67 lines
2.2 KiB
Lua
67 lines
2.2 KiB
Lua
ardour { ["type"] = "EditorAction", name = "Bounce+Replace Regions",
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license = "MIT",
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author = "Robin Gareus",
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email = "robin@gareus.org",
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site = "http://gareus.org",
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description = [[Bounce selected regions with processing and replace region]]
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}
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function factory (params) return function ()
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-- there is currently no direct way to find the track
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-- corresponding to a [selected] region
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function find_track_for_region (region_id)
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for route in Session:get_tracks():iter() do
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local track = route:to_track();
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local pl = track:playlist ()
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if not pl:region_by_id (region_id):isnil () then
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return track
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end
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end
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assert (0); -- can't happen, region must be in a playlist
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end
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-- get selection
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-- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:Selection
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local sel = Editor:get_selection ()
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-- prepare undo operation
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Session:begin_reversible_command ("Bounce+Replace Regions")
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local add_undo = false -- keep track if something has changed
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-- Iterate over Regions part of the selection
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-- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:RegionSelection
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for r in sel.regions:regionlist ():iter () do
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-- each of the items 'r' is a
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-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Region
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local track = find_track_for_region (r:to_stateful():id())
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local playlist = track:playlist ()
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-- clear existing changes, prepare "diff" of state for undo
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playlist:to_stateful ():clear_changes ()
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-- bounce the region with processing
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local region = track:bounce_range (r:position (), r:position() + r:length (), ARDOUR.InterThreadInfo (), track:main_outs (), false);
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-- remove old region..
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playlist:remove_region (r);
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-- ..and add the newly bounced one
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playlist:add_region (region, r:position (), 1, false)
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-- create a diff of the performed work, add it to the session's undo stack
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-- and check if it is not empty
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if not Session:add_stateful_diff_command (playlist:to_statefuldestructible ()):empty () then
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add_undo = true
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end
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end
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-- all done, commit the combined Undo Operation
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if add_undo then
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-- the 'nil' Command here mean to use the collected diffs added above
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Session:commit_reversible_command (nil)
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else
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Session:abort_reversible_command ()
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end
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end end
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