diff options
author | Robin Gareus <robin@gareus.org> | 2017-04-25 16:46:21 +0200 |
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committer | Robin Gareus <robin@gareus.org> | 2017-04-25 16:46:21 +0200 |
commit | b8a7b444e2bef48a57cd6ffa70aa6c76ef340574 (patch) | |
tree | 2882b3bec8a5882c0b99a44577da0467afe2084c /scripts/midi_cc_to_automation.lua | |
parent | 35aa4f692a60394fe2756be44661a411e80c7f69 (diff) |
Update LuaDialog scripts
Diffstat (limited to 'scripts/midi_cc_to_automation.lua')
-rw-r--r-- | scripts/midi_cc_to_automation.lua | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/scripts/midi_cc_to_automation.lua b/scripts/midi_cc_to_automation.lua new file mode 100644 index 0000000000..26fdd48a1b --- /dev/null +++ b/scripts/midi_cc_to_automation.lua @@ -0,0 +1,113 @@ +ardour { ["type"] = "EditorAction", name = "MIDI CC to Plugin Automation", + license = "MIT", + author = "Ardour Team", + description = [[Parse a given MIDI control changes (CC) from all selected MIDI regions and convert them into plugin parameter automation]] +} + +function factory () return function () + -- find target parameters + local targets = {} + local have_entries = false + for r in Session:get_routes():iter() do -- for every track/bus + local i = 0 + while 1 do -- iterate over all plugins on the route + local proc = r:nth_plugin (i) + if proc:isnil () then break end + local plug = proc:to_insert ():plugin (0) + local n = 0 + for j = 0, plug:parameter_count () - 1 do -- iterate over all plugin parameters + if plug:parameter_is_control(j) then + if plug:parameter_is_input(j) then + local nn = n + if not targets [r:name ()] then targets [r:name ()] = {} end + if not targets [r:name ()][proc:display_name ()] then targets [r:name ()][proc:display_name ()] = {} end + targets [r:name ()][proc:display_name ()][plug:parameter_label(j)] = function () return {["p"] = proc, ["n"] = nn} end + have_entries = true + end + n = n + 1 + end + end + i = i + 1 + end + end + + -- bail out if there are no parameters + if not have_entries then + LuaDialog.Message ("CC to Plugin Automation", "No Plugins found", LuaDialog.MessageType.Info, LuaDialog.ButtonType.Close):run() + collectgarbage () + return + end + + -- create a dialog, ask user which MIDI-CC to map and to what parameter + local dialog_options = { + { type = "heading", title = "MIDI CC Source", align = "left" }, + { type = "number", key = "channel", title = "Channel", min = 1, max = 16, step = 1, digits = 0 }, + { type = "number", key = "ccparam", title = "CC Parameter", min = 0, max = 127, step = 1, digits = 0 }, + { type = "heading", title = "Target Track and Plugin", align = "left"}, + { type = "dropdown", key = "param", title = "Target Parameter", values = targets } + } + local od = LuaDialog.Dialog ("Select Taget", dialog_options) + local rv = od:run() + + if not rv then + od = nil collectgarbage () + return + end + + -- parse user response + + local midi_channel = rv["channel"] - 1 + local cc_param = rv["ccparam"] + local pp = rv["param"]() + local al, _, pd = ARDOUR.LuaAPI.plugin_automation (pp["p"], pp["n"]) + od = nil collectgarbage () + assert (al) + assert (midi_channel >= 0 and midi_channel < 16) + assert (cc_param >= 0 and cc_param < 128) + + -- all systems go + local add_undo = false + Session:begin_reversible_command ("CC to Automation") + local before = al:get_state() + al:clear_list () + + -- for all selected MIDI regions + local sel = Editor:get_selection () + for r in sel.regions:regionlist ():iter () do + local mr = r:to_midiregion () + if mr:isnil () then goto next end + + local bfc = ARDOUR.DoubleBeatsFramesConverter (Session:tempo_map (), r:position ()) + local ec = mr:control (Evoral.Parameter (ARDOUR.AutomationType.MidiCCAutomation, midi_channel, cc_param), false) + if ec:isnil () then goto next end + if ec:list ():events ():size() == 0 then goto next end + + for av in ec:list ():events ():iter () do + local val = pd.lower + (pd.upper - pd.lower) * av.value / 127 + al:add (bfc:to (av.when), val, false, true) + add_undo = true + end + ::next:: + end + + -- save undo + if add_undo then + local after = al:get_state() + Session:add_command (al:memento_command(before, after)) + Session:commit_reversible_command (nil) + else + Session:abort_reversible_command () + LuaDialog.Message ("CC to Plugin Automation", "No data was converted. Was a MIDI-region selected?", LuaDialog.MessageType.Info, LuaDialog.ButtonType.Close):run() + collectgarbage () + end +end end + + +function icon (params) return function (ctx, width, height, fg) + local txt = Cairo.PangoLayout (ctx, "ArdourMono ".. math.ceil(width * .45) .. "px") + txt:set_text ("CC\nPA") + local tw, th = txt:get_pixel_size () + ctx:set_source_rgba (ARDOUR.LuaAPI.color_to_rgba (fg)) + ctx:move_to (.5 * (width - tw), .5 * (height - th)) + txt:show_in_cairo_context (ctx) +end end |