opencv/3rdparty/zlib-ng/insert_string_roll.c

/* insert_string_roll.c -- insert_string rolling hash variant
 *
 * Copyright (C) 1995-2024 Jean-loup Gailly and Mark Adler
 * For conditions of distribution and use, see copyright notice in zlib.h
 *
 */

#include "zbuild.h"
#include "deflate.h"

#define HASH_SLIDE           5

#define HASH_CALC(h, val)    h = ((h << HASH_SLIDE) ^ ((uint8_t)val))
#define HASH_CALC_VAR        s->ins_h
#define HASH_CALC_VAR_INIT
#define HASH_CALC_READ       val = strstart[0]
#define HASH_CALC_MASK       (32768u - 1u)
#define HASH_CALC_OFFSET     (STD_MIN_MATCH-1)

#define UPDATE_HASH          update_hash_roll
#define INSERT_STRING        insert_string_roll
#define QUICK_INSERT_STRING  quick_insert_string_roll

#include "insert_string_tpl.h"
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			`/* insert_string_roll.c -- insert_string rolling hash variant`
			`*`
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			`* Copyright (C) 1995-2024 Jean-loup Gailly and Mark 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			`* For conditions of distribution and use, see copyright notice in zlib.h`
			`*`
			`*/`

			`#include "zbuild.h"`
			`#include "deflate.h"`

			`#define HASH_SLIDE 5`

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			`#define HASH_CALC(h, val) h = ((h << HASH_SLIDE) ^ ((uint8_t)val))`
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			`#define HASH_CALC_VAR s->ins_h`
			`#define HASH_CALC_VAR_INIT`
			`#define HASH_CALC_READ val = strstart[0]`
			`#define HASH_CALC_MASK (32768u - 1u)`
			`#define HASH_CALC_OFFSET (STD_MIN_MATCH-1)`

			`#define UPDATE_HASH update_hash_roll`
			`#define INSERT_STRING insert_string_roll`
			`#define QUICK_INSERT_STRING quick_insert_string_roll`

			`#include "insert_string_tpl.h"`