managerimpl.cpp

/*
 *  Copyright (C) 2004-2007 Savoir-Faire Linux inc.
 *  Author: Alexandre Bourget <alexandre.bourget@savoirfairelinux.com>
 *  Author: Yan Morin <yan.morin@savoirfairelinux.com>
 *  Author: Laurielle Lea <laurielle.lea@savoirfairelinux.com>
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include <errno.h>
#include <time.h>
#include <cstdlib>
#include <iostream>
#include <fstream>

#include <sys/types.h> // mkdir(2)
#include <sys/stat.h>	// mkdir(2)

#include <cc++/socket.h>   // why do I need this here?
#include <ccrtp/channel.h> // why do I need this here?
#include <ccrtp/rtp.h>     // why do I need this here?
#include <cc++/file.h>

#include "manager.h"
#include "account.h"
#include "audio/audiolayer.h"
#include "audio/audiocodec.h"
#include "audio/tonelist.h"

#include "accountcreator.h" // create new account
#include "voiplink.h"

#include "user_cfg.h"

#ifdef USE_ZEROCONF
#include "zeroconf/DNSService.h"
#include "zeroconf/DNSServiceTXTRecord.h"
#endif

#define fill_config_str(name, value) \
  (_config.addConfigTreeItem(section, Conf::ConfigTreeItem(std::string(name), std::string(value), type_str)))
#define fill_config_int(name, value) \
  (_config.addConfigTreeItem(section, Conf::ConfigTreeItem(std::string(name), std::string(value), type_int)))

ManagerImpl::ManagerImpl (void)
{
  // Init private variables 
  _hasZeroconf = false;
#ifdef USE_ZEROCONF
  _hasZeroconf = true;
  _DNSService = new DNSService();
#endif

  // setup
  _path = ""; 
  _exist = 0;
  _setupLoaded = false;
  _dbus = NULL;

  // sound
  _audiodriver = NULL;
  _dtmfKey = 0;
  _spkr_volume = 0;  // Initialize after by init() -> initVolume()
  _mic_volume  = 0;  // Initialize after by init() -> initVolume()
  _mic_volume_before_mute = 0; 

  // Call
  _nbIncomingWaitingCall=0;
  _hasTriedToRegister = false;

  // initialize random generator for call id
  srand (time(NULL));

#ifdef TEST
  testAccountMap();
  loadAccountMap();
  testCallAccountMap();
  unloadAccountMap();
#endif

  // should be call before initConfigFile
  // loadAccountMap();, called in init() now.
}

// never call if we use only the singleton...
ManagerImpl::~ManagerImpl (void) 
{
  terminate();

#ifdef USE_ZEROCONF
  delete _DNSService; _DNSService = 0;
#endif

  _debug("%s stop correctly.\n", PROGNAME);
}

void 
ManagerImpl::init() 
{
  // Load accounts, init map
  loadAccountMap();

  initVolume();

  if (_exist == 0) {
    _debug("Cannot create config file in your home directory\n");
  }

  initAudioDriver();
  selectAudioDriver();

  initAudioCodec();

  AudioLayer *audiolayer = getAudioDriver();
  if (audiolayer!=0) {
    unsigned int sampleRate = audiolayer->getSampleRate();

    _debugInit("Load Telephone Tone");
    std::string country = getConfigString(PREFERENCES, ZONE_TONE);
    _telephoneTone = new TelephoneTone(country, sampleRate);

    _debugInit("Loading DTMF key");
    _dtmfKey = new DTMF(sampleRate);
  }

  // initRegisterAccounts was here, but we doing it after the gui loaded... 
  // the stun detection is long, so it's a better idea to do it after getEvents
  initZeroconf();
}

void ManagerImpl::terminate()
{
  saveConfig();

  unloadAccountMap();

  _debug("Unload DTMF Key\n");
  delete _dtmfKey;

  _debug("Unload Audio Driver\n");
  delete _audiodriver; _audiodriver = NULL;

  _debug("Unload Telephone Tone\n");
  delete _telephoneTone; _telephoneTone = NULL;
}

bool
ManagerImpl::isCurrentCall(const CallID& callId) {
  ost::MutexLock m(_currentCallMutex);
  return (_currentCallId2 == callId ? true : false);
}

bool
ManagerImpl::hasCurrentCall() {
  ost::MutexLock m(_currentCallMutex);
  if ( _currentCallId2 != "") {
    return true;
  }
  return false;
}

const CallID& 
ManagerImpl::getCurrentCallId() {
  ost::MutexLock m(_currentCallMutex);
  return _currentCallId2;
}

void
ManagerImpl::switchCall(const CallID& id ) {
  ost::MutexLock m(_currentCallMutex);
  _currentCallId2 = id;
}


