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https://github.com/Ardour/ardour.git
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41 lines
1.4 KiB
Lua
41 lines
1.4 KiB
Lua
ardour { ["type"] = "EditorAction", name = "MIDI Brutalize",
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license = "MIT",
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author = "Ardour Team",
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description = [[Randomize MIDI Note position (de-quantize).]]
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}
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function factory () return function ()
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local sel = Editor:get_selection ()
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-- iterate over all selected regions
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for r in sel.regions:regionlist ():iter () do
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local mr = r:to_midiregion ()
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if mr:isnil () then goto continue end
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local ticks_per_beat = Temporal.Beats (1, 0):to_ticks ();
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local max_shift = ticks_per_beat / 4.0
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-- get MIDI Model
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local mm = mr:midi_source(0):model ()
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-- Prepare Undo command
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local midi_command = mm:new_note_diff_command ("MIDI Note Brutalize")
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-- Iterate over all notes of the MIDI region
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for note in ARDOUR.LuaAPI.note_list (mm):iter () do
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-- note is-a https://manual.ardour.org/lua-scripting/class_reference/#Evoral:NotePtr
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local old_pos = note:time ()
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-- shift +/- 1/16th note
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local tickdiff = math.floor ((math.random() - 0.5) * max_shift)
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--print (old_pos:get_beats (), old_pos:get_ticks (), tickdiff)
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local new_pos = Temporal.Beats (old_pos:get_beats (), old_pos:get_ticks () + tickdiff)
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if old_pos ~= new_pos and new_pos > Temporal.Beats (0, 0) then
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local new_note = ARDOUR.LuaAPI.new_noteptr (note:channel (), new_pos, note:length (), note:note (), note:velocity ())
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midi_command:remove (note)
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midi_command:add (new_note)
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end
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end
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mm:apply_command (Session, midi_command)
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::continue::
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end
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end end
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