mirror of
https://github.com/opencv/opencv.git
synced 2024-12-16 10:29:11 +08:00
85923c8f30
Update zlib-ng to 2.2.1 #26113 Release: https://github.com/zlib-ng/zlib-ng/releases/tag/2.2.1 ARM diagnostics patch: https://github.com/zlib-ng/zlib-ng/pull/1774 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [ ] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
/* crc32_fold.c -- crc32 folding interface
|
|
* Copyright (C) 2021 Nathan Moinvaziri
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
#include "zbuild.h"
|
|
#include "zutil.h"
|
|
#include "functable.h"
|
|
#include "crc32.h"
|
|
|
|
Z_INTERNAL uint32_t crc32_fold_reset_c(crc32_fold *crc) {
|
|
crc->value = CRC32_INITIAL_VALUE;
|
|
return crc->value;
|
|
}
|
|
|
|
Z_INTERNAL void crc32_fold_copy_c(crc32_fold *crc, uint8_t *dst, const uint8_t *src, size_t len) {
|
|
crc->value = FUNCTABLE_CALL(crc32)(crc->value, src, len);
|
|
memcpy(dst, src, len);
|
|
}
|
|
|
|
Z_INTERNAL void crc32_fold_c(crc32_fold *crc, const uint8_t *src, size_t len, uint32_t init_crc) {
|
|
/* Note: while this is basically the same thing as the vanilla CRC function, we still need
|
|
* a functable entry for it so that we can generically dispatch to this function with the
|
|
* same arguments for the versions that _do_ do a folding CRC but we don't want a copy. The
|
|
* init_crc is an unused argument in this context */
|
|
Z_UNUSED(init_crc);
|
|
crc->value = FUNCTABLE_CALL(crc32)(crc->value, src, len);
|
|
}
|
|
|
|
Z_INTERNAL uint32_t crc32_fold_final_c(crc32_fold *crc) {
|
|
return crc->value;
|
|
}
|