opencv/3rdparty/zlib-ng/arch/generic/adler32_fold_c.c

/* adler32_fold.c -- adler32 folding interface
 * Copyright (C) 2022 Adam Stylinski
 * For conditions of distribution and use, see copyright notice in zlib.h
 */

#include "zbuild.h"
#include "functable.h"

#include <limits.h>

Z_INTERNAL uint32_t adler32_fold_copy_c(uint32_t adler, uint8_t *dst, const uint8_t *src, size_t len) {
    adler = FUNCTABLE_CALL(adler32)(adler, src, len);
    memcpy(dst, src, len);
    return adler;
}
Add zlib-ng as an alternative zlib implementation Zlib-ng is zlib replacement with optimizations for "next generation" systems. Its optimization may benifits image library decode and encode speed such as libpng. In our tests, if using zlib-ng and libpng combination on a x86_64 machine with AVX2, the time of `imdecode` amd `imencode` will drop 20% approximately. This patch enables zlib-ng's optimization if `CV_DISABLE_OPTIMIZATION` is OFF. Since Zlib-ng can dispatch intrinsics on the fly, port work is much easier. Related discussion: https://github.com/opencv/opencv/issues/22573 2023-12-27 12:06:17 +08:00			`/* adler32_fold.c -- adler32 folding interface`
			`* Copyright (C) 2022 Adam Stylinski`
			`* For conditions of distribution and use, see copyright notice in zlib.h`
			`*/`

			`#include "zbuild.h"`
			`#include "functable.h"`

			`#include <limits.h>`

			`Z_INTERNAL uint32_t adler32_fold_copy_c(uint32_t adler, uint8_t dst, const uint8_t src, size_t len) {`
Merge pull request #26113 from FantasqueX:zlib-ng-2-2-1 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 2024-09-12 21:05:24 +08:00			`adler = FUNCTABLE_CALL(adler32)(adler, src, len);`
Add zlib-ng as an alternative zlib implementation Zlib-ng is zlib replacement with optimizations for "next generation" systems. Its optimization may benifits image library decode and encode speed such as libpng. In our tests, if using zlib-ng and libpng combination on a x86_64 machine with AVX2, the time of `imdecode` amd `imencode` will drop 20% approximately. This patch enables zlib-ng's optimization if `CV_DISABLE_OPTIMIZATION` is OFF. Since Zlib-ng can dispatch intrinsics on the fly, port work is much easier. Related discussion: https://github.com/opencv/opencv/issues/22573 2023-12-27 12:06:17 +08:00			`memcpy(dst, src, len);`
			`return adler;`
			`}`