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-rw-r--r--src/jake2/qcommon/CRC.java300
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)
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-11 10:04:59 +0000