Kamailio - The Open Source SIP Server: crc.h Source File

00001 /*
00002  * $Id: crc.h 4919 2008-09-15 16:57:51Z henningw $
00003  *
00004  * Copyright (C) 1986 Gary S. Brown.  You may use this program, or
00005  * code or tables extracted from it, as desired without restriction.
00006  * Copyright (C) 2001-2003 FhG Fokus
00007  *
00008  * This file is part of Kamailio, a free SIP server.
00009  *
00010  * Kamailio is free software; you can redistribute it and/or modify
00011  * it under the terms of the GNU General Public License as published by
00012  * the Free Software Foundation; either version 2 of the License, or
00013  * (at your option) any later version
00014  *
00015  * Kamailio is distributed in the hope that it will be useful,
00016  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00017  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00018  * GNU General Public License for more details.
00019  *
00020  * You should have received a copy of the GNU General Public License 
00021  * along with this program; if not, write to the Free Software 
00022  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00023  */
00024 
00025 #ifndef _CRC_H_
00026 #define _CRC_H_
00027 
00028 /*!
00029  * \file
00030  * \brief CRC - 32 + 16 BIT ANSI X3.66 + CCITT CRC checksum files
00031  * - \ref CRCImplementation
00032  */
00033 
00034 
00035 #include "str.h"
00036 
00037 #define CRC16_LEN 4
00038 
00039 extern unsigned long int crc_32_tab[];
00040 extern unsigned short int ccitt_tab[];
00041 extern unsigned short int crc_16_tab[];
00042 
00043 unsigned short crcitt_string( char *s, int len );
00044 void crcitt_string_array( char *dst, str src[], int size );
00045 
00046 void crc32_uint(str *source_string, unsigned int *hash_ret);
00047 
00048 #endif /* _CRC_H_ */