音樂不在Gtk3/Gstreamer應用中播放

Question

我已經看過本教程，http://lzone.de/media+player+with+gstreamer+and+pygi，關於如何使用Gtk3和Gstreamer從網絡流式傳輸音頻。我有工作代碼減去實際音樂播放的能力。我需要幫助，我是製作應用程序的新手，但我認爲這些問題源於self.player.set_property（'uri'，self.uri）沒有從網址獲取音樂的神奇功能self.uri ='http://mp3channels.webradio.antenne.de/chillout 「

這裏是我的源：

import sys, os, pygtk 
import gi 
gi.require_version('Gst', '1.0') 
from gi.repository import GObject 
from gi.repository import GLib 
from gi.repository import Gtk 
from gi.repository import Gst 
GObject.threads_init() 
Gst.init(None) 

類PlaybackInterface（）：

def __init__(self): 
    self.playing = False 
# A free example sound track 
    self.uri = 'http://mp3channels.webradio.antenne.de/chillout' 
# GTK window and widgets 
    self.window = Gtk.Window() 
    self.window.set_size_request(300,50) 
    vbox = Gtk.Box(Gtk.Orientation.HORIZONTAL, 0) 
    vbox.set_margin_top(3) 
    vbox.set_margin_bottom(3) 
    self.window.add(vbox) 
    self.playButtonImage = Gtk.Image() 
    self.playButtonImage.set_from_stock("gtk-media-play", Gtk.IconSize.BUTTON) 
    self.playButton = Gtk.Button.new() 
    self.playButton.add(self.playButtonImage) 
    self.playButton.connect("clicked", self.playToggled) 
    Gtk.Box.pack_start(vbox, self.playButton, False, False, 0) 
    self.slider = Gtk.HScale() 
    self.slider.set_margin_left(6) 
    self.slider.set_margin_right(6) 
    self.slider.set_draw_value(False) 
    self.slider.set_range(0, 100) 
    self.slider.set_increments(1, 10) 
    Gtk.Box.pack_start(vbox, self.slider, True, True, 0) 
    self.label = Gtk.Label(label='0:00') 
    self.label.set_margin_left(6) 
    self.label.set_margin_right(6) 
    Gtk.Box.pack_start(vbox, self.label, False, False, 0) 
    self.window.show_all() 

    # GStreamer Setup 
    self.player = Gst.ElementFactory.make('playbin', None) 
    self.player.set_property('uri', self.uri) 
    # Set properties 
    # bus = self.player.get_bus() 
    # bus.connect("message", self.on_message) 
    # self.player.connect("about-to-finish", self.on_finished) 

def on_message(self, bus, message): 
    t = message.type 
    if t == Gst.Message.EOS: 
     self.player.set_state(Gst.State.NULL) 
     self.playing = False 
    elif t == Gst.Message.ERROR: 
     self.player.set_state(Gst.State.NULL) 
     err, debug = message.parse_error() 
     print "Error: %s" % err, debug 
     self.playing = False 

    self.updateButtons() 

def on_finished(self, player): 
    self.playing = False 
    self.slider.set_value(0) 
    self.label.set_text("0:00") 
    self.updateButtons() 

def play(self): 
    self.player.set_state(Gst.State.PLAYING) 
    GObject.timeout_add(1000, self.updateSlider) 

def stop(self): 
    self.player.set_state(Gst.State.NULL) 

def playToggled(self, w): 
    self.slider.set_value(0) 
    self.label.set_text("0:00") 

    if(self.playing == False): 
     self.play() 
    else: 
     self.stop() 

    self.playing=not(self.playing) 
    self.updateButtons() 

def updateSlider(self): 

    if(self.playing == False): 
     return False # cancel timeout 
     try: 
      if self.IS_GST010: 
       nanosecs = self.player.query_position(Gst.Format.TIME)[2] 
       duration_nanosecs = self.player.query_duration(Gst.Format.TIME)[2] 
      else: 
       nanosecs = self.player.query_position(Gst.Format.TIME)[1] 
       duration_nanosecs = self.player.query_duration(Gst.Format.TIME)[1] 
         # block seek handler so we don't seek when we set_value() 
         # self.slider.handler_block_by_func(self.on_slider_change) 
       duration = float(duration_nanosecs)/Gst.SECOND 
       position = float(nanosecs)/Gst.SECOND 
       self.slider.set_range(0, duration) 
       self.slider.set_value(position) 
       self.label.set_text ("%d" % (position/60) + ":%02d" % (position % 60)) 

     except Exception as e: 
# pipeline must not be ready and does not know position 
      print e 
      pass 
     return True 

def updateButtons(self): 
    if(self.playing == False): 
     self.playButtonImage.set_from_stock("gtk-media-play", Gtk.IconSize.BUTTON) 
    else: 
     self.playButtonImage.set_from_stock("gtk-media-stop", Gtk.IconSize.BUTTON) 



player = PlaybackInterface() 
Gtk.main() 

Answer 1

的Gstreamer有很大的依賴性。窺探鏈接https://raw.githubusercontent.com/Psychtoolbox-3/Psychtoolbox-3/beta/Psychtoolbox/PsychDocumentation/GStreamer.m。我將工作代碼上傳到我的Github帳戶（至少在我的機器上），它將播放和停止來自http源的音頻流。 https://github.com/jchiefelk/musicplayer