/usr/share/sugar/activities/Jukebox.activity/player.py is in sugar-jukebox-activity 32-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | # This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA
# Copyright (C) 2013 Manuel Kaufmann <humitos@gmail.com>
import logging
from gi.repository import Gst
from gi.repository import GObject
# Needed for window.get_xid(), xvimagesink.set_window_handle(),
# respectively:
from gi.repository import GdkX11, GstVideo
# Avoid "Fatal Python error: GC object already tracked"
# http://stackoverflow.com/questions/7496629/gstreamer-appsrc-causes-random-crashes
# GObject.threads_init()
# Initialize GStreamer
Gst.init(None)
class GstPlayer(GObject.GObject):
__gsignals__ = {
'error': (GObject.SignalFlags.RUN_FIRST, None, [str, str]),
'eos': (GObject.SignalFlags.RUN_FIRST, None, []),
'play': (GObject.SignalFlags.RUN_FIRST, None, []),
}
def __init__(self):
GObject.GObject.__init__(self)
self.playing = False
self.error = False
# Create GStreamer pipeline
self.pipeline = Gst.Pipeline()
# Create bus to get events from GStreamer pipeline
self.bus = self.pipeline.get_bus()
self.bus.add_signal_watch()
self.bus.connect('message::eos', self.__on_eos_message)
self.bus.connect('message::error', self.__on_error_message)
# This is needed to make the video output in our DrawingArea
self.bus.enable_sync_message_emission()
self.bus.connect('sync-message::element', self.__on_sync_message)
# Create GStreamer elements
self.player = Gst.ElementFactory.make('playbin', None)
self.pipeline.add(self.player)
def init_view_area(self, videowidget):
videowidget.realize()
self.videowidget = videowidget
self.videowidget_xid = videowidget.get_window().get_xid()
def __on_error_message(self, bus, msg):
self.stop()
self.playing = False
self.error = True
err, debug = msg.parse_error()
self.emit('error', err, debug)
def __on_eos_message(self, bus, msg):
logging.debug('SIGNAL: eos')
self.playing = False
self.emit('eos')
def __on_sync_message(self, bus, msg):
if msg.get_structure().get_name() == 'prepare-window-handle':
msg.src.set_window_handle(self.videowidget_xid)
def set_uri(self, uri):
self.pipeline.set_state(Gst.State.READY)
# gstreamer needs the 'file://' prefix
uri = 'file://' + uri
logging.debug('URI: %s', uri)
self.player.set_property('uri', uri)
def query_position(self):
"Returns a (position, duration) tuple"
p_success, position = self.player.query_position(Gst.Format.TIME)
d_success, duration = self.player.query_duration(Gst.Format.TIME)
return (p_success and d_success, position, duration)
def seek(self, location):
"""
@param location: time to seek to, in nanoseconds
"""
logging.debug('Seek: %s ns', location)
self.pipeline.seek_simple(Gst.Format.TIME,
Gst.SeekFlags.FLUSH | Gst.SeekFlags.KEY_UNIT,
location)
def pause(self):
logging.debug("pausing player")
self.pipeline.set_state(Gst.State.PAUSED)
self.playing = False
def play(self):
logging.debug("playing player")
self.pipeline.set_state(Gst.State.PLAYING)
self.playing = True
self.error = False
self.emit('play')
def stop(self):
self.playing = False
self.pipeline.set_state(Gst.State.NULL)
logging.debug("stopped player")
def get_state(self, timeout=1):
return self.player.get_state(timeout=timeout)
def is_playing(self):
return self.playing
def playing_video(self):
return self.player.props.n_video > 0
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