Data Fields
AMRWBFrame	frame
	AMRWB parameters decoded from bitstream. More...

enum Mode	fr_cur_mode
	mode index of current frame More...

uint8_t	fr_quality
	frame quality index (FQI) More...

float	isf_cur [LP_ORDER]
	working ISF vector from current frame More...

float	isf_q_past [LP_ORDER]
	quantized ISF vector of the previous frame More...

float	isf_past_final [LP_ORDER]
	final processed ISF vector of the previous frame More...

double	isp [4][LP_ORDER]
	ISP vectors from current frame. More...

double	isp_sub4_past [LP_ORDER]
	ISP vector for the 4th subframe of the previous frame. More...

float	lp_coef [4][LP_ORDER]
	Linear Prediction Coefficients from ISP vector. More...

uint8_t	base_pitch_lag
	integer part of pitch lag for the next relative subframe More...

uint8_t	pitch_lag_int
	integer part of pitch lag of the previous subframe More...

float	excitation_buf [AMRWB_P_DELAY_MAX+LP_ORDER+2+AMRWB_SFR_SIZE]
	current excitation and all necessary excitation history More...

float *	excitation
	points to current excitation in excitation_buf[] More...

float	pitch_vector [AMRWB_SFR_SIZE]
	adaptive codebook (pitch) vector for current subframe More...

float	fixed_vector [AMRWB_SFR_SIZE]
	algebraic codebook (fixed) vector for current subframe More...

float	prediction_error [4]
	quantified prediction errors {20log10(^gamma_gc)} for previous four subframes More...

float	pitch_gain [6]
	quantified pitch gains for the current and previous five subframes More...

float	fixed_gain [2]
	quantified fixed gains for the current and previous subframes More...

float	tilt_coef
	{beta_1} related to the voicing of the previous subframe More...

float	prev_sparse_fixed_gain
	previous fixed gain; used by anti-sparseness to determine "onset" More...

uint8_t	prev_ir_filter_nr
	previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none More...

float	prev_tr_gain
	previous initial gain used by noise enhancer for threshold More...

float	samples_az [LP_ORDER+AMRWB_SFR_SIZE]
	low-band samples and memory from synthesis at 12.8kHz More...

float	samples_up [UPS_MEM_SIZE+AMRWB_SFR_SIZE]
	low-band samples and memory processed for upsampling More...

float	samples_hb [LP_ORDER_16k+AMRWB_SFR_SIZE_16k]
	high-band samples and memory from synthesis at 16kHz More...

float	hpf_31_mem [2]

float	hpf_400_mem [2]
	previous values in the high pass filters More...

float	demph_mem [1]
	previous value in the de-emphasis filter More...

float	bpf_6_7_mem [HB_FIR_SIZE]
	previous values in the high-band band pass filter More...

float	lpf_7_mem [HB_FIR_SIZE]
	previous values in the high-band low pass filter More...

AVLFG	prng
	random number generator for white noise excitation More...

uint8_t	first_frame
	flag active during decoding of the first frame More...

ACELPFContext	acelpf_ctx
	context for filters for ACELP-based codecs More...

ACELPVContext	acelpv_ctx
	context for vector operations for ACELP-based codecs More...

CELPFContext	celpf_ctx
	context for filters for CELP-based codecs More...

CELPMContext	celpm_ctx
	context for fixed point math operations More...

AVClass *	av_class

void *	state

int	mode

int	last_bitrate

int	allow_dtx

Detailed Description

Definition at line 47 of file amrwbdec.c.

Field Documentation

◆ frame

AMRWBFrame AMRWBContext::frame

AMRWB parameters decoded from bitstream.

Definition at line 48 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ fr_cur_mode

enum Mode AMRWBContext::fr_cur_mode

mode index of current frame

Definition at line 49 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), anti_sparseness(), decode_mime_header(), decode_pitch_vector(), find_hb_gain(), hb_synthesis(), and synthesis().

◆ fr_quality

uint8_t AMRWBContext::fr_quality

frame quality index (FQI)

Definition at line 50 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and decode_mime_header().

