[PD] pd start&alsa (maybe not...)

guenter geiger geiger at xdv.org
Mon Mar 29 13:52:30 CEST 2004

This seems to be a neverending topic. The hammerfall cards want a
different format, which is currently not supported by pd's ALSA
code. It might be possible to use ALSA's plugin device to do
on the fly conversion, but I am not sure if the latency is better
than with jack.

For the rest, if people with a hdsp promise me to test it I could
change the ALSA driver to work with the hdsp. I do not have such a
card myself.


On Mon, 29 Mar 2004, derek holzer wrote:

> Hi carmen,
> ok. you've got me interested. now how about giving us some details? like
> what file, what line, what flag, where where where...
> thx,
> d.
> carmen wrote:
> >>OSS-emulation or Jack. I would recommend going these routes, rather than
> >>fighting with ALSA.
> >
> >
> > its no so much a fight, ALSA is just left in the dark, and you need to give it a flashlight - if youre up for the task you might want to add an extended alsa-options flag to the pd argv list, since usually its just not trying to talk to the soundcard in its preferred format (16int, 24int, 32bit ieee, etc). it is pretty redundant to use jack between pd and alsa solely to have more explicit alsa connection parameters at your disposal..
> --
> derek holzer ::: http://www.umatic.nl
> ---Oblique Strategy # 169:
> "Use filters"
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