beets/beetsplug/keyfinder.py

92 lines
3.2 KiB
Python

# -*- coding: utf-8 -*-
# This file is part of beets.
# Copyright 2016, Thomas Scholtes.
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
"""Uses the `KeyFinder` program to add the `initial_key` field.
"""
from __future__ import division, absolute_import, print_function
import os.path
import subprocess
from beets import ui
from beets import util
from beets.plugins import BeetsPlugin
class KeyFinderPlugin(BeetsPlugin):
def __init__(self):
super(KeyFinderPlugin, self).__init__()
self.config.add({
u'bin': u'KeyFinder',
u'auto': True,
u'overwrite': False,
})
if self.config['auto'].get(bool):
self.import_stages = [self.imported]
def commands(self):
cmd = ui.Subcommand('keyfinder',
help=u'detect and add initial key from audio')
cmd.func = self.command
return [cmd]
def command(self, lib, opts, args):
self.find_key(lib.items(ui.decargs(args)), write=ui.should_write())
def imported(self, session, task):
self.find_key(task.imported_items())
def find_key(self, items, write=False):
overwrite = self.config['overwrite'].get(bool)
command = [self.config['bin'].as_str()]
# The KeyFinder GUI program needs the -f flag before the path.
# keyfinder-cli is similar, but just wants the path with no flag.
if 'keyfinder-cli' not in os.path.basename(command[0]).lower():
command.append('-f')
for item in items:
if item['initial_key'] and not overwrite:
continue
try:
output = util.command_output(command + [util.syspath(
item.path)]).stdout
except (subprocess.CalledProcessError, OSError) as exc:
self._log.error(u'execution failed: {0}', exc)
continue
except UnicodeEncodeError:
# Workaround for Python 2 Windows bug.
# https://bugs.python.org/issue1759845
self._log.error(u'execution failed for Unicode path: {0!r}',
item.path)
continue
key_raw = output.rsplit(None, 1)[-1]
try:
key = util.text_string(key_raw)
except UnicodeDecodeError:
self._log.error(u'output is invalid UTF-8')
continue
item['initial_key'] = key
self._log.info(u'added computed initial key {0} for {1}',
key, util.displayable_path(item.path))
if write:
item.try_write()
item.store()