[wdmaudiodev] Re: AVStream Renderer

  • From: Waldemar Haszlakiewicz <waldemar.haszlakiewicz@xxxxxxxx>
  • To: "John D. Farmer" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Tue, 23 Mar 2004 10:24:50 +0100

There is a flag that you have to set in pin struct -> KSPIN_FLAG_RENDERER,
but there may be other things too -> like KSPIN_DATAFLOW_IN and

Anyway read about the flags in DDK and define them correctly.
Another thing recheck every struct 3 times that everything is correct.


JDF> I am trying to create a AVStream Minidriver Audio Renderer.  I have based 
what I have so far
off of the AVSSAMP sample from the DDK, I have taken out most of the video 
stuff and implemented the
audio stuff.  The problem I am having is that I can't seem to setup the audio 
pin as a rendering
pin.  I want to have it show up as a Audio Renderer in GraphEdit instead of a 
WDM Streaming Capture
Device that it currently shows up as.  I've looked at the MSVAD sample, and its 
helped some, but I
cannot seem to divine its secrets from the code or its INF.  I know that MSVAD 
is a PortCls driver,
but it seems to be the only example I can find that actually shows up in the 
Audio Renderers
category in MSVAD.  I've tried different Categories Types, Node Types, Pin 
Types, and Topology
Types.  I am rather confused as to what makes a renderer a renderer.  Could 
someone please enlighten

JDF> Any help would be appreciated.

JDF> John Farmer


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