1d4fc848a07ecf09fcbeecbc07c52354a73bc17b
[libav.git] / 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 h261.c
25 * h261codec.
26 */
27
28 #include "mpegvideo.h"
29
30 /**
31 * H261Context
32 */
33 typedef struct H261Context{
34 MpegEncContext s;
35
36 int current_mba;
37 int previous_mba;
38 int mba_diff;
39 int mtype;
40 int current_mv_x;
41 int current_mv_y;
42 int gob_number;
43 int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read
44 }H261Context;
45
46 #define MB_TYPE_H261_FIL 0x800000