public unsafe void updateData(Complex *c, int length)
{
FFTWComplex *id = (FFTWComplex *)_input;
if (length != _bins)
{
Console.WriteLine("Warning! Reallocing SFFT!");
realloc(length);
}
for (int i = 0; i < length; i++)
{
id[i].imag = c[i].imag;
id[i].real = c[i].real;
}
}
public unsafe void copyOutput(Complex *c, int length)
{
FFTWComplex *od = (FFTWComplex *)_output;
if (length != _bins)
{
Console.WriteLine("Warning! Reallocing SFFT!");
realloc(length);
}
int middle = _bins / 2;
// FFTW have DC (Zero-Frequency) at the left corner (od[0]). But the SDR Expects a symmetric FFT with the DC in the center.
for (int i = 0; i < middle; i++)
{
// Lower
c[i].imag = (float)od[middle + i].imag;
c[i].real = (float)od[middle + i].real;
// Upper
c[middle + i].imag = (float)od[i].imag;
c[middle + i].real = (float)od[i].real;
}
}
