[bilibili] Support episodes

[extractor/bilibili] add md5 for testing

[extractor/bilibili] remove unnecessary headers

[extractor/bilibili] correct _TESTS; find thumbnail for episode

[extractor/bilibili] [Fix] restore removed tests

youtube_dl/extractor/bilibili.py

@@ -12,9 +12,13 @@
     unified_timestamp,
 )
 
+HEADERS = {
+    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
+}
+
 
 class BiliBiliIE(InfoExtractor):
-    _VALID_URL = r'https?://www\.bilibili\.(?:tv|com)/video/av(?P<id>\d+)'
+    _VALID_URL = r'https?://(www.|bangumi.|)bilibili\.(?:tv|com)/(video/av|anime/v/)(?P<id>\d+)'
 
     _TESTS = [{
         'url': 'http://www.bilibili.tv/video/av1074402/',
@@ -77,6 +81,17 @@ class BiliBiliIE(InfoExtractor):
             'skip_download': True,
         },
         'expected_warnings': ['upload time'],
+    }, {
+        'url': 'http://bangumi.bilibili.com/anime/v/40068',
+        'md5': '08d539a0884f3deb7b698fb13ba69696',
+        'info_dict': {
+            'id': '40068',
+            'ext': 'mp4',
+            'duration': 1402.357,
+            'title': '混沌武士 : 第7集 四面楚歌 A Risky Racket',
+            'description': "故事发生在日本的江户时代。风是一个小酒馆的打工女。一日，酒馆里来了一群恶霸，虽然他们的举动令风十分不满，但是毕竟风只是一届女流，无法对他们采取什么行动，只能在心里嘟哝。这时，酒家里又进来了个“不良份子”无幻，说以50个丸子帮她搞定这群人，风觉得他莫名其妙，也就没多搭理他。而在这时，风因为一个意外而将茶水泼在了恶霸头领——龙次郎身上。愤怒的恶霸们欲将风的手指砍掉，风在无奈中大喊道：“丸子100个！”…… 　　另一方面，龙次郎的父亲也就是当地的代官，依仗自己有着雄厚的保镖实力，在当地欺压穷人，当看到一穷人无法交齐足够的钱过桥时，欲下令将其杀死，武士仁看不惯这一幕，于是走上前，与代官的保镖交手了…… 　　酒馆内，因为风答应给无幻100个团子，无幻将恶霸们打败了，就在这时，仁进来了。好战的无幻立刻向仁发了战书，最后两败俱伤，被代官抓入牢房，预计第二天斩首…… 　　得知该状况的风，为报救命之恩，来到了刑场，利用烟花救出了无幻和仁。而风则以救命恩人的身份，命令二人和她一起去寻找带着向日葵香味的武士……(by百科)",
+            'thumbnail': 're:^http?://.+\.jpg',
+        },
     }]
 
     _APP_KEY = '6f90a59ac58a4123'
@@ -84,13 +99,20 @@ class BiliBiliIE(InfoExtractor):
 
     def _real_extract(self, url):
         video_id = self._match_id(url)
-
         webpage = self._download_webpage(url, video_id)
 
-        cid = compat_parse_qs(self._search_regex(
-            [r'EmbedPlayer\([^)]+,\s*"([^"]+)"\)',
-             r'<iframe[^>]+src="https://secure\.bilibili\.com/secure,([^"]+)"'],
-            webpage, 'player parameters'))['cid'][0]
+        _is_episode = 'anime/v' in url
+        if not _is_episode:
+            cid = compat_parse_qs(self._search_regex(
+                [r'EmbedPlayer\([^)]+,\s*"([^"]+)"\)',
+                r'<iframe[^>]+src="https://secure\.bilibili\.com/secure,([^"]+)"'],
+                webpage, 'player parameters'))['cid'][0]
+        else:
+            url_t = 'http://bangumi.bilibili.com/web_api/get_source'
+            js = self._download_json(url_t, video_id,
+                                     data='episode_id=%s' % video_id,
+                                     headers=HEADERS)
+            cid = js['result']['cid']
 
         payload = 'appkey=%s&cid=%s&otype=json&quality=2&type=mp4' % (self._APP_KEY, cid)
         sign = hashlib.md5((payload + self._BILIBILI_KEY).encode('utf-8')).hexdigest()
@@ -125,6 +147,10 @@ def _real_extract(self, url):
         description = self._html_search_meta('description', webpage)
         timestamp = unified_timestamp(self._html_search_regex(
             r'<time[^>]+datetime="([^"]+)"', webpage, 'upload time', fatal=False))
+        if _is_episode:
+            thumbnail = self._html_search_meta('og:image', webpage)
+        else:
+            thumbnail = self._html_search_meta('thumbnailUrl', webpage)
 
         # TODO 'view_count' requires deobfuscating Javascript
         info = {
@@ -132,7 +158,7 @@ def _real_extract(self, url):
             'title': title,
             'description': description,
             'timestamp': timestamp,
-            'thumbnail': self._html_search_meta('thumbnailUrl', webpage),
+            'thumbnail': thumbnail,
             'duration': float_or_none(video_info.get('timelength'), scale=1000),
         }