public static async Task <T> ActivateAudioInterfaceAsync <T>(string deviceInterfacePath)
{
ActivateAudioInterfaceCompletionHandler <T> activationHandler = new ActivateAudioInterfaceCompletionHandler <T>();
ActivateAudioInterfaceAsyncInternal(deviceInterfacePath, typeof(T).GUID, IntPtr.Zero, activationHandler, out _);
return(await activationHandler);
}
private async Task <IAudioClient2> Activate()
{
ActivateAudioInterfaceCompletionHandler activateCompletionHandler = new ActivateAudioInterfaceCompletionHandler(
audioClient2 =>
{
this.InitializeCaptureDevice(audioClient2);
});
Guid IID_IAudioClient2 = new Guid("726778CD-F60A-4eda-82DE-E47610CD78AA");
IActivateAudioInterfaceAsyncOperation activationOperation;
// This call must be made on the main UI thread.
NativeMethods.ActivateAudioInterfaceAsync(this.device, IID_IAudioClient2, IntPtr.Zero, activateCompletionHandler, out activationOperation);
return(await activateCompletionHandler.GetTask());
}
private static IAudioEndpointVolume GetAudioEndpointVolumeInterface()
{
var speakerId = MediaDevice.GetDefaultAudioRenderId(AudioDeviceRole.Default);
var completionHandler = new ActivateAudioInterfaceCompletionHandler <IAudioEndpointVolume>();
var hr = ActivateAudioInterfaceAsync(
speakerId,
typeof(IAudioEndpointVolume).GetTypeInfo().GUID,
IntPtr.Zero,
completionHandler,
out var activateOperation);
Debug.Assert(hr == (uint)HResult.S_OK);
return(completionHandler.WaitForCompletion());
}
/// <summary>
/// Create, activate and initialize the AudioClient
/// </summary>
/// <returns></returns>
private async Task Activate()
{
this.EventWriterDLL.BuildLine("+2 start => WasapiOutRT::Activate => starting");
var activateCompletionHandler = new ActivateAudioInterfaceCompletionHandler(
(audioClient2) =>
{
this.InitializeAudio(audioClient2);
});
this.EventWriterDLL.BuildLine("+3 start => WasapiOutRT::Activate => getting default audio stream");
var IID_IAudioClient2 = new Guid("726778CD-F60A-4eda-82DE-E47610CD78AA");
IActivateAudioInterfaceAsyncOperation activationOperation;
NativeMethods.ActivateAudioInterfaceAsync(this.device, IID_IAudioClient2, IntPtr.Zero, activateCompletionHandler, out activationOperation);
await activateCompletionHandler.GetTask();
this.EventWriterDLL.BuildLine("+5 start => WasapiOutRT::Activate => creating AudioClient");
}
