[wdmaudiodev] Re: SONAR and KS mode
- From: "Neetu Sand" <neetu.freelist@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 23 Jul 2008 01:35:57 +0530
My emaail needs some corrections:
"Multiple instances of *pin (instead of driver) *to be opened."
On Wed, Jul 23, 2008 at 1:34 AM, Neetu Sand <neetu.freelist@xxxxxxxxx>
wrote:
> 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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>
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