AC3Block Struct Reference

Data for a single audio block. More...

#include <libavcodec/ac3enc.h>

Data Fields
CoefType **	mdct_coef
	MDCT coefficients. More...
int32_t **	fixed_coef
	fixed-point MDCT coefficients More...
uint8_t **	exp
	original exponents More...
uint8_t **	grouped_exp
	grouped exponents More...
int16_t **	psd
	psd per frequency bin More...
int16_t **	band_psd
	psd per critical band More...
int16_t **	mask
	masking curve More...
uint16_t **	qmant
	quantized mantissas More...
uint8_t **	cpl_coord_exp
	coupling coord exponents (cplcoexp) More...
uint8_t **	cpl_coord_mant
	coupling coord mantissas (cplcomant) More...
uint8_t	coeff_shift [AC3_MAX_CHANNELS]
	fixed-point coefficient shift values More...
uint8_t	new_rematrixing_strategy
	send new rematrixing flags in this block More...
int	num_rematrixing_bands
	number of rematrixing bands More...
uint8_t	rematrixing_flags [4]
	rematrixing flags More...
int	new_cpl_strategy
	send new coupling strategy More...
int	cpl_in_use
	coupling in use for this block (cplinu) More...
uint8_t	channel_in_cpl [AC3_MAX_CHANNELS]
	channel in coupling (chincpl) More...
int	num_cpl_channels
	number of channels in coupling More...
uint8_t	new_cpl_coords [AC3_MAX_CHANNELS]
	send new coupling coordinates (cplcoe) More...
uint8_t	cpl_master_exp [AC3_MAX_CHANNELS]
	coupling coord master exponents (mstrcplco) More...
int	new_snr_offsets
	send new SNR offsets More...
int	new_cpl_leak
	send new coupling leak info More...
int	end_freq [AC3_MAX_CHANNELS]
	end frequency bin (endmant) More...

Detailed Description

Data for a single audio block.

Definition at line 133 of file ac3enc.h.

Field Documentation

mdct_coef

CoefType** AC3Block::mdct_coef

MDCT coefficients.

Definition at line 134 of file ac3enc.h.

Referenced by allocate_buffers(), apply_channel_coupling(), apply_mdct(), compute_rematrixing_strategy(), encode_frame(), ff_ac3_encode_close(), and scale_coefficients().

fixed_coef

int32_t** AC3Block::fixed_coef

fixed-point MDCT coefficients

Definition at line 135 of file ac3enc.h.

Referenced by allocate_buffers(), extract_exponents(), ff_ac3_apply_rematrixing(), ff_ac3_encode_close(), and ff_ac3_quantize_mantissas().

exp

uint8_t** AC3Block::exp

original exponents

Definition at line 136 of file ac3enc.h.

Referenced by allocate_buffers(), bit_alloc_masking(), compute_exp_strategy(), encode_exponents(), extract_exponents(), ff_ac3_encode_close(), ff_ac3_group_exponents(), and ff_ac3_quantize_mantissas().

grouped_exp

uint8_t** AC3Block::grouped_exp

grouped exponents

Definition at line 137 of file ac3enc.h.

Referenced by allocate_buffers(), ff_ac3_encode_close(), ff_ac3_group_exponents(), and output_audio_block().

psd

int16_t** AC3Block::psd

psd per frequency bin

Definition at line 138 of file ac3enc.h.

Referenced by allocate_buffers(), bit_alloc(), bit_alloc_masking(), and ff_ac3_encode_close().

band_psd

int16_t** AC3Block::band_psd

psd per critical band

Definition at line 139 of file ac3enc.h.

Referenced by allocate_buffers(), bit_alloc_masking(), and ff_ac3_encode_close().

mask

int16_t** AC3Block::mask

masking curve

Definition at line 140 of file ac3enc.h.

Referenced by allocate_buffers(), bit_alloc(), bit_alloc_masking(), and ff_ac3_encode_close().

qmant

uint16_t** AC3Block::qmant

quantized mantissas

Definition at line 141 of file ac3enc.h.

Referenced by allocate_buffers(), ff_ac3_encode_close(), ff_ac3_quantize_mantissas(), and output_audio_block().

cpl_coord_exp

uint8_t** AC3Block::cpl_coord_exp

coupling coord exponents (cplcoexp)

Definition at line 142 of file ac3enc.h.

Referenced by allocate_buffers(), apply_channel_coupling(), ff_ac3_encode_close(), and output_audio_block().

cpl_coord_mant

uint8_t** AC3Block::cpl_coord_mant

coupling coord mantissas (cplcomant)

Definition at line 143 of file ac3enc.h.

