Remove obsolete packages
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tomkat83
parent
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# -*- coding: utf-8 -*-
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# Copyright (C) 2005 Michael Urman
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of version 2 of the GNU General Public License as
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# published by the Free Software Foundation.
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"""Mutagen aims to be an all purpose multimedia tagging library.
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::
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import mutagen.[format]
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metadata = mutagen.[format].Open(filename)
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`metadata` acts like a dictionary of tags in the file. Tags are generally a
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list of string-like values, but may have additional methods available
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depending on tag or format. They may also be entirely different objects
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for certain keys, again depending on format.
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"""
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from mutagen._util import MutagenError
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from mutagen._file import FileType, StreamInfo, File
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from mutagen._tags import Metadata, PaddingInfo
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version = (1, 31)
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"""Version tuple."""
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version_string = ".".join(map(str, version))
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"""Version string."""
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MutagenError
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FileType
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StreamInfo
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File
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Metadata
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PaddingInfo
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# -*- coding: utf-8 -*-
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# Copyright (C) 2013 Christoph Reiter
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of version 2 of the GNU General Public License as
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# published by the Free Software Foundation.
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import sys
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PY2 = sys.version_info[0] == 2
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PY3 = not PY2
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if PY2:
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from StringIO import StringIO
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BytesIO = StringIO
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from cStringIO import StringIO as cBytesIO
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from itertools import izip
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long_ = long
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integer_types = (int, long)
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string_types = (str, unicode)
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text_type = unicode
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xrange = xrange
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cmp = cmp
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chr_ = chr
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def endswith(text, end):
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return text.endswith(end)
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iteritems = lambda d: d.iteritems()
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itervalues = lambda d: d.itervalues()
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iterkeys = lambda d: d.iterkeys()
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iterbytes = lambda b: iter(b)
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exec("def reraise(tp, value, tb):\n raise tp, value, tb")
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def swap_to_string(cls):
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if "__str__" in cls.__dict__:
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cls.__unicode__ = cls.__str__
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if "__bytes__" in cls.__dict__:
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cls.__str__ = cls.__bytes__
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return cls
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elif PY3:
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from io import StringIO
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StringIO = StringIO
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from io import BytesIO
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cBytesIO = BytesIO
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long_ = int
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integer_types = (int,)
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string_types = (str,)
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text_type = str
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izip = zip
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xrange = range
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cmp = lambda a, b: (a > b) - (a < b)
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chr_ = lambda x: bytes([x])
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def endswith(text, end):
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# usefull for paths which can be both, str and bytes
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if isinstance(text, str):
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if not isinstance(end, str):
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end = end.decode("ascii")
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else:
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if not isinstance(end, bytes):
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end = end.encode("ascii")
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return text.endswith(end)
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iteritems = lambda d: iter(d.items())
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itervalues = lambda d: iter(d.values())
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iterkeys = lambda d: iter(d.keys())
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iterbytes = lambda b: (bytes([v]) for v in b)
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def reraise(tp, value, tb):
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raise tp(value).with_traceback(tb)
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def swap_to_string(cls):
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return cls
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# -*- coding: utf-8 -*-
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"""Constants used by Mutagen."""
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GENRES = [
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u"Blues",
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u"Classic Rock",
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u"Country",
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u"Dance",
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u"Disco",
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u"Funk",
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u"Grunge",
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u"Hip-Hop",
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u"Jazz",
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u"Metal",
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u"New Age",
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u"Oldies",
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u"Other",
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u"Pop",
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u"R&B",
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u"Rap",
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u"Reggae",
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u"Rock",
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u"Techno",
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u"Industrial",
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u"Alternative",
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u"Ska",
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u"Death Metal",
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u"Pranks",
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u"Soundtrack",
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u"Euro-Techno",
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u"Ambient",
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u"Trip-Hop",
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u"Vocal",
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u"Jazz+Funk",
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u"Fusion",
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u"Trance",
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u"Classical",
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u"Instrumental",
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u"Acid",
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u"House",
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u"Game",
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u"Sound Clip",
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u"Gospel",
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u"Noise",
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u"Alt. Rock",
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u"Bass",
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u"Soul",
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u"Punk",
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u"Space",
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u"Meditative",
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u"Instrumental Pop",
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u"Instrumental Rock",
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u"Ethnic",
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u"Gothic",
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u"Darkwave",
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u"Techno-Industrial",
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u"Electronic",
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u"Pop-Folk",
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u"Eurodance",
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u"Dream",
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u"Southern Rock",
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u"Comedy",
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u"Cult",
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u"Gangsta Rap",
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u"Top 40",
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u"Christian Rap",
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u"Pop/Funk",
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u"Jungle",
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u"Native American",
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u"Cabaret",
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u"New Wave",
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u"Psychedelic",
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u"Rave",
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u"Showtunes",
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u"Trailer",
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u"Lo-Fi",
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u"Tribal",
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u"Acid Punk",
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u"Acid Jazz",
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u"Polka",
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u"Retro",
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u"Musical",
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u"Rock & Roll",
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u"Hard Rock",
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u"Folk",
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u"Folk-Rock",
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u"National Folk",
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u"Swing",
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u"Fast-Fusion",
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u"Bebop",
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u"Latin",
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u"Revival",
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u"Celtic",
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u"Bluegrass",
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u"Avantgarde",
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u"Gothic Rock",
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u"Progressive Rock",
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u"Psychedelic Rock",
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u"Symphonic Rock",
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u"Slow Rock",
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u"Big Band",
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u"Chorus",
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u"Easy Listening",
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u"Acoustic",
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u"Humour",
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u"Speech",
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u"Chanson",
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u"Opera",
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u"Chamber Music",
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u"Sonata",
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u"Symphony",
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u"Booty Bass",
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u"Primus",
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u"Porn Groove",
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u"Satire",
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u"Slow Jam",
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u"Club",
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u"Tango",
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u"Samba",
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u"Folklore",
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u"Ballad",
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u"Power Ballad",
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u"Rhythmic Soul",
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u"Freestyle",
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u"Duet",
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u"Punk Rock",
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u"Drum Solo",
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u"A Cappella",
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u"Euro-House",
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u"Dance Hall",
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u"Goa",
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u"Drum & Bass",
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u"Club-House",
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u"Hardcore",
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u"Terror",
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u"Indie",
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u"BritPop",
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u"Afro-Punk",
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u"Polsk Punk",
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u"Beat",
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u"Christian Gangsta Rap",
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u"Heavy Metal",
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u"Black Metal",
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u"Crossover",
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u"Contemporary Christian",
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u"Christian Rock",
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u"Merengue",
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u"Salsa",
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u"Thrash Metal",
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u"Anime",
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u"JPop",
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u"Synthpop",
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u"Abstract",
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u"Art Rock",
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u"Baroque",
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u"Bhangra",
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u"Big Beat",
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u"Breakbeat",
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u"Chillout",
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u"Downtempo",
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u"Dub",
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u"EBM",
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u"Eclectic",
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u"Electro",
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u"Electroclash",
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u"Emo",
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u"Experimental",
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u"Garage",
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u"Global",
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u"IDM",
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u"Illbient",
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u"Industro-Goth",
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u"Jam Band",
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u"Krautrock",
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u"Leftfield",
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u"Lounge",
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u"Math Rock",
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u"New Romantic",
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u"Nu-Breakz",
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u"Post-Punk",
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u"Post-Rock",
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u"Psytrance",
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u"Shoegaze",
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u"Space Rock",
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u"Trop Rock",
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u"World Music",
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u"Neoclassical",
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u"Audiobook",
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u"Audio Theatre",
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u"Neue Deutsche Welle",
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u"Podcast",
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u"Indie Rock",
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u"G-Funk",
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u"Dubstep",
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u"Garage Rock",
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u"Psybient",
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]
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"""The ID3v1 genre list."""
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@ -1,253 +0,0 @@
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# Copyright (C) 2005 Michael Urman
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# -*- coding: utf-8 -*-
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of version 2 of the GNU General Public License as
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# published by the Free Software Foundation.
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import warnings
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from mutagen._util import DictMixin
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from mutagen._compat import izip
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class FileType(DictMixin):
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"""An abstract object wrapping tags and audio stream information.
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Attributes:
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* info -- stream information (length, bitrate, sample rate)
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* tags -- metadata tags, if any
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Each file format has different potential tags and stream
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information.
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FileTypes implement an interface very similar to Metadata; the
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dict interface, save, load, and delete calls on a FileType call
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the appropriate methods on its tag data.
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"""
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__module__ = "mutagen"
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info = None
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tags = None
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filename = None
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_mimes = ["application/octet-stream"]
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def __init__(self, filename=None, *args, **kwargs):
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if filename is None:
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warnings.warn("FileType constructor requires a filename",
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DeprecationWarning)
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else:
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self.load(filename, *args, **kwargs)
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def load(self, filename, *args, **kwargs):
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raise NotImplementedError
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def __getitem__(self, key):
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"""Look up a metadata tag key.
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If the file has no tags at all, a KeyError is raised.
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"""
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if self.tags is None:
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raise KeyError(key)
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else:
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return self.tags[key]
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def __setitem__(self, key, value):
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"""Set a metadata tag.
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If the file has no tags, an appropriate format is added (but
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not written until save is called).
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"""
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if self.tags is None:
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self.add_tags()
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self.tags[key] = value
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def __delitem__(self, key):
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"""Delete a metadata tag key.
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If the file has no tags at all, a KeyError is raised.
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"""
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if self.tags is None:
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raise KeyError(key)
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else:
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del(self.tags[key])
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def keys(self):
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"""Return a list of keys in the metadata tag.
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If the file has no tags at all, an empty list is returned.
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"""
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if self.tags is None:
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return []
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else:
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return self.tags.keys()
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def delete(self, filename=None):
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"""Remove tags from a file.
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In cases where the tagging format is independent of the file type
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(for example `mutagen.ID3`) all traces of the tagging format will
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be removed.
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In cases where the tag is part of the file type, all tags and
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padding will be removed.
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The tags attribute will be cleared as well if there is one.
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Does nothing if the file has no tags.
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:raises mutagen.MutagenError: if deleting wasn't possible
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"""
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if self.tags is not None:
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if filename is None:
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filename = self.filename
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else:
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warnings.warn(
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"delete(filename=...) is deprecated, reload the file",
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DeprecationWarning)
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return self.tags.delete(filename)
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def save(self, filename=None, **kwargs):
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"""Save metadata tags.
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:raises mutagen.MutagenError: if saving wasn't possible
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"""
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if filename is None:
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filename = self.filename
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else:
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warnings.warn(
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"save(filename=...) is deprecated, reload the file",
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DeprecationWarning)
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if self.tags is not None:
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return self.tags.save(filename, **kwargs)
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def pprint(self):
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"""Print stream information and comment key=value pairs."""
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stream = "%s (%s)" % (self.info.pprint(), self.mime[0])
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try:
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tags = self.tags.pprint()
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except AttributeError:
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return stream
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else:
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return stream + ((tags and "\n" + tags) or "")
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||||
|
||||
def add_tags(self):
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"""Adds new tags to the file.
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||||
|
||||
:raises mutagen.MutagenError: if tags already exist or adding is not
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||||
possible.
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||||
"""
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||||
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||||
raise NotImplementedError
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||||
@property
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def mime(self):
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||||
"""A list of mime types"""
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||||
|
||||
mimes = []
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||||
for Kind in type(self).__mro__:
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||||
for mime in getattr(Kind, '_mimes', []):
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||||
if mime not in mimes:
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mimes.append(mime)
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||||
return mimes
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||||
|
||||
@staticmethod
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||||
def score(filename, fileobj, header):
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||||
raise NotImplementedError
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||||
|
||||
|
||||
class StreamInfo(object):
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||||
"""Abstract stream information object.
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||||
|
||||
Provides attributes for length, bitrate, sample rate etc.
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||||
|
||||
See the implementations for details.
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||||
"""
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||||
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||||
__module__ = "mutagen"
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||||
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||||
def pprint(self):
|
||||
"""Print stream information"""
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||||
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||||
raise NotImplementedError
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||||
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||||
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||||
def File(filename, options=None, easy=False):
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||||
"""Guess the type of the file and try to open it.
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||||
|
||||
The file type is decided by several things, such as the first 128
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||||
bytes (which usually contains a file type identifier), the
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||||
filename extension, and the presence of existing tags.
|
||||
|
||||
If no appropriate type could be found, None is returned.
|
||||
|
||||
:param options: Sequence of :class:`FileType` implementations, defaults to
|
||||
all included ones.
|
||||
|
||||
:param easy: If the easy wrappers should be returnd if available.
|
||||
For example :class:`EasyMP3 <mp3.EasyMP3>` instead
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||||
of :class:`MP3 <mp3.MP3>`.
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||||
"""
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||||
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||||
if options is None:
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||||
from mutagen.asf import ASF
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||||
from mutagen.apev2 import APEv2File
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||||
from mutagen.flac import FLAC
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||||
if easy:
|
||||
from mutagen.easyid3 import EasyID3FileType as ID3FileType
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||||
else:
|
||||
from mutagen.id3 import ID3FileType
|
||||
if easy:
|
||||
from mutagen.mp3 import EasyMP3 as MP3
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else:
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from mutagen.mp3 import MP3
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||||
from mutagen.oggflac import OggFLAC
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from mutagen.oggspeex import OggSpeex
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||||
from mutagen.oggtheora import OggTheora
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||||
from mutagen.oggvorbis import OggVorbis
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||||
from mutagen.oggopus import OggOpus
|
||||
if easy:
|
||||
from mutagen.trueaudio import EasyTrueAudio as TrueAudio
|
||||
else:
|
||||
from mutagen.trueaudio import TrueAudio
|
||||
from mutagen.wavpack import WavPack
|
||||
if easy:
|
||||
from mutagen.easymp4 import EasyMP4 as MP4
|
||||
else:
|
||||
from mutagen.mp4 import MP4
|
||||
from mutagen.musepack import Musepack
|
||||
from mutagen.monkeysaudio import MonkeysAudio
|
||||
from mutagen.optimfrog import OptimFROG
|
||||
from mutagen.aiff import AIFF
|
||||
from mutagen.aac import AAC
|
||||
options = [MP3, TrueAudio, OggTheora, OggSpeex, OggVorbis, OggFLAC,
|
||||
FLAC, AIFF, APEv2File, MP4, ID3FileType, WavPack,
|
||||
Musepack, MonkeysAudio, OptimFROG, ASF, OggOpus, AAC]
|
||||
|
||||
if not options:
|
||||
return None
|
||||
|
||||
with open(filename, "rb") as fileobj:
|
||||
header = fileobj.read(128)
|
||||
# Sort by name after score. Otherwise import order affects
|
||||
# Kind sort order, which affects treatment of things with
|
||||
# equals scores.
|
||||
results = [(Kind.score(filename, fileobj, header), Kind.__name__)
|
||||
for Kind in options]
|
||||
|
||||
results = list(izip(results, options))
|
||||
results.sort()
|
||||
(score, name), Kind = results[-1]
|
||||
if score > 0:
|
||||
return Kind(filename)
|
||||
else:
|
||||
return None
|
||||
|
|
@ -1,420 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright 2015 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""
|
||||
http://www.codeproject.com/Articles/8295/MPEG-Audio-Frame-Header
|
||||
http://wiki.hydrogenaud.io/index.php?title=MP3
|
||||
"""
|
||||
|
||||
from functools import partial
|
||||
|
||||
from ._util import cdata, BitReader
|
||||
from ._compat import xrange, iterbytes, cBytesIO
|
||||
|
||||
|
||||
class LAMEError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class LAMEHeader(object):
|
||||
"""http://gabriel.mp3-tech.org/mp3infotag.html"""
|
||||
|
||||
vbr_method = 0
|
||||
"""0: unknown, 1: CBR, 2: ABR, 3/4/5: VBR, others: see the docs"""
|
||||
|
||||
lowpass_filter = 0
|
||||
"""lowpass filter value in Hz. 0 means unknown"""
|
||||
|
||||
quality = -1
|
||||
"""Encoding quality: 0..9"""
|
||||
|
||||
vbr_quality = -1
|
||||
"""VBR quality: 0..9"""
|
||||
|
||||
track_peak = None
|
||||
"""Peak signal amplitude as float. None if unknown."""
|
||||
|
||||
track_gain_origin = 0
|
||||
"""see the docs"""
|
||||
|
||||
track_gain_adjustment = None
|
||||
"""Track gain adjustment as float (for 89db replay gain) or None"""
|
||||
|
||||
album_gain_origin = 0
|
||||
"""see the docs"""
|
||||
|
||||
album_gain_adjustment = None
|
||||
"""Album gain adjustment as float (for 89db replay gain) or None"""
|
||||
|
||||
encoding_flags = 0
|
||||
"""see docs"""
|
||||
|
||||
ath_type = -1
|
||||
"""see docs"""
|
||||
|
||||
bitrate = -1
|
||||
"""Bitrate in kbps. For VBR the minimum bitrate, for anything else
|
||||
(CBR, ABR, ..) the target bitrate.
|
||||
"""
|
||||
|
||||
encoder_delay_start = 0
|
||||
"""Encoder delay in samples"""
|
||||
|
||||
encoder_padding_end = 0
|
||||
"""Padding in samples added at the end"""
|
||||
|
||||
source_sample_frequency_enum = -1
|
||||
"""see docs"""
|
||||
|
||||
unwise_setting_used = False
|
||||
"""see docs"""
|
||||
|
||||
stereo_mode = 0
|
||||
"""see docs"""
|
||||
|
||||
noise_shaping = 0
|
||||
"""see docs"""
|
||||
|
||||
mp3_gain = 0
|
||||
"""Applied MP3 gain -127..127. Factor is 2 ** (mp3_gain / 4)"""
|
||||
|
||||
surround_info = 0
|
||||
"""see docs"""
|
||||
|
||||
preset_used = 0
|
||||
"""lame preset"""
|
||||
|
||||
music_length = 0
|
||||
"""Length in bytes excluding any ID3 tags"""
|
||||
|
||||
music_crc = -1
|
||||
"""CRC16 of the data specified by music_length"""
|
||||
|
||||
header_crc = -1
|
||||
"""CRC16 of this header and everything before (not checked)"""
|
||||
|
||||
def __init__(self, xing, fileobj):
|
||||
"""Raises LAMEError if parsing fails"""
|
||||
|
||||
payload = fileobj.read(27)
|
||||
if len(payload) != 27:
|
||||
raise LAMEError("Not enough data")
|
||||
|
||||
# extended lame header
|
||||
r = BitReader(cBytesIO(payload))
|
||||
revision = r.bits(4)
|
||||
if revision != 0:
|
||||
raise LAMEError("unsupported header revision %d" % revision)
|
||||
|
||||
self.vbr_method = r.bits(4)
|
||||
self.lowpass_filter = r.bits(8) * 100
|
||||
|
||||
# these have a different meaning for lame; expose them again here
|
||||
self.quality = (100 - xing.vbr_scale) % 10
|
||||
self.vbr_quality = (100 - xing.vbr_scale) // 10
|
||||
|
||||
track_peak_data = r.bytes(4)
|
||||
if track_peak_data == b"\x00\x00\x00\x00":
|
||||
self.track_peak = None
|
||||
else:
|
||||
# see PutLameVBR() in LAME's VbrTag.c
|
||||
self.track_peak = (
|
||||
cdata.uint32_be(track_peak_data) - 0.5) / 2 ** 23
|
||||
track_gain_type = r.bits(3)
|
||||
self.track_gain_origin = r.bits(3)
|
||||
sign = r.bits(1)
|
||||
gain_adj = r.bits(9) / 10.0
|
||||
if sign:
|
||||
gain_adj *= -1
|
||||
if track_gain_type == 1:
|
||||
self.track_gain_adjustment = gain_adj
|
||||
else:
|
||||
self.track_gain_adjustment = None
|
||||
assert r.is_aligned()
|
||||
|
||||
album_gain_type = r.bits(3)
|
||||
self.album_gain_origin = r.bits(3)
|
||||
sign = r.bits(1)
|
||||
album_gain_adj = r.bits(9) / 10.0
|
||||
if album_gain_type == 2:
|
||||
self.album_gain_adjustment = album_gain_adj
|
||||
else:
|
||||
self.album_gain_adjustment = None
|
||||
|
||||
self.encoding_flags = r.bits(4)
|
||||
self.ath_type = r.bits(4)
|
||||
|
||||
self.bitrate = r.bits(8)
|
||||
|
||||
self.encoder_delay_start = r.bits(12)
|
||||
self.encoder_padding_end = r.bits(12)
|
||||
|
||||
self.source_sample_frequency_enum = r.bits(2)
|
||||
self.unwise_setting_used = r.bits(1)
|
||||
self.stereo_mode = r.bits(3)
|
||||
self.noise_shaping = r.bits(2)
|
||||
|
||||
sign = r.bits(1)
|
||||
mp3_gain = r.bits(7)
|
||||
if sign:
|
||||
mp3_gain *= -1
|
||||
self.mp3_gain = mp3_gain
|
||||
|
||||
r.skip(2)
|
||||
self.surround_info = r.bits(3)
|
||||
self.preset_used = r.bits(11)
|
||||
self.music_length = r.bits(32)
|
||||
self.music_crc = r.bits(16)
|
||||
|
||||
self.header_crc = r.bits(16)
|
||||
assert r.is_aligned()
|
||||
|
||||
@classmethod
|
||||
def parse_version(cls, fileobj):
|
||||
"""Returns a version string and True if a LAMEHeader follows.
|
||||
The passed file object will be positioned right before the
|
||||
lame header if True.
|
||||
|
||||
Raises LAMEError if there is no lame version info.
|
||||
"""
|
||||
|
||||
# http://wiki.hydrogenaud.io/index.php?title=LAME_version_string
|
||||
|
||||
data = fileobj.read(20)
|
||||
if len(data) != 20:
|
||||
raise LAMEError("Not a lame header")
|
||||
if not data.startswith((b"LAME", b"L3.99")):
|
||||
raise LAMEError("Not a lame header")
|
||||
|
||||
data = data.lstrip(b"EMAL")
|
||||
major, data = data[0:1], data[1:].lstrip(b".")
|
||||
minor = b""
|
||||
for c in iterbytes(data):
|
||||
if not c.isdigit():
|
||||
break
|
||||
minor += c
|
||||
data = data[len(minor):]
|
||||
|
||||
try:
|
||||
major = int(major.decode("ascii"))
|
||||
minor = int(minor.decode("ascii"))
|
||||
except ValueError:
|
||||
raise LAMEError
|
||||
|
||||
# the extended header was added sometimes in the 3.90 cycle
|
||||
# e.g. "LAME3.90 (alpha)" should still stop here.
|
||||
# (I have seen such a file)
|
||||
if (major, minor) < (3, 90) or (
|
||||
(major, minor) == (3, 90) and data[-11:-10] == b"("):
|
||||
flag = data.strip(b"\x00").rstrip().decode("ascii")
|
||||
return u"%d.%d%s" % (major, minor, flag), False
|
||||
|
||||
if len(data) <= 11:
|
||||
raise LAMEError("Invalid version: too long")
|
||||
|
||||
flag = data[:-11].rstrip(b"\x00")
|
||||
|
||||
flag_string = u""
|
||||
patch = u""
|
||||
if flag == b"a":
|
||||
flag_string = u" (alpha)"
|
||||
elif flag == b"b":
|
||||
flag_string = u" (beta)"
|
||||
elif flag == b"r":
|
||||
patch = u".1+"
|
||||
elif flag == b" ":
|
||||
if (major, minor) > (3, 96):
|
||||
patch = u".0"
|
||||
else:
|
||||
patch = u".0+"
|
||||
elif flag == b"" or flag == b".":
|
||||
patch = u".0+"
|
||||
else:
|
||||
flag_string = u" (?)"