///////////////////////////////////////////////////////////////////////////////
// Management of events' IP-phone user
///////////////////////////////////////////////////////////////////////////////
/* Main Thread */ 
bool
ManagerImpl::outgoingCall(const std::string& accountid, const CallID& id, const std::string& to)
{
  if (!accountExists(accountid)) {
    _debug("! Manager Error: Outgoing Call: account doesn't exist\n");
    return false;
  }
  if (getAccountFromCall(id) != AccountNULL) {
    _debug("! Manager Error: Outgoing Call: call id already exists\n");
    return false;
  }
  if (hasCurrentCall()) {
    _debug("* Manager Info: there is currently a call, try to hold it\n");
    onHoldCall(getCurrentCallId());
  }
  _debug("- Manager Action: Adding Outgoing Call %s on account %s\n", id.data(), accountid.data());
  if ( getAccountLink(accountid)->newOutgoingCall(id, to) ) {
    associateCallToAccount( id, accountid );
    switchCall(id);
    return true;
  } else {
    _debug("! Manager Error: An error occur, the call was not created\n");
  }
  return false;
}

//THREAD=Main : for outgoing Call
bool
ManagerImpl::answerCall(const CallID& id)
{
  stopTone(false); 
  if (hasCurrentCall()) 
  { 
    onHoldCall(getCurrentCallId());
  }
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("Answering Call: Call doesn't exists\n");
    return false;
  }

  if (!getAccountLink(accountid)->answer(id)) {
    // error when receiving...
    removeCallAccount(id);
    return false;
  }

  //Place current call on hold if it isn't
  
  
  // if it was waiting, it's waiting no more
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "CURRENT");
  removeWaitingCall(id);
  switchCall(id);
  return true;
}

//THREAD=Main
bool 
ManagerImpl::sendTextMessage(const AccountID& accountId, const std::string& to, const std::string& message) 
{
  if (accountExists(accountId)) {
    return getAccountLink(accountId)->sendMessage(to, message);
  }
  return false;
}

//THREAD=Main
bool
ManagerImpl::hangupCall(const CallID& id)
{
  stopTone(true);
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "HUNGUP");
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    /** @todo We should tell the GUI that the call doesn't exist, so
     * it clears up. This can happen. */
    _debug("! Manager Hangup Call: Call doesn't exists\n");
    return false;
  }

  bool returnValue = getAccountLink(accountid)->hangup(id);
  removeCallAccount(id);
  switchCall("");
  
  
  return returnValue;
}

//THREAD=Main
bool
ManagerImpl::cancelCall (const CallID& id)
{
  stopTone(true);
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("! Manager Cancel Call: Call doesn't exists\n");
    return false;
  }

  bool returnValue = getAccountLink(accountid)->cancel(id);
  // it could be a waiting call?
  removeWaitingCall(id);
  removeCallAccount(id);
  switchCall("");
  
  return returnValue;
}

//THREAD=Main
bool
ManagerImpl::onHoldCall(const CallID& id)
{
  stopTone(true);
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("5 Manager On Hold Call: Account ID %s or callid %s desn't exists\n", accountid.c_str(), id.c_str());
    return false;
  }

  _debug("Setting ONHOLD, Account %s, callid %s\n", accountid.c_str(), id.c_str());

  bool returnValue = getAccountLink(accountid)->onhold(id);
  
  removeWaitingCall(id);
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "HOLD");
  switchCall("");
  
  return returnValue;
}

//THREAD=Main
bool
ManagerImpl::offHoldCall(const CallID& id)
{
  stopTone(false);
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("5 Manager OffHold Call: Call doesn't exists\n");
    return false;
  }
  
  //Place current call on hold if it isn't
  if (hasCurrentCall()) 
  { 
    onHoldCall(getCurrentCallId());
  }
  
  _debug("Setting OFFHOLD, Account %s, callid %s\n", accountid.c_str(), id.c_str());

  bool returnValue = getAccountLink(accountid)->offhold(id);
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "UNHOLD");
  switchCall(id);
  if (returnValue) {
    try {
      getAudioDriver()->startStream();
    } catch(...) {
      _debugException("! Manager Off hold could not start audio stream");
    }
  }
  return returnValue;
}

