ALSDecContext Struct Reference

Data Fields
AVCodecContext *	avctx
AVFrame	frame
ALSSpecificConfig	sconf
GetBitContext	gb
DSPContext	dsp
const AVCRC *	crc_table
uint32_t	crc_org
	CRC value of the original input data.
uint32_t	crc
	CRC value calculated from decoded data.
unsigned int	cur_frame_length
	length of the current frame to decode
unsigned int	frame_id
	the frame ID / number of the current frame
unsigned int	js_switch
	if true, joint-stereo decoding is enforced
unsigned int	cs_switch
	if true, channel rearrangement is done
unsigned int	num_blocks
	number of blocks used in the current frame
unsigned int	s_max
	maximum Rice parameter allowed in entropy coding
uint8_t *	bgmc_lut
	pointer at lookup tables used for BGMC
int *	bgmc_lut_status
	pointer at lookup table status flags used for BGMC
int	ltp_lag_length
	number of bits used for ltp lag value
int *	const_block
	contains const_block flags for all channels
unsigned int *	shift_lsbs
	contains shift_lsbs flags for all channels
unsigned int *	opt_order
	contains opt_order flags for all channels
int *	store_prev_samples
	contains store_prev_samples flags for all channels
int *	use_ltp
	contains use_ltp flags for all channels
int *	ltp_lag
	contains ltp lag values for all channels
int **	ltp_gain
	gain values for ltp 5-tap filter for a channel
int *	ltp_gain_buffer
	contains all gain values for ltp 5-tap filter
int32_t **	quant_cof
	quantized parcor coefficients for a channel
int32_t *	quant_cof_buffer
	contains all quantized parcor coefficients
int32_t **	lpc_cof
	coefficients of the direct form prediction filter for a channel
int32_t *	lpc_cof_buffer
	contains all coefficients of the direct form prediction filter
int32_t *	lpc_cof_reversed_buffer
	temporary buffer to set up a reversed versio of lpc_cof_buffer
ALSChannelData **	chan_data
	channel data for multi-channel correlation
ALSChannelData *	chan_data_buffer
	contains channel data for all channels
int *	reverted_channels
	stores a flag for each reverted channel
int32_t *	prev_raw_samples
	contains unshifted raw samples from the previous block
int32_t **	raw_samples
	decoded raw samples for each channel
int32_t *	raw_buffer
	contains all decoded raw samples including carryover samples
uint8_t *	crc_buffer
	buffer of byte order corrected samples used for CRC check

Detailed Description

Definition at line 193 of file alsdec.c.

Field Documentation

AVCodecContext* ALSDecContext::avctx

Definition at line 194 of file alsdec.c.

Referenced by decode_blocks(), decode_frame(), decode_init(), dprint_specific_config(), read_channel_data(), read_const_block_data(), read_frame_data(), read_specific_config(), read_var_block_data(), and revert_channel_correlation().

AVFrame ALSDecContext::frame

Definition at line 195 of file alsdec.c.

Referenced by decode_frame(), and decode_init().

ALSSpecificConfig ALSDecContext::sconf

Definition at line 196 of file alsdec.c.

Referenced by check_specific_config(), decode_blocks(), decode_end(), decode_frame(), decode_init(), decode_var_block_data(), dprint_specific_config(), get_block_sizes(), read_const_block_data(), read_frame_data(), read_specific_config(), and read_var_block_data().

GetBitContext ALSDecContext::gb

Definition at line 197 of file alsdec.c.

Referenced by decode_frame(), get_block_sizes(), read_block(), read_channel_data(), read_const_block_data(), read_frame_data(), and read_var_block_data().

DSPContext ALSDecContext::dsp

Definition at line 198 of file alsdec.c.

Referenced by decode_frame(), and decode_init().

const AVCRC* ALSDecContext::crc_table

Definition at line 199 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

uint32_t ALSDecContext::crc_org

CRC value of the original input data.

Definition at line 200 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

uint32_t ALSDecContext::crc

CRC value calculated from decoded data.

Definition at line 201 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

unsigned int ALSDecContext::cur_frame_length

length of the current frame to decode

Definition at line 202 of file alsdec.c.

Referenced by decode_frame(), decode_init(), get_block_sizes(), and read_specific_config().

unsigned int ALSDecContext::frame_id

the frame ID / number of the current frame

Definition at line 203 of file alsdec.c.

Referenced by decode_frame(), and flush().

unsigned int ALSDecContext::js_switch

if true, joint-stereo decoding is enforced

Definition at line 204 of file alsdec.c.

