SBRData Struct Reference

Spectral Band Replication per channel data. More...

#include <sbr.h>

Data Fields
Main bitstream data variables
unsigned	bs_frame_class
unsigned	bs_add_harmonic_flag
unsigned	bs_num_env
uint8_t	bs_freq_res [7]
unsigned	bs_num_noise
uint8_t	bs_df_env [5]
uint8_t	bs_df_noise [2]
uint8_t	bs_invf_mode [2][5]
uint8_t	bs_add_harmonic [48]
unsigned	bs_amp_res
State variables
float	synthesis_filterbank_samples [SBR_SYNTHESIS_BUF_SIZE]
float	analysis_filterbank_samples [1312]
int	synthesis_filterbank_samples_offset
int	e_a [2]
	l_APrev and l_A
float	bw_array [5]
	Chirp factors.
float	W [2][32][32][2]
	QMF values of the original signal.
float	Y [2][38][64][2]
	QMF output of the HF adjustor.
float	g_temp [42][48]
float	q_temp [42][48]
uint8_t	s_indexmapped [8][48]
float	env_facs [6][48]
	Envelope scalefactors.
float	noise_facs [3][5]
	Noise scalefactors.
uint8_t	t_env [8]
	Envelope time borders.
uint8_t	t_env_num_env_old
	Envelope time border of the last envelope of the previous frame.
uint8_t	t_q [3]
	Noise time borders.
unsigned	f_indexnoise
unsigned	f_indexsine

---

Detailed Description

Spectral Band Replication per channel data.

Definition at line 59 of file sbr.h.

---

Field Documentation

float SBRData::analysis_filterbank_samples[1312]

Definition at line 81 of file sbr.h.

Referenced by ff_sbr_apply().

uint8_t SBRData::bs_add_harmonic[48]

Definition at line 72 of file sbr.h.

Referenced by read_sbr_channel_pair_element(), read_sbr_single_channel_element(), and sbr_mapping().

unsigned SBRData::bs_add_harmonic_flag

Definition at line 65 of file sbr.h.

Referenced by read_sbr_channel_pair_element(), read_sbr_single_channel_element(), and sbr_mapping().

unsigned SBRData::bs_amp_res

Definition at line 73 of file sbr.h.

Referenced by copy_sbr_grid(), read_sbr_envelope(), read_sbr_grid(), and sbr_dequant().

uint8_t SBRData::bs_df_env[5]

Definition at line 69 of file sbr.h.

Referenced by read_sbr_dtdf(), and read_sbr_envelope().

uint8_t SBRData::bs_df_noise[2]

Definition at line 70 of file sbr.h.

Referenced by read_sbr_dtdf(), and read_sbr_noise().

unsigned SBRData::bs_frame_class

Definition at line 64 of file sbr.h.

Referenced by copy_sbr_grid(), and read_sbr_grid().

uint8_t SBRData::bs_freq_res[7]

Definition at line 67 of file sbr.h.

Referenced by copy_sbr_grid(), read_sbr_envelope(), read_sbr_grid(), sbr_dequant(), sbr_env_estimate(), and sbr_mapping().

uint8_t SBRData::bs_invf_mode[2][5]

Definition at line 71 of file sbr.h.

Referenced by read_sbr_channel_pair_element(), read_sbr_invf(), and sbr_chirp().

unsigned SBRData::bs_num_env

Definition at line 66 of file sbr.h.

Referenced by copy_sbr_grid(), ff_sbr_apply(), read_sbr_dtdf(), read_sbr_envelope(), read_sbr_grid(), sbr_dequant(), sbr_env_estimate(), sbr_gain_calc(), sbr_hf_assemble(), and sbr_mapping().

unsigned SBRData::bs_num_noise

Definition at line 68 of file sbr.h.

Referenced by copy_sbr_grid(), read_sbr_dtdf(), read_sbr_grid(), read_sbr_noise(), sbr_dequant(), and sbr_mapping().

float SBRData::bw_array[5]

Chirp factors.

Definition at line 86 of file sbr.h.

Referenced by ff_sbr_apply(), and sbr_chirp().

int SBRData::e_a[2]

l_APrev and l_A

Definition at line 84 of file sbr.h.

Referenced by copy_sbr_grid(), ff_aac_sbr_ctx_init(), ff_sbr_apply(), and read_sbr_grid().

float SBRData::env_facs[6][48]

Envelope scalefactors.

Definition at line 95 of file sbr.h.

Referenced by read_sbr_envelope(), sbr_dequant(), and sbr_mapping().

unsigned SBRData::f_indexnoise

Definition at line 104 of file sbr.h.

Referenced by sbr_hf_assemble(), and sbr_make_f_derived().

unsigned SBRData::f_indexsine

Definition at line 105 of file sbr.h.

Referenced by sbr_hf_assemble().

float SBRData::g_temp[42][48]

Definition at line 91 of file sbr.h.

Referenced by sbr_hf_assemble().

float SBRData::noise_facs[3][5]

Noise scalefactors.

Definition at line 97 of file sbr.h.

Referenced by read_sbr_noise(), sbr_dequant(), and sbr_mapping().

float SBRData::q_temp[42][48]

Definition at line 92 of file sbr.h.

Referenced by sbr_hf_assemble().

uint8_t SBRData::s_indexmapped[8][48]

Definition at line 93 of file sbr.h.

Referenced by sbr_gain_calc(), and sbr_mapping().

float SBRData::synthesis_filterbank_samples[SBR_SYNTHESIS_BUF_SIZE]

Definition at line 80 of file sbr.h.

Referenced by ff_sbr_apply().

int SBRData::synthesis_filterbank_samples_offset

Definition at line 82 of file sbr.h.

Referenced by ff_aac_sbr_ctx_init(), and ff_sbr_apply().

uint8_t SBRData::t_env[8]

Envelope time borders.

Definition at line 99 of file sbr.h.

Referenced by copy_sbr_grid(), ff_sbr_apply(), read_sbr_grid(), sbr_env_estimate(), sbr_hf_assemble(), and sbr_mapping().

uint8_t SBRData::t_env_num_env_old

Envelope time border of the last envelope of the previous frame.

Definition at line 101 of file sbr.h.

Referenced by copy_sbr_grid(), read_sbr_grid(), sbr_hf_assemble(), and sbr_x_gen().

uint8_t SBRData::t_q[3]

Noise time borders.

Definition at line 103 of file sbr.h.

Referenced by copy_sbr_grid(), read_sbr_grid(), and sbr_mapping().

float SBRData::W[2][32][32][2]

QMF values of the original signal.

Definition at line 88 of file sbr.h.

Referenced by ff_sbr_apply().

float SBRData::Y[2][38][64][2]

QMF output of the HF adjustor.

Definition at line 90 of file sbr.h.

Referenced by ff_sbr_apply().

---

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

• libavcodec/sbr.h