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# Miro - an RSS based video player application
# Copyright (C) 2005-2008 Participatory Culture Foundation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the OpenSSL
# library.
#
# You must obey the GNU General Public License in all respects for all of
# the code used other than OpenSSL. If you modify file(s) with this
# exception, you may extend this exception to your version of the file(s),
# but you are not obligated to do so. If you do not wish to do so, delete
# this exception statement from your version. If you delete this exception
# statement from all source files in the program, then also delete it here.
import os
VIDEO_EXTENSIONS = ['.mov', '.wmv', '.mp4', '.m4v', '.ogg', '.anx', '.mpg', '.avi', '.flv', '.mpeg', '.divx', '.xvid', '.rmvb', '.mkv', '.m2v', '.ogm']
AUDIO_EXTENSIONS = ['.mp3', '.m4a', '.wma', '.mka']
MIMETYPES_EXT_MAP = {
'video/quicktime': ['.mov'],
'video/mpeg': ['.mpeg', '.mpg', '.m2v'],
'video/mp4': ['.mp4', '.m4v'],
'video/mpeg4': ['.mp4', '.m4v'],
'video/flv': ['.flv'],
'video/x-flv': ['.flv'],
'video/x-ms-wmv': ['.wmv'],
'video/x-msvideo': ['.avi'],
'video/x-matroska': ['.mkv'],
'application/ogg': ['.ogg'],
'audio/mpeg': ['.mp3'],
'audio/mp4': ['.m4a'],
'audio/x-ms-wma': ['.wma'],
'audio/x-matroska': ['.mka'],
'application/x-bittorrent': ['.torrent']
}
EXT_MIMETYPES_MAP = {}
for (mimetype, exts) in MIMETYPES_EXT_MAP.iteritems():
for ext in exts:
if ext not in EXT_MIMETYPES_MAP:
EXT_MIMETYPES_MAP[ext] = list()
EXT_MIMETYPES_MAP[ext].append(mimetype)
def isAllowedFilename(filename):
"""
Pass a filename to this method and it will return a boolean
saying if the filename represents video, audio or torrent.
"""
return isVideoFilename(filename) or isAudioFilename(filename) or isTorrentFilename(filename)
def isVideoFilename(filename):
"""
Pass a filename to this method and it will return a boolean
saying if the filename represents a video file.
"""
filename = filename.lower()
for ext in VIDEO_EXTENSIONS:
if filename.endswith(ext):
return True
return False
def isAudioFilename(filename):
"""
Pass a filename to this method and it will return a boolean
saying if the filename represents an audio file.
"""
filename = filename.lower()
for ext in AUDIO_EXTENSIONS:
if filename.endswith(ext):
return True
return False
def isTorrentFilename(filename):
"""
Pass a filename to this method and it will return a boolean
saying if the filename represents a torrent file.
"""
filename = filename.lower()
return filename.endswith('.torrent')
def isVideoEnclosure(enclosure):
"""
Pass an enclosure dictionary to this method and it will return a boolean
saying if the enclosure is a video or not.
"""
return (_hasVideoType(enclosure) or
_hasVideoExtension(enclosure, 'url') or
_hasVideoExtension(enclosure, 'href'))
def _hasVideoType(enclosure):
return ('type' in enclosure and
(enclosure['type'].startswith(u'video/') or
enclosure['type'].startswith(u'audio/') or
enclosure['type'] == u"application/ogg" or
enclosure['type'] == u"application/x-annodex" or
enclosure['type'] == u"application/x-bittorrent" or
enclosure['type'] == u"application/x-shockwave-flash"))
def _hasVideoExtension(enclosure, key):
from miro import download_utils
if key in enclosure:
elems = download_utils.parseURL(enclosure[key], split_path=True)
return isAllowedFilename(elems[3])
return False
def isFeedContentType(contentType):
"""Is a content-type for a RSS feed?"""
feedTypes = [ u'application/rdf+xml', u'application/atom+xml',
u'application/rss+xml', u'application/podcast+xml', u'text/xml',
u'application/xml',
]
for type in feedTypes:
if contentType.startswith(type):
return True
return False
def guessExtension(mimetype):
"""
Pass a mime type to this method and it will return a corresponding file
extension, or None if it doesn't know about the type.
"""
possibleExtensions = MIMETYPES_EXT_MAP.get(mimetype)
if possibleExtensions is None:
return None
return possibleExtensions[0]
def guessMimeType(filename):
"""
Pass a filename to this method and it will return a corresponding mime type,
or 'video/unknown' if the filename has a known video extension but no
corresponding mime type, or None if it doesn't know about the file extension.
"""
root, ext = os.path.splitext(filename)
possibleTypes = EXT_MIMETYPES_MAP.get(ext)
if possibleTypes is None:
if isVideoFilename(filename):
return 'video/unknown'
elif isAudioFilename(filename):
return 'audio/unknown'
else:
return None
return possibleTypes[0]
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