Product manual

Input/Output Mapping Howto
This howto document tells you how to patch plugins and their input/output lines (physical
input/output devices) to QLC+'s universes.
QLC+ by default provides 4 input and 4 output universes. These numbers may be increased if
needed, but a recompilation is necessary, since they are hardcoded (look in engine/src/doc.h).
Input/Output Manager
To access the Input/Output Manager, just click on the tab with the icon placed on the bottom
of the QLC+ main screen.
The screen is composed in this way:
On the left side there is the list of internal universes that QLC+ can manage
On the right side there is the list of devices and their mapped inputs, outputs and feedback
lines that QLC+ has detected
On the bottom right side there is a panel displaying brief information of the currently
selected device
Every device has a checkbox whenever an input, output or feedback line is available.
Each QLC+ universe can map a single input, a single output and a single feedback line
Some plugins might require configuration before they can be used so you might not be able to
see all inputs/outputs at first. The configuration button is place next to the information panel and it
is enabled if the plugin allows any manual setting.
The button is icon is:
Patching
To patch a plugin's input/output line to the selected universe, you need to place a checkmark on
that particular plugin's input/output line. You can have only one line assigned to a universe at a
time, so when you check another line, the checkmark will move from its previous position to the
one you checked.
If you don't see any line on a plugin, it means you don't have any device that QLC+ understands
and you're left with the one and only (non-selectable) choice: None.
When an input/output line is checked, the corresponding universe information on the left side of
the screen will change and will display the new configuration set.
The plugin information on the bottom right side of the screen will change as well and will give
you the new status of the plugin line.
Input and Feedbacks
When a plugin input line is checked, it gets enabled right away, so you can perform a basic test
to double check if your hardware is working properly with QLC+.
Just move a fader/knob on your external device, and if everything works fine, you will see a
icon appearing beside the corresponding universe on the left side of the screen.
If your input device supports a return channel, QLC+ can send a visual/mechanical feedback to it.
Devices such as Behringer BCF2000 support this feature.
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