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Example Lua script to perform action at specific wallclock time

This commit is contained in:
Robin Gareus 2018-03-18 15:56:06 +01:00
parent 5e2d5db6c7
commit 2092934721

37
scripts/_cron.lua Normal file
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ardour {
["type"] = "EditorHook",
name = "Timed Event Example",
author = "Ardour Lua Task Force",
description = "Perform actions at specific wallclock time, example record",
}
function signals ()
return LuaSignal.Set():add ({[LuaSignal.LuaTimerDS] = true})
end
function factory ()
local _last_time = 0
return function (signal, ref, ...)
-- calculate seconds since midnight
function hhmmss (hh, mm, ss) return hh * 3600 + mm * 60 + ss end
-- current seconds since midnight UTC
-- (unix-time is UTC, no leap seconds, a day always has 86400 sec)
local now = os.time () % 86400
-- event at 09:30:00 UTC (here: rec-arm + roll)
if (now >= hhmmss (09, 30, 00) and _last_time < hhmmss (09, 30, 00)) then
Session:maybe_enable_record (false)
Session:request_transport_speed (1.0, true)
end
-- event at 09:32:00 UTC (here: rec-stop)
if (now >= hhmmss (09, 32, 00) and _last_time < hhmmss (09, 32, 00)) then
Session:disable_record (false, false)
Session:request_transport_speed (0.0, true)
end
_last_time = now
end
end