编译带有OpenCL的OpenCVForAndroid

最新推荐文章于 2025-05-28 20:08:36 发布

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最新推荐文章于 2025-05-28 20:08:36 发布 · 3.6k 阅读

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#opencl #opencv

本文指导如何在Windows环境下，利用cmake 3.1.0和opencv 3.1.0源码，编译支持OpenCL的OpenCV for Android。涉及修改CMakeLists.txt文件启用OpenCL支持，调整opencl_core.cpp源码，设置ANDROID_NDK环境变量，选择合适的Android API级别和ABI，以及执行编译命令。

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本文参考链接http://www.cnblogs.com/hrlnw/p/4720977.html

1. 本机配置

windows7 64为
cmake 版本 3.1.0
opencv版本 3.1.0

2. 基本步骤

1) 下载opencv3.1.0 官方源码 https://github.com/Itseez/opencv/archive/3.1.0.zip
2) 下载cmake
3) 修改opencv根目录下的CMakeLists.txt，修改WITH_OPENCL

OCV_OPTION(WITH_OPENCL         "Include OpenCL Runtime support"              ON )

4) 修改opencl的文件使之支持android ：在\modules\core\src\opencl\runtime\opencl_core.cpp文件修改为

/*M///////////////////////////////////////////////////////////////////////////////////////
//
//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
//  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
//
// Copyright (C) 2010-2013, Advanced Micro Devices, Inc., all rights reserved.
// Third party copyrights are property of their respective owners.
//
// 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.
//
//   * The name of the copyright holders may not be used to endorse or promote products
//     derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// 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 OpenCV Foundation 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
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
// the use of this software, even if advised of the possibility of such damage.
//
//M*/

#include "../../precomp.hpp"

#if defined(HAVE_OPENCL) && !defined(HAVE_OPENCL_STATIC)

#include "opencv2/core.hpp" // CV_Error

#include "opencv2/core/opencl/runtime/opencl_core.hpp"

#define OPENCL_FUNC_TO_CHECK_1_1 "clEnqueueReadBufferRect"
#define ERROR_MSG_CANT_LOAD "Failed to load OpenCL runtime\n"
#define ERROR_MSG_INVALID_VERSION "Failed to load OpenCL runtime (expected version 1.1+)\n"

#if defined(__APPLE__)
#include <dlfcn.h>

static void* AppleCLGetProcAddress(const char* name)
{
    static bool initialized = false;
    static void* handle = NULL;
    if (!handle)
    {
        if(!initialized)
        {
            initialized = true;
            const char* path = "/System/Library/Frameworks/OpenCL.framework/Versions/Current/OpenCL";
            const char* envPath = getenv("OPENCV_OPENCL_RUNTIME");
            if (envPath)
                path = envPath;
            handle = dlopen(oclpath, RTLD_LAZY | RTLD_GLOBAL);
            if (handle == NULL)
            {
                if (envPath)
                    fprintf(stderr, ERROR_MSG_CANT_LOAD);
            }
            else if (dlsym(handle, OPENCL_FUNC_TO_