|
||||
|
||||
# extended header, seek back to 9 bytes for the caller
|
||||
fileobj.seek(-11, 1)
|
||||
|
||||
return u"%d.%d%s%s" % (major, minor, patch, flag_string), True
|
||||
|
||||
|
||||
class XingHeaderError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class XingHeaderFlags(object):
|
||||
FRAMES = 0x1
|
||||
BYTES = 0x2
|
||||
TOC = 0x4
|
||||
VBR_SCALE = 0x8
|
||||
|
||||
|
||||
class XingHeader(object):
|
||||
|
||||
frames = -1
|
||||
"""Number of frames, -1 if unknown"""
|
||||
|
||||
bytes = -1
|
||||
"""Number of bytes, -1 if unknown"""
|
||||
|
||||
toc = []
|
||||
"""List of 100 file offsets in percent encoded as 0-255. E.g. entry
|
||||
50 contains the file offset in percent at 50% play time.
|
||||
Empty if unknown.
|
||||
"""
|
||||
|
||||
vbr_scale = -1
|
||||
"""VBR quality indicator 0-100. -1 if unknown"""
|
||||
|
||||
lame_header = None
|
||||
"""A LAMEHeader instance or None"""
|
||||
|
||||
lame_version = u""
|
||||
"""The version of the LAME encoder e.g. '3.99.0'. Empty if unknown"""
|
||||
|
||||
is_info = False
|
||||
"""If the header started with 'Info' and not 'Xing'"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
"""Parses the Xing header or raises XingHeaderError.
|
||||
|
||||
The file position after this returns is undefined.
|
||||
"""
|
||||
|
||||
data = fileobj.read(8)
|
||||
if len(data) != 8 or data[:4] not in (b"Xing", b"Info"):
|
||||
raise XingHeaderError("Not a Xing header")
|
||||
|
||||
self.is_info = (data[:4] == b"Info")
|
||||
|
||||
flags = cdata.uint32_be_from(data, 4)[0]
|
||||
|
||||
if flags & XingHeaderFlags.FRAMES:
|
||||
data = fileobj.read(4)
|
||||
if len(data) != 4:
|
||||
raise XingHeaderError("Xing header truncated")
|
||||
self.frames = cdata.uint32_be(data)
|
||||
|
||||
if flags & XingHeaderFlags.BYTES:
|
||||
data = fileobj.read(4)
|
||||
if len(data) != 4:
|
||||
raise XingHeaderError("Xing header truncated")
|
||||
self.bytes = cdata.uint32_be(data)
|
||||
|
||||
if flags & XingHeaderFlags.TOC:
|
||||
data = fileobj.read(100)
|
||||
if len(data) != 100:
|
||||
raise XingHeaderError("Xing header truncated")
|
||||
self.toc = list(bytearray(data))
|
||||
|
||||
if flags & XingHeaderFlags.VBR_SCALE:
|
||||
data = fileobj.read(4)
|
||||
if len(data) != 4:
|
||||
raise XingHeaderError("Xing header truncated")
|
||||
self.vbr_scale = cdata.uint32_be(data)
|
||||
|
||||
try:
|
||||
self.lame_version, has_header = LAMEHeader.parse_version(fileobj)
|
||||
if has_header:
|
||||
self.lame_header = LAMEHeader(self, fileobj)
|
||||
except LAMEError:
|
||||
pass
|
||||
|
||||
@classmethod
|
||||
def get_offset(cls, info):
|
||||
"""Calculate the offset to the Xing header from the start of the
|
||||
MPEG header including sync based on the MPEG header's content.
|
||||
"""
|
||||
|
||||
assert info.layer == 3
|
||||
|
||||
if info.version == 1:
|
||||
if info.mode != 3:
|
||||
return 36
|
||||
else:
|
||||
return 21
|
||||
else:
|
||||
if info.mode != 3:
|
||||
return 21
|
||||
else:
|
||||
return 13
|
||||
|
||||
|
||||
class VBRIHeaderError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class VBRIHeader(object):
|
||||
|
||||
version = 0
|
||||
"""VBRI header version"""
|
||||
|
||||
quality = 0
|
||||
"""Quality indicator"""
|
||||
|
||||
bytes = 0
|
||||
"""Number of bytes"""
|
||||
|
||||
frames = 0
|
||||
"""Number of frames"""
|
||||
|
||||
toc_scale_factor = 0
|
||||
"""Scale factor of TOC entries"""
|
||||
|
||||
toc_frames = 0
|
||||
"""Number of frames per table entry"""
|
||||
|
||||
toc = []
|
||||
"""TOC"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
"""Reads the VBRI header or raises VBRIHeaderError.
|
||||
|
||||
The file position is undefined after this returns
|
||||
"""
|
||||
|
||||
data = fileobj.read(26)
|
||||
if len(data) != 26 or not data.startswith(b"VBRI"):
|
||||
raise VBRIHeaderError("Not a VBRI header")
|
||||
|
||||
offset = 4
|
||||
self.version, offset = cdata.uint16_be_from(data, offset)
|
||||
if self.version != 1:
|
||||
raise VBRIHeaderError(
|
||||
"Unsupported header version: %r" % self.version)
|
||||
|
||||
offset += 2 # float16.. can't do
|
||||
self.quality, offset = cdata.uint16_be_from(data, offset)
|
||||
self.bytes, offset = cdata.uint32_be_from(data, offset)
|
||||
self.frames, offset = cdata.uint32_be_from(data, offset)
|
||||
|
||||
toc_num_entries, offset = cdata.uint16_be_from(data, offset)
|
||||
self.toc_scale_factor, offset = cdata.uint16_be_from(data, offset)
|
||||
toc_entry_size, offset = cdata.uint16_be_from(data, offset)
|
||||
self.toc_frames, offset = cdata.uint16_be_from(data, offset)
|
||||
toc_size = toc_entry_size * toc_num_entries
|
||||
toc_data = fileobj.read(toc_size)
|
||||
if len(toc_data) != toc_size:
|
||||
raise VBRIHeaderError("VBRI header truncated")
|
||||
|
||||
self.toc = []
|
||||
if toc_entry_size == 2:
|
||||
unpack = partial(cdata.uint16_be_from, toc_data)
|
||||
elif toc_entry_size == 4:
|
||||
unpack = partial(cdata.uint32_be_from, toc_data)
|
||||
else:
|
||||
raise VBRIHeaderError("Invalid TOC entry size")
|
||||
|
||||
self.toc = [unpack(i)[0] for i in xrange(0, toc_size, toc_entry_size)]
|
||||
|
||||
@classmethod
|
||||
def get_offset(cls, info):
|
||||
"""Offset in bytes from the start of the MPEG header including sync"""
|
||||
|
||||
assert info.layer == 3
|
||||
|
||||
return 36
|
||||
|
|
@ -1,101 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2005 Michael Urman
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
|
||||
class PaddingInfo(object):
|
||||
"""Abstract padding information object.
|
||||
|
||||
This will be passed to the callback function that can be used
|
||||
for saving tags.
|
||||
|
||||
::
|
||||
|
||||
def my_callback(info: PaddingInfo):
|
||||
return info.get_default_padding()
|
||||
|
||||
The callback should return the amount of padding to use (>= 0) based on
|
||||
the content size and the padding of the file after saving. The actual used
|
||||
amount of padding might vary depending on the file format (due to
|
||||
alignment etc.)
|
||||
|
||||
The default implementation can be accessed using the
|
||||
:meth:`get_default_padding` method in the callback.
|
||||
"""
|
||||
|
||||
padding = 0
|
||||
"""The amount of padding left after saving in bytes (can be negative if
|
||||
more data needs to be added as padding is available)
|
||||
"""
|
||||
|
||||
size = 0
|
||||
"""The amount of data following the padding"""
|
||||
|
||||
def __init__(self, padding, size):
|
||||
self.padding = padding
|
||||
self.size = size
|
||||
|
||||
def get_default_padding(self):
|
||||
"""The default implementation which tries to select a reasonable
|
||||
amount of padding and which might change in future versions.
|
||||
|
||||
:return: Amount of padding after saving
|
||||
:rtype: int
|
||||
"""
|
||||
|
||||
high = 1024 * 10 + self.size // 100 # 10 KiB + 1% of trailing data
|
||||
low = 1024 + self.size // 1000 # 1 KiB + 0.1% of trailing data
|
||||
|
||||
if self.padding >= 0:
|
||||
# enough padding left
|
||||
if self.padding > high:
|
||||
# padding too large, reduce
|
||||
return low
|
||||
# just use existing padding as is
|
||||
return self.padding
|
||||
else:
|
||||
# not enough padding, add some
|
||||
return low
|
||||
|
||||
def _get_padding(self, user_func):
|
||||
if user_func is None:
|
||||
return self.get_default_padding()
|
||||
else:
|
||||
return user_func(self)
|
||||
|
||||
def __repr__(self):
|
||||
return "<%s size=%d padding=%d>" % (
|
||||
type(self).__name__, self.size, self.padding)
|
||||
|
||||
|
||||
class Metadata(object):
|
||||
"""An abstract dict-like object.
|
||||
|
||||
Metadata is the base class for many of the tag objects in Mutagen.
|
||||
"""
|
||||
|
||||
__module__ = "mutagen"
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
if args or kwargs:
|
||||
self.load(*args, **kwargs)
|
||||
|
||||
def load(self, *args, **kwargs):
|
||||
raise NotImplementedError
|
||||
|
||||
def save(self, filename=None):
|
||||
"""Save changes to a file."""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
def delete(self, filename=None):
|
||||
"""Remove tags from a file.
|
||||
|
||||
In most cases this means any traces of the tag will be removed
|
||||
from the file.
|
||||
"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
|
@ -1,231 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2015 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import os
|
||||
import sys
|
||||
import signal
|
||||
import locale
|
||||
import contextlib
|
||||
import optparse
|
||||
import ctypes
|
||||
|
||||
from ._compat import text_type, PY2, PY3, iterbytes
|
||||
|
||||
|
||||
def split_escape(string, sep, maxsplit=None, escape_char="\\"):
|
||||
"""Like unicode/str/bytes.split but allows for the separator to be escaped
|
||||
|
||||
If passed unicode/str/bytes will only return list of unicode/str/bytes.
|
||||
"""
|
||||
|
||||
assert len(sep) == 1
|
||||
assert len(escape_char) == 1
|
||||
|
||||
if isinstance(string, bytes):
|
||||
if isinstance(escape_char, text_type):
|
||||
escape_char = escape_char.encode("ascii")
|
||||
iter_ = iterbytes
|
||||
else:
|
||||
iter_ = iter
|
||||
|
||||
if maxsplit is None:
|
||||
maxsplit = len(string)
|
||||
|
||||
empty = string[:0]
|
||||
result = []
|
||||
current = empty
|
||||
escaped = False
|
||||
for char in iter_(string):
|
||||
if escaped:
|
||||
if char != escape_char and char != sep:
|
||||
current += escape_char
|
||||
current += char
|
||||
escaped = False
|
||||
else:
|
||||
if char == escape_char:
|
||||
escaped = True
|
||||
elif char == sep and len(result) < maxsplit:
|
||||
result.append(current)
|
||||
current = empty
|
||||
else:
|
||||
current += char
|
||||
result.append(current)
|
||||
return result
|
||||
|
||||
|
||||
class SignalHandler(object):
|
||||
|
||||
def __init__(self):
|
||||
self._interrupted = False
|
||||
self._nosig = False
|
||||
self._init = False
|
||||
|
||||
def init(self):
|
||||
signal.signal(signal.SIGINT, self._handler)
|
||||
signal.signal(signal.SIGTERM, self._handler)
|
||||
if os.name != "nt":
|
||||
signal.signal(signal.SIGHUP, self._handler)
|
||||
|
||||
def _handler(self, signum, frame):
|
||||
self._interrupted = True
|
||||
if not self._nosig:
|
||||
raise SystemExit("Aborted...")
|
||||
|
||||
@contextlib.contextmanager
|
||||
def block(self):
|
||||
"""While this context manager is active any signals for aborting
|
||||
the process will be queued and exit the program once the context
|
||||
is left.
|
||||
"""
|
||||
|
||||
self._nosig = True
|
||||
yield
|
||||
self._nosig = False
|
||||
if self._interrupted:
|
||||
raise SystemExit("Aborted...")
|
||||
|
||||
|
||||
def get_win32_unicode_argv():
|
||||
"""Returns a unicode argv under Windows and standard sys.argv otherwise"""
|
||||
|
||||
if os.name != "nt" or not PY2:
|
||||
return sys.argv
|
||||
|
||||
import ctypes
|
||||
from ctypes import cdll, windll, wintypes
|
||||
|
||||
GetCommandLineW = cdll.kernel32.GetCommandLineW
|
||||
GetCommandLineW.argtypes = []
|
||||
GetCommandLineW.restype = wintypes.LPCWSTR
|
||||
|
||||
CommandLineToArgvW = windll.shell32.CommandLineToArgvW
|
||||
CommandLineToArgvW.argtypes = [
|
||||
wintypes.LPCWSTR, ctypes.POINTER(ctypes.c_int)]
|
||||
CommandLineToArgvW.restype = ctypes.POINTER(wintypes.LPWSTR)
|
||||
|
||||
LocalFree = windll.kernel32.LocalFree
|
||||
LocalFree.argtypes = [wintypes.HLOCAL]
|
||||
LocalFree.restype = wintypes.HLOCAL
|
||||
|
||||
argc = ctypes.c_int()
|
||||
argv = CommandLineToArgvW(GetCommandLineW(), ctypes.byref(argc))
|
||||
if not argv:
|
||||
return
|
||||
|
||||
res = argv[max(0, argc.value - len(sys.argv)):argc.value]
|
||||
|
||||
LocalFree(argv)
|
||||
|
||||
return res
|
||||
|
||||
|
||||
def fsencoding():
|
||||
"""The encoding used for paths, argv, environ, stdout and stdin"""
|
||||
|
||||
if os.name == "nt":
|
||||
return ""
|
||||
|
||||
return locale.getpreferredencoding() or "utf-8"
|
||||
|
||||
|
||||
def fsnative(text=u""):
|
||||
"""Returns the passed text converted to the preferred path type
|
||||
for each platform.
|
||||
"""
|
||||
|
||||
assert isinstance(text, text_type)
|
||||
|
||||
if os.name == "nt" or PY3:
|
||||
return text
|
||||
else:
|
||||
return text.encode(fsencoding(), "replace")
|
||||
return text
|
||||
|
||||
|
||||
def is_fsnative(arg):
|
||||
"""If the passed value is of the preferred path type for each platform.
|
||||
Note that on Python3+linux, paths can be bytes or str but this returns
|
||||
False for bytes there.
|
||||
"""
|
||||
|
||||
if PY3 or os.name == "nt":
|
||||
return isinstance(arg, text_type)
|
||||
else:
|
||||
return isinstance(arg, bytes)
|
||||
|
||||
|
||||
def print_(*objects, **kwargs):
|
||||
"""A print which supports bytes and str+surrogates under python3.
|
||||
|
||||
Needed so we can print anything passed to us through argv and environ.
|
||||
Under Windows only text_type is allowed.
|
||||
|
||||
Arguments:
|
||||
objects: one or more bytes/text
|
||||
linesep (bool): whether a line separator should be appended
|
||||
sep (bool): whether objects should be printed separated by spaces
|
||||
"""
|
||||
|
||||
linesep = kwargs.pop("linesep", True)
|
||||
sep = kwargs.pop("sep", True)
|
||||
file_ = kwargs.pop("file", None)
|
||||
if file_ is None:
|
||||
file_ = sys.stdout
|
||||
|
||||
old_cp = None
|
||||
if os.name == "nt":
|
||||
# Try to force the output to cp65001 aka utf-8.
|
||||
# If that fails use the current one (most likely cp850, so
|
||||
# most of unicode will be replaced with '?')
|
||||
encoding = "utf-8"
|
||||
old_cp = ctypes.windll.kernel32.GetConsoleOutputCP()
|
||||
if ctypes.windll.kernel32.SetConsoleOutputCP(65001) == 0:
|
||||
encoding = getattr(sys.stdout, "encoding", None) or "utf-8"
|
||||
old_cp = None
|
||||
else:
|
||||
encoding = fsencoding()
|
||||
|
||||
try:
|
||||
if linesep:
|
||||
objects = list(objects) + [os.linesep]
|
||||
|
||||
parts = []
|
||||
for text in objects:
|
||||
if isinstance(text, text_type):
|
||||
if PY3:
|
||||
try:
|
||||
text = text.encode(encoding, 'surrogateescape')
|
||||
except UnicodeEncodeError:
|
||||
text = text.encode(encoding, 'replace')
|
||||
else:
|
||||
text = text.encode(encoding, 'replace')
|
||||
parts.append(text)
|
||||
|
||||
data = (b" " if sep else b"").join(parts)
|
||||
try:
|
||||
fileno = file_.fileno()
|
||||
except (AttributeError, OSError, ValueError):
|
||||
# for tests when stdout is replaced
|
||||
try:
|
||||
file_.write(data)
|
||||
except TypeError:
|
||||
file_.write(data.decode(encoding, "replace"))
|
||||
else:
|
||||
file_.flush()
|
||||
os.write(fileno, data)
|
||||
finally:
|
||||
# reset the code page to what we had before
|
||||
if old_cp is not None:
|
||||
ctypes.windll.kernel32.SetConsoleOutputCP(old_cp)
|
||||
|
||||
|
||||
class OptionParser(optparse.OptionParser):
|
||||
"""OptionParser subclass which supports printing Unicode under Windows"""
|
||||
|
||||
def print_help(self, file=None):
|
||||
print_(self.format_help(), file=file)
|
||||
|
|
@ -1,550 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Utility classes for Mutagen.
|
||||
|
||||
You should not rely on the interfaces here being stable. They are
|
||||
intended for internal use in Mutagen only.
|
||||
"""
|
||||
|
||||
import struct
|
||||
import codecs
|
||||
|
||||
from fnmatch import fnmatchcase
|
||||
|
||||
from ._compat import chr_, PY2, iteritems, iterbytes, integer_types, xrange, \
|
||||
izip
|
||||
|
||||
|
||||
class MutagenError(Exception):
|
||||
"""Base class for all custom exceptions in mutagen
|
||||
|
||||
.. versionadded:: 1.25
|
||||
"""
|
||||
|
||||
__module__ = "mutagen"
|
||||
|
||||
|
||||
def total_ordering(cls):
|
||||
assert "__eq__" in cls.__dict__
|
||||
assert "__lt__" in cls.__dict__
|
||||
|
||||
cls.__le__ = lambda self, other: self == other or self < other
|
||||
cls.__gt__ = lambda self, other: not (self == other or self < other)
|
||||
cls.__ge__ = lambda self, other: not self < other
|
||||
cls.__ne__ = lambda self, other: not self.__eq__(other)
|
||||
|
||||
return cls
|
||||
|
||||
|
||||
def hashable(cls):
|
||||
"""Makes sure the class is hashable.
|
||||
|
||||
Needs a working __eq__ and __hash__ and will add a __ne__.
|
||||
"""
|
||||
|
||||
# py2
|
||||
assert "__hash__" in cls.__dict__
|
||||
# py3
|
||||
assert cls.__dict__["__hash__"] is not None
|
||||
assert "__eq__" in cls.__dict__
|
||||
|
||||
cls.__ne__ = lambda self, other: not self.__eq__(other)
|
||||
|
||||
return cls
|
||||
|
||||
|
||||
def enum(cls):
|
||||
assert cls.__bases__ == (object,)
|
||||
|
||||
d = dict(cls.__dict__)
|
||||
new_type = type(cls.__name__, (int,), d)
|
||||
new_type.__module__ = cls.__module__
|
||||
|
||||
map_ = {}
|
||||
for key, value in iteritems(d):
|
||||
if key.upper() == key and isinstance(value, integer_types):
|
||||
value_instance = new_type(value)
|
||||
setattr(new_type, key, value_instance)
|
||||
map_[value] = key
|
||||
|
||||
def str_(self):
|
||||
if self in map_:
|
||||
return "%s.%s" % (type(self).__name__, map_[self])
|
||||
return "%d" % int(self)
|
||||
|
||||
def repr_(self):
|
||||
if self in map_:
|
||||
return "<%s.%s: %d>" % (type(self).__name__, map_[self], int(self))
|
||||
return "%d" % int(self)
|
||||
|
||||
setattr(new_type, "__repr__", repr_)
|
||||
setattr(new_type, "__str__", str_)
|
||||
|
||||
return new_type
|
||||
|
||||
|
||||
@total_ordering
|
||||
class DictMixin(object):
|
||||
"""Implement the dict API using keys() and __*item__ methods.
|
||||
|
||||
Similar to UserDict.DictMixin, this takes a class that defines
|
||||
__getitem__, __setitem__, __delitem__, and keys(), and turns it
|
||||
into a full dict-like object.
|
||||
|
||||
UserDict.DictMixin is not suitable for this purpose because it's
|
||||
an old-style class.
|
||||
|
||||
This class is not optimized for very large dictionaries; many
|
||||
functions have linear memory requirements. I recommend you
|
||||
override some of these functions if speed is required.
|
||||
"""
|
||||
|
||||
def __iter__(self):
|
||||
return iter(self.keys())
|
||||
|
||||
def __has_key(self, key):
|
||||
try:
|
||||
self[key]
|
||||
except KeyError:
|
||||
return False
|
||||
else:
|
||||
return True
|
||||
|
||||
if PY2:
|
||||
has_key = __has_key
|
||||
|
||||
__contains__ = __has_key
|
||||
|
||||
if PY2:
|
||||
iterkeys = lambda self: iter(self.keys())
|
||||
|
||||
def values(self):
|
||||
return [self[k] for k in self.keys()]
|
||||
|
||||
if PY2:
|
||||
itervalues = lambda self: iter(self.values())
|
||||
|
||||
def items(self):
|
||||
return list(izip(self.keys(), self.values()))
|
||||
|
||||
if PY2:
|
||||
iteritems = lambda s: iter(s.items())
|
||||
|
||||
def clear(self):
|
||||
for key in list(self.keys()):
|
||||
self.__delitem__(key)
|
||||
|
||||
def pop(self, key, *args):
|
||||
if len(args) > 1:
|
||||
raise TypeError("pop takes at most two arguments")
|
||||
try:
|
||||
value = self[key]
|
||||
except KeyError:
|
||||
if args:
|
||||
return args[0]
|
||||
else:
|
||||
raise
|
||||
del(self[key])
|
||||
return value
|
||||
|
||||
def popitem(self):
|
||||
for key in self.keys():
|
||||
break
|
||||
else:
|
||||
raise KeyError("dictionary is empty")
|
||||
return key, self.pop(key)
|
||||
|
||||
def update(self, other=None, **kwargs):
|
||||
if other is None:
|
||||
self.update(kwargs)
|
||||
other = {}
|
||||
|
||||
try:
|
||||
for key, value in other.items():
|
||||
self.__setitem__(key, value)
|
||||
except AttributeError:
|
||||
for key, value in other:
|
||||
self[key] = value
|
||||
|
||||
def setdefault(self, key, default=None):
|
||||
try:
|
||||
return self[key]
|
||||
except KeyError:
|
||||
self[key] = default
|
||||
return default
|
||||
|
||||
def get(self, key, default=None):
|
||||
try:
|
||||
return self[key]
|
||||
except KeyError:
|
||||
return default
|
||||
|
||||
def __repr__(self):
|
||||
return repr(dict(self.items()))
|
||||
|
||||
def __eq__(self, other):
|
||||
return dict(self.items()) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return dict(self.items()) < other
|
||||
|
||||
__hash__ = object.__hash__
|
||||
|
||||
def __len__(self):
|
||||
return len(self.keys())
|
||||
|
||||
|
||||
class DictProxy(DictMixin):
|
||||
def __init__(self, *args, **kwargs):
|
||||
self.__dict = {}
|
||||
super(DictProxy, self).__init__(*args, **kwargs)
|
||||
|
||||
def __getitem__(self, key):
|
||||
return self.__dict[key]
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
self.__dict[key] = value
|
||||
|
||||
def __delitem__(self, key):
|
||||
del(self.__dict[key])
|
||||
|
||||
def keys(self):
|
||||
return self.__dict.keys()
|
||||
|
||||
|
||||
def _fill_cdata(cls):
|
||||
"""Add struct pack/unpack functions"""
|
||||
|
||||
funcs = {}
|
||||
for key, name in [("b", "char"), ("h", "short"),
|
||||
("i", "int"), ("q", "longlong")]:
|
||||
for echar, esuffix in [("<", "le"), (">", "be")]:
|
||||
esuffix = "_" + esuffix
|
||||
for unsigned in [True, False]:
|
||||
s = struct.Struct(echar + (key.upper() if unsigned else key))
|
||||
get_wrapper = lambda f: lambda *a, **k: f(*a, **k)[0]
|
||||
unpack = get_wrapper(s.unpack)
|
||||
unpack_from = get_wrapper(s.unpack_from)
|
||||
|
||||
def get_unpack_from(s):
|
||||
def unpack_from(data, offset=0):
|
||||
return s.unpack_from(data, offset)[0], offset + s.size
|
||||
return unpack_from
|
||||
|
||||
unpack_from = get_unpack_from(s)
|
||||
pack = s.pack
|
||||
|
||||
prefix = "u" if unsigned else ""
|
||||
if s.size == 1:
|
||||
esuffix = ""
|
||||
bits = str(s.size * 8)
|
||||
funcs["%s%s%s" % (prefix, name, esuffix)] = unpack
|
||||
funcs["%sint%s%s" % (prefix, bits, esuffix)] = unpack
|
||||
funcs["%s%s%s_from" % (prefix, name, esuffix)] = unpack_from
|
||||
funcs["%sint%s%s_from" % (prefix, bits, esuffix)] = unpack_from
|
||||
funcs["to_%s%s%s" % (prefix, name, esuffix)] = pack
|
||||
funcs["to_%sint%s%s" % (prefix, bits, esuffix)] = pack
|
||||
|
||||
for key, func in iteritems(funcs):
|
||||
setattr(cls, key, staticmethod(func))
|
||||
|
||||
|
||||
class cdata(object):
|
||||
"""C character buffer to Python numeric type conversions.
