mdct.h File Reference

#include "opus_defines.h"
#include "kiss_fft.h"
#include "arch.h"

Go to the source code of this file.

Classes
struct	mdct_lookup

Macros
#define	clt_mdct_forward(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)   clt_mdct_forward_c(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)
#define	clt_mdct_backward(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)   clt_mdct_backward_c(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)

Functions
int	clt_mdct_init (mdct_lookup *l, int N, int maxshift, int arch)
void	clt_mdct_clear (mdct_lookup *l, int arch)
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)

Macro Definition Documentation

clt_mdct_backward

#define clt_mdct_backward	(		_l,
			_in,
			_out,
			_window,
			_overlap,
			_shift,
			_stride,
			_arch
	)		clt_mdct_backward_c(_l, _in, _out, _window, _overlap, _shift, _stride, _arch)

clt_mdct_forward

#define clt_mdct_forward	(		_l,
			_in,
			_out,
			_window,
			_overlap,
			_shift,
			_stride,
			_arch
	)		clt_mdct_forward_c(_l, _in, _out, _window, _overlap, _shift, _stride, _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_clear()

void clt_mdct_clear	(	mdct_lookup *	l,
		int	arch
	)

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

clt_mdct_init()

int clt_mdct_init	(	mdct_lookup *	l,
		int	N,
		int	maxshift,
		int	arch
	)