lavc/aacsbr: fix make checkheaders warning
[ffmpeg.git] / libavcodec / vlc.h
1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18
19 #ifndef AVCODEC_VLC_H
20 #define AVCODEC_VLC_H
21
22 #include <stdint.h>
23
24 #define VLC_TYPE int16_t
25
26 typedef struct VLC {
27     int bits;
28     VLC_TYPE (*table)[2]; ///< code, bits
29     int table_size, table_allocated;
30 } VLC;
31
32 typedef struct RL_VLC_ELEM {
33     int16_t level;
34     int8_t len;
35     uint8_t run;
36 } RL_VLC_ELEM;
37
38 #define init_vlc(vlc, nb_bits, nb_codes,                \
39                  bits, bits_wrap, bits_size,            \
40                  codes, codes_wrap, codes_size,         \
41                  flags)                                 \
42     ff_init_vlc_sparse(vlc, nb_bits, nb_codes,          \
43                        bits, bits_wrap, bits_size,      \
44                        codes, codes_wrap, codes_size,   \
45                        NULL, 0, 0, flags)
46
47 int ff_init_vlc_sparse(VLC *vlc, int nb_bits, int nb_codes,
48                        const void *bits, int bits_wrap, int bits_size,
49                        const void *codes, int codes_wrap, int codes_size,
50                        const void *symbols, int symbols_wrap, int symbols_size,
51                        int flags);
52 void ff_free_vlc(VLC *vlc);
53
54 #define INIT_VLC_LE             2
55 #define INIT_VLC_USE_NEW_STATIC 4
56
57 #define INIT_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \
58     do {                                                                   \
59         static VLC_TYPE table[static_size][2];                             \
60         (vlc)->table           = table;                                    \
61         (vlc)->table_allocated = static_size;                              \
62         ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j,        \
63             INIT_VLC_USE_NEW_STATIC);                                      \
64     } while (0)
65
66 #define INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, h, i, j, static_size) \
67     do {                                                                   \
68         static VLC_TYPE table[static_size][2];                             \
69         (vlc)->table           = table;                                    \
70         (vlc)->table_allocated = static_size;                              \
71         ff_init_vlc_sparse(vlc, bits, a, b, c, d, e, f, g, h, i, j,        \
72             INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE);                        \
73     } while (0)
74
75 #define INIT_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size)       \
76     INIT_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size)
77
78 #define INIT_LE_VLC_STATIC(vlc, bits, a, b, c, d, e, f, g, static_size) \
79     INIT_LE_VLC_SPARSE_STATIC(vlc, bits, a, b, c, d, e, f, g, NULL, 0, 0, static_size)
80
81 #endif /* AVCODEC_VLC_H */