release/src/router/libvorbis/lib/lsp.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 1994-2009             *
   9  * by the Xiph.Org Foundation http://www.xiph.org/                  *
  10  *                                                                  *
  11  ********************************************************************
  12
  13   function: LSP (also called LSF) conversion routines
  14   last mod: $Id: lsp.h 16227 2009-07-08 06:58:46Z xiphmont $
  15
  16  ********************************************************************/
  17
  18
  19 #ifndef _V_LSP_H_
  20 #define _V_LSP_H_
  21
  22 extern int vorbis_lpc_to_lsp(float *lpc,float *lsp,int m);
  23
  24 extern void vorbis_lsp_to_curve(float *curve,int *map,int n,int ln,
  25                                 float *lsp,int m,
  26                                 float amp,float ampoffset);
  27
  28 #endif