frodovdr/vdr
1
0
Fork 0
mirror of https://github.com/vdr-projects/vdr.git synced 2025-03-01 10:50:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

Avoiding unnecessary calls to getLength() in libsi/si.c, and avoiding the '& 0xff' in CRC32::crc32() of libsi/util.c

Browse Source
This commit is contained in:
Klaus Schmidinger
2005-05-28 14:19:16 +02:00
parent ae3da0bcec
commit 1e63fa4174
4 changed files with 28 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
libsi/util.c
View File

@@ -6,7 +6,7 @@
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* $Id: util.c 1.4 2004/10/16 09:58:41 kls Exp $
* $Id: util.c 1.5 2005/05/28 14:15:29 kls Exp $
* *
***************************************************************************/
@@ -263,9 +263,10 @@ u_int32_t CRC32::crc_table[256] = {
u_int32_t CRC32::crc32 (const char *d, int len, u_int32_t crc)
{
register int i;
const unsigned char *u=(unsigned char*)d; // Saves '& 0xff'
for (i=0; i<len; i++)
crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *d++) & 0xff];
crc = (crc << 8) ^ crc_table[((crc >> 24) ^ *u++)];
return crc;
}