mirror of
https://github.com/TorqueGameEngines/Torque3D.git
synced 2026-03-25 15:19:30 +00:00
a745fc3757
added libraries: opus flac libsndfile updated: libvorbis libogg openal - Everything works as expected for now. Bare in mind libsndfile needed the check for whether or not it could find the xiph libraries removed in order for this to work.
79 lines
2.1 KiB
C
79 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 https://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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********************************************************************/
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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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