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 27extern const uint16_t ff_ac3_frame_size_tab[38][3]; 28extern const uint8_t ff_ac3_channels_tab[8]; 29extern const uint16_t ff_ac3_channel_layout_tab[8]; 30extern const uint8_t ff_ac3_enc_channel_map[8][2][6]; 31extern const uint8_t ff_ac3_dec_channel_map[8][2][6]; 32extern const uint16_t ff_ac3_sample_rate_tab[3]; 33extern const uint16_t ff_ac3_bitrate_tab[19]; 34extern const int16_t ff_ac3_window[256]; 35extern const uint8_t ff_ac3_log_add_tab[260]; 36extern const uint16_t ff_ac3_hearing_threshold_tab[50][3]; 37extern const uint8_t ff_ac3_bap_tab[64]; 38extern const uint8_t ff_ac3_slow_decay_tab[4]; 39extern const uint8_t ff_ac3_fast_decay_tab[4]; 40extern const uint16_t ff_ac3_slow_gain_tab[4]; 41extern const uint16_t ff_ac3_db_per_bit_tab[4]; 42extern const int16_t ff_ac3_floor_tab[8]; 43extern const uint16_t ff_ac3_fast_gain_tab[8]; 44extern const uint8_t ff_ac3_critical_band_size_tab[50]; 45extern const uint16_t ff_eac3_default_chmap[8]; 46 47/** Custom channel map locations bitmask 48 * Other channels described in documentation: 49 * Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair, 50 * Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2 51 */ 52enum CustomChannelMapLocation{ 53 AC3_CHMAP_L= 1<<(15-0), 54 AC3_CHMAP_C= 1<<(15-1), 55 AC3_CHMAP_R= 1<<(15-2), 56 AC3_CHMAP_L_SUR= 1<<(15-3), 57 AC3_CHMAP_R_SUR = 1<<(15-4), 58 AC3_CHMAP_C_SUR= 1<<(15-7), 59 AC3_CHMAP_LFE = 1<<(15-15) 60}; 61 62#endif /* AVCODEC_AC3TAB_H */ 63