◆ isf_cur

float AMRWBContext::isf_cur[LP_ORDER]

working ISF vector from current frame

Definition at line 51 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ isf_q_past

float AMRWBContext::isf_q_past[LP_ORDER]

quantized ISF vector of the previous frame

Definition at line 52 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ isf_past_final

float AMRWBContext::isf_past_final[LP_ORDER]

final processed ISF vector of the previous frame

Definition at line 53 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and amrwb_decode_init().

◆ isp

double AMRWBContext::isp[4][LP_ORDER]

ISP vectors from current frame.

Definition at line 54 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ isp_sub4_past

double AMRWBContext::isp_sub4_past[LP_ORDER]

ISP vector for the 4th subframe of the previous frame.

Definition at line 55 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ lp_coef

float AMRWBContext::lp_coef[4][LP_ORDER]

Linear Prediction Coefficients from ISP vector.

Definition at line 57 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and hb_synthesis().

◆ base_pitch_lag

uint8_t AMRWBContext::base_pitch_lag

integer part of pitch lag for the next relative subframe

Definition at line 59 of file amrwbdec.c.

Referenced by decode_pitch_vector().

◆ pitch_lag_int

uint8_t AMRWBContext::pitch_lag_int

integer part of pitch lag of the previous subframe

Definition at line 60 of file amrwbdec.c.

Referenced by decode_pitch_vector(), and pitch_sharpening().

◆ excitation_buf

float AMRWBContext::excitation_buf[AMRWB_P_DELAY_MAX+LP_ORDER+2+AMRWB_SFR_SIZE]

current excitation and all necessary excitation history

Definition at line 62 of file amrwbdec.c.

Referenced by amrwb_decode_init(), and update_sub_state().

◆ excitation

float* AMRWBContext::excitation

points to current excitation in excitation_buf[]

Definition at line 63 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), amrwb_decode_init(), and decode_pitch_vector().

◆ pitch_vector

float AMRWBContext::pitch_vector[AMRWB_SFR_SIZE]

adaptive codebook (pitch) vector for current subframe

Definition at line 65 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), decode_pitch_vector(), and synthesis().

◆ fixed_vector

float AMRWBContext::fixed_vector[AMRWB_SFR_SIZE]

algebraic codebook (fixed) vector for current subframe

Definition at line 66 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and anti_sparseness().

◆ prediction_error

float AMRWBContext::prediction_error[4]

quantified prediction errors {20log10(^gamma_gc)} for previous four subframes

Definition at line 68 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and amrwb_decode_init().

◆ pitch_gain

float AMRWBContext::pitch_gain[6]

quantified pitch gains for the current and previous five subframes

Definition at line 69 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), anti_sparseness(), synthesis(), and update_sub_state().

◆ fixed_gain

float AMRWBContext::fixed_gain[2]

quantified fixed gains for the current and previous subframes

Definition at line 70 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), anti_sparseness(), and update_sub_state().

◆ tilt_coef

float AMRWBContext::tilt_coef

{beta_1} related to the voicing of the previous subframe

Definition at line 72 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and pitch_sharpening().

◆ prev_sparse_fixed_gain

float AMRWBContext::prev_sparse_fixed_gain

previous fixed gain; used by anti-sparseness to determine "onset"

Definition at line 74 of file amrwbdec.c.

◆ prev_ir_filter_nr

uint8_t AMRWBContext::prev_ir_filter_nr

previous impulse response filter "impNr": 0 - strong, 1 - medium, 2 - none

Definition at line 75 of file amrwbdec.c.

Referenced by anti_sparseness().

◆ prev_tr_gain

float AMRWBContext::prev_tr_gain

previous initial gain used by noise enhancer for threshold

Definition at line 76 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ samples_az

float AMRWBContext::samples_az[LP_ORDER+AMRWB_SFR_SIZE]

low-band samples and memory from synthesis at 12.8kHz

Definition at line 78 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and update_sub_state().

◆ samples_up

float AMRWBContext::samples_up[UPS_MEM_SIZE+AMRWB_SFR_SIZE]

low-band samples and memory processed for upsampling

Definition at line 79 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and update_sub_state().

◆ samples_hb

float AMRWBContext::samples_hb[LP_ORDER_16k+AMRWB_SFR_SIZE_16k]

high-band samples and memory from synthesis at 16kHz

Definition at line 80 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and update_sub_state().

