mediagoblin/media_types/video/util.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
  17 import logging
  18
  19 from mediagoblin import mg_globals as mgg
  20
  21 _log = logging.getLogger(__name__)
  22
  23
  24 def skip_transcode(metadata, size):
  25     '''
  26     Checks video metadata against configuration values for skip_transcode.
  27
  28     Returns True if the video matches the requirements in the configuration.
  29     '''
  30     config = mgg.global_config['plugins']['mediagoblin.media_types.video']\
  31             ['skip_transcode']
  32
  33     medium_config = mgg.global_config['media:medium']
  34
  35     _log.debug('skip_transcode config: {0}'.format(config))
  36     tags = metadata.get_tags()
  37     if config['mime_types'] and tags.get_string('mimetype')[0]:
  38         if not tags.get_string('mimetype')[1] in config['mime_types']:
  39             return False
  40
  41     if config['container_formats'] and tags.get_string('container-format')[0]:
  42         if not (tags.get_string('container-format')[1] in
  43                 config['container_formats']):
  44             return False
  45
  46     if config['video_codecs']:
  47         for video_info in metadata.get_video_streams():
  48             if not (video_info.get_tags().get_string('video-codec')[1] in
  49                     config['video_codecs']):
  50                 return False
  51
  52     if config['audio_codecs']:
  53         for audio_info in metadata.get_audio_streams():
  54             if not (audio_info.get_tags().get_string('audio-codec')[1] in
  55                     config['audio_codecs']):
  56                 return False
  57
  58     if config['dimensions_match']:
  59         for video_info in metadata.get_video_streams():
  60             if not video_info.get_height() <= size[1]:
  61                 return False
  62             if not video_info.get_width() <= size[0]:
  63                 return False
  64
  65     return True