ac3tab.h File Reference

#include "libavutil/common.h"
#include "ac3.h"

Go to the source code of this file.

Macros
#define	HCONST

Enumerations
enum	CustomChannelMapLocation {   AC3_CHMAP_L = 1<<(15-0), AC3_CHMAP_C = 1<<(15-1), AC3_CHMAP_R = 1<<(15-2), AC3_CHMAP_L_SUR = 1<<(15-3),   AC3_CHMAP_R_SUR = 1<<(15-4), AC3_CHMAP_C_SUR = 1<<(15-7), AC3_CHMAP_LFE = 1<<(15-15) }
	Custom channel map locations bitmask Other channels described in documentation: Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair, Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2. More...

Variables
const uint16_t	ff_ac3_frame_size_tab [38][3]
	Possible frame sizes.
const uint8_t	ff_ac3_channels_tab [8]
	Map audio coding mode (acmod) to number of full-bandwidth channels.
av_export const uint16_t	avpriv_ac3_channel_layout_tab [8]
	Map audio coding mode (acmod) to channel layout mask.
const uint8_t	ff_ac3_enc_channel_map [8][2][6]
	Table to remap channels from SMPTE order to AC-3 order.
const uint8_t	ff_ac3_dec_channel_map [8][2][6]
	Table to remap channels from from AC-3 order to SMPTE order.
const uint16_t	ff_ac3_sample_rate_tab [3]
const uint16_t	ff_ac3_bitrate_tab [19]
const uint8_t	ff_ac3_rematrix_band_tab [5]
	Table of bin locations for rematrixing bands reference: Section 7.5.2 Rematrixing : Frequency Band Definitions.
const uint8_t	ff_eac3_default_cpl_band_struct [18]
	Table E2.16 Default Coupling Banding Structure.
const int16_t	ff_ac3_window [AC3_WINDOW_SIZE/2]
const uint8_t	ff_ac3_log_add_tab [260]
const uint16_t	ff_ac3_hearing_threshold_tab [AC3_CRITICAL_BANDS][3]
const uint8_t	ff_ac3_bap_tab [64]
const uint8_t	ff_ac3_slow_decay_tab [4]
const uint8_t	ff_ac3_fast_decay_tab [4]
const uint16_t	ff_ac3_slow_gain_tab [4]
const uint16_t	ff_ac3_db_per_bit_tab [4]
const int16_t	ff_ac3_floor_tab [8]
const uint16_t	ff_ac3_fast_gain_tab [8]
const uint16_t	ff_eac3_default_chmap [8]
	Default channel map for a dependent substream defined by acmod.
const uint8_t	ff_ac3_band_start_tab [AC3_CRITICAL_BANDS+1]
	Starting frequency coefficient bin for each critical band.
HCONST uint8_t	ff_ac3_bin_to_band_tab [253]

Macro Definition Documentation

#define HCONST

Definition at line 31 of file ac3tab.h.

Enumeration Type Documentation

enum CustomChannelMapLocation

Custom channel map locations bitmask Other channels described in documentation: Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair, Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2.

Enumerator:

AC3_CHMAP_L
AC3_CHMAP_C
AC3_CHMAP_R
AC3_CHMAP_L_SUR
AC3_CHMAP_R_SUR
AC3_CHMAP_C_SUR
AC3_CHMAP_LFE

Definition at line 62 of file ac3tab.h.

Variable Documentation

const uint16_t ff_ac3_frame_size_tab[38][3]

Possible frame sizes.

from ATSC A/52 Table 5.18 Frame Size Code Table.

Definition at line 35 of file ac3tab.c.

Referenced by avpriv_ac3_parse_header(), and validate_options().

const uint8_t ff_ac3_channels_tab[8]

Map audio coding mode (acmod) to number of full-bandwidth channels.

from ATSC A/52 Table 5.8 Audio Coding Mode

Definition at line 80 of file ac3tab.c.

Referenced by avpriv_ac3_parse_header().

av_export const uint16_t avpriv_ac3_channel_layout_tab[8]

Map audio coding mode (acmod) to channel layout mask.

Definition at line 87 of file ac3tab.c.

