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ardour {
["type"] = "EditorHook",
name = "Save Extra Data (instruments)",
author = "Ardour Lua Task Force",
description = "Export custom data when the session is saved",
}
-- subscribe to signals
-- http://manual.ardour.org/lua-scripting/class_reference/#LuaSignal.LuaSignal
function signals ()
s = LuaSignal.Set()
s:add ({[LuaSignal.StateSaved] = true})
return s
end
-- create callback functions
function factory () return function (signal, ...)
assert (signal == LuaSignal.StateSaved)
local all_instruments = {}
-- iterate over all routes
for r in Session:get_routes():iter() do
local proc = r:the_instrument() -- get instrument processor (if any)
if proc:isnil() then goto nextroute end -- skip tracks/busses without instrument
local pi = proc:to_insert() -- check if it's a plugin-insert
if pi:isnil() then goto nextroute end
local pp = pi:plugin (0) -- get first instance
all_instruments[r:name()] = string.format ("%s (%s)", proc:name(), pp:unique_id())
::nextroute::
end
if next (all_instruments) ~= nil then -- check if table is not empty
-- write to a file in the session-folder
file = io.open (ARDOUR.LuaAPI.build_filename (Session:path(), Session:name () .. ".instruments.txt"), "w")
for nme, nfo in pairs (all_instruments) do
file:write (nme .. ": " .. nfo)
end
file:close()
end
end end
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