mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
33e6d57f01
These arrays have a size of 180 resp. six bytes. This does not make it worthwhile to export them due to the overhead this occurs; for x64 Elf/Linux/GNU: 2x2B version, 2x24B .dynsym, 24B .rela.dyn, 8B .got, 4B hash + twice the size of the name (here 20+23B). Therefore these symbols are unavprived and duplicated for shared builds. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
|
|
* MPEG Audio common tables
|
|
* copyright (c) 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* mpeg audio layer common tables.
|
|
*/
|
|
|
|
#ifndef AVCODEC_MPEGAUDIODATA_H
|
|
#define AVCODEC_MPEGAUDIODATA_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "config.h"
|
|
|
|
#include "vlc.h"
|
|
|
|
#define MODE_EXT_MS_STEREO 2
|
|
#define MODE_EXT_I_STEREO 1
|
|
|
|
extern const uint16_t ff_mpa_bitrate_tab[2][3][15];
|
|
extern const uint16_t ff_mpa_freq_tab[3];
|
|
extern const int ff_mpa_sblimit_table[5];
|
|
extern const int ff_mpa_quant_steps[17];
|
|
extern const int ff_mpa_quant_bits[17];
|
|
extern const unsigned char * const ff_mpa_alloc_tables[5];
|
|
|
|
#define TABLE_4_3_SIZE ((8191 + 16)*4)
|
|
#if CONFIG_HARDCODED_TABLES
|
|
extern const int8_t ff_table_4_3_exp [TABLE_4_3_SIZE];
|
|
extern const uint32_t ff_table_4_3_value[TABLE_4_3_SIZE];
|
|
#else
|
|
extern int8_t ff_table_4_3_exp [TABLE_4_3_SIZE];
|
|
extern uint32_t ff_table_4_3_value[TABLE_4_3_SIZE];
|
|
#endif
|
|
|
|
/* VLCs for decoding layer 3 huffman tables */
|
|
extern VLC ff_huff_vlc[16];
|
|
extern VLC ff_huff_quad_vlc[2];
|
|
|
|
/* layer3 scale factor size */
|
|
extern const uint8_t ff_slen_table[2][16];
|
|
/* number of lsf scale factors for a given size */
|
|
extern const uint8_t ff_lsf_nsf_table[6][3][4];
|
|
extern const uint8_t ff_mpa_huff_data[32][2];
|
|
|
|
/* band size tables */
|
|
extern const uint8_t ff_band_size_long[9][22];
|
|
extern const uint8_t ff_band_size_short[9][13];
|
|
/* computed from ff_band_size_long */
|
|
extern uint16_t ff_band_index_long[9][23];
|
|
|
|
extern int16_t *const ff_division_tabs[4];
|
|
|
|
/* lower 2 bits: modulo 3, higher bits: shift */
|
|
extern uint16_t ff_scale_factor_modshift[64];
|
|
|
|
extern const uint8_t ff_mpa_pretab[2][22];
|
|
|
|
/* Initialize tables shared between the fixed and
|
|
* floating point MPEG audio decoders. */
|
|
void ff_mpegaudiodec_common_init_static(void);
|
|
|
|
#endif /* AVCODEC_MPEGAUDIODATA_H */
|