mdct.c File Reference

#include "mdct.h"
#include "kiss_fft.h"
#include "_kiss_fft_guts.h"
#include <math.h>
#include "os_support.h"
#include "mathops.h"
#include "stack_alloc.h"

Functions
void	clt_mdct_forward_c (const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scalar *OPUS_RESTRICT out, const opus_val16 *window, int overlap, int shift, int stride, int arch)
void	clt_mdct_backward_c (const mdct_lookup *l, kiss_fft_scalar *in, kiss_fft_scalar *OPUS_RESTRICT out, const opus_val16 *OPUS_RESTRICT window, int overlap, int shift, int stride, int arch)

Function Documentation

clt_mdct_backward_c()

void clt_mdct_backward_c	(	const mdct_lookup *	l,
		kiss_fft_scalar *	in,
		kiss_fft_scalar *OPUS_RESTRICT	out,
		const opus_val16 *OPUS_RESTRICT	window,
		int	overlap,
		int	shift,
		int	stride,
		int	arch
	)

Compute a backward MDCT (no scaling) and performs weighted overlap-add (scales implicitly by 1/2)

clt_mdct_forward_c()

void clt_mdct_forward_c	(	const mdct_lookup *	l,
		kiss_fft_scalar *	in,
		kiss_fft_scalar *OPUS_RESTRICT	out,
		const opus_val16 *	window,
		int	overlap,
		int	shift,
		int	stride,
		int	arch
	)

Compute a forward MDCT and scale by 4/N, trashes the input array