play sound w/ redstone

local dfpwm = require("cc.audio.dfpwm")
local speaker = peripheral.find("speaker")

local decoder = dfpwm.make_decoder()
while true
do
    for chunk in io.lines("hum.dfpwm", 16 * 1024) do
        if redstone.getInput("front") then
            local buffer = decoder(chunk)

            while not speaker.playAudio(buffer) do
                os.pullEvent("speaker_audio_empty")
            end
        else
            os.sleep(0.1)
            break
        end
    end
end