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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
31 lines
979 B
C
31 lines
979 B
C
/*
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* Compute the CRC32 using a parallelized folding approach with the PCLMULQDQ
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* instruction.
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*
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* A white paper describing this algorithm can be found at:
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* doc/crc-pclmulqdq.pdf
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*
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* Copyright (C) 2013 Intel Corporation. All rights reserved.
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* Copyright (C) 2016 Marian Beermann (support for initial value)
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* Authors:
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* Wajdi Feghali <wajdi.k.feghali@intel.com>
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* Jim Guilford <james.guilford@intel.com>
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* Vinodh Gopal <vinodh.gopal@intel.com>
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* Erdinc Ozturk <erdinc.ozturk@intel.com>
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* Jim Kukunas <james.t.kukunas@linux.intel.com>
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*
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifdef X86_PCLMULQDQ_CRC
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#define CRC32_FOLD_COPY crc32_fold_pclmulqdq_copy
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#define CRC32_FOLD crc32_fold_pclmulqdq
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#define CRC32_FOLD_RESET crc32_fold_pclmulqdq_reset
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#define CRC32_FOLD_FINAL crc32_fold_pclmulqdq_final
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#define CRC32 crc32_pclmulqdq
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#include "crc32_pclmulqdq_tpl.h"
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#endif
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