3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 #ifndef AVCODEC_AC3TAB_H
23 #define AVCODEC_AC3TAB_H
27 #include "libavutil/internal.h"
31 extern const uint16_t ff_ac3_frame_size_tab[38][3];
32 extern const uint8_t ff_ac3_channels_tab[8];
33 extern av_export_avcodec const uint16_t avpriv_ac3_channel_layout_tab[8];
34 extern const uint8_t ff_ac3_dec_channel_map[8][2][6];
35 extern const int ff_ac3_sample_rate_tab[];
36 extern const uint16_t ff_ac3_bitrate_tab[19];
37 extern const uint8_t ff_ac3_rematrix_band_tab[5];
38 extern const uint8_t ff_eac3_default_cpl_band_struct[18];
39 extern const uint8_t ff_ac3_log_add_tab[260];
40 extern const uint16_t ff_ac3_hearing_threshold_tab[AC3_CRITICAL_BANDS][3];
41 extern const uint8_t ff_ac3_bap_tab[64];
42 extern const uint8_t ff_ac3_slow_decay_tab[4];
43 extern const uint8_t ff_ac3_fast_decay_tab[4];
44 extern const uint16_t ff_ac3_slow_gain_tab[4];
45 extern const uint16_t ff_ac3_db_per_bit_tab[4];
46 extern const int16_t ff_ac3_floor_tab[8];
47 extern const uint16_t ff_ac3_fast_gain_tab[8];
48 extern const uint8_t ff_ac3_band_start_tab[AC3_CRITICAL_BANDS+1];
49 extern const uint8_t ff_ac3_bin_to_band_tab[253];
50 extern const uint64_t ff_eac3_custom_channel_map_locations[16][2];
53 /** Custom channel map locations bitmask
54 * Other channels described in documentation:
55 * Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair,
56 * Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2
58 enum CustomChannelMapLocation{
59 AC3_CHMAP_L= 1<<(15-0),
60 AC3_CHMAP_C= 1<<(15-1),
61 AC3_CHMAP_R= 1<<(15-2),
62 AC3_CHMAP_L_SUR= 1<<(15-3),
63 AC3_CHMAP_R_SUR = 1<<(15-4),
64 AC3_CHMAP_C_SUR= 1<<(15-7),
65 AC3_CHMAP_LFE = 1<<(15-15)
68 #define COMMON_CHANNEL_MAP \
69 { { 0, 1, }, { 0, 1, 2, } },\
70 { { 0, }, { 0, 1, } },\
71 { { 0, 1, }, { 0, 1, 2, } },\
72 { { 0, 2, 1, }, { 0, 2, 1, 3, } },\
73 { { 0, 1, 2, }, { 0, 1, 3, 2, } },\
74 { { 0, 2, 1, 3, }, { 0, 2, 1, 4, 3, } },
76 #endif /* AVCODEC_AC3TAB_H */