FFmpeg
mpegaudiodata.h
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1 /*
2  * MPEG Audio common tables
3  * copyright (c) 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 /**
23  * @file
24  * mpeg audio layer common tables.
25  */
26 
27 #ifndef AVCODEC_MPEGAUDIODATA_H
28 #define AVCODEC_MPEGAUDIODATA_H
29 
30 #include <stdint.h>
31 
32 #include "config.h"
33 
34 #include "internal.h"
35 #include "vlc.h"
36 
37 #define MODE_EXT_MS_STEREO 2
38 #define MODE_EXT_I_STEREO 1
39 
40 extern av_export_avcodec const uint16_t avpriv_mpa_bitrate_tab[2][3][15];
41 extern av_export_avcodec const uint16_t avpriv_mpa_freq_tab[3];
42 extern const int ff_mpa_sblimit_table[5];
43 extern const int ff_mpa_quant_steps[17];
44 extern const int ff_mpa_quant_bits[17];
45 extern const unsigned char * const ff_mpa_alloc_tables[5];
46 
47 #define TABLE_4_3_SIZE ((8191 + 16)*4)
48 #if CONFIG_HARDCODED_TABLES
49 extern const int8_t ff_table_4_3_exp [TABLE_4_3_SIZE];
50 extern const uint32_t ff_table_4_3_value[TABLE_4_3_SIZE];
51 #else
52 extern int8_t ff_table_4_3_exp [TABLE_4_3_SIZE];
53 extern uint32_t ff_table_4_3_value[TABLE_4_3_SIZE];
54 #endif
55 
56 /* VLCs for decoding layer 3 huffman tables */
57 extern VLC ff_huff_vlc[16];
58 extern VLC ff_huff_quad_vlc[2];
59 
60 /* layer3 scale factor size */
61 extern const uint8_t ff_slen_table[2][16];
62 /* number of lsf scale factors for a given size */
63 extern const uint8_t ff_lsf_nsf_table[6][3][4];
64 extern const uint8_t ff_mpa_huff_data[32][2];
65 
66 /* band size tables */
67 extern const uint8_t ff_band_size_long[9][22];
68 extern const uint8_t ff_band_size_short[9][13];
69 /* computed from ff_band_size_long */
70 extern uint16_t ff_band_index_long[9][23];
71 
72 extern int16_t *const ff_division_tabs[4];
73 
74 /* lower 2 bits: modulo 3, higher bits: shift */
75 extern uint16_t ff_scale_factor_modshift[64];
76 
77 extern const uint8_t ff_mpa_pretab[2][22];
78 
79 /* Initialize tables shared between the fixed and
80  * floating point MPEG audio decoders. */
82 
83 #endif /* AVCODEC_MPEGAUDIODATA_H */
const uint8_t ff_band_size_short[9][13]
const int ff_mpa_quant_bits[17]
Definition: mpegaudiodata.c:55
void ff_mpegaudiodec_common_init_static(void)
uint8_t
int8_t ff_table_4_3_exp[TABLE_4_3_SIZE]
#define TABLE_4_3_SIZE
Definition: mpegaudiodata.h:47
const int ff_mpa_quant_steps[17]
Definition: mpegaudiodata.c:47
VLC ff_huff_quad_vlc[2]
const uint8_t ff_slen_table[2][16]
#define av_export_avcodec
Definition: internal.h:395
const uint8_t ff_mpa_huff_data[32][2]
av_export_avcodec const uint16_t avpriv_mpa_freq_tab[3]
Definition: mpegaudiodata.c:40
Definition: vlc.h:26
int16_t *const ff_division_tabs[4]
uint16_t ff_band_index_long[9][23]
const unsigned char *const ff_mpa_alloc_tables[5]
uint16_t ff_scale_factor_modshift[64]
common internal api header.
av_export_avcodec const uint16_t avpriv_mpa_bitrate_tab[2][3][15]
Definition: mpegaudiodata.c:30
uint32_t ff_table_4_3_value[TABLE_4_3_SIZE]
VLC ff_huff_vlc[16]
const uint8_t ff_mpa_pretab[2][22]
const uint8_t ff_band_size_long[9][22]
const uint8_t ff_lsf_nsf_table[6][3][4]
const int ff_mpa_sblimit_table[5]
Definition: mpegaudiodata.c:45