/*    Copyright (C) 2008 Petter Wahlman    Tvixfw 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 3 of the License, or    (at your option) any later version.    Tvixfw 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 Tvixfw.  If not, see <http://www.gnu.org/licenses/>.*/#include <stdio.h>#include <stdlib.h>#include <tvixfw.h>#include <tvix_crc.h>u32 *crctable = (u32*) crcbytes;int calc_crc(unsigned char *buf, int size, u32 *crc){   u32 v1;   u32 v0;   unsigned char t;   int rc = 1;   printf("calculating crc...\n");   do {      v0 = *crc;      t = *buf;      v1 = t;      v1 = v1 ^ v0;      v1 = v1 & 0xff;      v0 = v0 >> 8;      v1 = crctable[v1];      v0 = v0 ^v1;      *crc = v0;      buf++;   } while(--size);   if (!*crc)      rc = 0;   printf("   crc: %02x %02x %02x %02x\n",          (*crc & 0x000000ff),          (*crc & 0x0000ff00) >> 8,          (*crc & 0x00ff0000) >> 16,          (*crc & 0xff000000) >> 24);   return rc;}