add_tracks.lua

#!/home/rgareus/src/ardour/gtk2_ardour/arlua

--set_debug_options ("Pool")
--set_debug_options ("SessionEvents")

-- setup audio-engine (global)
AudioEngine:set_backend("None (Dummy)", "", "")
--AudioEngine:set_backend("JACK", "", "") -- connect to JACK

-- create a test session, or load it, if it exists
s = create_session ("/tmp/luatest", "luatest", 48000)
if s == nil then s = load_session ("/tmp/luatest", "luatest") end

-- look up master-bus (channel count)
inputs = 1;
outputs = inputs
mst = s:master_out();
if not mst:isnil() then outputs = mst:n_inputs():n_audio() end
mst = nil -- drop reference
assert (outputs > 0)

-- create 16 new audio tracks
s:new_audio_track (inputs, outputs, ARDOUR.RouteGroup(), 16, "",  ARDOUR.PresentationInfo.max_order, ARDOUR.TrackMode.Normal, true, true)

s:save_state("")
close_session()
quit()