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 1994-1999 *
9 * by 1999 Monty and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: modified discrete cosine transform prototypes
16 ********************************************************************/
23 extern void mdct_init(mdct_lookup *lookup,int n);
24 extern void mdct_clear(mdct_lookup *l);
25 extern void mdct_forward(mdct_lookup *init, double *in,
26 double *out, double *window);
27 extern void mdct_backward(mdct_lookup *init, double *in,
28 double *out, double *window);