//THREAD=Main
bool
ManagerImpl::transferCall(const CallID& id, const std::string& to)
{
  stopTone(true);
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("! Manager Transfer Call: Call doesn't exists\n");
    return false;
  }
  bool returnValue = getAccountLink(accountid)->transfer(id, to);
  removeWaitingCall(id);
  removeCallAccount(id);
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "HUNGUP");
  switchCall("");

  return returnValue;
}

//THREAD=Main
void
ManagerImpl::mute() {
  _mic_volume_before_mute = _mic_volume;
  setMicVolume(0);
}

//THREAD=Main
void
ManagerImpl::unmute() {
  if ( _mic_volume == 0 ) {
    setMicVolume(_mic_volume_before_mute);
  }
}

//THREAD=Main : Call:Incoming
bool
ManagerImpl::refuseCall (const CallID& id)
{
  stopTone(true);
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("! Manager OffHold Call: Call doesn't exists\n");
    return false;
  }
  bool returnValue = getAccountLink(accountid)->refuse(id);
  // if the call was outgoing or established, we didn't refuse it
  // so the method did nothing
  if (returnValue) {
    removeWaitingCall(id);
    removeCallAccount(id);
    if (_dbus) _dbus->getCallManager()->callStateChanged(id, "HUNGUP");
    switchCall("");
  }
  return returnValue;
}

//THREAD=Main
bool
ManagerImpl::saveConfig (void)
{
  _debug("Saving Configuration...\n");
  setConfig(AUDIO, VOLUME_SPKR, getSpkrVolume());
  setConfig(AUDIO, VOLUME_MICRO, getMicVolume());

  _setupLoaded = _config.saveConfigTree(_path.data());
  return _setupLoaded;
}

//THREAD=Main
bool
ManagerImpl::initRegisterAccounts() 
{
  _debugInit("Initiate VoIP Links Registration");
  AccountMap::iterator iter = _accountMap.begin();
  while( iter != _accountMap.end() ) {
    if ( iter->second) {
      iter->second->loadConfig();
      if ( iter->second->isEnabled() ) {
	iter->second->registerVoIPLink();
      }
    }
    iter++;
  }
  return true;
}

//THREAD=Main
// Currently unused
bool
ManagerImpl::registerAccount(const AccountID& accountId)
{
  _debug("Register one VoIP Link\n");

  // right now, we don't support two SIP account
  // so we close everything before registring a new account
  Account* account = getAccount(accountId);
  if (account != 0) {
    AccountMap::iterator iter = _accountMap.begin();
    while ( iter != _accountMap.end() ) {
      if ( iter->second ) {
        iter->second->unregisterVoIPLink();
      }
      iter++;
    }
    account->registerVoIPLink();
  }
  return true;
}

//THREAD=Main
// Currently unused
bool 
ManagerImpl::unregisterAccount(const AccountID& accountId)
{
  _debug("Unregister one VoIP Link\n");

  if (accountExists( accountId ) ) {
    getAccount(accountId)->unregisterVoIPLink();
  }
  return true;
}

//THREAD=Main
bool 
ManagerImpl::sendDtmf(const CallID& id, char code)
{
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("Send DTMF: call doesn't exists\n");
    return false;
  }

  int sendType = getConfigInt(SIGNALISATION, SEND_DTMF_AS);
  bool returnValue = false;
  switch (sendType) {
  case 0: // SIP INFO
    playDtmf(code);
    returnValue = getAccountLink(accountid)->carryingDTMFdigits(id, code);
    break;

  case 1: // Audio way
    break;
  case 2: // rfc 2833
    break;
  default: // unknown - error config?
    break;
  }
  return returnValue;
}

//THREAD=Main | VoIPLink
bool
ManagerImpl::playDtmf(char code)
{
  // HERE are the variable:
  // - boolean variable to play or not (config)
  // - length in milliseconds to play
  // - sample of audiolayer
  stopTone(false);
  int hasToPlayTone = getConfigInt(SIGNALISATION, PLAY_DTMF);
  if (!hasToPlayTone) return false;

  // length in milliseconds
  int pulselen = getConfigInt(SIGNALISATION, PULSE_LENGTH);
  if (!pulselen) { return false; }

  // numbers of int = length in milliseconds / 1000 (number of seconds)
  //                = number of seconds * SAMPLING_RATE by SECONDS
  AudioLayer* audiolayer = getAudioDriver();

