ast_h323.cpp

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				cout << "-- Call to " << remoteName << " aborted, insufficient bandwidth." << endl;
			}
			break;
		case H323Connection::EndedByUnreachable:
			if (h323debug) {
				cout << "-- " << remoteName << " could not be reached." << endl;
			}
			break;
		case H323Connection::EndedByHostOffline:
			if (h323debug) {
				cout << "-- " << remoteName << " is not online." << endl;
			}
			break;
		case H323Connection::EndedByNoEndPoint:
			if (h323debug) {
				cout << "-- No phone running for " << remoteName << endl;
			}
			break;
		case H323Connection::EndedByConnectFail:
			if (h323debug) {
				cout << "-- Transport error calling " << remoteName << endl;
			}
			break;
		default:
			if (h323debug)
				cout << " -- Call with " << remoteName << " completed (" << connection.GetCallEndReason() << ")" << endl;

	}

	if (connection.IsEstablished()) {
		if (h323debug) {
			cout << "\t-- Call duration " << setprecision(0) << setw(5) << (PTime() - connection.GetConnectionStartTime()) << endl;
		}
	}	
	/* Invoke the PBX application registered callback */
	on_connection_cleared(connection.GetCallReference(), clearedCallToken);
	return;
}

H323Connection * MyH323EndPoint::CreateConnection(unsigned callReference, void *o)
{
	unsigned options = 0;
	call_options_t *opts = (call_options_t *)o;

	if (opts && opts->noFastStart) {
		options |= H323Connection::FastStartOptionDisable;
	} else {
		options |= H323Connection::FastStartOptionEnable;
	}
	if (opts && opts->noH245Tunneling) {
		options |= H323Connection::H245TunnelingOptionDisable;
	} else {
		options |= H323Connection::H245TunnelingOptionEnable;
	}
/* Disable until I can figure out the proper way to deal with this */
#if 0
	if (opts->noSilenceSuppression) {
		options |= H323Connection::SilenceSuppresionOptionDisable;
	} else {
		options |= H323Connection::SilenceSUppressionOptionEnable;
	}
#endif
	return new MyH323Connection(*this, callReference, options);
}

/* MyH323Connection Implementation */    
MyH323Connection::MyH323Connection(MyH323EndPoint & ep, unsigned callReference,
							unsigned options)
	: H323Connection(ep, callReference, options)
{
	cause = -1;
	if (h323debug) {
		cout << "	== New H.323 Connection created." << endl;
	}
	return;
}

MyH323Connection::~MyH323Connection()
{
	if (h323debug) {
		cout << "	== H.323 Connection deleted." << endl;
	}
	return;
}

BOOL MyH323Connection::OnReceivedProgress(const H323SignalPDU &pdu)
{
	BOOL isInband;
	unsigned pi;

	if (!H323Connection::OnReceivedProgress(pdu)) {
		return FALSE;
	}

	if (!pdu.GetQ931().GetProgressIndicator(pi))
		pi = 0;
	if (h323debug) {
		cout << "\t- Progress Indicator: " << pi << endl;
	}
	
	switch(pi) {
	case Q931::ProgressNotEndToEndISDN:
	case Q931::ProgressInbandInformationAvailable:
		isInband = TRUE;
		break;
	default:
		isInband = FALSE;
	}
	on_progress(GetCallReference(), (const char *)GetCallToken(), isInband);

	return connectionState != ShuttingDownConnection;
}

H323Connection::AnswerCallResponse MyH323Connection::OnAnswerCall(const PString & caller,
								  const H323SignalPDU & setupPDU,
								  H323SignalPDU & /*connectPDU*/)
{
	unsigned pi;

	if (h323debug) {
               cout << "\t=-= In OnAnswerCall for call " << GetCallReference() << endl;
	}

	if (connectionState == ShuttingDownConnection)
		return H323Connection::AnswerCallDenied;

	if (!setupPDU.GetQ931().GetProgressIndicator(pi)) {
		pi = 0;
	}
	if (h323debug) {
		cout << "\t\t- Progress Indicator: " << pi << endl;
	}
	if (progressAlert) {
		pi = progressAlert;
	} else if (pi == Q931::ProgressOriginNotISDN) {
		pi = Q931::ProgressInbandInformationAvailable;
	}
	if (pi) {
		alertingPDU->GetQ931().SetProgressIndicator(pi);
	}
	if (h323debug) {
		cout << "\t\t- Inserting PI of " << pi << " into ALERTING message" << endl;
	}

	if (!on_answer_call(GetCallReference(), (const char *)GetCallToken())) {
		return H323Connection::AnswerCallDenied;
	}
	/* The call will be answered later with "AnsweringCall()" function.
	 */ 
	return H323Connection::AnswerCallDeferredWithMedia;
}

