mirror of
https://github.com/beetbox/beets.git
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762 lines
25 KiB
Python
762 lines
25 KiB
Python
# This file is part of beets.
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# Copyright 2016, Jakob Schnitzer.
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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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"""Converts tracks or albums to external directory
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"""
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import logging
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import os
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import shlex
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import subprocess
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import tempfile
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import threading
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from string import Template
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from confuse import ConfigTypeError, Optional
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from beets import art, config, plugins, ui, util
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from beets.library import Item, parse_query_string
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from beets.plugins import BeetsPlugin
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from beets.util import arg_encoding, par_map
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from beets.util.artresizer import ArtResizer
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from beets.util.m3u import M3UFile
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_fs_lock = threading.Lock()
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_temp_files = [] # Keep track of temporary transcoded files for deletion.
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# Some convenient alternate names for formats.
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ALIASES = {
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"windows media": "wma",
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"vorbis": "ogg",
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}
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LOSSLESS_FORMATS = ["ape", "flac", "alac", "wave", "aiff"]
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def replace_ext(path, ext):
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"""Return the path with its extension replaced by `ext`.
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The new extension must not contain a leading dot.
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"""
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ext_dot = b"." + ext
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return os.path.splitext(path)[0] + ext_dot
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def get_format(fmt=None):
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"""Return the command template and the extension from the config."""
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if not fmt:
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fmt = config["convert"]["format"].as_str().lower()
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fmt = ALIASES.get(fmt, fmt)
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try:
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format_info = config["convert"]["formats"][fmt].get(dict)
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command = format_info["command"]
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extension = format_info.get("extension", fmt)
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except KeyError:
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raise ui.UserError(
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'convert: format {} needs the "command" field'.format(fmt)
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)
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except ConfigTypeError:
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command = config["convert"]["formats"][fmt].get(str)
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extension = fmt
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# Convenience and backwards-compatibility shortcuts.
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keys = config["convert"].keys()
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if "command" in keys:
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command = config["convert"]["command"].as_str()
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elif "opts" in keys:
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# Undocumented option for backwards compatibility with < 1.3.1.
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command = "ffmpeg -i $source -y {} $dest".format(
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config["convert"]["opts"].as_str()
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)
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if "extension" in keys:
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extension = config["convert"]["extension"].as_str()
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return (command.encode("utf-8"), extension.encode("utf-8"))
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def should_transcode(item, fmt):
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"""Determine whether the item should be transcoded as part of
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conversion (i.e., its bitrate is high or it has the wrong format).
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"""
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no_convert_queries = config["convert"]["no_convert"].as_str_seq()
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if no_convert_queries:
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for query_string in no_convert_queries:
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query, _ = parse_query_string(query_string, Item)
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if query.match(item):
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return False
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if config["convert"]["never_convert_lossy_files"] and not (
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item.format.lower() in LOSSLESS_FORMATS
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):
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return False
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maxbr = config["convert"]["max_bitrate"].get(Optional(int))
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if maxbr is not None and item.bitrate >= 1000 * maxbr:
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return True
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return fmt.lower() != item.format.lower()
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class ConvertPlugin(BeetsPlugin):
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def __init__(self):
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super().__init__()
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self.config.add(
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{
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"dest": None,
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"pretend": False,
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"link": False,
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"hardlink": False,
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"threads": os.cpu_count(),
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"format": "mp3",
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"id3v23": "inherit",
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"formats": {
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"aac": {
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"command": "ffmpeg -i $source -y -vn -acodec aac "
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"-aq 1 $dest",
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"extension": "m4a",
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},
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"alac": {
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"command": "ffmpeg -i $source -y -vn -acodec alac $dest",
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"extension": "m4a",
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},
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"flac": "ffmpeg -i $source -y -vn -acodec flac $dest",
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"mp3": "ffmpeg -i $source -y -vn -aq 2 $dest",
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"opus": "ffmpeg -i $source -y -vn -acodec libopus -ab 96k $dest",
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"ogg": "ffmpeg -i $source -y -vn -acodec libvorbis -aq 3 $dest",
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"wma": "ffmpeg -i $source -y -vn -acodec wmav2 -vn $dest",
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},
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"max_bitrate": None,
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"auto": False,
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"auto_keep": False,
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"tmpdir": None,
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"quiet": False,
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"embed": True,
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"paths": {},
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"no_convert": "",
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"never_convert_lossy_files": False,
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"copy_album_art": False,
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"album_art_maxwidth": 0,
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"delete_originals": False,
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"playlist": None,
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}
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)
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self.early_import_stages = [self.auto_convert, self.auto_convert_keep]
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self.register_listener("import_task_files", self._cleanup)
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def commands(self):
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cmd = ui.Subcommand("convert", help="convert to external location")
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cmd.parser.add_option(
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"-p",
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"--pretend",
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action="store_true",
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help="show actions but do nothing",
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)
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cmd.parser.add_option(
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"-t",
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"--threads",
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action="store",
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type="int",
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help="change the number of threads, \
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defaults to maximum available processors",
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)
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cmd.parser.add_option(
