92 lines
2.6 KiB
Lua
92 lines
2.6 KiB
Lua
-- cd gtk2_ardour; ./arlua < ../tools/split_benchmark.lua
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-- This script creates some tracks, records noise,
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-- and then splits recorded regions on all tracks on every
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-- timecode frame (30 regions/sec)
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reclen = 30 -- seconds to record
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n_tracks = 16 -- number of tracks to create
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backend = AudioEngine:set_backend("None (Dummy)", "", "")
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backend:set_device_name ("Uniform White Noise")
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os.execute('rm -rf /tmp/luabench')
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s = create_session ("/tmp/luabench", "luabench", 48000)
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assert (s)
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s:new_audio_track (1, 2, nil, n_tracks, "", ARDOUR.PresentationInfo.max_order, ARDOUR.TrackMode.Normal, true)
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for t in s:get_tracks():iter() do
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t:rec_enable_control():set_value(1, PBD.GroupControlDisposition.UseGroup)
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end
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ARDOUR.LuaAPI.usleep (100000)
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s:goto_start()
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s:maybe_enable_record()
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s:request_roll (ARDOUR.TransportRequestSource.TRS_UI)
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ARDOUR.LuaAPI.usleep (1000000 * reclen)
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s:request_stop (false, false, ARDOUR.TransportRequestSource.TRS_UI);
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for t in s:get_tracks():iter() do
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t:rec_enable_control():set_value(0, PBD.GroupControlDisposition.UseGroup)
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end
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ARDOUR.LuaAPI.usleep (100000)
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s:goto_start()
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s:save_state("")
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function split_at (pos)
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local add_undo = false -- keep track if something has changed
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Session:begin_reversible_command ("Auto Region Split")
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for route in Session:get_tracks():iter() do
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local playlist = route:to_track():playlist ()
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playlist:to_stateful ():clear_changes ()
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for region in playlist:regions_at (pos):iter () do
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playlist:split_region (region, ARDOUR.MusicSample (pos, 0))
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end
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if not Session:add_stateful_diff_command (playlist:to_statefuldestructible ()):empty () then
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add_undo = true
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end
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end
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if add_undo then
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Session:commit_reversible_command (nil)
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else
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Session:abort_reversible_command ()
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end
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end
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function count_regions ()
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local total = 0
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for route in Session:get_tracks():iter() do
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total = total + route:to_track():playlist():region_list():size()
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end
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return total
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end
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stepsize = Session:samples_per_timecode_frame()
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fps = Session:nominal_sample_rate () / stepsize
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n_steps = 10
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cnt = reclen * fps / n_steps
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for x = 2, cnt do
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local playhead = Session:transport_sample ()
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local t_start = ARDOUR.LuaAPI.monotonic_time ()
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for i = 1, n_steps do
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split_at (playhead + stepsize * i)
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end
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local t_end = ARDOUR.LuaAPI.monotonic_time ()
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Session:request_locate((playhead + stepsize * n_steps), ARDOUR.LocateTransportDisposition.MustStop, ARDOUR.TransportRequestSource.TRS_UI)
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print ("n_regions:", count_regions (), "split operation dT:", (t_end - t_start) / 1000 / n_steps, "ms")
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collectgarbage ();
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ARDOUR.LuaAPI.usleep(500000)
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end
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s:save_state("")
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close_session()
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quit()
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