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ardour { ["type"] = "dsp", name = "Lua FIR Convolver", license = "MIT", author = "Ardour Lua Task Force", description = [[Another simple DSP example]] }
function dsp_ioconfig () return
{
{ audio_in = 1, audio_out = 1},
}
end
local conv
function dsp_configure (ins, outs)
conv = ARDOUR.DSP.Convolution (Session, ins:n_audio (), outs:n_audio ())
local cmem = ARDOUR.DSP.DspShm (4)
cmem:clear ()
local d = cmem:to_float (0):array()
d[1] = .5
d[2] = .5
local ar = ARDOUR.AudioRom.new_rom (cmem:to_float (0), 4)
conv:add_impdata (0, 0, ar, 1.0, 0, 0, 0, 0)
cmem:to_float (0):set_table({1, -1, 0, 0}, 4)
ar = ARDOUR.AudioRom.new_rom (cmem:to_float (0), 3)
conv:add_impdata (0, 0, ar, 1.0, 0, 0, 0, 0)
conv:restart ()
collectgarbage ()
end
function dsp_latency ()
return conv:latency()
end
function dsp_runmap (bufs, in_map, out_map, n_samples, offset)
conv:run (bufs, in_map, out_map, n_samples, offset)
end
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