1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
9 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: modified discrete cosine transform prototypes
15 last mod: $Id: mdct.h,v 1.8 1999/12/30 07:26:45 xiphmont Exp $
17 ********************************************************************/
24 extern void mdct_init(mdct_lookup *lookup,int n);
25 extern void mdct_clear(mdct_lookup *l);
26 extern void mdct_forward(mdct_lookup *init, double *in,
27 double *out, double *window);
28 extern void mdct_backward(mdct_lookup *init, double *in,
29 double *out, double *window);