|
||||
|
||||
For each size/sign/endianness:
|
||||
uint32_le(data)/to_uint32_le(num)/uint32_le_from(data, offset=0)
|
||||
"""
|
||||
|
||||
from struct import error
|
||||
error = error
|
||||
|
||||
bitswap = b''.join(
|
||||
chr_(sum(((val >> i) & 1) << (7 - i) for i in xrange(8)))
|
||||
for val in xrange(256))
|
||||
|
||||
test_bit = staticmethod(lambda value, n: bool((value >> n) & 1))
|
||||
|
||||
|
||||
_fill_cdata(cdata)
|
||||
|
||||
|
||||
def get_size(fileobj):
|
||||
"""Returns the size of the file object. The position when passed in will
|
||||
be preserved if no error occurs.
|
||||
|
||||
In case of an error raises IOError.
|
||||
"""
|
||||
|
||||
old_pos = fileobj.tell()
|
||||
try:
|
||||
fileobj.seek(0, 2)
|
||||
return fileobj.tell()
|
||||
finally:
|
||||
fileobj.seek(old_pos, 0)
|
||||
|
||||
|
||||
def insert_bytes(fobj, size, offset, BUFFER_SIZE=2 ** 16):
|
||||
"""Insert size bytes of empty space starting at offset.
|
||||
|
||||
fobj must be an open file object, open rb+ or
|
||||
equivalent. Mutagen tries to use mmap to resize the file, but
|
||||
falls back to a significantly slower method if mmap fails.
|
||||
"""
|
||||
|
||||
assert 0 < size
|
||||
assert 0 <= offset
|
||||
|
||||
fobj.seek(0, 2)
|
||||
filesize = fobj.tell()
|
||||
movesize = filesize - offset
|
||||
fobj.write(b'\x00' * size)
|
||||
fobj.flush()
|
||||
|
||||
try:
|
||||
import mmap
|
||||
file_map = mmap.mmap(fobj.fileno(), filesize + size)
|
||||
try:
|
||||
file_map.move(offset + size, offset, movesize)
|
||||
finally:
|
||||
file_map.close()
|
||||
except (ValueError, EnvironmentError, ImportError, AttributeError):
|
||||
# handle broken mmap scenarios, BytesIO()
|
||||
fobj.truncate(filesize)
|
||||
|
||||
fobj.seek(0, 2)
|
||||
padsize = size
|
||||
# Don't generate an enormous string if we need to pad
|
||||
# the file out several megs.
|
||||
while padsize:
|
||||
addsize = min(BUFFER_SIZE, padsize)
|
||||
fobj.write(b"\x00" * addsize)
|
||||
padsize -= addsize
|
||||
|
||||
fobj.seek(filesize, 0)
|
||||
while movesize:
|
||||
# At the start of this loop, fobj is pointing at the end
|
||||
# of the data we need to move, which is of movesize length.
|
||||
thismove = min(BUFFER_SIZE, movesize)
|
||||
# Seek back however much we're going to read this frame.
|
||||
fobj.seek(-thismove, 1)
|
||||
nextpos = fobj.tell()
|
||||
# Read it, so we're back at the end.
|
||||
data = fobj.read(thismove)
|
||||
# Seek back to where we need to write it.
|
||||
fobj.seek(-thismove + size, 1)
|
||||
# Write it.
|
||||
fobj.write(data)
|
||||
# And seek back to the end of the unmoved data.
|
||||
fobj.seek(nextpos)
|
||||
movesize -= thismove
|
||||
|
||||
fobj.flush()
|
||||
|
||||
|
||||
def delete_bytes(fobj, size, offset, BUFFER_SIZE=2 ** 16):
|
||||
"""Delete size bytes of empty space starting at offset.
|
||||
|
||||
fobj must be an open file object, open rb+ or
|
||||
equivalent. Mutagen tries to use mmap to resize the file, but
|
||||
falls back to a significantly slower method if mmap fails.
|
||||
"""
|
||||
|
||||
assert 0 < size
|
||||
assert 0 <= offset
|
||||
|
||||
fobj.seek(0, 2)
|
||||
filesize = fobj.tell()
|
||||
movesize = filesize - offset - size
|
||||
assert 0 <= movesize
|
||||
|
||||
if movesize > 0:
|
||||
fobj.flush()
|
||||
try:
|
||||
import mmap
|
||||
file_map = mmap.mmap(fobj.fileno(), filesize)
|
||||
try:
|
||||
file_map.move(offset, offset + size, movesize)
|
||||
finally:
|
||||
file_map.close()
|
||||
except (ValueError, EnvironmentError, ImportError, AttributeError):
|
||||
# handle broken mmap scenarios, BytesIO()
|
||||
fobj.seek(offset + size)
|
||||
buf = fobj.read(BUFFER_SIZE)
|
||||
while buf:
|
||||
fobj.seek(offset)
|
||||
fobj.write(buf)
|
||||
offset += len(buf)
|
||||
fobj.seek(offset + size)
|
||||
buf = fobj.read(BUFFER_SIZE)
|
||||
fobj.truncate(filesize - size)
|
||||
fobj.flush()
|
||||
|
||||
|
||||
def resize_bytes(fobj, old_size, new_size, offset):
|
||||
"""Resize an area in a file adding and deleting at the end of it.
|
||||
Does nothing if no resizing is needed.
|
||||
"""
|
||||
|
||||
if new_size < old_size:
|
||||
delete_size = old_size - new_size
|
||||
delete_at = offset + new_size
|
||||
delete_bytes(fobj, delete_size, delete_at)
|
||||
elif new_size > old_size:
|
||||
insert_size = new_size - old_size
|
||||
insert_at = offset + old_size
|
||||
insert_bytes(fobj, insert_size, insert_at)
|
||||
|
||||
|
||||
def dict_match(d, key, default=None):
|
||||
"""Like __getitem__ but works as if the keys() are all filename patterns.
|
||||
Returns the value of any dict key that matches the passed key.
|
||||
"""
|
||||
|
||||
if key in d and "[" not in key:
|
||||
return d[key]
|
||||
else:
|
||||
for pattern, value in iteritems(d):
|
||||
if fnmatchcase(key, pattern):
|
||||
return value
|
||||
return default
|
||||
|
||||
|
||||
def decode_terminated(data, encoding, strict=True):
|
||||
"""Returns the decoded data until the first NULL terminator
|
||||
and all data after it.
|
||||
|
||||
In case the data can't be decoded raises UnicodeError.
|
||||
In case the encoding is not found raises LookupError.
|
||||
In case the data isn't null terminated (even if it is encoded correctly)
|
||||
raises ValueError except if strict is False, then the decoded string
|
||||
will be returned anyway.
|
||||
"""
|
||||
|
||||
codec_info = codecs.lookup(encoding)
|
||||
|
||||
# normalize encoding name so we can compare by name
|
||||
encoding = codec_info.name
|
||||
|
||||
# fast path
|
||||
if encoding in ("utf-8", "iso8859-1"):
|
||||
index = data.find(b"\x00")
|
||||
if index == -1:
|
||||
# make sure we raise UnicodeError first, like in the slow path
|
||||
res = data.decode(encoding), b""
|
||||
if strict:
|
||||
raise ValueError("not null terminated")
|
||||
else:
|
||||
return res
|
||||
return data[:index].decode(encoding), data[index + 1:]
|
||||
|
||||
# slow path
|
||||
decoder = codec_info.incrementaldecoder()
|
||||
r = []
|
||||
for i, b in enumerate(iterbytes(data)):
|
||||
c = decoder.decode(b)
|
||||
if c == u"\x00":
|
||||
return u"".join(r), data[i + 1:]
|
||||
r.append(c)
|
||||
else:
|
||||
# make sure the decoder is finished
|
||||
r.append(decoder.decode(b"", True))
|
||||
if strict:
|
||||
raise ValueError("not null terminated")
|
||||
return u"".join(r), b""
|
||||
|
||||
|
||||
class BitReaderError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class BitReader(object):
|
||||
|
||||
def __init__(self, fileobj):
|
||||
self._fileobj = fileobj
|
||||
self._buffer = 0
|
||||
self._bits = 0
|
||||
self._pos = fileobj.tell()
|
||||
|
||||
def bits(self, count):
|
||||
"""Reads `count` bits and returns an uint, MSB read first.
|
||||
|
||||
May raise BitReaderError if not enough data could be read or
|
||||
IOError by the underlying file object.
|
||||
"""
|
||||
|
||||
if count < 0:
|
||||
raise ValueError
|
||||
|
||||
if count > self._bits:
|
||||
n_bytes = (count - self._bits + 7) // 8
|
||||
data = self._fileobj.read(n_bytes)
|
||||
if len(data) != n_bytes:
|
||||
raise BitReaderError("not enough data")
|
||||
for b in bytearray(data):
|
||||
self._buffer = (self._buffer << 8) | b
|
||||
self._bits += n_bytes * 8
|
||||
|
||||
self._bits -= count
|
||||
value = self._buffer >> self._bits
|
||||
self._buffer &= (1 << self._bits) - 1
|
||||
assert self._bits < 8
|
||||
return value
|
||||
|
||||
def bytes(self, count):
|
||||
"""Returns a bytearray of length `count`. Works unaligned."""
|
||||
|
||||
if count < 0:
|
||||
raise ValueError
|
||||
|
||||
# fast path
|
||||
if self._bits == 0:
|
||||
data = self._fileobj.read(count)
|
||||
if len(data) != count:
|
||||
raise BitReaderError("not enough data")
|
||||
return data
|
||||
|
||||
return bytes(bytearray(self.bits(8) for _ in xrange(count)))
|
||||
|
||||
def skip(self, count):
|
||||
"""Skip `count` bits.
|
||||
|
||||
Might raise BitReaderError if there wasn't enough data to skip,
|
||||
but might also fail on the next bits() instead.
|
||||
"""
|
||||
|
||||
if count < 0:
|
||||
raise ValueError
|
||||
|
||||
if count <= self._bits:
|
||||
self.bits(count)
|
||||
else:
|
||||
count -= self.align()
|
||||
n_bytes = count // 8
|
||||
self._fileobj.seek(n_bytes, 1)
|
||||
count -= n_bytes * 8
|
||||
self.bits(count)
|
||||
|
||||
def get_position(self):
|
||||
"""Returns the amount of bits read or skipped so far"""
|
||||
|
||||
return (self._fileobj.tell() - self._pos) * 8 - self._bits
|
||||
|
||||
def align(self):
|
||||
"""Align to the next byte, returns the amount of bits skipped"""
|
||||
|
||||
bits = self._bits
|
||||
self._buffer = 0
|
||||
self._bits = 0
|
||||
return bits
|
||||
|
||||
def is_aligned(self):
|
||||
"""If we are currently aligned to bytes and nothing is buffered"""
|
||||
|
||||
return self._bits == 0
|
||||
|
|
@ -1,330 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2005-2006 Joe Wreschnig
|
||||
# 2013 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Vorbis comment data.
|
||||
|
||||
Vorbis comments are freeform key/value pairs; keys are
|
||||
case-insensitive ASCII and values are Unicode strings. A key may have
|
||||
multiple values.
|
||||
|
||||
The specification is at http://www.xiph.org/vorbis/doc/v-comment.html.
|
||||
"""
|
||||
|
||||
import sys
|
||||
|
||||
import mutagen
|
||||
from ._compat import reraise, BytesIO, text_type, xrange, PY3, PY2
|
||||
from mutagen._util import DictMixin, cdata
|
||||
|
||||
|
||||
def is_valid_key(key):
|
||||
"""Return true if a string is a valid Vorbis comment key.
|
||||
|
||||
Valid Vorbis comment keys are printable ASCII between 0x20 (space)
|
||||
and 0x7D ('}'), excluding '='.
|
||||
|
||||
Takes str/unicode in Python 2, unicode in Python 3
|
||||
"""
|
||||
|
||||
if PY3 and isinstance(key, bytes):
|
||||
raise TypeError("needs to be str not bytes")
|
||||
|
||||
for c in key:
|
||||
if c < " " or c > "}" or c == "=":
|
||||
return False
|
||||
else:
|
||||
return bool(key)
|
||||
|
||||
|
||||
istag = is_valid_key
|
||||
|
||||
|
||||
class error(IOError):
|
||||
pass
|
||||
|
||||
|
||||
class VorbisUnsetFrameError(error):
|
||||
pass
|
||||
|
||||
|
||||
class VorbisEncodingError(error):
|
||||
pass
|
||||
|
||||
|
||||
class VComment(mutagen.Metadata, list):
|
||||
"""A Vorbis comment parser, accessor, and renderer.
|
||||
|
||||
All comment ordering is preserved. A VComment is a list of
|
||||
key/value pairs, and so any Python list method can be used on it.
|
||||
|
||||
Vorbis comments are always wrapped in something like an Ogg Vorbis
|
||||
bitstream or a FLAC metadata block, so this loads string data or a
|
||||
file-like object, not a filename.
|
||||
|
||||
Attributes:
|
||||
|
||||
* vendor -- the stream 'vendor' (i.e. writer); default 'Mutagen'
|
||||
"""
|
||||
|
||||
vendor = u"Mutagen " + mutagen.version_string
|
||||
|
||||
def __init__(self, data=None, *args, **kwargs):
|
||||
self._size = 0
|
||||
# Collect the args to pass to load, this lets child classes
|
||||
# override just load and get equivalent magic for the
|
||||
# constructor.
|
||||
if data is not None:
|
||||
if isinstance(data, bytes):
|
||||
data = BytesIO(data)
|
||||
elif not hasattr(data, 'read'):
|
||||
raise TypeError("VComment requires bytes or a file-like")
|
||||
start = data.tell()
|
||||
self.load(data, *args, **kwargs)
|
||||
self._size = data.tell() - start
|
||||
|
||||
def load(self, fileobj, errors='replace', framing=True):
|
||||
"""Parse a Vorbis comment from a file-like object.
|
||||
|
||||
Keyword arguments:
|
||||
|
||||
* errors:
|
||||
'strict', 'replace', or 'ignore'. This affects Unicode decoding
|
||||
and how other malformed content is interpreted.
|
||||
* framing -- if true, fail if a framing bit is not present
|
||||
|
||||
Framing bits are required by the Vorbis comment specification,
|
||||
but are not used in FLAC Vorbis comment blocks.
|
||||
"""
|
||||
|
||||
try:
|
||||
vendor_length = cdata.uint_le(fileobj.read(4))
|
||||
self.vendor = fileobj.read(vendor_length).decode('utf-8', errors)
|
||||
count = cdata.uint_le(fileobj.read(4))
|
||||
for i in xrange(count):
|
||||
length = cdata.uint_le(fileobj.read(4))
|
||||
try:
|
||||
string = fileobj.read(length).decode('utf-8', errors)
|
||||
except (OverflowError, MemoryError):
|
||||
raise error("cannot read %d bytes, too large" % length)
|
||||
try:
|
||||
tag, value = string.split('=', 1)
|
||||
except ValueError as err:
|
||||
if errors == "ignore":
|
||||
continue
|
||||
elif errors == "replace":
|
||||
tag, value = u"unknown%d" % i, string
|
||||
else:
|
||||
reraise(VorbisEncodingError, err, sys.exc_info()[2])
|
||||
try:
|
||||
tag = tag.encode('ascii', errors)
|
||||
except UnicodeEncodeError:
|
||||
raise VorbisEncodingError("invalid tag name %r" % tag)
|
||||
else:
|
||||
# string keys in py3k
|
||||
if PY3:
|
||||
tag = tag.decode("ascii")
|
||||
if is_valid_key(tag):
|
||||
self.append((tag, value))
|
||||
|
||||
if framing and not bytearray(fileobj.read(1))[0] & 0x01:
|
||||
raise VorbisUnsetFrameError("framing bit was unset")
|
||||
except (cdata.error, TypeError):
|
||||
raise error("file is not a valid Vorbis comment")
|
||||
|
||||
def validate(self):
|
||||
"""Validate keys and values.
|
||||
|
||||
Check to make sure every key used is a valid Vorbis key, and
|
||||
that every value used is a valid Unicode or UTF-8 string. If
|
||||
any invalid keys or values are found, a ValueError is raised.
|
||||
|
||||
In Python 3 all keys and values have to be a string.
|
||||
"""
|
||||
|
||||
if not isinstance(self.vendor, text_type):
|
||||
if PY3:
|
||||
raise ValueError("vendor needs to be str")
|
||||
|
||||
try:
|
||||
self.vendor.decode('utf-8')
|
||||
except UnicodeDecodeError:
|
||||
raise ValueError
|
||||
|
||||
for key, value in self:
|
||||
try:
|
||||
if not is_valid_key(key):
|
||||
raise ValueError
|
||||
except TypeError:
|
||||
raise ValueError("%r is not a valid key" % key)
|
||||
|
||||
if not isinstance(value, text_type):
|
||||
if PY3:
|
||||
raise ValueError("%r needs to be str" % key)
|
||||
|
||||
try:
|
||||
value.decode("utf-8")
|
||||
except:
|
||||
raise ValueError("%r is not a valid value" % value)
|
||||
|
||||
return True
|
||||
|
||||
def clear(self):
|
||||
"""Clear all keys from the comment."""
|
||||
|
||||
for i in list(self):
|
||||
self.remove(i)
|
||||
|
||||
def write(self, framing=True):
|
||||
"""Return a string representation of the data.
|
||||
|
||||
Validation is always performed, so calling this function on
|
||||
invalid data may raise a ValueError.
|
||||
|
||||
Keyword arguments:
|
||||
|
||||
* framing -- if true, append a framing bit (see load)
|
||||
"""
|
||||
|
||||
self.validate()
|
||||
|
||||
def _encode(value):
|
||||
if not isinstance(value, bytes):
|
||||
return value.encode('utf-8')
|
||||
return value
|
||||
|
||||
f = BytesIO()
|
||||
vendor = _encode(self.vendor)
|
||||
f.write(cdata.to_uint_le(len(vendor)))
|
||||
f.write(vendor)
|
||||
f.write(cdata.to_uint_le(len(self)))
|
||||
for tag, value in self:
|
||||
tag = _encode(tag)
|
||||
value = _encode(value)
|
||||
comment = tag + b"=" + value
|
||||
f.write(cdata.to_uint_le(len(comment)))
|
||||
f.write(comment)
|
||||
if framing:
|
||||
f.write(b"\x01")
|
||||
return f.getvalue()
|
||||
|
||||
def pprint(self):
|
||||
|
||||
def _decode(value):
|
||||
if not isinstance(value, text_type):
|
||||
return value.decode('utf-8', 'replace')
|
||||
return value
|
||||
|
||||
tags = [u"%s=%s" % (_decode(k), _decode(v)) for k, v in self]
|
||||
return u"\n".join(tags)
|
||||
|
||||
|
||||
class VCommentDict(VComment, DictMixin):
|
||||
"""A VComment that looks like a dictionary.
|
||||
|
||||
This object differs from a dictionary in two ways. First,
|
||||
len(comment) will still return the number of values, not the
|
||||
number of keys. Secondly, iterating through the object will
|
||||
iterate over (key, value) pairs, not keys. Since a key may have
|
||||
multiple values, the same value may appear multiple times while
|
||||
iterating.
|
||||
|
||||
Since Vorbis comment keys are case-insensitive, all keys are
|
||||
normalized to lowercase ASCII.
|
||||
"""
|
||||
|
||||
def __getitem__(self, key):
|
||||
"""A list of values for the key.
|
||||
|
||||
This is a copy, so comment['title'].append('a title') will not
|
||||
work.
|
||||
"""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return VComment.__getitem__(self, key)
|
||||
|
||||
if not is_valid_key(key):
|
||||
raise ValueError
|
||||
|
||||
key = key.lower()
|
||||
|
||||
values = [value for (k, value) in self if k.lower() == key]
|
||||
if not values:
|
||||
raise KeyError(key)
|
||||
else:
|
||||
return values
|
||||
|
||||
def __delitem__(self, key):
|
||||
"""Delete all values associated with the key."""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return VComment.__delitem__(self, key)
|
||||
|
||||
if not is_valid_key(key):
|
||||
raise ValueError
|
||||
|
||||
key = key.lower()
|
||||
to_delete = [x for x in self if x[0].lower() == key]
|
||||
if not to_delete:
|
||||
raise KeyError(key)
|
||||
else:
|
||||
for item in to_delete:
|
||||
self.remove(item)
|
||||
|
||||
def __contains__(self, key):
|
||||
"""Return true if the key has any values."""
|
||||
|
||||
if not is_valid_key(key):
|
||||
raise ValueError
|
||||
|
||||
key = key.lower()
|
||||
for k, value in self:
|
||||
if k.lower() == key:
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def __setitem__(self, key, values):
|
||||
"""Set a key's value or values.
|
||||
|
||||
Setting a value overwrites all old ones. The value may be a
|
||||
list of Unicode or UTF-8 strings, or a single Unicode or UTF-8
|
||||
string.
|
||||
"""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return VComment.__setitem__(self, key, values)
|
||||
|
||||
if not is_valid_key(key):
|
||||
raise ValueError
|
||||
|
||||
if not isinstance(values, list):
|
||||
values = [values]
|
||||
try:
|
||||
del(self[key])
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
if PY2:
|
||||
key = key.encode('ascii')
|
||||
|
||||
for value in values:
|
||||
self.append((key, value))
|
||||
|
||||
def keys(self):
|
||||
"""Return all keys in the comment."""
