mirror of https://github.com/opencv/opencv.git
Maksim Shabunin
10 years ago
parent
44f112a9de
commit
35b2139929
19 changed files with 641 additions and 415 deletions
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set(the_description "The Hardware Acceleration Layer (HAL) module") |
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set(OPENCV_MODULE_TYPE STATIC) |
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# set(OPENCV_MODULE_IS_PART_OF_WORLD FALSE) |
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if(UNIX) |
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if(CMAKE_COMPILER_IS_GNUCXX OR CV_ICC) |
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set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC") |
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endif() |
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endif() |
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ocv_define_module(hal) |
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@ -0,0 +1,74 @@ |
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
|
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// By downloading, copying, installing or using the software you agree to this license.
|
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// If you do not agree to this license, do not download, install,
|
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// copy or use the software.
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//
|
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//
|
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// License Agreement
|
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
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// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
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// Copyright (C) 2015, Itseez Inc., all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
|
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// Redistribution and use in source and binary forms, with or without modification,
|
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// are permitted provided that the following conditions are met:
|
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//
|
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// * Redistribution's of source code must retain the above copyright notice,
|
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// this list of conditions and the following disclaimer.
|
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//
|
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// * Redistribution's in binary form must reproduce the above copyright notice,
|
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// this list of conditions and the following disclaimer in the documentation
|
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// and/or other materials provided with the distribution.
|
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//
|
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// * The name of the copyright holders may not be used to endorse or promote products
|
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// derived from this software without specific prior written permission.
|
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//
|
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// This software is provided by the copyright holders and contributors "as is" and
|
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// any express or implied warranties, including, but not limited to, the implied
|
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
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// In no event shall the Intel Corporation or contributors be liable for any direct,
|
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
|
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
|
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// or tort (including negligence or otherwise) arising in any way out of
|
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef __OPENCV_HAL_HPP__ |
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#define __OPENCV_HAL_HPP__ |
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#include "opencv2/hal/defs.h" |
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/**
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@defgroup hal Hardware Acceleration Layer |
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*/ |
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namespace cv { namespace hal { |
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namespace Error { |
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enum Code |
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{ |
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Ok = 0, |
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Unknown = -1 |
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}; |
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} |
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Error::Code normHamming(const uchar* a, int n, int & result); |
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Error::Code normHamming(const uchar* a, const uchar* b, int n, int & result); |
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Error::Code normHamming(const uchar* a, int n, int cellSize, int & result); |
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Error::Code normHamming(const uchar* a, const uchar* b, int n, int cellSize, int & result); |
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}} //cv::hal
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#endif //__OPENCV_HAL_HPP__
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@ -0,0 +1,284 @@ |
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
|
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// By downloading, copying, installing or using the software you agree to this license.
|
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// If you do not agree to this license, do not download, install,
|
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// copy or use the software.
|
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//
|
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//
|
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// License Agreement
|
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// For Open Source Computer Vision Library
|
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//
|
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
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// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
|
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// Copyright (C) 2013, OpenCV Foundation, all rights reserved.
|
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// Copyright (C) 2015, Itseez Inc., all rights reserved.
|
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// Third party copyrights are property of their respective owners.
|
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//
|
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// Redistribution and use in source and binary forms, with or without modification,
|
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// are permitted provided that the following conditions are met:
|
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//
|
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// * Redistribution's of source code must retain the above copyright notice,
|
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// this list of conditions and the following disclaimer.
|
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//
|
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// * Redistribution's in binary form must reproduce the above copyright notice,
|
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// this list of conditions and the following disclaimer in the documentation
|
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// and/or other materials provided with the distribution.
|
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//
|
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// * The name of the copyright holders may not be used to endorse or promote products
|
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// derived from this software without specific prior written permission.
