FFmpeg
ac3tab.h
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1 /*
2  * AC-3 tables
3  * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 #ifndef AVCODEC_AC3TAB_H
23 #define AVCODEC_AC3TAB_H
24 
25 #include <stdint.h>
26 
27 #include "libavutil/internal.h"
28 #include "ac3.h"
29 #include "internal.h"
30 
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];
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];
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];
51 
52 
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
57  */
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)
66 };
67 
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, } },
75 
76 #endif /* AVCODEC_AC3TAB_H */
const uint16_t ff_ac3_slow_gain_tab[4]
Definition: ac3tab.c:232
const uint16_t ff_ac3_fast_gain_tab[8]
Definition: ac3tab.c:244
const uint8_t ff_ac3_rematrix_band_tab[5]
Table of bin locations for rematrixing bands reference: Section 7.5.2 Rematrixing : Frequency Band De...
Definition: ac3tab.c:123
const uint8_t ff_eac3_default_cpl_band_struct[18]
Table E2.16 Default Coupling Banding Structure.
Definition: ac3tab.c:128
const uint8_t ff_ac3_log_add_tab[260]
Definition: ac3tab.c:132
uint8_t
const uint16_t ff_ac3_bitrate_tab[19]
Definition: ac3tab.c:114
const uint8_t ff_ac3_band_start_tab[AC3_CRITICAL_BANDS+1]
Starting frequency coefficient bin for each critical band.
Definition: ac3.c:35
const uint8_t ff_ac3_bin_to_band_tab[253]
Map each frequency coefficient bin to the critical band that contains it.
Definition: ac3.c:46
#define av_export_avcodec
Definition: internal.h:399
const uint8_t ff_ac3_dec_channel_map[8][2][6]
Table to remap channels from AC-3 order to SMPTE order.
Definition: ac3tab.c:104
CustomChannelMapLocation
Custom channel map locations bitmask Other channels described in documentation: Lc/Rc pair...
Definition: ac3tab.h:58
common internal API header
const uint8_t ff_ac3_bap_tab[64]
Definition: ac3tab.c:214
const int16_t ff_ac3_floor_tab[8]
Definition: ac3tab.c:240
const uint64_t ff_eac3_custom_channel_map_locations[16][2]
Definition: ac3tab.c:248
#define AC3_CRITICAL_BANDS
Definition: ac3.h:39
const uint8_t ff_ac3_channels_tab[8]
Map audio coding mode (acmod) to number of full-bandwidth channels.
Definition: ac3tab.c:82
const uint16_t ff_ac3_frame_size_tab[38][3]
Possible frame sizes.
Definition: ac3tab.c:37
const int ff_ac3_sample_rate_tab[]
Definition: ac3tab.c:111
common internal api header.
const uint16_t ff_ac3_db_per_bit_tab[4]
Definition: ac3tab.c:236
av_export_avcodec const uint16_t avpriv_ac3_channel_layout_tab[8]
Map audio coding mode (acmod) to channel layout mask.
Definition: ac3tab.c:89
const uint8_t ff_ac3_fast_decay_tab[4]
Definition: ac3tab.c:228
const uint8_t ff_ac3_slow_decay_tab[4]
Definition: ac3tab.c:224
const uint16_t ff_ac3_hearing_threshold_tab[AC3_CRITICAL_BANDS][3]
Definition: ac3tab.c:161
Common code between the AC-3 encoder and decoder.