36 lines
1.1 KiB
Lua
36 lines
1.1 KiB
Lua
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ardour { ["type"] = "Snippet", name = "plugin automation2" }
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function factory () return function ()
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local playhead = Session:transport_frame ()
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local samplerate = Session:nominal_frame_rate ()
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local r = Session:route_by_remote_id(3)
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-- get AutomationControList, ControlList and ParameterDescriptor
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local acl, cl, pd = ARDOUR.LuaAPI.plugin_automation (r:nth_plugin (0), 0)
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if not acl:isnil() then
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print ("Parameter Range", pd.lower, pd.upper)
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print ("Current value", cl:eval(playhead))
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-- prepare undo operation
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Session:begin_reversible_command ("Automatix")
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local before = acl:get_state()
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-- remove future automation
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cl:truncate_end (playhead)
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-- add new data points after the playhead 1 sec min..max
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-- without guard-points, but with initial (..., false, true)
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for i=0,10 do
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cl:add (playhead + i * samplerate / 10,
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pd.lower + math.sqrt (i / 10) * (pd.upper - pd.lower),
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false, true)
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end
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-- save undo
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local after = acl:get_state()
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Session:add_command (acl:memento_command(before, after))
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Session:commit_reversible_command (nil)
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end
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end end
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