mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
7b11eead1b
The table in question is a 253 byte one. In fact, it turns out that dynamic generation of the table results in an increased binary size. Code compiled with GCC 5.2.0, x86-64 (size in bytes), before and after patch: old: 62321064 libavcodec/libavcodec.so.57 new: 62320536 libavcodec/libavcodec.so.57 Thus, it always make sense to statically allocate this. Tested with FATE with/without --enable-hardcoded-tables. Reviewed-by: wm4 <nfxjfg@googlemail.com> Signed-off-by: Ganesh Ajjanagadde <gajjanagadde@gmail.com>
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*
|
|
* AC-3 tables
|
|
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_AC3TAB_H
|
|
#define AVCODEC_AC3TAB_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "libavutil/internal.h"
|
|
#include "ac3.h"
|
|
|
|
extern const uint16_t ff_ac3_frame_size_tab[38][3];
|
|
extern const uint8_t ff_ac3_channels_tab[8];
|
|
extern av_export const uint16_t avpriv_ac3_channel_layout_tab[8];
|
|
extern const uint8_t ff_ac3_enc_channel_map[8][2][6];
|
|
extern const uint8_t ff_ac3_dec_channel_map[8][2][6];
|
|
extern const uint16_t ff_ac3_sample_rate_tab[3];
|
|
extern const uint16_t ff_ac3_bitrate_tab[19];
|
|
extern const uint8_t ff_ac3_rematrix_band_tab[5];
|
|
extern const uint8_t ff_eac3_default_cpl_band_struct[18];
|
|
extern const int16_t ff_ac3_window[AC3_WINDOW_SIZE/2];
|
|
extern const uint8_t ff_ac3_log_add_tab[260];
|
|
extern const uint16_t ff_ac3_hearing_threshold_tab[AC3_CRITICAL_BANDS][3];
|
|
extern const uint8_t ff_ac3_bap_tab[64];
|
|
extern const uint8_t ff_ac3_slow_decay_tab[4];
|
|
extern const uint8_t ff_ac3_fast_decay_tab[4];
|
|
extern const uint16_t ff_ac3_slow_gain_tab[4];
|
|
extern const uint16_t ff_ac3_db_per_bit_tab[4];
|
|
extern const int16_t ff_ac3_floor_tab[8];
|
|
extern const uint16_t ff_ac3_fast_gain_tab[8];
|
|
extern const uint16_t ff_eac3_default_chmap[8];
|
|
extern const uint8_t ff_ac3_band_start_tab[AC3_CRITICAL_BANDS+1];
|
|
extern const uint8_t ff_ac3_bin_to_band_tab[253];
|
|
|
|
/** Custom channel map locations bitmask
|
|
* Other channels described in documentation:
|
|
* Lc/Rc pair, Lrs/Rrs pair, Ts, Lsd/Rsd pair,
|
|
* Lw/Rw pair, Lvh/Rvh pair, Cvh, Reserved, LFE2
|
|
*/
|
|
enum CustomChannelMapLocation{
|
|
AC3_CHMAP_L= 1<<(15-0),
|
|
AC3_CHMAP_C= 1<<(15-1),
|
|
AC3_CHMAP_R= 1<<(15-2),
|
|
AC3_CHMAP_L_SUR= 1<<(15-3),
|
|
AC3_CHMAP_R_SUR = 1<<(15-4),
|
|
AC3_CHMAP_C_SUR= 1<<(15-7),
|
|
AC3_CHMAP_LFE = 1<<(15-15)
|
|
};
|
|
|
|
#endif /* AVCODEC_AC3TAB_H */
|