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ardour { ["type"] = "EditorAction", name = "Fan Out Instrument",
license = "MIT",
author = "Ardour Team",
description = [[Create Busses for every Instrument Output on selected Tracks]]
}
function factory () return function ()
local outputs = 2
local mst = Session:master_out();
if not mst:isnil() then
outputs = mst:n_inputs():n_audio()
end
mst = nil -- drop reference
local sel = Editor:get_selection ()
for r in sel.tracks:routelist ():iter () do
local proc = r:the_instrument ():to_insert()
if proc:isnil () then
print ("Track", r:name(), "does not have an instrument plugin")
goto next
end
local plugin = proc:plugin(0);
if (r:n_outputs ():n_audio() ~= proc:output_streams():n_audio()) then
print ("Instrument ", proc:name(), "outputs", proc:output_streams():n_audio(), "do not match track outputs", r:n_outputs ():n_audio())
goto next
end
-- collect port-group information, count target bus width
local targets = {}
for i = 1, proc:output_streams():n_audio() do
local pd = plugin:describe_io_port (ARDOUR.DataType("Audio"), false, i - 1)
local nn = proc:name() .. " " .. pd.group_name; -- TODO use track-name prefix?
targets[nn] = targets[nn] or 0
targets[nn] = targets[nn] + 1
end
if #targets < 2 then
print ("Instrument ", proc:name(), "has only 1 output bus. Nothing to fan out.")
goto next
end
-- create busses ; TODO retain order
for t,c in pairs (targets) do
local rt = Session:route_by_name (t)
if rt:isnil () then
Session:new_audio_route (c, outputs, nil, 1, t, ARDOUR.PresentationInfo.Flag.AudioBus, ARDOUR.PresentationInfo.max_order)
end
end
r:output():disconnect_all (nil)
r:panner_shell():set_bypassed (true)
-- connect the busses
for i = 1, proc:output_streams():n_audio() do
local pd = plugin:describe_io_port (ARDOUR.DataType("Audio"), false, i - 1)
local nn = proc:name() .. " " .. pd.group_name;
local rt = Session:route_by_name (nn)
assert (rt)
local op = r:output():audio (i - 1)
local ip = rt:input():audio (pd.group_channel)
op:connect (ip:name())
end
::next::
end
end end
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