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From: hgoldstand on 28 Sep 2006 10:48
I cannot access UVC extension units using DirectShow
IKsControl::KsProperty. When I try doing KSPROPERTY_TYPE_GET |
KSPROPERTY_TYPE_TOPOLOGY on PropertyId 0, I get back the extension
unit GUID and seven additional bytes (1,1,3,2,1,0,6) which do not seem
to be defined in the DDK. PropertyId 1 returns error 0x80070490.

Has anyone been successful accessing extension unit properties with
DirectShow or WDK?

From: tiyayin on 28 Sep 2006 22:00


"hgoldstand" wrote:

> I cannot access UVC extension units using DirectShow
> IKsControl::KsProperty. When I try doing KSPROPERTY_TYPE_GET |
> KSPROPERTY_TYPE_TOPOLOGY on PropertyId 0, I get back the extension
> unit GUID and seven additional bytes (1,1,3,2,1,0,6) which do not seem
> to be defined in the DDK. PropertyId 1 returns error 0x80070490.
>
> Has anyone been successful accessing extension unit properties with
> DirectShow or WDK?
>
>
dear hgoldstand

How do you to let Plug-in DLL be complied sucess??

If I don't to use microsoft 's extension unit sample control, and just to
query the "IKsControl " interface that can be find. But, when I issue
Property command to our device it also return error code "0x80070490"
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