69 lines
2.3 KiB
Lua
69 lines
2.3 KiB
Lua
ardour { ["type"] = "Snippet", name = "VCA Slave Examples",
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license = "MIT",
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author = "Ardour Team",
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}
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function factory () return function ()
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-- find possible masters & slave, allow selection in dropdown menu
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local targets = {}
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local sources = {}
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local have_masters = false
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local have_slaves = false
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for v in Session:vca_manager ():vcas() :iter () do -- for each VCA
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sources [v:name ()] = v
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have_masters = true
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end
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for s in Session:get_stripables ():iter () do -- for every track/bus/vca
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if s:is_monitor () or s:is_auditioner () then goto nextroute end -- skip special routes
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targets [s:name ()] = s
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have_slaves = true;
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::nextroute::
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end
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-- bail out if there are no parameters
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if not have_slaves then
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LuaDialog.Message ("VCA Slave Example", "No Slavables found", LuaDialog.MessageType.Info, LuaDialog.ButtonType.Close):run ()
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sources = nil
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collectgarbage ()
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return
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end
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if not have_masters then
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LuaDialog.Message ("VCA Slave Example", "No VCA masters found", LuaDialog.MessageType.Info, LuaDialog.ButtonType.Close):run ()
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targets = nil
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collectgarbage ()
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return
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end
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-- create a dialog, ask user which master to assign to which slave
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local dialog_options = {
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{ type = "dropdown", key = "master", title = "Control Master", values = sources },
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{ type = "dropdown", key = "slave", title = "Control Slave", values = targets }
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}
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local rv = LuaDialog.Dialog ("Select VCA assignment", dialog_options):run ()
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targets = nil -- drop references (the table holds shared-pointer references to all strips)
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collectgarbage () -- and release the references immediately
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if not rv then return end -- user canceled the operation
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-- parse user response
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local mst = rv["master"]
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local slv = rv["slave"]
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assert (not slv:to_slavable ():isnil ())
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-- test if mst is already controlled by slv (directly or indirectly)
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-- if so, don't allow the connection
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if (not slv:to_slavable ():assigned_to (Session:vca_manager(), mst)) then
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-- if slv controlled by master, disconnect it
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if (slv:slaved_to (mst)) then
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slv:to_slavable ():unassign (mst)
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else
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slv:to_slavable ():assign (mst)
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end
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else
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LuaDialog.Message ("VCA Slave Example", "Recursive VCA assignment ignored", LuaDialog.MessageType.Info, LuaDialog.ButtonType.Close):run ()
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end
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end end
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