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"-k",
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"--keep-new",
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action="store_true",
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dest="keep_new",
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help="keep only the converted \
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and move the old files",
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)
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cmd.parser.add_option(
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"-d", "--dest", action="store", help="set the destination directory"
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)
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cmd.parser.add_option(
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"-f",
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"--format",
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action="store",
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dest="format",
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help="set the target format of the tracks",
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)
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cmd.parser.add_option(
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"-y",
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"--yes",
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action="store_true",
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dest="yes",
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help="do not ask for confirmation",
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)
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cmd.parser.add_option(
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"-l",
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"--link",
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action="store_true",
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dest="link",
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help="symlink files that do not \
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need transcoding.",
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)
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cmd.parser.add_option(
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"-H",
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"--hardlink",
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action="store_true",
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dest="hardlink",
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help="hardlink files that do not \
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need transcoding. Overrides --link.",
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)
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cmd.parser.add_option(
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"-m",
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"--playlist",
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action="store",
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help="""create an m3u8 playlist file containing
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the converted files. The playlist file will be
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saved below the destination directory, thus
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PLAYLIST could be a file name or a relative path.
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To ensure a working playlist when transferred to
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a different computer, or opened from an external
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drive, relative paths pointing to media files
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will be used.""",
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)
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cmd.parser.add_album_option()
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cmd.func = self.convert_func
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return [cmd]
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def auto_convert(self, config, task):
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if self.config["auto"]:
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par_map(
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lambda item: self.convert_on_import(config.lib, item),
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task.imported_items(),
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)
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def auto_convert_keep(self, config, task):
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if self.config["auto_keep"]:
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empty_opts = self.commands()[0].parser.get_default_values()
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(
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dest,
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threads,
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path_formats,
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fmt,
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pretend,
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hardlink,
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link,
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playlist,
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) = self._get_opts_and_config(empty_opts)
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items = task.imported_items()
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self._parallel_convert(
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dest,
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False,
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path_formats,
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fmt,
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pretend,
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link,
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hardlink,
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threads,
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items,
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)
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# Utilities converted from functions to methods on logging overhaul
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def encode(self, command, source, dest, pretend=False):
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"""Encode `source` to `dest` using command template `command`.
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Raises `subprocess.CalledProcessError` if the command exited with a
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non-zero status code.
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"""
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# The paths and arguments must be bytes.
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assert isinstance(command, bytes)
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assert isinstance(source, bytes)
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assert isinstance(dest, bytes)
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quiet = self.config["quiet"].get(bool)
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if not quiet and not pretend:
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self._log.info("Encoding {0}", util.displayable_path(source))
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command = command.decode(arg_encoding(), "surrogateescape")
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source = os.fsdecode(source)
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dest = os.fsdecode(dest)
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# Substitute $source and $dest in the argument list.
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args = shlex.split(command)
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encode_cmd = []
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for i, arg in enumerate(args):
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args[i] = Template(arg).safe_substitute(
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{
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"source": source,
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"dest": dest,
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}
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)
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encode_cmd.append(args[i].encode(util.arg_encoding()))
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if pretend:
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self._log.info("{0}", " ".join(ui.decargs(args)))
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return
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try:
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util.command_output(encode_cmd)
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except subprocess.CalledProcessError as exc:
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# Something went wrong (probably Ctrl+C), remove temporary files
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self._log.info(
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"Encoding {0} failed. Cleaning up...",
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util.displayable_path(source),
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)
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self._log.debug(
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"Command {0} exited with status {1}: {2}",
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args,
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exc.returncode,
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exc.output,
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)
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util.remove(dest)
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util.prune_dirs(os.path.dirname(dest))
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raise
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except OSError as exc:
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raise ui.UserError(
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"convert: couldn't invoke '{}': {}".format(
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" ".join(ui.decargs(args)), exc
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)
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)
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if not quiet and not pretend:
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self._log.info(
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"Finished encoding {0}", util.displayable_path(source)
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)
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def convert_item(
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self,
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dest_dir,
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keep_new,
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path_formats,
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fmt,
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pretend=False,
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link=False,
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hardlink=False,
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):
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"""A pipeline thread that converts `Item` objects from a
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library.
