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72 lines
2.1 KiB
72 lines
2.1 KiB
/* |
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* H261 decoder |
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* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at> |
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* Copyright (c) 2004 Maarten Daniels |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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/** |
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* @file |
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* h261codec. |
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*/ |
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#ifndef AVCODEC_H261_H |
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#define AVCODEC_H261_H |
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#include "mpegvideo.h" |
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#include "rl.h" |
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/** |
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* H261Context |
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*/ |
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typedef struct H261Context { |
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MpegEncContext s; |
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int current_mba; |
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int previous_mba; |
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int mba_diff; |
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int mtype; |
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int current_mv_x; |
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int current_mv_y; |
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int gob_number; |
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int gob_start_code_skipped; // 1 if gob start code is already read before gob header is read |
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} H261Context; |
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#define MB_TYPE_H261_FIL 0x800000 |
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extern uint8_t ff_h261_rl_table_store[2][2 * MAX_RUN + MAX_LEVEL + 3]; |
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extern const uint8_t ff_h261_mba_code[35]; |
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extern const uint8_t ff_h261_mba_bits[35]; |
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extern const uint8_t ff_h261_mtype_code[10]; |
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extern const uint8_t ff_h261_mtype_bits[10]; |
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extern const int ff_h261_mtype_map[10]; |
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extern const uint8_t ff_h261_mv_tab[17][2]; |
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extern const uint8_t ff_h261_cbp_tab[63][2]; |
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extern RLTable ff_h261_rl_tcoeff; |
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void ff_h261_loop_filter(MpegEncContext *s); |
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int ff_h261_get_picture_format(int width, int height); |
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void ff_h261_reorder_mb_index(MpegEncContext *s); |
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void ff_h261_encode_mb(MpegEncContext *s, int16_t block[6][64], |
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int motion_x, int motion_y); |
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void ff_h261_encode_picture_header(MpegEncContext *s, int picture_number); |
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void ff_h261_encode_init(MpegEncContext *s); |
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#endif /* AVCODEC_H261_H */
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