AC3HeaderInfo Struct Reference

Coded AC-3 header values up to the lfeon element, plus derived values. More...

#include <ac3_parser_internal.h>

Data Fields

Coded elements

uint16_t sync_word

uint16_t crc1

uint8_t sr_code

uint8_t bitstream_id

uint8_t bitstream_mode

uint8_t channel_mode

uint8_t lfe_on

uint8_t frame_type

int substreamid

substream identification

int center_mix_level

Center mix level index.

int surround_mix_level

Surround mix level index.

uint8_t channel_map_present

uint16_t channel_map

int num_blocks

number of audio blocks

int dolby_surround_mode

Derived values

uint8_t sr_shift

uint16_t sample_rate

uint32_t bit_rate

uint8_t channels

uint16_t frame_size

uint64_t channel_layout

int8_t ac3_bit_rate_code

enhanced eac3 extension coded elements

int8_t dialog_normalization [2]

uint8_t compression_exists [2]

uint8_t heavy_dynamic_range [2]

uint8_t center_mix_level_ltrt

Center mix level index.

uint8_t surround_mix_level_ltrt

Surround mix level index.

uint8_t dolby_headphone_mode

uint8_t dolby_surround_ex_mode

uint8_t lfe_mix_level_exists

uint8_t lfe_mix_level

uint8_t preferred_downmix

uint8_t eac3_extension_type_a

uint8_t complexity_index_type_a

Detailed Description

Coded AC-3 header values up to the lfeon element, plus derived values.

Definition at line 34 of file ac3_parser_internal.h.

Field Documentation

◆ sync_word

uint16_t AC3HeaderInfo::sync_word

Definition at line 38 of file ac3_parser_internal.h.

◆ crc1

uint16_t AC3HeaderInfo::crc1

Definition at line 39 of file ac3_parser_internal.h.

◆ sr_code

uint8_t AC3HeaderInfo::sr_code

Definition at line 40 of file ac3_parser_internal.h.

Referenced by handle_eac3(), and parse_frame_header().

◆ bitstream_id

uint8_t AC3HeaderInfo::bitstream_id

Definition at line 41 of file ac3_parser_internal.h.

Referenced by ff_aac_ac3_parse(), handle_eac3(), mpegts_write_packet_internal(), and parse_frame_header().

◆ bitstream_mode

uint8_t AC3HeaderInfo::bitstream_mode

Definition at line 42 of file ac3_parser_internal.h.

Referenced by ff_aac_ac3_parse(), ff_eac3_parse_header(), handle_eac3(), mpegts_write_packet_internal(), and parse_frame_header().

◆ channel_mode

uint8_t AC3HeaderInfo::channel_mode

Definition at line 43 of file ac3_parser_internal.h.

Referenced by handle_eac3(), mpegts_write_packet_internal(), and parse_frame_header().

◆ lfe_on

uint8_t AC3HeaderInfo::lfe_on

Definition at line 44 of file ac3_parser_internal.h.

Referenced by handle_eac3(), and parse_frame_header().

◆ frame_type

uint8_t AC3HeaderInfo::frame_type

Definition at line 45 of file ac3_parser_internal.h.

Referenced by ac3_decode_frame(), eac3_core_filter(), handle_eac3(), and parse_frame_header().

◆ substreamid

int AC3HeaderInfo::substreamid

substream identification

Definition at line 46 of file ac3_parser_internal.h.

Referenced by handle_eac3(), and parse_frame_header().

◆ center_mix_level

int AC3HeaderInfo::center_mix_level

Center mix level index.

Definition at line 47 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and parse_frame_header().

◆ surround_mix_level

int AC3HeaderInfo::surround_mix_level

Surround mix level index.

Definition at line 48 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and parse_frame_header().

◆ channel_map_present

uint8_t AC3HeaderInfo::channel_map_present

Definition at line 49 of file ac3_parser_internal.h.

Referenced by handle_eac3().

◆ channel_map

uint16_t AC3HeaderInfo::channel_map

Definition at line 50 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and handle_eac3().

