[lbry] add support for channel extraction(closes #25584)

2 files changed, 141 insertions, 43 deletions

diff --git a/youtube_dl/extractor/extractors.py b/youtube_dl/extractor/extractors.py
index 86589a059..a94502eb3 100644
--- a/youtube_dl/extractor/extractors.py
+++ b/youtube_dl/extractor/extractors.py
@@ -534,7 +534,10 @@ from .laola1tv import (
     EHFTVIE,
     ITTFIE,
 )
-from .lbry import LBRYIE
+from .lbry import (
+    LBRYIE,
+    LBRYChannelIE,
+)
 from .lci import LCIIE
 from .lcp import (
     LcpPlayIE,
diff --git a/youtube_dl/extractor/lbry.py b/youtube_dl/extractor/lbry.py
index 4fd50a60d..41cc245eb 100644
--- a/youtube_dl/extractor/lbry.py
+++ b/youtube_dl/extractor/lbry.py
@@ -1,6 +1,7 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
+import functools
 import json
 
 from .common import InfoExtractor
@@ -10,15 +11,73 @@ from ..utils import (
     ExtractorError,
     int_or_none,
     mimetype2ext,
+    OnDemandPagedList,
     try_get,
     urljoin,
 )
 
 
-class LBRYIE(InfoExtractor):
-    IE_NAME = 'lbry.tv'
+class LBRYBaseIE(InfoExtractor):
+    _BASE_URL_REGEX = r'https?://(?:www\.)?(?:lbry\.tv|odysee\.com)/'
     _CLAIM_ID_REGEX = r'[0-9a-f]{1,40}'
-    _VALID_URL = r'https?://(?:www\.)?(?:lbry\.tv|odysee\.com)/(?P<id>@[^:]+:{0}/[^:]+:{0}|[^:]+:{0}|\$/embed/[^/]+/{0})'.format(_CLAIM_ID_REGEX)
+    _OPT_CLAIM_ID = '[^:/?#&]+(?::%s)?' % _CLAIM_ID_REGEX
+    _SUPPORTED_STREAM_TYPES = ['video', 'audio']
+
+    def _call_api_proxy(self, method, display_id, params, resource):
+        return self._download_json(
+            'https://api.lbry.tv/api/v1/proxy',
+            display_id, 'Downloading %s JSON metadata' % resource,
+            headers={'Content-Type': 'application/json-rpc'},
+            data=json.dumps({
+                'method': method,
+                'params': params,
+            }).encode())['result']
+
+    def _resolve_url(self, url, display_id, resource):
+        return self._call_api_proxy(
+            'resolve', display_id, {'urls': url}, resource)[url]
+
+    def _permanent_url(self, url, claim_name, claim_id):
+        return urljoin(url, '/%s:%s' % (claim_name, claim_id))
+
+    def _parse_stream(self, stream, url):
+        stream_value = stream.get('value') or {}
+        stream_type = stream_value.get('stream_type')
+        source = stream_value.get('source') or {}
+        media = stream_value.get(stream_type) or {}
+        signing_channel = stream.get('signing_channel') or {}
+        channel_name = signing_channel.get('name')
+        channel_claim_id = signing_channel.get('claim_id')
+        channel_url = None
+        if channel_name and channel_claim_id:
+            channel_url = self._permanent_url(url, channel_name, channel_claim_id)
+
+        info = {
+            'thumbnail': try_get(stream_value, lambda x: x['thumbnail']['url'], compat_str),
+            'description': stream_value.get('description'),
+            'license': stream_value.get('license'),
+            'timestamp': int_or_none(stream.get('timestamp')),
+            'tags': stream_value.get('tags'),
+            'duration': int_or_none(media.get('duration')),
+            'channel': try_get(signing_channel, lambda x: x['value']['title']),
+            'channel_id': channel_claim_id,
+            'channel_url': channel_url,
+            'ext': determine_ext(source.get('name')) or mimetype2ext(source.get('media_type')),
+            'filesize': int_or_none(source.get('size')),
+        }
+        if stream_type == 'audio':
+            info['vcodec'] = 'none'
+        else:
+            info.update({
+                'width': int_or_none(media.get('width')),
+                'height': int_or_none(media.get('height')),
+            })
+        return info
+
+
+class LBRYIE(LBRYBaseIE):
+    IE_NAME = 'lbry'
+    _VALID_URL = LBRYBaseIE._BASE_URL_REGEX + r'(?P<id>\$/[^/]+/[^/]+/{1}|@{0}/{0}|(?!@){0})'.format(LBRYBaseIE._OPT_CLAIM_ID, LBRYBaseIE._CLAIM_ID_REGEX)
     _TESTS = [{
         # Video
         'url': 'https://lbry.tv/@Mantega:1/First-day-LBRY:1',
@@ -30,6 +89,8 @@ class LBRYIE(InfoExtractor):
             'description': 'md5:f6cb5c704b332d37f5119313c2c98f51',
             'timestamp': 1595694354,
             'upload_date': '20200725',
+            'width': 1280,
+            'height': 720,
         }
     }, {
         # Audio
@@ -47,6 +108,7 @@ class LBRYIE(InfoExtractor):
             'channel': 'The LBRY Foundation',
             'channel_id': '0ed629d2b9c601300cacf7eabe9da0be79010212',
             'channel_url': 'https://lbry.tv/@LBRYFoundation:0ed629d2b9c601300cacf7eabe9da0be79010212',
+            'vcodec': 'none',
         }
     }, {
         'url': 'https://odysee.com/@BrodieRobertson:5/apple-is-tracking-everything-you-do-on:e',
@@ -63,57 +125,90 @@ class LBRYIE(InfoExtractor):
     }, {
         'url': 'https://lbry.tv/Episode-1:e7',
         'only_matching': True,
+    }, {
+        'url': 'https://lbry.tv/@LBRYFoundation/Episode-1',
+        'only_matching': True,
+    }, {
+        'url': 'https://lbry.tv/$/download/Episode-1/e7d93d772bd87e2b62d5ab993c1c3ced86ebb396',
+        'only_matching': True,
     }]
 