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"""
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command, ext = get_format(fmt)
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item, original, converted = None, None, None
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while True:
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item = yield (item, original, converted)
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dest = item.destination(basedir=dest_dir, path_formats=path_formats)
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# When keeping the new file in the library, we first move the
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# current (pristine) file to the destination. We'll then copy it
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# back to its old path or transcode it to a new path.
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if keep_new:
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original = dest
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converted = item.path
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if should_transcode(item, fmt):
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converted = replace_ext(converted, ext)
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else:
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original = item.path
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if should_transcode(item, fmt):
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dest = replace_ext(dest, ext)
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converted = dest
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# Ensure that only one thread tries to create directories at a
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# time. (The existence check is not atomic with the directory
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# creation inside this function.)
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if not pretend:
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with _fs_lock:
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util.mkdirall(dest)
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if os.path.exists(util.syspath(dest)):
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self._log.info(
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"Skipping {0} (target file exists)",
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util.displayable_path(item.path),
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)
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continue
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if keep_new:
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if pretend:
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self._log.info(
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"mv {0} {1}",
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util.displayable_path(item.path),
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util.displayable_path(original),
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)
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else:
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self._log.info(
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"Moving to {0}", util.displayable_path(original)
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)
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util.move(item.path, original)
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if should_transcode(item, fmt):
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linked = False
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try:
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self.encode(command, original, converted, pretend)
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except subprocess.CalledProcessError:
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continue
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else:
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linked = link or hardlink
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if pretend:
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msg = "ln" if hardlink else ("ln -s" if link else "cp")
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self._log.info(
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"{2} {0} {1}",
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util.displayable_path(original),
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util.displayable_path(converted),
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msg,
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)
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else:
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# No transcoding necessary.
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msg = (
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"Hardlinking"
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if hardlink
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else ("Linking" if link else "Copying")
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)
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self._log.info(
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"{1} {0}", util.displayable_path(item.path), msg
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)
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if hardlink:
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util.hardlink(original, converted)
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elif link:
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util.link(original, converted)
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else:
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util.copy(original, converted)
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if pretend:
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continue
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id3v23 = self.config["id3v23"].as_choice([True, False, "inherit"])
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if id3v23 == "inherit":
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id3v23 = None
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# Write tags from the database to the converted file.
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item.try_write(path=converted, id3v23=id3v23)
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if keep_new:
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# If we're keeping the transcoded file, read it again (after
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# writing) to get new bitrate, duration, etc.
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item.path = converted
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item.read()
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item.store() # Store new path and audio data.
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if self.config["embed"] and not linked:
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album = item._cached_album
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if album and album.artpath:
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maxwidth = self._get_art_resize(album.artpath)
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self._log.debug(
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"embedding album art from {}",
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util.displayable_path(album.artpath),
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)
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art.embed_item(
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self._log,
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item,
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album.artpath,
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maxwidth,
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itempath=converted,
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id3v23=id3v23,
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)
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if keep_new:
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plugins.send(
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"after_convert", item=item, dest=dest, keepnew=True
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)
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else:
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plugins.send(
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"after_convert", item=item, dest=converted, keepnew=False
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)
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def copy_album_art(
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self,
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album,
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dest_dir,
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path_formats,
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pretend=False,
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link=False,
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hardlink=False,
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):
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"""Copies or converts the associated cover art of the album. Album must
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have at least one track.
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"""
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if not album or not album.artpath:
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return
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album_item = album.items().get()
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# Album shouldn't be empty.
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if not album_item:
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return
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# Get the destination of the first item (track) of the album, we use
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# this function to format the path accordingly to path_formats.
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dest = album_item.destination(
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basedir=dest_dir, path_formats=path_formats
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)
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# Remove item from the path.
