279 lines
10 KiB
Lua
279 lines
10 KiB
Lua
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]]
|
||
}
|
||
|
||
-- for minimal configuration in dialogue
|
||
function action_params ()
|
||
return { ["times"] = { title = "Number of copies to add", default = "1"}, }
|
||
end
|
||
|
||
-- main method, every custom (i.e. non-ardour) method must be defined *inside* factory()
|
||
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_help();
|
||
print ("Error: A Loop range must be set.")
|
||
goto errorout
|
||
end
|
||
assert (loop:start () < loop:_end ())
|
||
if loop:_end () >= playhead then
|
||
print_help();
|
||
print ("Error: 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, 0)
|
||
|
||
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 -- for all routes
|
||
|
||
--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)
|
||
|
||
-- when this script is called as an action, the output will be printed to the ardour log window
|
||
function print_help()
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("Manual for \"Tom’s Loop\" Ardour Lua Script")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("Table of Contents")
|
||
print("")
|
||
print("1. The first test")
|
||
print("2. Using mute and solo")
|
||
print("3. Combining region clouds to a defined length")
|
||
print("")
|
||
print("Abstract: This script for Ardour (>=4.7 git) operates on the time")
|
||
print("line. It allows to copy and combine specific portions within the loop")
|
||
print("range to a later point on the time line with one single action")
|
||
print("command. Everything that can be heard within the loop range is")
|
||
print("considered for this process, namely non-muted regions on non-muted or")
|
||
print("soloed tracks that are fully or partially inside the loop range. This")
|
||
print("still sounds a bit abstract and will be more obvious with the")
|
||
print("following example cases of use.")
|
||
print("")
|
||
print("For convenience, it’s recommended to bind the script to a keyboard")
|
||
print("shortcut in order to quickly and easily access the \"Tom’s Loop\"")
|
||
print("scripted action.")
|
||
print("")
|
||
print("-Open dialog \"Script Manager\" via menu Edit/Scripted Actions/Script")
|
||
print("Manager")
|
||
print("")
|
||
print("-In tab \"Action Scripts\", select a line and press button \"Add/Set\"")
|
||
print("")
|
||
print("-In dialog \"Add Lua Action\", select \"Tom’s Loop\" from the drop down")
|
||
print("menu and hit \"Add\"")
|
||
print("")
|
||
print("-In dialog \"Set Script Parameter\" just hit \"Add\" again")
|
||
print("")
|
||
print("-Close dialog \"Script Manager\"")
|
||
print("")
|
||
print("-Open dialog \"Bindings Editor\" via menu Window/Bindings Editor")
|
||
print("")
|
||
print("-In tab \"Editor\", expand \"Editor\", look for entry \"Tom’s loop\",")
|
||
print("select it")
|
||
print("")
|
||
print("-Hit the keyboard shortcut to assign to this scripted action")
|
||
print("")
|
||
print("-Close dialog \"Key Bindings\"")
|
||
print("")
|
||
print("An alternative way to quickly access a scripted action is to enable")
|
||
print("\"Action Script Button Visibility\" in \"Preferences/GUI\".")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("1. The first test")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("-Record a short sequence of audio input or import a wave file to a")
|
||
print("track to get a region")
|
||
print("")
|
||
print("-Set a loop range inside that one region")
|
||
print("")
|
||
print("-Place the playhead after the loop range, possibly after the region,")
|
||
print("non-rolling")
|
||
print("")
|
||
print(" _L====L_ V")
|
||
print(" .____|____|____________. |")
|
||
print(" |R1__|_x__|____________| |")
|
||
print("")
|
||
print("-Call \"Tom’s Loop\" via the previously created shortcut")
|
||
print("")
|
||
print("This results in a new region created at the playhead, with the length")
|
||
print("of the loop range, containing audio of the original region. The")
|
||
print("playhead moved to the end of this new region so that subsequent calls")
|
||
print("to \"Tom’s Loop\" will result in a gap less series of regions.")
|
||
print("")
|
||
print(" _L====L_ --> V")
|
||
print(" .____|____|____________. .____|")
|
||
print(" |R1__|_x__|____________| |_x__|")
|
||
print("")
|
||
print("-Repeat calling \"Tom’s Loop\"")
|
||
print("")
|
||
print("This creates multiple copies of the loop range to line up one after")
|
||
print("each other.")
|
||
print("")
|
||
print(" _L====L_ --> V")
|
||
print(" .____|____|____________. .______________|")
|
||
print(" |R1__|_x__|____________| |_x__|_x__|_x__|")
|
||
print("")
|
||
print("-Set a different loop range and call \"Tom’s Loops\" again")
|
||
print("")
|
||
print("This will create a new region with the length of the new loop range")
|
||
print("at the playhead.")
|
||
print("")
|
||
print(" _L=======L_ --> V")
|
||
print(" ._______|_______|______. .______________________|")
|
||
print(" |R1_____|_X_____|______| |_x__|_x__|_x__|_X_____|")
|
||
print("")
|
||
print("By using \"Tom’s Loop\", the loop range - which can be easily set with")
|
||
print("the handles - and the playhead it’s easy to create any sequence of")
|
||
print("existing regions on the time line. This can be useful during the")
|
||
print("arrangement phase where macro parts of the session are already")
|
||
print("temporally layed out (in the loop) but not part of the final")
|
||
print("arrangement yet. The process is non-destructive in a sense that the")
|
||
print("existing regions layout in the current loop range won’t be touched or")
|
||
print("replaced. The newly created regions are immediately visible on the")
|
||
print("time line at the playhead position.")
|
||
print("")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("2. Using mute and solo")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("Creating a sequence of regions like described above respects the")
|
||
print("current mute and solo state of a track. Variations of the loop are")
|
||
print("thus easy to create, further supporting the arrangement process.")
|
||
print("")
|
||
print(" _L====L_ --> V")
|
||
print(" .____|____|____________. ._________. |")
|
||
print(" |R1__|_x__|____________| |_x__|_x__| |")
|
||
print(" .__|R2|_y__|________|_. |_y__|_________|")
|
||
print(" |R3___|_z__|__________| |_z__|_z__|")
|
||
print("")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("3. Combining region clouds to a defined length")
|
||
print("")
|
||
print("---------------------------------------------------------------------")
|
||
print("")
|
||
print("Multiple small regions say on a percussive track can be simplified")
|
||
print("for later arrangement keeping the temporal relations by combining")
|
||
print("them. Using \"Tom’s Loop\", the resulting regions will not only combine")
|
||
print("the regions but also automatically extend or shrink the new regions")
|
||
print("start and end point so that it is exactly of the wished length equal")
|
||
print("to the loop range.")
|
||
print("")
|
||
print("_L======================L_ --> V")
|
||
print(" | .____ .___. _____|_______. .______________________|")
|
||
print(" | |R1_| |R2_| |R3__|_______| |______________________|")
|
||
print("")
|
||
print("See also: Lua Action Bounce+Replace Regions")
|
||
print("")
|
||
end -- print_help()
|
||
::errorout::
|
||
end -- end of anonymous action script function
|
||
end -- end of script factory
|