nzbToMedia/libs/beetsplug/fetchart.py
Labrys 1111074dc3 Update beets to 1.3.18:
Dependencies:
* PyYAML 3.11
* Unidecode 0.4.19
* beets 1.3.18
* colorama 0.3.7
* enum34 1.1.6
* jellyfish 0.5.4
* munkres 1.0.7
* musicbrainzngs 0.6
* mutagen 1.32
2016-06-06 12:08:52 -04:00

862 lines
32 KiB
Python

# -*- coding: utf-8 -*-
# This file is part of beets.
# Copyright 2016, Adrian Sampson.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""Fetches album art.
"""
from __future__ import division, absolute_import, print_function
from contextlib import closing
import os
import re
from tempfile import NamedTemporaryFile
import requests
from beets import plugins
from beets import importer
from beets import ui
from beets import util
from beets import config
from beets.util.artresizer import ArtResizer
from beets.util import confit
try:
import itunes
HAVE_ITUNES = True
except ImportError:
HAVE_ITUNES = False
IMAGE_EXTENSIONS = ['png', 'jpg', 'jpeg']
CONTENT_TYPES = ('image/jpeg', 'image/png')
DOWNLOAD_EXTENSION = '.jpg'
class Candidate(object):
"""Holds information about a matching artwork, deals with validation of
dimension restrictions and resizing.
"""
CANDIDATE_BAD = 0
CANDIDATE_EXACT = 1
CANDIDATE_DOWNSCALE = 2
MATCH_EXACT = 0
MATCH_FALLBACK = 1
def __init__(self, log, path=None, url=None, source=u'',
match=None, size=None):
self._log = log
self.path = path
self.url = url
self.source = source
self.check = None
self.match = match
self.size = size
def _validate(self, extra):
"""Determine whether the candidate artwork is valid based on
its dimensions (width and ratio).
Return `CANDIDATE_BAD` if the file is unusable.
Return `CANDIDATE_EXACT` if the file is usable as-is.
Return `CANDIDATE_DOWNSCALE` if the file must be resized.
"""
if not self.path:
return self.CANDIDATE_BAD
if not (extra['enforce_ratio'] or
extra['minwidth'] or
extra['maxwidth']):
return self.CANDIDATE_EXACT
# get_size returns None if no local imaging backend is available
if not self.size:
self.size = ArtResizer.shared.get_size(self.path)
self._log.debug(u'image size: {}', self.size)
if not self.size:
self._log.warning(u'Could not get size of image (please see '
u'documentation for dependencies). '
u'The configuration options `minwidth` and '
u'`enforce_ratio` may be violated.')
return self.CANDIDATE_EXACT
short_edge = min(self.size)
long_edge = max(self.size)
# Check minimum size.
if extra['minwidth'] and self.size[0] < extra['minwidth']:
self._log.debug(u'image too small ({} < {})',
self.size[0], extra['minwidth'])
return self.CANDIDATE_BAD
# Check aspect ratio.
edge_diff = long_edge - short_edge
if extra['enforce_ratio']:
if extra['margin_px']:
if edge_diff > extra['margin_px']:
self._log.debug(u'image is not close enough to being '
u'square, ({} - {} > {})',
long_edge, short_edge, extra['margin_px'])
return self.CANDIDATE_BAD
elif extra['margin_percent']:
margin_px = extra['margin_percent'] * long_edge
if edge_diff > margin_px:
self._log.debug(u'image is not close enough to being '
u'square, ({} - {} > {})',
long_edge, short_edge, margin_px)
return self.CANDIDATE_BAD
elif edge_diff:
# also reached for margin_px == 0 and margin_percent == 0.0
self._log.debug(u'image is not square ({} != {})',
self.size[0], self.size[1])
return self.CANDIDATE_BAD
# Check maximum size.
if extra['maxwidth'] and self.size[0] > extra['maxwidth']:
self._log.debug(u'image needs resizing ({} > {})',
self.size[0], extra['maxwidth'])
return self.CANDIDATE_DOWNSCALE
return self.CANDIDATE_EXACT
def validate(self, extra):
self.check = self._validate(extra)
return self.check
def resize(self, extra):
if extra['maxwidth'] and self.check == self.CANDIDATE_DOWNSCALE:
self.path = ArtResizer.shared.resize(extra['maxwidth'], self.path)
def _logged_get(log, *args, **kwargs):
"""Like `requests.get`, but logs the effective URL to the specified
`log` at the `DEBUG` level.
