aboutsummaryrefslogtreecommitdiffstats
path: root/libavcodec/h261.h
blob: 1d4fc848a07ecf09fcbeecbc07c52354a73bc17b (plain) (blame)
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
/*
 * H261 decoder
 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
 * Copyright (c) 2004 Maarten Daniels
 *
 * 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 h261.c
 * h261codec.
 */

#include "mpegvideo.h"

/**
 * H261Context
 */
typedef struct H261Context{
    MpegEncContext s;

    int current_mba;
    int previous_mba;
    int mba_diff;
    int mtype;
    int current_mv_x;
    int current_mv_y;
    int gob_number;
    int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read
}H261Context;

#define MB_TYPE_H261_FIL 0x800000