'enable_previews' => true,
  'preview_libreoffice_path' => '/usr/bin/libreoffice',
  'enabledPreviewProviders' =>
  array (
    0 => 'OC\\Preview\\PNG',
    1 => 'OC\\Preview\\JPEG',
    2 => 'OC\\Preview\\GIF',
    3 => 'OC\\Preview\\BMP',
    4 => 'OC\\Preview\\XBitmap',
    5 => 'OC\\Preview\\MP3',
    6 => 'OC\\Preview\\TXT',
    7 => 'OC\\Preview\\MarkDown',
    8 => 'OC\\Preview\\MSOffice2003',
    9 => 'OC\\Preview\\MSOffice2007',
    10 => 'OC\\Preview\\MSOfficeDoc',
    11 => 'OC\\Preview\\OpenDocument',
    12 => 'OC\\Preview\\PDF',
  ),