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 import gi
  21 gi.require_version('Gst', '1.0')
  22 from gi.repository import GObject, Gst, GstPbutils, GLib
  23 Gst.init(None)
  24
  25 _log = logging.getLogger(__name__)
  26
  27
  28 def media_type_warning():
  29     if mg_globals.app_config.get('media_types'):
  30         _log.warning('Media_types have been converted to plugins. Old'
  31                      ' media_types will no longer work. Please convert them'
  32                      ' to plugins to continue using them.')
  33
  34
  35 def discover(src):
  36     '''
  37     Discover properties about a media file
  38     '''
  39     _log.info('Discovering {0}...'.format(src))
  40     uri = 'file://{0}'.format(src)
  41     discoverer = GstPbutils.Discoverer.new(60 * Gst.SECOND)
  42     try:
  43         info = discoverer.discover_uri(uri)
  44     except GLib.GError as e:
  45         _log.warning(u'Exception: {0}'.format(e))
  46         info = None
  47     _log.info('Done')
  48     return info