rtpeventreceiver.cpp

symbian平台S60_2nd_FP2_SC rtp实现

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#include "RtpEventReceiver.h"
#include "RtpPacket.h"
#include "cpLog.h"


RtpEventReceiver::RtpEventReceiver()
{
    _DTMFInterface = 0;
    _keyEvent = KeyEventNULL;
    _DTMFEvent = DTMFEventNULL;
    return;
}


RtpEventReceiver::~RtpEventReceiver()

{
    return;
}


bool RtpEventReceiver::recvEvent( RtpPacket* p )
{/*
    if( _DTMFInterface == 0 )
        return;
*/
    switch( p->getPayloadType() )
    {
        case( rtpPayloadDTMF_RFC2833 ):
            if(recvEventRFC2833( p )==true)
             return true;
            break;
        case( rtpPayloadCiscoRtp ):
            recvEventCiscoRTP( p );
            break;
        default:
            cpLog(LOG_ERR, "Unknown rtp payload event");
            return false;
    }

    return false;
}


bool RtpEventReceiver::recvEventRFC2833( RtpPacket* p )
{
    assert(p->getPayloadType() == rtpPayloadDTMF_RFC2833);

    if(p->getPayloadUsage() == 0)
       return false;
    assert(p->getHeader() != 0);
    RtpEventDTMFRFC2833* e = reinterpret_cast<RtpEventDTMFRFC2833*> (p->getPayloadLoc());
    assert(e != NULL);
    if( e->edge == 0)
    {
        if( _keyEvent == KeyEventOn )
        {
            // off detection
            cpLog(LOG_DEBUG_STACK, "DTMF off detected: %d", _DTMFEvent);
          //  sendToDTMFInterface ( _DTMFEvent, e->duration );
            _keyEvent = KeyEventNULL;
        }
    }
    if (e->edge == 1) //tutu
    {
		if (_keyEvent ==KeyEventOn)
		{
			// on detection
			_keyEvent = KeyEventOn;
			_DTMFEvent = DTMFToEvent( e->event );
			return true;
		}

		if (_keyEvent ==KeyEventNULL)
		{
			// on detection
			_keyEvent = KeyEventOn;
			_DTMFEvent = DTMFToEvent( e->event );
			return true;
		}
	}

	return false;
}
void RtpEventReceiver::recvEventCiscoRTP( RtpPacket* p )
{
    assert(p->getPayloadType() == rtpPayloadCiscoRtp);

    RtpEventDTMFCiscoRtp* e = reinterpret_cast<RtpEventDTMFCiscoRtp*>
                              (p->getPayloadLoc());

    if( _keyEvent != KeyEventOn && e->digitType == 1 )
    {
        // on detection
        _keyEvent = KeyEventOn;
        _DTMFEvent = DTMFToEvent(e->digitCode);
        cpLog(LOG_DEBUG_STACK, "DTMF on detected: %d", _DTMFEvent);
    }
    else if( _keyEvent == KeyEventOn && e->digitType == 0 && e->edge == 0 )
    {
        // off detection
        cpLog(LOG_DEBUG_STACK, "DTMF off detected: %d", _DTMFEvent);
        sendToDTMFInterface( _DTMFEvent, 20 );
        _keyEvent = KeyEventNULL;
    }

    return;
}


void RtpEventReceiver::sendToDTMFInterface( const DTMFEvent e, 
					    unsigned int duration )
{
    if( _DTMFInterface != 0 )
    {
        cpLog(LOG_DEBUG_STACK, "Sending event %d to DTMFInterface", e);
        _DTMFInterface->sendDTMF( e, duration );
    }
    return ;
}


DTMFEvent RtpEventReceiver::DTMFToEvent( int event )
{
    DTMFEvent result;

    switch( event )
    {
        case 0:
        result = DTMFEventDigit0;
        break;
        case 1:
        result = DTMFEventDigit1;
        break;
        case 2:
        result = DTMFEventDigit2;
        break;
        case 3:
        result = DTMFEventDigit3;
        break;
        case 4:
        result = DTMFEventDigit4;
        break;
        case 5:
        result = DTMFEventDigit5;
        break;
        case 6:
        result = DTMFEventDigit6;
        break;
        case 7:
        result = DTMFEventDigit7;
        break;
        case 8:
        result = DTMFEventDigit8;
        break;
        case 9:
        result = DTMFEventDigit9;
        break;
        case 10:
        result = DTMFEventDigitStar;
        break;
        case 11:
        result = DTMFEventDigitHash;
        break;
        default:
        cpLog(LOG_ERR, "Unknown DTMF event during conversion");
        result = DTMFEventNULL;
    }
    return result;
}