looper

-- looper.lua
-- Repeatedly play a tuple file with midi_player
-- Usage: looper <tuple_file> [speaker_side] [volume]

local args = { ... }
if #args < 1 then
  print("Usage: looper <tuple_file> [speaker_side] [volume]")
  return
end

local tuple_file = args[1]
local speaker_side = args[2] or "right"
local volume = args[3] or "2.0"

while true do
  print("Starting playback of " .. tuple_file)
  -- Run midi_player; this blocks until the song is done
  local ok = shell.run("midi_player", tuple_file, speaker_side, volume)
  if not ok then
    print("Error running midi_player, stopping looper.")
    break
  end
  print("Song complete, restarting...")
end