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Data Fields
SpectralBandReplication Struct Reference

Spectral Band Replication. More...

#include <sbr.h>

Data Fields

int sample_rate
 
int start
 
int ready_for_dequant
 
int id_aac
 
int usac
 
int inter_tes
 
int reset
 
SpectrumParameters spectrum_params
 
int bs_amp_res_header
 
int bs_sbr_preprocessing
 
unsigned bs_coupling
 
AAC_SIGNE k [5]
 k0, k1, k2 More...
 
AAC_SIGNE kx [2]
 kx', and kx respectively, kx is the first QMF subband where SBR is used. More...
 
AAC_SIGNE m [2]
 M' and M respectively, M is the number of QMF subbands that use SBR. More...
 
unsigned kx_and_m_pushed
 
AAC_SIGNE n_master
 The number of frequency bands in f_master. More...
 
SBRData data [2]
 
PSContext ps
 
AAC_SIGNE n [2]
 N_Low and N_High respectively, the number of frequency bands for low and high resolution. More...
 
AAC_SIGNE n_q
 Number of noise floor bands. More...
 
AAC_SIGNE n_lim
 Number of limiter bands. More...
 
uint16_t f_master [49]
 The master QMF frequency grouping. More...
 
uint16_t f_tablelow [25]
 Frequency borders for low resolution SBR. More...
 
uint16_t f_tablehigh [49]
 Frequency borders for high resolution SBR. More...
 
uint16_t f_tablenoise [6]
 Frequency borders for noise floors. More...
 
uint16_t f_tablelim [30]
 Frequency borders for the limiter. More...
 
AAC_SIGNE num_patches
 
uint8_t patch_num_subbands [6]
 
uint8_t patch_start_subband [6]
 
INTFLOAT X_low [32][40][2]
 QMF low frequency input to the HF generator. More...
 
INTFLOAT X_high [64][40][2]
 QMF output of the HF generator. More...
 
INTFLOAT X [2][2][38][64]
 QMF values of the reconstructed signal. More...
 
INTFLOAT alpha0 [64][2]
 Zeroth coefficient used to filter the subband signals. More...
 
INTFLOAT alpha1 [64][2]
 First coefficient used to filter the subband signals. More...
 
AAC_FLOAT e_origmapped [8][48]
 Dequantized envelope scalefactors, remapped. More...
 
AAC_FLOAT q_mapped [8][48]
 Dequantized noise scalefactors, remapped. More...
 
uint8_t s_mapped [8][48]
 Sinusoidal presence, remapped. More...
 
AAC_FLOAT e_curr [8][48]
 Estimated envelope. More...
 
AAC_FLOAT q_m [8][48]
 Amplitude adjusted noise scalefactors. More...
 
AAC_FLOAT s_m [8][48]
 Sinusoidal levels. More...
 
AAC_FLOAT gain [8][48]
 
INTFLOAT qmf_filter_scratch [5][64]
 
AVTXContextmdct_ana
 
av_tx_fn mdct_ana_fn
 
AVTXContextmdct
 
av_tx_fn mdct_fn
 
SBRDSPContext dsp
 
AACSBRContext c
 
Variables associated with bs_header_extra_2
unsigned bs_limiter_bands
 
unsigned bs_limiter_gains
 
unsigned bs_interpol_freq
 
unsigned bs_smoothing_mode
 

Detailed Description

Spectral Band Replication.

Definition at line 143 of file sbr.h.

Field Documentation

◆ sample_rate

int SpectralBandReplication::sample_rate

◆ start

int SpectralBandReplication::start

◆ ready_for_dequant

int SpectralBandReplication::ready_for_dequant

◆ id_aac

int SpectralBandReplication::id_aac

◆ usac

int SpectralBandReplication::usac

◆ inter_tes

int SpectralBandReplication::inter_tes

Definition at line 149 of file sbr.h.

Referenced by copy_usac_default_header(), and read_sbr_envelope().

◆ reset

int SpectralBandReplication::reset

◆ spectrum_params

SpectrumParameters SpectralBandReplication::spectrum_params

◆ bs_amp_res_header

int SpectralBandReplication::bs_amp_res_header

Definition at line 152 of file sbr.h.

Referenced by ff_aac_sbr_decode_usac_data(), read_sbr_grid(), and read_sbr_header().

◆ bs_sbr_preprocessing

int SpectralBandReplication::bs_sbr_preprocessing

Definition at line 153 of file sbr.h.

Referenced by ff_aac_sbr_decode_usac_data().

◆ bs_limiter_bands

unsigned SpectralBandReplication::bs_limiter_bands

◆ bs_limiter_gains

unsigned SpectralBandReplication::bs_limiter_gains

Definition at line 159 of file sbr.h.

