90 lines
2.7 KiB
Lua
90 lines
2.7 KiB
Lua
ardour { ["type"] = "Snippet", name = "Tom's Loop",
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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 the loop-range of all non muted audio tracks, paste N times at playhead]]
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}
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-- unused ; cfg parameter for ["type"] = "EditorAction"
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function action_params ()
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return { ["times"] = { title = "Number of copies to add", default = "1"}, }
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end
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function factory () return function ()
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-- get options
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local p = params or {}
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local npaste = p["times"] or 1
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assert (npaste > 0)
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local proc = ARDOUR.LuaAPI.nil_proc () -- bounce w/o processing
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local itt = ARDOUR.InterThreadInfo () -- bounce progress info (unused)
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local loop = Session:locations ():auto_loop_location ()
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local playhead = Session:transport_frame ()
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-- make sure we have a loop, and the playhead (edit point) is after it
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-- TODO: only print an error and return
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-- TODO: use the edit-point (not playhead) ? maybe.
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if not loop then
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print ("A Loop range must be set.")
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goto errorout
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end
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assert (loop:start () < loop:_end ())
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if loop:_end () >= playhead then
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print ("The Playhead (paste point) needs to be after the loop.")
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goto errorout
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end
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-- prepare undo operation
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Session:begin_reversible_command ("Tom's Loop")
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local add_undo = false -- keep track if something has changed
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for route in Session:get_tracks ():iter () do
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-- skip muted tracks
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if route:muted () then
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goto continue
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end
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-- test if bouncing is possible
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local track = route:to_track ()
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if not track:bounceable (proc, false) then
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goto continue
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end
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-- only audio tracks
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local playlist = track:playlist ()
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if playlist:data_type ():to_string () ~= "audio" then
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goto continue
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end
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-- check if there are any regions in the loop-range of this track
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local range = Evoral.Range (loop:start (), loop:_end ())
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if playlist:regions_with_start_within (range):empty ()
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and playlist:regions_with_end_within (range):empty () then
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goto continue
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end
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-- clear existing changes, prepare "diff" of state
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playlist:to_stateful ():clear_changes ()
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-- do the actual work
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local region = track:bounce_range (loop:start (), loop:_end (), itt, proc, false)
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playlist:add_region (region, playhead, npaste, 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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::continue::
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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' Commend 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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::errorout::
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end end
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