33 lines
742 B
Lua
33 lines
742 B
Lua
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ardour {
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["type"] = "EditorHook",
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name = "Varispeed Test - 100ms Callback",
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author = "Ardour Lua Task Force",
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description = "An example script that invokes a callback a every 0.1sec and modifies the transport speed",
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}
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function signals ()
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s = LuaSignal.Set()
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s:add (
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{
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[LuaSignal.LuaTimerDS] = true,
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}
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)
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return s
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end
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function factory (params)
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-- upindex variables
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local cnt = 0
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local speed = 0
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local delta = 0.01
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return function (signal, ref, ...)
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cnt = (cnt + 1) % 5 -- divide clock: every half a second
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if cnt == 0 then
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if speed < -0.25 then delta = delta * -1 end
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if speed > 0.25 then delta = delta * -1 end
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speed = speed + delta
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Session:request_transport_speed (speed)
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end
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end
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end
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