1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* MPEG-1/2 VLC
* copyright (c) 2000,2001 Fabrice Bellard
* copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
*
* 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-1/2 VLC.
*/
#ifndef AVCODEC_MPEG12VLC_H
#define AVCODEC_MPEG12VLC_H
#include "vlc.h"
#define DC_VLC_BITS 9
#define MV_VLC_BITS 8
#define TEX_VLC_BITS 9
#define MBINCR_VLC_BITS 9
#define MB_PAT_VLC_BITS 9
#define MB_PTYPE_VLC_BITS 6
#define MB_BTYPE_VLC_BITS 6
extern VLC ff_dc_lum_vlc;
extern VLC ff_dc_chroma_vlc;
extern VLC ff_mbincr_vlc;
extern VLC ff_mb_ptype_vlc;
extern VLC ff_mb_btype_vlc;
extern VLC ff_mb_pat_vlc;
extern VLC ff_mv_vlc;
void ff_mpeg12_init_vlcs(void);
#define MPEG12_RL_NB_ELEMS 111
extern const int8_t ff_mpeg12_level[MPEG12_RL_NB_ELEMS];
extern const int8_t ff_mpeg12_run[MPEG12_RL_NB_ELEMS];
extern const uint16_t ff_mpeg1_vlc_table[MPEG12_RL_NB_ELEMS + 2][2];
extern const uint16_t ff_mpeg2_vlc_table[MPEG12_RL_NB_ELEMS + 2][2];
extern RL_VLC_ELEM ff_mpeg1_rl_vlc[];
extern RL_VLC_ELEM ff_mpeg2_rl_vlc[];
void ff_init_2d_vlc_rl(const uint16_t table_vlc[][2], RL_VLC_ELEM rl_vlc[],
const int8_t table_run[], const uint8_t table_level[],
int n, unsigned static_size, int flags);
void ff_mpeg1_init_uni_ac_vlc(const int8_t max_level[], const uint8_t index_run[],
const uint16_t table_vlc[][2], uint8_t uni_ac_vlc_len[]);
#endif /* AVCODEC_MPEG12VLC_H */
|
