diff options
Diffstat (limited to 'src/jake2')
| -rw-r--r-- | src/jake2/qcommon/CRC.java | 300 |
1 files changed, 38 insertions, 262 deletions
diff --git a/src/jake2/qcommon/CRC.java b/src/jake2/qcommon/CRC.java index ca22d9b..1a315cf 100644 --- a/src/jake2/qcommon/CRC.java +++ b/src/jake2/qcommon/CRC.java @@ -19,7 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ // Created on 25.01.2004 by RST. -// $Id: CRC.java,v 1.1 2004-07-09 06:50:49 hzi Exp $ +// $Id: CRC.java,v 1.2 2005-01-23 01:19:06 cawe Exp $ package jake2.qcommon; import jake2.util.Vargs; @@ -30,266 +30,41 @@ public class CRC public final static short CRC_INIT_VALUE= (short) 0xffff; public final static short CRC_XOR_VALUE= (short) 0x0000; - private static int crctable[]= - { - 0x0000, - 0x1021, - 0x2042, - 0x3063, - 0x4084, - 0x50a5, - 0x60c6, - 0x70e7, - 0x8108, - 0x9129, - 0xa14a, - 0xb16b, - 0xc18c, - 0xd1ad, - 0xe1ce, - 0xf1ef, - 0x1231, - 0x0210, - 0x3273, - 0x2252, - 0x52b5, - 0x4294, - 0x72f7, - 0x62d6, - 0x9339, - 0x8318, - 0xb37b, - 0xa35a, - 0xd3bd, - 0xc39c, - 0xf3ff, - 0xe3de, - 0x2462, - 0x3443, - 0x0420, - 0x1401, - 0x64e6, - 0x74c7, - 0x44a4, - 0x5485, - 0xa56a, - 0xb54b, - 0x8528, - 0x9509, - 0xe5ee, - 0xf5cf, - 0xc5ac, - 0xd58d, - 0x3653, - 0x2672, - 0x1611, - 0x0630, - 0x76d7, - 0x66f6, - 0x5695, - 0x46b4, - 0xb75b, - 0xa77a, - 0x9719, - 0x8738, - 0xf7df, - 0xe7fe, - 0xd79d, - 0xc7bc, - 0x48c4, - 0x58e5, - 0x6886, - 0x78a7, - 0x0840, - 0x1861, - 0x2802, - 0x3823, - 0xc9cc, - 0xd9ed, - 0xe98e, - 0xf9af, - 0x8948, - 0x9969, - 0xa90a, - 0xb92b, - 0x5af5, - 0x4ad4, - 0x7ab7, - 0x6a96, - 0x1a71, - 0x0a50, - 0x3a33, - 0x2a12, - 0xdbfd, - 0xcbdc, - 0xfbbf, - 0xeb9e, - 0x9b79, - 0x8b58, - 0xbb3b, - 0xab1a, - 0x6ca6, - 0x7c87, - 0x4ce4, - 0x5cc5, - 0x2c22, - 0x3c03, - 0x0c60, - 0x1c41, - 0xedae, - 0xfd8f, - 0xcdec, - 0xddcd, - 0xad2a, - 0xbd0b, - 0x8d68, - 0x9d49, - 0x7e97, - 0x6eb6, - 0x5ed5, - 0x4ef4, - 0x3e13, - 0x2e32, - 0x1e51, - 0x0e70, - 0xff9f, - 0xefbe, - 0xdfdd, - 0xcffc, - 0xbf1b, - 0xaf3a, - 0x9f59, - 0x8f78, - 0x9188, - 0x81a9, - 0xb1ca, - 0xa1eb, - 0xd10c, - 0xc12d, - 0xf14e, - 0xe16f, - 0x1080, - 0x00a1, - 0x30c2, - 0x20e3, - 0x5004, - 0x4025, - 0x7046, - 0x6067, - 0x83b9, - 0x9398, - 0xa3fb, - 0xb3da, - 0xc33d, - 0xd31c, - 0xe37f, - 0xf35e, - 0x02b1, - 0x1290, - 0x22f3, - 0x32d2, - 0x4235, - 0x5214, - 0x6277, - 0x7256, - 0xb5ea, - 0xa5cb, - 0x95a8, - 0x8589, - 0xf56e, - 0xe54f, - 0xd52c, - 0xc50d, - 0x34e2, - 0x24c3, - 0x14a0, - 0x0481, - 0x7466, - 0x6447, - 0x5424, - 0x4405, - 0xa7db, - 0xb7fa, - 0x8799, - 0x97b8, - 0xe75f, - 0xf77e, - 0xc71d, - 0xd73c, - 0x26d3, - 0x36f2, - 0x0691, - 0x16b0, - 0x6657, - 0x7676, - 0x4615, - 0x5634, - 0xd94c, - 0xc96d, - 0xf90e, - 0xe92f, - 0x99c8, - 0x89e9, - 0xb98a, - 0xa9ab, - 0x5844, - 0x4865, - 0x7806, - 0x6827, - 0x18c0, - 0x08e1, - 0x3882, - 0x28a3, - 0xcb7d, - 0xdb5c, - 0xeb3f, - 0xfb1e, - 0x8bf9, - 0x9bd8, - 0xabbb, - 0xbb9a, - 0x4a75, - 0x5a54, - 0x6a37, - 0x7a16, - 0x0af1, - 0x1ad0, - 0x2ab3, - 0x3a92, - 0xfd2e, - 0xed0f, - 0xdd6c, - 0xcd4d, - 0xbdaa, - 0xad8b, - 0x9de8, - 0x8dc9, - 0x7c26, - 0x6c07, - 0x5c64, - 0x4c45, - 0x3ca2, - 0x2c83, - 0x1ce0, - 0x0cc1, - 0xef1f, - 