BOOL MyH323Connection::OnAlerting(const H323SignalPDU & alertingPDU, const PString & username)
{
	if (h323debug) {
	        cout << "\t=-= In OnAlerting for call " << GetCallReference()
	              << ": sessionId=" << sessionId << endl;
                 cout << "\t-- Ringing phone for \"" << username << "\"" << endl;
	}

	if (on_progress) {
		BOOL isInband;
		unsigned alertingPI;

		if (!alertingPDU.GetQ931().GetProgressIndicator(alertingPI)) {
			alertingPI = 0;
		}
		if (h323debug) {
			cout << "\t\t- Progress Indicator: " << alertingPI << endl;
		}
		
		switch(alertingPI) {
		case Q931::ProgressNotEndToEndISDN:
		case Q931::ProgressInbandInformationAvailable:
			isInband = TRUE;
			break;
		default:
			isInband = FALSE;
		}
		on_progress(GetCallReference(), (const char *)GetCallToken(), isInband);
	}
        on_chan_ringing(GetCallReference(), (const char *)GetCallToken() );
        return connectionState != ShuttingDownConnection;
}

BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
{
	call_details_t cd;
	PString sourceE164;
	PString destE164;
	PString sourceName;
	PString sourceAliases;	
	PString destAliases;
	PIPSocket::Address Ip;
	WORD sourcePort;
	char *s, *s1; 

	if (h323debug) {
		cout << ("\t--Received SETUP message\n");
	}

	if (connectionState == ShuttingDownConnection)
		return FALSE;

	sourceAliases = setupPDU.GetSourceAliases();
	destAliases = setupPDU.GetDestinationAlias();
			
	sourceE164 = "";
	setupPDU.GetSourceE164(sourceE164);
	sourceName = "";
	sourceName=setupPDU.GetQ931().GetDisplayName();
	destE164 = "";
	setupPDU.GetDestinationE164(destE164);

	/* Convert complex strings */
	//  FIXME: deal more than one source alias 
    	if ((s = strchr(sourceAliases, ' ')) != NULL) {
                *s = '\0';
	}
    	if ((s = strchr(sourceAliases, '\t')) != NULL) {
                *s = '\0';
	}
 	if ((s1 = strchr(destAliases, ' ')) != NULL) {
         	*s1 = '\0';
	}
	if ((s1 = strchr(destAliases, '\t')) != NULL) {
         	*s1 = '\0';
	}

	memset(&cd, 0, sizeof(cd));
	cd.call_reference = GetCallReference();
	cd.call_token = strdup((const char *)GetCallToken());
	cd.call_source_aliases = strdup((const char *)sourceAliases);
	cd.call_dest_alias = strdup((const char *)destAliases);
	cd.call_source_e164 = strdup((const char *)sourceE164);
	cd.call_dest_e164 = strdup((const char *)destE164);
	cd.call_source_name = strdup((const char *)sourceName);

	GetSignallingChannel()->GetRemoteAddress().GetIpAndPort(Ip, sourcePort);
 	cd.sourceIp = strdup((const char *)Ip.AsString());

	/* Notify Asterisk of the request */
	call_options_t *res = on_incoming_call(&cd);

	if (!res) {
		if (h323debug) {
			cout << "	-- Call Failed" << endl;
		}
		return FALSE;
	}

	progressSetup = res->progress_setup;
	progressAlert = res->progress_alert;
	dtmfCodec = (RTP_DataFrame::PayloadTypes)res->dtmfcodec;


	return H323Connection::OnReceivedSignalSetup(setupPDU);
}

BOOL MyH323Connection::OnSendSignalSetup(H323SignalPDU & setupPDU)
{
	call_details_t cd;
	char *s, *s1;

	if (h323debug) { 
		cout << "	-- Sending SETUP message" << endl;
	}

	if (connectionState == ShuttingDownConnection)
		return FALSE;

	if (!ast_cid_num.IsEmpty()) {
		setupPDU.GetQ931().SetCallingPartyNumber(ast_cid_num);
	}

	if (!ast_cid_name.IsEmpty()) {
		setupPDU.GetQ931().SetDisplayName(ast_cid_name);
	}

	sourceAliases = setupPDU.GetSourceAliases();
	destAliases = setupPDU.GetDestinationAlias();

	sourceE164 = "";
	setupPDU.GetSourceE164(sourceE164);
	destE164 = "";
	setupPDU.GetDestinationE164(destE164);

