For instance, to use pcm.tee, one has to write
aplay -D pcm.tee:"slave_pcm_name,file_name" some_file.wav
while
aplay -D pcm.tee some_file.wav
does not work.
So if one wants to give the user a list of valid plugins, "pcm.tee" is not good.
cheers
pcm.tee {
@args [ SLAVE FILE FORMAT ]
@args.SLAVE {
type string
}
@args.FILE {
type string
}
@args.FORMAT {
type string
default raw
}
type file
slave.pcm $SLAVE
file $FILE
format $FORMAT
}
On 9/16/06, Lee Revell <[EMAIL PROTECTED]> wrote:
> On Sat, 2006-09-16 at 10:38 +0100, Mario Rossi wrote:
> > Hi,
> >
> > I was wondering whether there is a function to get the list of pcm devices?
> > It would be a list which the user could choose from.
> >
> > I've seen that if you run "aplay -L" you get it, but many of those pcm
> > devices need arguments.
> >
> > aplay -L just calls snd_config_search(..., "pcm", ...). Is there a way
> > to get a restricted list of just the actual devices that can be used
> > without arguments?
>
> It's a known issue that ALSA has no usable device enumeration API. As
> far as I know no one is working on solving it.
>
> What exactly do you mean by "PCM devices need arguments"?
>
> Lee
>
>
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