Group PJLIB_UTIL_CRC32¶
- group PJLIB_UTIL_CRC32
This implements CRC32 algorithm. See ITU-T V.42 for the formal specification.
Functions
-
void pj_crc32_init(pj_crc32_context *ctx)¶
Initialize CRC32 context.
- Parameters
ctx – CRC32 context.
-
pj_uint32_t pj_crc32_update(pj_crc32_context *ctx, const pj_uint8_t *data, pj_size_t nbytes)¶
Feed data incrementally to the CRC32 algorithm.
- Parameters
ctx – CRC32 context.
data – Input data.
nbytes – Length of the input data.
- Returns
The current CRC32 value.
-
pj_uint32_t pj_crc32_final(pj_crc32_context *ctx)¶
Finalize CRC32 calculation and retrieve the CRC32 value.
- Parameters
ctx – CRC32 context.
- Returns
The current CRC value.
-
pj_uint32_t pj_crc32_calc(const pj_uint8_t *data, pj_size_t nbytes)¶
Perform one-off CRC32 calculation to the specified data.
- Parameters
data – Input data.
nbytes – Length of input data.
- Returns
CRC value of the data.
-
struct pj_crc32_context¶
- #include <crc32.h>
CRC32 context.
-
void pj_crc32_init(pj_crc32_context *ctx)¶