1 /********************************************************************
3 * THIS FILE IS PART OF THE Ogg Vorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU PUBLIC LICENSE 2, WHICH IS INCLUDED WITH THIS SOURCE. *
6 * PLEASE READ THESE TERMS DISTRIBUTING. *
8 * THE OggSQUISH SOURCE CODE IS (C) COPYRIGHT 1994-2000 *
9 * by Monty <monty@xiph.org> and The XIPHOPHORUS Company *
10 * http://www.xiph.org/ *
12 ********************************************************************
14 function: spectrum envelope and residue code/decode
15 last mod: $Id: spectrum.h,v 1.4 2000/01/04 09:05:04 xiphmont Exp $
17 ********************************************************************/
22 extern int _vs_spectrum_encode(vorbis_block *vb,double amp,double *lsp);
23 extern int _vs_spectrum_decode(vorbis_block *vb,double *amp,double *lsp);
24 extern void _vs_residue_quantize(double *data,double *curve,
25 vorbis_info *vi,int n);
26 extern int _vs_residue_encode(vorbis_block *vb,double *data);
27 extern int _vs_residue_decode(vorbis_block *vb,double *data);
29 extern void _vs_residue_train(vorbis_block *vb,double *data,double *curve,