repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2006 Mans Rullgard | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 6 | * FFmpeg is free software; you can redistribute it and/or | |
| 7 | * modify it under the terms of the GNU Lesser General Public | |
| 8 | * License as published by the Free Software Foundation; either | |
| 9 | * version 2.1 of the License, or (at your option) any later version. | |
| 10 | * | |
| 11 | * FFmpeg is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | * Lesser General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU Lesser General Public | |
| 17 | * License along with FFmpeg; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 19 | */ | |
| 20 | ||
| 21 | #ifndef AVUTIL_ADLER32_H | |
| 22 | #define AVUTIL_ADLER32_H | |
| 23 | ||
| 24 | #include <stdint.h> | |
| 25 | #include "attributes.h" | |
| 26 | ||
| 27 | /** | |
| 28 | * @file | |
| 29 | * Public header for libavutil Adler32 hasher | |
| 30 | * | |
| 31 | * @defgroup lavu_adler32 Adler32 | |
| 32 | * @ingroup lavu_crypto | |
| 33 | * @{ | |
| 34 | */ | |
| 35 | ||
| 36 | /** | |
| 37 | * Calculate the Adler32 checksum of a buffer. | |
| 38 | * | |
| 39 | * Passing the return value to a subsequent av_adler32_update() call | |
| 40 | * allows the checksum of multiple buffers to be calculated as though | |
| 41 | * they were concatenated. | |
| 42 | * | |
| 43 | * @param adler initial checksum value | |
| 44 | * @param buf pointer to input buffer | |
| 45 | * @param len size of input buffer | |
| 46 | * @return updated checksum | |
| 47 | */ | |
| 48 | unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, | |
| 49 | unsigned int len) av_pure; | |
| 50 | ||
| 51 | /** | |
| 52 | * @} | |
| 53 | */ | |
| 54 | ||
| 55 | #endif /* AVUTIL_ADLER32_H */ |