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