Referenced by copy_usac_default_header(), read_sbr_header(), and sbr_gain_calc().

◆ bs_interpol_freq

unsigned SpectralBandReplication::bs_interpol_freq

Definition at line 160 of file sbr.h.

Referenced by copy_usac_default_header(), read_sbr_header(), and sbr_env_estimate().

◆ bs_smoothing_mode

unsigned SpectralBandReplication::bs_smoothing_mode

Definition at line 161 of file sbr.h.

Referenced by copy_usac_default_header(), read_sbr_header(), and sbr_hf_assemble().

◆ bs_coupling

unsigned SpectralBandReplication::bs_coupling

◆ k

AAC_SIGNE SpectralBandReplication::k[5]

k0, k1, k2

Definition at line 164 of file sbr.h.

Referenced by ff_aac_sbr_apply(), sbr_hf_calc_npatches(), sbr_make_f_derived(), and sbr_make_f_master().

◆ kx

AAC_SIGNE SpectralBandReplication::kx[2]

kx', and kx respectively, kx is the first QMF subband where SBR is used.

kx' is its value from the previous frame

Definition at line 167 of file sbr.h.

Referenced by ff_aac_sbr_apply(), ff_aac_sbr_ctx_alloc_init(), ff_aac_sbr_decode_extension(), ff_aac_sbr_decode_usac_data(), sbr_env_estimate(), sbr_gain_calc(), sbr_hf_assemble(), sbr_hf_calc_npatches(), sbr_hf_gen(), sbr_lf_gen(), sbr_make_f_derived(), sbr_make_f_tablelim(), sbr_mapping(), sbr_turnoff(), and sbr_x_gen().

◆ m

AAC_SIGNE SpectralBandReplication::m[2]

M' and M respectively, M is the number of QMF subbands that use SBR.

Definition at line 169 of file sbr.h.

Referenced by ff_aac_sbr_apply(), ff_aac_sbr_decode_extension(), ff_aac_sbr_decode_usac_data(), sbr_env_estimate(), sbr_hf_assemble(), sbr_hf_calc_npatches(), sbr_hf_gen(), sbr_make_f_derived(), sbr_turnoff(), and sbr_x_gen().

◆ kx_and_m_pushed

unsigned SpectralBandReplication::kx_and_m_pushed

◆ n_master

AAC_SIGNE SpectralBandReplication::n_master

The number of frequency bands in f_master.

Definition at line 172 of file sbr.h.

Referenced by sbr_hf_calc_npatches(), sbr_make_f_derived(), and sbr_make_f_master().

◆ data

SBRData SpectralBandReplication::data[2]

◆ ps

PSContext SpectralBandReplication::ps

Definition at line 174 of file sbr.h.

Referenced by ff_aac_sbr_apply(), ff_aac_sbr_ctx_alloc_init(), and read_sbr_extension().

◆ n

AAC_SIGNE SpectralBandReplication::n[2]

N_Low and N_High respectively, the number of frequency bands for low and high resolution.

Definition at line 176 of file sbr.h.

Referenced by ff_aac_sbr_decode_usac_data(), read_sbr_channel_pair_element(), read_sbr_envelope(), read_sbr_single_channel_element(), sbr_dequant(), sbr_env_estimate(), sbr_make_f_derived(), sbr_make_f_tablelim(), and sbr_mapping().

◆ n_q

AAC_SIGNE SpectralBandReplication::n_q

Number of noise floor bands.

Definition at line 178 of file sbr.h.

Referenced by read_sbr_invf(), read_sbr_noise(), sbr_chirp(), sbr_dequant(), sbr_make_f_derived(), and sbr_mapping().

◆ n_lim

AAC_SIGNE SpectralBandReplication::n_lim

Number of limiter bands.

Definition at line 180 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_make_f_tablelim().

◆ f_master

uint16_t SpectralBandReplication::f_master[49]

The master QMF frequency grouping.

Definition at line 182 of file sbr.h.

Referenced by sbr_hf_calc_npatches(), sbr_make_f_derived(), and sbr_make_f_master().

◆ f_tablelow

uint16_t SpectralBandReplication::f_tablelow[25]

Frequency borders for low resolution SBR.

Definition at line 184 of file sbr.h.

Referenced by sbr_env_estimate(), sbr_make_f_derived(), sbr_make_f_tablelim(), and sbr_mapping().

◆ f_tablehigh

uint16_t SpectralBandReplication::f_tablehigh[49]

Frequency borders for high resolution SBR.

Definition at line 186 of file sbr.h.

Referenced by sbr_env_estimate(), sbr_make_f_derived(), and sbr_mapping().

