X-Git-Url: https://git.kaliko.me/?a=blobdiff_plain;ds=sidebyside;f=sima%2Fplugins%2Finternal%2Fgenre.py;fp=sima%2Fplugins%2Finternal%2Fgenre.py;h=808d96db07c04ba3e99eacf4eecd3fc025c2f388;hb=d6e8ace21cc07eeb274c4c9280b0fe35479befaf;hp=0000000000000000000000000000000000000000;hpb=dd0a2edf67b46436fe14550f01babc9f1c8e2765;p=mpd-sima.git

diff --git a/sima/plugins/internal/genre.py b/sima/plugins/internal/genre.py
new file mode 100644
index 0000000..808d96d
--- /dev/null
+++ b/sima/plugins/internal/genre.py
@@ -0,0 +1,122 @@
+# -*- coding: utf-8 -*-
+# Copyright (c) 2020-2021 kaliko <kaliko@azylum.org>
+#
+#  This file is part of sima
+#
+#  sima 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 3 of the License, or
+#  (at your option) any later version.
+#
+#  sima 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 sima.  If not, see <http://www.gnu.org/licenses/>.
+#
+#
+"""
+Add titles based on Genre tag
+"""
+
+# standard library import
+from collections import Counter
+from random import shuffle
+
+# third parties components
+
+# local import
+from ...lib.plugin import AdvancedPlugin
+from ...lib.meta import Artist, MetaContainer
+from ...utils.utils import PluginException
+
+
+def forge_filter(genre):
+    mpd_filter = f"(Genre == '{genre.strip()}')"
+    # Ensure there is at least an artist name
+    mpd_filter = f"({mpd_filter} AND (artist != ''))"
+    return mpd_filter
+
+
+class Genre(AdvancedPlugin):
+    """Add track based on tags content
+    """
+
+    def __init__(self, daemon):
+        super().__init__(daemon)
+        self._setup_tagsneeded()
+
+    def _setup_tagsneeded(self):
+        """Ensure needed tags are exposed by MPD"""
+        self.log.debug('%s plugin needs the following metadata: Genre', self)
+        self.player.needed_tags |= {'genre'}
+
+    def start(self):
+        if (0, 21, 0) > tuple(map(int, self.player.mpd_version.split('.'))):
+            self.log.warning('MPD protocol version: %s < 0.21.0',
+                             self.player.mpd_version)
+            self.log.error(
+                'Need at least MPD 0.21 to use Genre plugin (filters required)')
+            self.player.disconnect()
+            raise PluginException('MPD >= 0.21 required')
+
+    def fetch_genres(self):
+        pldepth = 4
+        nbgenres = 2
+        current_titles = self.player.playlist[-pldepth:]
+        genres = []
+        for track in current_titles:
+            if not track.genres:
+                self.log.debug('No genre found in %s', track)
+                continue
+            genres.extend(track.genres)
+        genres_analysis = Counter(genres)
+        if genres_analysis.most_common():
+            self.log.debug('Most common genres: %s', genres_analysis.most_common())
+        return dict(genres_analysis.most_common(nbgenres)).keys()
+
+    def callback_need_track(self):
+        candidates = []
+        queue_mode = self.plugin_conf.get('queue_mode', 'track')
+        target = self.plugin_conf.getint(f'{queue_mode}_to_add')
+        genres = self.fetch_genres()
+        if not genres:
+            self.log.warning('No genre tag set in current tracks!')
+            return []
+        self.log.info('Genre plugin looking for genre: %s', ' / '.join(genres))
+        artists = MetaContainer([])
+        for genre in genres:
+            mpd_filter = forge_filter(genre)
+            self.log.debug('mpd filter: %s', mpd_filter)
+            _ = self.player.list('artist', mpd_filter)
+            shuffle(_)
+            artists |= MetaContainer([Artist(name=a) for a in _])
+        if not artists:
+            self.log.info('Genre plugin found nothing to queue')
+            return []
+        artists = self.get_reorg_artists_list(artists)
+        self.log.debug('Genre plugin found: %s…', ' / '.join(map(str, artists[:4])))
+        for artist in artists:
+            self.log.debug('looking for %s', artist)
+            tracks = self.player.find_tracks(artist)
+            trk = self.filter_track(tracks)
+            if not trk:
+                continue
+            if queue_mode == 'track':
+                self.log.info('Genre plugin chose: {}'.format(trk))
+                candidates.append(trk)
+                if len(candidates) == target:
+                    break
+            else:
+                album = self.album_candidate(trk.Artist, unplayed=True)
+                if not album:
+                    continue
+                candidates.extend(self.player.find_tracks(album))
+                if len({t.album for t in candidates}) == target:
+                    break
+        return candidates
+
+# VIM MODLINE
+# vim: ai ts=4 sw=4 sts=4 expandtab