Use the optional `message` parameter to specify what to log before
the URL. By default, the string is "getting URL".
Also sets the User-Agent header to indicate beets.
"""
# Use some arguments with the `send` call but most with the
# `Request` construction. This is a cheap, magic-filled way to
# emulate `requests.get` or, more pertinently,
# `requests.Session.request`.
req_kwargs = kwargs
send_kwargs = {}
for arg in ('stream', 'verify', 'proxies', 'cert', 'timeout'):
if arg in kwargs:
send_kwargs[arg] = req_kwargs.pop(arg)
# Our special logging message parameter.
if 'message' in kwargs:
message = kwargs.pop('message')
else:
message = 'getting URL'
req = requests.Request('GET', *args, **req_kwargs)
with requests.Session() as s:
s.headers = {'User-Agent': 'beets'}
prepped = s.prepare_request(req)
log.debug('{}: {}', message, prepped.url)
return s.send(prepped, **send_kwargs)
class RequestMixin(object):
"""Adds a Requests wrapper to the class that uses the logger, which
must be named `self._log`.
"""
def request(self, *args, **kwargs):
"""Like `requests.get`, but uses the logger `self._log`.
See also `_logged_get`.
"""
return _logged_get(self._log, *args, **kwargs)
# ART SOURCES ################################################################
class ArtSource(RequestMixin):
def __init__(self, log, config):
self._log = log
self._config = config
def get(self, album, extra):
raise NotImplementedError()
def _candidate(self, **kwargs):
return Candidate(source=self, log=self._log, **kwargs)
def fetch_image(self, candidate, extra):
raise NotImplementedError()
class LocalArtSource(ArtSource):
IS_LOCAL = True
LOC_STR = u'local'
def fetch_image(self, candidate, extra):
pass
class RemoteArtSource(ArtSource):
IS_LOCAL = False
LOC_STR = u'remote'
def fetch_image(self, candidate, extra):
"""Downloads an image from a URL and checks whether it seems to
actually be an image. If so, returns a path to the downloaded image.
Otherwise, returns None.
"""
if extra['maxwidth']:
candidate.url = ArtResizer.shared.proxy_url(extra['maxwidth'],
candidate.url)
try:
with closing(self.request(candidate.url, stream=True,
message=u'downloading image')) as resp:
if 'Content-Type' not in resp.headers \
or resp.headers['Content-Type'] not in CONTENT_TYPES:
self._log.debug(
u'not a supported image: {}',
resp.headers.get('Content-Type') or u'no content type',
)
candidate.path = None
return
# Generate a temporary file with the correct extension.
with NamedTemporaryFile(suffix=DOWNLOAD_EXTENSION,
delete=False) as fh:
for chunk in resp.iter_content(chunk_size=1024):
fh.write(chunk)
self._log.debug(u'downloaded art to: {0}',
util.displayable_path(fh.name))
candidate.path = fh.name
return
except (IOError, requests.RequestException, TypeError) as exc:
# Handling TypeError works around a urllib3 bug:
# https://github.com/shazow/urllib3/issues/556
self._log.debug(u'error fetching art: {}', exc)
candidate.path = None
return
class CoverArtArchive(RemoteArtSource):
NAME = u"Cover Art Archive"
URL = 'http://coverartarchive.org/release/{mbid}/front'
GROUP_URL = 'http://coverartarchive.org/release-group/{mbid}/front'
def get(self, album, extra):
"""Return the Cover Art Archive and Cover Art Archive release group URLs
using album MusicBrainz release ID and release group ID.
"""
if album.mb_albumid:
yield self._candidate(url=self.URL.format(mbid=album.mb_albumid),
match=Candidate.MATCH_EXACT)
if album.mb_releasegroupid:
yield self._candidate(
url=self.GROUP_URL.format(mbid=album.mb_releasegroupid),
match=Candidate.MATCH_FALLBACK)
class Amazon(RemoteArtSource):
NAME = u"Amazon"
URL = 'http://images.amazon.com/images/P/%s.%02i.LZZZZZZZ.jpg'
INDICES = (1, 2)
def get(self, album, extra):
"""Generate URLs using Amazon ID (ASIN) string.
"""
if album.asin:
for index in self.INDICES:
yield self._candidate(url=self.URL % (album.asin, index),
match=Candidate.MATCH_EXACT)
class AlbumArtOrg(RemoteArtSource):
NAME = u"AlbumArt.org scraper"
URL = 'http://www.albumart.org/index_detail.php'
PAT = r'href\s*=\s*"([^>"]*)"[^>]*title\s*=\s*"View larger image"'
def get(self, album, extra):
"""Return art URL from AlbumArt.org using album ASIN.
