1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libs/vorbis/psy.h	Sat Feb 01 19:58:19 2014 +0200
     1.3 @@ -0,0 +1,154 @@
     1.4 +/********************************************************************
     1.5 + *                                                                  *
     1.6 + * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
     1.7 + * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
     1.8 + * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
     1.9 + * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
    1.10 + *                                                                  *
    1.11 + * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009             *
    1.12 + * by the Xiph.Org Foundation http://www.xiph.org/                  *
    1.13 + *                                                                  *
    1.14 + ********************************************************************
    1.15 +
    1.16 + function: random psychoacoustics (not including preecho)
    1.17 + last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $
    1.18 +
    1.19 + ********************************************************************/
    1.20 +
    1.21 +#ifndef _V_PSY_H_
    1.22 +#define _V_PSY_H_
    1.23 +#include "smallft.h"
    1.24 +
    1.25 +#include "backends.h"
    1.26 +#include "envelope.h"
    1.27 +
    1.28 +#ifndef EHMER_MAX
    1.29 +#define EHMER_MAX 56
    1.30 +#endif
    1.31 +
    1.32 +/* psychoacoustic setup ********************************************/
    1.33 +#define P_BANDS 17      /* 62Hz to 16kHz */
    1.34 +#define P_LEVELS 8      /* 30dB to 100dB */
    1.35 +#define P_LEVEL_0 30.    /* 30 dB */
    1.36 +#define P_NOISECURVES 3
    1.37 +
    1.38 +#define NOISE_COMPAND_LEVELS 40
    1.39 +typedef struct vorbis_info_psy{
    1.40 +  int   blockflag;
    1.41 +
    1.42 +  float ath_adjatt;
    1.43 +  float ath_maxatt;
    1.44 +
    1.45 +  float tone_masteratt[P_NOISECURVES];
    1.46 +  float tone_centerboost;
    1.47 +  float tone_decay;
    1.48 +  float tone_abs_limit;
    1.49 +  float toneatt[P_BANDS];
    1.50 +
    1.51 +  int noisemaskp;
    1.52 +  float noisemaxsupp;
    1.53 +  float noisewindowlo;
    1.54 +  float noisewindowhi;
    1.55 +  int   noisewindowlomin;
    1.56 +  int   noisewindowhimin;
    1.57 +  int   noisewindowfixed;
    1.58 +  float noiseoff[P_NOISECURVES][P_BANDS];
    1.59 +  float noisecompand[NOISE_COMPAND_LEVELS];
    1.60 +
    1.61 +  float max_curve_dB;
    1.62 +
    1.63 +  int normal_p;
    1.64 +  int normal_start;
    1.65 +  int normal_partition;
    1.66 +  double normal_thresh;
    1.67 +} vorbis_info_psy;
    1.68 +
    1.69 +typedef struct{
    1.70 +  int   eighth_octave_lines;
    1.71 +
    1.72 +  /* for block long/short tuning; encode only */
    1.73 +  float preecho_thresh[VE_BANDS];
    1.74 +  float postecho_thresh[VE_BANDS];
    1.75 +  float stretch_penalty;
    1.76 +  float preecho_minenergy;
    1.77 +
    1.78 +  float ampmax_att_per_sec;
    1.79 +
    1.80 +  /* channel coupling config */
    1.81 +  int   coupling_pkHz[PACKETBLOBS];
    1.82 +  int   coupling_pointlimit[2][PACKETBLOBS];
    1.83 +  int   coupling_prepointamp[PACKETBLOBS];
    1.84 +  int   coupling_postpointamp[PACKETBLOBS];
    1.85 +  int   sliding_lowpass[2][PACKETBLOBS];
    1.86 +
    1.87 +} vorbis_info_psy_global;
    1.88 +
    1.89 +typedef struct {
    1.90 +  float ampmax;
    1.91 +  int   channels;
    1.92 +
    1.93 +  vorbis_info_psy_global *gi;
    1.94 +  int   coupling_pointlimit[2][P_NOISECURVES];
    1.95 +} vorbis_look_psy_global;
    1.96 +
    1.97 +
    1.98 +typedef struct {
    1.99 +  int n;
   1.100 +  struct vorbis_info_psy *vi;
   1.101 +
   1.102 +  float ***tonecurves;
   1.103 +  float **noiseoffset;
   1.104 +
   1.105 +  float *ath;
   1.106 +  long  *octave;             /* in n.ocshift format */
   1.107 +  long  *bark;
   1.108 +
   1.109 +  long  firstoc;
   1.110 +  long  shiftoc;
   1.111 +  int   eighth_octave_lines; /* power of two, please */
   1.112 +  int   total_octave_lines;
   1.113 +  long  rate; /* cache it */
   1.114 +
   1.115 +  float m_val; /* Masking compensation value */
   1.116 +
   1.117 +} vorbis_look_psy;
   1.118 +
   1.119 +extern void   _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,
   1.120 +                           vorbis_info_psy_global *gi,int n,long rate);
   1.121 +extern void   _vp_psy_clear(vorbis_look_psy *p);
   1.122 +extern void  *_vi_psy_dup(void *source);
   1.123 +
   1.124 +extern void   _vi_psy_free(vorbis_info_psy *i);
   1.125 +extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i);
   1.126 +
   1.127 +extern void _vp_noisemask(vorbis_look_psy *p,
   1.128 +                          float *logmdct,
   1.129 +                          float *logmask);
   1.130 +
   1.131 +extern void _vp_tonemask(vorbis_look_psy *p,
   1.132 +                         float *logfft,
   1.133 +                         float *logmask,
   1.134 +                         float global_specmax,
   1.135 +                         float local_specmax);
   1.136 +
   1.137 +extern void _vp_offset_and_mix(vorbis_look_psy *p,
   1.138 +                               float *noise,
   1.139 +                               float *tone,
   1.140 +                               int offset_select,
   1.141 +                               float *logmask,
   1.142 +                               float *mdct,
   1.143 +                               float *logmdct);
   1.144 +
   1.145 +extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
   1.146 +
   1.147 +extern void _vp_couple_quantize_normalize(int blobno,
   1.148 +                                          vorbis_info_psy_global *g,
   1.149 +                                          vorbis_look_psy *p,
   1.150 +                                          vorbis_info_mapping0 *vi,
   1.151 +                                          float **mdct,
   1.152 +                                          int   **iwork,
   1.153 +                                          int    *nonzero,
   1.154 +                                          int     sliding_lowpass,
   1.155 +                                          int     ch);
   1.156 +
   1.157 +#endif