mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
73 lines
2.2 KiB
73 lines
2.2 KiB
/* |
|
* 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 |
|
* h261codec. |
|
*/ |
|
|
|
#ifndef AVCODEC_H261_H |
|
#define AVCODEC_H261_H |
|
|
|
#include "mpegvideo.h" |
|
#include "rl.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 |
|
|
|
extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3]; |
|
|
|
extern const uint8_t ff_h261_mba_code[35]; |
|
extern const uint8_t ff_h261_mba_bits[35]; |
|
extern const uint8_t ff_h261_mtype_code[10]; |
|
extern const uint8_t ff_h261_mtype_bits[10]; |
|
extern const int ff_h261_mtype_map[10]; |
|
extern const uint8_t ff_h261_mv_tab[17][2]; |
|
extern const uint8_t ff_h261_cbp_tab[63][2]; |
|
extern RLTable ff_h261_rl_tcoeff; |
|
|
|
void ff_h261_loop_filter(MpegEncContext *s); |
|
void ff_h261_common_init(void); |
|
|
|
int ff_h261_get_picture_format(int width, int height); |
|
void ff_h261_reorder_mb_index(MpegEncContext *s); |
|
void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64], |
|
int motion_x, int motion_y); |
|
void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number); |
|
void ff_h261_encode_init(MpegEncContext *s); |
|
|
|
#endif /* AVCODEC_H261_H */
|
|
|