|
||||
|
||||
return list(set([k.lower() for k, v in self]))
|
||||
|
||||
def as_dict(self):
|
||||
"""Return a copy of the comment data in a real dict."""
|
||||
|
||||
return dict([(key, self[key]) for key in self.keys()])
|
||||
|
|
@ -1,410 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2014 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""
|
||||
* ADTS - Audio Data Transport Stream
|
||||
* ADIF - Audio Data Interchange Format
|
||||
* See ISO/IEC 13818-7 / 14496-03
|
||||
"""
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._file import FileType
|
||||
from mutagen._util import BitReader, BitReaderError, MutagenError
|
||||
from mutagen._compat import endswith, xrange
|
||||
|
||||
|
||||
_FREQS = [
|
||||
96000, 88200, 64000, 48000,
|
||||
44100, 32000, 24000, 22050,
|
||||
16000, 12000, 11025, 8000,
|
||||
7350,
|
||||
]
|
||||
|
||||
|
||||
class _ADTSStream(object):
|
||||
"""Represents a series of frames belonging to the same stream"""
|
||||
|
||||
parsed_frames = 0
|
||||
"""Number of successfully parsed frames"""
|
||||
|
||||
offset = 0
|
||||
"""offset in bytes at which the stream starts (the first sync word)"""
|
||||
|
||||
@classmethod
|
||||
def find_stream(cls, fileobj, max_bytes):
|
||||
"""Returns a possibly valid _ADTSStream or None.
|
||||
|
||||
Args:
|
||||
max_bytes (int): maximum bytes to read
|
||||
"""
|
||||
|
||||
r = BitReader(fileobj)
|
||||
stream = cls(r)
|
||||
if stream.sync(max_bytes):
|
||||
stream.offset = (r.get_position() - 12) // 8
|
||||
return stream
|
||||
|
||||
def sync(self, max_bytes):
|
||||
"""Find the next sync.
|
||||
Returns True if found."""
|
||||
|
||||
# at least 2 bytes for the sync
|
||||
max_bytes = max(max_bytes, 2)
|
||||
|
||||
r = self._r
|
||||
r.align()
|
||||
while max_bytes > 0:
|
||||
try:
|
||||
b = r.bytes(1)
|
||||
if b == b"\xff":
|
||||
if r.bits(4) == 0xf:
|
||||
return True
|
||||
r.align()
|
||||
max_bytes -= 2
|
||||
else:
|
||||
max_bytes -= 1
|
||||
except BitReaderError:
|
||||
return False
|
||||
return False
|
||||
|
||||
def __init__(self, r):
|
||||
"""Use _ADTSStream.find_stream to create a stream"""
|
||||
|
||||
self._fixed_header_key = None
|
||||
self._r = r
|
||||
self.offset = -1
|
||||
self.parsed_frames = 0
|
||||
|
||||
self._samples = 0
|
||||
self._payload = 0
|
||||
self._start = r.get_position() / 8
|
||||
self._last = self._start
|
||||
|
||||
@property
|
||||
def bitrate(self):
|
||||
"""Bitrate of the raw aac blocks, excluding framing/crc"""
|
||||
|
||||
assert self.parsed_frames, "no frame parsed yet"
|
||||
|
||||
if self._samples == 0:
|
||||
return 0
|
||||
|
||||
return (8 * self._payload * self.frequency) // self._samples
|
||||
|
||||
@property
|
||||
def samples(self):
|
||||
"""samples so far"""
|
||||
|
||||
assert self.parsed_frames, "no frame parsed yet"
|
||||
|
||||
return self._samples
|
||||
|
||||
@property
|
||||
def size(self):
|
||||
"""bytes read in the stream so far (including framing)"""
|
||||
|
||||
assert self.parsed_frames, "no frame parsed yet"
|
||||
|
||||
return self._last - self._start
|
||||
|
||||
@property
|
||||
def channels(self):
|
||||
"""0 means unknown"""
|
||||
|
||||
assert self.parsed_frames, "no frame parsed yet"
|
||||
|
||||
b_index = self._fixed_header_key[6]
|
||||
if b_index == 7:
|
||||
return 8
|
||||
elif b_index > 7:
|
||||
return 0
|
||||
else:
|
||||
return b_index
|
||||
|
||||
@property
|
||||
def frequency(self):
|
||||
"""0 means unknown"""
|
||||
|
||||
assert self.parsed_frames, "no frame parsed yet"
|
||||
|
||||
f_index = self._fixed_header_key[4]
|
||||
try:
|
||||
return _FREQS[f_index]
|
||||
except IndexError:
|
||||
return 0
|
||||
|
||||
def parse_frame(self):
|
||||
"""True if parsing was successful.
|
||||
Fails either because the frame wasn't valid or the stream ended.
|
||||
"""
|
||||
|
||||
try:
|
||||
return self._parse_frame()
|
||||
except BitReaderError:
|
||||
return False
|
||||
|
||||
def _parse_frame(self):
|
||||
r = self._r
|
||||
# start == position of sync word
|
||||
start = r.get_position() - 12
|
||||
|
||||
# adts_fixed_header
|
||||
id_ = r.bits(1)
|
||||
layer = r.bits(2)
|
||||
protection_absent = r.bits(1)
|
||||
|
||||
profile = r.bits(2)
|
||||
sampling_frequency_index = r.bits(4)
|
||||
private_bit = r.bits(1)
|
||||
# TODO: if 0 we could parse program_config_element()
|
||||
channel_configuration = r.bits(3)
|
||||
original_copy = r.bits(1)
|
||||
home = r.bits(1)
|
||||
|
||||
# the fixed header has to be the same for every frame in the stream
|
||||
fixed_header_key = (
|
||||
id_, layer, protection_absent, profile, sampling_frequency_index,
|
||||
private_bit, channel_configuration, original_copy, home,
|
||||
)
|
||||
|
||||
if self._fixed_header_key is None:
|
||||
self._fixed_header_key = fixed_header_key
|
||||
else:
|
||||
if self._fixed_header_key != fixed_header_key:
|
||||
return False
|
||||
|
||||
# adts_variable_header
|
||||
r.skip(2) # copyright_identification_bit/start
|
||||
frame_length = r.bits(13)
|
||||
r.skip(11) # adts_buffer_fullness
|
||||
nordbif = r.bits(2)
|
||||
# adts_variable_header end
|
||||
|
||||
crc_overhead = 0
|
||||
if not protection_absent:
|
||||
crc_overhead += (nordbif + 1) * 16
|
||||
if nordbif != 0:
|
||||
crc_overhead *= 2
|
||||
|
||||
left = (frame_length * 8) - (r.get_position() - start)
|
||||
if left < 0:
|
||||
return False
|
||||
r.skip(left)
|
||||
assert r.is_aligned()
|
||||
|
||||
self._payload += (left - crc_overhead) / 8
|
||||
self._samples += (nordbif + 1) * 1024
|
||||
self._last = r.get_position() / 8
|
||||
|
||||
self.parsed_frames += 1
|
||||
return True
|
||||
|
||||
|
||||
class ProgramConfigElement(object):
|
||||
|
||||
element_instance_tag = None
|
||||
object_type = None
|
||||
sampling_frequency_index = None
|
||||
channels = None
|
||||
|
||||
def __init__(self, r):
|
||||
"""Reads the program_config_element()
|
||||
|
||||
Raises BitReaderError
|
||||
"""
|
||||
|
||||
self.element_instance_tag = r.bits(4)
|
||||
self.object_type = r.bits(2)
|
||||
self.sampling_frequency_index = r.bits(4)
|
||||
num_front_channel_elements = r.bits(4)
|
||||
num_side_channel_elements = r.bits(4)
|
||||
num_back_channel_elements = r.bits(4)
|
||||
num_lfe_channel_elements = r.bits(2)
|
||||
num_assoc_data_elements = r.bits(3)
|
||||
num_valid_cc_elements = r.bits(4)
|
||||
|
||||
mono_mixdown_present = r.bits(1)
|
||||
if mono_mixdown_present == 1:
|
||||
r.skip(4)
|
||||
stereo_mixdown_present = r.bits(1)
|
||||
if stereo_mixdown_present == 1:
|
||||
r.skip(4)
|
||||
matrix_mixdown_idx_present = r.bits(1)
|
||||
if matrix_mixdown_idx_present == 1:
|
||||
r.skip(3)
|
||||
|
||||
elms = num_front_channel_elements + num_side_channel_elements + \
|
||||
num_back_channel_elements
|
||||
channels = 0
|
||||
for i in xrange(elms):
|
||||
channels += 1
|
||||
element_is_cpe = r.bits(1)
|
||||
if element_is_cpe:
|
||||
channels += 1
|
||||
r.skip(4)
|
||||
channels += num_lfe_channel_elements
|
||||
self.channels = channels
|
||||
|
||||
r.skip(4 * num_lfe_channel_elements)
|
||||
r.skip(4 * num_assoc_data_elements)
|
||||
r.skip(5 * num_valid_cc_elements)
|
||||
r.align()
|
||||
comment_field_bytes = r.bits(8)
|
||||
r.skip(8 * comment_field_bytes)
|
||||
|
||||
|
||||
class AACError(MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class AACInfo(StreamInfo):
|
||||
"""AAC stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* channels -- number of audio channels
|
||||
* length -- file length in seconds, as a float
|
||||
* sample_rate -- audio sampling rate in Hz
|
||||
* bitrate -- audio bitrate, in bits per second
|
||||
|
||||
The length of the stream is just a guess and might not be correct.
|
||||
"""
|
||||
|
||||
channels = 0
|
||||
length = 0
|
||||
sample_rate = 0
|
||||
bitrate = 0
|
||||
|
||||
def __init__(self, fileobj):
|
||||
# skip id3v2 header
|
||||
start_offset = 0
|
||||
header = fileobj.read(10)
|
||||
from mutagen.id3 import BitPaddedInt
|
||||
if header.startswith(b"ID3"):
|
||||
size = BitPaddedInt(header[6:])
|
||||
start_offset = size + 10
|
||||
|
||||
fileobj.seek(start_offset)
|
||||
adif = fileobj.read(4)
|
||||
if adif == b"ADIF":
|
||||
self._parse_adif(fileobj)
|
||||
self._type = "ADIF"
|
||||
else:
|
||||
self._parse_adts(fileobj, start_offset)
|
||||
self._type = "ADTS"
|
||||
|
||||
def _parse_adif(self, fileobj):
|
||||
r = BitReader(fileobj)
|
||||
try:
|
||||
copyright_id_present = r.bits(1)
|
||||
if copyright_id_present:
|
||||
r.skip(72) # copyright_id
|
||||
r.skip(1 + 1) # original_copy, home
|
||||
bitstream_type = r.bits(1)
|
||||
self.bitrate = r.bits(23)
|
||||
npce = r.bits(4)
|
||||
if bitstream_type == 0:
|
||||
r.skip(20) # adif_buffer_fullness
|
||||
|
||||
pce = ProgramConfigElement(r)
|
||||
try:
|
||||
self.sample_rate = _FREQS[pce.sampling_frequency_index]
|
||||
except IndexError:
|
||||
pass
|
||||
self.channels = pce.channels
|
||||
|
||||
# other pces..
|
||||
for i in xrange(npce):
|
||||
ProgramConfigElement(r)
|
||||
r.align()
|
||||
except BitReaderError as e:
|
||||
raise AACError(e)
|
||||
|
||||
# use bitrate + data size to guess length
|
||||
start = fileobj.tell()
|
||||
fileobj.seek(0, 2)
|
||||
length = fileobj.tell() - start
|
||||
if self.bitrate != 0:
|
||||
self.length = (8.0 * length) / self.bitrate
|
||||
|
||||
def _parse_adts(self, fileobj, start_offset):
|
||||
max_initial_read = 512
|
||||
max_resync_read = 10
|
||||
max_sync_tries = 10
|
||||
|
||||
frames_max = 100
|
||||
frames_needed = 3
|
||||
|
||||
# Try up to X times to find a sync word and read up to Y frames.
|
||||
# If more than Z frames are valid we assume a valid stream
|
||||
offset = start_offset
|
||||
for i in xrange(max_sync_tries):
|
||||
fileobj.seek(offset)
|
||||
s = _ADTSStream.find_stream(fileobj, max_initial_read)
|
||||
if s is None:
|
||||
raise AACError("sync not found")
|
||||
# start right after the last found offset
|
||||
offset += s.offset + 1
|
||||
|
||||
for i in xrange(frames_max):
|
||||
if not s.parse_frame():
|
||||
break
|
||||
if not s.sync(max_resync_read):
|
||||
break
|
||||
|
||||
if s.parsed_frames >= frames_needed:
|
||||
break
|
||||
else:
|
||||
raise AACError(
|
||||
"no valid stream found (only %d frames)" % s.parsed_frames)
|
||||
|
||||
self.sample_rate = s.frequency
|
||||
self.channels = s.channels
|
||||
self.bitrate = s.bitrate
|
||||
|
||||
# size from stream start to end of file
|
||||
fileobj.seek(0, 2)
|
||||
stream_size = fileobj.tell() - (offset + s.offset)
|
||||
# approx
|
||||
self.length = float(s.samples * stream_size) / (s.size * s.frequency)
|
||||
|
||||
def pprint(self):
|
||||
return u"AAC (%s), %d Hz, %.2f seconds, %d channel(s), %d bps" % (
|
||||
self._type, self.sample_rate, self.length, self.channels,
|
||||
self.bitrate)
|
||||
|
||||
|
||||
class AAC(FileType):
|
||||
"""Load ADTS or ADIF streams containing AAC.
|
||||
|
||||
Tagging is not supported.
|
||||
Use the ID3/APEv2 classes directly instead.
|
||||
"""
|
||||
|
||||
_mimes = ["audio/x-aac"]
|
||||
|
||||
def load(self, filename):
|
||||
self.filename = filename
|
||||
with open(filename, "rb") as h:
|
||||
self.info = AACInfo(h)
|
||||
|
||||
def add_tags(self):
|
||||
raise AACError("doesn't support tags")
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
filename = filename.lower()
|
||||
s = endswith(filename, ".aac") or endswith(filename, ".adts") or \
|
||||
endswith(filename, ".adif")
|
||||
s += b"ADIF" in header
|
||||
return s
|
||||
|
||||
|
||||
Open = AAC
|
||||
error = AACError
|
||||
|
||||
__all__ = ["AAC", "Open"]
|
||||
|
|
@ -1,357 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2014 Evan Purkhiser
|
||||
# 2014 Ben Ockmore
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""AIFF audio stream information and tags."""
|
||||
|
||||
import sys
|
||||
import struct
|
||||
from struct import pack
|
||||
|
||||
from ._compat import endswith, text_type, reraise
|
||||
from mutagen import StreamInfo, FileType
|
||||
|
||||
from mutagen.id3 import ID3
|
||||
from mutagen.id3._util import ID3NoHeaderError, error as ID3Error
|
||||
from mutagen._util import resize_bytes, delete_bytes, MutagenError
|
||||
|
||||
__all__ = ["AIFF", "Open", "delete"]
|
||||
|
||||
|
||||
class error(MutagenError, RuntimeError):
|
||||
pass
|
||||
|
||||
|
||||
class InvalidChunk(error, IOError):
|
||||
pass
|
||||
|
||||
|
||||
# based on stdlib's aifc
|
||||
_HUGE_VAL = 1.79769313486231e+308
|
||||
|
||||
|
||||
def is_valid_chunk_id(id):
|
||||
assert isinstance(id, text_type)
|
||||
|
||||
return ((len(id) <= 4) and (min(id) >= u' ') and
|
||||
(max(id) <= u'~'))
|
||||
|
||||
|
||||
def read_float(data): # 10 bytes
|
||||
expon, himant, lomant = struct.unpack('>hLL', data)
|
||||
sign = 1
|
||||
if expon < 0:
|
||||
sign = -1
|
||||
expon = expon + 0x8000
|
||||
if expon == himant == lomant == 0:
|
||||
f = 0.0
|
||||
elif expon == 0x7FFF:
|
||||
f = _HUGE_VAL
|
||||
else:
|
||||
expon = expon - 16383
|
||||
f = (himant * 0x100000000 + lomant) * pow(2.0, expon - 63)
|
||||
return sign * f
|
||||
|
||||
|
||||
class IFFChunk(object):
|
||||
"""Representation of a single IFF chunk"""
|
||||
|
||||
# Chunk headers are 8 bytes long (4 for ID and 4 for the size)
|
||||
HEADER_SIZE = 8
|
||||
|
||||
def __init__(self, fileobj, parent_chunk=None):
|
||||
self.__fileobj = fileobj
|
||||
self.parent_chunk = parent_chunk
|
||||
self.offset = fileobj.tell()
|
||||
|
||||
header = fileobj.read(self.HEADER_SIZE)
|
||||
if len(header) < self.HEADER_SIZE:
|
||||
raise InvalidChunk()
|
||||
|
||||
self.id, self.data_size = struct.unpack('>4si', header)
|
||||
|
||||
try:
|
||||
self.id = self.id.decode('ascii')
|
||||
except UnicodeDecodeError:
|
||||
raise InvalidChunk()
|
||||
|
||||
if not is_valid_chunk_id(self.id):
|
||||
raise InvalidChunk()
|
||||
|
||||
self.size = self.HEADER_SIZE + self.data_size
|
||||
self.data_offset = fileobj.tell()
|
||||
|
||||
def read(self):
|
||||
"""Read the chunks data"""
|
||||
|
||||
self.__fileobj.seek(self.data_offset)
|
||||
return self.__fileobj.read(self.data_size)
|
||||
|
||||
def write(self, data):
|
||||
"""Write the chunk data"""
|
||||
|
||||
if len(data) > self.data_size:
|
||||
raise ValueError
|
||||
|
||||
self.__fileobj.seek(self.data_offset)
|
||||
self.__fileobj.write(data)
|
||||
|
||||
def delete(self):
|
||||
"""Removes the chunk from the file"""
|
||||
|
||||
delete_bytes(self.__fileobj, self.size, self.offset)
|
||||
if self.parent_chunk is not None:
|
||||
self.parent_chunk._update_size(
|
||||
self.parent_chunk.data_size - self.size)
|
||||
|
||||
def _update_size(self, data_size):
|
||||
"""Update the size of the chunk"""
|
||||
|
||||
self.__fileobj.seek(self.offset + 4)
|
||||
self.__fileobj.write(pack('>I', data_size))
|
||||
if self.parent_chunk is not None:
|
||||
size_diff = self.data_size - data_size
|
||||
self.parent_chunk._update_size(
|
||||
self.parent_chunk.data_size - size_diff)
|
||||
self.data_size = data_size
|
||||
self.size = data_size + self.HEADER_SIZE
|
||||
|
||||
def resize(self, new_data_size):
|
||||
"""Resize the file and update the chunk sizes"""
|
||||
|
||||
resize_bytes(
|
||||
self.__fileobj, self.data_size, new_data_size, self.data_offset)
|
||||
self._update_size(new_data_size)
|
||||
|
||||
|
||||
class IFFFile(object):
|
||||
"""Representation of a IFF file"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
self.__fileobj = fileobj
|
||||
self.__chunks = {}
|
||||
|
||||
# AIFF Files always start with the FORM chunk which contains a 4 byte
|
||||
# ID before the start of other chunks
|
||||
fileobj.seek(0)
|
||||
self.__chunks[u'FORM'] = IFFChunk(fileobj)
|
||||
|
||||
# Skip past the 4 byte FORM id
|
||||
fileobj.seek(IFFChunk.HEADER_SIZE + 4)
|
||||
|
||||
# Where the next chunk can be located. We need to keep track of this
|
||||
# since the size indicated in the FORM header may not match up with the
|
||||
# offset determined from the size of the last chunk in the file
|
||||
self.__next_offset = fileobj.tell()
|
||||
|
||||
# Load all of the chunks
|
||||
while True:
|
||||
try:
|
||||
chunk = IFFChunk(fileobj, self[u'FORM'])
|
||||
except InvalidChunk:
|
||||
break
|
||||
self.__chunks[chunk.id.strip()] = chunk
|
||||
|
||||
# Calculate the location of the next chunk,
|
||||
# considering the pad byte
|
||||
self.__next_offset = chunk.offset + chunk.size
|
||||
self.__next_offset += self.__next_offset % 2
|
||||
fileobj.seek(self.__next_offset)
|
||||
|
||||
def __contains__(self, id_):
|
||||
"""Check if the IFF file contains a specific chunk"""
|
||||
|
||||
assert isinstance(id_, text_type)
|
||||
|
||||
if not is_valid_chunk_id(id_):
|
||||
raise KeyError("AIFF key must be four ASCII characters.")
|
||||
|
||||
return id_ in self.__chunks
|
||||
|
||||
def __getitem__(self, id_):
|
||||
"""Get a chunk from the IFF file"""
|
||||
|
||||
assert isinstance(id_, text_type)
|
||||
|
||||
if not is_valid_chunk_id(id_):
|
||||
raise KeyError("AIFF key must be four ASCII characters.")
|
||||
|
||||
try:
|
||||
return self.__chunks[id_]
|
||||
except KeyError:
|
||||
raise KeyError(
|
||||
"%r has no %r chunk" % (self.__fileobj.name, id_))
|
||||
|
||||
def __delitem__(self, id_):
|
||||
"""Remove a chunk from the IFF file"""
|
||||
|
||||
assert isinstance(id_, text_type)
|
||||
|
||||
if not is_valid_chunk_id(id_):
|
||||
raise KeyError("AIFF key must be four ASCII characters.")
|
||||
|
||||
self.__chunks.pop(id_).delete()
|
||||
|
||||
def insert_chunk(self, id_):
|
||||
"""Insert a new chunk at the end of the IFF file"""
|
||||
|
||||
assert isinstance(id_, text_type)
|
||||
|
||||
if not is_valid_chunk_id(id_):
|
||||
raise KeyError("AIFF key must be four ASCII characters.")
|
||||
|
||||
self.__fileobj.seek(self.__next_offset)
|
||||
self.__fileobj.write(pack('>4si', id_.ljust(4).encode('ascii'), 0))
|
||||
self.__fileobj.seek(self.__next_offset)
|
||||
chunk = IFFChunk(self.__fileobj, self[u'FORM'])
|
||||
self[u'FORM']._update_size(self[u'FORM'].data_size + chunk.size)
|
||||
|
||||
self.__chunks[id_] = chunk
|
||||
self.__next_offset = chunk.offset + chunk.size
|
||||
|
||||
|
||||
class AIFFInfo(StreamInfo):
|
||||
"""AIFF audio stream information.