|
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//
|
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// This software is provided by the copyright holders and contributors "as is" and
|
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// any express or implied warranties, including, but not limited to, the implied
|
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
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// In no event shall the Intel Corporation or contributors be liable for any direct,
|
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// indirect, incidental, special, exemplary, or consequential damages
|
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// (including, but not limited to, procurement of substitute goods or services;
|
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// loss of use, data, or profits; or business interruption) however caused
|
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// and on any theory of liability, whether in contract, strict liability,
|
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#ifndef __OPENCV_DEF_H__ |
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#define __OPENCV_DEF_H__ |
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#if !defined _CRT_SECURE_NO_DEPRECATE && defined _MSC_VER && _MSC_VER > 1300 |
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# define _CRT_SECURE_NO_DEPRECATE /* to avoid multiple Visual Studio warnings */ |
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#endif |
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#if defined __ICL |
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# define CV_ICC __ICL |
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#elif defined __ICC |
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# define CV_ICC __ICC |
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#elif defined __ECL |
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# define CV_ICC __ECL |
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#elif defined __ECC |
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# define CV_ICC __ECC |
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#elif defined __INTEL_COMPILER |
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# define CV_ICC __INTEL_COMPILER |
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#endif |
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#if defined CV_ICC && !defined CV_ENABLE_UNROLLED |
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# define CV_ENABLE_UNROLLED 0 |
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#else |
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# define CV_ENABLE_UNROLLED 1 |
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#endif |
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/* CPU features and intrinsics support */ |
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#define CV_CPU_NONE 0 |
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#define CV_CPU_MMX 1 |
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#define CV_CPU_SSE 2 |
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#define CV_CPU_SSE2 3 |
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#define CV_CPU_SSE3 4 |
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#define CV_CPU_SSSE3 5 |
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#define CV_CPU_SSE4_1 6 |
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#define CV_CPU_SSE4_2 7 |
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#define CV_CPU_POPCNT 8 |
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#define CV_CPU_AVX 10 |
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#define CV_CPU_AVX2 11 |
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#define CV_CPU_FMA3 12 |
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#define CV_CPU_AVX_512F 13 |
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#define CV_CPU_AVX_512BW 14 |
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#define CV_CPU_AVX_512CD 15 |
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#define CV_CPU_AVX_512DQ 16 |
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#define CV_CPU_AVX_512ER 17 |
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#define CV_CPU_AVX_512IFMA512 18 |
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#define CV_CPU_AVX_512PF 19 |
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#define CV_CPU_AVX_512VBMI 20 |
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#define CV_CPU_AVX_512VL 21 |
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#define CV_CPU_NEON 100 |
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// when adding to this list remember to update the enum in core/utility.cpp
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#define CV_HARDWARE_MAX_FEATURE 255 |
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// do not include SSE/AVX/NEON headers for NVCC compiler
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#ifndef __CUDACC__ |
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#if defined __SSE2__ || defined _M_X64 || (defined _M_IX86_FP && _M_IX86_FP >= 2) |
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# include <emmintrin.h> |
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# define CV_MMX 1 |
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# define CV_SSE 1 |
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# define CV_SSE2 1 |
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# if defined __SSE3__ || (defined _MSC_VER && _MSC_VER >= 1500) |
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# include <pmmintrin.h> |
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# define CV_SSE3 1 |
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# endif |
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# if defined __SSSE3__ || (defined _MSC_VER && _MSC_VER >= 1500) |
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# include <tmmintrin.h> |
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# define CV_SSSE3 1 |
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# endif |
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# if defined __SSE4_1__ || (defined _MSC_VER && _MSC_VER >= 1500) |
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# include <smmintrin.h> |
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# define CV_SSE4_1 1 |
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# endif |
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# if defined __SSE4_2__ || (defined _MSC_VER && _MSC_VER >= 1500) |
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# include <nmmintrin.h> |
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# define CV_SSE4_2 1 |
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# endif |
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# if defined __POPCNT__ || (defined _MSC_VER && _MSC_VER >= 1500) |
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# ifdef _MSC_VER |
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# include <nmmintrin.h> |
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# else |
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# include <popcntintrin.h> |
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# endif |
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# define CV_POPCNT 1 |
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# endif |
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# if defined __AVX__ || (defined _MSC_VER && _MSC_VER >= 1600 && 0) |
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// MS Visual Studio 2010 (2012?) has no macro pre-defined to identify the use of /arch:AVX
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// See: http://connect.microsoft.com/VisualStudio/feedback/details/605858/arch-avx-should-define-a-predefined-macro-in-x64-and-set-a-unique-value-for-m-ix86-fp-in-win32
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# include <immintrin.h> |
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# define CV_AVX 1 |
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# if defined(_XCR_XFEATURE_ENABLED_MASK) |
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# define __xgetbv() _xgetbv(_XCR_XFEATURE_ENABLED_MASK) |
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# else |
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# define __xgetbv() 0 |
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# endif |
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# endif |
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# if defined __AVX2__ || (defined _MSC_VER && _MSC_VER >= 1800 && 0) |
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# include <immintrin.h> |
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# define CV_AVX2 1 |
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# if defined __FMA__ |
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# define CV_FMA3 1 |
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# endif |
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# endif |
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#endif |
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#if (defined WIN32 || defined _WIN32) && defined(_M_ARM) |
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# include <Intrin.h> |