◆ num_blocks

int AC3HeaderInfo::num_blocks

number of audio blocks

Definition at line 51 of file ac3_parser_internal.h.

Referenced by ac3_decode_frame(), ff_aac_ac3_parse(), ffat_create_decoder(), handle_eac3(), and parse_frame_header().

◆ dolby_surround_mode

int AC3HeaderInfo::dolby_surround_mode

Definition at line 52 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), mpegts_write_packet_internal(), and parse_frame_header().

◆ sr_shift

uint8_t AC3HeaderInfo::sr_shift

Definition at line 58 of file ac3_parser_internal.h.

Referenced by parse_frame_header().

◆ sample_rate

uint16_t AC3HeaderInfo::sample_rate

Definition at line 59 of file ac3_parser_internal.h.

Referenced by ac3_decode_frame(), ff_aac_ac3_parse(), ff_hls_senc_parse_audio_setup_info(), ffat_create_decoder(), and parse_frame_header().

◆ bit_rate

uint32_t AC3HeaderInfo::bit_rate

Definition at line 60 of file ac3_parser_internal.h.

Referenced by ff_aac_ac3_parse(), ff_hls_senc_parse_audio_setup_info(), ffat_create_decoder(), handle_eac3(), and parse_frame_header().

◆ channels

uint8_t AC3HeaderInfo::channels

Definition at line 61 of file ac3_parser_internal.h.

Referenced by ff_aac_ac3_parse(), ffat_create_decoder(), and parse_frame_header().

◆ frame_size

uint16_t AC3HeaderInfo::frame_size

Definition at line 62 of file ac3_parser_internal.h.

Referenced by eac3_core_filter(), ff_aac_ac3_parse(), get_next_ac3_eac3_sync_frame(), handle_eac3(), and parse_frame_header().

◆ channel_layout

uint64_t AC3HeaderInfo::channel_layout

Definition at line 63 of file ac3_parser_internal.h.

Referenced by ff_aac_ac3_parse(), and ff_hls_senc_parse_audio_setup_info().

◆ ac3_bit_rate_code

int8_t AC3HeaderInfo::ac3_bit_rate_code

Definition at line 64 of file ac3_parser_internal.h.

Referenced by handle_eac3().

◆ dialog_normalization

int8_t AC3HeaderInfo::dialog_normalization[2]

Definition at line 70 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and parse_frame_header().

◆ compression_exists

uint8_t AC3HeaderInfo::compression_exists[2]

Definition at line 71 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and parse_frame_header().

◆ heavy_dynamic_range

uint8_t AC3HeaderInfo::heavy_dynamic_range[2]

Definition at line 72 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header(), and parse_frame_header().

◆ center_mix_level_ltrt

uint8_t AC3HeaderInfo::center_mix_level_ltrt

Center mix level index.

Definition at line 73 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ surround_mix_level_ltrt

uint8_t AC3HeaderInfo::surround_mix_level_ltrt

Surround mix level index.

Definition at line 74 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ dolby_headphone_mode

uint8_t AC3HeaderInfo::dolby_headphone_mode

Definition at line 75 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ dolby_surround_ex_mode

uint8_t AC3HeaderInfo::dolby_surround_ex_mode

Definition at line 76 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ lfe_mix_level_exists

uint8_t AC3HeaderInfo::lfe_mix_level_exists

Definition at line 77 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ lfe_mix_level

uint8_t AC3HeaderInfo::lfe_mix_level

Definition at line 78 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ preferred_downmix

uint8_t AC3HeaderInfo::preferred_downmix

Definition at line 79 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ eac3_extension_type_a

uint8_t AC3HeaderInfo::eac3_extension_type_a

Definition at line 80 of file ac3_parser_internal.h.

Referenced by ff_eac3_parse_header().

◆ complexity_index_type_a

uint8_t AC3HeaderInfo::complexity_index_type_a

Definition at line 81 of file ac3_parser_internal.h.

Referenced by handle_eac3().

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

libavcodec/ac3_parser_internal.h

Generated on Sun Sep 6 2026 19:21:23 for FFmpeg by doxygen 1.13.2