opconvertcw.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.
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 * 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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static const char* const OpConvertCw_cxx_Version =
    "$Id: OpConvertCw.cxx,v 1.12 2002/11/09 02:13:07 derekm Exp $";


#include "global.h"
#include <cpLog.h>
#include <InviteMsg.hxx>
#include <SipCSeq.hxx>

#include "OpConvertCw.hxx"
#include "UaDeviceEvent.hxx"
#include "UaCallInfo.hxx"
#include "UaStateMachine.hxx"
#include "UaDevice.hxx"
#include "UaConfiguration.hxx"
#include "UaCallContainer.hxx"


///
using namespace Vocal;


OpConvertCw::OpConvertCw()
{}


OpConvertCw::~OpConvertCw()
{}


///

const char* const
OpConvertCw::name() const
{
    return "OpConvertCw";
}


///
const Sptr < State >
OpConvertCw::process( const Sptr < SipProxyEvent > event )
{
    cpLog( LOG_DEBUG, "OpConvertCw operation" );

    Sptr < UaDeviceEvent > deviceEvent;
    deviceEvent.dynamicCast( event );
    if ( deviceEvent == 0 )
    {
        return 0;
    }

    if ( deviceEvent->type != DeviceEventFlash )
    {
        return 0;
    }

    Sptr < SipCallId > call2Id = UaDevice::instance()->getCallWaitingId();
    if ( call2Id == 0 )
    {
        // no call on call waiting
        return 0;
    }

    // if there is a call on call waiting, flashhook triggers ua to
    // put current call on hold and answer the call on call waiting
    if ( UaConfiguration::instance()->getCallWaitingOn() )
    {
        // send a message to the call on call waiting, notifying
        // it that the call has been picked up
        Sptr < UaCallContainer > calls;
        calls.dynamicCast( event->getCallContainer() );
        assert( calls != 0 );
        Sptr < UaCallInfo > call2 = calls->findCall( *call2Id );
        if ( call2 == 0 )
        {
            cpLog( LOG_ERR, "No call info found for the call on call waiting");
            cpLog( LOG_ERR, "Flash hook ignored" );
            return 0;
        }
        Sptr < Fifo < Sptr < SipProxyEvent > > > eventQ = deviceEvent->getFifo();
        Sptr < UaDeviceEvent > event = new UaDeviceEvent( eventQ );
        event->type = DeviceEventFlash;
        event->callId = call2Id;
        eventQ->add( event );

        // Remove call info from call container
        calls->deleteCall( *(UaDevice::instance()->getCallId()) );

        // Clear call id in device
        UaDevice::instance()->setCallId( 0 );
    }
    else
    {
        // if call waiting feature off, ignore flashhook
        // this should not happen since the second call can not
        // proceed this far if calling waiting feature is off
        return 0;
    }

    cpLog( LOG_DEBUG, "activate call on call waiting" );

    Sptr < UaStateMachine > stateMachine;
    stateMachine.dynamicCast( event->getCallInfo()->getFeature() );
    assert( stateMachine != 0 );

    return stateMachine->findState( "StateIdle" );
}