Hello Windows-Gurus,
I have some queries related to WIA (Windows Image Acquisition). I am trying
to understand
the development of a WIA mini-driver for a camera/scanner device using
1394/USB kernel mode WDM stack as a mode of communication.
Question:
The WIA service is responsible for loading the WIA Minidriver for a
particular device(on
discovering the presence of that device on the bus). How does the WIA
service decide to load the
corresponding WIA minidriver(supposing that i have two WIA minidrivers one
each for 1394 stack
and another for USB stack). Does it interact with the kernel mode I/O
manager which understands
the 1394/USB stacks (so that it knows which device (1394/USB) is connected).
some pointers on
this would be greatly appreciated. Is it related to specifying some things
on INF files for the
WIA devices?
Question:
the next question is when the WIA service loads the minidriver. does it load
it in conjunction
with the kernel mode drivers(the WDM function drivers for the
camera/scanner) when the
camera/scanner device is detected ???
It is to be observed that the WIA service is a user mode component
interacting with WIA
minidriver through COM.
Eagerly and patiently awaiting for a reply,
I am ready to share more details if somebody could help me,
Regards
Venky
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