| /* |
| * H.261 codec |
| * 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 |
| * H.261 codec. |
| */ |
| |
| #ifndef AVCODEC_H261_H |
| #define AVCODEC_H261_H |
| |
| #include "mpegvideo.h" |
| #include "rl.h" |
| |
| /** |
| * H261Context |
| */ |
| typedef struct H261Context { |
| MpegEncContext s; |
| |
| int current_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 */ |