mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-11 17:55:21 +00:00
f73495686d
Based on a patch by James Almer <jamrial@gmail.com>. Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
/*
|
|
* 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"
|
|
|
|
/**
|
|
* @file
|
|
* Public header for libavutil Adler32 hasher
|
|
*
|
|
* @defgroup lavu_adler32 Adler32
|
|
* @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 */
|