[wdmaudiodev] Re: IntersectHandler handler doesn't affect Sound->LineOut Properties->Advanced->Default Format drop down

  • From: Matthew van Eerde <Matthew.van.Eerde@xxxxxxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 28 May 2014 16:51:59 +0000

The list is created when the endpoint is first built, but formats will only 
show up there if the driver succeeded a format negotiation for that format (via 
the “set proposed format” property, or via a data range intersection.)

You can repro the issue by:

1.       Uninstall the device

2.       net stop audioendpointbuilder

3.       Reinstall the device

4.       Set breakpoints on your format negotiation entry points

5.       Net start audioendpointbuilder

If that doesn’t do it, play a test tone.

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