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# include "arm_neon.h" |
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# define CV_NEON 1 |
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# define CPU_HAS_NEON_FEATURE (true) |
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#elif defined(__ARM_NEON__) || (defined (__ARM_NEON) && defined(__aarch64__)) |
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# include <arm_neon.h> |
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# define CV_NEON 1 |
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#endif |
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#if defined __GNUC__ && defined __arm__ && (defined __ARM_PCS_VFP || defined __ARM_VFPV3__) |
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# define CV_VFP 1 |
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#endif |
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#endif // __CUDACC__
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#ifndef CV_POPCNT |
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#define CV_POPCNT 0 |
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#endif |
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#ifndef CV_MMX |
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# define CV_MMX 0 |
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#endif |
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#ifndef CV_SSE |
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# define CV_SSE 0 |
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#endif |
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#ifndef CV_SSE2 |
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# define CV_SSE2 0 |
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#endif |
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#ifndef CV_SSE3 |
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# define CV_SSE3 0 |
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#endif |
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#ifndef CV_SSSE3 |
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# define CV_SSSE3 0 |
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#endif |
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#ifndef CV_SSE4_1 |
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# define CV_SSE4_1 0 |
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#endif |
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#ifndef CV_SSE4_2 |
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# define CV_SSE4_2 0 |
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#endif |
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#ifndef CV_AVX |
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# define CV_AVX 0 |
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#endif |
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#ifndef CV_AVX2 |
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# define CV_AVX2 0 |
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#endif |
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#ifndef CV_FMA3 |
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# define CV_FMA3 0 |
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#endif |
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#ifndef CV_AVX_512F |
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# define CV_AVX_512F 0 |
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#endif |
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#ifndef CV_AVX_512BW |
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# define CV_AVX_512BW 0 |
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#endif |
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#ifndef CV_AVX_512CD |
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# define CV_AVX_512CD 0 |
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#endif |
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#ifndef CV_AVX_512DQ |
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# define CV_AVX_512DQ 0 |
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#endif |
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#ifndef CV_AVX_512ER |
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# define CV_AVX_512ER 0 |
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#endif |
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#ifndef CV_AVX_512IFMA512 |
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# define CV_AVX_512IFMA512 0 |
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#endif |
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#ifndef CV_AVX_512PF |
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# define CV_AVX_512PF 0 |
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#endif |
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#ifndef CV_AVX_512VBMI |
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# define CV_AVX_512VBMI 0 |
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#endif |
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#ifndef CV_AVX_512VL |
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# define CV_AVX_512VL 0 |
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#endif |
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#ifndef CV_NEON |
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# define CV_NEON 0 |
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#endif |
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#ifndef CV_VFP |
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# define CV_VFP 0 |
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#endif |
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/* primitive types */ |
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/*
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schar - signed 1 byte integer |
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uchar - unsigned 1 byte integer |
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short - signed 2 byte integer |
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ushort - unsigned 2 byte integer |
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int - signed 4 byte integer |
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uint - unsigned 4 byte integer |
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int64 - signed 8 byte integer |
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uint64 - unsigned 8 byte integer |
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*/ |
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#if !defined _MSC_VER && !defined __BORLANDC__ |
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# if defined __cplusplus && __cplusplus >= 201103L |
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# include <cstdint> |
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typedef std::uint32_t uint; |
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# else |
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# include <stdint.h> |
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typedef uint32_t uint; |
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# endif |
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#else |
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typedef unsigned uint; |
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#endif |
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typedef signed char schar; |
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#ifndef __IPL_H__ |
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typedef unsigned char uchar; |
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typedef unsigned short ushort; |
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#endif |
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#if defined _MSC_VER || defined __BORLANDC__ |
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typedef __int64 int64; |
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typedef unsigned __int64 uint64; |
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# define CV_BIG_INT(n) n##I64 |
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# define CV_BIG_UINT(n) n##UI64 |
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#else |
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typedef int64_t int64; |
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typedef uint64_t uint64; |
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# define CV_BIG_INT(n) n##LL |
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# define CV_BIG_UINT(n) n##ULL |
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#endif |
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/* fundamental constants */ |
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#define CV_PI 3.1415926535897932384626433832795 |
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#define CV_2PI 6.283185307179586476925286766559 |
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#define CV_LOG2 0.69314718055994530941723212145818 |
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#endif //__OPENCV_HAL_H__
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@ -0,0 +1,184 @@ |
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/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
|
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//
|
||||
// By downloading, copying, installing or using the software you agree to this license.
