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-- cd gtk2_ardour; ./arlua < ../tools/split_benchmark.lua
reclen = 30 -- seconds
backend = AudioEngine:set_backend("None (Dummy)", "", "")
backend:set_device_name ("Uniform White Noise")
os.execute('rm -rf /tmp/luabench')
s = create_session ("/tmp/luabench", "luabench", 48000)
assert (s)
s:new_audio_track (1, 2, nil, 16, "", ARDOUR.PresentationInfo.max_order, ARDOUR.TrackMode.Normal)
for t in s:get_tracks():iter() do
t:rec_enable_control():set_value(1, PBD.GroupControlDisposition.UseGroup)
end
ARDOUR.LuaAPI.usleep (100000)
s:goto_start()
s:maybe_enable_record()
s:request_transport_speed(1.0, true, 4)
ARDOUR.LuaAPI.usleep (1000000 * reclen)
s:request_transport_speed(0.0, false, 4)
for t in s:get_tracks():iter() do
t:rec_enable_control():set_value(0, PBD.GroupControlDisposition.UseGroup)
end
ARDOUR.LuaAPI.usleep (100000)
s:goto_start()
s:save_state("")
function split_at (pos)
local add_undo = false -- keep track if something has changed
Session:begin_reversible_command ("Auto Region Split")
for route in Session:get_tracks():iter() do
local playlist = route:to_track():playlist ()
playlist:to_stateful ():clear_changes ()
for region in playlist:regions_at (pos):iter () do
playlist:split_region (region, ARDOUR.MusicSample (pos, 0))
end
if not Session:add_stateful_diff_command (playlist:to_statefuldestructible ()):empty () then
add_undo = true
end
end
if add_undo then
Session:commit_reversible_command (nil)
else
Session:abort_reversible_command ()
end
end
function count_regions ()
local total = 0
for route in Session:get_tracks():iter() do
total = total + route:to_track():playlist():region_list():size()
end
return total
end
stepsize = Session:samples_per_timecode_frame()
fps = Session:nominal_sample_rate () / stepsize
n_steps = 10
cnt = reclen * fps / n_steps
for x = 2, cnt do
local playhead = Session:transport_sample ()
local t_start = ARDOUR.LuaAPI.monotonic_time ()
for i = 1, n_steps do
split_at (playhead + stepsize * i)
end
local t_end = ARDOUR.LuaAPI.monotonic_time ()
Session:request_locate((playhead + stepsize * n_steps), false, 5)
print (count_regions (), (t_end - t_start) / 1000 / n_steps)
collectgarbage ();
ARDOUR.LuaAPI.usleep(500000)
end
s:save_state("")
close_session()
quit()
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