main.cxx

mgcp协议源代码。支持多种编码：g711

  // Start the listener thread for incoming calls.
  H323ListenerTCP * listener;
  if (args.GetOptionString('i').IsEmpty())
    listener  = new H323ListenerTCP(*this);
  else {
    PIPSocket::Address interfaceAddress(args.GetOptionString('i'));
    listener  = new H323ListenerTCP(*this, interfaceAddress);
  }
  if (!StartListener(listener)) {
    cerr <<  "Could not open H.323 listener port on "
         << listener->GetListenerPort() << endl;
    return FALSE;
  }


  // Establish link with gatekeeper if required.
  if (args.HasOption('g')) {
    PString gkName = args.GetOptionString('g');
    H323TransportUDP * rasChannel;
    if (args.GetOptionString('i').IsEmpty())
      rasChannel  = new H323TransportUDP(*this);
    else {
      PIPSocket::Address interfaceAddress(args.GetOptionString('i'));
      rasChannel  = new H323TransportUDP(*this, interfaceAddress);
    }
    if (SetGatekeeper(gkName, rasChannel))
      cout << "Gatekeeper set: " << *gatekeeper << endl;
    else {
      cerr << "Error registering with gatekeeper at \"" << gkName << '"' << endl;
      return FALSE;
    }
  }
  else if (!args.HasOption('n') || args.HasOption('r')) {
    cout << "Searching for gatekeeper..." << flush;
    if (DiscoverGatekeeper(new H323TransportUDP(*this)))
      cout << "\nGatekeeper found: " << *gatekeeper << endl;
    else {
      cerr << "\nNo gatekeeper found." << endl;
      if (args.HasOption("require-gatekeeper")) 
        return FALSE;
    }
  }

  return TRUE;
}


BOOL SimpleH323EndPoint::SetSoundDevice(PArgList & args,
                                        const char * optionName,
                                        PSoundChannel::Directions dir)
{
  if (!args.HasOption(optionName))
    return TRUE;

  PString dev = args.GetOptionString(optionName);

  if (dir == PSoundChannel::Player) {
    if (SetSoundChannelPlayDevice(dev))
      return TRUE;
  }
  else {
    if (SetSoundChannelRecordDevice(dev))
      return TRUE;
  }

  cerr << "Device for " << optionName << " (\"" << dev << "\") must be one of:\n";

  PStringArray names = PSoundChannel::GetDeviceNames(dir);
  for (PINDEX i = 0; i < names.GetSize(); i++)
    cerr << "  \"" << names[i] << "\"\n";

  return FALSE;
}


H323Connection * SimpleH323EndPoint::CreateConnection(unsigned callReference)
{
  return new SimpleH323Connection(*this, callReference, noFastStart, doH245Tunnelling);
}


BOOL SimpleH323EndPoint::OnIncomingCall(H323Connection & connection,
                                        const H323SignalPDU &,
                                        H323SignalPDU &)
{
  if (currentCallToken.IsEmpty())
    return TRUE;

  if (busyForwardParty.IsEmpty()) {
    cout << "Incoming call from \"" << connection.GetRemotePartyName() << "\" rejected, line busy!" << endl;
    return FALSE;
  }

  cout << "Forwarding call to \"" << busyForwardParty << "\"." << endl;
  return !connection.ForwardCall(busyForwardParty);
}


H323Connection::AnswerCallResponse
                   SimpleH323EndPoint::OnAnswerCall(H323Connection & connection,
                                                    const PString & caller,
                                                    const H323SignalPDU &,
                                                    H323SignalPDU &)
{
  currentCallToken = connection.GetCallToken();

  if (autoAnswer) {
    cout << "Automatically accepting call." << endl;
    return H323Connection::AnswerCallNow;
  }

  cout << "Incoming call from \""
       << caller
       << "\", answer call (Y/n)? "
       << flush;

  return H323Connection::AnswerCallPending;
}


BOOL SimpleH323EndPoint::OnConnectionForwarded(H323Connection & /*connection*/,
                                               const PString & forwardParty,
                                               const H323SignalPDU & /*pdu*/)
{
  if (MakeCall(forwardParty, currentCallToken)) {
    cout << "Call is being forwarded to host " << forwardParty << endl;
    return TRUE;
  }

  cout << "Error forwarding call to \"" << forwardParty << '"' << endl;
  return FALSE;
}


void SimpleH323EndPoint::OnConnectionEstablished(H323Connection & connection,
                                                 const PString & token)
{
  currentCallToken = token;
  cout << "In call with " << connection.GetRemotePartyName() << endl;
}


void SimpleH323EndPoint::OnConnectionCleared(H323Connection & connection,
                                             const PString & clearedCallToken)
{
  if (currentCallToken == clearedCallToken)
    currentCallToken = PString();

