Matlab 2013a 和 VS2010 混合编程

最近由于项目需求，某项目的算法是基于MATLAB完成的，在短时间内需要去调用算法功能。因此，基于MATLAB生成DLL, C 调用的方式完成。

环境：MATLAB 2013a + VS2010 + win8.1 + 64位系统

一、MATLAB 编译环境设置

1. 安装，MATLAB安装时选择 force 32bit, 这样生成的dll在32位和64位的机器上都可以调用。

2. 装好MATLAB 2013后，打开软件，进行配置

>> mex -setup
Welcome to mex -setup. This utility will help you set up 
a default compiler. For a list of supported compilers, see 
http://www.mathworks.com/support/compilers/R2013a/win32.html 
Please choose your compiler for building MEX-files: 
Would you like mex to locate installed compilers [y]/n?y
Select a compiler: 
[1] Lcc-win32 C 2.4.1 in D:PROGRA~2MATLABR2013asyslcc 
[2] Microsoft Visual C++ 2010 in D:Program Files (x86)Microsoft Visual Studio 10.0 

[0] None 

Compiler: 2

Please verify your choices: 

Compiler: Microsoft Visual C++ 2010 
Location: D:Program Files (x86)Microsoft Visual Studio 10.0 

Are these correct [y]/n? y

*************************************************************************** 
Warning: MEX-files generated using Microsoft Visual C++ 2010 require 
that Microsoft Visual Studio 2010 run-time libraries be 
available on the computer they are run on. 
If you plan to redistribute your MEX-files to other MATLAB 
users, be sure that they have the run-time libraries. 
*************************************************************************** 


Trying to update options file: C:Users
obinAppDataRoamingMathWorksMATLABR2013amexopts.bat 
From template: D:PROGRA~2MATLABR2013ainwin32mexoptsmsvc100opts.bat 

Done . . . 

显示 Done 后执行下一步

>> mbuild -setup
 
Welcome to mbuild -setup.  This utility will help you set up  
a default compiler.  For a list of supported compilers, see  
http://www.mathworks.com/support/compilers/R2013a/win32.html 
 
Please choose your compiler for building shared libraries or COM components: 
 
Would you like mbuild to locate installed compilers [y]/n? y
 
Select a compiler: 
[1] Microsoft Visual C++ 2010 in D:Program Files (x86)Microsoft Visual Studio 10.0 
 
[0] None 
 
Compiler: 1
 
Please verify your choices: 
 
Compiler: Microsoft Visual C++ 2010  
Location: D:Program Files (x86)Microsoft Visual Studio 10.0 
 
Are these correct [y]/n? y
 
**************************************************************************** 
  Warning: Applications/components generated using Microsoft Visual C++      
           2010 require that the Microsoft Visual Studio 2010 run-time       
           libraries be available on the computer used for deployment.       
           To redistribute your applications/components, be sure that the    
           deployment machine has these run-time libraries.                  
**************************************************************************** 
 
 
Trying to update options file: C:Users
obinAppDataRoamingMathWorksMATLABR2013acompopts.bat 
From template:              D:PROGRA~2MATLABR2013ainwin32mbuildoptsmsvc100compp.bat 
 
Done . . . 

这样，MATLAB的Mex编译环境就配置好了。

二、MATLAB 代码编译dll

打开MATLAB源代码，找到最顶层的m文件，注意顶层必须为function方式。

例如，MATLAB的顶层函数为 

文件 ship_track1.m

function finish_flag = ship_track1(input_x,input_y,num_ori)

为某目标检测算法，input_x ,input_y,和num_ori为输入的3个参数

那么编译的指令为

>> mcc -W cpplib:libship_track1 -T link:lib ship_track1.m -C

配置完成后会在MATLAB工程目录生成7个文件

1 libship_track1.cpp
2 libship_track1.ctf
3 libship_track1.dll
4 libship_track1.exp
5 libship_track1.exports
6 libship_track1.h
7 libship_track1.lib

当然我们需要用到的只有4个

libship_track1.ctf
libship_track1.dll
libship_track1.h
libship_track1.lib

三、VS2010 MFC 工程配置

1. 新建VS2010 MFC 工程

2. 将第二步MATLAB编译生成的4个文件拷贝入MFC工程目录下

将头文件 libship_track1.h 添加进工程

3. 项目属性设置

1）选择项目->项目属性->所有配置

C/C++ -> 常规->附加包含目录，找到MATLAB下的include目录

D:Program Files (x86)MATLABR2013aexterninclude

（根据MATLAB的安装路径确定）

2）链接器->常规->附加库目录

D:Program Files (x86)MATLABR2013aexternlibwin32microsoft

3) 链接器->输入->附加依赖项

libship_track1.lib
libship_track2.lib
mclmcrrt.lib
libmx.lib
libmat.lib
mclmcr.lib

到此就配置完成。

四、MFC 调用DLL

1. 初始化

if(!libship_track1Initialize())    //初始化1通道
{
      //MessageBox(_T("could not initialize the application"));
}

2. 传递参数

double _Data1_1[5] = {0};                //输入数组
double _Data1_2[5] = {0};
for(int i=0; i< chn1_num; i++)
{
    _Data1_1[i] = Chan1_x[i];
    _Data1_2[i] = Chan1_y[i];
}

mxArray* Data1_1 = mxCreateDoubleMatrix(1, 5,mxREAL);     //创建1*5矩阵
memcpy(mxGetPr(Data1_1), (void*)_Data1_1,sizeof(_Data1_1));           //拷贝输入数据
mxArray* Data1_2 = mxCreateDoubleMatrix(1, 5,mxREAL);     //创建1*5矩阵
memcpy(mxGetPr(Data1_2), (void*)_Data1_2,sizeof(_Data1_2));           //拷贝输入数据
double _Data1_3[1];
_Data1_3[0] = chn1_num;
mxArray* Data1_3 = mxCreateDoubleMatrix(1, 1,mxREAL);     //创建1*1矩阵;
memcpy(mxGetPr(Data1_3), (void*)_Data1_3,sizeof(_Data1_3));           //拷贝输入数据
mxArray *input1[3] = {Data1_1,Data1_2,Data1_3};                               //将矩阵x的指针作为输入参数传递进去
//mxArray *output[1];                        //定义输出参数指针
mlxShip_track1(0,NULL, 3, input1);

mxArray是Matlab C 函数库的结构体，需要利用它来进行参数传递。

对于mlxShip_track1函数来说，其四个参数分别对应：

mlxShip_track1（输出参数个数、输出参数、输入参数个数、输入参数）