vrshoot

annotate libs/vorbis/smallft.h @ 2:334d17aed7de

visual studio project files
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 02 Feb 2014 18:36:38 +0200
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nuclear@0 1 /********************************************************************
nuclear@0 2 * *
nuclear@0 3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
nuclear@0 4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
nuclear@0 5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
nuclear@0 6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
nuclear@0 7 * *
nuclear@0 8 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007 *
nuclear@0 9 * by the Xiph.Org Foundation http://www.xiph.org/ *
nuclear@0 10 * *
nuclear@0 11 ********************************************************************
nuclear@0 12
nuclear@0 13 function: fft transform
nuclear@0 14 last mod: $Id: smallft.h 13293 2007-07-24 00:09:47Z xiphmont $
nuclear@0 15
nuclear@0 16 ********************************************************************/
nuclear@0 17
nuclear@0 18 #ifndef _V_SMFT_H_
nuclear@0 19 #define _V_SMFT_H_
nuclear@0 20
nuclear@0 21 #include "vorbis/codec.h"
nuclear@0 22
nuclear@0 23 typedef struct {
nuclear@0 24 int n;
nuclear@0 25 float *trigcache;
nuclear@0 26 int *splitcache;
nuclear@0 27 } drft_lookup;
nuclear@0 28
nuclear@0 29 extern void drft_forward(drft_lookup *l,float *data);
nuclear@0 30 extern void drft_backward(drft_lookup *l,float *data);
nuclear@0 31 extern void drft_init(drft_lookup *l,int n);
nuclear@0 32 extern void drft_clear(drft_lookup *l);
nuclear@0 33
nuclear@0 34 #endif