uastatefactory.cxx

SIP（Session Initiation Protocol）是由IETF定义

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
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 * 
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
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 * 4. Products derived from this software may not be called "VOCAL", nor
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 *    permission of Vovida Networks, Inc.
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static const char* const UaStateFactory_cxx_Version = 
"$Id: UaStateFactory.cxx,v 1.4 2002/09/17 03:09:04 veer Exp $";

#include "UaStateFactory.hxx"
#include "UaStateIdle.hxx"
#include "UaStateEnd.hxx"
#include "UaStateFailure.hxx"
#include "UaStateInCall.hxx"
#include "UaStateRinging.hxx"
#include "UasStateTrying.hxx"
#include "UacStateTrying.hxx"
#include "UaStateRedirect.hxx"
#include "LockHelper.hxx"
#include "UaStateInHold.hxx"

using namespace Vocal;
using namespace UA;


UaStateFactory* UaStateFactory::myInstance = 0;
VMutex UaStateFactory::myMutex;


UaStateFactory& 
UaStateFactory::instance()
{
    if(myInstance == 0)
    {
        myInstance = new UaStateFactory();
    }
    return *myInstance;
}

void
UaStateFactory::destroy()
{
    delete UaStateFactory::myInstance;
    UaStateFactory::myInstance = 0;
    
}

UaState* 
UaStateFactory::getState(UStateType stateType)
{
    UaState* retVal;

    myMutex.lock();
    pthread_t tId = pthread_self();
    UaStateMap& tMap = myUaStateMap[tId];
    myMutex.unlock();

    UaStateMap::iterator itr  = tMap.find(stateType);
    if(itr != tMap.end())
    {
        return itr->second;
    }
    switch(stateType)
    {
        case U_STATE_IDLE:
           retVal = new UaStateIdle();
        break;
        case U_STATE_S_TRYING:
           retVal = new UasStateTrying();
        break;
        case U_STATE_C_TRYING:
           retVal = new UacStateTrying();
        break;
        case U_STATE_RINGING:
           retVal = new UaStateRinging();
        break;
        case U_STATE_FAILURE:
           retVal = new UaStateFailure();
        break;
        case U_STATE_INCALL:
           retVal = new UaStateInCall();
        break;
        case U_STATE_END:
           retVal = new UaStateEnd();
        break;
        case U_STATE_REDIRECT:
           retVal = new UaStateRedirect();
	break;
        case U_STATE_HOLD:
	    retVal = new UaStateInHold();
	break;
        default:
            cpLog(LOG_WARNING, "Unsupported state" );
            assert(0); 
        break;
    }
    tMap[stateType] = retVal;
    return retVal;
}

UaStateFactory::~UaStateFactory()
{
    for(ThreadBasedUaStateMap::iterator itr = myUaStateMap.begin();
               itr != myUaStateMap.end(); itr++)
    {
        UaStateMap& tMap = itr->second;
        for(UaStateMap::iterator itr2 = tMap.begin();
               itr2 != tMap.end(); itr2++)
        {
            delete (itr2->second);
        }
        tMap.erase(tMap.begin(), tMap.end());
    }
}