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https://github.com/beetbox/beets.git
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110 lines
3.8 KiB
Python
110 lines
3.8 KiB
Python
# -*- coding: utf-8 -*-
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# This file is part of beets.
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# Copyright 2015, Bruno Cauet
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""Create freedesktop.org-compliant thumnails for album folders"""
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from __future__ import (division, absolute_import, print_function,
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unicode_literals)
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from hashlib import md5
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import os
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import shutil
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from pathlib import PurePosixPath
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from xdg import BaseDirectory
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from beets.plugins import BeetsPlugin
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from beets.ui import Subcommand, decargs
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from beets.util import syspath
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from beets.util.artresizer import ArtResizer
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BASE_DIR = os.path.join(BaseDirectory.xdg_cache_home, "thumbnails")
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NORMAL_DIR = os.path.join(BASE_DIR, "normal")
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LARGE_DIR = os.path.join(BASE_DIR, "large")
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class ThumbnailsPlugin(BeetsPlugin):
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def __init__(self):
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super(ThumbnailsPlugin, self).__init__()
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if self._check_local_ok():
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self.register_listener('album_imported', self.imported)
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def commands(self):
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thumbnails_command = Subcommand("thumbnails",
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help="Create album thumbnails")
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thumbnails_command.func = self.process_query
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return [thumbnails_command]
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def imported(self, lib, album):
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self.process_album(album)
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def process_query(self, lib, opts, args):
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if self._check_local_ok():
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for album in lib.albums(decargs(args)):
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self.process_album(album)
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def _check_local_ok(self):
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if not ArtResizer.local:
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self._log.warning("No local image resizing capabilities, "
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"cannot generate thumbnails")
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return False
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for dir in (NORMAL_DIR, LARGE_DIR):
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if not os.path.exists(dir):
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os.makedirs(dir)
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return True
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def process_album(self, album):
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"""Produce thumbnails for the album folder.
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"""
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self._log.debug(u'generating thumbnail for {0}', album)
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if not album.artpath:
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self._log.info(u'album {0} has no art', album)
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return
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size = ArtResizer.shared.get_size(album.artpath)
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if not size:
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self._log.warning('problem getting the picture size for {0}',
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album.artpath)
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return
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if max(size):
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self.make_cover_thumbnail(album, 256, LARGE_DIR)
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self.make_cover_thumbnail(album, 128, NORMAL_DIR)
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self._log.info(u'wrote thumbnail for {0}', album)
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def make_cover_thumbnail(self, album, size, target_dir):
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"""Make a thumbnail of given size for `album` and put it in
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`target_dir`.
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"""
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self._log.debug("building thumbnail to put on {0}", album.path)
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target = os.path.join(target_dir, self.thumbnail_file_name(album.path))
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resized = ArtResizer.shared.resize(size, album.artpath,
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syspath(target))
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# FIXME should add tags
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# see http://standards.freedesktop.org/thumbnail-spec/latest/x142.html
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shutil.move(resized, target)
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@staticmethod
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def thumbnail_file_name(path):
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# http://standards.freedesktop.org/thumbnail-spec/latest/x227.html
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uri = PurePosixPath(path).as_uri()
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hash = md5(uri).hexdigest()
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return "{0}.png".format(hash)
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