public IFFTPullBuffer(SigParam <double[]> fftDataReal, SigParam <double[]> fftDataImag, int size, WindowFunction window)
: base(size)
{
FFFTDataReal = fftDataReal;
FFFTDataImag = fftDataImag;
RealImagData = new double[size];
TimeDomain = new float[size];
Window = AudioUtils.CreateWindowDouble(size, window);
WindowFunc = window;
PullCount = size;
}
protected override void FillBuffer(float[] buffer, int offset, int count)
{
if (InputSignal.Value != null)
{
InputSignal.Read(buffer, offset, count);
//write to buffer
FRingBuffer.Write(buffer, offset, count);
//calc fft
var fftSize = FRingBuffer.Size;
if (FFFTBuffer.Length != fftSize)
{
FFFTBuffer = new double[fftSize];
FFTOut = new double[fftSize];
FWindow = AudioUtils.CreateWindowDouble(fftSize, WindowFunc);
}
FRingBuffer.ReadDoubleWindowed(FFFTBuffer, FWindow, 0, fftSize);
FFFT.RealFFT(FFFTBuffer, true);
Array.Copy(FFFTBuffer, FFTOut, fftSize);
}
}