/// <summary>
/// This is invoked once per second.
/// It looks for new recording devices, such as when a mic is plugged in. If it finds one,
/// it switches the Recorder to use it.
/// It also checks whether the current recording device is still available. If not,
/// it switches to whatever is the current default recording device (unless a new one was found,
/// which takes precedence).
/// The list of RecordingDevice.Devices, at least on Win7 with USB mics, seems to update as things
/// are connected and disconnected.
/// I'm not sure this approach will detect the plugging and unplugging of non-USB mics.
/// </summary>
/// <remarks>We compare product names rather than actual devices, because it appears that
/// RecordingDevices.Devices creates a new list of objects each time; the ones from one call
/// are never equal to the ones from a previous call.</remarks>
/// <param name="sender"></param>
/// <param name="e"></param>
void OnCheckNewMicTimer_Tick(object sender, EventArgs e)
{
if (_recorder == null)
{
return;
}
// Don't try to change horses in the middle of the stream if recording is in progress.
if (_recorder.RecordingState != RecordingState.Monitoring &&
_recorder.RecordingState != RecordingState.Stopped)
{
return;
}
bool foundCurrentDevice = false;
var devices = RecordingDevice.Devices.ToList();
foreach (var device in devices)
{
if (!_knownRecordingDevices.Contains(device.ProductName))
{
_recorder.SelectedDevice = device;
if (_recorder.RecordingState == RecordingState.Monitoring)
{
_knownRecordingDevices.Add(device.ProductName);
UpdateDisplay();
return;
}
}
if (_recorder.SelectedDevice != null && device.ProductName ==
_recorder.SelectedDevice.ProductName)
{
foundCurrentDevice = true;
}
}
if (foundCurrentDevice)
{
if (_recorder.RecordingState != RecordingState.Monitoring)
{
_recorder.BeginMonitoring();
if (_recorder.RecordingState == RecordingState.Monitoring)
{
UpdateDisplay();
}
}
}
else
{
// presumably unplugged...try to switch to another.
var defaultDevice = devices.FirstOrDefault();
if (defaultDevice != _recorder.SelectedDevice)
{
_recorder.SelectedDevice = defaultDevice;
UpdateDisplay();
}
}
// Update the list so one that was never active can be made active by unplugging and replugging
SetKnownRecordingDevices(devices);
}
private void BeginMonitoring(int recordingDevice)
{
//recorder.BeginMonitoring(recordingDevice);
//RaisePropertyChanged("MicrophoneLevel");
//recorder.BeginMonitoring(1);
//recorder2.BeginMonitoring(3);
recorder.BeginMonitoring(recordingDevice);
//recorder2.BeginMonitoring(recordingDevice);
RaisePropertyChanged("MicrophoneLevel");
}
private static void BeginMonitoring(int recordingDevice)
{
recorder.BeginMonitoring(recordingDevice);
}
public void Start()
{
Init(_config);
_audioRecorder.BeginMonitoring(_config.InputDevice);
}
private void BeginMonitoring2(int recordingDevice2)
{
recorder2.BeginMonitoring(recordingDevice2);
RaisePropertyChanged("MicrophoneLevel2");
}