3 # This file is part of Jamaendo.
4 # Copyright (c) 2010, Kristoffer Gronlund
7 # Redistribution and use in source and binary forms, with or without
8 # modification, are permitted provided that the following conditions are met:
9 # * Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
11 # * Redistributions in binary form must reproduce the above copyright
12 # notice, this list of conditions and the following disclaimer in the
13 # documentation and/or other materials provided with the distribution.
14 # * Neither the name of Jamaendo nor the
15 # names of its contributors may be used to endorse or promote products
16 # derived from this software without specific prior written permission.
18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
19 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
21 # DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
22 # DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
25 # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
27 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 # An improved, structured jamendo API wrapper for the N900 with cacheing
30 # Image / cover downloads.. and more?
31 import urllib, threading, os, gzip, time, simplejson, re
35 _GET2 = '''http://api.jamendo.com/get2/'''
36 _MP3URL = _GET2+'stream/track/redirect/?id=%d&streamencoding=mp31'
37 _OGGURL = _GET2+'stream/track/redirect/?id=%d&streamencoding=ogg2'
38 _TORRENTURL = _GET2+'bittorrent/file/redirect/?album_id=%d&type=archive&class=mp32'
40 def set_cache_dir(cachedir):
44 _COVERDIR = os.path.join(_CACHEDIR, 'covers')
47 os.makedirs(_CACHEDIR)
52 os.makedirs(_COVERDIR)
56 # These classes can be partially constructed,
57 # and if asked for a property they don't know,
58 # makes a query internally to get the full story
60 _ARTIST_FIELDS = ['id', 'name', 'image']
61 _ALBUM_FIELDS = ['id', 'name', 'image', 'artist_name', 'artist_id', 'license_url']
62 _TRACK_FIELDS = ['id', 'name', 'image', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration']
63 _RADIO_FIELDS = ['id', 'name', 'idstr', 'image']
65 class LazyQuery(object):
66 def set_from_json(self, json):
67 for key, value in json.iteritems():
69 assert(self.ID == int(value))
71 if key.endswith('_id'):
73 setattr(self, key, value)
76 """Not automatic for now,
77 will have to do artist.load()
79 This is filled in further down
84 def _needs_load(self):
87 def _set_from(self, other):
90 def _needs_load_impl(self, *attrs):
92 if getattr(self, attr) is None:
96 def _set_from_impl(self, other, *attrs):
98 self._set_if(other, attr)
100 def _set_if(self, other, attrname):
101 if getattr(self, attrname) is None and getattr(other, attrname) is not None:
102 setattr(self, attrname, getattr(other, attrname))
106 return u"%s(%s)"%(self.__class__.__name__,
107 u", ".join(repr(v) for k,v in self.__dict__.iteritems() if not k.startswith('_')))
108 except UnicodeEncodeError:
110 #traceback.print_exc()
111 return u"%s(?)"%(self.__class__.__name__)
113 class Artist(LazyQuery):
114 def __init__(self, ID, json=None):
118 self.albums = None # None means not downloaded
120 self.set_from_json(json)
122 def _needs_load(self):
123 return self._needs_load_impl('name', 'albums')
125 def _set_from(self, other):
126 return self._set_from_impl(other, 'name', 'image', 'albums')
128 class Album(LazyQuery):
129 def __init__(self, ID, json=None):
133 self.artist_name = None
134 self.artist_id = None
135 self.license_url = None
136 self.tracks = None # None means not downloaded
138 self.set_from_json(json)
140 def torrent_url(self):
141 return _TORRENTURL%(self.ID)
144 def _needs_load(self):
145 return self._needs_load_impl('name', 'image', 'artist_name', 'artist_id', 'license_url', 'tracks')
147 def _set_from(self, other):
148 return self._set_from_impl(other, 'name', 'image', 'artist_name', 'artist_id', 'license_url', 'tracks')
150 class Track(LazyQuery):
151 def __init__(self, ID, json=None):
155 self.artist_name = None
156 self.album_name = None
161 self.set_from_json(json)
164 return _MP3URL%(self.ID)
167 return _OGGURL%(self.ID)
169 def _needs_load(self):
170 return self._needs_load_impl('name', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration')
172 def _set_from(self, other):
173 return self._set_from_impl(other, 'name', 'image', 'artist_name', 'album_name', 'album_id', 'numalbum', 'duration')
175 class Radio(LazyQuery):
176 def __init__(self, ID, json=None):
182 self.set_from_json(json)
184 def _needs_load(self):
185 return self._needs_load_impl('name', 'idstr', 'image')
187 def _set_from(self, other):
188 return self._set_from_impl(other, 'name', 'idstr', 'image')
191 _artists = {} # id -> Artist()
192 _albums = {} # id -> Album()
193 _tracks = {} # id -> Track()
194 _radios = {} # id -> Radio()
197 # cache sizes per session (TODO)
198 _CACHED_ARTISTS = 100
203 # TODO: cache queries?