|
||||
|
||||
Information is parsed from the COMM chunk of the AIFF file
|
||||
|
||||
Useful attributes:
|
||||
|
||||
* length -- audio length, in seconds
|
||||
* bitrate -- audio bitrate, in bits per second
|
||||
* channels -- The number of audio channels
|
||||
* sample_rate -- audio sample rate, in Hz
|
||||
* sample_size -- The audio sample size
|
||||
"""
|
||||
|
||||
length = 0
|
||||
bitrate = 0
|
||||
channels = 0
|
||||
sample_rate = 0
|
||||
|
||||
def __init__(self, fileobj):
|
||||
iff = IFFFile(fileobj)
|
||||
try:
|
||||
common_chunk = iff[u'COMM']
|
||||
except KeyError as e:
|
||||
raise error(str(e))
|
||||
|
||||
data = common_chunk.read()
|
||||
|
||||
info = struct.unpack('>hLh10s', data[:18])
|
||||
channels, frame_count, sample_size, sample_rate = info
|
||||
|
||||
self.sample_rate = int(read_float(sample_rate))
|
||||
self.sample_size = sample_size
|
||||
self.channels = channels
|
||||
self.bitrate = channels * sample_size * self.sample_rate
|
||||
self.length = frame_count / float(self.sample_rate)
|
||||
|
||||
def pprint(self):
|
||||
return u"%d channel AIFF @ %d bps, %s Hz, %.2f seconds" % (
|
||||
self.channels, self.bitrate, self.sample_rate, self.length)
|
||||
|
||||
|
||||
class _IFFID3(ID3):
|
||||
"""A AIFF file with ID3v2 tags"""
|
||||
|
||||
def _pre_load_header(self, fileobj):
|
||||
try:
|
||||
fileobj.seek(IFFFile(fileobj)[u'ID3'].data_offset)
|
||||
except (InvalidChunk, KeyError):
|
||||
raise ID3NoHeaderError("No ID3 chunk")
|
||||
|
||||
def save(self, filename=None, v2_version=4, v23_sep='/', padding=None):
|
||||
"""Save ID3v2 data to the AIFF file"""
|
||||
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
|
||||
# Unlike the parent ID3.save method, we won't save to a blank file
|
||||
# since we would have to construct a empty AIFF file
|
||||
with open(filename, 'rb+') as fileobj:
|
||||
iff_file = IFFFile(fileobj)
|
||||
|
||||
if u'ID3' not in iff_file:
|
||||
iff_file.insert_chunk(u'ID3')
|
||||
|
||||
chunk = iff_file[u'ID3']
|
||||
|
||||
try:
|
||||
data = self._prepare_data(
|
||||
fileobj, chunk.data_offset, chunk.data_size, v2_version,
|
||||
v23_sep, padding)
|
||||
except ID3Error as e:
|
||||
reraise(error, e, sys.exc_info()[2])
|
||||
|
||||
new_size = len(data)
|
||||
new_size += new_size % 2 # pad byte
|
||||
assert new_size % 2 == 0
|
||||
chunk.resize(new_size)
|
||||
data += (new_size - len(data)) * b'\x00'
|
||||
assert new_size == len(data)
|
||||
chunk.write(data)
|
||||
|
||||
def delete(self, filename=None):
|
||||
"""Completely removes the ID3 chunk from the AIFF file"""
|
||||
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
delete(filename)
|
||||
self.clear()
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Completely removes the ID3 chunk from the AIFF file"""
|
||||
|
||||
with open(filename, "rb+") as file_:
|
||||
try:
|
||||
del IFFFile(file_)[u'ID3']
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
|
||||
class AIFF(FileType):
|
||||
"""An AIFF audio file.
|
||||
|
||||
:ivar info: :class:`AIFFInfo`
|
||||
:ivar tags: :class:`ID3`
|
||||
"""
|
||||
|
||||
_mimes = ["audio/aiff", "audio/x-aiff"]
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
filename = filename.lower()
|
||||
|
||||
return (header.startswith(b"FORM") * 2 + endswith(filename, b".aif") +
|
||||
endswith(filename, b".aiff") + endswith(filename, b".aifc"))
|
||||
|
||||
def add_tags(self):
|
||||
"""Add an empty ID3 tag to the file."""
|
||||
if self.tags is None:
|
||||
self.tags = _IFFID3()
|
||||
else:
|
||||
raise error("an ID3 tag already exists")
|
||||
|
||||
def load(self, filename, **kwargs):
|
||||
"""Load stream and tag information from a file."""
|
||||
self.filename = filename
|
||||
|
||||
try:
|
||||
self.tags = _IFFID3(filename, **kwargs)
|
||||
except ID3NoHeaderError:
|
||||
self.tags = None
|
||||
except ID3Error as e:
|
||||
raise error(e)
|
||||
|
||||
with open(filename, "rb") as fileobj:
|
||||
self.info = AIFFInfo(fileobj)
|
||||
|
||||
|
||||
Open = AIFF
|
||||
|
|
@ -1,710 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2005 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""APEv2 reading and writing.
|
||||
|
||||
The APEv2 format is most commonly used with Musepack files, but is
|
||||
also the format of choice for WavPack and other formats. Some MP3s
|
||||
also have APEv2 tags, but this can cause problems with many MP3
|
||||
decoders and taggers.
|
||||
|
||||
APEv2 tags, like Vorbis comments, are freeform key=value pairs. APEv2
|
||||
keys can be any ASCII string with characters from 0x20 to 0x7E,
|
||||
between 2 and 255 characters long. Keys are case-sensitive, but
|
||||
readers are recommended to be case insensitive, and it is forbidden to
|
||||
multiple keys which differ only in case. Keys are usually stored
|
||||
title-cased (e.g. 'Artist' rather than 'artist').
|
||||
|
||||
APEv2 values are slightly more structured than Vorbis comments; values
|
||||
are flagged as one of text, binary, or an external reference (usually
|
||||
a URI).
|
||||
|
||||
Based off the format specification found at
|
||||
http://wiki.hydrogenaudio.org/index.php?title=APEv2_specification.
|
||||
"""
|
||||
|
||||
__all__ = ["APEv2", "APEv2File", "Open", "delete"]
|
||||
|
||||
import sys
|
||||
import struct
|
||||
from collections import MutableSequence
|
||||
|
||||
from ._compat import (cBytesIO, PY3, text_type, PY2, reraise, swap_to_string,
|
||||
xrange)
|
||||
from mutagen import Metadata, FileType, StreamInfo
|
||||
from mutagen._util import (DictMixin, cdata, delete_bytes, total_ordering,
|
||||
MutagenError)
|
||||
|
||||
|
||||
def is_valid_apev2_key(key):
|
||||
if not isinstance(key, text_type):
|
||||
if PY3:
|
||||
raise TypeError("APEv2 key must be str")
|
||||
|
||||
try:
|
||||
key = key.decode('ascii')
|
||||
except UnicodeDecodeError:
|
||||
return False
|
||||
|
||||
# PY26 - Change to set literal syntax (since set is faster than list here)
|
||||
return ((2 <= len(key) <= 255) and (min(key) >= u' ') and
|
||||
(max(key) <= u'~') and
|
||||
(key not in [u"OggS", u"TAG", u"ID3", u"MP+"]))
|
||||
|
||||
# There are three different kinds of APE tag values.
|
||||
# "0: Item contains text information coded in UTF-8
|
||||
# 1: Item contains binary information
|
||||
# 2: Item is a locator of external stored information [e.g. URL]
|
||||
# 3: reserved"
|
||||
TEXT, BINARY, EXTERNAL = xrange(3)
|
||||
|
||||
HAS_HEADER = 1 << 31
|
||||
HAS_NO_FOOTER = 1 << 30
|
||||
IS_HEADER = 1 << 29
|
||||
|
||||
|
||||
class error(IOError, MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class APENoHeaderError(error, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class APEUnsupportedVersionError(error, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class APEBadItemError(error, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class _APEv2Data(object):
|
||||
# Store offsets of the important parts of the file.
|
||||
start = header = data = footer = end = None
|
||||
# Footer or header; seek here and read 32 to get version/size/items/flags
|
||||
metadata = None
|
||||
# Actual tag data
|
||||
tag = None
|
||||
|
||||
version = None
|
||||
size = None
|
||||
items = None
|
||||
flags = 0
|
||||
|
||||
# The tag is at the start rather than the end. A tag at both
|
||||
# the start and end of the file (i.e. the tag is the whole file)
|
||||
# is not considered to be at the start.
|
||||
is_at_start = False
|
||||
|
||||
def __init__(self, fileobj):
|
||||
self.__find_metadata(fileobj)
|
||||
|
||||
if self.header is None:
|
||||
self.metadata = self.footer
|
||||
elif self.footer is None:
|
||||
self.metadata = self.header
|
||||
else:
|
||||
self.metadata = max(self.header, self.footer)
|
||||
|
||||
if self.metadata is None:
|
||||
return
|
||||
|
||||
self.__fill_missing(fileobj)
|
||||
self.__fix_brokenness(fileobj)
|
||||
if self.data is not None:
|
||||
fileobj.seek(self.data)
|
||||
self.tag = fileobj.read(self.size)
|
||||
|
||||
def __find_metadata(self, fileobj):
|
||||
# Try to find a header or footer.
|
||||
|
||||
# Check for a simple footer.
|
||||
try:
|
||||
fileobj.seek(-32, 2)
|
||||
except IOError:
|
||||
fileobj.seek(0, 2)
|
||||
return
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
fileobj.seek(-8, 1)
|
||||
self.footer = self.metadata = fileobj.tell()
|
||||
return
|
||||
|
||||
# Check for an APEv2 tag followed by an ID3v1 tag at the end.
|
||||
try:
|
||||
fileobj.seek(-128, 2)
|
||||
if fileobj.read(3) == b"TAG":
|
||||
|
||||
fileobj.seek(-35, 1) # "TAG" + header length
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
fileobj.seek(-8, 1)
|
||||
self.footer = fileobj.tell()
|
||||
return
|
||||
|
||||
# ID3v1 tag at the end, maybe preceded by Lyrics3v2.
|
||||
# (http://www.id3.org/lyrics3200.html)
|
||||
# (header length - "APETAGEX") - "LYRICS200"
|
||||
fileobj.seek(15, 1)
|
||||
if fileobj.read(9) == b'LYRICS200':
|
||||
fileobj.seek(-15, 1) # "LYRICS200" + size tag
|
||||
try:
|
||||
offset = int(fileobj.read(6))
|
||||
except ValueError:
|
||||
raise IOError
|
||||
|
||||
fileobj.seek(-32 - offset - 6, 1)
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
fileobj.seek(-8, 1)
|
||||
self.footer = fileobj.tell()
|
||||
return
|
||||
|
||||
except IOError:
|
||||
pass
|
||||
|
||||
# Check for a tag at the start.
|
||||
fileobj.seek(0, 0)
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
self.is_at_start = True
|
||||
self.header = 0
|
||||
|
||||
def __fill_missing(self, fileobj):
|
||||
fileobj.seek(self.metadata + 8)
|
||||
self.version = fileobj.read(4)
|
||||
self.size = cdata.uint_le(fileobj.read(4))
|
||||
self.items = cdata.uint_le(fileobj.read(4))
|
||||
self.flags = cdata.uint_le(fileobj.read(4))
|
||||
|
||||
if self.header is not None:
|
||||
self.data = self.header + 32
|
||||
# If we're reading the header, the size is the header
|
||||
# offset + the size, which includes the footer.
|
||||
self.end = self.data + self.size
|
||||
fileobj.seek(self.end - 32, 0)
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
self.footer = self.end - 32
|
||||
elif self.footer is not None:
|
||||
self.end = self.footer + 32
|
||||
self.data = self.end - self.size
|
||||
if self.flags & HAS_HEADER:
|
||||
self.header = self.data - 32
|
||||
else:
|
||||
self.header = self.data
|
||||
else:
|
||||
raise APENoHeaderError("No APE tag found")
|
||||
|
||||
# exclude the footer from size
|
||||
if self.footer is not None:
|
||||
self.size -= 32
|
||||
|
||||
def __fix_brokenness(self, fileobj):
|
||||
# Fix broken tags written with PyMusepack.
|
||||
if self.header is not None:
|
||||
start = self.header
|
||||
else:
|
||||
start = self.data
|
||||
fileobj.seek(start)
|
||||
|
||||
while start > 0:
|
||||
# Clean up broken writing from pre-Mutagen PyMusepack.
|
||||
# It didn't remove the first 24 bytes of header.
|
||||
try:
|
||||
fileobj.seek(-24, 1)
|
||||
except IOError:
|
||||
break
|
||||
else:
|
||||
if fileobj.read(8) == b"APETAGEX":
|
||||
fileobj.seek(-8, 1)
|
||||
start = fileobj.tell()
|
||||
else:
|
||||
break
|
||||
self.start = start
|
||||
|
||||
|
||||
class _CIDictProxy(DictMixin):
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
self.__casemap = {}
|
||||
self.__dict = {}
|
||||
super(_CIDictProxy, self).__init__(*args, **kwargs)
|
||||
# Internally all names are stored as lowercase, but the case
|
||||
# they were set with is remembered and used when saving. This
|
||||
# is roughly in line with the standard, which says that keys
|
||||
# are case-sensitive but two keys differing only in case are
|
||||
# not allowed, and recommends case-insensitive
|
||||
# implementations.
|
||||
|
||||
def __getitem__(self, key):
|
||||
return self.__dict[key.lower()]
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
lower = key.lower()
|
||||
self.__casemap[lower] = key
|
||||
self.__dict[lower] = value
|
||||
|
||||
def __delitem__(self, key):
|
||||
lower = key.lower()
|
||||
del(self.__casemap[lower])
|
||||
del(self.__dict[lower])
|
||||
|
||||
def keys(self):
|
||||
return [self.__casemap.get(key, key) for key in self.__dict.keys()]
|
||||
|
||||
|
||||
class APEv2(_CIDictProxy, Metadata):
|
||||
"""A file with an APEv2 tag.
|
||||
|
||||
ID3v1 tags are silently ignored and overwritten.
|
||||
"""
|
||||
|
||||
filename = None
|
||||
|
||||
def pprint(self):
|
||||
"""Return tag key=value pairs in a human-readable format."""
|
||||
|
||||
items = sorted(self.items())
|
||||
return u"\n".join(u"%s=%s" % (k, v.pprint()) for k, v in items)
|
||||
|
||||
def load(self, filename):
|
||||
"""Load tags from a filename."""
|
||||
|
||||
self.filename = filename
|
||||
with open(filename, "rb") as fileobj:
|
||||
data = _APEv2Data(fileobj)
|
||||
|
||||
if data.tag:
|
||||
self.clear()
|
||||
self.__parse_tag(data.tag, data.items)
|
||||
else:
|
||||
raise APENoHeaderError("No APE tag found")
|
||||
|
||||
def __parse_tag(self, tag, count):
|
||||
fileobj = cBytesIO(tag)
|
||||
|
||||
for i in xrange(count):
|
||||
size_data = fileobj.read(4)
|
||||
# someone writes wrong item counts
|
||||
if not size_data:
|
||||
break
|
||||
size = cdata.uint_le(size_data)
|
||||
flags = cdata.uint_le(fileobj.read(4))
|
||||
|
||||
# Bits 1 and 2 bits are flags, 0-3
|
||||
# Bit 0 is read/write flag, ignored
|
||||
kind = (flags & 6) >> 1
|
||||
if kind == 3:
|
||||
raise APEBadItemError("value type must be 0, 1, or 2")
|
||||
key = value = fileobj.read(1)
|
||||
while key[-1:] != b'\x00' and value:
|
||||
value = fileobj.read(1)
|
||||
key += value
|
||||
if key[-1:] == b"\x00":
|
||||
key = key[:-1]
|
||||
if PY3:
|
||||
try:
|
||||
key = key.decode("ascii")
|
||||
except UnicodeError as err:
|
||||
reraise(APEBadItemError, err, sys.exc_info()[2])
|
||||
value = fileobj.read(size)
|
||||
|
||||
value = _get_value_type(kind)._new(value)
|
||||
|
||||
self[key] = value
|
||||
|
||||
def __getitem__(self, key):
|
||||
if not is_valid_apev2_key(key):
|
||||
raise KeyError("%r is not a valid APEv2 key" % key)
|
||||
if PY2:
|
||||
key = key.encode('ascii')
|
||||
|
||||
return super(APEv2, self).__getitem__(key)
|
||||
|
||||
def __delitem__(self, key):
|
||||
if not is_valid_apev2_key(key):
|
||||
raise KeyError("%r is not a valid APEv2 key" % key)
|
||||
if PY2:
|
||||
key = key.encode('ascii')
|
||||
|
||||
super(APEv2, self).__delitem__(key)
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
"""'Magic' value setter.
|
||||
|
||||
This function tries to guess at what kind of value you want to
|
||||
store. If you pass in a valid UTF-8 or Unicode string, it
|
||||
treats it as a text value. If you pass in a list, it treats it
|
||||
as a list of string/Unicode values. If you pass in a string
|
||||
that is not valid UTF-8, it assumes it is a binary value.
|
||||
|
||||
Python 3: all bytes will be assumed to be a byte value, even
|
||||
if they are valid utf-8.
|
||||
|
||||
If you need to force a specific type of value (e.g. binary
|
||||
data that also happens to be valid UTF-8, or an external
|
||||
reference), use the APEValue factory and set the value to the
|
||||
result of that::
|
||||
|
||||
from mutagen.apev2 import APEValue, EXTERNAL
|
||||
tag['Website'] = APEValue('http://example.org', EXTERNAL)
|
||||
"""
|
||||
|
||||
if not is_valid_apev2_key(key):
|
||||
raise KeyError("%r is not a valid APEv2 key" % key)
|
||||
|
||||
if PY2:
|
||||
key = key.encode('ascii')
|
||||
|
||||
if not isinstance(value, _APEValue):
|
||||
# let's guess at the content if we're not already a value...
|
||||
if isinstance(value, text_type):
|
||||
# unicode? we've got to be text.
|
||||
value = APEValue(value, TEXT)
|
||||
elif isinstance(value, list):
|
||||
items = []
|
||||
for v in value:
|
||||
if not isinstance(v, text_type):
|
||||
if PY3:
|
||||
raise TypeError("item in list not str")
|
||||
v = v.decode("utf-8")
|
||||
items.append(v)
|
||||
|
||||
# list? text.
|
||||
value = APEValue(u"\0".join(items), TEXT)
|
||||
else:
|
||||
if PY3:
|
||||
value = APEValue(value, BINARY)
|
||||
else:
|
||||
try:
|
||||
value.decode("utf-8")
|
||||
except UnicodeError:
|
||||
# invalid UTF8 text, probably binary
|
||||
value = APEValue(value, BINARY)
|
||||
else:
|
||||
# valid UTF8, probably text
|
||||
value = APEValue(value, TEXT)
|
||||
|
||||
super(APEv2, self).__setitem__(key, value)
|
||||
|
||||
def save(self, filename=None):
|
||||
"""Save changes to a file.
|
||||
|
||||
If no filename is given, the one most recently loaded is used.
|
||||
|
||||
Tags are always written at the end of the file, and include
|
||||
a header and a footer.
|
||||
"""
|
||||
|
||||
filename = filename or self.filename
|
||||
try:
|
||||
fileobj = open(filename, "r+b")
|
||||
except IOError:
|
||||
fileobj = open(filename, "w+b")
|
||||
data = _APEv2Data(fileobj)
|
||||
|
||||
if data.is_at_start:
|
||||
delete_bytes(fileobj, data.end - data.start, data.start)
|
||||
elif data.start is not None:
|
||||
fileobj.seek(data.start)
|
||||
# Delete an ID3v1 tag if present, too.
|
||||
fileobj.truncate()
|
||||
fileobj.seek(0, 2)
|
||||
|
||||
tags = []
|
||||
for key, value in self.items():
|
||||
# Packed format for an item:
|
||||
# 4B: Value length
|
||||
# 4B: Value type
|
||||
# Key name
|
||||
# 1B: Null
|
||||
# Key value
|
||||
value_data = value._write()
|
||||
if not isinstance(key, bytes):
|
||||
key = key.encode("utf-8")
|
||||
tag_data = bytearray()
|
||||
tag_data += struct.pack("<2I", len(value_data), value.kind << 1)
|
||||
tag_data += key + b"\0" + value_data
|
||||
tags.append(bytes(tag_data))
|
||||
|
||||
# "APE tags items should be sorted ascending by size... This is
|
||||
# not a MUST, but STRONGLY recommended. Actually the items should
|
||||
# be sorted by importance/byte, but this is not feasible."
|
||||
tags.sort(key=len)
|
||||
num_tags = len(tags)
|
||||
tags = b"".join(tags)
|
||||
|
||||
header = bytearray(b"APETAGEX")
|
||||
# version, tag size, item count, flags
|
||||
header += struct.pack("<4I", 2000, len(tags) + 32, num_tags,
|
||||
HAS_HEADER | IS_HEADER)
|
||||
header += b"\0" * 8
|
||||
fileobj.write(header)
|
||||
|
||||
fileobj.write(tags)
|
||||
|
||||
footer = bytearray(b"APETAGEX")
|
||||
footer += struct.pack("<4I", 2000, len(tags) + 32, num_tags,
|
||||
HAS_HEADER)
|
||||
footer += b"\0" * 8
|
||||
|
||||
fileobj.write(footer)
|
||||
fileobj.close()
|
||||
|
||||
def delete(self, filename=None):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
filename = filename or self.filename
|
||||
with open(filename, "r+b") as fileobj:
|
||||
data = _APEv2Data(fileobj)
|
||||
if data.start is not None and data.size is not None:
|
||||
delete_bytes(fileobj, data.end - data.start, data.start)
|
||||
|
||||
self.clear()
|
||||
|
||||
|
||||
Open = APEv2
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
try:
|
||||
APEv2(filename).delete()
|
||||
except APENoHeaderError:
|
||||
pass
|
||||
|
||||
|
||||
def _get_value_type(kind):
|
||||
"""Returns a _APEValue subclass or raises ValueError"""
|
||||
|
||||
if kind == TEXT:
|
||||
return APETextValue
|
||||
elif kind == BINARY:
|
||||
return APEBinaryValue
|
||||
elif kind == EXTERNAL:
|
||||
return APEExtValue
|
||||
raise ValueError("unknown kind %r" % kind)
|
||||
|
||||
|
||||
def APEValue(value, kind):
|
||||
"""APEv2 tag value factory.
|
||||
|
||||
Use this if you need to specify the value's type manually. Binary
|
||||
and text data are automatically detected by APEv2.__setitem__.
|
||||
"""
|
||||
|
||||
try:
|
||||
type_ = _get_value_type(kind)
|
||||
except ValueError:
|
||||
raise ValueError("kind must be TEXT, BINARY, or EXTERNAL")
|
||||
else:
|
||||
return type_(value)
|
||||
|
||||
|
||||
class _APEValue(object):
|
||||
|
||||
kind = None
|
||||
value = None
|
||||
|
||||
def __init__(self, value, kind=None):
|
||||
# kind kwarg is for backwards compat
|
||||
if kind is not None and kind != self.kind:
|
||||
raise ValueError
|
||||
self.value = self._validate(value)
|
||||
|
||||
@classmethod
|
||||
def _new(cls, data):
|
||||
instance = cls.__new__(cls)
|
||||
instance._parse(data)
|
||||
return instance
|
||||
|
||||
def _parse(self, data):
|
||||
"""Sets value or raises APEBadItemError"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
def _write(self):
|
||||
"""Returns bytes"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
def _validate(self, value):
|
||||
"""Returns validated value or raises TypeError/ValueErrr"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
def __repr__(self):
|
||||
return "%s(%r, %d)" % (type(self).__name__, self.value, self.kind)
|
||||
|
||||
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class _APEUtf8Value(_APEValue):
|
||||
|
||||
def _parse(self, data):
|
||||
try:
|
||||
self.value = data.decode("utf-8")
|
||||
except UnicodeDecodeError as e:
|
||||
reraise(APEBadItemError, e, sys.exc_info()[2])
|
||||
|
||||
def _validate(self, value):
|
||||
if not isinstance(value, text_type):
|
||||
if PY3:
|
||||
raise TypeError("value not str")
|
||||
else:
|
||||
value = value.decode("utf-8")
|
||||
return value
|
||||
|
||||
def _write(self):
|
||||
return self.value.encode("utf-8")
|
||||
|
||||
def __len__(self):
|
||||
return len(self.value)
|
||||
|
||||
def __bytes__(self):
|
||||
return self._write()
|
||||
|
||||
def __eq__(self, other):
|
||||
return self.value == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return self.value < other
|
||||
|
||||
def __str__(self):
|
||||
return self.value
|
||||
|
||||
|
||||
class APETextValue(_APEUtf8Value, MutableSequence):
|
||||
"""An APEv2 text value.
|
||||
|
||||
Text values are Unicode/UTF-8 strings. They can be accessed like
|
||||
strings (with a null separating the values), or arrays of strings.
