* 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 1994-2001 *
- * by the XIPHOPHORUS Company http://www.xiph.org/ *
-
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
********************************************************************
function: random psychoacoustics (not including preecho)
- last mod: $Id: psy.h,v 1.19 2001/02/26 03:50:43 xiphmont Exp $
********************************************************************/
#define _V_PSY_H_
#include "smallft.h"
+#include "backends.h"
+#include "envelope.h"
+
#ifndef EHMER_MAX
#define EHMER_MAX 56
#endif
/* psychoacoustic setup ********************************************/
-#define MAX_BARK 27
-#define P_BANDS 17
-#define P_LEVELS 11
-typedef struct vorbis_info_psy{
- int athp;
- int decayp;
-
- float ath_adjatt;
- float ath_maxatt;
-
- int eighth_octave_lines;
+#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
- /* 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 */
- /* x: 63 88 125 175 250 350 500 700 1k 1.4k 2k 2.8k 4k 5.6k 8k 11.5k 16k Hz */
- /* y: 0 10 20 30 40 50 60 70 80 90 100 dB */
+#define NOISE_COMPAND_LEVELS 40
+typedef struct vorbis_info_psy{
+ int blockflag;
- int tonemaskp;
- float toneatt[P_BANDS][P_LEVELS];
+ float ath_adjatt;
+ float ath_maxatt;
- int peakattp;
- float peakatt[P_BANDS][P_LEVELS];
+ float tone_masteratt[P_NOISECURVES];
+ float tone_centerboost;
+ float tone_decay;
+ float tone_abs_limit;
+ float toneatt[P_BANDS];
int noisemaskp;
float noisemaxsupp;
float noisewindowhi;
int noisewindowlomin;
int noisewindowhimin;
- float noisemedian[P_BANDS*2];
+ int noisewindowfixed;
+ float noiseoff[P_NOISECURVES][P_BANDS];
+ float noisecompand[NOISE_COMPAND_LEVELS];
float max_curve_dB;
- float bound_att_dB;
- /* decay setup */
- float attack_coeff;
- float decay_coeff;
+ int normal_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 **peakatt;
- float *noisemedian;
- float *noiseoffset;
+ float **noiseoffset;
float *ath;
long *octave; /* in n.ocshift format */
- float *bark;
+ long *bark;
long firstoc;
long shiftoc;
int eighth_octave_lines; /* power of two, please */
- int total_octave_lines;
+ int total_octave_lines;
+ long rate; /* cache it */
+
+ float m_val; /* Masking compensation value */
} vorbis_look_psy;
-extern void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,int n,long rate);
+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 float _vp_compute_mask(vorbis_look_psy *p,
- float *fft,
- float *mdct,
- float *floor,
- float *decay,
- float prev_maxamp);
-extern void _vp_apply_floor(vorbis_look_psy *p,float *f,float *flr);
-extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
+extern void _vp_noisemask(vorbis_look_psy *p,
+ float *logmdct,
+ float *logmask);
-#endif
+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);
+extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
+
+extern void _vp_couple_quantize_normalize(int blobno,
+ vorbis_info_psy_global *g,
+ vorbis_look_psy *p,
+ vorbis_info_mapping0 *vi,
+ float **mdct,
+ int **iwork,
+ int *nonzero,
+ int sliding_lowpass,
+ int ch);
+#endif
projects / platform / upstream / libvorbis.git / blobdiff