13 Jul
2010
13 Jul
'10
12:36 a.m.
On 07/12/2010 09:47 PM, fons(a)kokkinizita.net wrote:
On Mon, Jul 12, 2010 at 09:30:05PM +0100, Rui Nuno
Capela wrote:
yep, all outputs are zeroed at each cycle. i suspect some potential
garbage could be injected in the process otherwise...
problem is that input buffers are always read
before any output signal
is produced, while on the same process period cycle. iow, you're
consuming what hasn't been produced yet. that's why you'll probably get
silence, at best.
This should still work, you should get the output from the
previous cycle. Unless
1. you clear outputs before reading inputs, and
2. Jack is using the same buffer for the feedback input
and the output that connects to it.
(2) is an Jack bug wich I reported at least a year
ago.
Don't know if it has been fixed. You can work around it
by connecting a second (silent) output to the feedback
input - this stops Jack sharing the buffer. Or insert
a dummy client as you suggested.
i think that's the "zero-copy" optimization that jack pursues when ports
are single connected?
byee
--
rncbc aka Rui Nuno Capela
rncbc(a)rncbc.org