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fetchart: Use Cover Art Archive thumbnails

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The Cover Art Archive API offers pre-resized thumbnails of cover
art. If the `maxwidth` option of `fetchart` matches one of the
supported Cover Art Archive thumbnail sizes, and a thumbnail of
that size exists in the Cover Art Archive, fetch it directly
instead of fetching the full size image then resizing it.
This commit is contained in:
Mark Trolley 2020-06-28 16:04:29 -04:00
parent 533cc88df2
commit 0f767ffa66
2 changed files with 26 additions and 4 deletions
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27
beetsplug/fetchart.py
View file

@ -305,6 +305,7 @@ class RemoteArtSource(ArtSource):
class CoverArtArchive(RemoteArtSource):
NAME = u"Cover Art Archive"
VALID_MATCHING_CRITERIA = ['release', 'releasegroup']
VALID_THUMBNAIL_SIZES = [250, 500, 1200]
if util.SNI_SUPPORTED:
URL = 'https://coverartarchive.org/release/{mbid}/front'
@ -317,13 +318,31 @@ class CoverArtArchive(RemoteArtSource):
"""Return the Cover Art Archive and Cover Art Archive release group URLs
using album MusicBrainz release ID and release group ID.
"""
release_url = self.URL.format(mbid=album.mb_albumid)
release_group_url = self.GROUP_URL.format(mbid=album.mb_releasegroupid)
# Cover Art Archive API offers pre-resized thumbnails at several sizes.
# If the maxwidth config matches one of the already available sizes
# fetch it directly intead of fetching the full sized image and
# resizing it.
size_suffix = None
if plugin.maxwidth in self.VALID_THUMBNAIL_SIZES:
size_suffix = "-" + str(plugin.maxwidth)
if 'release' in self.match_by and album.mb_albumid:
yield self._candidate(url=self.URL.format(mbid=album.mb_albumid),
if size_suffix:
release_thumbnail_url = release_url + size_suffix
yield self._candidate(url=release_thumbnail_url,
match=Candidate.MATCH_EXACT)
yield self._candidate(url=release_url,
match=Candidate.MATCH_EXACT)
if 'releasegroup' in self.match_by and album.mb_releasegroupid:
yield self._candidate(
url=self.GROUP_URL.format(mbid=album.mb_releasegroupid),
match=Candidate.MATCH_FALLBACK)
if size_suffix:
release_group_thumbnail_url = release_group_url + size_suffix
yield self._candidate(url=release_group_thumbnail_url,
match=Candidate.MATCH_FALLBACK)
yield self._candidate(url=release_group_url,
match=Candidate.MATCH_FALLBACK)
class Amazon(RemoteArtSource):

3
docs/changelog.rst
View file

@ -217,6 +217,9 @@ Fixes:
results or fetched lyrics
:bug:`2805`
* Adapt to breaking changes in Python's ``ast`` module in 3.8
* :doc:`/plugins/fetchart`: Attempt to fetch pre-resized thumbnails from Cover
Art Archive if the ``maxwidth`` option matches one of the sizes supported by
the Cover Art Archive API.
For plugin developers: