User icon.png as Audio

IconPNGAsAudio.gd

tool
extends AudioStreamPlayer

# "We were so preoccupied with whether or not we could, we didn’t stop to think if we should."

var sample_hz = 8000.0 # Adjust and enjoy the sound of nightmares

var playback: AudioStreamPlayback = null # Actual playback stream, assigned in _init().
var _stream = PoolRealArray()
var stream_pos = 0
var stream_len = 0


func _fill_buffer():
	
	var to_fill = playback.get_frames_available()
	while to_fill > 0:
		playback.push_frame(Vector2(_stream[stream_pos],_stream[-stream_pos]))
		stream_pos = wrapi(stream_pos+1, 0, stream_len)
		to_fill -= 1


func _process(_delta):
	_fill_buffer()


func _init():
	stream = AudioStreamGenerator.new()
	stream.mix_rate = sample_hz # Setting mix rate is only possible before play().
	load_icon_as_audio()
	playback = get_stream_playback()
	_fill_buffer() # Prefill, do before play() to avoid delay.
	
	
func load_icon_as_audio():
	var file = File.new()
	file.open("res://icon.png", File.READ)
	while not file.eof_reached():
		_stream.append( (file.get_8() - 128) /128.0 )
	stream_len = _stream.size()
	file.close()

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