protected override void OnSettingsChanged(SettingsChangedEventArgs e)
{
if (settings.InputDataDimensions <= 0)
{
throw new ArgumentException("The dimensions of the moving average must be 1 or more.", "InputDataDimensions");
}
valuesToAverage = new float[settings.InputDataDimensions][];
for (int j = 0; j < settings.InputDataDimensions; j++)
{
valuesToAverage[j] = new float[settings.MovingAverageLength];
}
}
protected override void OnSettingsChanged(SettingsChangedEventArgs e)
{
valuesToMeasure = new float[settings.SampleCount];
}
protected override void OnSettingsChanged(SettingsChangedEventArgs e)
{
while (isProcessing)
{
Thread.Sleep(100);
}
int n = settings.FFTSampleCount;
timeDomainData = new float[settings.FFTSampleCount];
frequencyDomainData = new float[settings.FFTSampleCount];
// n*2 because we are dealing with complex numbers
complexInput = new float[n * 2];
complexOutput = new float[n * 2];
try
{
mfin = new fftwf_complexarray(complexInput);
mfout = new fftwf_complexarray(complexOutput);
}
catch (DllNotFoundException)
{
Console.WriteLine("DllNotFoundException: You must copy the native FFTW DLLs (libfftw3-3.dll, libfftw3f-3.dll, libfftw3l-3.dll) into the working directory.");
throw;
}
catch (BadImageFormatException)
{
Console.WriteLine("BadImageFormatException: This normally means, that you're loading a 32bit DLL into a 64bit process or vice versa.");
throw;
}
plan = fftwf_plan.dft_1d(n, mfin, mfout,
settings.IsBackward ? fftw_direction.Backward : fftw_direction.Forward,
settings.PlanningRigor == FFTPlanningRigor.Estimate ? fftw_flags.Estimate :
settings.PlanningRigor == FFTPlanningRigor.Measure ? fftw_flags.Measure :
settings.PlanningRigor == FFTPlanningRigor.Patient ? fftw_flags.Patient :
fftw_flags.Estimate);
switch (settings.OutputFormat)
{
case FFTOutputFormat.Raw:
this.OutputBlockSize = settings.FFTSampleCount * 2;
break;
case FFTOutputFormat.RealImaginaryPair:
this.OutputBlockSize = settings.FFTSampleCount;
break;
case FFTOutputFormat.RealOnly:
this.OutputBlockSize = settings.FFTSampleCount / 2;
break;
case FFTOutputFormat.Magnitude:
this.OutputBlockSize = settings.FFTSampleCount / 2;
break;
case FFTOutputFormat.FrequencyMagnitudePair:
this.OutputBlockSize = settings.FFTSampleCount;
break;
default:
throw new ArgumentException("The FFT's output format is not supported.", "FFTOutputFormat");
}
}
protected virtual void OnSettingsChanged(SettingsChangedEventArgs e)
{
SettingsChanged?.Invoke(this, e);
}
