Contributing example LUA scripts

share/scripts/_add_x42_compressor.lua

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+ardour {
+	["type"]    = "EditorAction",
+	name        = "Add x42 Dynamic Compressor",
+	license     = "MIT",
+	author      = "Vincent Tassy",
+	description = [[Adds a x42 Dynamic Compressor on the current track]]
+}
+
+function factory () return function ()
+	local sel = Editor:get_selection ()
+	local proc = nil
+	-- for each selected track/bus
+	for r in sel.tracks:routelist ():iter () do
+		local i = 0;
+		local pos = 0;
+		repeat
+			proc = r:nth_processor (i) -- get Nth Ardour::Processor
+			local plugin = proc:to_plugininsert ()
+			if not plugin:isnil() then
+				pos = pos + 1
+			end
+			i = i + 1
+		until (proc:display_name() == "Fader")
+		-- select mono or stereo version of the plugin
+		if proc:input_streams():n_audio () == 2 then
+				proc = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/darc#stereo", ARDOUR.PluginType.LV2, "");
+			else
+				proc = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/darc#mono", ARDOUR.PluginType.LV2, "");
+		end
+		assert (not proc:isnil())
+		r:add_processor_by_index(proc, pos, nil, true)
+		proc = nil;
+	end
+end end