PaStreamCallbackResult SineCallback(
PaBuffer input, PaBuffer output,
int frameCount, PaStreamCallbackTimeInfo timeInfo,
PaStreamCallbackFlags statusFlags, object userData)
{
var outBuffer = (PaBuffer <float>)output;
var outSpan = outBuffer.Span;
if (note >= 0)
{
for (int n = 0; n < frameCount; n++)
{
outSpan[n] = (float)Sin(osc);
osc += delta;
}
osc = osc % (2 * Math.PI);
}
else
{
for (int n = 0; n < frameCount; n++)
{
outSpan[n] = 0; // silence;
}
}
return(PaStreamCallbackResult.paContinue);
}
private static PaStreamCallbackResult SineCallback(
PaBuffer input, PaBuffer output,
int frameCount, PaStreamCallbackTimeInfo timeInfo,
PaStreamCallbackFlags statusFlags, object userData)
{
var data = (SineCallbackData)userData;
var outBuffer = (PaBuffer <float>)output;
var outSpan = outBuffer.Span;
for (int n = 0; n < frameCount; n++)
{
outSpan[n] = 0.1f * (float)data.osc.Real;
data.osc *= data.delta;;
}
data.osc *= (3 - (data.osc.Real * data.osc.Real + data.osc.Imaginary * data.osc.Imaginary)) / 2;
return(PaStreamCallbackResult.paContinue);
}
