/// <summary>
/// Initializes the engine callback.
/// </summary>
private void InitializeEngineCallback()
{
//register an object for receiving engine callbacks
if (_engineCallback == null)
{
_engineCallback = new XAudio2EngineCallback();
RegisterForCallbacks(_engineCallback);
}
}
public void CanRegisterEngineCallback()
{
const int lengthInSeconds = 2;
bool b0 = false, b1 = false;
XAudio2EngineCallback engineCallback = new XAudio2EngineCallback();
engineCallback.ProcessingPassStart += (s, e) =>
b0 = true;
engineCallback.ProcessingPassEnd += (s, e) =>
b1 = true;
_xaudio2.RegisterForCallbacks(engineCallback);
using (var masteringVoice = _xaudio2.CreateMasteringVoice())
using (var sourceVoice = _xaudio2.CreateSourceVoice(_source.WaveFormat))
{
byte[] rawBuffer = new byte[_source.WaveFormat.BytesPerSecond * lengthInSeconds];
int read = _source.Read(rawBuffer, 0, rawBuffer.Length);
var buffer = new XAudio2Buffer(read);
using (var stream = buffer.GetStream())
{
stream.Write(rawBuffer, 0, read);
}
sourceVoice.SubmitSourceBuffer(buffer);
sourceVoice.Start();
Thread.Sleep((lengthInSeconds * 1000 + 500) / 2);
Assert.IsTrue(b0 || b1);
Console.WriteLine("Unregistered");
_xaudio2.UnregisterForCallbacks(engineCallback);
b0 = b1 = false;
Thread.Sleep((lengthInSeconds * 1000 + 500) / 4);
Assert.IsFalse(b0 && b1);
Console.WriteLine("Register");
_xaudio2.RegisterForCallbacks(engineCallback);
Thread.Sleep((lengthInSeconds * 1000 + 500) / 4);
Assert.IsTrue(b0 || b1);
}
_xaudio2.UnregisterForCallbacks(engineCallback);
}
/// <summary>
/// Initializes the engine callback.
/// </summary>
private void InitializeEngineCallback()
{
//register an object for receiving engine callbacks
if (_engineCallback == null)
{
_engineCallback = new XAudio2EngineCallback();
RegisterForCallbacks(_engineCallback);
}
}
