70 lines
2.8 KiB
HTML
70 lines
2.8 KiB
HTML
---
|
|
layout: default
|
|
title: Selection/Feedback Expansion Considerations in OSC
|
|
---
|
|
|
|
<p>
|
|
Ardour does not send every possible feedback value for each channel.
|
|
It does send expanded information on the selected channel. There are
|
|
also extra commands for the selected strip. All the feedback and
|
|
select commands have their own path <em>/select</em>.
|
|
This means that for the selected channel the surface does not have to
|
|
keep track of the strip ID. The /select strip will follow the
|
|
"current mixer strip" in the GUI editor window.
|
|
</p>
|
|
<p>
|
|
There are two major uses for this:
|
|
<ol>
|
|
<li>Single strip control surfaces. Using
|
|
<em>/access_action Editor/select-next-route</em> or
|
|
<em>/access_action Editor/select-prev-route</em>
|
|
to step through the mixer strips.</li>
|
|
<li>Using a "Super strip" section of knobs to control parts
|
|
of the strip that are changed less often such as polarity, sends or
|
|
plugin parameters.</li>
|
|
</ol>
|
|
</p>
|
|
<p>
|
|
Selection in Ardour's OSC implementation are complicated by the
|
|
possibility of using more than one OSC controller at the same time.
|
|
User "A" may select strip 4 and use a selected controller to make
|
|
changes to that strip. User "B" may subsequently select strip 7 to
|
|
make changes on. This leaves user "A" making changes to strip 7
|
|
which they did not choose.
|
|
</p>
|
|
<p>
|
|
For this reason Ardour offers local expansion aside from the GUI
|
|
selection. Local expansion only affects the one OSC controller. GUI
|
|
selection is global and affects all controllers using GUI selection
|
|
as well as the GUI.
|
|
</p>
|
|
<p>
|
|
In general, in a one user situation where that one user may use either
|
|
the OSC surface or the GUI, using GUI based selection makes the most
|
|
sense. This is the default because this is the more common use.
|
|
</p>
|
|
<p>
|
|
When there is more than one operator, then expansion only is the
|
|
mode of choice. It may make sense for one of the surfaces to
|
|
use GUI selection where the operator is also using the GUI for some
|
|
things. However, the set up should be carefully analyzed for the
|
|
possibility of selection confusions. Expansion should be
|
|
considered the <em>safe</em> option.
|
|
</p>
|
|
<p>
|
|
It is always ok to use expansion on the surface even in a one
|
|
user scenario. This allows the user to use GUI and surface selection
|
|
for different uses.
|
|
</p>
|
|
<p>
|
|
It is also possible to use both if desired. /strip/select will ways
|
|
set the GUI select, but /strip/expand will set the select feedback
|
|
and commands locally without changing the GUI select. Another
|
|
/strip/expand or a /strip/select will override that expand command
|
|
and releasing the /strip/expand or /select/expand (setting it to 0 or
|
|
false) will set the /select set of commands/feedback back to whichever
|
|
strip the GUI has selected at that time. This could be used to switch
|
|
between the GUI select and the local expand to compare two strips
|
|
settings.
|
|
</p>
|