/// <summary>
/// Returns a list of the system's enabled audio output devices. Returns null if no enabled audio output devices are present. See also: Player.Audio.DeviceCount and Player.Audio.GetDefaultDevice.
/// </summary>
public AudioDevice[] GetDevices()
{
AudioDevice[] audioDevices = null;
_base._lastError = HResult.MF_E_NO_AUDIO_PLAYBACK_DEVICE;
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
deviceEnumerator.EnumAudioEndpoints(EDataFlow.eRender, (uint)DeviceState.Active, out IMMDeviceCollection deviceCollection);
Marshal.ReleaseComObject(deviceEnumerator);
if (deviceCollection != null)
{
deviceCollection.GetCount(out uint count);
if (count > 0)
{
audioDevices = new AudioDevice[count];
for (int i = 0; i < count; i++)
{
audioDevices[i] = new AudioDevice();
deviceCollection.Item((uint)i, out IMMDevice device);
Player.GetDeviceInfo(device, audioDevices[i]);
Marshal.ReleaseComObject(device);
}
_base._lastError = Player.NO_ERROR;
}
Marshal.ReleaseComObject(deviceCollection);
}
return(audioDevices);
}
/// <summary>
/// Returns the system's default audio output device. Returns null if no default audio output device is present. See also: Player.Audio.GetDevices.
/// </summary>
public AudioDevice GetDefaultDevice()
{
AudioDevice audioDevice = null;
IMMDeviceEnumerator deviceEnumerator = (IMMDeviceEnumerator) new MMDeviceEnumerator();
deviceEnumerator.GetDefaultAudioEndpoint(EDataFlow.eRender, ERole.eMultimedia, out IMMDevice device);
Marshal.ReleaseComObject(deviceEnumerator);
if (device != null)
{
audioDevice = new AudioDevice();
Player.GetDeviceInfo(device, audioDevice);
Marshal.ReleaseComObject(device);
_base._lastError = Player.NO_ERROR;
}
else
{
_base._lastError = HResult.MF_E_NO_AUDIO_PLAYBACK_DEVICE;
}
return(audioDevice);
}