|
||||
"""
|
||||
|
||||
kind = TEXT
|
||||
|
||||
def __iter__(self):
|
||||
"""Iterate over the strings of the value (not the characters)"""
|
||||
|
||||
return iter(self.value.split(u"\0"))
|
||||
|
||||
def __getitem__(self, index):
|
||||
return self.value.split(u"\0")[index]
|
||||
|
||||
def __len__(self):
|
||||
return self.value.count(u"\0") + 1
|
||||
|
||||
def __setitem__(self, index, value):
|
||||
if not isinstance(value, text_type):
|
||||
if PY3:
|
||||
raise TypeError("value not str")
|
||||
else:
|
||||
value = value.decode("utf-8")
|
||||
|
||||
values = list(self)
|
||||
values[index] = value
|
||||
self.value = u"\0".join(values)
|
||||
|
||||
def insert(self, index, value):
|
||||
if not isinstance(value, text_type):
|
||||
if PY3:
|
||||
raise TypeError("value not str")
|
||||
else:
|
||||
value = value.decode("utf-8")
|
||||
|
||||
values = list(self)
|
||||
values.insert(index, value)
|
||||
self.value = u"\0".join(values)
|
||||
|
||||
def __delitem__(self, index):
|
||||
values = list(self)
|
||||
del values[index]
|
||||
self.value = u"\0".join(values)
|
||||
|
||||
def pprint(self):
|
||||
return u" / ".join(self)
|
||||
|
||||
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class APEBinaryValue(_APEValue):
|
||||
"""An APEv2 binary value."""
|
||||
|
||||
kind = BINARY
|
||||
|
||||
def _parse(self, data):
|
||||
self.value = data
|
||||
|
||||
def _write(self):
|
||||
return self.value
|
||||
|
||||
def _validate(self, value):
|
||||
if not isinstance(value, bytes):
|
||||
raise TypeError("value not bytes")
|
||||
return bytes(value)
|
||||
|
||||
def __len__(self):
|
||||
return len(self.value)
|
||||
|
||||
def __bytes__(self):
|
||||
return self._write()
|
||||
|
||||
def __eq__(self, other):
|
||||
return self.value == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return self.value < other
|
||||
|
||||
def pprint(self):
|
||||
return u"[%d bytes]" % len(self)
|
||||
|
||||
|
||||
class APEExtValue(_APEUtf8Value):
|
||||
"""An APEv2 external value.
|
||||
|
||||
External values are usually URI or IRI strings.
|
||||
"""
|
||||
|
||||
kind = EXTERNAL
|
||||
|
||||
def pprint(self):
|
||||
return u"[External] %s" % self.value
|
||||
|
||||
|
||||
class APEv2File(FileType):
|
||||
class _Info(StreamInfo):
|
||||
length = 0
|
||||
bitrate = 0
|
||||
|
||||
def __init__(self, fileobj):
|
||||
pass
|
||||
|
||||
@staticmethod
|
||||
def pprint():
|
||||
return u"Unknown format with APEv2 tag."
|
||||
|
||||
def load(self, filename):
|
||||
self.filename = filename
|
||||
self.info = self._Info(open(filename, "rb"))
|
||||
try:
|
||||
self.tags = APEv2(filename)
|
||||
except APENoHeaderError:
|
||||
self.tags = None
|
||||
|
||||
def add_tags(self):
|
||||
if self.tags is None:
|
||||
self.tags = APEv2()
|
||||
else:
|
||||
raise error("%r already has tags: %r" % (self, self.tags))
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
try:
|
||||
fileobj.seek(-160, 2)
|
||||
except IOError:
|
||||
fileobj.seek(0)
|
||||
footer = fileobj.read()
|
||||
return ((b"APETAGEX" in footer) - header.startswith(b"ID3"))
|
||||
|
|
@ -1,319 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2005-2006 Joe Wreschnig
|
||||
# Copyright (C) 2006-2007 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write ASF (Window Media Audio) files."""
|
||||
|
||||
__all__ = ["ASF", "Open"]
|
||||
|
||||
from mutagen import FileType, Metadata, StreamInfo
|
||||
from mutagen._util import resize_bytes, DictMixin
|
||||
from mutagen._compat import string_types, long_, PY3, izip
|
||||
|
||||
from ._util import error, ASFError, ASFHeaderError
|
||||
from ._objects import HeaderObject, MetadataLibraryObject, MetadataObject, \
|
||||
ExtendedContentDescriptionObject, HeaderExtensionObject, \
|
||||
ContentDescriptionObject
|
||||
from ._attrs import ASFGUIDAttribute, ASFWordAttribute, ASFQWordAttribute, \
|
||||
ASFDWordAttribute, ASFBoolAttribute, ASFByteArrayAttribute, \
|
||||
ASFUnicodeAttribute, ASFBaseAttribute, ASFValue
|
||||
|
||||
|
||||
# pyflakes
|
||||
error, ASFError, ASFHeaderError, ASFValue
|
||||
|
||||
|
||||
class ASFInfo(StreamInfo):
|
||||
"""ASF stream information."""
|
||||
|
||||
length = 0.0
|
||||
"""Length in seconds (`float`)"""
|
||||
|
||||
sample_rate = 0
|
||||
"""Sample rate in Hz (`int`)"""
|
||||
|
||||
bitrate = 0
|
||||
"""Bitrate in bps (`int`)"""
|
||||
|
||||
channels = 0
|
||||
"""Number of channels (`int`)"""
|
||||
|
||||
codec_type = u""
|
||||
"""Name of the codec type of the first audio stream or
|
||||
an empty string if unknown. Example: ``Windows Media Audio 9 Standard``
|
||||
(:class:`mutagen.text`)
|
||||
"""
|
||||
|
||||
codec_name = u""
|
||||
"""Name and maybe version of the codec used. Example:
|
||||
``Windows Media Audio 9.1`` (:class:`mutagen.text`)
|
||||
"""
|
||||
|
||||
codec_description = u""
|
||||
"""Further information on the codec used.
|
||||
Example: ``64 kbps, 48 kHz, stereo 2-pass CBR`` (:class:`mutagen.text`)
|
||||
"""
|
||||
|
||||
def __init__(self):
|
||||
self.length = 0.0
|
||||
self.sample_rate = 0
|
||||
self.bitrate = 0
|
||||
self.channels = 0
|
||||
self.codec_type = u""
|
||||
self.codec_name = u""
|
||||
self.codec_description = u""
|
||||
|
||||
def pprint(self):
|
||||
"""Returns a stream information text summary
|
||||
|
||||
:rtype: text
|
||||
"""
|
||||
|
||||
s = u"ASF (%s) %d bps, %s Hz, %d channels, %.2f seconds" % (
|
||||
self.codec_type or self.codec_name or u"???", self.bitrate,
|
||||
self.sample_rate, self.channels, self.length)
|
||||
return s
|
||||
|
||||
|
||||
class ASFTags(list, DictMixin, Metadata):
|
||||
"""Dictionary containing ASF attributes."""
|
||||
|
||||
def __getitem__(self, key):
|
||||
"""A list of values for the key.
|
||||
|
||||
This is a copy, so comment['title'].append('a title') will not
|
||||
work.
|
||||
|
||||
"""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return list.__getitem__(self, key)
|
||||
|
||||
values = [value for (k, value) in self if k == key]
|
||||
if not values:
|
||||
raise KeyError(key)
|
||||
else:
|
||||
return values
|
||||
|
||||
def __delitem__(self, key):
|
||||
"""Delete all values associated with the key."""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return list.__delitem__(self, key)
|
||||
|
||||
to_delete = [x for x in self if x[0] == key]
|
||||
if not to_delete:
|
||||
raise KeyError(key)
|
||||
else:
|
||||
for k in to_delete:
|
||||
self.remove(k)
|
||||
|
||||
def __contains__(self, key):
|
||||
"""Return true if the key has any values."""
|
||||
for k, value in self:
|
||||
if k == key:
|
||||
return True
|
||||
else:
|
||||
return False
|
||||
|
||||
def __setitem__(self, key, values):
|
||||
"""Set a key's value or values.
|
||||
|
||||
Setting a value overwrites all old ones. The value may be a
|
||||
list of Unicode or UTF-8 strings, or a single Unicode or UTF-8
|
||||
string.
|
||||
"""
|
||||
|
||||
# PY3 only
|
||||
if isinstance(key, slice):
|
||||
return list.__setitem__(self, key, values)
|
||||
|
||||
if not isinstance(values, list):
|
||||
values = [values]
|
||||
|
||||
to_append = []
|
||||
for value in values:
|
||||
if not isinstance(value, ASFBaseAttribute):
|
||||
if isinstance(value, string_types):
|
||||
value = ASFUnicodeAttribute(value)
|
||||
elif PY3 and isinstance(value, bytes):
|
||||
value = ASFByteArrayAttribute(value)
|
||||
elif isinstance(value, bool):
|
||||
value = ASFBoolAttribute(value)
|
||||
elif isinstance(value, int):
|
||||
value = ASFDWordAttribute(value)
|
||||
elif isinstance(value, long_):
|
||||
value = ASFQWordAttribute(value)
|
||||
else:
|
||||
raise TypeError("Invalid type %r" % type(value))
|
||||
to_append.append((key, value))
|
||||
|
||||
try:
|
||||
del(self[key])
|
||||
except KeyError:
|
||||
pass
|
||||
|
||||
self.extend(to_append)
|
||||
|
||||
def keys(self):
|
||||
"""Return a sequence of all keys in the comment."""
|
||||
|
||||
return self and set(next(izip(*self)))
|
||||
|
||||
def as_dict(self):
|
||||
"""Return a copy of the comment data in a real dict."""
|
||||
|
||||
d = {}
|
||||
for key, value in self:
|
||||
d.setdefault(key, []).append(value)
|
||||
return d
|
||||
|
||||
def pprint(self):
|
||||
"""Returns a string containing all key, value pairs.
|
||||
|
||||
:rtype: text
|
||||
"""
|
||||
|
||||
return "\n".join("%s=%s" % (k, v) for k, v in self)
|
||||
|
||||
|
||||
UNICODE = ASFUnicodeAttribute.TYPE
|
||||
"""Unicode string type"""
|
||||
|
||||
BYTEARRAY = ASFByteArrayAttribute.TYPE
|
||||
"""Byte array type"""
|
||||
|
||||
BOOL = ASFBoolAttribute.TYPE
|
||||
"""Bool type"""
|
||||
|
||||
DWORD = ASFDWordAttribute.TYPE
|
||||
""""DWord type (uint32)"""
|
||||
|
||||
QWORD = ASFQWordAttribute.TYPE
|
||||
"""QWord type (uint64)"""
|
||||
|
||||
WORD = ASFWordAttribute.TYPE
|
||||
"""Word type (uint16)"""
|
||||
|
||||
GUID = ASFGUIDAttribute.TYPE
|
||||
"""GUID type"""
|
||||
|
||||
|
||||
class ASF(FileType):
|
||||
"""An ASF file, probably containing WMA or WMV.
|
||||
|
||||
:param filename: a filename to load
|
||||
:raises mutagen.asf.error: In case loading fails
|
||||
"""
|
||||
|
||||
_mimes = ["audio/x-ms-wma", "audio/x-ms-wmv", "video/x-ms-asf",
|
||||
"audio/x-wma", "video/x-wmv"]
|
||||
|
||||
info = None
|
||||
"""A `ASFInfo` instance"""
|
||||
|
||||
tags = None
|
||||
"""A `ASFTags` instance"""
|
||||
|
||||
def load(self, filename):
|
||||
self.filename = filename
|
||||
self.info = ASFInfo()
|
||||
self.tags = ASFTags()
|
||||
|
||||
with open(filename, "rb") as fileobj:
|
||||
self._tags = {}
|
||||
|
||||
self._header = HeaderObject.parse_full(self, fileobj)
|
||||
|
||||
for guid in [ContentDescriptionObject.GUID,
|
||||
ExtendedContentDescriptionObject.GUID, MetadataObject.GUID,
|
||||
MetadataLibraryObject.GUID]:
|
||||
self.tags.extend(self._tags.pop(guid, []))
|
||||
|
||||
assert not self._tags
|
||||
|
||||
def save(self, filename=None, padding=None):
|
||||
"""Save tag changes back to the loaded file.
|
||||
|
||||
:param padding: A callback which returns the amount of padding to use.
|
||||
See :class:`mutagen.PaddingInfo`
|
||||
|
||||
:raises mutagen.asf.error: In case saving fails
|
||||
"""
|
||||
|
||||
if filename is not None and filename != self.filename:
|
||||
raise ValueError("saving to another file not supported atm")
|
||||
|
||||
# Move attributes to the right objects
|
||||
self.to_content_description = {}
|
||||
self.to_extended_content_description = {}
|
||||
self.to_metadata = {}
|
||||
self.to_metadata_library = []
|
||||
for name, value in self.tags:
|
||||
library_only = (value.data_size() > 0xFFFF or value.TYPE == GUID)
|
||||
can_cont_desc = value.TYPE == UNICODE
|
||||
|
||||
if library_only or value.language is not None:
|
||||
self.to_metadata_library.append((name, value))
|
||||
elif value.stream is not None:
|
||||
if name not in self.to_metadata:
|
||||
self.to_metadata[name] = value
|
||||
else:
|
||||
self.to_metadata_library.append((name, value))
|
||||
elif name in ContentDescriptionObject.NAMES:
|
||||
if name not in self.to_content_description and can_cont_desc:
|
||||
self.to_content_description[name] = value
|
||||
else:
|
||||
self.to_metadata_library.append((name, value))
|
||||
else:
|
||||
if name not in self.to_extended_content_description:
|
||||
self.to_extended_content_description[name] = value
|
||||
else:
|
||||
self.to_metadata_library.append((name, value))
|
||||
|
||||
# Add missing objects
|
||||
header = self._header
|
||||
if header.get_child(ContentDescriptionObject.GUID) is None:
|
||||
header.objects.append(ContentDescriptionObject())
|
||||
if header.get_child(ExtendedContentDescriptionObject.GUID) is None:
|
||||
header.objects.append(ExtendedContentDescriptionObject())
|
||||
header_ext = header.get_child(HeaderExtensionObject.GUID)
|
||||
if header_ext is None:
|
||||
header_ext = HeaderExtensionObject()
|
||||
header.objects.append(header_ext)
|
||||
if header_ext.get_child(MetadataObject.GUID) is None:
|
||||
header_ext.objects.append(MetadataObject())
|
||||
if header_ext.get_child(MetadataLibraryObject.GUID) is None:
|
||||
header_ext.objects.append(MetadataLibraryObject())
|
||||
|
||||
# Render to file
|
||||
with open(self.filename, "rb+") as fileobj:
|
||||
old_size = header.parse_size(fileobj)[0]
|
||||
data = header.render_full(self, fileobj, old_size, padding)
|
||||
size = len(data)
|
||||
resize_bytes(fileobj, old_size, size, 0)
|
||||
fileobj.seek(0)
|
||||
fileobj.write(data)
|
||||
|
||||
def add_tags(self):
|
||||
raise ASFError
|
||||
|
||||
def delete(self, filename=None):
|
||||
|
||||
if filename is not None and filename != self.filename:
|
||||
raise ValueError("saving to another file not supported atm")
|
||||
|
||||
self.tags.clear()
|
||||
self.save(padding=lambda x: 0)
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return header.startswith(HeaderObject.GUID) * 2
|
||||
|
||||
Open = ASF
|
||||
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -1,438 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2005-2006 Joe Wreschnig
|
||||
# Copyright (C) 2006-2007 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import sys
|
||||
import struct
|
||||
|
||||
from mutagen._compat import swap_to_string, text_type, PY2, reraise
|
||||
from mutagen._util import total_ordering
|
||||
|
||||
from ._util import ASFError
|
||||
|
||||
|
||||
class ASFBaseAttribute(object):
|
||||
"""Generic attribute."""
|
||||
|
||||
TYPE = None
|
||||
|
||||
_TYPES = {}
|
||||
|
||||
value = None
|
||||
"""The Python value of this attribute (type depends on the class)"""
|
||||
|
||||
language = None
|
||||
"""Language"""
|
||||
|
||||
stream = None
|
||||
"""Stream"""
|
||||
|
||||
def __init__(self, value=None, data=None, language=None,
|
||||
stream=None, **kwargs):
|
||||
self.language = language
|
||||
self.stream = stream
|
||||
if data:
|
||||
self.value = self.parse(data, **kwargs)
|
||||
else:
|
||||
if value is None:
|
||||
# we used to support not passing any args and instead assign
|
||||
# them later, keep that working..
|
||||
self.value = None
|
||||
else:
|
||||
self.value = self._validate(value)
|
||||
|
||||
@classmethod
|
||||
def _register(cls, other):
|
||||
cls._TYPES[other.TYPE] = other
|
||||
return other
|
||||
|
||||
@classmethod
|
||||
def _get_type(cls, type_):
|
||||
"""Raises KeyError"""
|
||||
|
||||
return cls._TYPES[type_]
|
||||
|
||||
def _validate(self, value):
|
||||
"""Raises TypeError or ValueError in case the user supplied value
|
||||
isn't valid.
|
||||
"""
|
||||
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
raise NotImplementedError
|
||||
|
||||
def __repr__(self):
|
||||
name = "%s(%r" % (type(self).__name__, self.value)
|
||||
if self.language:
|
||||
name += ", language=%d" % self.language
|
||||
if self.stream:
|
||||
name += ", stream=%d" % self.stream
|
||||
name += ")"
|
||||
return name
|
||||
|
||||
def render(self, name):
|
||||
name = name.encode("utf-16-le") + b"\x00\x00"
|
||||
data = self._render()
|
||||
return (struct.pack("<H", len(name)) + name +
|
||||
struct.pack("<HH", self.TYPE, len(data)) + data)
|
||||
|
||||
def render_m(self, name):
|
||||
name = name.encode("utf-16-le") + b"\x00\x00"
|
||||
if self.TYPE == 2:
|
||||
data = self._render(dword=False)
|
||||
else:
|
||||
data = self._render()
|
||||
return (struct.pack("<HHHHI", 0, self.stream or 0, len(name),
|
||||
self.TYPE, len(data)) + name + data)
|
||||
|
||||
def render_ml(self, name):
|
||||
name = name.encode("utf-16-le") + b"\x00\x00"
|
||||
if self.TYPE == 2:
|
||||
data = self._render(dword=False)
|
||||
else:
|
||||
data = self._render()
|
||||
|
||||
return (struct.pack("<HHHHI", self.language or 0, self.stream or 0,
|
||||
len(name), self.TYPE, len(data)) + name + data)
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFUnicodeAttribute(ASFBaseAttribute):
|
||||
"""Unicode string attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFUnicodeAttribute(u'some text')
|
||||
"""
|
||||
|
||||
TYPE = 0x0000
|
||||
|
||||
def parse(self, data):
|
||||
try:
|
||||
return data.decode("utf-16-le").strip("\x00")
|
||||
except UnicodeDecodeError as e:
|
||||
reraise(ASFError, e, sys.exc_info()[2])
|
||||
|
||||
def _validate(self, value):
|
||||
if not isinstance(value, text_type):
|
||||
if PY2:
|
||||
return value.decode("utf-8")
|
||||
else:
|
||||
raise TypeError("%r not str" % value)
|
||||
return value
|
||||
|
||||
def _render(self):
|
||||
return self.value.encode("utf-16-le") + b"\x00\x00"
|
||||
|
||||
def data_size(self):
|
||||
return len(self._render())
|
||||
|
||||
def __bytes__(self):
|
||||
return self.value.encode("utf-16-le")
|
||||
|
||||
def __str__(self):
|
||||
return self.value
|
||||
|
||||
def __eq__(self, other):
|
||||
return text_type(self) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return text_type(self) < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFByteArrayAttribute(ASFBaseAttribute):
|
||||
"""Byte array attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFByteArrayAttribute(b'1234')
|
||||
"""
|
||||
TYPE = 0x0001
|
||||
|
||||
def parse(self, data):
|
||||
assert isinstance(data, bytes)
|
||||
return data
|
||||
|
||||
def _render(self):
|
||||
assert isinstance(self.value, bytes)
|
||||
return self.value
|
||||
|
||||
def _validate(self, value):
|
||||
if not isinstance(value, bytes):
|
||||
raise TypeError("must be bytes/str: %r" % value)
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
return len(self.value)
|
||||
|
||||
def __bytes__(self):
|
||||
return self.value
|
||||
|
||||
def __str__(self):
|
||||
return "[binary data (%d bytes)]" % len(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return self.value == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return self.value < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFBoolAttribute(ASFBaseAttribute):
|
||||
"""Bool attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFBoolAttribute(True)
|
||||
"""
|
||||
|
||||
TYPE = 0x0002
|
||||
|
||||
def parse(self, data, dword=True):
|
||||
if dword:
|
||||
return struct.unpack("<I", data)[0] == 1
|
||||
else:
|
||||
return struct.unpack("<H", data)[0] == 1
|
||||
|
||||
def _render(self, dword=True):
|
||||
if dword:
|
||||
return struct.pack("<I", bool(self.value))
|
||||
else:
|
||||
return struct.pack("<H", bool(self.value))
|
||||
|
||||
def _validate(self, value):
|
||||
return bool(value)
|
||||
|
||||
def data_size(self):
|
||||
return 4
|
||||
|
||||
def __bool__(self):
|
||||
return bool(self.value)
|
||||
|
||||
def __bytes__(self):
|
||||
return text_type(self.value).encode('utf-8')
|
||||
|
||||
def __str__(self):
|
||||
return text_type(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return bool(self.value) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return bool(self.value) < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFDWordAttribute(ASFBaseAttribute):
|
||||
"""DWORD attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFDWordAttribute(42)
|
||||
"""
|
||||
|
||||
TYPE = 0x0003
|
||||
|
||||
def parse(self, data):
|
||||
return struct.unpack("<L", data)[0]
|
||||
|
||||
def _render(self):
|
||||
return struct.pack("<L", self.value)
|
||||
|
||||
def _validate(self, value):
|
||||
value = int(value)
|
||||
if not 0 <= value <= 2 ** 32 - 1:
|
||||
raise ValueError("Out of range")
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
return 4
|
||||
|
||||
def __int__(self):
|
||||
return self.value
|
||||
|
||||
def __bytes__(self):
|
||||
return text_type(self.value).encode('utf-8')
|
||||
|
||||
def __str__(self):
|
||||
return text_type(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return int(self.value) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return int(self.value) < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFQWordAttribute(ASFBaseAttribute):
|
||||
"""QWORD attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFQWordAttribute(42)
|
||||
"""
|
||||
|
||||
TYPE = 0x0004
|
||||
|
||||
def parse(self, data):
|
||||
return struct.unpack("<Q", data)[0]
|
||||
|
||||
def _render(self):
|
||||
return struct.pack("<Q", self.value)
|
||||
|
||||
def _validate(self, value):
|
||||
value = int(value)
|
||||
if not 0 <= value <= 2 ** 64 - 1:
|
||||
raise ValueError("Out of range")
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
return 8
|
||||
|
||||
def __int__(self):
|
||||
return self.value
|
||||
|
||||
def __bytes__(self):
|
||||
return text_type(self.value).encode('utf-8')
|
||||
|
||||
def __str__(self):
|
||||
return text_type(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return int(self.value) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return int(self.value) < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFWordAttribute(ASFBaseAttribute):
|
||||
"""WORD attribute.
