libavcodec/ac3dec_data.h File Reference

#include "libavutil/common.h"

Go to the source code of this file.

Variables

const uint8_t ff_ac3_ungroup_3_in_5_bits_tab [32][3]

table used to ungroup 3 values stored in 5 bits.

const uint8_t ff_eac3_hebap_tab [64]

const uint8_t ff_eac3_bits_vs_hebap [20]

const int16_t ff_eac3_gaq_remap_1 [12]

Table E3.6, Gk=1 No gain (Gk=1) inverse quantization, remapping scale factors ff_eac3_gaq_remap[hebap+8].

const int16_t ff_eac3_gaq_remap_2_4_a [9][2]

Table E3.6, Gk=2 & Gk=4, A Large mantissa inverse quantization, remapping scale factors ff_eac3_gaq_remap_2_4_a[hebap-8][Gk=2,4].

const int8_t ff_eac3_gaq_remap_2_4_b [9][2]

Table E3.6, Gk=2 & Gk=4, B Large mantissa inverse quantization, negative mantissa remapping offsets Table values from the spec are right-shifted by 8 to simplify calculations.

const int16_t(*const [8] ff_eac3_mantissa_vq )[6]

const uint8_t ff_eac3_frm_expstr [32][6]

Table E2.14 Frame Exponent Strategy Combinations.

const uint8_t ff_eac3_default_cpl_band_struct [18]

Table E2.16 Default Coupling Banding Structure.

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.

Variable Documentation

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 1134 of file ac3dec_data.c.

Referenced by do_rematrixing().

const uint8_t ff_ac3_ungroup_3_in_5_bits_tab[32][3]

table used to ungroup 3 values stored in 5 bits.

used by bap=1 mantissas and GAQ. ff_ac3_ungroup_3_in_5_bits_tab[i] = { i/9, (i9)/3, (i9)3 }

Definition at line 35 of file ac3dec_data.c.

Referenced by ac3_tables_init(), and ff_eac3_decode_transform_coeffs_aht_ch().

const uint8_t ff_eac3_bits_vs_hebap[20]

Definition at line 56 of file ac3dec_data.c.

Referenced by ff_eac3_decode_transform_coeffs_aht_ch().

const uint8_t ff_eac3_default_cpl_band_struct[18]

Table E2.16 Default Coupling Banding Structure.

Definition at line 1127 of file ac3dec_data.c.

Referenced by decode_audio_block().

const uint8_t ff_eac3_frm_expstr[32][6]

Table E2.14 Frame Exponent Strategy Combinations.

Definition at line 1089 of file ac3dec_data.c.

Referenced by ff_eac3_parse_header().

const int16_t ff_eac3_gaq_remap_1[12]

Table E3.6, Gk=1 No gain (Gk=1) inverse quantization, remapping scale factors ff_eac3_gaq_remap[hebap+8].

Definition at line 66 of file ac3dec_data.c.

Referenced by ff_eac3_decode_transform_coeffs_aht_ch().

const int16_t ff_eac3_gaq_remap_2_4_a[9][2]

Table E3.6, Gk=2 & Gk=4, A Large mantissa inverse quantization, remapping scale factors ff_eac3_gaq_remap_2_4_a[hebap-8][Gk=2,4].

Definition at line 75 of file ac3dec_data.c.

Referenced by ff_eac3_decode_transform_coeffs_aht_ch().

const int8_t ff_eac3_gaq_remap_2_4_b[9][2]

Table E3.6, Gk=2 & Gk=4, B Large mantissa inverse quantization, negative mantissa remapping offsets Table values from the spec are right-shifted by 8 to simplify calculations.

ff_eac3_gaq_remap_3_4_b[hebap-8][Gk=2,4]

Definition at line 93 of file ac3dec_data.c.

Referenced by ff_eac3_decode_transform_coeffs_aht_ch().

const uint8_t ff_eac3_hebap_tab[64]

Definition at line 46 of file ac3dec_data.c.

Referenced by decode_audio_block().

const int16_t(* const[8] ff_eac3_mantissa_vq)[6]

Definition at line 1075 of file ac3dec_data.c.

Referenced by ff_eac3_decode_transform_coeffs_aht_ch().

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