callcontrol.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * The Vovida Software License, Version 1.0 
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 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
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 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
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static const char* const CallControl_cxx_Version =
    "$Id: CallControl.cxx,v 1.4 2002/12/20 23:57:47 sprajpat Exp $";


#include "SipEvent.hxx" 
#include "CallTimerEvent.hxx" 
#include "CallDB.hxx" 
#include "CallControl.hxx" 

using namespace Vocal;
using namespace UA;

bool 
CallControl::processEvent(const Sptr<SipProxyEvent>& event)
{
    cpLog(LOG_DEBUG, "CallControl::processEvent");
    bool eventHandled = false;
    //Lets handle the sip-event here, other custom events can 
    //be handled in the detived classes
    Sptr<SipEvent> sipEvent;
    sipEvent.dynamicCast(event);
    if(sipEvent != 0)
    {
        cpLog(LOG_DEBUG, "Handling SIP event");
        //get the callleg and lookup in the Call database to
        //see if callleg already exists.If so get the UserAgent and
        //invoke the action on it.
        Sptr<SipMsg> sipMsg = sipEvent->getSipMsg();
        assert(sipMsg != 0);
        SipCallLeg cLeg(sipMsg->getFrom(), sipMsg->getTo(), sipMsg->getCallId());
        Sptr<MultiLegCallData> mData = CallDB::instance().getMultiLegCallData(cLeg);    if(mData != 0)
        {
            //Call Data found
            Sptr<UaBase> agent;
            agent.dynamicCast(mData->getCallLeg(cLeg));
            if(agent != 0)
                agent->receivedMsg(sipMsg);
            eventHandled = true;
        }
    }
    cpLog(LOG_DEBUG, "CallControl::processEvent returns");
    return eventHandled;
}


CallControl::~CallControl()
{
    myShutdownFlag = true;
    myFriedFifo.add(0);
    myCleanupThread.join();
}

CallControl::CallControl()
    : myShutdownFlag(false)
{
    myCleanupThread.spawn(CallControl::cleanupThread, this);
}

void*
CallControl::cleanupThread(void* args)
{
    CallControl* self = static_cast<CallControl*>(args);
    while(1)
    {
        unsigned long id = self->myFriedFifo.getNext();
        if(self->myShutdownFlag) break;
        self->myMutex.lock();
        CallMap::iterator itr = self->myCallMap.find(id);
        if(itr != self->myCallMap.end())
        {
            cpLog(LOG_DEBUG,  "Removing id:%d ",id);
            self->myCallMap.erase(id);
        } 
        self->myMutex.unlock();
    }
    return 0;
}


void 
CallControl::removeAgent(unsigned long id, int ms)
{
    myFriedFifo.addDelayMs(id, ms);
}