Re: [linux-audio-user] Re: [Alsa-devel] Re: Soundcard supporting several audio streams

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Subject: Re: [linux-audio-user] Re: [Alsa-devel] Re: Soundcard supporting several audio streams
From: Stefan Schwandter (stefan.schwandter_AT_web.de)
Date: Thu Nov 08 2001 - 12:55:09 EET


On Thu, Nov 08, 2001 at 03:27:30AM -0600, dave willis wrote:

> > Or, to be specific, does the Audiophile 2496 support it?

> i have this card, and as i posted on lau, it does not support multi open.
> but my ymf744b card does. if you "cat /proc/asound/card?/pcm?p/info" you
> can see how many h/w playback streams you have by looking at
> subdevices_count. subdevices_count = 1 on the audiophile (ice1712), and
> 32 on the main pcm of the ymf744b.

So is this really the only driver that supports multiple output streams?

> someone has the idea that alsa can mix streams if ~/.asoundrc is
> configured in a certain way (oss has this feature), but that will
> probably cause performance problems if even possible. and that doesn't
> seem much different than artsd or esd, which is what i think you want to
> avoid.

Yeah, you're right :-) It would be more transparent for applications,
though (they wouldn't need to have special esd- or arts-support).

regards, Stefan


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