53 lines
1.7 KiB
Lua
53 lines
1.7 KiB
Lua
ardour { ["type"] = "Snippet", name = "Ducks" }
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function factory (params) return function ()
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local chan_out = 2
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if not Session:master_out():isnil() then
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chan_out = Session:master_out():n_inputs ():n_audio ()
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end
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-- create two mono tracks
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local tl = Session:new_audio_track (1, chan_out, nil, 2, "Ducks", ARDOUR.PresentationInfo.max_order, ARDOUR.TrackMode.Normal, true)
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for t in tl:iter() do
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t:set_strict_io (true)
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-- switch tracks to monitor input
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t:monitoring_control():set_value (ARDOUR.MonitorChoice.MonitorInput, PBD.GroupControlDisposition.NoGroup)
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end
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local src = tl:front ();
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local dst = tl:back ();
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assert (not src:isnil() and not dst:isnil())
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-- add "ACE Compressor" to target track
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local p = ARDOUR.LuaAPI.new_plugin (Session, "urn:ardour:a-comp", ARDOUR.PluginType.LV2, "")
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assert (not p:isnil ())
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dst:add_processor_by_index (p, 0, nil, true)
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ARDOUR.LuaAPI.set_processor_param (p, 1, 300) -- 300ms release time
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ARDOUR.LuaAPI.set_processor_param (p, 2, 4) -- 4dB Knee
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ARDOUR.LuaAPI.set_processor_param (p, 3, 7) -- ratio 1:7
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ARDOUR.LuaAPI.set_processor_param (p, 4, -25) -- threshold -20dBFS
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ARDOUR.LuaAPI.set_processor_param (p, 9, 1) -- enable sidechain
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-- add Send to src track before the fader
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local s = ARDOUR.LuaAPI.new_send (Session, src, src:amp ())
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assert (not s:isnil ())
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-- mark as sidechain send
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local send = s:to_send()
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send:set_remove_on_disconnect (true)
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-- now connect send to plugin's sidechain input
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local src_io = send:output()
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-- ACE Compressor already has a sidechain, and sidechain
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-- pin connected. Other plugins see "plugin channel-map dev"
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-- snippet how to change plugin pinout.
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local dst_io = p:to_plugininsert ():sidechain_input ()
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src_io:nth(0):connect (dst_io:nth (0):name ())
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end end
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