release/src/router/libvorbis/lib/lpc.h

   1 /********************************************************************
   2  *                                                                  *
   3  * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
   4  * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
   5  * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
   6  * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
   7  *                                                                  *
   8  * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
   9  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13   function: LPC low level routines
  14   last mod: $Id: lpc.h 16037 2009-05-26 21:10:58Z xiphmont $
  15
  16  ********************************************************************/
  17
  18 #ifndef _V_LPC_H_
  19 #define _V_LPC_H_
  20
  21 #include "vorbis/codec.h"
  22
  23 /* simple linear scale LPC code */
  24 extern float vorbis_lpc_from_data(float *data,float *lpc,int n,int m);
  25
  26 extern void vorbis_lpc_predict(float *coeff,float *prime,int m,
  27                                float *data,long n);
  28
  29 #endif