root/contributed_modules/modules/extaudio/functions.inc.php

<?php

// The destinations this module provides
// returns a associative arrays with keys 'destination' and 'description'
function extaudio_destinations() {
  //static destinations
  $extens = array();
  $extens[] = array('destination' => 'app-extaudio,audioout,1', 'description' => 'Ext Audio Out');

  if (isset($extens))
    return $extens;
  else
    return null;

}

/*  Generates dialplan for "extaudio" components
  We call this with retrieve_conf
*/
function extaudio_get_config($engine) {

  global $ext;
  switch($engine) {
    case "asterisk":

// Volume settings

      $sql = "SELECT value FROM extaudio WHERE variable = 'lineoutvol'";
      $result = sql($sql,"getRow",DB_FETCHMODE_ASSOC);
      $lineoutvol = $result['value'];
      if (!isset($lineoutvol)) {
              echo("Warning - No lineoutvol setting\n");
              $lineoutvol = 50;
              }
      $command = "amixer set Master " . $lineoutvol . "% unmute";
      exec($command,$output,$status);
      if ($status) {echo($output);}


      $sql = "SELECT value FROM extaudio WHERE variable = 'capturevol'";
      $result = sql($sql,"getRow",DB_FETCHMODE_ASSOC);
      $capturevol = $result['value'];
      if (!isset($capturevol)) {
              echo("Warning - No capturevol setting\n");
              $capturevol = 50;
              }

      //capture volume seems to cause distortion above 25%
      $reducedcapturevol = $capturevol / 4;

      $command = "amixer set Capture " . $reducedcapturevol . "% unmute";
      exec($command,$output,$status);
      if ($status) {echo($output);}


      $sql = "SELECT value FROM extaudio WHERE variable = 'pagingvol'";
      $result = sql($sql,"getRow",DB_FETCHMODE_ASSOC);
      $pagingvol = $result['value'];
      if (!isset($pagingvol)) {
              echo("Warning - No pagingvol setting\n");
              $pagingvol = 100;
              }
      $command = "amixer set PCM " . $pagingvol . "% unmute";
      exec($command,$output,$status);
      if ($status) {echo($output);}


      $sql = "SELECT value FROM extaudio WHERE variable = 'muzakvol'";
      $result = sql($sql,"getRow",DB_FETCHMODE_ASSOC);
      $muzakvol = $result['value'];
      if (!isset($muzakvol)) {
              echo("Warning - No muzakvol setting\n");
              $muzakvol = 100;
              }
      $command = "amixer set Line " . $muzakvol . "% unmute cap";
      exec($command,$output,$status);
      if ($status) {echo($output);}

      $pagingmuzak = "/usr/bin/amixer set Line 0% unmute cap";
      $nopagingmuzak = "/usr/bin/amixer set Line " . $muzakvol . "% unmute cap";


// "extaudio" destinations
      $ext->add('app-extaudio', 'audioout', '', new ext_noop('External Audio Out'));
      $ext->add('app-extaudio', 'audioout', '', new ext_ringing());
      $ext->add('app-extaudio', 'audioout', '', new ext_wait(1));
      $ext->add('app-extaudio', 'audioout', '', new ext_playback(public_address_system));
      $ext->add('app-extaudio', 'audioout', '', new ext_playback(beep));
      $ext->add('app-extaudio', 'audioout', '', new ext_system($pagingmuzak));
      $ext->add('app-extaudio', 'audioout', '', new ext_dial("console/dsp,20,A(beep)"));
      $ext->add('app-extaudio', 'h', '', new ext_noop('Hungup so returning to normal extaudio settings'));
      $ext->add('app-extaudio', 'h', '', new ext_system($nopagingmuzak));
      $ext->add('app-extaudio', 'h', '', new ext_hangup());

  break;
  }
}



?>