"""
if not album.asin:
return
# Get the page from albumart.org.
try:
resp = self.request(self.URL, params={'asin': album.asin})
self._log.debug(u'scraped art URL: {0}', resp.url)
except requests.RequestException:
self._log.debug(u'error scraping art page')
return
# Search the page for the image URL.
m = re.search(self.PAT, resp.text)
if m:
image_url = m.group(1)
yield self._candidate(url=image_url, match=Candidate.MATCH_EXACT)
else:
self._log.debug(u'no image found on page')
class GoogleImages(RemoteArtSource):
NAME = u"Google Images"
URL = u'https://www.googleapis.com/customsearch/v1'
def __init__(self, *args, **kwargs):
super(GoogleImages, self).__init__(*args, **kwargs)
self.key = self._config['google_key'].get(),
self.cx = self._config['google_engine'].get(),
def get(self, album, extra):
"""Return art URL from google custom search engine
given an album title and interpreter.
"""
if not (album.albumartist and album.album):
return
search_string = (album.albumartist + ',' + album.album).encode('utf-8')
response = self.request(self.URL, params={
'key': self.key,
'cx': self.cx,
'q': search_string,
'searchType': 'image'
})
# Get results using JSON.
try:
data = response.json()
except ValueError:
self._log.debug(u'google: error loading response: {}'
.format(response.text))
return
if 'error' in data:
reason = data['error']['errors'][0]['reason']
self._log.debug(u'google fetchart error: {0}', reason)
return
if 'items' in data.keys():
for item in data['items']:
yield self._candidate(url=item['link'],
match=Candidate.MATCH_EXACT)
class FanartTV(RemoteArtSource):
"""Art from fanart.tv requested using their API"""
NAME = u"fanart.tv"
API_URL = 'http://webservice.fanart.tv/v3/'
API_ALBUMS = API_URL + 'music/albums/'
PROJECT_KEY = '61a7d0ab4e67162b7a0c7c35915cd48e'
def __init__(self, *args, **kwargs):
super(FanartTV, self).__init__(*args, **kwargs)
self.client_key = self._config['fanarttv_key'].get()
def get(self, album, extra):
if not album.mb_releasegroupid:
return
response = self.request(
self.API_ALBUMS + album.mb_releasegroupid,
headers={'api-key': self.PROJECT_KEY,
'client-key': self.client_key})
try:
data = response.json()
except ValueError:
self._log.debug(u'fanart.tv: error loading response: {}',
response.text)
return
if u'status' in data and data[u'status'] == u'error':
if u'not found' in data[u'error message'].lower():
self._log.debug(u'fanart.tv: no image found')
elif u'api key' in data[u'error message'].lower():
self._log.warning(u'fanart.tv: Invalid API key given, please '
u'enter a valid one in your config file.')
else:
self._log.debug(u'fanart.tv: error on request: {}',
data[u'error message'])
return
matches = []
# can there be more than one releasegroupid per response?
for mbid, art in data.get(u'albums', dict()).items():
# there might be more art referenced, e.g. cdart, and an albumcover
# might not be present, even if the request was succesful
if album.mb_releasegroupid == mbid and u'albumcover' in art:
matches.extend(art[u'albumcover'])
# can this actually occur?
else:
self._log.debug(u'fanart.tv: unexpected mb_releasegroupid in '
u'response!')
matches.sort(key=lambda x: x[u'likes'], reverse=True)
for item in matches:
# fanart.tv has a strict size requirement for album art to be
# uploaded
yield self._candidate(url=item[u'url'],
match=Candidate.MATCH_EXACT,
size=(1000, 1000))
class ITunesStore(RemoteArtSource):
NAME = u"iTunes Store"
def get(self, album, extra):
"""Return art URL from iTunes Store given an album title.
