Forums - How to reference FastCV in C# WP8 Project

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How to reference FastCV in C# WP8 Project
Franva
Join Date: 3 Mar 14
Posts: 9
Posted: Wed, 2014-03-05 08:22
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Update 1:
 
I am wondering whether I can reference to a .lib file, but it seems that I cannot. If this is true, and I have no source code of the C++ project, How can I use its methods? Btw, I'm using FastCV library.
 
I come across a situation that I need to call C++ methods from C# code. The C++ generated files structure:
 
 lib
 --libfastcv.lib
 --vc120.pdb inc
 --fastcv.h
 --fastcv.inl
 --stdint.h
I know how to call C++ methods from C# :
 
[DllImport("libfastcv.lib",CallingConvention=CallingConvention.Cdecl)]
public static extern <ReturnType> <MethodName>(<Parameters>);
But I think the .h and .inl files need to be included in my C# project as well. So how to include them?
 
Thank you very much.
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Re: How to reference FastCV in C# WP8 Project
krishanu6690
Join Date: 24 Nov 13
Posts: 10
Posted: Mon, 2014-03-10 00:52
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1.  Create a  C++ header file:   fastcv_c#.h
    This file contents will look something like this:
    #include "fastcv\fastcv.h"
    //<fastcv headers>
   
    namespace fastcv_c#
    {
            puclic ref class FASTCV_c#
            {
                 public :
                 <constructor declarations>;
                 <API declarations>;
            }
    }
    Please include the proper path to <fastcv headers > and <fastcv lib> in the properties option of Visual Studio
2.  Create a C++ source file containing the API definitions.
3.  Refer this C# project :For instance:
     using fastcv_c#;
         

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Re: How to reference FastCV in C# WP8 Project
Franva
Join Date: 3 Mar 14
Posts: 9
Posted: Mon, 2014-03-10 04:11
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Hi Krishanu,

 

Thank you very much for your help.

 

I will follow your instruction and give a try, and keep you posted.

 

Btw, I just wonder why QualComm doesn't provide C# Dlls directly to save our time and efforts. I will gradful if they could do so.

 

Cheers,

Winston

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Re: How to reference FastCV in C# WP8 Project
Franva
Join Date: 3 Mar 14
Posts: 9
Posted: Sat, 2014-03-15 06:37
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Hi krishanu6690,

 

Thank you very much for your reply.

 

Now, I just back to my home and found that I do not know how to write the constructor declarations and API declarations.

I want to detect faces. So I am gratefull if you could give an example of the header file?

I am looking forward to your reply.

 

Best regards,

 

Franva

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Re: How to reference FastCV in C# WP8 Project
Franva
Join Date: 3 Mar 14
Posts: 9
Posted: Sat, 2014-03-15 06:58
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Hi 

Sorry for asking so many questions, but here is another one.

 

The 2nd step you mentioned : Create a C++ source file containing the API definitions.

What does the C++ source file containing the API definitions look like?

 

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Re: How to reference FastCV in C# WP8 Project
Franva
Join Date: 3 Mar 14
Posts: 9
Posted: Sat, 2014-03-15 07:09
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Hi krishanu6690,

 

After seeking face detection methods in the fastcv.h for several minutes, I just cannot find any.

I highly appreciate that if you could write me a small but completely example which contains the .h file, C++ file and C# files in a C# Windows Phone 8 project.

 

Thank you again.

 

Best regards,

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