[PD] selecting the correct alsa soundcard via commandline ...

danomatika danomatika at gmail.com
Fri Jun 12 12:35:23 CEST 2009


On Fri, 2009-06-12 at 09:37 +0200, pd-list-request at iem.at wrote:

> Hallo,
> danomatika hat gesagt: // danomatika wrote:
> 
> > As far as I know, an asoundrc dosen't help in this case.  Ubuntu
> already
> > has a default asoundrc which automatically creates an alias named
> after
> > the device.  I can't use this with pd since pd only takes the alsa
> hw or
> > plug indexes which can change depending on what gear I'm using.
> > 
> > I've also read on the list that you can use -alsaadd to add a device
> to
> > the list from a custom asoundrc, but this only adds the device to
> the
> > gui menu which I would need to access via a fudi startup message ala
> > "audio-dialog 0 0 0 0 2 ...".  Even in this case, I still have to
> have a
> > damned index to the menu item!
> 
> If you use -alsaadd, you can also use the -audiodev flag to select the
> card
> added, no need to use the FUDI message. The added device appears after
> the
> predefined devices, one hw, one plughw for each card. So with two
> cards in the
> system, the first -alsaadded card will be at index 5.
> 
> Anyway, I think, even then you still need a damned index.

*sigh* yes

> But cards don't magically enter or leave your computer: Why don't you
> prepare
> some startup scripts depending on how many cards are in the box?

With usb they do.  My undergrad training was in computer engineering so
I can't help but to always want a generic, handle everything solution. :

Well, the issue is that there's a usb midi port a may or may not use
that pd lists as an audio device, so I'm looking for a way to make sure
I use the usb soundcard.  Once again, this is a specialized embedded
environment where everything should work automatically.

In the meantime, I may not need the usb-midi device for the next couple
of shows.

---
Dan Wilcox
danomatika.com
robotcowboy.com
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