  // fast return, no sound, so no dtmf
  if (audiolayer==0 || _dtmfKey == 0) { return false; }
  // number of data sampling in one pulselen depends on samplerate
  // size (n sampling) = time_ms * sampling/s 
  //                     ---------------------
  //                            ms/s
  int size = (int)(pulselen * ((float)audiolayer->getSampleRate()/1000));

  // this buffer is for mono
  // TODO <-- this should be global and hide if same size
  SFLDataFormat* _buf = new SFLDataFormat[size];
  bool returnValue = false;

  // Handle dtmf
  _dtmfKey->startTone(code);

  // copy the sound
  if ( _dtmfKey->generateDTMF(_buf, size) ) {

    // Put buffer to urgentRingBuffer 
    // put the size in bytes...
    // so size * 1 channel (mono) * sizeof (bytes for the data)
    audiolayer->putUrgent(_buf, size * sizeof(SFLDataFormat));

    try {
      // We activate the stream if it's not active yet.
      if (!audiolayer->isStreamActive()) {
        audiolayer->startStream();
      } else {
        audiolayer->sleep(pulselen); // in milliseconds
      }
    } catch(...) {
      _debugException("Portaudio exception when playing a dtmf");
    }
    returnValue = true;
  }

  // TODO: add caching
  delete[] _buf; _buf = 0;
  return returnValue;
}

// Multi-thread 
bool
ManagerImpl::incomingCallWaiting() {
  ost::MutexLock m(_waitingCallMutex);
  return (_nbIncomingWaitingCall > 0) ? true : false;
}

void
ManagerImpl::addWaitingCall(const CallID& id) {
  ost::MutexLock m(_waitingCallMutex);
  _waitingCall.insert(id);
  _nbIncomingWaitingCall++;
}

void
ManagerImpl::removeWaitingCall(const CallID& id) {
  ost::MutexLock m(_waitingCallMutex);
  // should return more than 1 if it erase a call
  if (_waitingCall.erase(id)) {
    _nbIncomingWaitingCall--;
  }
}

bool
ManagerImpl::isWaitingCall(const CallID& id) {
  ost::MutexLock m(_waitingCallMutex);
  CallIDSet::iterator iter = _waitingCall.find(id);
  if (iter != _waitingCall.end()) {
    return false;
  }
  return true;
}



///////////////////////////////////////////////////////////////////////////////
// Management of event peer IP-phone 
////////////////////////////////////////////////////////////////////////////////
// SipEvent Thread 
bool 
ManagerImpl::incomingCall(Call* call, const AccountID& accountId) 
{
  _debug("Incoming call\n");

  associateCallToAccount(call->getCallId(), accountId);

  if ( !hasCurrentCall() ) {
    call->setConnectionState(Call::Ringing);
    ringtone();
    switchCall(call->getCallId());
  } else {
     addWaitingCall(call->getCallId());
  }

  std::string from = call->getPeerName();
  std::string number = call->getPeerNumber();

  if (from != "" && number != "") {
    from.append(" <");
    from.append(number);
    from.append(">");
  } else if ( from.empty() ) {
    from.append("<");
    from.append(number);
    from.append(">");
  }
  _dbus->getCallManager()->incomingCall(accountId, call->getCallId(), from);
  return true;
}

//THREAD=VoIP
void
ManagerImpl::incomingMessage(const AccountID& accountId, const std::string& message) {
  if (_dbus) {
    _dbus->getCallManager()->incomingMessage(accountId, message);
  }
}

//THREAD=VoIP CALL=Outgoing
void
ManagerImpl::peerAnsweredCall(const CallID& id)
{
  if (isCurrentCall(id)) {
    stopTone(false);
  }
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "CURRENT");
}

//THREAD=VoIP Call=Outgoing
void
ManagerImpl::peerRingingCall(const CallID& id)
{
  if (isCurrentCall(id)) {
    ringback();
  }
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "RINGING");
}

//THREAD=VoIP Call=Outgoing/Ingoing
void
ManagerImpl::peerHungupCall(const CallID& id)
{
  AccountID accountid = getAccountFromCall( id );
  if (accountid == AccountNULL) {
    _debug("peerHungupCall: Call doesn't exists\n");
    return;
  }
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "HUNGUP");
  if (isCurrentCall(id)) {
    stopTone(true);
    switchCall("");
  }
  removeWaitingCall(id);
  removeCallAccount(id);
  
