterface::GetServer();
    
    //This task goes through all the UDPSockets in the RTPSocketPool, checking to see
    //if they have data. If they do, it demuxes the packets and sends the packet onto
    //the proper RTP session.
    EventFlags events = this->GetEvents(); // get and clear events
    
    if ( (events & Task::kReadEvent) || (events & Task::kIdleEvent) )
        {
                //Must be done atomically wrt the socket pool.
                
                OSMutexLocker locker(theServer->GetSocketPool()->GetMutex());
                for (OSQueueIter iter(theServer->GetSocketPool()->GetSocketQueue());
                                !iter.IsDone(); iter.Next())
                {
                        UInt32 theRemoteAddr = 0;
                        UInt16 theRemotePort = 0;
        
                        UDPSocketPair* thePair = (UDPSocketPair*)iter.GetCurrent()->GetEnclosingObject();
                        Assert(thePair != NULL);
                        
                        for (UInt32 x = 0; x < 2; x++)
                        {
                                UDPSocket* theSocket = NULL;
                                if (x == 0)
                                        theSocket = thePair->GetSocketA();
                                else
                                        theSocket = thePair->GetSocketB();
                                        
                                UDPDemuxer* theDemuxer = theSocket->GetDemuxer();
                        if (theDemuxer == NULL) 
                            continue;
                        else
                        {
                                        theDemuxer->GetMutex()->Lock();
                            while (true) //get all the outstanding packets for this socket
                                {
                                        thePacket.Len = 0;
                                        theSocket->RecvFrom(&theRemoteAddr, &theRemotePort, thePacket.Ptr,  
                                                                        kMaxRTCPPacketSize, &thePacket.Len);
                                        if (thePacket.Len == 0)
                                        {
                                                theSocket->RequestEvent(EV_RE);   
                                                break;//no more packets on this socket!
                                        }
                                        
                                        //if this socket has a demuxer, find the target RTPStream
                                        if (theDemuxer != NULL)
                                        {
                                                RTPStream* theStream = (RTPStream*)theDemuxer->GetTask(theRemoteAddr, theRemotePort);
                                                if (theStream != NULL)
                                                        theStream->ProcessIncomingRTCPPacket(&thePacket);
                                        }
                                }
                                        theDemuxer->GetMutex()->Unlock();
                        }
                }
        }
    }
     
    return 0; /* Fix for 4004432 */   
    /*
    SInt64 result = 0;
    if (theServer->GetNumRTPSessions() > 0)
        result =  theServer->GetPrefs()->GetRTCPPollIntervalInMsec();
    
   return result;
   */
}