Question

我正在尝试使用python-vlc lib构建一个简单的媒体播放器。另外，我试图在一个单独的线程中运行它，以便可以同时运行其他任务。

现在，我很难让播放器实际播放整个播放列表。但是现在，一旦播放列表结束，就会触发线程事件，这使我无法在实际播放期间访问播放器来执行诸如“向前跳过一首歌曲”，“设置音量”之类的任务。

我对线程不是很熟悉，因此想知道设置这一最佳解决方案是什么。

# import built-in modules
from itertools import count
import os
from threading import Event, Thread

# import third-party modules
import vlc


class Player:

    def __init__(self):
        self.played = count()
        self.finished = Event()
        vlc_instance = vlc.Instance()
        self.media_player = vlc_instance.media_player_new()
        self.media_list = vlc_instance.media_list_new()

        self.media_list_player = vlc_instance.media_list_player_new()
        self.media_list_player.set_media_player(self.media_player)

        event_manager = self.media_player.event_manager()
        event_manager.event_attach(vlc.EventType.MediaPlayerEndReached, self.end_reached)

    def add_media(self, filename):
        self.media_list.add_media(filename)

    def play(self):
        self.media_list_player.set_media_list(self.media_list)
        self.media_list_player.play()

    def previous(self):
        self.media_list_player.previous()

    def next(self):
        self.media_list_player.next()

    def wait(self):
        self.finished.wait()

    def end_reached(self, event):
        if event.type.value == vlc.EventType.MediaPlayerEndReached.value:
            if next(self.played) == self.media_list.count():
                self.finished.set()


def start_up(directory):
    player = Player()

    for track in os.listdir(directory):
        path = os.path.join(directory, track)
        player.add_media(path)
    player.play()

    #this keeps the thread alive until the event is set to True
    player.wait()


if __name__ == '__main__':
    directory = '/path/to/music/folder'
    x = Thread(target=start_up, args=[directory])
    x.start()

线程执行期间访问播放器实例

0 个答案: