youtube_dl/extractor/bandcamp.py

   1 from __future__ import unicode_literals
   2
   3 import json
   4 import re
   5
   6 from .common import InfoExtractor
   7 from ..utils import (
   8     compat_str,
   9     compat_urlparse,
  10     ExtractorError,
  11 )
  12
  13
  14 class BandcampIE(InfoExtractor):
  15     _VALID_URL = r'https?://.*?\.bandcamp\.com/track/(?P<title>.*)'
  16     _TESTS = [{
  17         'url': 'http://youtube-dl.bandcamp.com/track/youtube-dl-test-song',
  18         'file': '1812978515.mp3',
  19         'md5': 'c557841d5e50261777a6585648adf439',
  20         'info_dict': {
  21             "title": "youtube-dl  \"'/\\\u00e4\u21ad - youtube-dl test song \"'/\\\u00e4\u21ad",
  22             "duration": 9.8485,
  23         },
  24         '_skip': 'There is a limit of 200 free downloads / month for the test song'
  25     }]
  26
  27     def _real_extract(self, url):
  28         mobj = re.match(self._VALID_URL, url)
  29         title = mobj.group('title')
  30         webpage = self._download_webpage(url, title)
  31         m_download = re.search(r'freeDownloadPage: "(.*?)"', webpage)
  32         if not m_download:
  33             m_trackinfo = re.search(r'trackinfo: (.+),\s*?\n', webpage)
  34             if m_trackinfo:
  35                 json_code = m_trackinfo.group(1)
  36                 data = json.loads(json_code)[0]
  37
  38                 formats = []
  39                 for format_id, format_url in data['file'].items():
  40                     ext, abr_str = format_id.split('-', 1)
  41                     formats.append({
  42                         'format_id': format_id,
  43                         'url': format_url,
  44                         'ext': ext,
  45                         'vcodec': 'none',
  46                         'acodec': ext,
  47                         'abr': int(abr_str),
  48                     })
  49
  50                 self._sort_formats(formats)
  51
  52                 return {
  53                     'id': compat_str(data['id']),
  54                     'title': data['title'],
  55                     'formats': formats,
  56                     'duration': float(data['duration']),
  57                 }
  58             else:
  59                 raise ExtractorError('No free songs found')
  60
  61         download_link = m_download.group(1)
  62         video_id = re.search(
  63             r'var TralbumData = {(.*?)id: (?P<id>\d*?)$',
  64             webpage, re.MULTILINE | re.DOTALL).group('id')
  65
  66         download_webpage = self._download_webpage(download_link, video_id, 'Downloading free downloads page')
  67         # We get the dictionary of the track from some javascript code
  68         info = re.search(r'items: (.*?),$', download_webpage, re.MULTILINE).group(1)
  69         info = json.loads(info)[0]
  70         # We pick mp3-320 for now, until format selection can be easily implemented.
  71         mp3_info = info['downloads']['mp3-320']
  72         # If we try to use this url it says the link has expired
  73         initial_url = mp3_info['url']
  74         re_url = r'(?P<server>http://(.*?)\.bandcamp\.com)/download/track\?enc=mp3-320&fsig=(?P<fsig>.*?)&id=(?P<id>.*?)&ts=(?P<ts>.*)$'
  75         m_url = re.match(re_url, initial_url)
  76         #We build the url we will use to get the final track url
  77         # This url is build in Bandcamp in the script download_bunde_*.js
  78         request_url = '%s/statdownload/track?enc=mp3-320&fsig=%s&id=%s&ts=%s&.rand=665028774616&.vrs=1' % (m_url.group('server'), m_url.group('fsig'), video_id, m_url.group('ts'))
  79         final_url_webpage = self._download_webpage(request_url, video_id, 'Requesting download url')
  80         # If we could correctly generate the .rand field the url would be
  81         #in the "download_url" key
  82         final_url = re.search(r'"retry_url":"(.*?)"', final_url_webpage).group(1)
  83
  84         return {
  85             'id': video_id,
  86             'title': info['title'],
  87             'ext': 'mp3',
  88             'vcodec': 'none',
  89             'url': final_url,
  90             'thumbnail': info.get('thumb_url'),
  91             'uploader': info.get('artist'),
  92         }
  93
  94
  95 class BandcampAlbumIE(InfoExtractor):
  96     IE_NAME = 'Bandcamp:album'
  97     _VALID_URL = r'https?://(?:(?P<subdomain>[^.]+)\.)?bandcamp\.com(?:/album/(?P<title>[^?#]+))'
  98
  99     _TEST = {
 100         'url': 'http://blazo.bandcamp.com/album/jazz-format-mixtape-vol-1',
 101         'playlist': [
 102             {
 103                 'file': '1353101989.mp3',
 104                 'md5': '39bc1eded3476e927c724321ddf116cf',
 105                 'info_dict': {
 106                     'title': 'Intro',
 107                 }
 108             },
 109             {
 110                 'file': '38097443.mp3',
 111                 'md5': '1a2c32e2691474643e912cc6cd4bffaa',
 112                 'info_dict': {
 113                     'title': 'Kero One - Keep It Alive (Blazo remix)',
 114                 }
 115             },
 116         ],
 117         'params': {
 118             'playlistend': 2
 119         },
 120         'skip': 'Bandcamp imposes download limits. See test_playlists:test_bandcamp_album for the playlist test'
 121     }
 122
 123     def _real_extract(self, url):
 124         mobj = re.match(self._VALID_URL, url)
 125         playlist_id = mobj.group('subdomain')
 126         title = mobj.group('title')
 127         display_id = title or playlist_id
 128         webpage = self._download_webpage(url, display_id)
 129         tracks_paths = re.findall(r'<a href="(.*?)" itemprop="url">', webpage)
 130         if not tracks_paths:
 131             raise ExtractorError('The page doesn\'t contain any tracks')
 132         entries = [
 133             self.url_result(compat_urlparse.urljoin(url, t_path), ie=BandcampIE.ie_key())
 134             for t_path in tracks_paths]
 135         title = self._search_regex(r'album_title : "(.*?)"', webpage, 'title')
 136         return {
 137             '_type': 'playlist',
 138             'id': playlist_id,
 139             'display_id': display_id,
 140             'title': title,
 141             'entries': entries,
 142         }