diff options
Diffstat (limited to 'lib/mdct.h')
| -rw-r--r-- | lib/mdct.h | 79 |
1 files changed, 0 insertions, 79 deletions
diff --git a/lib/mdct.h b/lib/mdct.h deleted file mode 100644 index d2810deb..00000000 --- a/lib/mdct.h +++ /dev/null @@ -1,79 +0,0 @@ -/******************************************************************** - * * - * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. * - * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS * - * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE * - * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. * - * * - * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001 * - * by the XIPHOPHORUS Company http://www.xiph.org/ * - - ******************************************************************** - - function: modified discrete cosine transform prototypes - last mod: $Id: mdct.h,v 1.18 2001/02/26 03:50:42 xiphmont Exp $ - - ********************************************************************/ - -#ifndef _OGG_mdct_H_ -#define _OGG_mdct_H_ - -#include "vorbis/codec.h" - -/*#define MDCT_INTEGERIZED <- be warned there could be some hurt left here*/ -#ifdef MDCT_INTEGERIZED - -#define DATA_TYPE int -#define REG_TYPE register int -#define TRIGBITS 14 -#define cPI3_8 6270 -#define cPI2_8 11585 -#define cPI1_8 15137 - -#define FLOAT_CONV(x) ((int)((x)*(1<<TRIGBITS)+.5)) -#define MULT_NORM(x) ((x)>>TRIGBITS) -#define HALVE(x) ((x)>>1) - -#else - -#define DATA_TYPE float -#define REG_TYPE float -#define cPI3_8 .38268343236508977175F -#define cPI2_8 .70710678118654752441F -#define cPI1_8 .92387953251128675613F - -#define FLOAT_CONV(x) (x) -#define MULT_NORM(x) (x) -#define HALVE(x) ((x)*.5f) - -#endif - - -typedef struct { - int n; - int log2n; - - DATA_TYPE *trig; - int *bitrev; - - DATA_TYPE scale; -} mdct_lookup; - -extern void mdct_init(mdct_lookup *lookup,int n); -extern void mdct_clear(mdct_lookup *l); -extern void mdct_forward(mdct_lookup *init, DATA_TYPE *in, DATA_TYPE *out); -extern void mdct_backward(mdct_lookup *init, DATA_TYPE *in, DATA_TYPE *out); - -#endif - - - - - - - - - - - - |