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media/libvorbis/lib/psy.h@97036ab72558 (annotated)

media/libvorbis/lib/psy.h

Tue, 06 Jan 2015 21:39:09 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Tue, 06 Jan 2015 21:39:09 +0100

branch

TOR_BUG_9701

changeset 8

97036ab72558

permissions

-rw-r--r--

Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.

michael@0	1	/********************************************************************
michael@0	2	* *
michael@0	3	* THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE. *
michael@0	4	* USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
michael@0	5	* GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
michael@0	6	* IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
michael@0	7	* *
michael@0	8	* THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2009 *
michael@0	9	* by the Xiph.Org Foundation http://www.xiph.org/ *
michael@0	10	* *
michael@0	11	********************************************************************
michael@0	12
michael@0	13	function: random psychoacoustics (not including preecho)
michael@0	14	last mod: $Id: psy.h 16946 2010-03-03 16:12:40Z xiphmont $
michael@0	15
michael@0	16	********************************************************************/
michael@0	17
michael@0	18	#ifndef _V_PSY_H_
michael@0	19	#define _V_PSY_H_
michael@0	20	#include "smallft.h"
michael@0	21
michael@0	22	#include "backends.h"
michael@0	23	#include "envelope.h"
michael@0	24
michael@0	25	#ifndef EHMER_MAX
michael@0	26	#define EHMER_MAX 56
michael@0	27	#endif
michael@0	28
michael@0	29	/* psychoacoustic setup ********************************************/
michael@0	30	#define P_BANDS 17 /* 62Hz to 16kHz */
michael@0	31	#define P_LEVELS 8 /* 30dB to 100dB */
michael@0	32	#define P_LEVEL_0 30. /* 30 dB */
michael@0	33	#define P_NOISECURVES 3
michael@0	34
michael@0	35	#define NOISE_COMPAND_LEVELS 40
michael@0	36	typedef struct vorbis_info_psy{
michael@0	37	int blockflag;
michael@0	38
michael@0	39	float ath_adjatt;
michael@0	40	float ath_maxatt;
michael@0	41
michael@0	42	float tone_masteratt[P_NOISECURVES];
michael@0	43	float tone_centerboost;
michael@0	44	float tone_decay;
michael@0	45	float tone_abs_limit;
michael@0	46	float toneatt[P_BANDS];
michael@0	47
michael@0	48	int noisemaskp;
michael@0	49	float noisemaxsupp;
michael@0	50	float noisewindowlo;
michael@0	51	float noisewindowhi;
michael@0	52	int noisewindowlomin;
michael@0	53	int noisewindowhimin;
michael@0	54	int noisewindowfixed;
michael@0	55	float noiseoff[P_NOISECURVES][P_BANDS];
michael@0	56	float noisecompand[NOISE_COMPAND_LEVELS];
michael@0	57
michael@0	58	float max_curve_dB;
michael@0	59
michael@0	60	int normal_p;
michael@0	61	int normal_start;
michael@0	62	int normal_partition;
michael@0	63	double normal_thresh;
michael@0	64	} vorbis_info_psy;
michael@0	65
michael@0	66	typedef struct{
michael@0	67	int eighth_octave_lines;
michael@0	68
michael@0	69	/* for block long/short tuning; encode only */
michael@0	70	float preecho_thresh[VE_BANDS];
michael@0	71	float postecho_thresh[VE_BANDS];
michael@0	72	float stretch_penalty;
michael@0	73	float preecho_minenergy;
michael@0	74
michael@0	75	float ampmax_att_per_sec;
michael@0	76
michael@0	77	/* channel coupling config */
michael@0	78	int coupling_pkHz[PACKETBLOBS];
michael@0	79	int coupling_pointlimit[2][PACKETBLOBS];
michael@0	80	int coupling_prepointamp[PACKETBLOBS];
michael@0	81	int coupling_postpointamp[PACKETBLOBS];
michael@0	82	int sliding_lowpass[2][PACKETBLOBS];
michael@0	83
michael@0	84	} vorbis_info_psy_global;
michael@0	85
michael@0	86	typedef struct {
michael@0	87	float ampmax;
michael@0	88	int channels;
michael@0	89
michael@0	90	vorbis_info_psy_global *gi;
michael@0	91	int coupling_pointlimit[2][P_NOISECURVES];
michael@0	92	} vorbis_look_psy_global;
michael@0	93
michael@0	94
michael@0	95	typedef struct {
michael@0	96	int n;
michael@0	97	struct vorbis_info_psy *vi;
michael@0	98
michael@0	99	float ***tonecurves;
michael@0	100	float **noiseoffset;
michael@0	101
michael@0	102	float *ath;
michael@0	103	long *octave; /* in n.ocshift format */
michael@0	104	long *bark;
michael@0	105
michael@0	106	long firstoc;
michael@0	107	long shiftoc;
michael@0	108	int eighth_octave_lines; /* power of two, please */
michael@0	109	int total_octave_lines;
michael@0	110	long rate; /* cache it */
michael@0	111
michael@0	112	float m_val; /* Masking compensation value */
michael@0	113
michael@0	114	} vorbis_look_psy;
michael@0	115
michael@0	116	extern void _vp_psy_init(vorbis_look_psy *p,vorbis_info_psy *vi,
michael@0	117	vorbis_info_psy_global *gi,int n,long rate);
michael@0	118	extern void _vp_psy_clear(vorbis_look_psy *p);
michael@0	119	extern void *_vi_psy_dup(void *source);
michael@0	120
michael@0	121	extern void _vi_psy_free(vorbis_info_psy *i);
michael@0	122	extern vorbis_info_psy *_vi_psy_copy(vorbis_info_psy *i);
michael@0	123
michael@0	124	extern void _vp_noisemask(vorbis_look_psy *p,
michael@0	125	float *logmdct,
michael@0	126	float *logmask);
michael@0	127
michael@0	128	extern void _vp_tonemask(vorbis_look_psy *p,
michael@0	129	float *logfft,
michael@0	130	float *logmask,
michael@0	131	float global_specmax,
michael@0	132	float local_specmax);
michael@0	133
michael@0	134	extern void _vp_offset_and_mix(vorbis_look_psy *p,
michael@0	135	float *noise,
michael@0	136	float *tone,
michael@0	137	int offset_select,
michael@0	138	float *logmask,
michael@0	139	float *mdct,
michael@0	140	float *logmdct);
michael@0	141
michael@0	142	extern float _vp_ampmax_decay(float amp,vorbis_dsp_state *vd);
michael@0	143
michael@0	144	extern void _vp_couple_quantize_normalize(int blobno,
michael@0	145	vorbis_info_psy_global *g,
michael@0	146	vorbis_look_psy *p,
michael@0	147	vorbis_info_mapping0 *vi,
michael@0	148	float **mdct,
michael@0	149	int **iwork,
michael@0	150	int *nonzero,
michael@0	151	int sliding_lowpass,
michael@0	152	int ch);
michael@0	153
michael@0	154	#endif