dbf-halloween2015

annotate libs/vorbis/psy.h @ 3:c37fe5d8a4ed

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windows port
author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 01 Nov 2015 06:04:28 +0200
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nuclear@1 1 /********************************************************************
nuclear@1 2 * *
nuclear@1 3 * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
nuclear@1 4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
nuclear@1 5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
nuclear@1 6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
nuclear@1 7 * *
nuclear@1 8 * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
nuclear@1 9 * by the Xiph.Org Foundation http://www.xiph.org/ *
nuclear@1 10 * *
nuclear@1 11 ********************************************************************
nuclear@1 12
nuclear@1 13 function: random psychoacoustics (not including preecho)
nuclear@1 14 last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $
nuclear@1 15
nuclear@1 16 ********************************************************************/
nuclear@1 17
nuclear@1 18 #ifndef _V_PSY_H_
nuclear@1 19 #define _V_PSY_H_
nuclear@1 20 #include "smallft.h"
nuclear@1 21
nuclear@1 22 #include "backends.h"
nuclear@1 23 #include "envelope.h"
nuclear@1 24
nuclear@1 25 #ifndef EHMER_MAX
nuclear@1 26 #define EHMER_MAX 56
nuclear@1 27 #endif
nuclear@1 28
nuclear@1 29 /* psychoacoustic setup ********************************************/
nuclear@1 30 #define P_BANDS 17 /* 62Hz to 16kHz */
nuclear@1 31 #define P_LEVELS 8 /* 30dB to 100dB */
nuclear@1 32 #define P_LEVEL_0 30. /* 30 dB */
nuclear@1 33 #define P_NOISECURVES 3
nuclear@1 34
nuclear@1 35 #define NOISE_COMPAND_LEVELS 40
nuclear@1 36 typedef struct vorbis_info_psy{
nuclear@1 37 int blockflag;
nuclear@1 38
nuclear@1 39 float ath_adjatt;
nuclear@1 40 float ath_maxatt;
nuclear@1 41
nuclear@1 42 float tone_masteratt[P_NOISECURVES];
nuclear@1 43 float tone_centerboost;
nuclear@1 44 float tone_decay;
nuclear@1 45 float tone_abs_limit;
nuclear@1 46 float toneatt[P_BANDS];
nuclear@1 47
nuclear@1 48 int noisemaskp;
nuclear@1 49 float noisemaxsupp;
nuclear@1 50 float noisewindowlo;
nuclear@1 51 float noisewindowhi;
nuclear@1 52 int noisewindowlomin;
nuclear@1 53 int noisewindowhimin;
nuclear@1 54 int noisewindowfixed;
nuclear@1 55 float noiseoff[P_NOISECURVES][P_BANDS];
nuclear@1 56 float noisecompand[NOISE_COMPAND_LEVELS];
nuclear@1 57
nuclear@1 58 float max_curve_dB;
nuclear@1 59
nuclear@1 60 int normal_p;
nuclear@1 61 int normal_start;
nuclear@1 62 int normal_partition;
nuclear@1 63 double normal_thresh;
nuclear@1 64 } vorbis_info_psy;
nuclear@1 65
nuclear@1 66 typedef struct{
nuclear@1 67 int eighth_octave_lines;
nuclear@1 68
nuclear@1 69 /* for block long/short tuning; encode only */
nuclear@1 70 float preecho_thresh[VE_BANDS];
nuclear@1 71 float postecho_thresh[VE_BANDS];
nuclear@1 72 float stretch_penalty;
nuclear@1 73 float preecho_minenergy;
nuclear@1 74
nuclear@1 75 float ampmax_att_per_sec;
nuclear@1 76
nuclear@1 77 /* channel coupling config */
nuclear@1 78 int coupling_pkHz[PACKETBLOBS];
nuclear@1 79 int coupling_pointlimit[2][PACKETBLOBS];
nuclear@1 80 int coupling_prepointamp[PACKETBLOBS];
nuclear@1 81 int coupling_postpointamp[PACKETBLOBS];
nuclear@1 82 int sliding_lowpass[2][PACKETBLOBS];
nuclear@1 83
nuclear@1 84 } vorbis_info_psy_global;
nuclear@1 85
nuclear@1 86 typedef struct {
nuclear@1 87 float ampmax;
nuclear@1 88 int channels;
nuclear@1 89
nuclear@1 90 vorbis_info_psy_global *gi;
nuclear@1 91 int coupling_pointlimit[2][P_NOISECURVES];
nuclear@1 92 } vorbis_look_psy_global;
nuclear@1 93
nuclear@1 94
nuclear@1 95 typedef struct {
nuclear@1 96 int n;
nuclear@1 97 struct vorbis_info_psy *vi;
nuclear@1 98
nuclear@1 99 float ***tonecurves;
nuclear@1 100 float **noiseoffset;
nuclear@1 101
nuclear@1 102 float *ath;
nuclear@1 103 long *octave; /* in n.ocshift format */
nuclear@1 104 long *bark;
nuclear@1 105
nuclear@1 106 long firstoc;
nuclear@1 107 long shiftoc;
nuclear@1 108 int eighth_octave_lines; /* power of two, please */
nuclear@1 109 int total_octave_lines;
nuclear@1 110 long rate; /* cache it */
nuclear@1 111
nuclear@1 112 float m_val; /* Masking compensation value */
nuclear@1 113
nuclear@1 114 } vorbis_look_psy;
nuclear@1 115
nuclear@1 116 extern void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,
nuclear@1 117 vorbis_info_psy_global *gi,int n,long rate);
nuclear@1 118 extern void _vp_psy_clear(vorbis_look_psy *p);
nuclear@1 119 extern void *_vi_psy_dup(void *source);
nuclear@1 120
nuclear@1 121 extern void _vi_psy_free(vorbis_info_psy *i);
nuclear@1 122 extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i);
nuclear@1 123
nuclear@1 124 extern void _vp_noisemask(vorbis_look_psy *p,
nuclear@1 125 float *logmdct,
nuclear@1 126 float *logmask);
nuclear@1 127
nuclear@1 128 extern void _vp_tonemask(vorbis_look_psy *p,
nuclear@1 129 float *logfft,
nuclear@1 130 float *logmask,
nuclear@1 131 float global_specmax,
nuclear@1 132 float local_specmax);
nuclear@1 133
nuclear@1 134 extern void _vp_offset_and_mix(vorbis_look_psy *p,
nuclear@1 135 float *noise,
nuclear@1 136 float *tone,
nuclear@1 137 int offset_select,
nuclear@1 138 float *logmask,
nuclear@1 139 float *mdct,
nuclear@1 140 float *logmdct);
nuclear@1 141
nuclear@1 142 extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
nuclear@1 143
nuclear@1 144 extern void _vp_couple_quantize_normalize(int blobno,
nuclear@1 145 vorbis_info_psy_global *g,
nuclear@1 146 vorbis_look_psy *p,
nuclear@1 147 vorbis_info_mapping0 *vi,
nuclear@1 148 float **mdct,
nuclear@1 149 int **iwork,
nuclear@1 150 int *nonzero,
nuclear@1 151 int sliding_lowpass,
nuclear@1 152 int ch);
nuclear@1 153
nuclear@1 154 #endif