	/* Convert complex strings */
	//  FIXME: deal more than one source alias 
	
    	if ((s = strchr(sourceAliases, ' ')) != NULL) {
                *s = '\0';
	}
    	if ((s = strchr(sourceAliases, '\t')) != NULL) {
                *s = '\0';
	}
    	if ((s1 = strchr(destAliases, ' ')) != NULL) {
        	 *s1 = '\0';
	}
	if ((s1 = strchr(destAliases, '\t')) != NULL) {
         	*s1 = '\0';
	}

	memset(&cd, 0, sizeof(cd));
	cd.call_reference = GetCallReference();
	cd.call_token = strdup((const char *)GetCallToken());
	cd.call_source_aliases = strdup((const char *)sourceAliases);
	cd.call_dest_alias = strdup((const char *)destAliases);
	cd.call_source_e164 = strdup((const char *)sourceE164);
	cd.call_dest_e164 = strdup((const char *)destE164);

	int res = on_outgoing_call(&cd);
	if (!res) {
		if (h323debug) {
			cout << "\t-- Call Failed" << endl;
		}
		return FALSE;
	}

	if (progressSetup) {
		setupPDU.GetQ931().SetProgressIndicator(progressSetup);
	}
	return H323Connection::OnSendSignalSetup(setupPDU);
}

BOOL MyH323Connection::OnSendReleaseComplete(H323SignalPDU & releaseCompletePDU)
{
	if (h323debug) {
		cout << "\t-- Sending RELEASE COMPLETE" << endl;
	}
	if (cause > 0)
		releaseCompletePDU.GetQ931().SetCause((Q931::CauseValues)cause);
	return H323Connection::OnSendReleaseComplete(releaseCompletePDU);
}

BOOL MyH323Connection::OnReceivedFacility(const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout << "\t-- Received Facility message... " << endl;
	}	
	return H323Connection::OnReceivedFacility(pdu);
}

void MyH323Connection::OnReceivedReleaseComplete(const H323SignalPDU & pdu)
{
	if (h323debug) {
		cout <<  "\t-- Received RELEASE COMPLETE message..." << endl;
	}
	if (on_hangup)
		on_hangup(GetCallReference(), (const char *)GetCallToken(), pdu.GetQ931().GetCause());
	return H323Connection::OnReceivedReleaseComplete(pdu);
}

BOOL MyH323Connection::OnClosingLogicalChannel(H323Channel & channel)
{
	if (h323debug) {
		cout << "\t-- Closing logical channel..." << endl;
	}
	return H323Connection::OnClosingLogicalChannel(channel);
}

void MyH323Connection::SendUserInputTone(char tone, unsigned duration)
{
	if (h323debug) {
		cout << "\t-- Sending user input tone (" << tone << ") to remote" << endl;
	}
	on_send_digit(GetCallReference(), tone, (const char *)GetCallToken());	
	H323Connection::SendUserInputTone(tone, duration);
}

void MyH323Connection::OnUserInputTone(char tone, unsigned duration, unsigned logicalChannel, unsigned rtpTimestamp)
{
	if (mode == H323_DTMF_INBAND) {
		if (h323debug) {
			cout << "\t-- Received user input tone (" << tone << ") from remote" << endl;
		}
		on_send_digit(GetCallReference(), tone, (const char *)GetCallToken());
	}
	H323Connection::OnUserInputTone(tone, duration, logicalChannel, rtpTimestamp);
}

void MyH323Connection::OnUserInputString(const PString &value)
{
	if (mode == H323_DTMF_RFC2833) {
		if (h323debug) {
			cout <<  "\t-- Received user input string (" << value << ") from remote." << endl;
		}
		on_send_digit(GetCallReference(), value[0], (const char *)GetCallToken());
	}	
}

void MyH323Connection::OnSendCapabilitySet(H245_TerminalCapabilitySet & pdu)
{
	PINDEX i;

	H323Connection::OnSendCapabilitySet(pdu);

	H245_ArrayOf_CapabilityTableEntry & tables = pdu.m_capabilityTable;
	for(i = 0; i < tables.GetSize(); i++)
	{
		H245_CapabilityTableEntry & entry = tables[i];
		if (entry.HasOptionalField(H245_CapabilityTableEntry::e_capability)) {
			H245_Capability & cap = entry.m_capability;
			if (cap.GetTag() == H245_Capability::e_receiveRTPAudioTelephonyEventCapability) {
				H245_AudioTelephonyEventCapability & atec = cap;
				atec.m_dynamicRTPPayloadType = dtmfCodec;
				on_set_rfc2833_payload(GetCallReference(), (const char *)GetCallToken(), (int)dtmfCodec);
				if (h323debug) {
					cout << "\t-- Transmitting RFC2833 on payload " <<
						atec.m_dynamicRTPPayloadType << endl;
				}
			}
		}
	}
}

void MyH323Connection::OnSetLocalCapabilities()
{
	if (on_setcapabilities)
		on_setcapabilities(GetCallReference(), (const char *)callToken);
}

