Python GST分段错误

Question

我想创建一个播放器类来播放GST音乐。 这是代码：

from gi.repository import GObject
GObject.threads_init()
import gst

class PlayerControl:
    def __init__(self, main_window):

        self.player = gst.element_factory_make("playbin2", "player")
        self.sink = gst.element_factory_make("autoaudiosink", "player Output")
        self.videosink= gst.element_factory_make("fakesink", "player fake Output")
        self.player.set_property("video-sink", self.videosink)
        self.player.set_property("audio-sink", self.sink)
        self.player_bus = self.player.get_bus()
        self.player_bus.add_signal_watch()
        self.player_bus.connect("message", self.on_messages)
        self.player.connect("about-to-finish", self.on_finish)
        self.main_window = main_window
        self.main_window.seek_bar.connect("value-changed", self.on_slider_changed)
        self.main_window.seek_bar.set_range(0, 100)
        self.playing = False

    def on_messages(self, bus, message):
        print(message)


    def play(self, file):
        self.playing = True
        self.player.set_state(gst.STATE_READY)
        self.player.set_property("uri", "file:///"+str(file)) # örnek olsun diye
        self.player.set_state(gst.STATE_PLAYING)
        GObject.timeout_add(100, self.update_slider)
    [...]

我从另一个这样的班级叫这来播放声音：

from file import PlayerControl
class PlayerExample():
    def __init__( self ):
    self.player_gst = PlayerControl(self)
    [...]
    def play(self, file):
        self.playing = True
        self.player.set_state(gst.STATE_READY)
        self.player.set_property("uri", "file:///"+str(file))
        self.player.set_state(gst.STATE_PLAYING)
        GObject.timeout_add(100, self.update_slider)
    [...]

我已连接一个gtk按钮以播放功能。 当我单击按钮时，我遇到了没有任何信息的segmentation fault 。 另外，如果我从PlayerControl类中删除self.player_bus.add_signal_watch()和self.player.connect("about-to-finish", self.on_finish)行，则它可以正常工作并播放声音，但我需要使用“即将完成”信号。 为什么不起作用？

Answer 1

GObject.threads_init()无法与pygst“ 0.10”配合使用，您需要添加：

import gobject
gobject.threads_init()
import gst

顶级玩家。 或使用Gst-1.0 https://wiki.ubuntu.com/Novacut/GStreamer1.0