| /* |
| * copyright (c) 2006 Mans Rullgard |
| * |
| * This file is part of Libav. |
| * |
| * Libav 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. |
| * |
| * Libav 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 Libav; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #ifndef AVUTIL_ADLER32_H |
| #define AVUTIL_ADLER32_H |
| |
| #include <stdint.h> |
| #include "attributes.h" |
| |
| /** |
| * @ingroup lavu_crypto |
| * Calculate the Adler32 checksum of a buffer. |
| * |
| * Passing the return value to a subsequent av_adler32_update() call |
| * allows the checksum of multiple buffers to be calculated as though |
| * they were concatenated. |
| * |
| * @param adler initial checksum value |
| * @param buf pointer to input buffer |
| * @param len size of input buffer |
| * @return updated checksum |
| */ |
| unsigned long av_adler32_update(unsigned long adler, const uint8_t *buf, |
| unsigned int len) av_pure; |
| |
| #endif /* AVUTIL_ADLER32_H */ |
