2016-07-16 20:44:14 -04:00
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<p>
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Ardour does not send every possible feedback value for each channel.
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It does send expanded information on the selected channel. There are
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also extra commands for the selected strip. All the feedback and
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select commands have their own path <em>/select</em>.
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This means that for the selected channel the surface does not have to
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keep track of the strip ID. The /select strip will follow the
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"current mixer strip" in the GUI editor window.
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</p>
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<p>
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There are two major uses for this:
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<ol>
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<li>Single strip control surfaces. Using
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<em>/access_action Editor/select-next-route</em> or
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<em>/access_action Editor/select-prev-route</em>
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to step through the mixer strips.</li>
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<li>Using a "Super strip" section of knobs to control parts
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of the strip that are changed less often such as polarity, sends or
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plugin parameters.</li>
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</ol>
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</p>
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<p>
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Selection in Ardour's OSC implementation are complicated by the
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possibility of using more than one OSC controller at the same time.
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User "A" may select strip 4 and use a selected controller to make
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changes to that strip. User "B" may subsequently select strip 7 to
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make changes on. This leaves user "A" making changes to strip 7
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which they did not choose.
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</p>
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<p>
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For this reason Ardour offers local expansion aside from the GUI
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selection. Local expansion only affects the one OSC controller. GUI
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selection is global and affects all controllers using GUI selection
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as well as the GUI.
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</p>
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2017-01-14 11:43:09 -05:00
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<p class="note">
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Both select and expansion use the /select set of commands.
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</p>
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2016-07-16 20:44:14 -04:00
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<p>
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In general, in a one user situation where that one user may use either
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the OSC surface or the GUI, using GUI based selection makes the most
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sense. This is the default because this is the more common use.
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</p>
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<p>
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When there is more than one operator, then expansion only is the
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mode of choice. It may make sense for one of the surfaces to
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use GUI selection where the operator is also using the GUI for some
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things. However, the set up should be carefully analyzed for the
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possibility of selection confusions. Expansion should be
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considered the <em>safe</em> option.
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</p>
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<p>
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It is always ok to use expansion on the surface even in a one
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user scenario. This allows the user to use GUI and surface selection
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for different uses.
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</p>
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<p>
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It is also possible to use both if desired. /strip/select will ways
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set the GUI select, but /strip/expand will set the select feedback
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and commands locally without changing the GUI select. Another
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/strip/expand or a /strip/select will override that expand command
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and releasing the /strip/expand or /select/expand (setting it to 0 or
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2017-01-14 11:43:09 -05:00
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false) will set the /select set of commands and feedback back to
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whichever strip the GUI has selected at that time. This could be used
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to switch between the GUI select and the local expand to compare two
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strips settings.
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2016-07-16 20:44:14 -04:00
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</p>
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2017-02-13 14:53:37 -05:00
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