995dcb610c
Took the opportunity to undo the Godot changed made to the
opus source. The opus module should eventually be built in its
own environment to avoid polluting others with too many include
dirs and defines.
TODO: Fix the platform/ stuff for opus.
(cherry picked from commit d9a291f641)
speex module was only added while cherry-picking, as speex is removed
in the master branch but we don't want to break compatibility in 2.1.x.
Unbundling wasn't done as the module uses the internal speex_free,
so it would require some more work.
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/********************************************************************
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* *
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* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
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* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
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* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
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* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
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* *
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* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
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* by the Xiph.Org Foundation http://www.xiph.org/ *
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* *
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********************************************************************
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function: PCM data envelope analysis and manipulation
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last mod: $Id: envelope.h 16227 2009-07-08 06:58:46Z xiphmont $
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********************************************************************/
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#ifndef _V_ENVELOPE_
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#define _V_ENVELOPE_
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#include "mdct.h"
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#define VE_PRE 16
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#define VE_WIN 4
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#define VE_POST 2
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#define VE_AMP (VE_PRE+VE_POST-1)
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#define VE_BANDS 7
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#define VE_NEARDC 15
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#define VE_MINSTRETCH 2 /* a bit less than short block */
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#define VE_MAXSTRETCH 12 /* one-third full block */
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typedef struct {
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float ampbuf[VE_AMP];
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int ampptr;
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float nearDC[VE_NEARDC];
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float nearDC_acc;
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float nearDC_partialacc;
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int nearptr;
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} envelope_filter_state;
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typedef struct {
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int begin;
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int end;
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float *window;
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float total;
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} envelope_band;
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typedef struct {
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int ch;
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int winlength;
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int searchstep;
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float minenergy;
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mdct_lookup mdct;
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float *mdct_win;
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envelope_band band[VE_BANDS];
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envelope_filter_state *filter;
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int stretch;
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int *mark;
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long storage;
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long current;
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long curmark;
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long cursor;
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} envelope_lookup;
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extern void _ve_envelope_init(envelope_lookup *e,vorbis_info *vi);
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extern void _ve_envelope_clear(envelope_lookup *e);
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extern long _ve_envelope_search(vorbis_dsp_state *v);
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extern void _ve_envelope_shift(envelope_lookup *e,long shift);
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extern int _ve_envelope_mark(vorbis_dsp_state *v);
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#endif
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