0xff3e, - 0xcf5d, - 0xdf7c, - 0xaf9b, - 0xbfba, - 0x8fd9, - 0x9ff8, - 0x6e17, - 0x7e36, - 0x4e55, - 0x5e74, - 0x2e93, - 0x3eb2, - 0x0ed1, - 0x1ef0 }; - - static short CRC_Block(byte start[], int count) + private static int crctable[] = { 0x0000, 0x1021, 0x2042, 0x3063, 0x4084, + 0x50a5, 0x60c6, 0x70e7, 0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, + 0xd1ad, 0xe1ce, 0xf1ef, 0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, + 0x4294, 0x72f7, 0x62d6, 0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, + 0xc39c, 0xf3ff, 0xe3de, 0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, + 0x74c7, 0x44a4, 0x5485, 0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, + 0xf5cf, 0xc5ac, 0xd58d, 0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, + 0x66f6, 0x5695, 0x46b4, 0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, + 0xe7fe, 0xd79d, 0xc7bc, 0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, + 0x1861, 0x2802, 0x3823, 0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, + 0x9969, 0xa90a, 0xb92b, 0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, + 0x0a50, 0x3a33, 0x2a12, 0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, + 0x8b58, 0xbb3b, 0xab1a, 0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, + 0x3c03, 0x0c60, 0x1c41, 0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, + 0xbd0b, 0x8d68, 0x9d49, 0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, + 0x2e32, 0x1e51, 0x0e70, 0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, + 0xaf3a, 0x9f59, 0x8f78, 0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, + 0xc12d, 0xf14e, 0xe16f, 0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, + 0x4025, 0x7046, 0x6067, 0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, + 0xd31c, 0xe37f, 0xf35e, 0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, + 0x5214, 0x6277, 0x7256, 0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, + 0xe54f, 0xd52c, 0xc50d, 0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, + 0x6447, 0x5424, 0x4405, 0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, + 0xf77e, 0xc71d, 0xd73c, 0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, + 0x7676, 0x4615, 0x5634, 0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, + 0x89e9, 0xb98a, 0xa9ab, 0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, + 0x08e1, 0x3882, 0x28a3, 0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, + 0x9bd8, 0xabbb, 0xbb9a, 0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, + 0x1ad0, 0x2ab3, 0x3a92, 0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, + 0xad8b, 0x9de8, 0x8dc9, 0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, + 0x2c83, 0x1ce0, 0x0cc1, 0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, + 0xbfba, 0x8fd9, 0x9ff8, 0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, + 0x3eb2, 0x0ed1, 0x1ef0 }; + + static int CRC_Block(byte start[], int count) { short crc= CRC_INIT_VALUE; @@ -298,7 +73,8 @@ public class CRC while (count-- > 0) crc= (short) ((crc << 8) ^ crctable[0xff & ((crc >> 8) ^ start[ndx++])]); - return crc; + // unsigned short + return crc & 0xFFFF; } public static void main(String[] args) |