"""
if not (album.albumartist and album.album):
return
search_string = (album.albumartist + ' ' + album.album).encode('utf-8')
try:
# Isolate bugs in the iTunes library while searching.
try:
results = itunes.search_album(search_string)
except Exception as exc:
self._log.debug(u'iTunes search failed: {0}', exc)
return
# Get the first match.
if results:
itunes_album = results[0]
else:
self._log.debug(u'iTunes search for {:r} got no results',
search_string)
return
if itunes_album.get_artwork()['100']:
small_url = itunes_album.get_artwork()['100']
big_url = small_url.replace('100x100', '1200x1200')
yield self._candidate(url=big_url, match=Candidate.MATCH_EXACT)
else:
self._log.debug(u'album has no artwork in iTunes Store')
except IndexError:
self._log.debug(u'album not found in iTunes Store')
class Wikipedia(RemoteArtSource):
NAME = u"Wikipedia (queried through DBpedia)"
DBPEDIA_URL = 'http://dbpedia.org/sparql'
WIKIPEDIA_URL = 'http://en.wikipedia.org/w/api.php'
SPARQL_QUERY = u'''PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX dbpprop: <http://dbpedia.org/property/>
PREFIX owl: <http://dbpedia.org/ontology/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT DISTINCT ?pageId ?coverFilename WHERE {{
?subject owl:wikiPageID ?pageId .
?subject dbpprop:name ?name .
?subject rdfs:label ?label .
{{ ?subject dbpprop:artist ?artist }}
UNION
{{ ?subject owl:artist ?artist }}
{{ ?artist foaf:name "{artist}"@en }}
UNION
{{ ?artist dbpprop:name "{artist}"@en }}
?subject rdf:type <http://dbpedia.org/ontology/Album> .
?subject dbpprop:cover ?coverFilename .
FILTER ( regex(?name, "{album}", "i") )
}}
Limit 1'''
def get(self, album, extra):
if not (album.albumartist and album.album):
return
# Find the name of the cover art filename on DBpedia
cover_filename, page_id = None, None
dbpedia_response = self.request(
self.DBPEDIA_URL,
params={
'format': 'application/sparql-results+json',
'timeout': 2500,
'query': self.SPARQL_QUERY.format(
artist=album.albumartist.title(), album=album.album)
},
headers={'content-type': 'application/json'},
)
try:
data = dbpedia_response.json()
results = data['results']['bindings']
if results:
cover_filename = 'File:' + results[0]['coverFilename']['value']
page_id = results[0]['pageId']['value']
else:
self._log.debug(u'wikipedia: album not found on dbpedia')
except (ValueError, KeyError, IndexError):
self._log.debug(u'wikipedia: error scraping dbpedia response: {}',
dbpedia_response.text)
# Ensure we have a filename before attempting to query wikipedia
if not (cover_filename and page_id):
return
# DBPedia sometimes provides an incomplete cover_filename, indicated
# by the filename having a space before the extension, e.g., 'foo .bar'
# An additional Wikipedia call can help to find the real filename.
# This may be removed once the DBPedia issue is resolved, see:
# https://github.com/dbpedia/extraction-framework/issues/396
if ' .' in cover_filename and \
'.' not in cover_filename.split(' .')[-1]:
self._log.debug(
u'wikipedia: dbpedia provided incomplete cover_filename'
)
lpart, rpart = cover_filename.rsplit(' .', 1)
# Query all the images in the page
wikipedia_response = self.request(
self.WIKIPEDIA_URL,
params={
'format': 'json',
'action': 'query',
'continue': '',
'prop': 'images',
'pageids': page_id,
},
headers={'content-type': 'application/json'},
)
# Try to see if one of the images on the pages matches our
# imcomplete cover_filename
try:
data = wikipedia_response.json()
results = data['query']['pages'][page_id]['images']
for result in results:
if re.match(re.escape(lpart) + r'.*?\.' + re.escape(rpart),
result['title']):
cover_filename = result['title']
break
except (ValueError, KeyError):
self._log.debug(
u'wikipedia: failed to retrieve a cover_filename'
)
return
# Find the absolute url of the cover art on Wikipedia
wikipedia_response = self.request(
self.WIKIPEDIA_URL,
params={
'format': 'json',
'action': 'query',
'continue': '',
'prop': 'imageinfo',
'iiprop': 'url',
'titles': cover_filename.encode('utf-8'),
},
headers={'content-type': 'application/json'},
)
try:
data = wikipedia_response.json()
results = data['query']['pages']
for _, result in results.iteritems():
image_url = result['imageinfo'][0]['url']
yield self._candidate(url=image_url,
match=Candidate.MATCH_EXACT)
except (ValueError, KeyError, IndexError):
self._log.debug(u'wikipedia: error scraping imageinfo')
return
class FileSystem(LocalArtSource):
NAME = u"Filesystem"
@staticmethod
def filename_priority(filename, cover_names):
"""Sort order for image names.
