gecko/media/libvorbis/lib/smallft.h
Matthew Gregan 846b228dbb Bug 501279. Update libvorbis to r16335.
--HG--
extra : rebase_source : 04d15a3e154054fe00b3c01f3c252f5f9613e3e8
2009-07-31 17:24:16 +12:00

35 lines
1.3 KiB
C

/********************************************************************
* *
* 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 1994-2007 *
* by the Xiph.Org Foundation http://www.xiph.org/ *
* *
********************************************************************
function: fft transform
last mod: $Id: smallft.h 13293 2007-07-24 00:09:47Z xiphmont $
********************************************************************/
#ifndef _V_SMFT_H_
#define _V_SMFT_H_
#include "vorbis/codec.h"
typedef struct {
int n;
float *trigcache;
int *splitcache;
} drft_lookup;
extern void drft_forward(drft_lookup *l,float *data);
extern void drft_backward(drft_lookup *l,float *data);
extern void drft_init(drft_lookup *l,int n);
extern void drft_clear(drft_lookup *l);
#endif