[ie/JioSaavn] Add extractors (#8307)

Authored by: awalgarg

yt_dlp/extractor/_extractors.py

@@ -894,6 +894,10 @@
     SangiinIE,
 )
 from .jeuxvideo import JeuxVideoIE
+from .jiosaavn import (
+    JioSaavnSongIE,
+    JioSaavnAlbumIE,
+)
 from .jove import JoveIE
 from .joj import JojIE
 from .jstream import JStreamIE

yt_dlp/extractor/jiosaavn.py

@@ -0,0 +1,79 @@
+from .common import InfoExtractor
+from ..utils import (
+    js_to_json,
+    url_or_none,
+    urlencode_postdata,
+    urljoin,
+)
+from ..utils.traversal import traverse_obj
+
+
+class JioSaavnBaseIE(InfoExtractor):
+    def _extract_initial_data(self, url, audio_id):
+        webpage = self._download_webpage(url, audio_id)
+        return self._search_json(
+            r'window\.__INITIAL_DATA__\s*=', webpage,
+            'init json', audio_id, transform_source=js_to_json)
+
+
+class JioSaavnSongIE(JioSaavnBaseIE):
+    _VALID_URL = r'https?://(?:www\.)?(?:jiosaavn\.com/song/[^/?#]+/|saavn\.com/s/song/(?:[^/?#]+/){3})(?P<id>[^/?#]+)'
+    _TESTS = [{
+        'url': 'https://www.jiosaavn.com/song/leja-re/OQsEfQFVUXk',
+        'md5': '7b1f70de088ede3a152ea34aece4df42',
+        'info_dict': {
+            'id': 'OQsEfQFVUXk',
+            'ext': 'mp3',
+            'title': 'Leja Re',
+            'album': 'Leja Re',
+            'thumbnail': 'https://c.saavncdn.com/258/Leja-Re-Hindi-2018-20181124024539-500x500.jpg',
+        },
+    }, {
+        'url': 'https://www.saavn.com/s/song/hindi/Saathiya/O-Humdum-Suniyo-Re/KAMiazoCblU',
+        'only_matching': True,
+    }]
+
+    def _real_extract(self, url):
+        audio_id = self._match_id(url)
+        song_data = self._extract_initial_data(url, audio_id)['song']['song']
+        media_data = self._download_json(
+            'https://www.jiosaavn.com/api.php', audio_id, data=urlencode_postdata({
+                '__call': 'song.generateAuthToken',
+                '_format': 'json',
+                'bitrate': '128',
+                'url': song_data['encrypted_media_url'],
+            }))
+
+        return {
+            'id': audio_id,
+            'url': media_data['auth_url'],
+            'ext': media_data.get('type'),
+            'vcodec': 'none',
+            **traverse_obj(song_data, {
+                'title': ('title', 'text'),
+                'album': ('album', 'text'),
+                'thumbnail': ('image', 0, {url_or_none}),
+            }),
+        }
+
+
+class JioSaavnAlbumIE(JioSaavnBaseIE):
+    _VALID_URL = r'https?://(?:www\.)?(?:jio)?saavn\.com/album/[^/?#]+/(?P<id>[^/?#]+)'
+    _TESTS = [{
+        'url': 'https://www.jiosaavn.com/album/96/buIOjYZDrNA_',
+        'info_dict': {
+            'id': 'buIOjYZDrNA_',
+            'title': '96',
+        },
+        'playlist_count': 10,
+    }]
+
+    def _real_extract(self, url):
+        album_id = self._match_id(url)
+        album_view = self._extract_initial_data(url, album_id)['albumView']
+
+        return self.playlist_from_matches(
+            traverse_obj(album_view, (
+                'modules', lambda _, x: x['key'] == 'list', 'data', ..., 'title', 'action', {str})),
+            album_id, traverse_obj(album_view, ('album', 'title', 'text', {str})), ie=JioSaavnSongIE,
+            getter=lambda x: urljoin('https://www.jiosaavn.com/', x))