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/********************************************************************
* *
* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
* *
* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
* by the XIPHOPHORUS Company http://www.xiph.org/ *
* *
********************************************************************
function: random psychoacoustics (not including preecho)
last mod: $Id$
********************************************************************/
#define OPT_SORT
#ifndef _V_PSY_H_
#define _V_PSY_H_
#include "smallft.h"
#include "backends.h"
#include "envelope.h"
#ifndef EHMER_MAX
#define EHMER_MAX 56
#endif
/* psychoacoustic setup ********************************************/
#define P_BANDS 17 /* 62Hz to 16kHz */
#define P_LEVELS 8 /* 30dB to 100dB */
#define P_LEVEL_0 30. /* 30 dB */
#define P_NOISECURVES 3
#define NOISE_COMPAND_LEVELS 40
typedef struct vorbis_info_psy{
int blockflag;
float ath_adjatt;
float ath_maxatt;
float tone_masteratt[P_NOISECURVES];
float tone_centerboost;
float tone_decay;
float tone_abs_limit;
float toneatt[P_BANDS];
int noisemaskp;
float noisemaxsupp;
float noisewindowlo;
float noisewindowhi;
int noisewindowlomin;
int noisewindowhimin;
int noisewindowfixed;
float noiseoff[P_NOISECURVES][P_BANDS];
float noisecompand[NOISE_COMPAND_LEVELS];
float noisecompand_high[NOISE_COMPAND_LEVELS];
float flacint;
float max_curve_dB;
int normal_channel_p;
int normal_point_p;
int normal_start;
int normal_partition;
double normal_thresh;
} vorbis_info_psy;
typedef struct{
int eighth_octave_lines;
/* for block long/short tuning; encode only */
float preecho_thresh[VE_BANDS];
float postecho_thresh[VE_BANDS];
float stretch_penalty;
float preecho_minenergy;
float ampmax_att_per_sec;
/* channel coupling config */
int coupling_pkHz[PACKETBLOBS];
int coupling_pointlimit[2][PACKETBLOBS];
int coupling_prepointamp[PACKETBLOBS];
int coupling_postpointamp[PACKETBLOBS];
int sliding_lowpass[2][PACKETBLOBS];
} vorbis_info_psy_global;
typedef struct {
float ampmax;
int channels;
vorbis_info_psy_global *gi;
int coupling_pointlimit[2][P_NOISECURVES];
} vorbis_look_psy_global;
typedef struct {
int n;
struct vorbis_info_psy *vi;
float ***tonecurves;
float **noiseoffset;
float *ath;
long *octave; /* in n.ocshift format */
long *bark;
long firstoc;
long shiftoc;
int eighth_octave_lines; /* power of two, please */
int total_octave_lines;
long rate; /* cache it */
int m3n[4]; /* number for M3 */
int tonecomp_endp; /* for M4 */
int min_nn_lp; /* for M6 */
float tonecomp_thres; /* for M4 */
float m_val; /* masking compensation value */
int st_freqlimit; /* for M6 */
int n25p;
int n33p;
int n75p;
} vorbis_look_psy;
extern void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,
vorbis_info_psy_global *gi,int n,long rate);
extern void _vp_psy_clear(vorbis_look_psy *p);
extern void *_vi_psy_dup(void *source);
extern void _vi_psy_free(vorbis_info_psy *i);
extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i);
extern void _vp_remove_floor(vorbis_look_psy *p,
float *mdct,
int *icodedflr,
float *residue,
int sliding_lowpass);
extern void _vp_noisemask(vorbis_look_psy *p,
float noise_compand_level,
float *logmdct,
float *logmask);
extern void _vp_tonemask(vorbis_look_psy *p,
float *logfft,
float *logmask,
float global_specmax,
float local_specmax);
extern void _vp_offset_and_mix(vorbis_look_psy *p,
float *noise,
float *tone,
int offset_select,
float *logmask,
float *mdct,
float *logmdct,
float *lastmdct, float *tempmdct,
float low_compand,
int end_block,
int blocktype, int modenumber,
int nW_modenumber,
int lW_blocktype, int lW_modenumber, int lW_no);
extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
extern float **_vp_quantize_couple_memo(vorbis_block *vb,
vorbis_info_psy_global *g,
vorbis_look_psy *p,
vorbis_info_mapping0 *vi,
float **mdct);
extern void _vp_couple(int blobno,
vorbis_info_psy_global *g,
vorbis_look_psy *p,
vorbis_info_mapping0 *vi,
float **res,
float **mag_memo,
int **mag_sort,
int **ifloor,
int *nonzero,
int sliding_lowpass,
float **mdct, float **res_org);
extern void _vp_noise_normalize(vorbis_look_psy *p,
float *in,float *out,int *sortedindex);
extern void _vp_noise_normalize_sort(vorbis_look_psy *p,
float *magnitudes,int *sortedindex);
extern int **_vp_quantize_couple_sort(vorbis_block *vb,
vorbis_look_psy *p,
vorbis_info_mapping0 *vi,
float **mags);
extern float lb_loudnoise_fix(vorbis_look_psy *p,
float noise_compand_level,
float *logmdct,
int lW_modenumber,
int blocktype, int modenumber);
#endif
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