Module fft 

Structs

FFTConfig

Configuration for FFT processing.

FFTProcessor

Enums

FFTDirection

FFT direction (forward or inverse transform).

Functions

fft_1d_rows

Compute 1D FFT magnitude for each row of a 2D array using rustfft. Returns a Float64 array with half the padded width (positive frequencies only). Like C++ NDPluginFFT, each row is zero-padded to the next power of two before the transform, and nFreqX = paddedWidth / 2. Magnitudes are normalized by the padded length.

fft_2d

Compute 2D FFT magnitude using separable row-then-column FFT via rustfft.

next_pow2

Smallest power of two greater than or equal to n (C++ nextPow2).