Struct StreamingFft 

pub struct StreamingFft { /* private fields */ }

Streaming FFT processor.

Samples are pushed incrementally. Once the internal buffer accumulates fft_size samples a magnitude spectrum is emitted; then hop_size samples are consumed from the front of the buffer so that the next frame begins hop_size samples later (overlap = fft_size - hop_size).

Implementations

impl StreamingFft

pub fn new(config: StreamingFftConfig) -> Self

Create a new streaming FFT processor.

Panics

Does not panic; invalid configuration is silently clamped where possible. Callers should validate with StreamingFftConfig fields before calling.

pub fn push(&mut self, samples: &[f64]) -> Vec<Vec<f64>>

Push new samples into the stream.

Returns all completed magnitude spectra generated from the incoming data. Each returned Vec<f64> has length fft_size / 2 + 1 and contains the one-sided magnitude spectrum (DC to Nyquist).

A new frame is emitted every time the internal buffer reaches fft_size samples; hop_size samples are then drained from the front of the buffer so the next frame overlaps by fft_size - hop_size samples.

pub fn flush(&mut self) -> Vec<Vec<f64>>

Flush remaining buffered samples.

Zero-pads the internal buffer to fft_size and emits one spectrum if the buffer is non-empty. Resets the buffer afterwards.

Returns an empty Vec if the buffer is already empty.

pub fn buffered_samples(&self) -> usize

Number of samples currently held in the internal buffer.

pub fn reset(&mut self)

Reset the processor: clear internal buffer and any pending output.