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/*
* MP3val - a program for MPEG audio file validation
* Copyright (C) 2005-2007 Alexey Kuznetsov (ring0) and Eugen Tikhonov (jetsys)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "crc.h"
unsigned int CalculateCRC16(unsigned int init, unsigned int polynom, char *buf, int cb) {
int crc;
int i,j;
crc=init&0xFFFF;
for(i=0;i<=cb-1;i++) {
crc<<=8;
((char *)&crc)[2]^=buf[i];
for(j=0;j<=7;j++) {
if((crc<<j)&0x00800000) {
crc^=(polynom<<(7-j));
}
}
crc&=0xFFFF;
}
return crc;
}
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