diff --git a/share/scripts/new_clean_playlists.lua b/share/scripts/new_clean_playlists.lua new file mode 100644 index 0000000000..3ae0c58567 --- /dev/null +++ b/share/scripts/new_clean_playlists.lua @@ -0,0 +1,261 @@ +ardour { ["type"] = "EditorAction", name = "New clean playlists", + license = "MIT", + author = "Mathieu Picot (Houston4444)", + description = [[Copy the current playlist of selected audio tracks to a new playlist with audible regions only.]] +} + +function factory (params) return function () + + -- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:Selection + local sel = Editor:get_selection () + + -- Track/Bus Selection -- iterate over all Editor-GUI selected tracks + -- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:TrackSelection + for route in sel.tracks:routelist():iter() do + + -- each of the items 'route' is-a + -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Route + local track = route:to_track() -- see if it's a track + if track:isnil() then + -- if not, skip it + goto next_route + end + + local is_audio = false + if track:data_type():to_string() == "audio" then + is_audio = true + end + + local main_pl_name = track:name() .. "._MAIN_" + local main_pl_ex_name = track:name() .. "_ExMAIN_" + + -- find the playlist name track_name._MAIN_ + for pl in Session:playlists():playlists_for_track (track):iter() do + if pl:name() == main_pl_name then + pl:set_name(main_pl_ex_name) + break + end + end + + -- copy current playlist, get new playlist and rename it + -- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Playlist + track:use_copy_playlist() + local playlist = track:playlist() + playlist:set_name(track:name() .. "._MAIN_") + + -- we will stock here the values needed to modify/remove regions + local regions_to_modify = {} + local point_b = 0 + local point_c = 0 + + for r in playlist:region_list():iter() do + local r_front = r:position():samples() + local r_end = r_front + r:length():samples() + + -- region can be finally splited into many segments + -- 'segments' is a table containing segments with the form + -- {{seg1_start, seg1_end}, {seg2_start, seg2_finish}...} + -- segments will finally be regions + local segments = {{r_front, r_end}} + + -- values used for audio tracks to prevent cut during an audible fade + local r_no_cut_before = r_front + local r_no_cut_after = r_end + + if is_audio then + local ra = r:to_audioregion() + if ra:fade_in_active() then + r_no_cut_before = r_front + ra:fade_in_length():samples() + 64 + end + + if ra:fade_out_active() then + r_no_cut_after = r_end - ra:fade_out_length():samples() - 64 + end + end + + for rg in playlist:region_list():iter() do + -- ignore regions equal or above this one + if rg:layer() <= r:layer() then + goto next_rg + end + + -- get points between which lower regions can be cut + local cut_point_left = rg:position():samples() + local cut_point_right = cut_point_left + rg:length():samples() + + if is_audio then + rga = rg:to_audioregion() + + cut_point_left = cut_point_left + 64 + cut_point_right = cut_point_right - 64 + + if rga:fade_in_active() then + cut_point_left = cut_point_left + rga:fade_in_length():samples() + end + + if rga:fade_out_active() then + cut_point_right = cut_point_right - rga:fade_out_length():samples() + end + end + + -- ignore regions with no overlap with this one + if cut_point_left >= segments[#segments][2] + or cut_point_right <= segments[1][1] then + goto next_rg + end + + -- stock here the segments ids we should remove + local remove_id_list = {} + + -- iterate segments + for i, s in pairs(segments) do + if cut_point_right <= s[1] or cut_point_left >= s[2] then + -- rg: ___ or ____ + -- s : ___ ____ + + -- compared region doesn't overlap this segment + goto next_segment + + elseif cut_point_left <= s[1] and cut_point_right >= s[2] then + -- rg: ________ + -- s : ____ + + -- compared region exceed both front and end + -- this segment will be removed + table.insert(remove_id_list, i) + goto next_segment + + elseif cut_point_left <= s[1] then + -- rg: ____ + -- s : _____ + + if is_audio then + -- audio segment is cut 64 samples before compared region fade out + -- in the limit of the original segment + -- it also do not cut during the region fades + if cut_point_right > r_no_cut_before then + s[1] = math.min(cut_point_right, + r_no_cut_after) + end + else + s[1] = cut_point_right + end + + elseif cut_point_right >= s[2] then + -- rg: _____ + -- s : _____ + + if is_audio then + -- audio segment is cut 64 samples after compared region fade in + -- in the limit of the original segment + if cut_point_left < r_no_cut_after then + s[2] = math.max(cut_point_left, + r_no_cut_before) + end + else + s[2] = cut_point_left + end + + else + -- rg: B___C + -- s : A___________D + + -- worst case, compared region rg is above r, + -- rg starts after and finish before r. + + point_b = cut_point_left + point_c = cut_point_right + + if is_audio then + point_b = math.max(point_b, r_no_cut_before) + point_c = math.min(point_c, r_no_cut_after) + + if point_b > r_no_cut_after or point_c < r_no_cut_before then + -- we must keep the fade integrity + goto next_segment + end + end + + -- we can modify the table now because + -- we break the iteration loop just after. + -- add the new segment C->D + table.insert(segments, i + 1, {point_c, s[2]}) + + -- reduce the original segment (from A->D to A->B) + s[2] = point_b + break + end + ::next_segment:: + end + + -- remove segments that need to be removed + for i=1, #remove_id_list do + table.remove( + segments, remove_id_list[#remove_id_list +1 -i]) + end + + -- if all segments are removed, region will be deleted + if segments[1] == nil then break end + + ::next_rg:: + end + + -- security check + -- prevent segments and gaps shorter than 128 + -- and overlap segments from the same region + local last_end = -1 + local new_segments = {} + + for i, s in pairs(segments) do + if s[2] - s[1] > 128 then + if s[1] > last_end + 128 then + table.insert(new_segments, s) + else + new_segments[#new_segments][2] = s[2] + end + end + last_end = s[2] + end + + -- remember the regions we have to delete or modify + table.insert(regions_to_modify, {r, new_segments}) + end + + -- Remove, split or cut needed regions + for i=1, #regions_to_modify do + r = regions_to_modify[i][1] + segments = regions_to_modify[i][2] + + if #segments == 0 then + playlist:remove_region(r) + else + for j=1, #segments do + if j == #segments then + -- last segment, cut directly this region + rg = r + else + -- 2 segments or more for this region + -- So we need to clone the region before to cut it + rg = ARDOUR.RegionFactory.clone_region(r, true, false) + playlist:add_region(rg, rg:position(), 1, false, 0, 0, false) + + while rg:layer() > r:layer() + do + rg:lower() + end + end + + -- finally cut the region if needed + if segments[j][1] ~= rg:position():samples() then + rg:cut_front(Temporal.timepos_t(segments[j][1]), 0) + end + + if segments[j][2] ~= rg:position():samples() + rg:length():samples() then + rg:cut_end(Temporal.timepos_t(segments[j][2]), 0) + end + end + end + end + ::next_route:: + end +end end