diff options
| -rw-r--r-- | src/liblzma/api/lzma/check.h | 41 |
1 files changed, 28 insertions, 13 deletions
diff --git a/src/liblzma/api/lzma/check.h b/src/liblzma/api/lzma/check.h index c7336ae5..5d793959 100644 --- a/src/liblzma/api/lzma/check.h +++ b/src/liblzma/api/lzma/check.h @@ -72,12 +72,17 @@ typedef enum { /** * \brief Test if the given Check ID is supported * - * Return true if the given Check ID is supported by this liblzma build. - * Otherwise false is returned. It is safe to call this with a value that - * is not in the range [0, 15]; in that case the return value is always false. + * LZMA_CHECK_NONE and LZMA_CHECK_CRC32 are always supported (even if + * liblzma is built with limited features). * - * You can assume that LZMA_CHECK_NONE and LZMA_CHECK_CRC32 are always - * supported (even if liblzma is built with limited features). + * \note It is safe to call this with a value that is not in the + * range [0, 15]; in that case the return value is always false. + * + * \param check Check ID + * + * \return lzma_bool: + * - true if Check ID is supported by this liblzma build. + * - false otherwise. */ extern LZMA_API(lzma_bool) lzma_check_is_supported(lzma_check check) lzma_nothrow lzma_attr_const; @@ -91,7 +96,10 @@ extern LZMA_API(lzma_bool) lzma_check_is_supported(lzma_check check) * the Check field with the specified Check ID. The values are: * { 0, 4, 4, 4, 8, 8, 8, 16, 16, 16, 32, 32, 32, 64, 64, 64 } * - * If the argument is not in the range [0, 15], UINT32_MAX is returned. + * \param check Check ID + * + * \return Size of the Check field in bytes. If the argument is not in + * the range [0, 15], UINT32_MAX is returned. */ extern LZMA_API(uint32_t) lzma_check_size(lzma_check check) lzma_nothrow lzma_attr_const; @@ -127,25 +135,32 @@ extern LZMA_API(uint32_t) lzma_crc32( * * Calculate CRC64 using the polynomial from the ECMA-182 standard. * - * This function is used similarly to lzma_crc32(). See its documentation. + * This function is used similarly to lzma_crc32(). + * + * \param buf Pointer to the input buffer + * \param size Size of the input buffer + * \param crc Previously returned CRC value. This is used to + * calculate the CRC of a big buffer in smaller chunks. + * Set to zero when starting a new calculation. + * + * \return Updated CRC value, which can be passed to this function + * again to continue CRC calculation. */ extern LZMA_API(uint64_t) lzma_crc64( const uint8_t *buf, size_t size, uint64_t crc) lzma_nothrow lzma_attr_pure; -/* - * SHA-256 functions are currently not exported to public API. - * Contact Lasse Collin if you think it should be. - */ - - /** * \brief Get the type of the integrity check * * This function can be called only immediately after lzma_code() has * returned LZMA_NO_CHECK, LZMA_UNSUPPORTED_CHECK, or LZMA_GET_CHECK. * Calling this function in any other situation has undefined behavior. + * + * \param strm Pointer to lzma_stream meeting the above conditions. + * + * \return Check ID in the lzma_stream, or undefined if called improperly. */ extern LZMA_API(lzma_check) lzma_get_check(const lzma_stream *strm) lzma_nothrow; |