[wdmaudiodev] Re: Device enumeration and filtering.
- From: Robert Bielik <robert.bielik@xxxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Mon, 23 May 2011 07:01:08 +0200
Anton Shpakovsky skrev 2011-05-23 06:07:
Hi,
I have a virtual audio microphone based on MSVAD.
I use DirectShow to enumerate devices and I want to exlude my driver from the
list.
I do not think that FriendlyName from PropertyBag is a good way for filtering,
so I started to look for more precise way of doing filtering.
AFAIK, FriendlyName will be different with different system languages, so my
question is - how can I get unique device identifier while enumerating with
DShow for not to show my microphone along with other mic devices on the list?
During the enumeration, you can ask each filter for the Component ID (which is
handled in MSVAD by CMiniportWaveCyclic::PropertyHandlerComponentId), via
KSPROPSETID_General/KSPROPERTY_GENERAL_COMPONENTID/KSPROPERTY_TYPE_GET which
returns a GUID.
In MSVAD its defined as PID_MSVAD, so you'll just have to make sure it is
unique.
Regards,
/Rob
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