psy.c File Reference

#include <stdlib.h>
#include <math.h>
#include <string.h>
#include "../../codec.h"
#include "codec_internal.h"
#include "masking.h"
#include "psy.h"
#include "os.h"
#include "lpc.h"
#include "smallft.h"
#include "scales.h"
#include "misc.h"
#include <stdio.h>

Macros
#define	NEGINF   -9999.f

Functions
vorbis_look_psy_global *	_vp_global_look (vorbis_info *vi)
void	_vp_global_free (vorbis_look_psy_global *look)
static void	_vi_gpsy_free (vorbis_info_psy_global *i)
void	_vi_psy_free (vorbis_info_psy *i)
static void	min_curve (float *c, float *c2)
static void	max_curve (float *c, float *c2)
static void	attenuate_curve (float *c, float att)
static float ***	setup_tone_curves (float curveatt_dB[P_BANDS], float binHz, int n, float center_boost, float center_decay_rate)
void	_vp_psy_init (vorbis_look_psy *p, vorbis_info_psy *vi, vorbis_info_psy_global *gi, int n, long rate)
void	_vp_psy_clear (vorbis_look_psy *p)
static void	seed_curve (float *seed, const float **curves, float amp, int oc, int n, int linesper, float dBoffset)
static void	seed_loop (vorbis_look_psy *p, const float ***curves, const float *f, const float *flr, float *seed, float specmax)
static void	seed_chase (float *seeds, int linesper, long n)
static void	max_seeds (vorbis_look_psy *p, float *seed, float *flr)
static void	bark_noise_hybridmp (int n, const long *b, const float *f, float *noise, const float offset, const int fixed)
void	_vp_noisemask (vorbis_look_psy *p, float *logmdct, float *logmask)
void	_vp_tonemask (vorbis_look_psy *p, float *logfft, float *logmask, float global_specmax, float local_specmax)
void	_vp_offset_and_mix (vorbis_look_psy *p, float *noise, float *tone, int offset_select, float *logmask, float *mdct, float *logmdct)
float	_vp_ampmax_decay (float amp, vorbis_dsp_state *vd)
static int	apsort (const void *a, const void *b)
static void	flag_lossless (int limit, float prepoint, float postpoint, float *mdct, float *floor, int *flag, int i, int jn)
static float	noise_normalize (vorbis_look_psy *p, int limit, float *r, float *q, float *f, int *flags, float acc, int i, int n, int *out)
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)

Variables
static const double	stereo_threshholds [] ={0.0, .5, 1.0, 1.5, 2.5, 4.5, 8.5, 16.5, 9e10}
static const double	stereo_threshholds_limited [] ={0.0, .5, 1.0, 1.5, 2.0, 2.5, 4.5, 8.5, 9e10}

Macro Definition Documentation

NEGINF

#define NEGINF   -9999.f

Function Documentation

_vi_gpsy_free()

void _vi_gpsy_free ( vorbis_info_psy_global * i )

inlinestatic

_vi_psy_free()

void _vi_psy_free

(

vorbis_info_psy *

i

)

_vp_ampmax_decay()

float _vp_ampmax_decay	(	float	amp,
		vorbis_dsp_state *	vd )

_vp_couple_quantize_normalize()

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 )

_vp_global_free()

void _vp_global_free

(

vorbis_look_psy_global *

look

)

_vp_global_look()

vorbis_look_psy_global * _vp_global_look

(

vorbis_info *

vi

)

_vp_noisemask()

void _vp_noisemask	(	vorbis_look_psy *	p,
		float *	logmdct,
		float *	logmask )

_vp_offset_and_mix()

void _vp_offset_and_mix	(	vorbis_look_psy *	p,
		float *	noise,
		float *	tone,
		int	offset_select,
		float *	logmask,
		float *	mdct,
		float *	logmdct )

@ M1 ** The following codes improve a noise problem. A fundamental idea uses the value of masking and carries out the relative compensation of the MDCT. However, this code is not perfect and all noise problems cannot be solved. by Aoyumi @ 2004/04/18

_vp_psy_clear()

void _vp_psy_clear

(

vorbis_look_psy *

p

)

_vp_psy_init()

void _vp_psy_init	(	vorbis_look_psy *	p,
		vorbis_info_psy *	vi,
		vorbis_info_psy_global *	gi,
		int	n,
		long	rate )

_vp_tonemask()

void _vp_tonemask	(	vorbis_look_psy *	p,
		float *	logfft,
		float *	logmask,
		float	global_specmax,
		float	local_specmax )

apsort()

int apsort ( const void * a, const void * b )

static

attenuate_curve()

void attenuate_curve ( float * c, float att )

static

bark_noise_hybridmp()

void bark_noise_hybridmp ( int n, const long * b, const float * f, float * noise, const float offset, const int fixed )

static

flag_lossless()

void flag_lossless ( int limit, float prepoint, float postpoint, float * mdct, float * floor, int * flag, int i, int jn )

static

max_curve()

void max_curve ( float * c, float * c2 )

static

max_seeds()

void max_seeds ( vorbis_look_psy * p, float * seed, float * flr )

static

min_curve()

void min_curve ( float * c, float * c2 )

static

noise_normalize()

float noise_normalize ( vorbis_look_psy * p, int limit, float * r, float * q, float * f, int * flags, float acc, int i, int n, int * out )

static

seed_chase()

void seed_chase ( float * seeds, int linesper, long n )

static

seed_curve()

void seed_curve ( float * seed, const float ** curves, float amp, int oc, int n, int linesper, float dBoffset )

static

seed_loop()

void seed_loop ( vorbis_look_psy * p, const float *** curves, const float * f, const float * flr, float * seed, float specmax )

static

setup_tone_curves()

float *** setup_tone_curves ( float curveatt_dB[P_BANDS], float binHz, int n, float center_boost, float center_decay_rate )

static

Variable Documentation

stereo_threshholds

const double stereo_threshholds[] ={0.0, .5, 1.0, 1.5, 2.5, 4.5, 8.5, 16.5, 9e10}

static

stereo_threshholds_limited

const double stereo_threshholds_limited[] ={0.0, .5, 1.0, 1.5, 2.0, 2.5, 4.5, 8.5, 9e10}

static