Return indexes of cover names found in the image filename. This
means that images with lower-numbered and more keywords will have
higher priority.
"""
return [idx for (idx, x) in enumerate(cover_names) if x in filename]
def get(self, album, extra):
"""Look for album art files in the specified directories.
"""
paths = extra['paths']
if not paths:
return
cover_names = extra['cover_names']
cover_pat = br"(\b|_)({0})(\b|_)".format(b'|'.join(cover_names))
cautious = extra['cautious']
for path in paths:
if not os.path.isdir(path):
continue
# Find all files that look like images in the directory.
images = []
for fn in os.listdir(path):
for ext in IMAGE_EXTENSIONS:
if fn.lower().endswith(b'.' + ext.encode('utf8')) and \
os.path.isfile(os.path.join(path, fn)):
images.append(fn)
# Look for "preferred" filenames.
images = sorted(images,
key=lambda x:
self.filename_priority(x, cover_names))
remaining = []
for fn in images:
if re.search(cover_pat, os.path.splitext(fn)[0], re.I):
self._log.debug(u'using well-named art file {0}',
util.displayable_path(fn))
yield self._candidate(path=os.path.join(path, fn),
match=Candidate.MATCH_EXACT)
else:
remaining.append(fn)
# Fall back to any image in the folder.
if remaining and not cautious:
self._log.debug(u'using fallback art file {0}',
util.displayable_path(remaining[0]))
yield self._candidate(path=os.path.join(path, remaining[0]),
match=Candidate.MATCH_FALLBACK)
# Try each source in turn.
SOURCES_ALL = [u'filesystem',
u'coverart', u'itunes', u'amazon', u'albumart',
u'wikipedia', u'google', u'fanarttv']
ART_SOURCES = {
u'filesystem': FileSystem,
u'coverart': CoverArtArchive,
u'itunes': ITunesStore,
u'albumart': AlbumArtOrg,
u'amazon': Amazon,
u'wikipedia': Wikipedia,
u'google': GoogleImages,
u'fanarttv': FanartTV,
}
SOURCE_NAMES = {v: k for k, v in ART_SOURCES.items()}
# PLUGIN LOGIC ###############################################################
class FetchArtPlugin(plugins.BeetsPlugin, RequestMixin):
PAT_PX = r"(0|[1-9][0-9]*)px"
PAT_PERCENT = r"(100(\.00?)?|[1-9]?[0-9](\.[0-9]{1,2})?)%"
def __init__(self):
super(FetchArtPlugin, self).__init__()
# Holds candidates corresponding to downloaded images between
# fetching them and placing them in the filesystem.
self.art_candidates = {}
self.config.add({
'auto': True,
'minwidth': 0,
'maxwidth': 0,
'enforce_ratio': False,
'cautious': False,
'cover_names': ['cover', 'front', 'art', 'album', 'folder'],
'sources': ['filesystem',
'coverart', 'itunes', 'amazon', 'albumart'],
'google_key': None,
'google_engine': u'001442825323518660753:hrh5ch1gjzm',
'fanarttv_key': None,
'store_source': False,
})
self.config['google_key'].redact = True
self.config['fanarttv_key'].redact = True
self.minwidth = self.config['minwidth'].get(int)
self.maxwidth = self.config['maxwidth'].get(int)
# allow both pixel and percentage-based margin specifications
self.enforce_ratio = self.config['enforce_ratio'].get(
confit.OneOf([bool,
confit.String(pattern=self.PAT_PX),
confit.String(pattern=self.PAT_PERCENT)]))
self.margin_px = None
self.margin_percent = None
if type(self.enforce_ratio) is unicode:
if self.enforce_ratio[-1] == u'%':
self.margin_percent = float(self.enforce_ratio[:-1]) / 100
elif self.enforce_ratio[-2:] == u'px':
self.margin_px = int(self.enforce_ratio[:-2])
else:
# shouldn't happen
raise confit.ConfigValueError()
self.enforce_ratio = True
cover_names = self.config['cover_names'].as_str_seq()
self.cover_names = map(util.bytestring_path, cover_names)
self.cautious = self.config['cautious'].get(bool)
self.store_source = self.config['store_source'].get(bool)
self.src_removed = (config['import']['delete'].get(bool) or
config['import']['move'].get(bool))
if self.config['auto']:
# Enable two import hooks when fetching is enabled.
self.import_stages = [self.fetch_art]
self.register_listener('import_task_files', self.assign_art)
available_sources = list(SOURCES_ALL)
if not HAVE_ITUNES and u'itunes' in available_sources:
available_sources.remove(u'itunes')
if not self.config['google_key'].get() and \
u'google' in available_sources:
available_sources.remove(u'google')
sources_name = plugins.sanitize_choices(
self.config['sources'].as_str_seq(), available_sources)
if 'remote_priority' in self.config:
self._log.warning(
u'The `fetch_art.remote_priority` configuration option has '
u'been deprecated, see the documentation.')
