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ardour { ["type"] = "EditorAction", name = "Tom's Loop",
license = "MIT",
author = "Ardour Team",
description = [[Bounce the loop-range of all non muted audio tracks, paste N times at playhead]]
}
function action_params ()
return { ["times"] = { title = "Number of copies to add", default = "1"}, }
end
function factory (params) return function ()
-- get options
local p = params or {}
local n_paste = tonumber (p["times"] or 1)
assert (n_paste > 0)
local proc = ARDOUR.LuaAPI.nil_proc () -- bounce w/o processing
local itt = ARDOUR.InterThreadInfo () -- bounce progress info (unused)
local loop = Session:locations ():auto_loop_location ()
local playhead = Session:transport_frame ()
-- make sure we have a loop, and the playhead (edit point) is after it
if not loop then
print ("A Loop range must be set.")
goto errorout
end
assert (loop:start () < loop:_end ())
if loop:_end () >= playhead then
print ("The Playhead (paste point) needs to be after the loop.")
goto errorout
end
-- prepare undo operation
Session:begin_reversible_command ("Tom's Loop")
local add_undo = false -- keep track if something has changed
-- prefer solo'ed tracks
local soloed_track_found = false
for route in Session:get_tracks ():iter () do
if route:soloed () then
soloed_track_found = true
break
end
end
-- count regions that are bounced
local n_regions_created = 0
-- loop over all tracks in the session
for route in Session:get_tracks ():iter () do
if soloed_track_found then
-- skip not soloed tracks
if not route:soloed () then
goto continue
end
end
-- skip muted tracks (also applies to soloed + muted)
if route:muted () then
goto continue
end
-- at this point the track is either soloed (if at least one track is soloed)
-- or not muted (if no track is soloed)
-- test if bouncing is possible
local track = route:to_track ()
if not track:bounceable (proc, false) then
goto continue
end
-- only audio tracks
local playlist = track:playlist ()
if playlist:data_type ():to_string () ~= "audio" then
goto continue
end
-- check if there is at least one unmuted region in the loop-range
local reg_unmuted_count = 0
for reg in playlist:regions_touched (loop:start (), loop:_end ()):iter () do
if not reg:muted() then
reg_unmuted_count = reg_unmuted_count + 1
end
end
if reg_unmuted_count < 1 then
goto continue
end
-- clear existing changes, prepare "diff" of state for undo
playlist:to_stateful ():clear_changes ()
-- do the actual work
local region = track:bounce_range (loop:start (), loop:_end (), itt, proc, false)
playlist:add_region (region, playhead, n_paste, false)
n_regions_created = n_regions_created + 1
-- 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
::continue::
end
--advance playhead so it's just after the newly added regions
if n_regions_created > 0 then
Session:request_locate((playhead + loop:length() * n_paste),false)
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
print ("bounced " .. n_regions_created .. " regions from loop range (" .. loop:length() .. " frames) to playhead @ frame # " .. playhead)
::errorout::
end end
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