◆ f_tablenoise

uint16_t SpectralBandReplication::f_tablenoise[6]

Frequency borders for noise floors.

Definition at line 188 of file sbr.h.

Referenced by sbr_hf_gen(), sbr_make_f_derived(), and sbr_mapping().

◆ f_tablelim

uint16_t SpectralBandReplication::f_tablelim[30]

Frequency borders for the limiter.

Definition at line 190 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_make_f_tablelim().

◆ num_patches

AAC_SIGNE SpectralBandReplication::num_patches

Definition at line 191 of file sbr.h.

Referenced by sbr_hf_calc_npatches(), sbr_hf_gen(), and sbr_make_f_tablelim().

◆ patch_num_subbands

uint8_t SpectralBandReplication::patch_num_subbands[6]

Definition at line 192 of file sbr.h.

Referenced by sbr_hf_calc_npatches(), sbr_hf_gen(), and sbr_make_f_tablelim().

◆ patch_start_subband

uint8_t SpectralBandReplication::patch_start_subband[6]

Definition at line 193 of file sbr.h.

Referenced by sbr_hf_calc_npatches(), and sbr_hf_gen().

◆ X_low

INTFLOAT SpectralBandReplication::X_low[32][40][2]

QMF low frequency input to the HF generator.

Definition at line 195 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ X_high

INTFLOAT SpectralBandReplication::X_high[64][40][2]

QMF output of the HF generator.

Definition at line 197 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ X

INTFLOAT SpectralBandReplication::X[2][2][38][64]

QMF values of the reconstructed signal.

Definition at line 199 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ alpha0

INTFLOAT SpectralBandReplication::alpha0[64][2]

Zeroth coefficient used to filter the subband signals.

Definition at line 201 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ alpha1

INTFLOAT SpectralBandReplication::alpha1[64][2]

First coefficient used to filter the subband signals.

Definition at line 203 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ e_origmapped

AAC_FLOAT SpectralBandReplication::e_origmapped[8][48]

Dequantized envelope scalefactors, remapped.

Definition at line 205 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_mapping().

◆ q_mapped

AAC_FLOAT SpectralBandReplication::q_mapped[8][48]

Dequantized noise scalefactors, remapped.

Definition at line 207 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_mapping().

◆ s_mapped

uint8_t SpectralBandReplication::s_mapped[8][48]

Sinusoidal presence, remapped.

Definition at line 209 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_mapping().

◆ e_curr

AAC_FLOAT SpectralBandReplication::e_curr[8][48]

Estimated envelope.

Definition at line 211 of file sbr.h.

Referenced by ff_aac_sbr_apply(), and sbr_gain_calc().

◆ q_m

AAC_FLOAT SpectralBandReplication::q_m[8][48]

Amplitude adjusted noise scalefactors.

Definition at line 213 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_hf_assemble().

◆ s_m

AAC_FLOAT SpectralBandReplication::s_m[8][48]

Sinusoidal levels.

Definition at line 215 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_hf_assemble().

◆ gain

AAC_FLOAT SpectralBandReplication::gain[8][48]

Definition at line 216 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_hf_assemble().

◆ qmf_filter_scratch

INTFLOAT SpectralBandReplication::qmf_filter_scratch[5][64]

Definition at line 217 of file sbr.h.

Referenced by ff_aac_sbr_apply().

◆ mdct_ana

AVTXContext* SpectralBandReplication::mdct_ana

Definition at line 218 of file sbr.h.

Referenced by ff_aac_sbr_apply(), ff_aac_sbr_ctx_alloc_init(), and ff_aac_sbr_ctx_close().

◆ mdct_ana_fn

av_tx_fn SpectralBandReplication::mdct_ana_fn

Definition at line 219 of file sbr.h.

Referenced by ff_aac_sbr_apply(), and ff_aac_sbr_ctx_alloc_init().

◆ mdct

AVTXContext* SpectralBandReplication::mdct

Definition at line 220 of file sbr.h.

Referenced by ff_aac_sbr_apply(), ff_aac_sbr_ctx_alloc_init(), and ff_aac_sbr_ctx_close().

◆ mdct_fn

av_tx_fn SpectralBandReplication::mdct_fn

Definition at line 221 of file sbr.h.

Referenced by ff_aac_sbr_apply(), and ff_aac_sbr_ctx_alloc_init().

◆ dsp

SBRDSPContext SpectralBandReplication::dsp

◆ c

AACSBRContext SpectralBandReplication::c

Definition at line 223 of file sbr.h.

Referenced by ff_aac_sbr_apply(), and ff_aac_sbr_ctx_alloc_init().


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