[wdmaudiodev] Re: Register different APOs in inf for endpoints with the same KSNODETYPE
- From: "Cheng-mean Liu (SOCCER)" <soccerl@xxxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Tue, 13 Jul 2010 17:07:07 +0000
Hi Angela:
Unfortunately, this is a limitation that 's caused by the fact that the mapping
between an endpoint and FX is by KSNodeType.
In your case, you might want to consider applying the same APO to both
endpoints in the INF and adding some logics inside the APO to distinguish those
two endpoints (render and capture) before deciding what actual APO to use.
Thanks
Cheng-mean
From: wdmaudiodev-bounce@xxxxxxxxxxxxx
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Yan Yan
Sent: Tuesday, July 13, 2010 2:11 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Register different APOs in inf for endpoints with the
same KSNODETYPE
Hi All,
Greetings.
I have a USB audio device that exposes a line-in terminal and line-out
terminal. This will end up as a filter with a line-in endpoint and a line-out
endpoint on MS USB audio driver. I need to register different APOs and some
other information to the line-in and line-out endpoint.
I did some experiment in both Vista and Win 7, it seems that the only place
that I can make my FX\\ and EP\\ information go into the property store is to
put the infomation in the following place in the inf:
AddInterface=%KSCATEGORY_AUDIO%,%KSNAME_DeviceA%, DeviceA.RegisterAPO
However, since there is only 1 KSNODETYPE: KSNODETYPE_LINE_CONNECTOR for both
line-in and line-out, there is no way to separate the APO information for both
endpoints in this case.
If I try to register APO while the render and capture interfaces are getting
register :
AddInterface=%KSCATEGORY_RENDER%,%KSNAME_DeviceA%, DeviceA.RegisterAPORender
AddInterface=%KSCATEGORY_CAPTURE%,%KSNAME_DeviceA%,
DeviceA.RegisterAPOCapture
The FX\\ and EP\\ information in my inf will never go into the OS. In Vista,
the whole "FxProperty" key is not shown in registry. In Win7, it shows MS APO
information in FxProperty key.
Anyone knows how to do this in inf?
Any help wil be greatly appreciated.
Regards,
Angela
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