mirror of
https://github.com/opencv/opencv.git
synced 2025-01-07 11:41:48 +08:00
0de26fd78e
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
25 lines
661 B
C
25 lines
661 B
C
/* insert_string_sse42.c -- insert_string integer hash variant using SSE4.2's CRC instructions
|
|
*
|
|
* Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*
|
|
*/
|
|
|
|
#ifdef X86_SSE42
|
|
#include "../../zbuild.h"
|
|
#include <nmmintrin.h>
|
|
#include "../../deflate.h"
|
|
|
|
#define HASH_CALC(s, h, val)\
|
|
h = _mm_crc32_u32(h, val)
|
|
|
|
#define HASH_CALC_VAR h
|
|
#define HASH_CALC_VAR_INIT uint32_t h = 0
|
|
|
|
#define UPDATE_HASH update_hash_sse42
|
|
#define INSERT_STRING insert_string_sse42
|
|
#define QUICK_INSERT_STRING quick_insert_string_sse42
|
|
|
|
#include "../../insert_string_tpl.h"
|
|
#endif
|