Re: [Alsa-user] ES1370/1371/1373 hardware mixing?

[Jaroslav K. <pe...@pe...>]

On Thu, 1 May 2003, Ryan Underwood wrote:

> 
> Hi,
> 
> On Wed, Apr 30, 2003 at 09:12:35AM +0200, Jaroslav Kysela wrote:
> > 
> > It's possible with ALSA drivers (trident, emu10k1, ymfpci, cs46xx ...), 
> > too. But not for ENS137x. The stream parameters differs a bit so my 
> > decision was to use separate devices. Also, you have only two streams, 
> > it's not much for multi-open.
> 
> Is hardware mixing implemented on every card that it could possibly be
> implemented on, or is the feature missing in some drivers currently even
> though hardware supports it?

We actually supports hardware mixing on all supported hardware.

> > > Also:
> > > On the ALSA side, is there a way to have all alsa streams go through the
> > > software mixer without having to specify the dmix plugin when running
> > > each app that uses alsalib?  The C-Media card has a good driver, but the
> > > lack of hardware mixing is a significant nuisance to use it.  If there
> > > were some configuration option to make software mixing by dmix the
> > > default behavior (perhaps that alsalib could read from the user's
> > > asoundrc), it would be a lot easier to use.
> > 
> > See mail archives and look for 'pcm.!default { }' definition.
> 
> Excellent!  10 aplays running at once and a glorious cacophony of random
> sounds from my wav directory. :)
> 
> Now, is there any possibility that software mixing will ever be
> supported with the oss device?  There are still awful lot of OSS
> applications around and some (games especially) will always be OSS only.
> Also, it doesn't seem that any ALSA program can play sound while an OSS
> program is playing sound. :(

You may use alsa-oss wrapper. It redirects all OSS requests to alsa-lib.

						Jaroslav

-----
Jaroslav Kysela <pe...@su...>
Linux Kernel Sound Maintainer
ALSA Project, SuSE Labs