[wdmaudiodev] Re: AVStream driver as a both Capture and Renderer Filter

  • From: DJ Sisolak <dsisolak@xxxxxxxxxxxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 13 Jan 2009 17:40:29 -0800

>> "There is certainly one very big problem with this topology:  a single 
>> filter cannot be both a source (capturer) and a sink (renderer). "

This is not true. The driver can have both a render and capture pin on a single 
filter. (This is how the USB Audio class driver works.). As to why this is not 
working, I am not sure. I would need more info on the topology. KsStudio.exe 
may be your friend here if you have the WDK.

DJ


From: wdmaudiodev-bounce@xxxxxxxxxxxxx 
[mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] On Behalf Of Tim Roberts
Sent: Tuesday, January 13, 2009 9:39 AM
To: wdmaudiodev@xxxxxxxxxxxxx
Subject: [wdmaudiodev] Re: AVStream driver as a both Capture and Renderer Filter

swapnil kamble wrote:

                     I am having problems in designing topology for my driver. 
I have developed Capture/Renderer filter with following topology works 
perfectly fine for me.
...
But when I combine both of them and make topology as,

Why are you trying to combine then?



I assume here that my pin 0 will become capture pin and pin 2 will become 
renderer pin. Is there anything mismatching between my assumption and my 
topology ?

There is certainly one very big problem with this topology:  a single filter 
cannot be both a source (capturer) and a sink (renderer).  Are you trying to 
make a transform filter?


--

Tim Roberts, timr@xxxxxxxxx<mailto:timr@xxxxxxxxx>

Providenza & Boekelheide, Inc.

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