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Date: Sun, 30 Dec 2001 15:36:14 +0100
From: Lionel Bouton <Lionel.Bouton@free.fr>
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To: rdicaire@ardynet.com
Cc: Linux <linux-kernel@vger.kernel.org>
Subject: Re: AWE64 Duplex not working with 2.4.17
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rdicaire@ardynet.com wrote:

> I have installed an SB AWE 64, kernel is 2.4.17, audio works fine, but I
> cannot play
> simultaneous multpile wav or mp3 files, errors reported that something
> else has the device open already.
> 


This is an hardware limitation. AWE series don't support multiple PCM 
streams.
So mixing multiple PCM streams must be done in software. Use either esd, 
artsd, ...

You could imagine a driver based software mixing but :
- it would make drivers far more complex -> more bug-prone,
- it may pose performance/feasability problems when your apps need 
accurate timings (Video/audio sync for example).

LB.

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