samples/audio/audio.cxx

   1 //
   2 // audio.cxx
   3 //
   4 // Roger Hardiman
   5 //
   6
   7 #include <ptlib.h>
   8
   9 class Audio : public PProcess
  10 {
  11   PCLASSINFO(Audio, PProcess)
  12   public:
  13     void Main();
  14 };
  15
  16 PCREATE_PROCESS(Audio)
  17
  18 void Audio::Main()
  19 {
  20   cout << "Audio Test Program\n";
  21
  22   PSoundChannel::Directions dir;
  23   PStringArray names;
  24
  25   cout << "\n";
  26   cout << "List of Play devices\n";
  27
  28   dir = PSoundChannel::Player;
  29   names = PSoundChannel::GetDeviceNames(dir);
  30   for (PINDEX i = 0; i < names.GetSize(); i++)
  31     cout << "  \"" << names[i] << "\"\n";
  32
  33   cout << "The default play device is \"" << PSoundChannel::GetDefaultDevice(dir) << "\"\n";
  34
  35
  36   cout << "\n";
  37   cout << "List of Record devices\n";
  38
  39   dir = PSoundChannel::Recorder;
  40   names = PSoundChannel::GetDeviceNames(dir);
  41   for (PINDEX i = 0; i < names.GetSize(); i++)
  42     cout << "  \"" << names[i] << "\"\n";
  43
  44   cout << "The default record device is \"" << PSoundChannel::GetDefaultDevice(dir) << "\"\n";
  45
  46   cout << "\n";
  47
  48
  49   // Display the mixer settings for the default devices
  50   PSoundChannel sound;
  51   dir = PSoundChannel::Player;
  52   sound.Open(PSoundChannel::GetDefaultDevice(dir),dir);
  53
  54   unsigned int vol;
  55   if (sound.GetVolume(vol))
  56     cout << "Play volume is " << vol << endl;
  57   else
  58     cout << "Play volume cannot be obtained" << endl;
  59
  60   sound.Close();
  61
  62   dir = PSoundChannel::Recorder;
  63   sound.Open(PSoundChannel::GetDefaultDevice(dir),dir);
  64
  65   if (sound.GetVolume(vol))
  66     cout << "Record volume is " << vol << endl;
  67   else
  68     cout << "Record volume cannot be obtained" << endl;
  69
  70   sound.Close();
  71 }
  72
  73 // End of hello.cxx