Referenced by allocate_buffers(), apply_channel_coupling(), ff_ac3_encode_close(), and output_audio_block().

coeff_shift

uint8_t AC3Block::coeff_shift[AC3_MAX_CHANNELS]

fixed-point coefficient shift values

Definition at line 144 of file ac3enc.h.

Referenced by apply_mdct(), and scale_coefficients().

new_rematrixing_strategy

uint8_t AC3Block::new_rematrixing_strategy

send new rematrixing flags in this block

Definition at line 145 of file ac3enc.h.

Referenced by compute_rematrixing_strategy(), count_frame_bits(), ff_ac3_apply_rematrixing(), and output_audio_block().

num_rematrixing_bands

int AC3Block::num_rematrixing_bands

number of rematrixing bands

Definition at line 146 of file ac3enc.h.

Referenced by compute_rematrixing_strategy(), count_frame_bits(), ff_ac3_apply_rematrixing(), and output_audio_block().

rematrixing_flags

uint8_t AC3Block::rematrixing_flags[4]

rematrixing flags

Definition at line 147 of file ac3enc.h.

Referenced by compute_rematrixing_strategy(), ff_ac3_apply_rematrixing(), and output_audio_block().

new_cpl_strategy

int AC3Block::new_cpl_strategy

send new coupling strategy

Definition at line 148 of file ac3enc.h.

Referenced by count_frame_bits(), ff_ac3_compute_coupling_strategy(), ff_eac3_output_frame_header(), and output_audio_block().

cpl_in_use

int AC3Block::cpl_in_use

coupling in use for this block (cplinu)

Definition at line 149 of file ac3enc.h.

Referenced by apply_channel_coupling(), bit_alloc(), bit_alloc_masking(), compute_exp_strategy(), compute_rematrixing_strategy(), count_exponent_bits(), count_frame_bits(), count_mantissa_bits_update_ch(), encode_exponents(), ff_ac3_compute_coupling_strategy(), ff_ac3_group_exponents(), ff_ac3_quantize_mantissas(), ff_eac3_output_frame_header(), ff_eac3_set_cpl_states(), and output_audio_block().

channel_in_cpl

uint8_t AC3Block::channel_in_cpl[AC3_MAX_CHANNELS]

channel in coupling (chincpl)

Definition at line 150 of file ac3enc.h.

Referenced by apply_channel_coupling(), compute_exp_strategy(), count_frame_bits(), ff_ac3_compute_coupling_strategy(), ff_ac3_quantize_mantissas(), ff_eac3_set_cpl_states(), and output_audio_block().

num_cpl_channels

int AC3Block::num_cpl_channels

number of channels in coupling

Definition at line 151 of file ac3enc.h.

Referenced by ff_ac3_compute_coupling_strategy().

new_cpl_coords

uint8_t AC3Block::new_cpl_coords[AC3_MAX_CHANNELS]

send new coupling coordinates (cplcoe)

Definition at line 152 of file ac3enc.h.

Referenced by apply_channel_coupling(), count_frame_bits(), ff_eac3_set_cpl_states(), and output_audio_block().

cpl_master_exp

uint8_t AC3Block::cpl_master_exp[AC3_MAX_CHANNELS]

coupling coord master exponents (mstrcplco)

Definition at line 153 of file ac3enc.h.

Referenced by apply_channel_coupling(), and output_audio_block().

new_snr_offsets

int AC3Block::new_snr_offsets

send new SNR offsets

Definition at line 154 of file ac3enc.h.

Referenced by count_frame_bits(), ff_ac3_compute_coupling_strategy(), and output_audio_block().

new_cpl_leak

int AC3Block::new_cpl_leak

send new coupling leak info

Definition at line 155 of file ac3enc.h.

Referenced by count_frame_bits(), ff_ac3_compute_coupling_strategy(), ff_eac3_set_cpl_states(), and output_audio_block().

end_freq

int AC3Block::end_freq[AC3_MAX_CHANNELS]

end frequency bin (endmant)

Definition at line 156 of file ac3enc.h.

Referenced by bit_alloc(), bit_alloc_masking(), compute_exp_strategy(), compute_rematrixing_strategy(), count_exponent_bits(), count_mantissa_bits_update_ch(), encode_exponents(), ff_ac3_apply_rematrixing(), ff_ac3_compute_coupling_strategy(), ff_ac3_group_exponents(), ff_ac3_quantize_mantissas(), output_audio_block(), and set_bandwidth().

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

• libavcodec/ac3enc.h