add/update lua scripts

doc/lua_scratch.lua

@@ -1,42 +0,0 @@
--------------------------------------------------------------------------------
--- collection of snippets for testing and upcoming doc
--------------------------------------------------------------------------------
-
-
--------------------------------------------------------------------------------
--- replace a plugin
-route = Session:route_by_remote_id(1)
-old = route:nth_plugin(0)
-new = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/fil4#stereo", ARDOUR.PluginType.LV2, "");
-route:replace_processor (old, new, nil)
-old = nil new = nil -- explicitly drop references (unless they're local vars)
-
-
--------------------------------------------------------------------------------
--- add a LuaProcessor (here "Scope") to all tracks
-for t in Session:get_tracks():iter() do
-	local pos = 0 -- insert at the top
-	local proc = ARDOUR.LuaAPI.new_luaproc(Session, "Inline Scope");
-	t:add_processor_by_index(proc, pos, nil, true)
-	-- optionally set some parameters
-	ARDOUR.LuaAPI.set_processor_param (proc, 0, 5) -- timescale 5sec
-end
-
--------------------------------------------------------------------------------
--- add a Plugin (here LV2) to all mono tracks that contain the pattern "dru"
--- and load a plugin-preset (if it exists)
-for r in Session:get_routes():iter() do
-	if (string.match (r:name(), "dru") and r:n_inputs():n_audio() == 1) then
-	local proc = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/fil4#mono", ARDOUR.PluginType.LV2, "cutbass");
-	r:add_processor_by_index(proc, 0, nil, true)
-	end
-end
-
--------------------------------------------------------------------------------
--- load a plugin preset
-route = Session:route_by_remote_id(2)
--- to 4th plugin (from top), ardour starts counting at zero
-plugin = route:nth_plugin(3):to_insert():plugin(0)
-ps = plugin:preset_by_label("cutbass") -- get preset by name
-print (ps.uri)
-plugin:load_preset (ps)

scripts/addscopes.lua

@@ -20,8 +20,9 @@ end
 function factory (params)
 	return function ()
 		-- get configuration
-		local uniq = params["unique"] or "yes"
-		local pos = params["position"] or 0
+		local p = params or {}
+		local uniq = p["unique"] or "yes"
+		local pos = p["position"] or 0
 
 		-- loop over all tracks
 		for t in Session:get_tracks():iter() do

scripts/s_pluginutils.lua

@@ -0,0 +1,36 @@
+ardour { ["type"] = "Snippet", name = "Plugin Utils" }
+
+function factory () return function ()
+
+	-------------------------------------------------------------------------------
+	-- add a Plugin (here LV2) to all mono tracks that contain the pattern "dru"
+	-- and load a plugin-preset (if it exists)
+	for r in Session:get_routes():iter() do
+		if (string.match (r:name(), "dru") and r:n_inputs():n_audio() == 1) then
+			local proc = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/fil4#mono", ARDOUR.PluginType.LV2, "cutbass");
+			r:add_processor_by_index(proc, 0, nil, true)
+		end
+	end
+
+
+	-------------------------------------------------------------------------------
+	-- load a plugin preset
+	route = Session:route_by_remote_id(2)
+	-- to 4th plugin (from top), ardour starts counting at zero
+	plugin = route:nth_plugin(3):to_insert():plugin(0)
+	ps = plugin:preset_by_label("cutbass") -- get preset by name
+	print (ps.uri)
+	plugin:load_preset (ps)
+
+
+	-------------------------------------------------------------------------------
+	-- add a LuaProcessor (here "Scope") to all tracks
+	for t in Session:get_tracks():iter() do
+		local pos = 0 -- insert at the top
+		local proc = ARDOUR.LuaAPI.new_luaproc(Session, "Inline Scope");
+		t:add_processor_by_index(proc, pos, nil, true)
+		-- optionally set some parameters
+		ARDOUR.LuaAPI.set_processor_param (proc, 0, 5) -- timescale 5sec
+	end
+
+end end

scripts/s_replaceplugin.lua

@@ -0,0 +1,11 @@
+ardour { ["type"] = "Snippet", name = "Replace Plugin" }
+
+function factory () return function ()
+
+	route = Session:route_by_remote_id(1)
+	old = route:nth_plugin(0)
+	new = ARDOUR.LuaAPI.new_plugin(Session, "http://gareus.org/oss/lv2/fil4#stereo", ARDOUR.PluginType.LV2, "");
+	route:replace_processor (old, new, nil)
+	old = nil new = nil -- explicitly drop references (unless they're local vars)
+
+end end