mediagoblin/media_types/tools.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
   3 #
   4 # This program is free software: you can redistribute it and/or modify
   5 # it under the terms of the GNU Affero General Public License as published by
   6 # the Free Software Foundation, either version 3 of the License, or
   7 # (at your option) any later version.
   8 #
   9 # This program is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU Affero General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU Affero General Public License
  15 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16 import logging
  17
  18 from mediagoblin import mg_globals
  19
  20 _log = logging.getLogger(__name__)
  21
  22
  23 def media_type_warning():
  24     if mg_globals.app_config.get('media_types'):
  25         _log.warning('Media_types have been converted to plugins. Old'
  26                      ' media_types will no longer work. Please convert them'
  27                      ' to plugins to continue using them.')
  28
  29
  30 def discover(src):
  31     '''
  32     Discover properties about a media file
  33     '''
  34     # GStreamer might be not installed, so it should not be initialized on
  35     # import, or an exception will be raised.
  36     import gi
  37     gi.require_version('Gst', '1.0')
  38     from gi.repository import GObject, Gst, GstPbutils, GLib
  39     Gst.init(None)
  40
  41     _log.info('Discovering {0}...'.format(src))
  42     uri = 'file://{0}'.format(src)
  43     discoverer = GstPbutils.Discoverer.new(60 * Gst.SECOND)
  44     return discoverer.discover_uri(uri)