-    def _call_api_proxy(self, method, display_id, params):
-        return self._download_json(
-            'https://api.lbry.tv/api/v1/proxy', display_id,
-            headers={'Content-Type': 'application/json-rpc'},
-            data=json.dumps({
-                'method': method,
-                'params': params,
-            }).encode())['result']
-
     def _real_extract(self, url):
         display_id = self._match_id(url)
-        if display_id.startswith('$/embed/'):
-            display_id = display_id[8:].replace('/', ':')
+        if display_id.startswith('$/'):
+            display_id = display_id.split('/', 2)[-1].replace('/', ':')
         else:
             display_id = display_id.replace(':', '#')
         uri = 'lbry://' + display_id
-        result = self._call_api_proxy(
-            'resolve', display_id, {'urls': [uri]})[uri]
+        result = self._resolve_url(uri, display_id, 'stream')
         result_value = result['value']
-        if result_value.get('stream_type') not in ('video', 'audio'):
+        if result_value.get('stream_type') not in self._SUPPORTED_STREAM_TYPES:
             raise ExtractorError('Unsupported URL', expected=True)
         claim_id = result['claim_id']
         title = result_value['title']
         streaming_url = self._call_api_proxy(
-            'get', claim_id, {'uri': uri})['streaming_url']
-        source = result_value.get('source') or {}
-        media = result_value.get('video') or result_value.get('audio') or {}
-        signing_channel = result.get('signing_channel') or {}
-        channel_name = signing_channel.get('name')
-        channel_claim_id = signing_channel.get('claim_id')
-        channel_url = None
-        if channel_name and channel_claim_id:
-            channel_url = urljoin(url, '/%s:%s' % (channel_name, channel_claim_id))
-
-        return {
+            'get', claim_id, {'uri': uri}, 'streaming url')['streaming_url']
+        info = self._parse_stream(result, url)
+        info.update({
             'id': claim_id,
             'title': title,
-            'thumbnail': try_get(result_value, lambda x: x['thumbnail']['url'], compat_str),
-            'description': result_value.get('description'),
-            'license': result_value.get('license'),
-            'timestamp': int_or_none(result.get('timestamp')),
-            'tags': result_value.get('tags'),
-            'width': int_or_none(media.get('width')),
-            'height': int_or_none(media.get('height')),
-            'duration': int_or_none(media.get('duration')),
-            'channel': try_get(signing_channel, lambda x: x['value']['title']),
-            'channel_id': channel_claim_id,
-            'channel_url': channel_url,
-            'ext': determine_ext(source.get('name')) or mimetype2ext(source.get('media_type')),
-            'filesize': int_or_none(source.get('size')),
             'url': streaming_url,
-        }
+        })
+        return info
+
+
+class LBRYChannelIE(LBRYBaseIE):
+    IE_NAME = 'lbry:channel'
+    _VALID_URL = LBRYBaseIE._BASE_URL_REGEX + r'(?P<id>@%s)/?(?:[?#&]|$)' % LBRYBaseIE._OPT_CLAIM_ID
+    _TESTS = [{
+        'url': 'https://lbry.tv/@LBRYFoundation:0',
+        'info_dict': {
+            'id': '0ed629d2b9c601300cacf7eabe9da0be79010212',
+            'title': 'The LBRY Foundation',
+            'description': 'Channel for the LBRY Foundation. Follow for updates and news.',
+        },
+        'playlist_count': 29,
+    }, {
+        'url': 'https://lbry.tv/@LBRYFoundation',
+        'only_matching': True,
+    }]
+    _PAGE_SIZE = 50
+
+    def _fetch_page(self, claim_id, url, page):
+        page += 1
+        result = self._call_api_proxy(
+            'claim_search', claim_id, {
+                'channel_ids': [claim_id],
+                'claim_type': 'stream',
+                'no_totals': True,
+                'page': page,
+                'page_size': self._PAGE_SIZE,
+                'stream_types': self._SUPPORTED_STREAM_TYPES,
+            }, 'page %d' % page)
+        for item in (result.get('items') or []):
+            stream_claim_name = item.get('name')
+            stream_claim_id = item.get('claim_id')
+            if not (stream_claim_name and stream_claim_id):
+                continue
+
+            info = self._parse_stream(item, url)
+            info.update({
+                '_type': 'url',
+                'id': stream_claim_id,
+                'title': try_get(item, lambda x: x['value']['title']),
+                'url': self._permanent_url(url, stream_claim_name, stream_claim_id),
+            })
+            yield info
+
+    def _real_extract(self, url):
+        display_id = self._match_id(url).replace(':', '#')
+        result = self._resolve_url(
+            'lbry://' + display_id, display_id, 'channel')
+        claim_id = result['claim_id']
+        entries = OnDemandPagedList(
+            functools.partial(self._fetch_page, claim_id, url),
+            self._PAGE_SIZE)
+        result_value = result.get('value') or {}
+        return self.playlist_result(
+            entries, claim_id, result_value.get('title'),
+            result_value.get('description'))