godot/thirdparty/libvorbis/envelope.h

/********************************************************************
 *                                                                  *
 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
 *                                                                  *
 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *
 * by the Xiph.Org Foundation https://xiph.org/                     *
 *                                                                  *
 ********************************************************************

 function: PCM data envelope analysis and manipulation

 ********************************************************************/

#ifndef _V_ENVELOPE_
#define _V_ENVELOPE_

#include "mdct.h"

#define VE_PRE …
#define VE_WIN …
#define VE_POST …
#define VE_AMP …

#define VE_BANDS …
#define VE_NEARDC …

#define VE_MINSTRETCH …
#define VE_MAXSTRETCH …

envelope_filter_state;

envelope_band;

envelope_lookup;

extern void _ve_envelope_init(envelope_lookup *e,vorbis_info *vi);
extern void _ve_envelope_clear(envelope_lookup *e);
extern long _ve_envelope_search(vorbis_dsp_state *v);
extern void _ve_envelope_shift(envelope_lookup *e,long shift);
extern int  _ve_envelope_mark(vorbis_dsp_state *v);


#endif