[gameone] Add new extractor gameone

Currently only usable for downloading tv episodes residing under
http://www.gameone.de/tv/

youtube_dl/extractor/gameone.py

@@ -0,0 +1,62 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+import re
+
+from .common import InfoExtractor
+from ..utils import xpath_with_ns
+
+NAMESPACE_MAP = {
+    'media': 'http://search.yahoo.com/mrss/',
+}
+
+RAW_MP4_URL = 'http://cdn.riptide-mtvn.com/'
+
+class GameOneIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?gameone\.de/tv/(?P<id>\d+)'
+    _TESTS = {
+        'url': 'http://www.gameone.de/tv/288',
+        'md5': '136656b7fb4c9cb4a8e2d500651c499b',
+        'info_dict': {
+            'id': '288',
+            'ext': 'mp4',
+            'title': 'Game One - Folge 288',
+            'duration': 1238,
+            'thumbnail': 'http://s3.gameone.de/gameone/assets/video_metas/teaser_images/000/643/636/big/640x360.jpg',
+        }
+    }
+
+    def _real_extract(self, url):
+        mobj = re.match(self._VALID_URL, url)
+        video_id = mobj.group('id')
+
+        webpage = self._download_webpage(url, video_id)
+        og_video = self._og_search_video_url(webpage, secure=False)
+        mrss_url = self._search_regex(r'mrss=([^&]+)', og_video, 'mrss')
+
+        mrss = self._download_xml(mrss_url, video_id, 'Downloading mrss')
+        title = mrss.find('.//item/title').text
+        thumbnail = mrss.find('.//item/image').get('url')
+        content = mrss.find(xpath_with_ns('.//media:content', NAMESPACE_MAP))
+        content_url = content.get('url')
+
+        content = self._download_xml(content_url, video_id, 'Downloading media:content')
+        rendition_items = content.findall('.//rendition')
+        duration = int(rendition_items[0].get('duration'))
+        formats = [
+                {
+                    'url': re.sub(r'.*/(r2)', RAW_MP4_URL + r'\1', r.find('./src').text),
+                    'width': int(r.get('width')),
+                    'height': int(r.get('height')),
+                    'tbr': int(r.get('bitrate')),
+                }
+            for r in rendition_items
+        ]
+
+        return {
+            'id': video_id,
+            'title': title,
+            'thumbnail': thumbnail,
+            'duration': duration,
+            'formats': formats,
+        }