nxtv music label plugin

from nebula import *

class Plugin(PlayoutPlugin):
    def on_init(self):
        self.id_layer = 92
        self.fname = os.path.join(self.playout_dir, "cg_music_label.png")
        print (self.fname)
        self.show_fx = "PUSH 15 EaseInOutBack RIGHT"
        self.hide_fx = "PUSH 15 EaseInOutBack LEFT"

    def on_change(self):
        if self.current_asset["id_folder"] != 4:
            self.query("CLEAR {}".format(self.layer()))
            self.tasks = []
            return

        if not cg_download(
                    self.fname,
                    "music_label",
                    title=self.current_asset["title"],
                    artist=self.current_asset["role/performer"]
                ):
            return

        self.tasks = [
                    self.begin_show,
                    self.begin_hide,
                    self.end_show,
                    self.end_hide
                ]


    def begin_show(self):
        if self.position < 1:
            return False
        self.query(
                "PLAY {} {} {}".format(
                    self.layer(),
                    get_base_name(self.fname),
                    self.show_fx
                    )
                )
        return True

    def begin_hide(self):
        if self.position < 10:
            return False
        self.query(
                "PLAY {} EMPTY {}".format(
                    self.layer(),
                    self.hide_fx
                    )
                )
        return True

    def end_show(self):
        if self.position < self.duration - 10:
            return False
        self.query(
                "PLAY {} {} {}".format(
                    self.layer(),
                    get_base_name(self.fname),
                    self.show_fx
                    )
                )
        return True

    def end_hide(self):
        if self.position < self.duration - 2:
            return False
        self.query(
                "PLAY {} EMPTY {}".format(
                    self.layer(),
                    self.hide_fx
                    )
                )
        return True