mdct.h 1.37 KB
Newer Older
Mike Whitson's avatar
Mike Whitson committed
1 2 3 4 5 6 7
/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE.  *
 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE.    *
 * PLEASE READ THESE TERMS DISTRIBUTING.                            *
 *                                                                  *
Monty's avatar
 
Monty committed
8 9
 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000             *
 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company            *
Mike Whitson's avatar
Mike Whitson committed
10 11 12 13 14
 * http://www.xiph.org/                                             *
 *                                                                  *
 ********************************************************************

 function: modified discrete cosine transform prototypes
Monty's avatar
 
Monty committed
15
 last mod: $Id: mdct.h,v 1.9 2000/01/05 03:11:00 xiphmont Exp $
Mike Whitson's avatar
Mike Whitson committed
16 17 18

 ********************************************************************/

Monty's avatar
 
Monty committed
19 20
#ifndef _OGG_mdct_H_
#define _OGG_mdct_H_
Mike Whitson's avatar
Mike Whitson committed
21

Monty's avatar
 
Monty committed
22
#include "vorbis/codec.h"
Mike Whitson's avatar
Mike Whitson committed
23

Monty's avatar
 
Monty committed
24 25 26 27
extern void mdct_init(mdct_lookup *lookup,int n);
extern void mdct_clear(mdct_lookup *l);
extern void mdct_forward(mdct_lookup *init, double *in, 
			 double *out, double *window);
Monty's avatar
 
Monty committed
28 29
extern void mdct_backward(mdct_lookup *init, double *in, 
			  double *out, double *window);
Mike Whitson's avatar
Mike Whitson committed
30 31 32 33 34 35 36 37 38 39 40 41 42 43

#endif