mediagoblin/process_media/__init__.py

   1 # GNU MediaGoblin -- federated, autonomous media hosting
   2 # Copyright (C) 2011 Free Software Foundation, Inc
   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 Image
  18 import mongokit
  19 from celery.task import task
  20
  21 from mediagoblin.globals import database, queue_store, public_store
  22
  23
  24 THUMB_SIZE = 200, 200
  25
  26
  27 @task
  28 def process_media_initial(media_id):
  29     entry = database.MediaEntry.one(
  30         {'_id': mongokit.ObjectId(media_id)})
  31
  32     queued_filepath = entry['queued_media_file']
  33     queued_file = queue_store.get_file(queued_filepath, 'r')
  34
  35     with queued_file:
  36         thumb = Image.open(queued_file)
  37         thumb.thumbnail(THUMB_SIZE, Image.ANTIALIAS)
  38
  39         thumb_filepath = public_store.get_unique_filepath(
  40             ['media_entries',
  41              unicode(entry['_id']),
  42              'thumbnail.jpg'])
  43
  44         with public_store.get_file(thumb_filepath, 'w') as thumb_file:
  45             thumb.save(thumb_file, "JPEG")
  46
  47     # we have to re-read because unlike PIL, not everything reads
  48     # things in string representation :)
  49     queued_file = queue_store.get_file(queued_filepath, 'rb')
  50
  51     with queued_file:
  52         main_filepath = public_store.get_unique_filepath(
  53             ['media_entries',
  54              unicode(entry['_id']),
  55              queued_filepath[-1]])
  56
  57         with public_store.get_file(main_filepath, 'wb') as main_file:
  58             main_file.write(queued_file.read())
  59
  60     queue_store.delete_file(queued_filepath)
  61     media_files_dict = entry.setdefault('media_files', {})
  62     media_files_dict['thumb'] = thumb_filepath
  63     media_files_dict['main'] = main_filepath
  64     entry['state'] = u'processed'
  65     entry.save()