kiss_fft.c File Reference

#include "_kiss_fft_guts.h"
#include "arch.h"
#include "os_support.h"
#include "mathops.h"
#include "stack_alloc.h"

Functions
void	opus_fft_impl (const kiss_fft_state *st, kiss_fft_cpx *fout)
void	opus_fft_c (const kiss_fft_state *st, const kiss_fft_cpx *fin, kiss_fft_cpx *fout)
void	opus_ifft_c (const kiss_fft_state *st, const kiss_fft_cpx *fin, kiss_fft_cpx *fout)

Function Documentation

opus_fft_c()

void opus_fft_c	(	const kiss_fft_state *	cfg,
		const kiss_fft_cpx *	fin,
		kiss_fft_cpx *	fout
	)

opus_fft(cfg,in_out_buf)

Perform an FFT on a complex input buffer. for a forward FFT, fin should be f[0] , f[1] , ... ,f[nfft-1] fout will be F[0] , F[1] , ... ,F[nfft-1] Note that each element is complex and can be accessed like f[k].r and f[k].i

opus_fft_impl()

void opus_fft_impl	(	const kiss_fft_state *	st,
		kiss_fft_cpx *	fout
	)

opus_ifft_c()

void opus_ifft_c	(	const kiss_fft_state *	st,
		const kiss_fft_cpx *	fin,
		kiss_fft_cpx *	fout
	)