At Fri, 30 Nov 2001 15:46:08 +0100 (CET),
Jaroslav Kysela wrote:
> 
> On Fri, 30 Nov 2001, Takashi Iwai wrote:
> 
> > At Fri, 30 Nov 2001 12:09:13 +0100,
> > Jose Soler wrote:
> > >
> > > Hi everybody,
> > >
> > > I installed my SB awe 32 sound card and the alsa drivers. It is playing
> > > properly and without problems wavs, mp3s, midis.
> > >
> > > I would like to use it with a videotelephony application but it is giving me
> > > some errors. So I need some hints on using the mixer and enabling full
> > > duplex capability.
> > > Can anyone give me a piece on advice on:
> > >
> > > how to use amixer to enable recording channel and fullduplex capability?
> >
> > SB16/SBAWE cards have only limited duplex support.  You cannot use
> > 16bit for both playback and capture at the same time.
> > I guess your videotelephony app requires this - the same format for
> > playback and capture.  If so, sorry, no way.
> 
> The conversion code exists for the OSS emulation and alsa-lib. So, the
> applications shouldn't be affected (if it is not using mmap).

Oh, yes, of course..  Sorry, forgot to mention this.

I guess the case above uses mmap, though.
I've heard problems on some drivers sometime regarding such
applications.


Takashi

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