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- # -*- Mode: python; coding: utf-8; tab-width: 8; indent-tabs-mode: t; -*-
- #
- # Copyright (C) 2006 - Ed Catmur <ed@catmur.co.uk>
- #
- # This program is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 2, or (at your option)
- # any later version.
- #
- # The Rhythmbox authors hereby grant permission for non-GPL compatible
- # GStreamer plugins to be used and distributed together with GStreamer
- # and Rhythmbox. This permission is above and beyond the permissions granted
- # by the GPL license by which Rhythmbox is covered. If you modify this code
- # you may extend this exception to your version of the code, but you are not
- # obligated to do so. If you do not wish to do so, delete this exception
- # statement from your version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
-
- import os
- import rhythmdb
- import gnomevfs
- import rb
- import gobject
-
- IMAGE_NAMES = ["cover", "album", "albumart", ".folder", "folder"]
- LOAD_DIRECTORY_FLAGS = gnomevfs.FILE_INFO_GET_MIME_TYPE | gnomevfs.FILE_INFO_FORCE_FAST_MIME_TYPE | gnomevfs.FILE_INFO_FOLLOW_LINKS
- ITEMS_PER_NOTIFICATION = 10
- ART_SAVE_NAME = 'Cover.jpg'
- ART_SAVE_FORMAT = 'jpeg'
- ART_SAVE_SETTINGS = {"quality": "100"}
-
- def file_root (f_name):
- return os.path.splitext (f_name)[0].lower ()
-
- def shared_prefix_length (a, b):
- l = 0
- while a[l] == b[l]:
- l = l+1
- return l
-
-
- class LocalCoverArtSearch:
- def __init__ (self):
- pass
-
- def _load_dir_cb (self, handle, files, exception, (results, on_search_completed_cb, entry, args)):
- for f in files:
- if f.mime_type is None:
- pass
- elif f.mime_type.startswith ("image/") and f.permissions & gnomevfs.PERM_USER_READ:
- results.append (f.name)
- if exception:
- on_search_completed_cb (self, entry, results, *args)
- if not issubclass (exception, gnomevfs.EOFError):
- print "Error reading \"%s\": %s" % (self.uri.parent, exception)
-
- def search (self, db, entry, on_search_completed_cb, *args):
- self.uri = None
- try:
- self.uri = gnomevfs.URI (entry.get_playback_uri())
- except TypeError:
- pass
-
- if self.uri is None or self.uri.scheme == 'http':
- print 'not searching for local art for %s' % (self.uri)
- on_search_completed_cb (self, entry, [], *args)
- return
-
- self.artist = db.entry_get (entry, rhythmdb.PROP_ARTIST)
- self.album = db.entry_get (entry, rhythmdb.PROP_ALBUM)
-
- print 'searching for local art for %s' % (self.uri)
- gnomevfs.async.load_directory (self.uri.parent, self._load_dir_cb, LOAD_DIRECTORY_FLAGS, ITEMS_PER_NOTIFICATION, data=([], on_search_completed_cb, entry, args))
-
- def search_next (self):
- return False
-
- def get_best_match_urls (self, results):
- # Compare lower case, without file extension
- for name in [file_root (self.uri.short_name)] + IMAGE_NAMES:
- for f_name in results:
- if file_root (f_name) == name:
- yield self.uri.parent.append_file_name (f_name)
-
- # look for file names containing the artist and album (case-insensitive)
- # (mostly for jamendo downloads)
- artist = self.artist.lower()
- album = self.album.lower()
- for f_name in results:
- f_root = file_root (f_name).lower()
- if f_root.find (artist) != -1 and f_root.find (album) != -1:
- yield self.uri.parent.append_file_name (f_name).path
-
- # if that didn't work, look for the longest shared prefix
- # only accept matches longer than 2 to avoid weird false positives
- match = (2, None)
- for f_name in results:
- pl = shared_prefix_length(f_name, self.uri.short_name)
- if pl > match[0]:
- match = (pl, f_name)
-
- if match[1] is not None:
- yield self.uri.parent.append_file_name (match[1]).path
-
- def pixbuf_save (self, plexer, pixbuf, uri):
- gnomevfs.async.create (uri, plexer.send (), gnomevfs.OPEN_WRITE | gnomevfs.OPEN_TRUNCATE, False, 0644, gnomevfs.PRIORITY_DEFAULT)
- yield None
- _, (handle, result) = plexer.receive ()
- if result:
- print "Error creating \"%s\": %s" % (uri, result)
- return
- def pixbuf_cb (buf):
- data = [buf]
- status = []
- def write_coro (w_plexer):
- while data:
- buf = data.pop ()
- handle.write (buf, w_plexer.send ())
- yield None
- _, (_, requested, result, written) = w_plexer.receive ()
- if result:
- print "Error writing \"%s\": %s" % (uri, result)
- status.insert (0, False)
- return
- if written < requested:
- data.insert (0, buf[written:])
- status.insert (0, True)
- rb.Coroutine (write_coro).begin ()
- while not status:
- gobject.main_context_default ().iteration ()
- return status[0]
- pixbuf.save_to_callback (pixbuf_cb, ART_SAVE_FORMAT, ART_SAVE_SETTINGS)
- handle.close (plexer.send())
- yield None
- _, (_, result) = plexer.receive ()
- if result:
- print "Error closing \"%s\": %s" % (uri, result)
-
- def _save_dir_cb (self, handle, files, exception, (db, entry, pixbuf)):
- artist, album = [db.entry_get (entry, x) for x in [rhythmdb.PROP_ARTIST, rhythmdb.PROP_ALBUM]]
- for f in files:
- if f.mime_type.split ("/")[0] in ["image", "x-directory"]:
- continue
- uri = str (self.uri.parent.append_file_name (f.name))
- u_entry = db.entry_lookup_by_location (uri)
- if u_entry:
- u_artist, u_album = [db.entry_get (u_entry, x) for x in [rhythmdb.PROP_ARTIST, rhythmdb.PROP_ALBUM]]
- if album != u_album:
- print "Not saving local art; encountered media with different album (%s, %s, %s)" % (uri, u_artist, u_album)
- handle.cancel ()
- return
- continue
- print "Not saving local art; encountered unknown file (%s)" % uri
- handle.cancel ()
- return
- if exception:
- if issubclass (exception, gnomevfs.EOFError):
- art_uri = str (self.uri.parent.append_file_name (ART_SAVE_NAME))
- print "Saving local art to \"%s\"" % art_uri
- rb.Coroutine (self.pixbuf_save, pixbuf, art_uri).begin ()
- else:
- print "Error reading \"%s\": %s" % (self.uri.parent, exception)
-
- def save_pixbuf (self, db, entry, pixbuf):
- self.uri = None
- try:
- self.uri = gnomevfs.URI (entry.get_playback_uri())
- except TypeError:
- pass
-
- if self.uri is None or self.uri.scheme == 'http':
- print 'not saving local art for %s' % self.uri
- return
-
- print 'checking whether to save local art for %s' % self.uri
- gnomevfs.async.load_directory (self.uri.parent, self._save_dir_cb, LOAD_DIRECTORY_FLAGS, ITEMS_PER_NOTIFICATION, data=(db, entry, pixbuf))
-