psy.h File Reference

#include "smallft.h"
#include "backends.h"
#include "envelope.h"

Go to the source code of this file.

Classes
struct	vorbis_info_psy
struct	vorbis_info_psy_global
struct	vorbis_look_psy_global
struct	vorbis_look_psy

Macros
#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

Typedefs
typedef struct vorbis_info_psy	vorbis_info_psy

Functions
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)
void *	_vi_psy_dup (void *source)
void	_vi_psy_free (vorbis_info_psy *i)
vorbis_info_psy *	_vi_psy_copy (vorbis_info_psy *i)
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)
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)

Macro Definition Documentation

NOISE_COMPAND_LEVELS

#define NOISE_COMPAND_LEVELS   40

P_BANDS

#define P_BANDS   17 /* 62Hz to 16kHz */

P_LEVEL_0

#define P_LEVEL_0   30. /* 30 dB */

P_LEVELS

#define P_LEVELS   8 /* 30dB to 100dB */

P_NOISECURVES

#define P_NOISECURVES   3

Typedef Documentation

vorbis_info_psy

typedef struct vorbis_info_psy vorbis_info_psy

Function Documentation

_vi_psy_copy()

vorbis_info_psy * _vi_psy_copy ( vorbis_info_psy * i )

extern

_vi_psy_dup()

void * _vi_psy_dup ( void * source )

extern

_vi_psy_free()

void _vi_psy_free ( vorbis_info_psy * i )

extern

_vp_ampmax_decay()

float _vp_ampmax_decay ( float amp, vorbis_dsp_state * vd )

extern

_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 )

extern

_vp_noisemask()

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

extern

_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 )

extern

@ 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 )

extern

_vp_psy_init()

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

extern

_vp_tonemask()

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

extern