}

//THREAD=VoIP
void
ManagerImpl::callBusy(const CallID& id) {
  _debug("Call busy\n");
  
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "BUSY");
  if (isCurrentCall(id) ) {
    playATone(Tone::TONE_BUSY);
    switchCall("");
  }
  removeCallAccount(id);
  removeWaitingCall(id);
}

//THREAD=VoIP
void
ManagerImpl::callFailure(const CallID& id) 
{
  _debug("Call failed\n");
  if (_dbus) _dbus->getCallManager()->callStateChanged(id, "FAILURE");
  if (isCurrentCall(id) ) {
    playATone(Tone::TONE_BUSY);
    switchCall("");
  }
  removeCallAccount(id);
  removeWaitingCall(id);
  
}

//THREAD=VoIP
void 
ManagerImpl::displayTextMessage(const CallID& id, const std::string& message)
{
  /*if(_gui) {
   _gui->displayTextMessage(id, message);
  }*/
}

//THREAD=VoIP
void 
ManagerImpl::displayErrorText(const CallID& id, const std::string& message)
{
  /*if(_gui) {
    _gui->displayErrorText(id, message);
  } else {
    std::cerr << message << std::endl;
  }*/
}

//THREAD=VoIP
void 
ManagerImpl::displayError (const std::string& error)
{
  /*if(_gui) {
    _gui->displayError(error);
  }*/
}

//THREAD=VoIP
void 
ManagerImpl::displayStatus(const std::string& status)
{
  /*if(_gui) {
    _gui->displayStatus(status);
  }*/
}

//THREAD=VoIP
void 
ManagerImpl::displayConfigError (const std::string& message)
{
  /*if(_gui) {
    _gui->displayConfigError(message);
  }*/
}

//THREAD=VoIP
void
ManagerImpl::startVoiceMessageNotification(const AccountID& accountId, const std::string& nb_msg)
{
  if (_dbus) _dbus->getCallManager()->voiceMailNotify(accountId, atoi(nb_msg.c_str()) );
}

//THREAD=VoIP
void
ManagerImpl::stopVoiceMessageNotification(const AccountID& accountId)
{
  if (_dbus) _dbus->getCallManager()->voiceMailNotify(accountId, 0 );
} 

//THREAD=VoIP
void 
ManagerImpl::registrationSucceed(const AccountID& accountid)
{
  Account* acc = getAccount(accountid);
 if ( acc ) { 
    //acc->setState(true); 
    if (_dbus) _dbus->getConfigurationManager()->accountsChanged();
  }
}

//THREAD=VoIP
void 
ManagerImpl::registrationFailed(const AccountID& accountid)
{
  Account* acc = getAccount(accountid);
  if ( acc ) { 
    //acc->setState(false);
    if (_dbus) _dbus->getConfigurationManager()->accountsChanged();
  }
}

/**
 * Multi Thread
 */
bool 
ManagerImpl::playATone(Tone::TONEID toneId) {
  int hasToPlayTone = getConfigInt(SIGNALISATION, PLAY_TONES);
  if (!hasToPlayTone) return false;

  if (_telephoneTone != 0) {
    _toneMutex.enterMutex();
    _telephoneTone->setCurrentTone(toneId);
    _toneMutex.leaveMutex();

    try {
      AudioLayer* audiolayer = getAudioDriver();
      if (audiolayer) { audiolayer->startStream(); }
    } catch(...) {
      _debugException("Off hold could not start audio stream");
      return false;
    }
  }
  return true;
}

/**
 * Multi Thread
 */
void 
ManagerImpl::stopTone(bool stopAudio=true) {
  int hasToPlayTone = getConfigInt(SIGNALISATION, PLAY_TONES);
  if (!hasToPlayTone) return;

  if (stopAudio) {
    try {
      AudioLayer* audiolayer = getAudioDriver();
      if (audiolayer) { audiolayer->stopStream(); }
    } catch(...) {
      _debugException("Stop tone and stop stream");
    }
  }

  _toneMutex.enterMutex();
  if (_telephoneTone != 0) {
    _telephoneTone->setCurrentTone(Tone::TONE_NULL);
  }
  _toneMutex.leaveMutex();

  // for ringing tone..
  _toneMutex.enterMutex();
  _audiofile.stop();
  _toneMutex.leaveMutex();
}

