# Bryan Schumaker (8/7/2010)

import libsaria

gst    = None
player = None
time   = None
bus    = None
length = None

# An init function for faster startup
def init():
	global gst
	global player
	global time
	import gst

	player = gst.element_factory_make("playbin2", "player")
	time = gst.Format(gst.FORMAT_TIME)
	bus = player.get_bus()
	bus.add_signal_watch()
	bus.connect("message", on_message)


def reset():
	global player
	global length
	player.set_state(gst.STATE_NULL)
	length = None


def on_message(bus, message):
	if message.type == gst.MESSAGE_EOS:
		libsaria.music.end_of_song()


def on_quit():
	global player
	player.set_state(gst.STATE_NULL)
libsaria.event.invite("PREQUIT", on_quit)


def get_state():
	global player
	return player.get_state()[1]


# Returns the length of the song in ms
def duration():
	global length
	global player
	global time
	if get_state() == gst.STATE_NULL:
		return 0
	if length == None:
		length = player.query_duration(time)[0]
	return length


def position():
	global time
	global player
	return player.query_position(time)[0]


def load(file):
	global gst
	global player
	player.set_state(gst.STATE_NULL)
	player.set_property("uri", "file://%s"%file)
	player.set_state(gst.STATE_PAUSED)
	return file


def play():
	global gst
	global player
	player.set_state(gst.STATE_PLAYING)


def pause():
	global gst
	global player
	player.set_state(gst.STATE_PAUSED)


def stop():
	pause()
	seek(0)


def seek(prcnt):
	global player
	global time
	global gst
	spot = duration() * prcnt
	player.seek_simple(time, gst.SEEK_FLAG_FLUSH, spot)


def volume(prcnt):
	global player
	player.set_property("volume", prcnt)