4 category = "Example", -- "Utility"
6 author = "Ardour Lua Task Force",
7 description = [[An Example Midi Filter for prototyping.]]
10 function dsp_ioconfig ()
11 return { { audio_in = 0, audio_out = 0}, }
14 function dsp_has_midi_input () return true end
15 function dsp_has_midi_output () return true end
17 function dsp_run (_, _, n_samples)
18 assert (type(midiin) == "table")
19 assert (type(midiout) == "table")
22 function tx_midi (time, data)
24 midiout[cnt]["time"] = time;
25 midiout[cnt]["data"] = data;
29 -- for each incoming midi event
30 for _,b in pairs (midiin) do
31 local t = b["time"] -- t = [ 1 .. n_samples ]
32 local d = b["data"] -- get midi-event
34 if (#d == 3 and bit32.band (d[1], 240) == 144) then -- note on
37 if (#d == 3 and bit32.band (d[1], 240) == 128) then -- note off