Group PJLIB_UTIL_CRC32¶
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group
PJLIB_UTIL_CRC32
This implements CRC32 algorithm. See ITU-T V.42 for the formal specification.
Functions
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void
pj_crc32_init
(pj_crc32_context *ctx)¶ Initialize CRC32 context.
- Parameters
ctx – CRC32 context.
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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.
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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.
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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.
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struct
pj_crc32_context
¶ - #include <crc32.h>
CRC32 context.
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void