[wdmaudiodev] Re: DS Audio Filters on WDM driver

  • From: Steve Thorpe <steve@xxxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Sat, 9 Jul 2005 18:33:13 -0700 (PDT)

Thanks for the reply.

How do I set the "time discontinuity flag"? 

Steve T


--- Nick Gorohov <engkosha2001@xxxxxxxxx> wrote:

> Hello, Steve!
> 
> Generally saying, your design must be improved.
> The problem appears in DShow, because default Clock
> for the Capture Graph
> is from the AudioRenderer. Many capturing
> applications are building their own 
> Capturing graph (like Microsoft MovieMaker or Sonic
> DVDIt!) and they do
> more sophisticated Clock control. 
> 
> Without going too deep into details, you may fix
> that problem in a two ways: 
> 
> 1) (complicated) add a Clock to your WDM, usually
> Filter Graph Manager
>    prefers Source Clock to AudioRenderer Clock.
> 2) (simple) set periodically fake breaks in your
> stream -- i.e. set
> Time Discontinuity Flag "on" every 5-9 minutes. This
> will force Filter
> Graph manager to keep better sync between all
> streams.
> 
> Nick Gorokhov
> Audio/Video Engineer
> Sonic Solutions, Inc.
> 
> 
> 
> 
> 
>               
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