[plug] RE: Alsa problems

[Michael Collard]

On Tue, 2004-12-07 at 11:41 +0400, Brad Campbell wrote:
> Michael Collard wrote:
> > 
> > You will probably find that you're using dmix (software mixing) and that
> > its nothing to do with the driver. For example, rename the ~/.asoundrc
> > and /etc/asound.conf then try and make 3 alsa apps play at same time
> > without specifying the dmix mixer, I doubt it will work.
> 
> I don't use the alsa interface for my apps. They all use the oss compat interface.
> I installed all my alsa drivers by hand and I wrote the playback apps myself using the oss interface.
> I don't have an /etc/asound.conf or ~/.asoundrc
> 
> It is most likely being done in the oss compat driver. I'll have a look at the code when I get the 
> chance.

I am almost certain that the OSS device (/dev/dsp etc) will only allow
one application to use it at a time, regardless of ALSA. I got that from
the docs somewhere. Still, could be wrong. Let us know what you find :)

> > Anyway, the es1371 card supports 2 input streams actually, which is an
> > added bonus. All my ALSA apps use one channel with 'dmix', OSS apps use
> > the other channel! :)
> 
> It actually has a pair of codecs. The 2nd codec is only capable of 48khz output while the first does 
> resampling in hardware.
> 
> The 2nd codec is there specifically to handle the software wavetable synth in the windows driver. 
> Linux can use it for whatever you like.

Well you would exxpect this from ALSA :D

Regards
Michael Collard