9 Jul
2005
9 Jul
'05
10:58 a.m.
On Sat, 9 Jul 2005 15:24:20 +0300, Artemio <artemio(a)kdemail.net> wrote:
Hello all!
I am here to ask you one thing. If I want sample-precise realtime
control for the plugin, should I be getting all the parameters inside
the cycle which travels through the buffer contents?
[...]
Hi,
LADSPA hosts refresh control data on a per buffer basis. Of course you
can read the control data while processing a buffer as many times you
want, but you won't get any different values.
From ladspa.h:
Control data is communicated
using single LADSPA_Data values. Control
data has a single value at the start of a call to the `run()' or
`run_adding()' function, and may be considered to remain this value
for its duration.
However, you may want to do simple interpolation/filtering of the
incoming control stream, so user interaction results in no audible
pops/clicks (due to abrupt changes in incoming control values on buffer
boundaries). It depends on the DSP you perform if this is needed.
Tom