The Tor Browser / file comparison
comparison: media/libvorbis/lib/psy.h
media/libvorbis/lib/psy.h
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:8aed56676e26 |
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| 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 http://www.xiph.org/ * | |
| 10 * * | |
| 11 ******************************************************************** | |
| 12 | |
| 13 function: random psychoacoustics (not including preecho) | |
| 14 last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $ | |
| 15 | |
| 16 ********************************************************************/ | |
| 17 | |
| 18 #ifndef _V_PSY_H_ | |
| 19 #define _V_PSY_H_ | |
| 20 #include "smallft.h" | |
| 21 | |
| 22 #include "backends.h" | |
| 23 #include "envelope.h" | |
| 24 | |
| 25 #ifndef EHMER_MAX | |
| 26 #define EHMER_MAX 56 | |
| 27 #endif | |
| 28 | |
| 29 /* psychoacoustic setup ********************************************/ | |
| 30 #define P_BANDS 17 /* 62Hz to 16kHz */ | |
| 31 #define P_LEVELS 8 /* 30dB to 100dB */ | |
| 32 #define P_LEVEL_0 30. /* 30 dB */ | |
| 33 #define P_NOISECURVES 3 | |
| 34 | |
| 35 #define NOISE_COMPAND_LEVELS 40 | |
| 36 typedef struct vorbis_info_psy{ | |
| 37 int blockflag; | |
| 38 | |
| 39 float ath_adjatt; | |
| 40 float ath_maxatt; | |
| 41 | |
| 42 float tone_masteratt[P_NOISECURVES]; | |
| 43 float tone_centerboost; | |
| 44 float tone_decay; | |
| 45 float tone_abs_limit; | |
| 46 float toneatt[P_BANDS]; | |
| 47 | |
| 48 int noisemaskp; | |
| 49 float noisemaxsupp; | |
| 50 float noisewindowlo; | |
| 51 float noisewindowhi; | |
| 52 int noisewindowlomin; | |
| 53 int noisewindowhimin; | |
| 54 int noisewindowfixed; | |
| 55 float noiseoff[P_NOISECURVES][P_BANDS]; | |
| 56 float noisecompand[NOISE_COMPAND_LEVELS]; | |
| 57 | |
| 58 float max_curve_dB; | |
| 59 | |
| 60 int normal_p; | |
| 61 int normal_start; | |
| 62 int normal_partition; | |
| 63 double normal_thresh; | |
| 64 } vorbis_info_psy; | |
| 65 | |
| 66 typedef struct{ | |
| 67 int eighth_octave_lines; | |
| 68 | |
| 69 /* for block long/short tuning; encode only */ | |
| 70 float preecho_thresh[VE_BANDS]; | |
| 71 float postecho_thresh[VE_BANDS]; | |
| 72 float stretch_penalty; | |
| 73 float preecho_minenergy; | |
| 74 | |
| 75 float ampmax_att_per_sec; | |
| 76 | |
| 77 /* channel coupling config */ | |
| 78 int coupling_pkHz[PACKETBLOBS]; | |
| 79 int coupling_pointlimit[2][PACKETBLOBS]; | |
| 80 int coupling_prepointamp[PACKETBLOBS]; | |
| 81 int coupling_postpointamp[PACKETBLOBS]; | |
| 82 int sliding_lowpass[2][PACKETBLOBS]; | |
| 83 | |
| 84 } vorbis_info_psy_global; | |
| 85 | |
| 86 typedef struct { | |
| 87 float ampmax; | |
| 88 int channels; | |
| 89 | |
| 90 vorbis_info_psy_global *gi; | |
| 91 int coupling_pointlimit[2][P_NOISECURVES]; | |
| 92 } vorbis_look_psy_global; | |
| 93 | |
| 94 | |
| 95 typedef struct { | |
| 96 int n; | |
| 97 struct vorbis_info_psy *vi; | |
| 98 | |
| 99 float ***tonecurves; | |
| 100 float **noiseoffset; | |
| 101 | |
| 102 float *ath; | |
| 103 long *octave; /* in n.ocshift format */ | |
| 104 long *bark; | |
| 105 | |
| 106 long firstoc; | |
| 107 long shiftoc; | |
| 108 int eighth_octave_lines; /* power of two, please */ | |
| 109 int total_octave_lines; | |
| 110 long rate; /* cache it */ | |
| 111 | |
| 112 float m_val; /* Masking compensation value */ | |
| 113 | |
| 114 } vorbis_look_psy; | |
| 115 | |
| 116 extern void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi, | |
| 117 vorbis_info_psy_global *gi,int n,long rate); | |
| 118 extern void _vp_psy_clear(vorbis_look_psy *p); | |
| 119 extern void *_vi_psy_dup(void *source); | |
| 120 | |
| 121 extern void _vi_psy_free(vorbis_info_psy *i); | |
| 122 extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i); | |
| 123 | |
| 124 extern void _vp_noisemask(vorbis_look_psy *p, | |
| 125 float *logmdct, | |
| 126 float *logmask); | |
| 127 | |
| 128 extern void _vp_tonemask(vorbis_look_psy *p, | |
| 129 float *logfft, | |
| 130 float *logmask, | |
| 131 float global_specmax, | |
| 132 float local_specmax); | |
| 133 | |
| 134 extern void _vp_offset_and_mix(vorbis_look_psy *p, | |
| 135 float *noise, | |
| 136 float *tone, | |
| 137 int offset_select, | |
| 138 float *logmask, | |
| 139 float *mdct, | |
| 140 float *logmdct); | |
| 141 | |
| 142 extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd); | |
| 143 | |
| 144 extern void _vp_couple_quantize_normalize(int blobno, | |
| 145 vorbis_info_psy_global *g, | |
| 146 vorbis_look_psy *p, | |
| 147 vorbis_info_mapping0 *vi, | |
| 148 float **mdct, | |
| 149 int **iwork, | |
| 150 int *nonzero, | |
| 151 int sliding_lowpass, | |
| 152 int ch); | |
| 153 | |
| 154 #endif |