if self.config['remote_priority'].get(bool):
try:
sources_name.remove(u'filesystem')
sources_name.append(u'filesystem')
except ValueError:
pass
self.sources = [ART_SOURCES[s](self._log, self.config)
for s in sources_name]
# Asynchronous; after music is added to the library.
def fetch_art(self, session, task):
"""Find art for the album being imported."""
if task.is_album: # Only fetch art for full albums.
if task.album.artpath and os.path.isfile(task.album.artpath):
# Album already has art (probably a re-import); skip it.
return
if task.choice_flag == importer.action.ASIS:
# For as-is imports, don't search Web sources for art.
local = True
elif task.choice_flag == importer.action.APPLY:
# Search everywhere for art.
local = False
else:
# For any other choices (e.g., TRACKS), do nothing.
return
candidate = self.art_for_album(task.album, task.paths, local)
if candidate:
self.art_candidates[task] = candidate
def _set_art(self, album, candidate, delete=False):
album.set_art(candidate.path, delete)
if self.store_source:
# store the source of the chosen artwork in a flexible field
self._log.debug(
u"Storing art_source for {0.albumartist} - {0.album}",
album)
album.art_source = SOURCE_NAMES[type(candidate.source)]
album.store()
# Synchronous; after music files are put in place.
def assign_art(self, session, task):
"""Place the discovered art in the filesystem."""
if task in self.art_candidates:
candidate = self.art_candidates.pop(task)
self._set_art(task.album, candidate, not self.src_removed)
if self.src_removed:
task.prune(candidate.path)
# Manual album art fetching.
def commands(self):
cmd = ui.Subcommand('fetchart', help='download album art')
cmd.parser.add_option(
u'-f', u'--force', dest='force',
action='store_true', default=False,
help=u're-download art when already present'
)
def func(lib, opts, args):
self.batch_fetch_art(lib, lib.albums(ui.decargs(args)), opts.force)
cmd.func = func
return [cmd]
# Utilities converted from functions to methods on logging overhaul
def art_for_album(self, album, paths, local_only=False):
"""Given an Album object, returns a path to downloaded art for the
album (or None if no art is found). If `maxwidth`, then images are
resized to this maximum pixel size. If `local_only`, then only local
image files from the filesystem are returned; no network requests
are made.
"""
out = None
# all the information any of the sources might need
extra = {'paths': paths,
'cover_names': self.cover_names,
'cautious': self.cautious,
'enforce_ratio': self.enforce_ratio,
'margin_px': self.margin_px,
'margin_percent': self.margin_percent,
'minwidth': self.minwidth,
'maxwidth': self.maxwidth}
for source in self.sources:
if source.IS_LOCAL or not local_only:
self._log.debug(
u'trying source {0} for album {1.albumartist} - {1.album}',
SOURCE_NAMES[type(source)],
album,
)
# URLs might be invalid at this point, or the image may not
# fulfill the requirements
for candidate in source.get(album, extra):
source.fetch_image(candidate, extra)
if candidate.validate(extra):
out = candidate
self._log.debug(
u'using {0.LOC_STR} image {1}'.format(
source, util.displayable_path(out.path)))
break
if out:
break
if out:
out.resize(extra)
return out
def batch_fetch_art(self, lib, albums, force):
"""Fetch album art for each of the albums. This implements the manual
fetchart CLI command.
"""
for album in albums:
if album.artpath and not force and os.path.isfile(album.artpath):
message = ui.colorize('text_highlight_minor', u'has album art')
else:
# In ordinary invocations, look for images on the
# filesystem. When forcing, however, always go to the Web
# sources.
local_paths = None if force else [album.path]
candidate = self.art_for_album(album, local_paths)
if candidate:
self._set_art(album, candidate)
message = ui.colorize('text_success', u'found album art')
else:
message = ui.colorize('text_error', u'no art found')
self._log.info(u'{0}: {1}', album, message)