Blame lib/smallft.h

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/********************************************************************
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 *                                                                  *
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 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
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 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
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 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
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 *                                                                  *
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 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
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 * by the Xiph.Org Foundation http://www.xiph.org/                  *
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 *                                                                  *
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 ********************************************************************
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 function: fft transform
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 last mod: $Id: smallft.h 13293 2007-07-24 00:09:47Z xiphmont $
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 ********************************************************************/
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#ifndef _V_SMFT_H_
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#define _V_SMFT_H_
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#include "vorbis/codec.h"
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typedef struct {
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  int n;
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  float *trigcache;
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  int *splitcache;
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} drft_lookup;
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extern void drft_forward(drft_lookup *l,float *data);
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extern void drft_backward(drft_lookup *l,float *data);
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extern void drft_init(drft_lookup *l,int n);
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extern void drft_clear(drft_lookup *l);
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#endif