|
||||
|
||||
::
|
||||
|
||||
ASFWordAttribute(42)
|
||||
"""
|
||||
|
||||
TYPE = 0x0005
|
||||
|
||||
def parse(self, data):
|
||||
return struct.unpack("<H", data)[0]
|
||||
|
||||
def _render(self):
|
||||
return struct.pack("<H", self.value)
|
||||
|
||||
def _validate(self, value):
|
||||
value = int(value)
|
||||
if not 0 <= value <= 2 ** 16 - 1:
|
||||
raise ValueError("Out of range")
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
return 2
|
||||
|
||||
def __int__(self):
|
||||
return self.value
|
||||
|
||||
def __bytes__(self):
|
||||
return text_type(self.value).encode('utf-8')
|
||||
|
||||
def __str__(self):
|
||||
return text_type(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return int(self.value) == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return int(self.value) < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
@ASFBaseAttribute._register
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ASFGUIDAttribute(ASFBaseAttribute):
|
||||
"""GUID attribute."""
|
||||
|
||||
TYPE = 0x0006
|
||||
|
||||
def parse(self, data):
|
||||
assert isinstance(data, bytes)
|
||||
return data
|
||||
|
||||
def _render(self):
|
||||
assert isinstance(self.value, bytes)
|
||||
return self.value
|
||||
|
||||
def _validate(self, value):
|
||||
if not isinstance(value, bytes):
|
||||
raise TypeError("must be bytes/str: %r" % value)
|
||||
return value
|
||||
|
||||
def data_size(self):
|
||||
return len(self.value)
|
||||
|
||||
def __bytes__(self):
|
||||
return self.value
|
||||
|
||||
def __str__(self):
|
||||
return repr(self.value)
|
||||
|
||||
def __eq__(self, other):
|
||||
return self.value == other
|
||||
|
||||
def __lt__(self, other):
|
||||
return self.value < other
|
||||
|
||||
__hash__ = ASFBaseAttribute.__hash__
|
||||
|
||||
|
||||
def ASFValue(value, kind, **kwargs):
|
||||
"""Create a tag value of a specific kind.
|
||||
|
||||
::
|
||||
|
||||
ASFValue(u"My Value", UNICODE)
|
||||
|
||||
:rtype: ASFBaseAttribute
|
||||
:raises TypeError: in case a wrong type was passed
|
||||
:raises ValueError: in case the value can't be be represented as ASFValue.
|
||||
"""
|
||||
|
||||
try:
|
||||
attr_type = ASFBaseAttribute._get_type(kind)
|
||||
except KeyError:
|
||||
raise ValueError("Unknown value type %r" % kind)
|
||||
else:
|
||||
return attr_type(value=value, **kwargs)
|
||||
|
|
@ -1,437 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2005-2006 Joe Wreschnig
|
||||
# Copyright (C) 2006-2007 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen._util import cdata, get_size
|
||||
from mutagen._compat import text_type, xrange, izip
|
||||
from mutagen._tags import PaddingInfo
|
||||
|
||||
from ._util import guid2bytes, bytes2guid, CODECS, ASFError, ASFHeaderError
|
||||
from ._attrs import ASFBaseAttribute, ASFUnicodeAttribute
|
||||
|
||||
|
||||
class BaseObject(object):
|
||||
"""Base ASF object."""
|
||||
|
||||
GUID = None
|
||||
_TYPES = {}
|
||||
|
||||
def __init__(self):
|
||||
self.objects = []
|
||||
self.data = b""
|
||||
|
||||
def parse(self, asf, data):
|
||||
self.data = data
|
||||
|
||||
def render(self, asf):
|
||||
data = self.GUID + struct.pack("<Q", len(self.data) + 24) + self.data
|
||||
return data
|
||||
|
||||
def get_child(self, guid):
|
||||
for obj in self.objects:
|
||||
if obj.GUID == guid:
|
||||
return obj
|
||||
return None
|
||||
|
||||
@classmethod
|
||||
def _register(cls, other):
|
||||
cls._TYPES[other.GUID] = other
|
||||
return other
|
||||
|
||||
@classmethod
|
||||
def _get_object(cls, guid):
|
||||
if guid in cls._TYPES:
|
||||
return cls._TYPES[guid]()
|
||||
else:
|
||||
return UnknownObject(guid)
|
||||
|
||||
def __repr__(self):
|
||||
return "<%s GUID=%s objects=%r>" % (
|
||||
type(self).__name__, bytes2guid(self.GUID), self.objects)
|
||||
|
||||
def pprint(self):
|
||||
l = []
|
||||
l.append("%s(%s)" % (type(self).__name__, bytes2guid(self.GUID)))
|
||||
for o in self.objects:
|
||||
for e in o.pprint().splitlines():
|
||||
l.append(" " + e)
|
||||
return "\n".join(l)
|
||||
|
||||
|
||||
class UnknownObject(BaseObject):
|
||||
"""Unknown ASF object."""
|
||||
|
||||
def __init__(self, guid):
|
||||
super(UnknownObject, self).__init__()
|
||||
assert isinstance(guid, bytes)
|
||||
self.GUID = guid
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class HeaderObject(BaseObject):
|
||||
"""ASF header."""
|
||||
|
||||
GUID = guid2bytes("75B22630-668E-11CF-A6D9-00AA0062CE6C")
|
||||
|
||||
@classmethod
|
||||
def parse_full(cls, asf, fileobj):
|
||||
"""Raises ASFHeaderError"""
|
||||
|
||||
header = cls()
|
||||
|
||||
size, num_objects = cls.parse_size(fileobj)
|
||||
for i in xrange(num_objects):
|
||||
guid, size = struct.unpack("<16sQ", fileobj.read(24))
|
||||
obj = BaseObject._get_object(guid)
|
||||
data = fileobj.read(size - 24)
|
||||
obj.parse(asf, data)
|
||||
header.objects.append(obj)
|
||||
|
||||
return header
|
||||
|
||||
@classmethod
|
||||
def parse_size(cls, fileobj):
|
||||
"""Returns (size, num_objects)
|
||||
|
||||
Raises ASFHeaderError
|
||||
"""
|
||||
|
||||
header = fileobj.read(30)
|
||||
if len(header) != 30 or header[:16] != HeaderObject.GUID:
|
||||
raise ASFHeaderError("Not an ASF file.")
|
||||
|
||||
return struct.unpack("<QL", header[16:28])
|
||||
|
||||
def render_full(self, asf, fileobj, available, padding_func):
|
||||
# Render everything except padding
|
||||
num_objects = 0
|
||||
data = bytearray()
|
||||
for obj in self.objects:
|
||||
if obj.GUID == PaddingObject.GUID:
|
||||
continue
|
||||
data += obj.render(asf)
|
||||
num_objects += 1
|
||||
|
||||
# calculate how much space we need at least
|
||||
padding_obj = PaddingObject()
|
||||
header_size = len(HeaderObject.GUID) + 14
|
||||
padding_overhead = len(padding_obj.render(asf))
|
||||
needed_size = len(data) + header_size + padding_overhead
|
||||
|
||||
# ask the user for padding adjustments
|
||||
file_size = get_size(fileobj)
|
||||
content_size = file_size - available
|
||||
assert content_size >= 0
|
||||
info = PaddingInfo(available - needed_size, content_size)
|
||||
|
||||
# add padding
|
||||
padding = info._get_padding(padding_func)
|
||||
padding_obj.parse(asf, b"\x00" * padding)
|
||||
data += padding_obj.render(asf)
|
||||
num_objects += 1
|
||||
|
||||
data = (HeaderObject.GUID +
|
||||
struct.pack("<QL", len(data) + 30, num_objects) +
|
||||
b"\x01\x02" + data)
|
||||
|
||||
return data
|
||||
|
||||
def parse(self, asf, data):
|
||||
raise NotImplementedError
|
||||
|
||||
def render(self, asf):
|
||||
raise NotImplementedError
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class ContentDescriptionObject(BaseObject):
|
||||
"""Content description."""
|
||||
|
||||
GUID = guid2bytes("75B22633-668E-11CF-A6D9-00AA0062CE6C")
|
||||
|
||||
NAMES = [
|
||||
u"Title",
|
||||
u"Author",
|
||||
u"Copyright",
|
||||
u"Description",
|
||||
u"Rating",
|
||||
]
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(ContentDescriptionObject, self).parse(asf, data)
|
||||
lengths = struct.unpack("<HHHHH", data[:10])
|
||||
texts = []
|
||||
pos = 10
|
||||
for length in lengths:
|
||||
end = pos + length
|
||||
if length > 0:
|
||||
texts.append(data[pos:end].decode("utf-16-le").strip(u"\x00"))
|
||||
else:
|
||||
texts.append(None)
|
||||
pos = end
|
||||
|
||||
for key, value in izip(self.NAMES, texts):
|
||||
if value is not None:
|
||||
value = ASFUnicodeAttribute(value=value)
|
||||
asf._tags.setdefault(self.GUID, []).append((key, value))
|
||||
|
||||
def render(self, asf):
|
||||
def render_text(name):
|
||||
value = asf.to_content_description.get(name)
|
||||
if value is not None:
|
||||
return text_type(value).encode("utf-16-le") + b"\x00\x00"
|
||||
else:
|
||||
return b""
|
||||
|
||||
texts = [render_text(x) for x in self.NAMES]
|
||||
data = struct.pack("<HHHHH", *map(len, texts)) + b"".join(texts)
|
||||
return self.GUID + struct.pack("<Q", 24 + len(data)) + data
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class ExtendedContentDescriptionObject(BaseObject):
|
||||
"""Extended content description."""
|
||||
|
||||
GUID = guid2bytes("D2D0A440-E307-11D2-97F0-00A0C95EA850")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(ExtendedContentDescriptionObject, self).parse(asf, data)
|
||||
num_attributes, = struct.unpack("<H", data[0:2])
|
||||
pos = 2
|
||||
for i in xrange(num_attributes):
|
||||
name_length, = struct.unpack("<H", data[pos:pos + 2])
|
||||
pos += 2
|
||||
name = data[pos:pos + name_length]
|
||||
name = name.decode("utf-16-le").strip("\x00")
|
||||
pos += name_length
|
||||
value_type, value_length = struct.unpack("<HH", data[pos:pos + 4])
|
||||
pos += 4
|
||||
value = data[pos:pos + value_length]
|
||||
pos += value_length
|
||||
attr = ASFBaseAttribute._get_type(value_type)(data=value)
|
||||
asf._tags.setdefault(self.GUID, []).append((name, attr))
|
||||
|
||||
def render(self, asf):
|
||||
attrs = asf.to_extended_content_description.items()
|
||||
data = b"".join(attr.render(name) for (name, attr) in attrs)
|
||||
data = struct.pack("<QH", 26 + len(data), len(attrs)) + data
|
||||
return self.GUID + data
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class FilePropertiesObject(BaseObject):
|
||||
"""File properties."""
|
||||
|
||||
GUID = guid2bytes("8CABDCA1-A947-11CF-8EE4-00C00C205365")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(FilePropertiesObject, self).parse(asf, data)
|
||||
length, _, preroll = struct.unpack("<QQQ", data[40:64])
|
||||
# there are files where preroll is larger than length, limit to >= 0
|
||||
asf.info.length = max((length / 10000000.0) - (preroll / 1000.0), 0.0)
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class StreamPropertiesObject(BaseObject):
|
||||
"""Stream properties."""
|
||||
|
||||
GUID = guid2bytes("B7DC0791-A9B7-11CF-8EE6-00C00C205365")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(StreamPropertiesObject, self).parse(asf, data)
|
||||
channels, sample_rate, bitrate = struct.unpack("<HII", data[56:66])
|
||||
asf.info.channels = channels
|
||||
asf.info.sample_rate = sample_rate
|
||||
asf.info.bitrate = bitrate * 8
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class CodecListObject(BaseObject):
|
||||
"""Codec List"""
|
||||
|
||||
GUID = guid2bytes("86D15240-311D-11D0-A3A4-00A0C90348F6")
|
||||
|
||||
def _parse_entry(self, data, offset):
|
||||
"""can raise cdata.error"""
|
||||
|
||||
type_, offset = cdata.uint16_le_from(data, offset)
|
||||
|
||||
units, offset = cdata.uint16_le_from(data, offset)
|
||||
# utf-16 code units, not characters..
|
||||
next_offset = offset + units * 2
|
||||
try:
|
||||
name = data[offset:next_offset].decode("utf-16-le").strip("\x00")
|
||||
except UnicodeDecodeError:
|
||||
name = u""
|
||||
offset = next_offset
|
||||
|
||||
units, offset = cdata.uint16_le_from(data, offset)
|
||||
next_offset = offset + units * 2
|
||||
try:
|
||||
desc = data[offset:next_offset].decode("utf-16-le").strip("\x00")
|
||||
except UnicodeDecodeError:
|
||||
desc = u""
|
||||
offset = next_offset
|
||||
|
||||
bytes_, offset = cdata.uint16_le_from(data, offset)
|
||||
next_offset = offset + bytes_
|
||||
codec = u""
|
||||
if bytes_ == 2:
|
||||
codec_id = cdata.uint16_le_from(data, offset)[0]
|
||||
if codec_id in CODECS:
|
||||
codec = CODECS[codec_id]
|
||||
offset = next_offset
|
||||
|
||||
return offset, type_, name, desc, codec
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(CodecListObject, self).parse(asf, data)
|
||||
|
||||
offset = 16
|
||||
count, offset = cdata.uint32_le_from(data, offset)
|
||||
for i in xrange(count):
|
||||
try:
|
||||
offset, type_, name, desc, codec = \
|
||||
self._parse_entry(data, offset)
|
||||
except cdata.error:
|
||||
raise ASFError("invalid codec entry")
|
||||
|
||||
# go with the first audio entry
|
||||
if type_ == 2:
|
||||
name = name.strip()
|
||||
desc = desc.strip()
|
||||
asf.info.codec_type = codec
|
||||
asf.info.codec_name = name
|
||||
asf.info.codec_description = desc
|
||||
return
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class PaddingObject(BaseObject):
|
||||
"""Padding object"""
|
||||
|
||||
GUID = guid2bytes("1806D474-CADF-4509-A4BA-9AABCB96AAE8")
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class StreamBitratePropertiesObject(BaseObject):
|
||||
"""Stream bitrate properties"""
|
||||
|
||||
GUID = guid2bytes("7BF875CE-468D-11D1-8D82-006097C9A2B2")
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class ContentEncryptionObject(BaseObject):
|
||||
"""Content encryption"""
|
||||
|
||||
GUID = guid2bytes("2211B3FB-BD23-11D2-B4B7-00A0C955FC6E")
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class ExtendedContentEncryptionObject(BaseObject):
|
||||
"""Extended content encryption"""
|
||||
|
||||
GUID = guid2bytes("298AE614-2622-4C17-B935-DAE07EE9289C")
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class HeaderExtensionObject(BaseObject):
|
||||
"""Header extension."""
|
||||
|
||||
GUID = guid2bytes("5FBF03B5-A92E-11CF-8EE3-00C00C205365")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(HeaderExtensionObject, self).parse(asf, data)
|
||||
datasize, = struct.unpack("<I", data[18:22])
|
||||
datapos = 0
|
||||
while datapos < datasize:
|
||||
guid, size = struct.unpack(
|
||||
"<16sQ", data[22 + datapos:22 + datapos + 24])
|
||||
obj = BaseObject._get_object(guid)
|
||||
obj.parse(asf, data[22 + datapos + 24:22 + datapos + size])
|
||||
self.objects.append(obj)
|
||||
datapos += size
|
||||
|
||||
def render(self, asf):
|
||||
data = bytearray()
|
||||
for obj in self.objects:
|
||||
# some files have the padding in the extension header, but we
|
||||
# want to add it at the end of the top level header. Just
|
||||
# skip padding at this level.
|
||||
if obj.GUID == PaddingObject.GUID:
|
||||
continue
|
||||
data += obj.render(asf)
|
||||
return (self.GUID + struct.pack("<Q", 24 + 16 + 6 + len(data)) +
|
||||
b"\x11\xD2\xD3\xAB\xBA\xA9\xcf\x11" +
|
||||
b"\x8E\xE6\x00\xC0\x0C\x20\x53\x65" +
|
||||
b"\x06\x00" + struct.pack("<I", len(data)) + data)
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class MetadataObject(BaseObject):
|
||||
"""Metadata description."""
|
||||
|
||||
GUID = guid2bytes("C5F8CBEA-5BAF-4877-8467-AA8C44FA4CCA")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(MetadataObject, self).parse(asf, data)
|
||||
num_attributes, = struct.unpack("<H", data[0:2])
|
||||
pos = 2
|
||||
for i in xrange(num_attributes):
|
||||
(reserved, stream, name_length, value_type,
|
||||
value_length) = struct.unpack("<HHHHI", data[pos:pos + 12])
|
||||
pos += 12
|
||||
name = data[pos:pos + name_length]
|
||||
name = name.decode("utf-16-le").strip("\x00")
|
||||
pos += name_length
|
||||
value = data[pos:pos + value_length]
|
||||
pos += value_length
|
||||
args = {'data': value, 'stream': stream}
|
||||
if value_type == 2:
|
||||
args['dword'] = False
|
||||
attr = ASFBaseAttribute._get_type(value_type)(**args)
|
||||
asf._tags.setdefault(self.GUID, []).append((name, attr))
|
||||
|
||||
def render(self, asf):
|
||||
attrs = asf.to_metadata.items()
|
||||
data = b"".join([attr.render_m(name) for (name, attr) in attrs])
|
||||
return (self.GUID + struct.pack("<QH", 26 + len(data), len(attrs)) +
|
||||
data)
|
||||
|
||||
|
||||
@BaseObject._register
|
||||
class MetadataLibraryObject(BaseObject):
|
||||
"""Metadata library description."""
