forked from rc/aircox
sound check
This commit is contained in:
bkfox
@ -25,233 +25,23 @@ Sox (and soxi).
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"""
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from argparse import RawTextHelpFormatter
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import concurrent.futures as futures
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import datetime
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import atexit
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import logging
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import os
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import re
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import time
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import mutagen
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from watchdog.observers import Observer
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from watchdog.events import PatternMatchingEventHandler, FileModifiedEvent
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from django.conf import settings as conf
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from django.core.management.base import BaseCommand, CommandError
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from django.utils import timezone as tz
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from django.utils.translation import gettext as _
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from django.core.management.base import BaseCommand
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from aircox import settings, utils
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from aircox.models import Diffusion, Program, Sound, Track
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from .import_playlist import PlaylistImport
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from aircox import settings
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from aircox.models import Program, Sound
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from aircox.management.sound_file import SoundFile
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from aircox.management.sound_monitor import MonitorHandler
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logger = logging.getLogger('aircox.commands')
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sound_path_re = re.compile(
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'^(?P<year>[0-9]{4})(?P<month>[0-9]{2})(?P<day>[0-9]{2})'
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'(_(?P<hour>[0-9]{2})h(?P<minute>[0-9]{2}))?'
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'(_(?P<n>[0-9]+))?'
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'_?[ -]*(?P<name>.*)$'
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)
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class SoundFile:
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path = None
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info = None
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path_info = None
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sound = None
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def __init__(self, path):
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self.path = path
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@property
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def sound_path(self):
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""" Relative path name """
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return self.path.replace(conf.MEDIA_ROOT + '/', '')
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def sync(self, sound=None, program=None, deleted=False, **kwargs):
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"""
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Update related sound model and save it.
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"""
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if deleted:
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sound = Sound.objects.path(self.path).first()
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if sound:
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sound.type = sound.TYPE_REMOVED
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sound.check_on_file()
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sound.save()
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return sound
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# FIXME: sound.program as not null
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if not program:
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program = Program.get_from_path(self.path)
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logger.info('program from path "%s" -> %s', self.path, program)
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kwargs['program_id'] = program.pk
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sound, created = Sound.objects.get_or_create(file=self.sound_path, defaults=kwargs) \
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if not sound else (sound, False)
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self.sound = sound
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sound.program = program
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if created or sound.check_on_file():
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logger.info('sound is new or have been modified -> %s', self.sound_path)
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self.read_path()
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sound.name = self.path_info.get('name')
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self.read_file_info()
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if self.info is not None:
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sound.duration = utils.seconds_to_time(self.info.info.length)
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# check for episode
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if sound.episode is None and self.read_path():
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self.find_episode(program)
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sound.save()
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# check for playlist
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self.find_playlist(sound)
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return sound
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def read_path(self):
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"""
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Parse file name to get info on the assumption it has the correct
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format (given in Command.help). Return True if path contains informations.
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"""
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if self.path_info:
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return 'year' in self.path_info
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name = os.path.splitext(os.path.basename(self.path))[0]
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match = sound_path_re.search(name)
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if match:
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path_info = match.groupdict()
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for k in ('year', 'month', 'day', 'hour', 'minute'):
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if path_info.get(k) is not None:
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path_info[k] = int(path_info[k])
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self.path_info = path_info
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return True
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else:
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self.path_info = {'name': name}
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return False
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def read_file_info(self):
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""" Read file information and metadata. """
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if os.path.exists(self.path):
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self.info = mutagen.File(self.path)
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else:
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self.info = None
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def find_episode(self, program):
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"""
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For a given program, check if there is an initial diffusion
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to associate to, using the date info we have. Update self.sound
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and save it consequently.
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We only allow initial diffusion since there should be no
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rerun.
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"""
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pi = self.path_info
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if 'year' not in pi or not self.sound or self.sound.episode:
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return None
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if pi.get('hour') is not None:
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date = tz.datetime(pi.get('year'), pi.get('month'), pi.get('day'),
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pi.get('hour') or 0, pi.get('minute') or 0)
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date = tz.get_current_timezone().localize(date)
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else:
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date = datetime.date(pi.get('year'), pi.get('month'), pi.get('day'))
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diffusion = program.diffusion_set.at(date).first()
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if not diffusion:
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return None
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logger.info('%s <--> %s', self.sound.file.name, str(diffusion.episode))
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self.sound.episode = diffusion.episode
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return diffusion
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def find_playlist(self, sound=None, use_meta=True):
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"""
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Find a playlist file corresponding to the sound path, such as:
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my_sound.ogg => my_sound.csv
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Use sound's file metadata if no corresponding playlist has been
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found and `use_meta` is True.
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"""
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if sound is None:
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sound = self.sound
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if sound.track_set.count() > 1:
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return
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# import playlist
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path_noext, ext = os.path.splitext(self.sound.file.path)
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path = path_noext + '.csv'
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if os.path.exists(path):
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PlaylistImport(path, sound=sound).run()
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# use metadata
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elif use_meta:
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if self.info is None:
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self.read_file_info()
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if self.info and self.info.tags:
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tags = self.info.tags
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title, artist, album, year = tuple(
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t and ', '.join(t) for t in (
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tags.get(k) for k in ('title', 'artist', 'album', 'year'))
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)
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title = title or (self.path_info and self.path_info.get('name')) or \
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os.path.basename(path_noext)
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info = '{} ({})'.format(album, year) if album and year else \
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album or year or ''
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track = Track(sound=sound,
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position=int(tags.get('tracknumber', 0)),
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title=title,
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artist=artist or _('unknown'),
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info=info)
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track.save()
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class MonitorHandler(PatternMatchingEventHandler):
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"""
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Event handler for watchdog, in order to be used in monitoring.
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"""
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pool = None
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def __init__(self, subdir, pool):
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"""
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subdir: AIRCOX_SOUND_ARCHIVES_SUBDIR or AIRCOX_SOUND_EXCERPTS_SUBDIR
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"""
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self.subdir = subdir
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self.pool = pool
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if self.subdir == settings.AIRCOX_SOUND_ARCHIVES_SUBDIR:
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self.sound_kwargs = {'type': Sound.TYPE_ARCHIVE}
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else:
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self.sound_kwargs = {'type': Sound.TYPE_EXCERPT}
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patterns = ['*/{}/*{}'.format(self.subdir, ext)
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for ext in settings.AIRCOX_SOUND_FILE_EXT]
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super().__init__(patterns=patterns, ignore_directories=True)
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def on_created(self, event):
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self.on_modified(event)
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def on_modified(self, event):
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logger.info('sound modified: %s', event.src_path)
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def updated(event, sound_kwargs):
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SoundFile(event.src_path).sync(**sound_kwargs)
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self.pool.submit(updated, event, self.sound_kwargs)
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def on_moved(self, event):
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logger.info('sound moved: %s -> %s', event.src_path, event.dest_path)
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def moved(event, sound_kwargs):
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sound = Sound.objects.filter(file=event.src_path)
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sound_file = SoundFile(event.dest_path) if not sound else sound
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sound_file.sync(**sound_kwargs)
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self.pool.submit(moved, event, self.sound_kwargs)
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def on_deleted(self, event):
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logger.info('sound deleted: %s', event.src_path)
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def deleted(event):
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SoundFile(event.src_path).sync(deleted=True)
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self.pool.submit(deleted, event)
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class Command(BaseCommand):
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help = __doc__
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