[wdmaudiodev] Re: Hardware acceleration format
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Mon, 09 Nov 2009 14:01:05 -0800
NCH Obble Smith wrote:
> In case anyone was thinking, the format being played isn't in a DATA
> INTERCEPT or DAtaRange return values either. I can see the value
> being played on the stack when the function KsCreatePin is called, but
> I dont know how to get to that structure unless I walk the stack. It
> must be provided somehow / somewhere on the IRP_MJ_Create.
>
> Does any one know of the documentation of IRP_MJ_Create when it comes
> to audio stuff like creating pins?
Whatever you got is just an accident. There is nothing in the
IRP_MJ_CREATE request that provides for out-of-band information like
this. You have to watch the property stream. That's the only way to
get this data.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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