/usr/lib/python2.7/dist-packages/radiotray/AudioPlayerGStreamer.py is in radiotray 0.7.3-6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Copyright 2009 Carlos Ribeiro
#
# This file is part of Radio Tray
#
# Radio Tray is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 1 of the License, or
# (at your option) any later version.
#
# Radio Tray is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Radio Tray. If not, see <http://www.gnu.org/licenses/>.
#
##########################################################################
import sys, os
try:
import gi
gi.require_version("Gtk", "3.0")
gi.require_version('Gst', '1.0')
except:
pass
try:
from gi.repository import Gtk
from gi.repository import GObject
GObject.threads_init()
from gi.repository import Gst
Gst.init(None)
except Exception as e:
print e
from StreamDecoder import StreamDecoder
from lib.common import USER_AGENT
from events.EventManager import EventManager
from threading import Timer
import logging
class AudioPlayerGStreamer:
def __init__(self, mediator, cfg_provider, eventManager):
self.mediator = mediator
self.eventManager = eventManager
self.decoder = StreamDecoder(cfg_provider)
self.playlist = []
self.retrying = False
self.log = logging.getLogger('radiotray')
# init player
self.log.debug("Initializing gstreamer...")
self.souphttpsrc = Gst.ElementFactory.make("souphttpsrc", "source")
self.souphttpsrc.set_property("user-agent", USER_AGENT)
self.log.debug("Loading playbin...");
self.player = Gst.ElementFactory.make("playbin", "player")
fakesink = Gst.ElementFactory.make("fakesink", "fakesink")
self.player.set_property("video-sink", fakesink)
#buffer size
if(cfg_provider._settingExists("buffer_size")):
bufferSize = int(cfg_provider.getConfigValue("buffer_size"))
if (bufferSize > 0):
self.log.debug("Setting buffer size to " + str(bufferSize))
self.player.set_property("buffer-size", bufferSize)
bus = self.player.get_bus()
bus.add_signal_watch()
bus.connect("message", self.on_message)
self.log.debug("GStreamer initialized.")
def start(self, uri):
urlInfo = self.decoder.getMediaStreamInfo(uri)
if(urlInfo is not None and urlInfo.isPlaylist()):
self.playlist = self.decoder.getPlaylist(urlInfo)
if(len(self.playlist) == 0):
self.log.warn('Received empty playlist!')
self.mediator.stop()
self.eventManager.notify(EventManager.STATION_ERROR, {'error':"Received empty stream from station"})
self.log.debug(self.playlist)
self.playNextStream()
elif(urlInfo is not None and urlInfo.isPlaylist() == False):
self.playlist = [urlInfo.getUrl()]
self.playNextStream()
else:
self.stop()
self.eventManager.notify(EventManager.STATION_ERROR, {'error':"Couldn't connect to radio station"})
def playNextStream(self):
if(len(self.playlist) > 0):
stream = self.playlist.pop(0)
self.log.info('Play "%s"', stream)
urlInfo = self.decoder.getMediaStreamInfo(stream)
if(urlInfo is not None and urlInfo.isPlaylist() == False):
self.playStream(stream)
elif(urlInfo is not None and urlInfo.isPlaylist()):
self.playlist = self.decoder.getPlaylist(urlInfo) + self.playlist
self.playNextStream()
elif(urlInfo is None):
self.playNextStream()
else:
self.stop()
self.eventManager.notify(EventManager.STATE_CHANGED, {'state':'paused'})
self.mediator.updateVolume(self.player.get_property("volume"))
def playStream(self, uri):
self.player.set_property("uri", uri)
self.player.set_state(Gst.State.PAUSED) # buffer before starting playback
def stop(self):
self.player.set_state(Gst.State.NULL)
self.eventManager.notify(EventManager.STATE_CHANGED, {'state':'paused'})
def volume_up(self, volume_increment):
self.player.set_property("volume", min(self.player.get_property("volume") + volume_increment, 1.0))
self.mediator.updateVolume(self.player.get_property("volume"))
def volume_down(self, volume_increment):
self.player.set_property("volume", max(self.player.get_property("volume") - volume_increment, 0.0))
self.mediator.updateVolume(self.player.get_property("volume"))
def on_message(self, bus, message):
t = message.type
stru = message.get_structure()
if(stru != None):
name = stru.get_name()
if(name == 'redirect'):
self.log.info("redirect received")
self.player.set_state(Gst.State.NULL)
stru.foreach(self.redirect, None)
if t == Gst.MessageType.EOS:
self.log.debug("Received MESSAGE_EOS")
self.player.set_state(Gst.State.NULL)
self.playNextStream()
elif t == Gst.MessageType.BUFFERING:
percent = message.parse_buffering()
if percent < 100:
self.log.debug("Buffering %s" % percent)
self.player.set_state(Gst.State.PAUSED)
else:
self.player.set_state(Gst.State.PLAYING)
elif t == Gst.MessageType.ERROR:
self.log.debug("Received MESSAGE_ERROR")
self.player.set_state(Gst.State.NULL)
err, debug = message.parse_error()
self.log.warn(err)
self.log.warn(debug)
if(len(self.playlist)>0):
self.playNextStream()
else:
self.eventManager.notify(EventManager.STATION_ERROR, {'error':debug})
elif t == Gst.MessageType.STATE_CHANGED:
oldstate, newstate, pending = message.parse_state_changed()
self.log.debug(("Received MESSAGE_STATE_CHANGED (%s -> %s)") % (oldstate, newstate))
if newstate == Gst.State.PLAYING:
self.retrying = False
station = self.mediator.getContext().station
self.eventManager.notify(EventManager.STATE_CHANGED, {'state':'playing', 'station':station})
elif oldstate == Gst.State.PLAYING and newstate == Gst.State.PAUSED:
self.log.info("Received PAUSE state.")
if self.retrying == False:
self.retrying = True
timer = Timer(20.0, self.checkTimeout)
timer.start()
self.eventManager.notify(EventManager.STATE_CHANGED, {'state':'paused'})
elif t == Gst.MessageType.TAG:
taglist = message.parse_tag()
#for (tag, value) in taglist.items():
# print "TT: " + tag + " - " + value
(present, value) = taglist.get_string('title')
if present:
metadata = {}
station = self.mediator.getContext().station
metadata['title'] = value
metadata['station'] = station
self.eventManager.notify(EventManager.SONG_CHANGED, metadata)
#if there is no song information, there's no point in triggering song change event
#if('artist' in taglist.keys() or 'title' in taglist.keys()):
# station = self.mediator.getContext().station
# metadata = {}
# for key in taglist.keys():
# metadata[key] = taglist[key]
# metadata['station'] = station
# self.eventManager.notify(EventManager.SONG_CHANGED, metadata)
return True
def redirect(self, name, value, data):
if(name == 'new-location'):
self.start(value)
return True
def checkTimeout(self):
self.log.debug("Checking timeout...")
if self.retrying == True:
self.log.info("Timed out. Retrying...")
uri = self.player.get_property("uri")
self.playStream(uri)
else:
self.log.info("Timed out, but not retrying anymore")
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