BOOL MyH323Connection::OnReceivedCapabilitySet(const H323Capabilities & remoteCaps,
					       const H245_MultiplexCapability * muxCap,
					       H245_TerminalCapabilitySetReject & reject)
{
	if (!H323Connection::OnReceivedCapabilitySet(remoteCaps, muxCap, reject)) {
		return FALSE;
	}

	const H323Capability * cap = remoteCaps.FindCapability(H323_UserInputCapability::SubTypeNames[H323_UserInputCapability::SignalToneRFC2833]);
	if (cap != NULL) {
		RTP_DataFrame::PayloadTypes pt = ((H323_UserInputCapability*)cap)->GetPayloadType();
		on_set_rfc2833_payload(GetCallReference(), (const char *)GetCallToken(), (int)pt);
		if (h323debug) {
			cout << "\t-- Inbound RFC2833 on payload " << pt << endl;
		}
	}
	return TRUE;
}

H323Channel * MyH323Connection::CreateRealTimeLogicalChannel(const H323Capability & capability,	
								   H323Channel::Directions dir,
								   unsigned sessionID,
		 					           const H245_H2250LogicalChannelParameters * /*param*/,
								   RTP_QOS * /*param*/ )
{
	return new MyH323_ExternalRTPChannel(*this, capability, dir, sessionID);
}

/** This callback function is invoked once upon creation of each
  * channel for an H323 session 
  */
BOOL MyH323Connection::OnStartLogicalChannel(H323Channel & channel)
{    
	/* Increase the count of channels we have open */
	channelsOpen++;

	if (h323debug) {
		cout << "\t-- Started logical channel: ";
		cout << ((channel.GetDirection()==H323Channel::IsTransmitter)?"sending ":((channel.GetDirection()==H323Channel::IsReceiver)?"receiving ":" "));
		cout << (const char *)(channel.GetCapability()).GetFormatName() << endl;
		cout <<  "\t\t-- channelsOpen = " << channelsOpen << endl;
	}
	return connectionState != ShuttingDownConnection;
}

void MyH323Connection::SetCapabilities(int cap, int dtmfMode)
{
	int g711Frames = 20;
//	int gsmFrames  = 4;
	PINDEX lastcap = -1; /* last common capability index */

#if 0
	if (cap & AST_FORMAT_SPEEX) {
		/* Not real sure if Asterisk acutally supports all
		   of the various different bit rates so add them 
		   all and figure it out later*/

		localCapabilities.SetCapability(0, 0, new SpeexNarrow2AudioCapability());
		localCapabilities.SetCapability(0, 0, new SpeexNarrow3AudioCapability());
		localCapabilities.SetCapability(0, 0, new SpeexNarrow4AudioCapability());
		localCapabilities.SetCapability(0, 0, new SpeexNarrow5AudioCapability());
		localCapabilities.SetCapability(0, 0, new SpeexNarrow6AudioCapability());
	}
#endif 
	if (cap & AST_FORMAT_G729A) {
		AST_G729ACapability *g729aCap;
		AST_G729Capability *g729Cap;
		lastcap = localCapabilities.SetCapability(0, 0, g729aCap = new AST_G729ACapability);
		lastcap = localCapabilities.SetCapability(0, 0, g729Cap = new AST_G729Capability);
	}
	
	if (cap & AST_FORMAT_G723_1) {
		H323_G7231Capability *g7231Cap;
		lastcap = localCapabilities.SetCapability(0, 0, g7231Cap = new H323_G7231Capability);
	} 
#if 0
	if (cap & AST_FORMAT_GSM) {
		H323_GSM0610Capability *gsmCap;
	    	lastcap = localCapabilities.SetCapability(0, 0, gsmCap = new H323_GSM0610Capability);
	    	gsmCap->SetTxFramesInPacket(gsmFrames);
	} 
#endif
	if (cap & AST_FORMAT_ULAW) {
		H323_G711Capability *g711uCap;
	    	lastcap = localCapabilities.SetCapability(0, 0, g711uCap = new H323_G711Capability(H323_G711Capability::muLaw));
		g711uCap->SetTxFramesInPacket(g711Frames);
	} 

	if (cap & AST_FORMAT_ALAW) {