/// <summary>
/// Get the available audio input devices.
/// Thought that would be trivial shit, but this wasn't.
/// - We use NAudio to record the audio
/// - NAudio has its own audio device index
/// - NAudio can't get the full device name because of a M$ limitation
/// - So we use MMDevice instead to enumerate them devices
/// - However their order/index is different
/// - But they have a full device name
/// - And also they have the proper number of audio channels
/// - And basically MMDevice has more stuff in there
/// - So we use a MMDevice list of the available devices
/// - But we order them using the NAudio index
/// Also note that the use of MMDevice is only okay for Win Vista+ OSes.
/// No XP here because of that...
/// </summary>
/// <returns>A list of the available audio devices ordered by NAudio device index.</returns>
private static IList <MMDevice> GetAudioInputDevices()
{
Info("Detected input devices: {0}", WaveIn.DeviceCount);
// Enumerates audio input devices using MMDevice
var devices = new MMDevice[WaveIn.DeviceCount];
var enumerator = new MMDeviceEnumerator();
foreach (var deviceInfo in enumerator.EnumerateAudioEndPoints(DataFlow.Capture, DeviceState.Active))
{
// MMDevice has the full product name in that property
var fullProductName = deviceInfo.FriendlyName;
// Find this device's Index for NAudio's WaveIn
var naudioIndex = 0;
for (var waveInDeviceIndex = 0; waveInDeviceIndex < WaveIn.DeviceCount; waveInDeviceIndex++)
{
// WaveIn only has 32bits product name lenght
var partialProductName = WaveIn.GetCapabilities(waveInDeviceIndex).ProductName;
// Okay, same device, so we grab NAudio's index
if (fullProductName.StartsWith(partialProductName))
{
naudioIndex = waveInDeviceIndex;
break;
}
}
Info("{0}:{1}, {2} channels", naudioIndex, deviceInfo.FriendlyName,
deviceInfo.AudioEndpointVolume.Channels.Count);
devices[naudioIndex] = deviceInfo;
}
return(devices.ToList());
}
