[PD] jack and callbacks
msp at ucsd.edu
Tue Mar 4 04:12:23 CET 2014
The "callback" flag instructs the Pd scheduler to run within callbacks
from the audio system; otherwise the audio system might still be opened
in callback mode (in portaudio or jack) or not (in alsa or mmio) but if
yes, the scheduler and the callback routine communicate via FIFOs... I chose
whichever seemed to allow the lowest latency, which depends on the system.
On Mon, Mar 03, 2014 at 08:23:07PM -0500, Jonathan Wilkes wrote:
> On 03/03/2014 07:44 PM, Peter P. wrote:
> >just learned that my Pd vanilla Pd-0.45.0 from Miller's Git sources
> >works "much better" (less drop outs, etc) under jack when enabling
> >"use callbacks".
> >Is there a way to enable this worthy parameter from the command line?
> >Perhaps a way of setting it statically, maybe in s_audio_jack.c ?
> Is there any documentation about "enable callbacks" outside of being
> littered throughout the list?
> Two more questions:
> Isn't Jack's API callback-based? What does it mean to use Jack
> without enabling callbacks?
> >Thank you and enjoy!
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