[wdmaudiodev] Re: SONAR and KS mode
- From: "Neetu Sand" <neetu.freelist@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 23 Jul 2008 01:34:27 +0530
Hi Eugene,
Thanks for a quick reply. This makes sense. So in order to make the driver
work with both applications (SONAR and Media player) simultaneously, I will
need to allow multiple instances of the driver to be opened. On top of that,
I will have to mix two streams (SONAR and media player) in the driver before
sending it on the bus, right?
Thanks, Neetu.
On Tue, Jul 22, 2008 at 10:11 PM, Eugene Muzychenko <emuzychenko@xxxxxxxxx>
wrote:
> Hello Neetu,
>
> > I am seeing that if SONAR is playing audio in KS mode with our driver
> then I
> > am not able to stream data from Media player. It shows an error.
>
> Most likely the driver allows only a single pin instance. When an
> application (SONAR) creates a pin instance, Windows audio subsystem is
> unable to create another instance for its needs. All MME (WaveOut) and
> DirectSound software buffers playback from all applications go via Windows
> audio stack and
> require only a single pin instance because of software
> mixing/conversion. Only KS applications can compete with Windows audio
> stack, acquiring pin instances directly.
>
> Regards,
> Eugene
>
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