我已经看过本教程http://lzone.de/media+player+with+gstreamer+and+pygi,关于如何使用Gtk3和Gstreamer从网络流式传输音频。我的工作代码减去了播放实际音乐的能力。我需要帮助,我是制作应用程序的新手,但我认为这些问题源于self.player.set_property('uri',self.uri)没有从魔法中获取音乐的自我魔法自我。 {3}}“
这是我的来源:
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)
类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()
答案 0 :(得分:0)
Gstreamer有很多依赖。窥视链接https://raw.githubusercontent.com/Psychtoolbox-3/Psychtoolbox-3/beta/Psychtoolbox/PsychDocumentation/GStreamer.m。我在我的Github帐户(至少在我的机器上)上传了工作代码,该帐户将播放和停止来自http源的音频流。 https://github.com/jchiefelk/musicplayer