Referenced by read_frame_data(), and read_var_block_data().

unsigned int ALSDecContext::cs_switch

if true, channel rearrangement is done

Definition at line 205 of file alsdec.c.

Referenced by read_specific_config().

unsigned int ALSDecContext::num_blocks

number of blocks used in the current frame

Definition at line 206 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), get_block_sizes(), and read_frame_data().

unsigned int ALSDecContext::s_max

maximum Rice parameter allowed in entropy coding

Definition at line 207 of file alsdec.c.

Referenced by decode_init(), and read_var_block_data().

uint8_t* ALSDecContext::bgmc_lut

pointer at lookup tables used for BGMC

Definition at line 208 of file alsdec.c.

Referenced by decode_end(), decode_init(), and read_var_block_data().

int* ALSDecContext::bgmc_lut_status

pointer at lookup table status flags used for BGMC

Definition at line 209 of file alsdec.c.

Referenced by decode_end(), decode_init(), and read_var_block_data().

int ALSDecContext::ltp_lag_length

number of bits used for ltp lag value

Definition at line 210 of file alsdec.c.

Referenced by decode_init(), read_channel_data(), and read_var_block_data().

int* ALSDecContext::const_block

contains const_block flags for all channels

Definition at line 211 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

unsigned int* ALSDecContext::shift_lsbs

contains shift_lsbs flags for all channels

Definition at line 212 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

unsigned int* ALSDecContext::opt_order

contains opt_order flags for all channels

Definition at line 213 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int* ALSDecContext::store_prev_samples

contains store_prev_samples flags for all channels

Definition at line 214 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int* ALSDecContext::use_ltp

contains use_ltp flags for all channels

Definition at line 215 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int* ALSDecContext::ltp_lag

contains ltp lag values for all channels

Definition at line 216 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int** ALSDecContext::ltp_gain

gain values for ltp 5-tap filter for a channel

Definition at line 217 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int* ALSDecContext::ltp_gain_buffer

contains all gain values for ltp 5-tap filter

Definition at line 218 of file alsdec.c.

Referenced by decode_end(), and decode_init().

int32_t** ALSDecContext::quant_cof

quantized parcor coefficients for a channel

Definition at line 219 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int32_t* ALSDecContext::quant_cof_buffer

contains all quantized parcor coefficients

Definition at line 220 of file alsdec.c.

Referenced by decode_end(), and decode_init().

int32_t** ALSDecContext::lpc_cof

coefficients of the direct form prediction filter for a channel

Definition at line 221 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int32_t* ALSDecContext::lpc_cof_buffer

contains all coefficients of the direct form prediction filter

Definition at line 222 of file alsdec.c.

Referenced by decode_end(), and decode_init().

int32_t* ALSDecContext::lpc_cof_reversed_buffer

temporary buffer to set up a reversed versio of lpc_cof_buffer

Definition at line 223 of file alsdec.c.

Referenced by decode_end(), decode_init(), and decode_var_block_data().

ALSChannelData** ALSDecContext::chan_data

channel data for multi-channel correlation

Definition at line 224 of file alsdec.c.

Referenced by decode_end(), decode_init(), and read_frame_data().

ALSChannelData* ALSDecContext::chan_data_buffer

contains channel data for all channels

Definition at line 225 of file alsdec.c.

Referenced by decode_end(), decode_init(), and read_frame_data().

int* ALSDecContext::reverted_channels

stores a flag for each reverted channel

Definition at line 226 of file alsdec.c.

Referenced by decode_end(), decode_init(), and read_frame_data().

int32_t* ALSDecContext::prev_raw_samples

contains unshifted raw samples from the previous block

Definition at line 227 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), and read_frame_data().

int32_t** ALSDecContext::raw_samples

decoded raw samples for each channel

Definition at line 228 of file alsdec.c.

Referenced by decode_blocks(), decode_blocks_ind(), decode_end(), decode_init(), read_frame_data(), and revert_channel_correlation().

int32_t* ALSDecContext::raw_buffer

contains all decoded raw samples including carryover samples

Definition at line 229 of file alsdec.c.

Referenced by decode_end(), and decode_init().

uint8_t* ALSDecContext::crc_buffer

buffer of byte order corrected samples used for CRC check

Definition at line 230 of file alsdec.c.

Referenced by decode_end(), decode_frame(), and decode_init().

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

• libavcodec/alsdec.c