APIs for scanner and webcam still image capture

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I am coding unmanaged C++ with VS2005.

 

Short version of this question. I need to capture still images from webcam and scanner on XP, Vista,*Win Server 2003, and eventually Server 2008. Should I use:

*WIA (scanner and webcam)

*TWAIN*(scanner and I guess some webcams too)

*DirectShow (webcam)

*Windows Media Device Manager (?)

*Windows Media Foundation (?)

*Windows Portable Devices (?)

 

Long version:

 

I already coded the Windows Imaging Acquisition API to integrate scanner and webcam still image capture. This worked great on Windows XP. But I also need it to work on Windows Server 2003 Terminal Server with connection back to the Windows XP desktop's webcam/scanner. For this I have been researching a USB over IP solutions from Fabulatech and it works pretty good except now I find my testing HP scanner, Casio scanner, Microsoft webcam, and Logitech*webcam do not have Win Server 2003 drivers, which apparently is a common issue on Win Server 2003 which means it will be a problem for my customers.

 

It looks like our Microsoft and Logitech webcams we are using for testing do work using*a DirectShow interface on Win Server 2003 connected to the Windows XP installed webcam using USB over IP.

 

I think that some scanners may work using TWAIN over this USB over IP solution.

 

So what should I be using?

 

I thought that WIA was the future but now it seems like Windows Portable Devices API is the latest and greatest thing.

 

I cannot find any clear story on this.

 

Thanks.

 

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