diff options
Diffstat (limited to 'lib/dvb/crc32.h')
| -rw-r--r-- | lib/dvb/crc32.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/dvb/crc32.h b/lib/dvb/crc32.h new file mode 100644 index 00000000..99254532 --- /dev/null +++ b/lib/dvb/crc32.h @@ -0,0 +1,22 @@ +#ifndef CRC32_H +#define CRC32_H + +/* $Id: crc32.h,v 1.1 2003-10-17 15:35:49 tmbinc Exp $ */ + +typedef unsigned int uint32_t; + +extern const uint32_t crc32_table[256]; + +/* Return a 32-bit CRC of the contents of the buffer. */ + +static inline uint32_t +crc32(uint32_t val, const void *ss, int len) +{ + const unsigned char *s =(const unsigned char *) ss; + while (--len >= 0) +// val = crc32_table[(val ^ *s++) & 0xff] ^ (val >> 8); + val = (val << 8) ^ crc32_table[(val >> 24) ^ *s++]; + return val; +} + +#endif |