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dest = os.path.join(*util.components(dest)[:-1])
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dest = album.art_destination(album.artpath, item_dir=dest)
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if album.artpath == dest:
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return
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if not pretend:
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util.mkdirall(dest)
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if os.path.exists(util.syspath(dest)):
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self._log.info(
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"Skipping {0} (target file exists)",
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util.displayable_path(album.artpath),
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)
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return
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# Decide whether we need to resize the cover-art image.
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maxwidth = self._get_art_resize(album.artpath)
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# Either copy or resize (while copying) the image.
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if maxwidth is not None:
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self._log.info(
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"Resizing cover art from {0} to {1}",
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util.displayable_path(album.artpath),
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util.displayable_path(dest),
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)
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if not pretend:
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ArtResizer.shared.resize(maxwidth, album.artpath, dest)
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else:
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if pretend:
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msg = "ln" if hardlink else ("ln -s" if link else "cp")
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self._log.info(
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"{2} {0} {1}",
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util.displayable_path(album.artpath),
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util.displayable_path(dest),
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msg,
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)
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else:
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msg = (
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"Hardlinking"
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if hardlink
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else ("Linking" if link else "Copying")
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)
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self._log.info(
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"{2} cover art from {0} to {1}",
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util.displayable_path(album.artpath),
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util.displayable_path(dest),
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msg,
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)
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if hardlink:
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util.hardlink(album.artpath, dest)
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elif link:
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util.link(album.artpath, dest)
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else:
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util.copy(album.artpath, dest)
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def convert_func(self, lib, opts, args):
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(
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dest,
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threads,
|
|
path_formats,
|
|
fmt,
|
|
pretend,
|
|
hardlink,
|
|
link,
|
|
playlist,
|
|
) = self._get_opts_and_config(opts)
|
|
|
|
if opts.album:
|
|
albums = lib.albums(ui.decargs(args))
|
|
items = [i for a in albums for i in a.items()]
|
|
if not pretend:
|
|
for a in albums:
|
|
ui.print_(format(a, ""))
|
|
else:
|
|
items = list(lib.items(ui.decargs(args)))
|
|
if not pretend:
|
|
for i in items:
|
|
ui.print_(format(i, ""))
|
|
|
|
if not items:
|
|
self._log.error("Empty query result.")
|
|
return
|
|
if not (pretend or opts.yes or ui.input_yn("Convert? (Y/n)")):
|
|
return
|
|
|
|
if opts.album and self.config["copy_album_art"]:
|
|
for album in albums:
|
|
self.copy_album_art(
|
|
album, dest, path_formats, pretend, link, hardlink
|
|
)
|
|
|
|
self._parallel_convert(
|
|
dest,
|
|
opts.keep_new,
|
|
path_formats,
|
|
fmt,
|
|
pretend,
|
|
link,
|
|
hardlink,
|
|
threads,
|
|
items,
|
|
)
|
|
|
|
if playlist:
|
|
# Playlist paths are understood as relative to the dest directory.
|
|
pl_normpath = util.normpath(playlist)
|
|
pl_dir = os.path.dirname(pl_normpath)
|
|
self._log.info("Creating playlist file {0}", pl_normpath)
|
|
# Generates a list of paths to media files, ensures the paths are
|
|
# relative to the playlist's location and translates the unicode
|
|
# strings we get from item.destination to bytes.
|
|
items_paths = [
|
|
os.path.relpath(
|
|
util.bytestring_path(
|
|
item.destination(
|
|
basedir=dest,
|
|
path_formats=path_formats,
|
|
fragment=False,
|
|
)
|
|
),
|
|
pl_dir,
|
|
)
|
|
for item in items
|
|
]
|
|
if not pretend:
|
|
m3ufile = M3UFile(playlist)
|
|
m3ufile.set_contents(items_paths)
|
|
m3ufile.write()
|
|
|
|
def convert_on_import(self, lib, item):
|
|
"""Transcode a file automatically after it is imported into the
|
|
library.