206 rate_limit = 1.1 # seconds between queries
207 last_query = time.time() - 1.5
212 if now - cls.last_query < cls.rate_limit:
213 time.sleep(cls.rate_limit - (now - cls.last_query))
219 def _geturl(self, url):
220 #print "*** %s" % (url)
223 f = urllib.urlopen(url)
224 ret = simplejson.load(f)
231 return "#%s" % (self.__class__.__name__)
238 class CoverFetcher(threading.Thread):
240 threading.Thread.__init__(self)
242 self.cond = threading.Condition()
245 def _fetch_cover(self, albumid, size):
247 coverdir = _COVERDIR if _COVERDIR else '/tmp'
248 to = os.path.join(coverdir, '%d-%d.jpg'%(albumid, size))
249 if not os.path.isfile(to):
250 url = _GET2+'image/album/redirect/?id=%d&imagesize=%d'%(albumid, size)
251 urllib.urlretrieve(url, to)
256 def request_cover(self, albumid, size, cb):
258 self.work.insert(0, (albumid, size, cb))
274 multi = len(work) > 1
275 for albumid, size, cb in work:
276 cover = self._fetch_cover(albumid, size)
278 cb(albumid, size, cover)
282 class CoverCache(object):
284 cache and fetch covers
285 TODO: background thread that
286 fetches and returns covers,
290 self._covers = {} # (albumid, size) -> file
291 coverdir = _COVERDIR if _COVERDIR else '/tmp'
292 if os.path.isdir(coverdir):
293 covermatch = re.compile(r'(\d+)\-(\d+)\.jpg')
294 for fil in os.listdir(coverdir):
295 fl = os.path.join(coverdir, fil)
296 m = covermatch.match(fil)
297 if m and os.path.isfile(fl):
298 self._covers[(int(m.group(1)), int(m.group(2)))] = fl
299 self._fetcher = CoverFetcher()
300 self._fetcher.start()
302 def fetch_cover(self, albumid, size):
303 coverdir = _COVERDIR if _COVERDIR else '/tmp'
304 to = os.path.join(coverdir, '%d-%d.jpg'%(albumid, size))
305 if not os.path.isfile(to):
306 url = _GET2+'image/album/redirect/?id=%d&imagesize=%d'%(albumid, size)
307 urllib.urlretrieve(url, to)
308 self._covers[(albumid, size)] = to
311 def get_cover(self, albumid, size):
312 cover = self._covers.get((albumid, size), None)
314 cover = self.fetch_cover(albumid, size)
317 def get_async(self, albumid, size, cb):
318 cover = self._covers.get((albumid, size), None)
320 cb(albumid, size, cover)
322 self._fetcher.request_cover(albumid, size, cb)
324 _cover_cache = CoverCache()
326 def get_album_cover(albumid, size=100):
327 return _cover_cache.get_cover(albumid, size)
329 def get_album_cover_async(cb, albumid, size=100):
330 _cover_cache.get_async(albumid, size, cb)
332 class CustomQuery(Query):
333 def __init__(self, url):
338 return self._geturl(self.url)
343 class GetQuery(Query):
346 'url' : _GET2+'+'.join(_ARTIST_FIELDS)+'/artist/json/?',
347 'params' : 'artist_id=%d',
348 'constructor' : Artist
351 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/?',
352 'params' : 'album_id=%d',
353 'constructor' : Album
356 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/?',
357 'params' : 'artist_id=%d',
358 'constructor' : [Album]
361 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/track_album+album_artist?',
363 'constructor' : Track
366 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/track_album+album_artist?',
367 'params' : 'order=numalbum_asc&album_id=%d',
368 'constructor' : [Track]
371 'url' : _GET2+'+'.join(_TRACK_FIELDS)+'/track/json/radio_track_inradioplaylist+track_album+album_artist/?',
372 'params' : 'order=random_asc&radio_id=%d',
373 'constructor' : [Track]
375 'favorite_albums' : {
376 'url' : _GET2+'+'.join(_ALBUM_FIELDS)+'/album/json/album_user_starred/?',
377 'params' : 'user_idstr=%s',
378 'constructor' : [Album]
380 #http://api.jamendo.com/get2/id+name+url+image+artist_name/album/jsonpretty/album_user_starred/?user_idstr=sylvinus&n=all
381 #q = SearchQuery('album', user_idstr=user)
384 #http://api.jamendo.com/get2/id+name+image+artist_name+album_name+album_id+numalbum+duration/track/json/radio_track_inradioplaylist+track_album+album_artist/?order=numradio_asc&radio_id=283
386 def __init__(self, what, ID):
389 info = GetQuery.queries[what]
390 self.url = info['url']
391 self.params = info['params']
392 self.constructor = info['constructor']
394 def construct(self, data):
395 constructor = self.constructor
396 if isinstance(constructor, list):
397 constructor = constructor[0]
398 if isinstance(data, list):
399 return [constructor(int(x['id']), json=x) for x in data]
401 return constructor(int(data['id']), json=data)
