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