Re: future ALSA development

[Takashi Iwai <tiwai@suse.de>]

At Mon, 23 Jun 2003 09:41:32 -0400,
Paul Davis wrote:
> 
> >my afraid is that the more control flows like conditionals may lead to
> >a difficulty for a parser utility.  i.e. the parser itself would be
> >like an interprerter.  but it's true that an extesion is needed
> >anyway...
> 
> with a smile, i seem to recall noting that we'd end up with
> lisp. quasimodo had gone through the same song and dance with a custom
> configuration parser only to eventually find that guile made more
> sense in almost every way. there is some adage about reinventing lisp
> that i forget.
 
oh yeah.

btw, what was the biggest reason to change to XML in ardour?
it used guile once upon a time.


> >IMO, the current simple-mixer API is still too complicated and not a
> >good abstraction.  as you mentioned, there is a big gap between the
> >low-level expressions (control API) and the reasonable mixer
> >appearance.  the extra information for the mixer would be needed to
> >fill this gap, too.
> 
> i'd like to put in a plug for a API that includes the one basic 
> operation that JACK cannot implement on "generic" hardware:
> 
> 	  "make the signal coming to the current capture input
> 	   appear at the output".
> 
> i.e. hardware monitoring. this is a really major flaw in JACK when run
> on all consumer audio interfaces: they are quite capable of doing 
> analog-level h/w monitoring, but JACK can't use it.
> 
> i know that the semantics need to be better defined than in my
> sentence above.

this can be implemented better once when we have an ordinary-mixer
API.  the problem was that the action to do is different for each
card, and it's not abstracted (nor unified) so far.
the higher abstraction will absorb such a difference.


Takashi


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