internal static MicActivityEvent FromNative(
     CDOMicActivityEvent micActivityEvnt)
 {
     MicActivityEvent result = new MicActivityEvent();
     result._activity = micActivityEvnt.activity;
     return result;
 }
 private void on_mic_activity_callback_t(IntPtr opaque,
     ref CDOMicActivityEvent e)
 {
     try
     {
         if (_listener != null)
             _listener.onMicActivity(
                 MicActivityEvent.FromNative(e));
     }
     catch (Exception )
     {
     }
 }