|
||||
// If you do not agree to this license, do not download, install,
|
||||
// copy or use the software.
|
||||
//
|
||||
//
|
||||
// License Agreement
|
||||
// For Open Source Computer Vision Library
|
||||
//
|
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// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
|
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// Copyright (C) 2009-2011, Willow Garage Inc., all rights reserved.
|
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// Third party copyrights are property of their respective owners.
|
||||
//
|
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// Redistribution and use in source and binary forms, with or without modification,
|
||||
// are permitted provided that the following conditions are met:
|
||||
//
|
||||
// * Redistribution's of source code must retain the above copyright notice,
|
||||
// this list of conditions and the following disclaimer.
|
||||
//
|
||||
// * Redistribution's in binary form must reproduce the above copyright notice,
|
||||
// this list of conditions and the following disclaimer in the documentation
|
||||
// and/or other materials provided with the distribution.
|
||||
//
|
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// * The name of the copyright holders may not be used to endorse or promote products
|
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// derived from this software without specific prior written permission.
|
||||
//
|
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// This software is provided by the copyright holders and contributors "as is" and
|
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// any express or implied warranties, including, but not limited to, the implied
|
||||
// warranties of merchantability and fitness for a particular purpose are disclaimed.
|
||||
// In no event shall the Intel Corporation or contributors be liable for any direct,
|
||||
// indirect, incidental, special, exemplary, or consequential damages
|
||||
// (including, but not limited to, procurement of substitute goods or services;
|
||||
// loss of use, data, or profits; or business interruption) however caused
|
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// and on any theory of liability, whether in contract, strict liability,
|
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// or tort (including negligence or otherwise) arising in any way out of
|
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// the use of this software, even if advised of the possibility of such damage.
|
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//
|
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//M*/
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#include "precomp.hpp" |
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namespace cv { namespace hal { |
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static const uchar popCountTable[] = |
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{ |
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0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, |
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1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, |
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1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, |
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2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, |
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1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, |
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2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, |
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2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, |
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3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 |
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}; |
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|
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static const uchar popCountTable2[] = |
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{ |
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0, 1, 1, 1, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, |
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1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, |
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1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, |
