ALSDecContext Struct Reference


Data Fields

AVCodecContextavctx
AVFrame frame
ALSSpecificConfig sconf
GetBitContext gb
DSPContext dsp
const AVCRCcrc_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 num_blocks
 number of blocks used in the current frame
unsigned int s_max
 maximum Rice parameter allowed in entropy coding
uint8_tbgmc_lut
 pointer at lookup tables used for BGMC
intbgmc_lut_status
 pointer at lookup table status flags used for BGMC
int ltp_lag_length
 number of bits used for ltp lag value
intconst_block
 contains const_block flags for all channels
unsigned intshift_lsbs
 contains shift_lsbs flags for all channels
unsigned intopt_order
 contains opt_order flags for all channels
intstore_prev_samples
 contains store_prev_samples flags for all channels
intuse_ltp
 contains use_ltp flags for all channels
intltp_lag
 contains ltp lag values for all channels
int ** ltp_gain
 gain values for ltp 5-tap filter for a channel
intltp_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
ALSChannelDatachan_data_buffer
 contains channel data for all channels
intreverted_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_tcrc_buffer
 buffer of byte order corrected samples used for CRC check

Detailed Description

Definition at line 192 of file alsdec.c.


Field Documentation

pointer at lookup tables used for BGMC

Definition at line 206 of file alsdec.c.

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

pointer at lookup table status flags used for BGMC

Definition at line 207 of file alsdec.c.

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

channel data for multi-channel correlation

Definition at line 222 of file alsdec.c.

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

contains channel data for all channels

Definition at line 223 of file alsdec.c.

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

contains const_block flags for all channels

Definition at line 209 of file alsdec.c.

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

CRC value calculated from decoded data.

Definition at line 200 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

buffer of byte order corrected samples used for CRC check

Definition at line 228 of file alsdec.c.

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

CRC value of the original input data.

Definition at line 199 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

Definition at line 198 of file alsdec.c.

Referenced by decode_frame(), and read_specific_config().

length of the current frame to decode

Definition at line 201 of file alsdec.c.

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

Definition at line 197 of file alsdec.c.

Referenced by decode_frame(), and decode_init().

Definition at line 194 of file alsdec.c.

Referenced by decode_frame(), and decode_init().

the frame ID / number of the current frame

Definition at line 202 of file alsdec.c.

Referenced by decode_frame(), and flush().

if true, joint-stereo decoding is enforced

Definition at line 203 of file alsdec.c.

Referenced by read_frame_data(), and read_var_block_data().

coefficients of the direct form prediction filter 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().

contains all coefficients of the direct form prediction filter

Definition at line 220 of file alsdec.c.

Referenced by decode_end(), and decode_init().

temporary buffer to set up a reversed versio of lpc_cof_buffer

Definition at line 221 of file alsdec.c.

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

gain values for ltp 5-tap filter for a channel

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().

contains all gain values for ltp 5-tap filter

Definition at line 216 of file alsdec.c.

Referenced by decode_end(), and decode_init().

contains ltp lag values 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().

number of bits used for ltp lag value

Definition at line 208 of file alsdec.c.

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

number of blocks used in the current frame

Definition at line 204 of file alsdec.c.

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

contains opt_order 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().

contains unshifted raw samples from the previous block

Definition at line 225 of file alsdec.c.

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

quantized parcor coefficients 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().

contains all quantized parcor coefficients

Definition at line 218 of file alsdec.c.

Referenced by decode_end(), and decode_init().

contains all decoded raw samples including carryover samples

Definition at line 227 of file alsdec.c.

Referenced by decode_end(), and decode_init().

decoded raw samples for each channel

Definition at line 226 of file alsdec.c.

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

stores a flag for each reverted channel

Definition at line 224 of file alsdec.c.

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

maximum Rice parameter allowed in entropy coding

Definition at line 205 of file alsdec.c.

Referenced by decode_init(), and read_var_block_data().

contains shift_lsbs flags for all channels

Definition at line 210 of file alsdec.c.

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

contains store_prev_samples 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().

contains use_ltp 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().


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

Generated on Fri Oct 26 02:50:14 2012 for FFmpeg by  doxygen 1.5.8