[ooyala] Try mobile player JS URLs for all available devices (Closes #3498)

Looks like some videos are only available for particular devices
(e.g. http://player.ooyala.com/player.js?embedCode=x1b3lqZDq9y_7kMyC2Op5qo-p077tXD0
is only available for ipad)
Working around with fetching URLs for all the devices found starting with 'unknown'
until we succeed or eventually fail for each device.

youtube_dl/extractor/ooyala.py

@@ -3,13 +3,17 @@ import re
 import json
 
 from .common import InfoExtractor
-from ..utils import unescapeHTML
+from ..utils import (
+    unescapeHTML,
+    ExtractorError,
+)
 
 
 class OoyalaIE(InfoExtractor):
     _VALID_URL = r'(?:ooyala:|https?://.+?\.ooyala\.com/.*?(?:embedCode|ec)=)(?P<id>.+?)(&|$)'
 
-    _TEST = {
+    _TESTS = [
+        {
             # From http://it.slashdot.org/story/13/04/25/178216/recovering-data-from-broken-hard-drives-and-ssds-video
             'url': 'http://player.ooyala.com/player.js?embedCode=pxczE2YjpfHfn1f3M-ykG_AmJRRn0PD8',
             'md5': '3f5cceb3a7bf461d6c29dc466cf8033c',
@@ -19,7 +23,18 @@ class OoyalaIE(InfoExtractor):
                 'title': 'Explaining Data Recovery from Hard Drives and SSDs',
                 'description': 'How badly damaged does a drive have to be to defeat Russell and his crew? Apparently, smashed to bits.',
             },
-    }
+        }, {
+            # Only available for ipad
+            'url': 'http://player.ooyala.com/player.js?embedCode=x1b3lqZDq9y_7kMyC2Op5qo-p077tXD0',
+            'md5': '4b9754921fddb68106e48c142e2a01e6',
+            'info_dict': {
+                'id': 'x1b3lqZDq9y_7kMyC2Op5qo-p077tXD0',
+                'ext': 'mp4',
+                'title': 'Simulation Overview - Levels of Simulation',
+                'description': '',
+            },
+        },
+    ]
 
     @staticmethod
     def _url_for_embed_code(embed_code):
@@ -47,11 +62,28 @@ class OoyalaIE(InfoExtractor):
         player = self._download_webpage(player_url, embedCode)
         mobile_url = self._search_regex(r'mobile_player_url="(.+?)&device="',
                                         player, 'mobile player url')
-        mobile_player = self._download_webpage(mobile_url, embedCode)
+        # Looks like some videos are only available for particular devices
+        # (e.g. http://player.ooyala.com/player.js?embedCode=x1b3lqZDq9y_7kMyC2Op5qo-p077tXD0
+        # is only available for ipad)
+        # Working around with fetching URLs for all the devices found starting with 'unknown'
+        # until we succeed or eventually fail for each device.
+        devices = re.findall(r'device\s*=\s*"([^"]+)";', player)
+        devices.remove('unknown')
+        devices.insert(0, 'unknown')
+        for device in devices:
+            mobile_player = self._download_webpage(
+                '%s&device=%s' % (mobile_url, device), embedCode,
+                'Downloading mobile player JS for %s device' % device)
             videos_info = self._search_regex(
                 r'var streams=window.oo_testEnv\?\[\]:eval\("\((\[{.*?}\])\)"\);',
-            mobile_player, 'info').replace('\\"','"')
+                mobile_player, 'info', fatal=False, default=None)
-        videos_more_info = self._search_regex(r'eval\("\(({.*?\\"promo\\".*?})\)"', mobile_player, 'more info').replace('\\"','"')
+            if videos_info:
+                break
+        if not videos_info:
+            raise ExtractorError('Unable to extract info')
+        videos_info = videos_info.replace('\\"', '"')
+        videos_more_info = self._search_regex(
+            r'eval\("\(({.*?\\"promo\\".*?})\)"', mobile_player, 'more info').replace('\\"', '"')
         videos_info = json.loads(videos_info)
         videos_more_info = json.loads(videos_more_info)