public void StartStream()
{
if (StreamState != StreamState.Open)
{
throw new Exception("Trying to Start a stream that does not have State: Open. State is " + StreamState.ToString());
}
var err = PortAudio.Pa_StartStream(Config.Stream);
if (err != PortAudio.PaError.paNoError)
{
throw new Exception(PortAudio.Pa_GetErrorText(err));
}
StreamState = StreamState.Started;
}
public void CloseStream()
{
if (StreamState != StreamState.Stopped)
{
throw new Exception("Trying to Close a stream that does not have State: Stopped. State is " + StreamState.ToString());
}
if (Config == null)
{
return;
}
var err = PortAudio.Pa_CloseStream(Config.Stream);
if (err != PortAudio.PaError.paNoError)
{
throw new Exception(PortAudio.Pa_GetErrorText(err));
}
StreamState = StreamState.Closed;
}
public void OpenStream()
{
if (Config == null)
{
throw new Exception("Configuration settings have not been applied. You must first configure the host");
}
if (StreamState != StreamState.Closed)
{
throw new Exception("Trying to Open a stream that does not have State: Closed. State is " + StreamState.ToString());
}
callbackDelegate = RealtimeCallback;
streamFinishedDelegate = StreamFinished;
var err = PortAudio.Pa_OpenStream(
out Config.Stream,
ref Config.inputParameters,
ref Config.outputParameters,
Samplerate,
BufferSize,
(PortAudio.PaStreamFlags.paClipOff | PortAudio.PaStreamFlags.paDitherOff),
callbackDelegate,
new IntPtr(0)
);
if (err != PortAudio.PaError.paNoError)
{
throw new Exception(PortAudio.Pa_GetErrorText(err));
}
err = PortAudio.Pa_SetStreamFinishedCallback(Config.Stream, streamFinishedDelegate);
if (err != PortAudio.PaError.paNoError)
{
throw new Exception(PortAudio.Pa_GetErrorText(err));
}
StreamState = StreamState.Open;
}