mirror of
https://github.com/opencv/opencv.git
synced 2024-12-27 03:14:05 +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
30 lines
749 B
C
30 lines
749 B
C
/* adler32_ssse3_p.h -- adler32 ssse3 utility functions
|
|
* Copyright (C) 2022 Adam Stylinski
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
#ifndef ADLER32_SSSE3_P_H_
|
|
#define ADLER32_SSSE3_P_H_
|
|
|
|
#ifdef X86_SSSE3
|
|
|
|
#include <immintrin.h>
|
|
#include <stdint.h>
|
|
|
|
static inline uint32_t partial_hsum(__m128i x) {
|
|
__m128i second_int = _mm_srli_si128(x, 8);
|
|
__m128i sum = _mm_add_epi32(x, second_int);
|
|
return _mm_cvtsi128_si32(sum);
|
|
}
|
|
|
|
static inline uint32_t hsum(__m128i x) {
|
|
__m128i sum1 = _mm_unpackhi_epi64(x, x);
|
|
__m128i sum2 = _mm_add_epi32(x, sum1);
|
|
__m128i sum3 = _mm_shuffle_epi32(sum2, 0x01);
|
|
__m128i sum4 = _mm_add_epi32(sum2, sum3);
|
|
return _mm_cvtsi128_si32(sum4);
|
|
}
|
|
#endif
|
|
|
|
#endif
|