cabac.h
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
27 #ifndef AVCODEC_CABAC_H
28 #define AVCODEC_CABAC_H
29 
30 #include <stdint.h>
31 
32 #include "put_bits.h"
33 
34 #define CABAC_BITS 16
35 #define CABAC_MASK ((1<<CABAC_BITS)-1)
36 
37 typedef struct CABACContext{
38  int low;
39  int range;
41  const uint8_t *bytestream_start;
42  const uint8_t *bytestream;
43  const uint8_t *bytestream_end;
46 
47 void ff_init_cabac_encoder(CABACContext *c, uint8_t *buf, int buf_size);
48 void ff_init_cabac_decoder(CABACContext *c, const uint8_t *buf, int buf_size);
50 
51 #endif /* AVCODEC_CABAC_H */