blob: edd67eb7aff4bb30ea0de774bdfc4f376f97bbe7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
ardour {
["type"] = "session",
name = "MIDI Record Enable",
category = "Example", -- "Utility"
license = "MIT",
author = "Ardour Lua Task Force",
description = [[An example script to start recording on note-on.]]
}
function factory ()
return function (n_samples)
if Session:actively_recording() then return end -- when recording already, do nothing
-- iterate over all MIDI ports
_, t = Session:engine ():get_ports (ARDOUR.DataType.midi (), ARDOUR.PortList ())
for p in t[2]:iter () do
-- skip output ports
if not p:receives_input () then goto next end
local midiport = p:to_midiport ()
-- and skip async event ports
if midiport:isnil () then goto next end
local mb = midiport:get_midi_buffer (n_samples) -- get the midi-data buffers
local events = mb:table () -- copy event list into lua table
for _,e in pairs (events) do -- iterate over all events in the midi-buffer
if bit32.band (e:buffer():array()[1], 0xf0) == 0x90 then -- note on
Session:maybe_enable_record (true) -- global record-enable from rt-context
-- maybe-enable may fail if there are no tracks or step-entry is active
-- roll transport if record-enable suceeded:
if ARDOUR.Session.RecordState.Enabled == Session:record_status() then
Session:request_transport_speed (1.0, true) -- ...and go.
end
return
end
end
::next::
end
end
end
|
