[PlanetCCRMA] Re: [PD] Audio I/O stuck with both ALSA and Jack

[Frank Barknecht]

Hallo,
Fernando Pablo Lopez-Lezcano hat gesagt: // Fernando Pablo Lopez-Lezcano wrote:

> You could try using the alsa plug interface which can do format
> conversions (including interleaving and de-interleaving), but I seem to
> remember that the current pd alsa code does not let you use generic alsa
> device names but just card numbers which correspond to the hardware
> interface (I may be wrong here). 

Fortunately you're wrong at last: the latest Pd from Miller's site,
pd-0.37-1test6, supports setting the alsa device as a string again by
using the new "-alsaadd" option. So this: 

 $ pd -alsa -alsaadd plughw:1

should work. It thus is possible to define arbitrary alsa devices in
~/.asoundrc to use in Pd like these:

 pcm.pdhw
 {
     type hw
     card 1
 }
 
 ctl.pdhw 
 {
     type hw
     card 1
 }
 
 pcm.pdplug
 {
     type plug
     slave.pcm "pdhw"
 }
 

Then play with -alsaadd:
 
 $ pd -alsa -alsaadd pdhw
 $ pd -alsa -alsaadd pdplug

Of course a lot more device definitions are open to Pd now. The RME
surely will need some fiddling to get it to work in Pd. 

Here's some links for setting up a decent asoundrc for the RME cards
(I don't own one): 

http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html#pcm_plugins
http://alsa.opensrc.org/index.php?page=.asoundrc
http://alsa.opensrc.org/index.php?page=RME+Hammerfall+.asoundrc

ciao
-- 
 Frank Barknecht                               _ ______footils.org__