◆ hpf_31_mem

float AMRWBContext::hpf_31_mem[2]

Definition at line 82 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ hpf_400_mem

float AMRWBContext::hpf_400_mem[2]

previous values in the high pass filters

Definition at line 82 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ demph_mem

float AMRWBContext::demph_mem[1]

previous value in the de-emphasis filter

Definition at line 83 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ bpf_6_7_mem

float AMRWBContext::bpf_6_7_mem[HB_FIR_SIZE]

previous values in the high-band band pass filter

Definition at line 84 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ lpf_7_mem

float AMRWBContext::lpf_7_mem[HB_FIR_SIZE]

previous values in the high-band low pass filter

Definition at line 85 of file amrwbdec.c.

Referenced by amrwb_decode_frame().

◆ prng

AVLFG AMRWBContext::prng

random number generator for white noise excitation

Definition at line 87 of file amrwbdec.c.

Referenced by amrwb_decode_init(), and scaled_hb_excitation().

◆ first_frame

uint8_t AMRWBContext::first_frame

flag active during decoding of the first frame

Definition at line 88 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), and amrwb_decode_init().

◆ acelpf_ctx

ACELPFContext AMRWBContext::acelpf_ctx

context for filters for ACELP-based codecs

Definition at line 89 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), amrwb_decode_init(), and decode_pitch_vector().

◆ acelpv_ctx

ACELPVContext AMRWBContext::acelpv_ctx

context for vector operations for ACELP-based codecs

Definition at line 90 of file amrwbdec.c.

Referenced by amrwb_decode_init(), hb_synthesis(), and synthesis().

◆ celpf_ctx

CELPFContext AMRWBContext::celpf_ctx

context for filters for CELP-based codecs

Definition at line 91 of file amrwbdec.c.

Referenced by amrwb_decode_init(), hb_synthesis(), and synthesis().

◆ celpm_ctx

CELPMContext AMRWBContext::celpm_ctx

context for fixed point math operations

Definition at line 92 of file amrwbdec.c.

Referenced by amrwb_decode_frame(), amrwb_decode_init(), find_hb_gain(), scaled_hb_excitation(), and synthesis().

◆ av_class

AVClass* AMRWBContext::av_class

Definition at line 36 of file libvo-amrwbenc.c.

◆ state

void* AMRWBContext::state

Definition at line 37 of file libvo-amrwbenc.c.

Referenced by amr_decode_fix_avctx(), amr_wb_encode_close(), amr_wb_encode_frame(), and amr_wb_encode_init().

◆ mode

int AMRWBContext::mode

Definition at line 38 of file libvo-amrwbenc.c.

Referenced by amr_wb_encode_frame(), amr_wb_encode_init(), and decode_fixed_vector().

◆ last_bitrate

int AMRWBContext::last_bitrate

Definition at line 39 of file libvo-amrwbenc.c.

Referenced by amr_wb_encode_frame(), and amr_wb_encode_init().

◆ allow_dtx

int AMRWBContext::allow_dtx

Definition at line 40 of file libvo-amrwbenc.c.

Referenced by amr_wb_encode_frame().

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

libavcodec/amrwbdec.c
libavcodec/libvo-amrwbenc.c

Data Fields

Detailed Description

Field Documentation

◆ frame

◆ fr_cur_mode

◆ fr_quality

◆ isf_cur

◆ isf_q_past

◆ isf_past_final

◆ isp

◆ isp_sub4_past

◆ lp_coef

◆ base_pitch_lag

◆ pitch_lag_int

◆ excitation_buf

◆ excitation

◆ pitch_vector

◆ fixed_vector

◆ prediction_error

◆ pitch_gain

◆ fixed_gain

◆ tilt_coef

◆ prev_sparse_fixed_gain

◆ prev_ir_filter_nr

◆ prev_tr_gain

◆ samples_az

◆ samples_up

◆ samples_hb

◆ hpf_31_mem

◆ hpf_400_mem

◆ demph_mem

◆ bpf_6_7_mem

◆ lpf_7_mem

◆ prng

◆ first_frame

◆ acelpf_ctx

◆ acelpv_ctx

◆ celpf_ctx

◆ celpm_ctx

◆ av_class

◆ state

◆ mode

◆ last_bitrate

◆ allow_dtx