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

Classes
struct	vorbis_info_psy

struct	vorbis_info_psy_global

struct	vorbis_look_psy

struct	vorbis_look_psy_global

Macros
#define	NOISE_COMPAND_LEVELS 40

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

#define	P_LEVEL_0 30. /* 30 dB */

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

#define	P_NOISECURVES 3

Typedefs
typedef struct vorbis_info_psy	vorbis_info_psy

Functions
vorbis_info_psy *	_vi_psy_copy (vorbis_info_psy *i)

void *	_vi_psy_dup (void *source)

void	_vi_psy_free (vorbis_info_psy *i)

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)

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

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

void	_vp_psy_clear (vorbis_look_psy *p)

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

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

Macro Definition Documentation

#define NOISE_COMPAND_LEVELS 40

Definition at line 35 of file psy.h.

Referenced by _vp_noisemask(), and vorbis_encode_compand_setup().

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

Definition at line 30 of file psy.h.

Referenced by _vp_psy_clear(), _vp_psy_init(), seed_loop(), setup_tone_curves(), vorbis_encode_noisebias_setup(), and vorbis_encode_tonemask_setup().

#define P_LEVEL_0 30. /* 30 dB */

Definition at line 32 of file psy.h.

Referenced by seed_curve(), and setup_tone_curves().

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

Definition at line 31 of file psy.h.

Referenced by _vp_psy_clear(), seed_curve(), and setup_tone_curves().

#define P_NOISECURVES 3

Definition at line 33 of file psy.h.

Referenced by _vp_psy_clear(), _vp_psy_init(), and vorbis_encode_noisebias_setup().

Typedef Documentation

typedef struct vorbis_info_psy vorbis_info_psy

Function Documentation

vorbis_info_psy* _vi_psy_copy ( vorbis_info_psy * i )

void* _vi_psy_dup ( void * source )

void _vi_psy_free ( vorbis_info_psy * i )

Definition at line 62 of file psy.c.

References _ogg_free, and memset.

Referenced by vorbis_info_clear().

float _vp_ampmax_decay	(	float	amp,
		vorbis_dsp_state *	vd
	)

Definition at line 830 of file psy.c.

References vorbis_info_psy_global::ampmax_att_per_sec, codec_setup_info::blocksizes, vorbis_info::codec_setup, codec_setup_info::psy_g_param, vorbis_info::rate, vorbis_dsp_state::vi, vi, and vorbis_dsp_state::W.

Referenced by vorbis_analysis_blockout().

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
	)

@ M2 ** The boost problem by the combination of noise normalization and point stereo is eased. However, this is a temporary patch. by Aoyumi @ 2004/04/18

Definition at line 1007 of file psy.c.

References vorbis_info_psy::blockflag, vorbis_info_mapping0::coupling_ang, vorbis_info_mapping0::coupling_mag, vorbis_info_psy_global::coupling_pointlimit, vorbis_info_psy_global::coupling_postpointamp, vorbis_info_psy_global::coupling_prepointamp, vorbis_info_mapping0::coupling_steps, e, fabs(), flag_lossless(), floor(), FLOOR1_fromdB_LOOKUP, i, j, k, vorbis_look_psy::m_val, memcpy, memset, vorbis_look_psy::n, noise_normalize(), vorbis_info_psy::normal_p, vorbis_info_psy::normal_partition, NULL, stereo_threshholds, stereo_threshholds_limited, and vorbis_look_psy::vi.

Referenced by mapping0_forward().

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

Definition at line 699 of file psy.c.

References vorbis_look_psy::bark, bark_noise_hybridmp(), i, vorbis_look_psy::n, NOISE_COMPAND_LEVELS, vorbis_info_psy::noisecompand, vorbis_info_psy::noisewindowfixed, and vorbis_look_psy::vi.

Referenced by mapping0_forward().

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

Definition at line 772 of file psy.c.

References i, vorbis_look_psy::m_val, max, vorbis_look_psy::n, vorbis_info_psy::noisemaxsupp, vorbis_look_psy::noiseoffset, vorbis_info_psy::tone_masteratt, and vorbis_look_psy::vi.

Referenced by mapping0_forward().

void _vp_psy_clear ( vorbis_look_psy * p )

Definition at line 361 of file psy.c.

References _ogg_free, vorbis_look_psy::ath, vorbis_look_psy::bark, i, j, memset, vorbis_look_psy::noiseoffset, vorbis_look_psy::octave, P_BANDS, P_LEVELS, P_NOISECURVES, and vorbis_look_psy::tonecurves.