+/********************************************************************
+ * *
+ * 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 1994-2009 *
+ * by the Xiph.Org Foundation http://www.xiph.org/ *
+ * *
+ ********************************************************************
+
+ function: random psychoacoustics (not including preecho)
+ last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $
+
+ ********************************************************************/
+
+#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 max_curve_dB;
+
+ 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 **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 */
+
+ float m_val; /* Masking compensation value */
+
+} 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_noisemask(vorbis_look_psy *p,
+ 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);
+
+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 / laserbrain_demo / blobdiff