The Tor Browser: media/libvorbis/lib/psy.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     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  ********************************************************************

    13  function: random psychoacoustics (not including preecho)

    14  last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $

    16  ********************************************************************/

    18 #ifndef _V_PSY_H_

    19 #define _V_PSY_H_

    20 #include "smallft.h"

    22 #include "backends.h"

    23 #include "envelope.h"

    25 #ifndef EHMER_MAX

    26 #define EHMER_MAX 56

    27 #endif

    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

    35 #define NOISE_COMPAND_LEVELS 40

    36 typedef struct vorbis_info_psy{

    37   int   blockflag;

    39   float ath_adjatt;

    40   float ath_maxatt;

    42   float tone_masteratt[P_NOISECURVES];

    43   float tone_centerboost;

    44   float tone_decay;

    45   float tone_abs_limit;

    46   float toneatt[P_BANDS];

    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];

    58   float max_curve_dB;

    60   int normal_p;

    61   int normal_start;

    62   int normal_partition;

    63   double normal_thresh;

    64 } vorbis_info_psy;

    66 typedef struct{

    67   int   eighth_octave_lines;

    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;

    75   float ampmax_att_per_sec;

    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];

    84 } vorbis_info_psy_global;

    86 typedef struct {

    87   float ampmax;

    88   int   channels;

    90   vorbis_info_psy_global *gi;

    91   int   coupling_pointlimit[2][P_NOISECURVES];

    92 } vorbis_look_psy_global;

    95 typedef struct {

    96   int n;

    97   struct vorbis_info_psy *vi;

    99   float ***tonecurves;

   100   float **noiseoffset;

   102   float *ath;

   103   long  *octave;             /* in n.ocshift format */

   104   long  *bark;

   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 */

   112   float m_val; /* Masking compensation value */

   114 } vorbis_look_psy;

   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);

   121 extern void   _vi_psy_free(vorbis_info_psy *i);

   122 extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i);

   124 extern void _vp_noisemask(vorbis_look_psy *p,

   125                           float *logmdct,

   126                           float *logmask);

   128 extern void _vp_tonemask(vorbis_look_psy *p,

   129                          float *logfft,

   130                          float *logmask,

   131                          float global_specmax,

   132                          float local_specmax);

   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);

   142 extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);

   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);

   154 #endif

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