[PD] PD-linux, OSS, 32-bit samples

Miller Puckette mpuckett at man104-1.ucsd.edu
Fri Jun 14 17:54:49 CEST 2002


Hi all,

Well, I for one can't get the Alsa driver running with my RME cards (on
either of two machines I've tried.)  I bet there are others in the same
situation.  So I'm stuck offering Pd support for that at least until the
ALSA folks improve their installation scene...

(by the way, does anyone else have insmod fail not finding the RME board
---which I think is distinct from not being able to allocate the memory)...?

cheers
Miller

On Fri, Jun 14, 2002 at 09:53:35AM +0200, günter geiger wrote:
> 
> 
> On Thu, 13 Jun 2002, Miller Puckette wrote:
> 
> > HI Brian,
> >
> > I think the 32 bit format isn't standard in Linux.  I too wonder what
> > the 1024 bit means to your driver, but it sounds as if I have to find a
> > better way of checking this.
> >
> > One possibility would be to add a -16bit flag which would make Pd
> > prefer to use 16 bit audio.  I'd be happy to do this if nobody can
> > think of a more canonical way to go about it...
> 
> no new flags, please, and if so, the other way round.
> Default is 16 bit, if (the reintroduced) -rme flag is present
> try 32.
> 
> There is no other card for OSS that supports 32 bit AFAIK.
> OSS kernel interface will die, I don't want to try to push new
> formats into it.
> 
> The way to go is definitely ALSA, or better jack (jackit.sourceforge.net).
> The jack audio server allows several applications to share the sound
> device, it is supposed to be low latency and it is callback based.
> (and has a simpler API, only floating point format, non-interleaved
> samples, which all fits pd very well).
> 
> In order to make it work on OSS based systems too, jack can easily
> be extended by a OSS backend, which would make it runable with
> boths API's and pd doesn't have to care about them anymore.
> 
> I am willing to implement this, if we can agree on it.
> 
> All of this has to be seen in a larger context, because the
> resurrection of the DeMuDi distribution has as one goal to be
> based on the Jack server for doing AudioI/O.
> 
> Well, I hope we can manage to show pd at its best within this
> distribution, with all externals, docs, examples, etc etc that
> all people are contributing here ...
> 
> Guenter
> 
> 



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