Referenced by ac3_decode_frame(), avpriv_ac3_parse_header(), mov_read_dac3(), and mov_read_dec3().

const uint8_t ff_ac3_enc_channel_map[8][2][6]

Table to remap channels from SMPTE order to AC-3 order.

[channel_mode][lfe][ch]

Definition at line 110 of file ac3tab.c.

Referenced by set_channel_info().

const uint8_t ff_ac3_dec_channel_map[8][2][6]

Table to remap channels from from AC-3 order to SMPTE order.

[channel_mode][lfe][ch]

Definition at line 120 of file ac3tab.c.

Referenced by ac3_decode_frame().

const uint16_t ff_ac3_sample_rate_tab[3]

Definition at line 127 of file ac3tab.c.

Referenced by avpriv_ac3_parse_header(), and validate_options().

const uint16_t ff_ac3_bitrate_tab[19]

Definition at line 130 of file ac3tab.c.

Referenced by avpriv_ac3_parse_header(), and validate_options().

const uint8_t ff_ac3_rematrix_band_tab[5]

Table of bin locations for rematrixing bands reference: Section 7.5.2 Rematrixing : Frequency Band Definitions.

Definition at line 139 of file ac3tab.c.

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

const uint8_t ff_eac3_default_cpl_band_struct[18]

Table E2.16 Default Coupling Banding Structure.

Definition at line 144 of file ac3tab.c.

Referenced by decode_audio_block(), output_audio_block(), and set_bandwidth().

const int16_t ff_ac3_window[AC3_WINDOW_SIZE/2]

Definition at line 151 of file ac3tab.c.

Referenced by mdct_init().

const uint8_t ff_ac3_log_add_tab[260]

Definition at line 186 of file ac3tab.c.

Referenced by ff_ac3_bit_alloc_calc_psd().

const uint16_t ff_ac3_hearing_threshold_tab[AC3_CRITICAL_BANDS][3]

Definition at line 215 of file ac3tab.c.

Referenced by ff_ac3_bit_alloc_calc_mask().

const uint8_t ff_ac3_bap_tab[64]

Definition at line 268 of file ac3tab.c.

Referenced by bit_alloc(), and decode_audio_block().

const uint8_t ff_ac3_slow_decay_tab[4]

Definition at line 278 of file ac3tab.c.

Referenced by bit_alloc_init(), decode_audio_block(), and ff_eac3_parse_header().

const uint8_t ff_ac3_fast_decay_tab[4]

Definition at line 282 of file ac3tab.c.

Referenced by bit_alloc_init(), decode_audio_block(), and ff_eac3_parse_header().

const uint16_t ff_ac3_slow_gain_tab[4]

Definition at line 286 of file ac3tab.c.

Referenced by bit_alloc_init(), decode_audio_block(), and ff_eac3_parse_header().

const uint16_t ff_ac3_db_per_bit_tab[4]

Definition at line 290 of file ac3tab.c.

Referenced by bit_alloc_init(), decode_audio_block(), and ff_eac3_parse_header().

const int16_t ff_ac3_floor_tab[8]

Definition at line 294 of file ac3tab.c.

Referenced by bit_alloc_init(), decode_audio_block(), and ff_eac3_parse_header().

const uint16_t ff_ac3_fast_gain_tab[8]

Definition at line 298 of file ac3tab.c.

Referenced by bit_alloc_masking(), and decode_audio_block().

const uint16_t ff_eac3_default_chmap[8]

Default channel map for a dependent substream defined by acmod.

Definition at line 305 of file ac3tab.c.

const uint8_t ff_ac3_band_start_tab[AC3_CRITICAL_BANDS+1]

Starting frequency coefficient bin for each critical band.

Definition at line 34 of file ac3.c.

Referenced by ac3_bit_alloc_calc_bap_c(), ff_ac3_bit_alloc_calc_psd(), and ff_ac3_common_init().

HCONST uint8_t ff_ac3_bin_to_band_tab[253]

Definition at line 73 of file ac3.c.

Referenced by ac3_bit_alloc_calc_bap_c(), ff_ac3_bit_alloc_calc_mask(), ff_ac3_bit_alloc_calc_psd(), and ff_ac3_common_init().