1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/*
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
*
* 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
*/
#ifndef CRC_H
#define CRC_H
typedef uint32_t AVCRC;
#if LIBAVUTIL_VERSION_INT < (50<<16)
extern AVCRC *av_crcEDB88320;
extern AVCRC *av_crc04C11DB7;
extern AVCRC *av_crc8005 ;
extern AVCRC *av_crc07 ;
#else
extern AVCRC av_crcEDB88320[];
extern AVCRC av_crc04C11DB7[];
extern AVCRC av_crc8005 [];
extern AVCRC av_crc07 [];
#endif
int av_crc_init(AVCRC *ctx, int le, int bits, uint32_t poly, int ctx_size);
uint32_t av_crc(const AVCRC *ctx, uint32_t start_crc, const uint8_t *buffer, size_t length);
#endif /* CRC_H */
|
