3 * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
4 * Copyright (c) 2004 Maarten Daniels
6 * This file is part of Libav.
8 * Libav 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.
13 * Libav 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.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
28 #ifndef AVCODEC_H261_H
29 #define AVCODEC_H261_H
31 #include "mpegvideo.h"
37 typedef struct H261Context {
47 int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read
50 #define MB_TYPE_H261_FIL 0x800000
52 extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3];
54 extern const uint8_t ff_h261_mba_code[35];
55 extern const uint8_t ff_h261_mba_bits[35];
56 extern const uint8_t ff_h261_mtype_code[10];
57 extern const uint8_t ff_h261_mtype_bits[10];
58 extern const int ff_h261_mtype_map[10];
59 extern const uint8_t ff_h261_mv_tab[17][2];
60 extern const uint8_t ff_h261_cbp_tab[63][2];
61 extern RLTable ff_h261_rl_tcoeff;
63 void ff_h261_loop_filter(MpegEncContext *s);
64 void ff_h261_common_init(void);
66 int ff_h261_get_picture_format(int width, int height);
67 void ff_h261_reorder_mb_index(MpegEncContext *s);
68 void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64],
69 int motion_x, int motion_y);
70 void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number);
71 void ff_h261_encode_init(MpegEncContext *s);
73 #endif /* AVCODEC_H261_H */