What is the story with this new ICameraControl interface? It looks a
duplicate of IAMCameraControl, except that instead of using 3 methods, it uses 51.
Is there some benefit to using ICameraControl over
IAMCameraControl?
ICameraControl is node-based. For a description of nodes in kernel-streaming filters, see:
http://msdn.microsoft.com/library/en-us/directshow/htm/ikstopologyinfointerface.asp
The IKsTopologyInfo interface lets you enumerate the nodes inside the filter. If the node type is KSNODETYPE_VIDEO_CAMERA_TERMINAL, the node supports ICameraControl. This is mainly for UVC devices. - There is some information here:
http://msdn.microsoft.com/library/en-us/directshow/htm/workingwithusbdvvideodevices.asp
For devices that don't support IKsTopologyInfo, the app should continue to use IAMCameraControl from the filter.
-
Mike Wasson, DirectShow SDK Documentation
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