1 /********************************************************************
3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS SOURCE IS GOVERNED BY *
5 * THE GNU LESSER/LIBRARY PUBLIC LICENSE, WHICH IS INCLUDED WITH *
6 * THIS SOURCE. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
8 * THE OggVorbis 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: PCM data envelope analysis and manipulation
15 last mod: $Id: envelope.h,v 1.11 2000/11/06 00:07:00 xiphmont Exp $
17 ********************************************************************/
42 extern void _ve_envelope_init(envelope_lookup *e,vorbis_info *vi);
43 extern void _ve_envelope_clear(envelope_lookup *e);
44 extern long _ve_envelope_search(vorbis_dsp_state *v,long searchpoint);
45 extern void _ve_envelope_shift(envelope_lookup *e,long shift);