/**
 * Multi Thread
 */
bool
ManagerImpl::playTone()
{
  //return playATone(Tone::TONE_DIALTONE);
  playATone(Tone::TONE_DIALTONE);
}

/**
 * Multi Thread
 */
void
ManagerImpl::congestion () {
  playATone(Tone::TONE_CONGESTION);
}

/**
 * Multi Thread
 */
void
ManagerImpl::ringback () {
  playATone(Tone::TONE_RINGTONE);
}

/**
 * Multi Thread
 */
void
ManagerImpl::ringtone() 
{
  int hasToPlayTone = getConfigInt(SIGNALISATION, PLAY_TONES);
  if (!hasToPlayTone) { return; }

  std::string ringchoice = getConfigString(AUDIO, RING_CHOICE);
  //if there is no / inside the path
  if ( ringchoice.find(DIR_SEPARATOR_CH) == std::string::npos ) {
    // check inside global share directory
    ringchoice = std::string(PROGSHAREDIR) + DIR_SEPARATOR_STR + RINGDIR + DIR_SEPARATOR_STR + ringchoice; 
  }

  AudioLayer* audiolayer = getAudioDriver();
  if (audiolayer==0) { return; }
  int sampleRate  = audiolayer->getSampleRate();

  _toneMutex.enterMutex(); 
  bool loadFile = _audiofile.loadFile(ringchoice, sampleRate);
  _toneMutex.leaveMutex(); 
  if (loadFile) {
    _toneMutex.enterMutex(); 
    _audiofile.start();
    _toneMutex.leaveMutex(); 
    try {
      audiolayer->startStream();
    } catch(...) {
      _debugException("Audio file couldn't start audio stream");
    }
  } else {
    ringback();
  }
}

AudioLoop*
ManagerImpl::getTelephoneTone()
{
  if(_telephoneTone != 0) {
    ost::MutexLock m(_toneMutex);
    return _telephoneTone->getCurrentTone();
  }
  else {
    return 0;
  }
}

AudioLoop*
ManagerImpl::getTelephoneFile()
{
  ost::MutexLock m(_toneMutex);
  if(_audiofile.isStarted()) {
    return &_audiofile;
  } else {
    return 0;
  }
}


/**
 * Use Urgent Buffer
 * By AudioRTP thread
 */
void
ManagerImpl::notificationIncomingCall(void) {

  AudioLayer* audiolayer = getAudioDriver();
  if (audiolayer != 0) {
    unsigned int samplerate = audiolayer->getSampleRate();
    std::ostringstream frequency;
    frequency << "440/" << FRAME_PER_BUFFER;

    Tone tone(frequency.str(), samplerate);
    unsigned int nbSampling = tone.getSize();
    SFLDataFormat buf[nbSampling];
    tone.getNext(buf, tone.getSize());
    audiolayer->putUrgent(buf, sizeof(SFLDataFormat)*nbSampling);
  }
}

/**
 * Multi Thread
 */
bool
ManagerImpl::getStunInfo (StunAddress4& stunSvrAddr, int port) 
{
  StunAddress4 mappedAddr;
  struct in_addr in;
  char* addr;

  //int fd3, fd4;
  // bool ok = stunOpenSocketPair(stunSvrAddr, &mappedAddr, &fd3, &fd4, port);
  int fd1 = stunOpenSocket(stunSvrAddr, &mappedAddr, port);
  bool ok = (fd1 == -1 || fd1 == INVALID_SOCKET) ? false : true;
  if (ok) {
    closesocket(fd1);
    //closesocket(fd3);
    //closesocket(fd4);
    _firewallPort = mappedAddr.port;
    // Convert ipv4 address to host byte ordering
    in.s_addr = ntohl (mappedAddr.addr);
    addr = inet_ntoa(in);
    _firewallAddr = std::string(addr);
    _debug("STUN Firewall: [%s:%d]\n", _firewallAddr.data(), _firewallPort);
    return true;
  } else {
    _debug("Opening a stun socket pair failed\n");
  }
  return false;
}

bool
ManagerImpl::behindNat(const std::string& svr, int port)
{
  StunAddress4 stunSvrAddr;
  stunSvrAddr.addr = 0;
  
  // Convert char* to StunAddress4 structure
  bool ret = stunParseServerName ((char*)svr.data(), stunSvrAddr);
  if (!ret) {
    _debug("SIP: Stun server address (%s) is not valid\n", svr.data());
    return 0;
  }
  
  // Firewall address