|
|
"""
|
|
fmt = self.config["format"].as_str().lower()
|
|
if should_transcode(item, fmt):
|
|
command, ext = get_format()
|
|
|
|
# Create a temporary file for the conversion.
|
|
tmpdir = self.config["tmpdir"].get()
|
|
if tmpdir:
|
|
tmpdir = os.fsdecode(util.bytestring_path(tmpdir))
|
|
fd, dest = tempfile.mkstemp(os.fsdecode(b"." + ext), dir=tmpdir)
|
|
os.close(fd)
|
|
dest = util.bytestring_path(dest)
|
|
_temp_files.append(dest) # Delete the transcode later.
|
|
|
|
# Convert.
|
|
try:
|
|
self.encode(command, item.path, dest)
|
|
except subprocess.CalledProcessError:
|
|
return
|
|
|
|
# Change the newly-imported database entry to point to the
|
|
# converted file.
|
|
source_path = item.path
|
|
item.path = dest
|
|
item.write()
|
|
item.read() # Load new audio information data.
|
|
item.store()
|
|
|
|
if self.config["delete_originals"]:
|
|
self._log.log(
|
|
logging.DEBUG if self.config["quiet"] else logging.INFO,
|
|
"Removing original file {0}",
|
|
source_path,
|
|
)
|
|
util.remove(source_path, False)
|
|
|
|
def _get_art_resize(self, artpath):
|
|
"""For a given piece of album art, determine whether or not it needs
|
|
to be resized according to the user's settings. If so, returns the
|
|
new size. If not, returns None.
|
|
"""
|
|
newwidth = None
|
|
if self.config["album_art_maxwidth"]:
|
|
maxwidth = self.config["album_art_maxwidth"].get(int)
|
|
size = ArtResizer.shared.get_size(artpath)
|
|
self._log.debug("image size: {}", size)
|
|
if size:
|
|
if size[0] > maxwidth:
|
|
newwidth = maxwidth
|
|
else:
|
|
self._log.warning(
|
|
"Could not get size of image (please see "
|
|
"documentation for dependencies)."
|
|
)
|
|
return newwidth
|
|
|
|
def _cleanup(self, task, session):
|
|
for path in task.old_paths:
|
|
if path in _temp_files:
|
|
if os.path.isfile(util.syspath(path)):
|
|
util.remove(path)
|
|
_temp_files.remove(path)
|
|
|
|
def _get_opts_and_config(self, opts):
|
|
"""Returns parameters needed for convert function.
|
|
Get parameters from command line if available,
|
|
default to config if not available.
|
|
"""
|
|
dest = opts.dest or self.config["dest"].get()
|
|
if not dest:
|
|
raise ui.UserError("no convert destination set")
|
|
dest = util.bytestring_path(dest)
|
|
|
|
threads = opts.threads or self.config["threads"].get(int)
|
|
|
|
path_formats = ui.get_path_formats(self.config["paths"] or None)
|
|
|
|
fmt = opts.format or self.config["format"].as_str().lower()
|
|
|
|
playlist = opts.playlist or self.config["playlist"].get()
|
|
if playlist is not None:
|
|
playlist = os.path.join(dest, util.bytestring_path(playlist))
|
|
|
|
if opts.pretend is not None:
|
|
pretend = opts.pretend
|
|
else:
|
|
pretend = self.config["pretend"].get(bool)
|
|
|
|
if opts.hardlink is not None:
|
|
hardlink = opts.hardlink
|
|
link = False
|
|
elif opts.link is not None:
|
|
hardlink = False
|
|
link = opts.link
|
|
else:
|
|
hardlink = self.config["hardlink"].get(bool)
|
|
link = self.config["link"].get(bool)
|
|
|
|
return (
|
|
dest,
|
|
threads,
|
|
path_formats,
|
|
fmt,
|
|
pretend,
|
|
hardlink,
|
|
link,
|
|
playlist,
|
|
)
|
|
|
|
def _parallel_convert(
|
|
self,
|
|
dest,
|
|
keep_new,
|
|
path_formats,
|
|
fmt,
|
|
pretend,
|
|
link,
|
|
hardlink,
|
|
threads,
|
|
items,
|
|
):
|
|
"""Run the convert_item function for every items on as many thread as
|
|
defined in threads
|
|
"""
|
|
convert = [
|
|
self.convert_item(
|
|
dest, keep_new, path_formats, fmt, pretend, link, hardlink
|
|
)
|
|
for _ in range(threads)
|
|
]
|
|
pipe = util.pipeline.Pipeline([iter(items), convert])
|
|
pipe.run_parallel()
|