libavcodec/ac3tab.h

   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 "libavutil/common.h"
  26
  27 extern const uint16_t ff_ac3_frame_size_tab[38][3];
  28 extern const uint8_t  ff_ac3_channels_tab[8];
  29 extern const uint8_t  ff_ac3_enc_channel_map[8][2][6];
  30 extern const uint8_t  ff_ac3_dec_channel_map[8][2][6];
  31 extern const uint16_t ff_ac3_sample_rate_tab[3];
  32 extern const uint16_t ff_ac3_bitrate_tab[19];
  33 extern const int16_t  ff_ac3_window[256];
  34 extern const uint8_t  ff_ac3_log_add_tab[260];
  35 extern const uint16_t ff_ac3_hearing_threshold_tab[50][3];
  36 extern const uint8_t  ff_ac3_bap_tab[64];
  37 extern const uint8_t  ff_ac3_slow_decay_tab[4];
  38 extern const uint8_t  ff_ac3_fast_decay_tab[4];
  39 extern const uint16_t ff_ac3_slow_gain_tab[4];
  40 extern const uint16_t ff_ac3_db_per_bit_tab[4];
  41 extern const int16_t  ff_ac3_floor_tab[8];
  42 extern const uint16_t ff_ac3_fast_gain_tab[8];
  43 extern const uint8_t  ff_ac3_critical_band_size_tab[50];
  44 extern const uint16_t ff_eac3_default_chmap[8];
  45
  46 /** Custom channel map locations bitmask
  47  *  Other channels described in documentation:
  48  *      Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair,
  49  *      Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2
  50  */
  51 enum CustomChannelMapLocation{
  52     AC3_CHMAP_L=        1<<(15-0),
  53     AC3_CHMAP_C=        1<<(15-1),
  54     AC3_CHMAP_R=        1<<(15-2),
  55     AC3_CHMAP_L_SUR=    1<<(15-3),
  56     AC3_CHMAP_R_SUR =   1<<(15-4),
  57     AC3_CHMAP_C_SUR=    1<<(15-7),
  58     AC3_CHMAP_LFE =     1<<(15-15)
  59 };
  60
  61 #endif /* AVCODEC_AC3TAB_H */