  PString remoteName = '"' + connection.GetRemotePartyName() + '"';
  switch (connection.GetCallEndReason()) {
    case H323Connection::EndedByRemoteUser :
      cout << remoteName << " has cleared the call";
      break;
    case H323Connection::EndedByCallerAbort :
      cout << remoteName << " has stopped calling";
      break;
    case H323Connection::EndedByRefusal :
      cout << remoteName << " did not accept your call";
      break;
    case H323Connection::EndedByNoAnswer :
      cout << remoteName << " did not answer your call";
      break;
    case H323Connection::EndedByTransportFail :
      cout << "Call with " << remoteName << " ended abnormally";
      break;
    case H323Connection::EndedByCapabilityExchange :
      cout << "Could not find common codec with " << remoteName;
      break;
    case H323Connection::EndedByNoAccept :
      cout << "Did not accept incoming call from " << remoteName;
      break;
    case H323Connection::EndedByAnswerDenied :
      cout << "Refused incoming call from " << remoteName;
      break;
    case H323Connection::EndedByNoUser :
      cout << "Gatekeeper could find user " << remoteName;
      break;
    case H323Connection::EndedByNoBandwidth :
      cout << "Call to " << remoteName << " aborted, insufficient bandwidth.";
      break;
    case H323Connection::EndedByConnectFail :
      switch (connection.GetSignallingChannel()->GetErrorNumber()) {
        case ENETUNREACH :
          cout << remoteName << " could not be reached.";
          break;
        case ETIMEDOUT :
          cout << remoteName << " is not online.";
          break;
        case ECONNREFUSED :
          cout << "No phone running for " << remoteName;
          break;
        default :
          cout << "Transport error calling " << remoteName;
      }
      break;
    default :
      cout << "Call with " << remoteName << " completed";
  }
  cout << ", duration "
       << setprecision(0) << setw(5)
       << (PTime() - connection.GetConnectionStartTime())
       << endl;
}


BOOL SimpleH323EndPoint::OpenAudioChannel(H323Connection & connection,
                                          BOOL isEncoding,
                                          unsigned bufferSize,
                                          H323AudioCodec & codec)
{
  codec.SetSilenceDetectionMode(silenceOn ? H323AudioCodec::AdaptiveSilenceDetection
                                          : H323AudioCodec::NoSilenceDetection);

  if (H323EndPoint::OpenAudioChannel(connection, isEncoding, bufferSize, codec))
    return TRUE;

  cerr << "Could not open sound device ";
  if (isEncoding)
    cerr << GetSoundChannelRecordDevice();
  else
    cerr << GetSoundChannelPlayDevice();
  cerr << " - Check permissions or full duplex capability." << endl;

  return FALSE;
}



///////////////////////////////////////////////////////////////

SimpleH323Connection::SimpleH323Connection(SimpleH323EndPoint & ep,
                                           unsigned callReference,
                                           BOOL dontFastStart,
                                           BOOL doH245Tunnelling)
  : H323Connection(ep, callReference)
{
  noFastStart = dontFastStart;
  h245Tunneling = doH245Tunnelling;
}


void SimpleH323Connection::SelectFastStartChannels(unsigned sessionID)
{
  if (noFastStart)
    return;

  H323Connection::SelectFastStartChannels(sessionID);
}


BOOL SimpleH323Connection::OnStartLogicalChannel(H323Channel & channel)
{
  if (!H323Connection::OnStartLogicalChannel(channel))
    return FALSE;

  cout << "Started logical channel: ";

  switch (channel.GetDirection()) {
    case H323Channel::IsTransmitter :
      cout << "sending ";
      break;

    case H323Channel::IsReceiver :
      cout << "receiving ";
      break;

    default :
      break;
  }

  cout << channel.GetCapability() << endl;  

  return TRUE;
}



void SimpleH323Connection::OnUserInputString(const PString & value)
{
  cout << "User input received: \"" << value << '"' << endl;
}



// End of File ///////////////////////////////////////////////////////////////