Imported Debian version 2.5.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / h261.h
1 /*
2 * H261 decoder
3 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4 * Copyright (c) 2004 Maarten Daniels
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * h261codec.
26 */
27
28 #ifndef AVCODEC_H261_H
29 #define AVCODEC_H261_H
30
31 #include "mpegvideo.h"
32 #include "rl.h"
33
34 /**
35 * H261Context
36 */
37 typedef struct H261Context {
38 MpegEncContext s;
39
40 int current_mba;
41 int mba_diff;
42 int mtype;
43 int current_mv_x;
44 int current_mv_y;
45 int gob_number;
46 int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read
47 } H261Context;
48
49 #define MB_TYPE_H261_FIL 0x800000
50
51 extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3];
52
53 extern const uint8_t ff_h261_mba_code[35];
54 extern const uint8_t ff_h261_mba_bits[35];
55 extern const uint8_t ff_h261_mtype_code[10];
56 extern const uint8_t ff_h261_mtype_bits[10];
57 extern const int ff_h261_mtype_map[10];
58 extern const uint8_t ff_h261_mv_tab[17][2];
59 extern const uint8_t ff_h261_cbp_tab[63][2];
60 extern RLTable ff_h261_rl_tcoeff;
61
62 void ff_h261_loop_filter(MpegEncContext *s);
63 void ff_h261_common_init(void);
64
65 int ff_h261_get_picture_format(int width, int height);
66 void ff_h261_reorder_mb_index(MpegEncContext *s);
67 void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64],
68 int motion_x, int motion_y);
69 void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number);
70 void ff_h261_encode_init(MpegEncContext *s);
71
72 #endif /* AVCODEC_H261_H */