NMRSlot Struct Reference

NMR coder per-band candidate cost curves (~96 KiB) and rate-control carry-over. More...

#include <aacenc.h>

Data Fields
struct SingleChannelElement *	sce
int	si
	curve-bank index (nd/nb slot) More...
int	cur_ch
	encoder channel index (psy/cache context) More...
int	nbnd
	coded-band count, 0 = nothing codeable More...
int	is8
	EIGHT_SHORT frame. More...
int	bidx [128]
	sce band index (w*16+g) More...
int	bw [128]
int	bg [128]
int	bst [128]
	window group, swb, coef start More...
int	blo [128]
	finest candidate scalefactor More...
int	bnc [128]
	number of candidates More...
int	chosen [128]
int	act [128]
	active (non-PNS) band coding order More...
int	nact
int	minsf [128]
float	maxvals [128]
float	thr [128]
	allocation-law effective threshold More...
float	thr_real [128]
	real masking threshold (PNS gates) More...
float	tnsg [128]
	TNS synthesis gain per band for THIS solve (1 = uncovered), M/S-aware (pair max) More...
float	pener [128]
	band energy (PNS noise target) More...
float	pspread [128]
	band tonality spread (1 = noise) More...
uint8_t	is_pns [128]
	band coded as noise More...

Detailed Description

NMR coder per-band candidate cost curves (~96 KiB) and rate-control carry-over.

Per-channel trellis state for one solve. A channel pair (CPE) is solved jointly against a pooled budget: the first channel's setup is stored here and committed together with the second channel under one shared lambda.

Definition at line 181 of file aacenc.h.

Field Documentation

sce

struct SingleChannelElement* NMRSlot::sce

Definition at line 182 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

si

int NMRSlot::si

curve-bank index (nd/nb slot)

Definition at line 183 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

cur_ch

int NMRSlot::cur_ch

encoder channel index (psy/cache context)

Definition at line 184 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

nbnd

int NMRSlot::nbnd

coded-band count, 0 = nothing codeable

Definition at line 185 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

is8

int NMRSlot::is8

EIGHT_SHORT frame.

Definition at line 186 of file aacenc.h.

Referenced by nmr_setup_channel().

bidx

int NMRSlot::bidx[128]

sce band index (w*16+g)

Definition at line 187 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

bw

int NMRSlot::bw[128]

Definition at line 188 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

bg

int NMRSlot::bg[128]

Definition at line 188 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

bst

int NMRSlot::bst[128]

window group, swb, coef start

Definition at line 188 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

blo

int NMRSlot::blo[128]

finest candidate scalefactor

Definition at line 189 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

bnc

int NMRSlot::bnc[128]

number of candidates

Definition at line 190 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

chosen

int NMRSlot::chosen[128]

Definition at line 191 of file aacenc.h.

Referenced by nmr_commit_channel(), and nmr_solve_group().

act

int NMRSlot::act[128]

active (non-PNS) band coding order

Definition at line 192 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

nact

int NMRSlot::nact

Definition at line 193 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

minsf

int NMRSlot::minsf[128]

Definition at line 194 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

maxvals

float NMRSlot::maxvals[128]

Definition at line 195 of file aacenc.h.

Referenced by nmr_commit_channel(), nmr_setup_channel(), and nmr_solve_group().

thr

float NMRSlot::thr[128]

allocation-law effective threshold

Definition at line 196 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

thr_real

float NMRSlot::thr_real[128]

real masking threshold (PNS gates)

Definition at line 197 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

tnsg

float NMRSlot::tnsg[128]

TNS synthesis gain per band for THIS solve (1 = uncovered), M/S-aware (pair max)

Definition at line 198 of file aacenc.h.

Referenced by nmr_setup_channel(), and nmr_solve_group().

pener

float NMRSlot::pener[128]

band energy (PNS noise target)

Definition at line 199 of file aacenc.h.

Referenced by nmr_commit_channel(), and nmr_setup_channel().

pspread

float NMRSlot::pspread[128]

band tonality spread (1 = noise)

Definition at line 200 of file aacenc.h.

Referenced by nmr_commit_channel(), and nmr_setup_channel().

is_pns

uint8_t NMRSlot::is_pns[128]

band coded as noise

Definition at line 201 of file aacenc.h.

Referenced by nmr_commit_channel(), and nmr_setup_channel().

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The documentation for this struct was generated from the following file:

• libavcodec/aacenc.h