lkml.org 
[lkml]   [1999]   [Dec]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Number of sound channels?
On Fri, Dec 10, 1999 at 02:04:36AM +0000, Alan Cox wrote:
> > This is kind of an unrelated question. Has anyone ever
> > implemented software mixing such that /dev/dsp can be opened
> > for output multiple times? Or is that functionality going
> > to remain strictly the domain of esd?
> The commercial OSS did. We regard it as the wrong answer.

Care to elaborate why? Or are you only referring to when the driver is
attempting s/w mixing.

> Esd is one approach although esd itself is currently very very limited
> in its facilities. For example many of my sound cards have 6 or 8
> channels, but esd only knows how to use one and always software mix
> for it. Needless to say this isnt ideal

I'd have thought you'd want to be able to open the soundcard as many
times as you want and 'grab' a subset of the available channels.

The only other approach would be to allow one open, export all channels,
and then have a super-esd that subsequently re-exports to apps.

DF
--
Derek Fawcus derek@spider.com
Spider Software Ltd. +44 (0) 131 475 7034
PGP/GnuPG Keys available

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 13:55    [from the cache]
©2003-2011 Jasper Spaans