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2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, |
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1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, |
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2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, |
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1, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, |
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2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 2, 3, 3, 3, 3, 4, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4 |
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}; |
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|
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static const uchar popCountTable4[] = |
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{ |
||||
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, |
||||
1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2 |
||||
}; |
||||
|
||||
Error::Code normHamming(const uchar* a, int n, int & result) |
||||
{ |
||||
int i = 0; |
||||
result = 0; |
||||
#if CV_NEON |
||||
{ |
||||
uint32x4_t bits = vmovq_n_u32(0); |
||||
for (; i <= n - 16; i += 16) { |
||||
uint8x16_t A_vec = vld1q_u8 (a + i); |
||||
uint8x16_t bitsSet = vcntq_u8 (A_vec); |
||||
uint16x8_t bitSet8 = vpaddlq_u8 (bitsSet); |
||||
uint32x4_t bitSet4 = vpaddlq_u16 (bitSet8); |
||||
bits = vaddq_u32(bits, bitSet4); |
||||
} |
||||
uint64x2_t bitSet2 = vpaddlq_u32 (bits); |
||||
result = vgetq_lane_s32 (vreinterpretq_s32_u64(bitSet2),0); |
||||
result += vgetq_lane_s32 (vreinterpretq_s32_u64(bitSet2),2); |
||||
} |
||||
#endif |
||||
for( ; i <= n - 4; i += 4 ) |
||||
result += popCountTable[a[i]] + popCountTable[a[i+1]] + |
||||
popCountTable[a[i+2]] + popCountTable[a[i+3]]; |
||||
for( ; i < n; i++ ) |
||||
result += popCountTable[a[i]]; |
||||
return Error::Ok; |
||||
} |
||||
|
||||
Error::Code normHamming(const uchar* a, const uchar* b, int n, int & result) |
||||
{ |
||||
int i = 0; |
||||
result = 0; |
||||
#if CV_NEON |
||||
{ |
||||
uint32x4_t bits = vmovq_n_u32(0); |
||||
for (; i <= n - 16; i += 16) { |
||||
uint8x16_t A_vec = vld1q_u8 (a + i); |
||||
uint8x16_t B_vec = vld1q_u8 (b + i); |
||||
uint8x16_t AxorB = veorq_u8 (A_vec, B_vec); |
||||
uint8x16_t bitsSet = vcntq_u8 (AxorB); |
||||
uint16x8_t bitSet8 = vpaddlq_u8 (bitsSet); |
||||
uint32x4_t bitSet4 = vpaddlq_u16 (bitSet8); |
||||
bits = vaddq_u32(bits, bitSet4); |
||||
} |
||||
uint64x2_t bitSet2 = vpaddlq_u32 (bits); |
||||
result = vgetq_lane_s32 (vreinterpretq_s32_u64(bitSet2),0); |
||||
result += vgetq_lane_s32 (vreinterpretq_s32_u64(bitSet2),2); |
||||
} |
||||
#endif |
||||
for( ; i <= n - 4; i += 4 ) |
||||
result += popCountTable[a[i] ^ b[i]] + popCountTable[a[i+1] ^ b[i+1]] + |
||||
popCountTable[a[i+2] ^ b[i+2]] + popCountTable[a[i+3] ^ b[i+3]]; |
||||
for( ; i < n; i++ ) |
||||
result += popCountTable[a[i] ^ b[i]]; |
||||
return Error::Ok; |
||||
} |
||||
|
||||
Error::Code normHamming(const uchar* a, int n, int cellSize, int & result) |
||||
{ |
||||
if( cellSize == 1 ) |
||||
return normHamming(a, n, result); |
||||
const uchar* tab = 0; |
||||
if( cellSize == 2 ) |
||||
tab = popCountTable2; |
||||
else if( cellSize == 4 ) |
||||
tab = popCountTable4; |
||||
else |
||||
return Error::Unknown; |
||||
int i = 0; |
||||
result = 0; |
||||
#if CV_ENABLE_UNROLLED |
||||
for( ; i <= n - 4; i += 4 ) |
||||
result += tab[a[i]] + tab[a[i+1]] + tab[a[i+2]] + tab[a[i+3]]; |
||||
#endif |
||||
for( ; i < n; i++ ) |
||||
result += tab[a[i]]; |
||||
return Error::Ok; |
||||
} |
||||
|
||||
Error::Code normHamming(const uchar* a, const uchar* b, int n, int cellSize, int & result) |
||||
{ |
||||
if( cellSize == 1 ) |
||||
return normHamming(a, b, n, result); |
||||
const uchar* tab = 0; |
||||
if( cellSize == 2 ) |
||||
tab = popCountTable2; |
||||
else if( cellSize == 4 ) |
||||
tab = popCountTable4; |
||||
else |
||||
return Error::Unknown; |
||||
int i = 0; |
||||
result = 0; |
||||
#if CV_ENABLE_UNROLLED |
||||
for( ; i <= n - 4; i += 4 ) |
||||
result += tab[a[i] ^ b[i]] + tab[a[i+1] ^ b[i+1]] + |
||||
tab[a[i+2] ^ b[i+2]] + tab[a[i+3] ^ b[i+3]]; |
||||
#endif |
||||
for( ; i < n; i++ ) |
||||
result += tab[a[i] ^ b[i]]; |
||||
return Error::Ok; |
||||
} |
||||
|
||||
}} //cv::hal
|
||||
@ -0,0 +1,2 @@ |
||||
|
||||
#include "opencv2/hal.hpp" |
||||
Loading…
Reference in new issue