Cont'd work on route-templates

scripts/_route_template_generic_audio.lua

@@ -0,0 +1,74 @@
+ardour {
+	["type"]    = "EditorAction",
+	name        = "Generic Audio Track",
+	description = [[Example ]]
+}
+
+-- If a route_setup function is present in an Editor Action Script
+-- the script is also listed in the "add track/bus" dialog as meta-template
+--
+-- The function is expected to return a Lua table. The table may be empty.
+function route_setup ()
+	local e = Session:engine()
+	local _, t = e:get_backend_ports ("", ARDOUR.DataType("audio"), ARDOUR.PortFlags.IsOutput | ARDOUR.PortFlags.IsPhysical, C.StringVector())
+	return
+	{
+		-- keys control which AddRouteDialog controls are made sensitive.
+		-- The following keys accept a default value to pre-seed the dialog.
+		['how_many'] = t[4]:size(),
+		['name'] = 'Audio',
+		['channels'] = 2,
+		['track_mode'] = ARDOUR.TrackMode.Normal,
+		['strict_io'] = true,
+		-- these keys just need to be set (to something other than nil)
+		-- in order to set the control sensitives
+		['insert_at'] = ARDOUR.PresentationInfo.max_order,
+		['group'] = false, -- return value will be a RouteGroup*
+		['instrument'] = nil, -- return value will be a PluginInfoPtr
+	}
+end
+
+-- The Script can be used as EditorAction in which case it can
+-- optionally provide instantiation parmaters
+function action_params ()
+	return
+	{
+		['how_many'] = { title = "How Many tracks to add", default = "1" },
+		["name"]     = { title = "Track Name Prefix", default = "Audio" },
+	}
+end
+
+
+function factory (params) return function ()
+	-- When called from the AddRouteDialog, 'params' will be a table with
+	-- keys as described in route_setup() above.
+
+	local p         = params or route_setup ()
+	local name      = p["name"] or 'Audio'
+	local how_many  = p["how_many"] or 1
+	local channels  = p["channels"] or 1
+	local insert_at = p["insert_at"] or ARDOUR.PresentationInfo.max_order;
+	local group     = p["group"] or nil
+	local mode      = p["track_mode"] or ARDOUR.TrackMode.Normal
+	local strict_io = p["strict_io"] or false
+	local chan_out  = 0
+
+	if ARDOUR.config():get_output_auto_connect() == ARDOUR.AutoConnectOption.AutoConnectMaster then
+		if not Session:master_out():isnil() then
+			chan_out = Session:master_out():n_inputs ():n_audio ()
+		end
+	end
+
+	if chan_out == 0 then
+		chan_out = channels;
+	end
+
+	local tl = Session:new_audio_track (channels, chan_out, group, how_many, name, insert_at, mode)
+
+	if strict_io then
+		for t in tl:iter() do
+			t:set_strict_io (true)
+		end
+	end
+
+end end