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72 lines
1.8 KiB
72 lines
1.8 KiB
/* |
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* copyright (c) 2006 Mans Rullgard |
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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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* @ingroup lavu_adler32 |
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* Public header for Adler-32 hash function implementation. |
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*/ |
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#ifndef AVUTIL_ADLER32_H |
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#define AVUTIL_ADLER32_H |
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#include <stddef.h> |
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#include <stdint.h> |
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#include "attributes.h" |
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#include "version.h" |
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/** |
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* @defgroup lavu_adler32 Adler-32 |
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* @ingroup lavu_hash |
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* Adler-32 hash function implementation. |
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* |
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* @{ |
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*/ |
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#if FF_API_CRYPTO_SIZE_T |
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typedef unsigned long AVAdler; |
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#else |
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typedef uint32_t AVAdler; |
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#endif |
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/** |
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* Calculate the Adler32 checksum of a buffer. |
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* |
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* Passing the return value to a subsequent av_adler32_update() call |
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* allows the checksum of multiple buffers to be calculated as though |
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* they were concatenated. |
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* |
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* @param adler initial checksum value |
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* @param buf pointer to input buffer |
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* @param len size of input buffer |
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* @return updated checksum |
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*/ |
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AVAdler av_adler32_update(AVAdler adler, const uint8_t *buf, |
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#if FF_API_CRYPTO_SIZE_T |
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unsigned int len) av_pure; |
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#else |
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size_t len) av_pure; |
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#endif |
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/** |
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* @} |
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*/ |
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#endif /* AVUTIL_ADLER32_H */
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