404 js = self._geturl(self.url + self.params % (self.ID))
407 return self.construct(js)
410 return self.url + self.params % (self.ID)
412 class SearchQuery(GetQuery):
413 def __init__(self, what, query=None, order=None, user=None, count=10):
414 GetQuery.__init__(self, what, None)
423 params['searchquery'] = self.query
425 params['order'] = self.order
427 params['n'] = self.count
429 params['user_idstr'] = self.user
430 js = self._geturl(self.url + urllib.urlencode(params))
433 return self.construct(js)
436 params = {'searchquery':self.query, 'order':self.order, 'n':self.count}
437 return self.url + urllib.urlencode(params)
439 class JamendoAPIException(Exception):
440 def __init__(self, url):
441 Exception.__init__(self, url)
443 def _update_cache(cache, new_items):
444 if not isinstance(new_items, list):
445 new_items = [new_items]
446 for item in new_items:
447 old = cache.get(item.ID)
451 cache[item.ID] = item
453 def get_artist(artist_id):
454 """Returns: Artist"""
455 a = _artists.get(artist_id, None)
457 q = GetQuery('artist', artist_id)
460 raise JamendoAPIException(str(q))
461 _update_cache(_artists, a)
462 if isinstance(a, list):
466 def get_albums(artist_id):
467 """Returns: [Album]"""
468 q = GetQuery('albums', artist_id)
471 raise JamendoAPIException(str(q))
472 _update_cache(_artists, a)
475 def get_album(album_id):
477 a = _albums.get(album_id, None)
479 q = GetQuery('album', album_id)
482 raise JamendoAPIException(str(q))
483 _update_cache(_albums, a)
484 if isinstance(a, list):
488 def get_tracks(album_id):
489 """Returns: [Track]"""
490 q = GetQuery('tracks', album_id)
493 raise JamendoAPIException(str(q))
494 _update_cache(_tracks, a)
497 def get_track(track_id):
499 a = _tracks.get(track_id, None)
501 q = GetQuery('track', track_id)
504 raise JamendoAPIException(str(q))
505 _update_cache(_tracks, a)
506 if isinstance(a, list):
510 def get_radio_tracks(radio_id):
511 """Returns: [Track]"""
512 q = GetQuery('radio', radio_id)
515 raise JamendoAPIException(str(q))
516 _update_cache(_tracks, a)
519 def search_artists(query):
520 """Returns: [Artist]"""
521 q = SearchQuery('artist', query, 'searchweight_desc')
524 raise JamendoAPIException(str(q))
525 _update_cache(_artists, a)
528 def search_albums(query):
529 """Returns: [Album]"""
530 q = SearchQuery('album', query, 'searchweight_desc')
533 raise JamendoAPIException(str(q))
534 _update_cache(_albums, a)
537 def search_tracks(query):
538 """Returns: [Track]"""
539 q = SearchQuery('track', query=query, order='searchweight_desc')
542 raise JamendoAPIException(str(q))
543 _update_cache(_tracks, a)
546 def albums_of_the_week():
547 """Returns: [Album]"""
548 q = SearchQuery('album', order='ratingweek_desc')
551 raise JamendoAPIException(str(q))
552 _update_cache(_albums, a)
556 """Returns: [Track] (playlist)"""
557 q = SearchQuery('track', order='releasedate_desc')
560 raise JamendoAPIException(str(q))
561 _update_cache(_tracks, a)
564 def tracks_of_the_week():
565 """Returns: [Track] (playlist)"""
566 q = SearchQuery('track', order='ratingweek_desc')
569 raise JamendoAPIException(str(q))
570 _update_cache(_tracks, a)
573 def get_radio(radio_id):
575 q = CustomQuery(_GET2+"id+name+idstr+image/radio/json?id=%d"%(radio_id))
578 raise JamendoAPIException(str(q))
579 if isinstance(js, list):
581 return Radio(radio_id, json=js)
583 def starred_radios():
584 """Returns: [Radio]"""
585 q = CustomQuery(_GET2+"id+name+idstr+image/radio/json?order=starred_desc")
588 raise JamendoAPIException(str(q))
589 return [Radio(int(radio['id']), json=radio) for radio in js]
591 def favorite_albums(user):
592 """Returns: [Album]"""
593 q = SearchQuery('favorite_albums', user=user, count=20)
596 raise JamendoAPIException(str(q))
597 _update_cache(_albums, a)
600 ### Set loader functions for classes
602 def _artist_loader(self):
603 if self._needs_load():
604 artist = get_artist(self.ID)
605 self._set_from(artist)
606 Artist.load = _artist_loader
608 def _album_loader(self):
609 if self._needs_load():
610 album = get_album(self.ID)
611 album.tracks = get_tracks(self.ID)
612 self._set_from(album)
613 Album.load = _album_loader
615 def _track_loader(self):
616 track = get_track(self.ID)
617 self._set_from(track)
618 Track.load = _track_loader
620 def _radio_loader(self):
621 radio = get_radio(self.ID)
622 self._set_from(radio)
623 Radio.load = _radio_loader