From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: Problem with multiopen on SB Audigy 2
Date: Wed, 08 Oct 2003 16:39:22 +0200
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To: Jaroslav Kysela <perex@suse.cz>
Cc: James Courtier-Dutton <James@superbug.demon.co.uk>, alsa-devel <alsa-devel@lists.sourceforge.net>
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At Wed, 8 Oct 2003 16:24:33 +0200 (CEST),
Jaroslav wrote:
> 
> On Wed, 8 Oct 2003, Takashi Iwai wrote:
> 
> > > but if DVD (or other 4+.0+ format) is used, then use channels
> > > independently. It appears that James is trying to do something
> > > non-standard (perhaps playing two DVDs simultaneously), so I am not sure,
> > > if we should have these things in our configurations.
> > >
> > > It's something like "auto" stuff, but I would like to avoid user
> > > confusion.
> >
> > hmm, now i see the problem.  i think disabling "wave surround, center,
> > lfe" doesn't belong to the rear or center/lfe pcm, but it's necessary
> > for front pcm.  or even better if we have FX bus bypassing these
> > duplications.
> 
> Yes, new FX bus will solve it, but on plain EMU10K1 chips, we're running
> out of GPRs.

grrr...

> > > Anyway, users are already confused with emu10k1+ mixers, so we have to do
> > > things more simple.
> >
> > yep, i'd like to see the new design of the routing/volume.
> >
> > at least, it'd be nice to have:
> >
> > - a new real "master" volume for all channels
> 
> I'm still not sure, if we should handle these things in the driver.
> Hardware is not designed in this way and we should describe hardware
> in the driver as most accurate as we can.
 
IMO, the master volume is a feature we mostly need.
in the case of emu10k1, it's much easier to implement this on the
driver (as a digital attenuator) rather than implementing it outside
the kernel space (except for the lack of GPR space).


Takashi


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