48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/********************************************************************
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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 1994-2001 *
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* by the XIPHOPHORUS Company 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,v 1.3 2003/09/16 18:35:45 jm Exp $
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********************************************************************/
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/**
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@file adp_filter.h
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@brief Discrete Rotational Fourier Transform (DRFT)
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*/
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#ifndef _ADP_FILTER_H_
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#define _ADP_FILTER_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include "adp_config.h"
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struct adpparam
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{
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void *fft_lookup;
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int M;
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float w_fft[ADPFILTER_NUM*2];
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float w[ADPFILTER_NUM*2];
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float u;
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};
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extern void lms_block_fft(short *in, short *dest, short *out, struct adpparam *param,int upadat_flag);
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extern void *adp_filter_init(int size);
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#ifdef __cplusplus
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}
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#endif
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#endif
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