|
||||
|
||||
GUID = guid2bytes("44231C94-9498-49D1-A141-1D134E457054")
|
||||
|
||||
def parse(self, asf, data):
|
||||
super(MetadataLibraryObject, self).parse(asf, data)
|
||||
num_attributes, = struct.unpack("<H", data[0:2])
|
||||
pos = 2
|
||||
for i in xrange(num_attributes):
|
||||
(language, stream, name_length, value_type,
|
||||
value_length) = struct.unpack("<HHHHI", data[pos:pos + 12])
|
||||
pos += 12
|
||||
name = data[pos:pos + name_length]
|
||||
name = name.decode("utf-16-le").strip("\x00")
|
||||
pos += name_length
|
||||
value = data[pos:pos + value_length]
|
||||
pos += value_length
|
||||
args = {'data': value, 'language': language, 'stream': stream}
|
||||
if value_type == 2:
|
||||
args['dword'] = False
|
||||
attr = ASFBaseAttribute._get_type(value_type)(**args)
|
||||
asf._tags.setdefault(self.GUID, []).append((name, attr))
|
||||
|
||||
def render(self, asf):
|
||||
attrs = asf.to_metadata_library
|
||||
data = b"".join([attr.render_ml(name) for (name, attr) in attrs])
|
||||
return (self.GUID + struct.pack("<QH", 26 + len(data), len(attrs)) +
|
||||
data)
|
||||
|
|
@ -1,315 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2005-2006 Joe Wreschnig
|
||||
# Copyright (C) 2006-2007 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen._util import MutagenError
|
||||
|
||||
|
||||
class error(IOError, MutagenError):
|
||||
"""Error raised by :mod:`mutagen.asf`"""
|
||||
|
||||
|
||||
class ASFError(error):
|
||||
pass
|
||||
|
||||
|
||||
class ASFHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
def guid2bytes(s):
|
||||
"""Converts a GUID to the serialized bytes representation"""
|
||||
|
||||
assert isinstance(s, str)
|
||||
assert len(s) == 36
|
||||
|
||||
p = struct.pack
|
||||
return b"".join([
|
||||
p("<IHH", int(s[:8], 16), int(s[9:13], 16), int(s[14:18], 16)),
|
||||
p(">H", int(s[19:23], 16)),
|
||||
p(">Q", int(s[24:], 16))[2:],
|
||||
])
|
||||
|
||||
|
||||
def bytes2guid(s):
|
||||
"""Converts a serialized GUID to a text GUID"""
|
||||
|
||||
assert isinstance(s, bytes)
|
||||
|
||||
u = struct.unpack
|
||||
v = []
|
||||
v.extend(u("<IHH", s[:8]))
|
||||
v.extend(u(">HQ", s[8:10] + b"\x00\x00" + s[10:]))
|
||||
return "%08X-%04X-%04X-%04X-%012X" % tuple(v)
|
||||
|
||||
|
||||
# Names from http://windows.microsoft.com/en-za/windows7/c00d10d1-[0-9A-F]{1,4}
|
||||
CODECS = {
|
||||
0x0000: u"Unknown Wave Format",
|
||||
0x0001: u"Microsoft PCM Format",
|
||||
0x0002: u"Microsoft ADPCM Format",
|
||||
0x0003: u"IEEE Float",
|
||||
0x0004: u"Compaq Computer VSELP",
|
||||
0x0005: u"IBM CVSD",
|
||||
0x0006: u"Microsoft CCITT A-Law",
|
||||
0x0007: u"Microsoft CCITT u-Law",
|
||||
0x0008: u"Microsoft DTS",
|
||||
0x0009: u"Microsoft DRM",
|
||||
0x000A: u"Windows Media Audio 9 Voice",
|
||||
0x000B: u"Windows Media Audio 10 Voice",
|
||||
0x000C: u"OGG Vorbis",
|
||||
0x000D: u"FLAC",
|
||||
0x000E: u"MOT AMR",
|
||||
0x000F: u"Nice Systems IMBE",
|
||||
0x0010: u"OKI ADPCM",
|
||||
0x0011: u"Intel IMA ADPCM",
|
||||
0x0012: u"Videologic MediaSpace ADPCM",
|
||||
0x0013: u"Sierra Semiconductor ADPCM",
|
||||
0x0014: u"Antex Electronics G.723 ADPCM",
|
||||
0x0015: u"DSP Solutions DIGISTD",
|
||||
0x0016: u"DSP Solutions DIGIFIX",
|
||||
0x0017: u"Dialogic OKI ADPCM",
|
||||
0x0018: u"MediaVision ADPCM",
|
||||
0x0019: u"Hewlett-Packard CU codec",
|
||||
0x001A: u"Hewlett-Packard Dynamic Voice",
|
||||
0x0020: u"Yamaha ADPCM",
|
||||
0x0021: u"Speech Compression SONARC",
|
||||
0x0022: u"DSP Group True Speech",
|
||||
0x0023: u"Echo Speech EchoSC1",
|
||||
0x0024: u"Ahead Inc. Audiofile AF36",
|
||||
0x0025: u"Audio Processing Technology APTX",
|
||||
0x0026: u"Ahead Inc. AudioFile AF10",
|
||||
0x0027: u"Aculab Prosody 1612",
|
||||
0x0028: u"Merging Technologies S.A. LRC",
|
||||
0x0030: u"Dolby Labs AC2",
|
||||
0x0031: u"Microsoft GSM 6.10",
|
||||
0x0032: u"Microsoft MSNAudio",
|
||||
0x0033: u"Antex Electronics ADPCME",
|
||||
0x0034: u"Control Resources VQLPC",
|
||||
0x0035: u"DSP Solutions Digireal",
|
||||
0x0036: u"DSP Solutions DigiADPCM",
|
||||
0x0037: u"Control Resources CR10",
|
||||
0x0038: u"Natural MicroSystems VBXADPCM",
|
||||
0x0039: u"Crystal Semiconductor IMA ADPCM",
|
||||
0x003A: u"Echo Speech EchoSC3",
|
||||
0x003B: u"Rockwell ADPCM",
|
||||
0x003C: u"Rockwell DigiTalk",
|
||||
0x003D: u"Xebec Multimedia Solutions",
|
||||
0x0040: u"Antex Electronics G.721 ADPCM",
|
||||
0x0041: u"Antex Electronics G.728 CELP",
|
||||
0x0042: u"Intel G.723",
|
||||
0x0043: u"Intel G.723.1",
|
||||
0x0044: u"Intel G.729 Audio",
|
||||
0x0045: u"Sharp G.726 Audio",
|
||||
0x0050: u"Microsoft MPEG-1",
|
||||
0x0052: u"InSoft RT24",
|
||||
0x0053: u"InSoft PAC",
|
||||
0x0055: u"MP3 - MPEG Layer III",
|
||||
0x0059: u"Lucent G.723",
|
||||
0x0060: u"Cirrus Logic",
|
||||
0x0061: u"ESS Technology ESPCM",
|
||||
0x0062: u"Voxware File-Mode",
|
||||
0x0063: u"Canopus Atrac",
|
||||
0x0064: u"APICOM G.726 ADPCM",
|
||||
0x0065: u"APICOM G.722 ADPCM",
|
||||
0x0066: u"Microsoft DSAT",
|
||||
0x0067: u"Microsoft DSAT Display",
|
||||
0x0069: u"Voxware Byte Aligned",
|
||||
0x0070: u"Voxware AC8",
|
||||
0x0071: u"Voxware AC10",
|
||||
0x0072: u"Voxware AC16",
|
||||
0x0073: u"Voxware AC20",
|
||||
0x0074: u"Voxware RT24 MetaVoice",
|
||||
0x0075: u"Voxware RT29 MetaSound",
|
||||
0x0076: u"Voxware RT29HW",
|
||||
0x0077: u"Voxware VR12",
|
||||
0x0078: u"Voxware VR18",
|
||||
0x0079: u"Voxware TQ40",
|
||||
0x007A: u"Voxware SC3",
|
||||
0x007B: u"Voxware SC3",
|
||||
0x0080: u"Softsound",
|
||||
0x0081: u"Voxware TQ60",
|
||||
0x0082: u"Microsoft MSRT24",
|
||||
0x0083: u"AT&T Labs G.729A",
|
||||
0x0084: u"Motion Pixels MVI MV12",
|
||||
0x0085: u"DataFusion Systems G.726",
|
||||
0x0086: u"DataFusion Systems GSM610",
|
||||
0x0088: u"Iterated Systems ISIAudio",
|
||||
0x0089: u"Onlive",
|
||||
0x008A: u"Multitude FT SX20",
|
||||
0x008B: u"Infocom ITS ACM G.721",
|
||||
0x008C: u"Convedia G.729",
|
||||
0x008D: u"Congruency Audio",
|
||||
0x0091: u"Siemens Business Communications SBC24",
|
||||
0x0092: u"Sonic Foundry Dolby AC3 SPDIF",
|
||||
0x0093: u"MediaSonic G.723",
|
||||
0x0094: u"Aculab Prosody 8KBPS",
|
||||
0x0097: u"ZyXEL ADPCM",
|
||||
0x0098: u"Philips LPCBB",
|
||||
0x0099: u"Studer Professional Audio AG Packed",
|
||||
0x00A0: u"Malden Electronics PHONYTALK",
|
||||
0x00A1: u"Racal Recorder GSM",
|
||||
0x00A2: u"Racal Recorder G720.a",
|
||||
0x00A3: u"Racal Recorder G723.1",
|
||||
0x00A4: u"Racal Recorder Tetra ACELP",
|
||||
0x00B0: u"NEC AAC",
|
||||
0x00FF: u"CoreAAC Audio",
|
||||
0x0100: u"Rhetorex ADPCM",
|
||||
0x0101: u"BeCubed Software IRAT",
|
||||
0x0111: u"Vivo G.723",
|
||||
0x0112: u"Vivo Siren",
|
||||
0x0120: u"Philips CELP",
|
||||
0x0121: u"Philips Grundig",
|
||||
0x0123: u"Digital G.723",
|
||||
0x0125: u"Sanyo ADPCM",
|
||||
0x0130: u"Sipro Lab Telecom ACELP.net",
|
||||
0x0131: u"Sipro Lab Telecom ACELP.4800",
|
||||
0x0132: u"Sipro Lab Telecom ACELP.8V3",
|
||||
0x0133: u"Sipro Lab Telecom ACELP.G.729",
|
||||
0x0134: u"Sipro Lab Telecom ACELP.G.729A",
|
||||
0x0135: u"Sipro Lab Telecom ACELP.KELVIN",
|
||||
0x0136: u"VoiceAge AMR",
|
||||
0x0140: u"Dictaphone G.726 ADPCM",
|
||||
0x0141: u"Dictaphone CELP68",
|
||||
0x0142: u"Dictaphone CELP54",
|
||||
0x0150: u"Qualcomm PUREVOICE",
|
||||
0x0151: u"Qualcomm HALFRATE",
|
||||
0x0155: u"Ring Zero Systems TUBGSM",
|
||||
0x0160: u"Windows Media Audio Standard",
|
||||
0x0161: u"Windows Media Audio 9 Standard",
|
||||
0x0162: u"Windows Media Audio 9 Professional",
|
||||
0x0163: u"Windows Media Audio 9 Lossless",
|
||||
0x0164: u"Windows Media Audio Pro over SPDIF",
|
||||
0x0170: u"Unisys NAP ADPCM",
|
||||
0x0171: u"Unisys NAP ULAW",
|
||||
0x0172: u"Unisys NAP ALAW",
|
||||
0x0173: u"Unisys NAP 16K",
|
||||
0x0174: u"Sycom ACM SYC008",
|
||||
0x0175: u"Sycom ACM SYC701 G725",
|
||||
0x0176: u"Sycom ACM SYC701 CELP54",
|
||||
0x0177: u"Sycom ACM SYC701 CELP68",
|
||||
0x0178: u"Knowledge Adventure ADPCM",
|
||||
0x0180: u"Fraunhofer IIS MPEG-2 AAC",
|
||||
0x0190: u"Digital Theater Systems DTS",
|
||||
0x0200: u"Creative Labs ADPCM",
|
||||
0x0202: u"Creative Labs FastSpeech8",
|
||||
0x0203: u"Creative Labs FastSpeech10",
|
||||
0x0210: u"UHER informatic GmbH ADPCM",
|
||||
0x0215: u"Ulead DV Audio",
|
||||
0x0216: u"Ulead DV Audio",
|
||||
0x0220: u"Quarterdeck",
|
||||
0x0230: u"I-link Worldwide ILINK VC",
|
||||
0x0240: u"Aureal Semiconductor RAW SPORT",
|
||||
0x0249: u"Generic Passthru",
|
||||
0x0250: u"Interactive Products HSX",
|
||||
0x0251: u"Interactive Products RPELP",
|
||||
0x0260: u"Consistent Software CS2",
|
||||
0x0270: u"Sony SCX",
|
||||
0x0271: u"Sony SCY",
|
||||
0x0272: u"Sony ATRAC3",
|
||||
0x0273: u"Sony SPC",
|
||||
0x0280: u"Telum Audio",
|
||||
0x0281: u"Telum IA Audio",
|
||||
0x0285: u"Norcom Voice Systems ADPCM",
|
||||
0x0300: u"Fujitsu TOWNS SND",
|
||||
0x0350: u"Micronas SC4 Speech",
|
||||
0x0351: u"Micronas CELP833",
|
||||
0x0400: u"Brooktree BTV Digital",
|
||||
0x0401: u"Intel Music Coder",
|
||||
0x0402: u"Intel Audio",
|
||||
0x0450: u"QDesign Music",
|
||||
0x0500: u"On2 AVC0 Audio",
|
||||
0x0501: u"On2 AVC1 Audio",
|
||||
0x0680: u"AT&T Labs VME VMPCM",
|
||||
0x0681: u"AT&T Labs TPC",
|
||||
0x08AE: u"ClearJump Lightwave Lossless",
|
||||
0x1000: u"Olivetti GSM",
|
||||
0x1001: u"Olivetti ADPCM",
|
||||
0x1002: u"Olivetti CELP",
|
||||
0x1003: u"Olivetti SBC",
|
||||
0x1004: u"Olivetti OPR",
|
||||
0x1100: u"Lernout & Hauspie",
|
||||
0x1101: u"Lernout & Hauspie CELP",
|
||||
0x1102: u"Lernout & Hauspie SBC8",
|
||||
0x1103: u"Lernout & Hauspie SBC12",
|
||||
0x1104: u"Lernout & Hauspie SBC16",
|
||||
0x1400: u"Norris Communication",
|
||||
0x1401: u"ISIAudio",
|
||||
0x1500: u"AT&T Labs Soundspace Music Compression",
|
||||
0x1600: u"Microsoft MPEG ADTS AAC",
|
||||
0x1601: u"Microsoft MPEG RAW AAC",
|
||||
0x1608: u"Nokia MPEG ADTS AAC",
|
||||
0x1609: u"Nokia MPEG RAW AAC",
|
||||
0x181C: u"VoxWare MetaVoice RT24",
|
||||
0x1971: u"Sonic Foundry Lossless",
|
||||
0x1979: u"Innings Telecom ADPCM",
|
||||
0x1FC4: u"NTCSoft ALF2CD ACM",
|
||||
0x2000: u"Dolby AC3",
|
||||
0x2001: u"DTS",
|
||||
0x4143: u"Divio AAC",
|
||||
0x4201: u"Nokia Adaptive Multi-Rate",
|
||||
0x4243: u"Divio G.726",
|
||||
0x4261: u"ITU-T H.261",
|
||||
0x4263: u"ITU-T H.263",
|
||||
0x4264: u"ITU-T H.264",
|
||||
0x674F: u"Ogg Vorbis Mode 1",
|
||||
0x6750: u"Ogg Vorbis Mode 2",
|
||||
0x6751: u"Ogg Vorbis Mode 3",
|
||||
0x676F: u"Ogg Vorbis Mode 1+",
|
||||
0x6770: u"Ogg Vorbis Mode 2+",
|
||||
0x6771: u"Ogg Vorbis Mode 3+",
|
||||
0x7000: u"3COM NBX Audio",
|
||||
0x706D: u"FAAD AAC Audio",
|
||||
0x77A1: u"True Audio Lossless Audio",
|
||||
0x7A21: u"GSM-AMR CBR 3GPP Audio",
|
||||
0x7A22: u"GSM-AMR VBR 3GPP Audio",
|
||||
0xA100: u"Comverse Infosys G723.1",
|
||||
0xA101: u"Comverse Infosys AVQSBC",
|
||||
0xA102: u"Comverse Infosys SBC",
|
||||
0xA103: u"Symbol Technologies G729a",
|
||||
0xA104: u"VoiceAge AMR WB",
|
||||
0xA105: u"Ingenient Technologies G.726",
|
||||
0xA106: u"ISO/MPEG-4 Advanced Audio Coding (AAC)",
|
||||
0xA107: u"Encore Software Ltd's G.726",
|
||||
0xA108: u"ZOLL Medical Corporation ASAO",
|
||||
0xA109: u"Speex Voice",
|
||||
0xA10A: u"Vianix MASC Speech Compression",
|
||||
0xA10B: u"Windows Media 9 Spectrum Analyzer Output",
|
||||
0xA10C: u"Media Foundation Spectrum Analyzer Output",
|
||||
0xA10D: u"GSM 6.10 (Full-Rate) Speech",
|
||||
0xA10E: u"GSM 6.20 (Half-Rate) Speech",
|
||||
0xA10F: u"GSM 6.60 (Enchanced Full-Rate) Speech",
|
||||
0xA110: u"GSM 6.90 (Adaptive Multi-Rate) Speech",
|
||||
0xA111: u"GSM Adaptive Multi-Rate WideBand Speech",
|
||||
0xA112: u"Polycom G.722",
|
||||
0xA113: u"Polycom G.728",
|
||||
0xA114: u"Polycom G.729a",
|
||||
0xA115: u"Polycom Siren",
|
||||
0xA116: u"Global IP Sound ILBC",
|
||||
0xA117: u"Radio Time Time Shifted Radio",
|
||||
0xA118: u"Nice Systems ACA",
|
||||
0xA119: u"Nice Systems ADPCM",
|
||||
0xA11A: u"Vocord Group ITU-T G.721",
|
||||
0xA11B: u"Vocord Group ITU-T G.726",
|
||||
0xA11C: u"Vocord Group ITU-T G.722.1",
|
||||
0xA11D: u"Vocord Group ITU-T G.728",
|
||||
0xA11E: u"Vocord Group ITU-T G.729",
|
||||
0xA11F: u"Vocord Group ITU-T G.729a",
|
||||
0xA120: u"Vocord Group ITU-T G.723.1",
|
||||
0xA121: u"Vocord Group LBC",
|
||||
0xA122: u"Nice G.728",
|
||||
0xA123: u"France Telecom G.729 ACM Audio",
|
||||
0xA124: u"CODIAN Audio",
|
||||
0xCC12: u"Intel YUV12 Codec",
|
||||
0xCFCC: u"Digital Processing Systems Perception Motion JPEG",
|
||||
0xD261: u"DEC H.261",
|
||||
0xD263: u"DEC H.263",
|
||||
0xFFFE: u"Extensible Wave Format",
|
||||
0xFFFF: u"Unregistered",
|
||||
}
|
||||
|
|
@ -1,534 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Easier access to ID3 tags.
|
||||
|
||||
EasyID3 is a wrapper around mutagen.id3.ID3 to make ID3 tags appear
|
||||
more like Vorbis or APEv2 tags.
|
||||
"""
|
||||
|
||||
import mutagen.id3
|
||||
|
||||
from ._compat import iteritems, text_type, PY2
|
||||
from mutagen import Metadata
|
||||
from mutagen._util import DictMixin, dict_match
|
||||
from mutagen.id3 import ID3, error, delete, ID3FileType
|
||||
|
||||
|
||||
__all__ = ['EasyID3', 'Open', 'delete']
|
||||
|
||||
|
||||
class EasyID3KeyError(KeyError, ValueError, error):
|
||||
"""Raised when trying to get/set an invalid key.
|
||||
|
||||
Subclasses both KeyError and ValueError for API compatibility,
|
||||
catching KeyError is preferred.
|
||||
"""
|
||||
|
||||
|
||||
class EasyID3(DictMixin, Metadata):
|
||||
"""A file with an ID3 tag.
|
||||
|
||||
Like Vorbis comments, EasyID3 keys are case-insensitive ASCII
|
||||
strings. Only a subset of ID3 frames are supported by default. Use
|
||||
EasyID3.RegisterKey and its wrappers to support more.
|
||||
|
||||
You can also set the GetFallback, SetFallback, and DeleteFallback
|
||||
to generic key getter/setter/deleter functions, which are called
|
||||
if no specific handler is registered for a key. Additionally,
|
||||
ListFallback can be used to supply an arbitrary list of extra
|
||||
keys. These can be set on EasyID3 or on individual instances after
|
||||
creation.
|
||||
|
||||
To use an EasyID3 class with mutagen.mp3.MP3::
|
||||
|
||||
from mutagen.mp3 import EasyMP3 as MP3
|
||||
MP3(filename)
|
||||
|
||||
Because many of the attributes are constructed on the fly, things
|
||||
like the following will not work::
|
||||
|
||||
ezid3["performer"].append("Joe")
|
||||
|
||||
Instead, you must do::
|
||||
|
||||
values = ezid3["performer"]
|
||||
values.append("Joe")
|
||||
ezid3["performer"] = values
|
||||
|
||||
"""
|
||||
|
||||
Set = {}
|
||||
Get = {}
|
||||
Delete = {}
|
||||
List = {}
|
||||
|
||||
# For compatibility.
|
||||
valid_keys = Get
|
||||
|
||||
GetFallback = None
|
||||
SetFallback = None
|
||||
DeleteFallback = None
|
||||
ListFallback = None
|
||||
|
||||
@classmethod
|
||||
def RegisterKey(cls, key,
|
||||
getter=None, setter=None, deleter=None, lister=None):
|
||||
"""Register a new key mapping.
|
||||
|
||||
A key mapping is four functions, a getter, setter, deleter,
|
||||
and lister. The key may be either a string or a glob pattern.
|
||||
|
||||
The getter, deleted, and lister receive an ID3 instance and
|
||||
the requested key name. The setter also receives the desired
|
||||
value, which will be a list of strings.
|
||||
|
||||
The getter, setter, and deleter are used to implement __getitem__,
|
||||
__setitem__, and __delitem__.
|
||||
|
||||
The lister is used to implement keys(). It should return a
|
||||
list of keys that are actually in the ID3 instance, provided
|
||||
by its associated getter.
|
||||
"""
|
||||
key = key.lower()
|
||||
if getter is not None:
|
||||
cls.Get[key] = getter
|
||||
if setter is not None:
|
||||
cls.Set[key] = setter
|
||||
if deleter is not None:
|
||||
cls.Delete[key] = deleter
|
||||
if lister is not None:
|
||||
cls.List[key] = lister
|
||||
|
||||
@classmethod
|
||||
def RegisterTextKey(cls, key, frameid):
|
||||
"""Register a text key.
|
||||
|
||||
If the key you need to register is a simple one-to-one mapping
|
||||
of ID3 frame name to EasyID3 key, then you can use this
|
||||
function::
|
||||
|
||||
EasyID3.RegisterTextKey("title", "TIT2")
|
||||
"""
|
||||
def getter(id3, key):
|
||||
return list(id3[frameid])
|
||||
|
||||
def setter(id3, key, value):
|
||||
try:
|
||||
frame = id3[frameid]
|
||||
except KeyError:
|
||||
id3.add(mutagen.id3.Frames[frameid](encoding=3, text=value))
|
||||
else:
|
||||
frame.encoding = 3
|
||||
frame.text = value
|
||||
|
||||
def deleter(id3, key):
|
||||
del(id3[frameid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
@classmethod
|
||||
def RegisterTXXXKey(cls, key, desc):
|
||||
"""Register a user-defined text frame key.
|
||||
|
||||
Some ID3 tags are stored in TXXX frames, which allow a
|
||||
freeform 'description' which acts as a subkey,
|
||||
e.g. TXXX:BARCODE.::
|
||||
|
||||
EasyID3.RegisterTXXXKey('barcode', 'BARCODE').
|
||||
"""
|
||||
frameid = "TXXX:" + desc
|
||||
|
||||
def getter(id3, key):
|
||||
return list(id3[frameid])
|
||||
|
||||
def setter(id3, key, value):
|
||||
try:
|
||||
frame = id3[frameid]
|
||||
except KeyError:
|
||||
enc = 0
|
||||
# Store 8859-1 if we can, per MusicBrainz spec.
|
||||
for v in value:
|
||||
if v and max(v) > u'\x7f':
|
||||
enc = 3
|
||||
break
|
||||
|
||||
id3.add(mutagen.id3.TXXX(encoding=enc, text=value, desc=desc))
|
||||
else:
|
||||
frame.text = value
|
||||
|
||||
def deleter(id3, key):
|
||||
del(id3[frameid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
def __init__(self, filename=None):
|
||||
self.__id3 = ID3()
|
||||
if filename is not None:
|
||||
self.load(filename)
|
||||
|
||||
load = property(lambda s: s.__id3.load,
|
||||
lambda s, v: setattr(s.__id3, 'load', v))
|
||||
|
||||
def save(self, *args, **kwargs):
|
||||
# ignore v2_version until we support 2.3 here
|
||||
kwargs.pop("v2_version", None)
|
||||
self.__id3.save(*args, **kwargs)
|
||||
|
||||
delete = property(lambda s: s.__id3.delete,
|
||||
lambda s, v: setattr(s.__id3, 'delete', v))
|
||||
|
||||
filename = property(lambda s: s.__id3.filename,
|
||||
lambda s, fn: setattr(s.__id3, 'filename', fn))
|
||||
|
||||
size = property(lambda s: s.__id3.size,
|
||||
lambda s, fn: setattr(s.__id3, 'size', s))
|
||||
|
||||
def __getitem__(self, key):
|
||||
key = key.lower()
|
||||
func = dict_match(self.Get, key, self.GetFallback)
|
||||
if func is not None:
|
||||
return func(self.__id3, key)
|
||||
else:
|
||||
raise EasyID3KeyError("%r is not a valid key" % key)
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
key = key.lower()
|
||||
if PY2:
|
||||
if isinstance(value, basestring):
|
||||
value = [value]
|
||||
else:
|
||||
if isinstance(value, text_type):
|
||||
value = [value]
|
||||
func = dict_match(self.Set, key, self.SetFallback)
|
||||
if func is not None:
|
||||
return func(self.__id3, key, value)
|
||||
else:
|
||||
raise EasyID3KeyError("%r is not a valid key" % key)
|
||||
|
||||
def __delitem__(self, key):
|
||||
key = key.lower()
|
||||
func = dict_match(self.Delete, key, self.DeleteFallback)
|
||||
if func is not None:
|
||||
return func(self.__id3, key)
|
||||
else:
|
||||
raise EasyID3KeyError("%r is not a valid key" % key)
|
||||
|
||||
def keys(self):
|
||||
keys = []
|
||||
for key in self.Get.keys():
|
||||
if key in self.List:
|
||||
keys.extend(self.List[key](self.__id3, key))
|
||||
elif key in self:
|
||||
keys.append(key)
|
||||
if self.ListFallback is not None:
|
||||
keys.extend(self.ListFallback(self.__id3, ""))
|
||||
return keys
|
||||
|
||||
def pprint(self):
|
||||
"""Print tag key=value pairs."""
|
||||
strings = []
|
||||
for key in sorted(self.keys()):
|
||||
values = self[key]
|
||||
for value in values:
|
||||
strings.append("%s=%s" % (key, value))
|
||||
return "\n".join(strings)
|
||||
|
||||
|
||||
Open = EasyID3
|
||||
|
||||
|
||||
def genre_get(id3, key):
|
||||
return id3["TCON"].genres
|
||||
|
||||
|
||||
def genre_set(id3, key, value):
|
||||
try:
|
||||
frame = id3["TCON"]
|
||||
except KeyError:
|
||||
id3.add(mutagen.id3.TCON(encoding=3, text=value))
|
||||
else:
|
||||
frame.encoding = 3
|
||||
frame.genres = value
|
||||
|
||||
|
||||
def genre_delete(id3, key):
|
||||
del(id3["TCON"])
|
||||
|
||||
|
||||
def date_get(id3, key):
|
||||
return [stamp.text for stamp in id3["TDRC"].text]
|
||||
|
||||
|
||||
def date_set(id3, key, value):
|
||||
id3.add(mutagen.id3.TDRC(encoding=3, text=value))
|
||||
|
||||
|
||||
def date_delete(id3, key):
|
||||
del(id3["TDRC"])
|
||||
|
||||
|
||||
def original_date_get(id3, key):
|
||||
return [stamp.text for stamp in id3["TDOR"].text]
|
||||
|
||||
|
||||
def original_date_set(id3, key, value):
|
||||
id3.add(mutagen.id3.TDOR(encoding=3, text=value))
|
||||
|
||||
|
||||
def original_date_delete(id3, key):
|
||||
del(id3["TDOR"])
|
||||
|
||||
|
||||
def performer_get(id3, key):
|
||||
people = []
|
||||
wanted_role = key.split(":", 1)[1]
|
||||
try:
|
||||
mcl = id3["TMCL"]
|
||||
except KeyError:
|
||||
raise KeyError(key)
|
||||
for role, person in mcl.people:
|
||||
if role == wanted_role:
|
||||
people.append(person)
|
||||
if people:
|
||||
return people
|
||||
else:
|
||||
raise KeyError(key)
|
||||
|
||||
|
||||
def performer_set(id3, key, value):
|
||||
wanted_role = key.split(":", 1)[1]
|
||||
try:
|
||||
mcl = id3["TMCL"]
|
||||
except KeyError:
|
||||
mcl = mutagen.id3.TMCL(encoding=3, people=[])
|
||||
id3.add(mcl)
|
||||
mcl.encoding = 3
|
||||
people = [p for p in mcl.people if p[0] != wanted_role]
|
||||
for v in value:
|
||||
people.append((wanted_role, v))
|
||||
mcl.people = people
|
||||
|
||||
|
||||
def performer_delete(id3, key):
|
||||
wanted_role = key.split(":", 1)[1]
|
||||
try:
|
||||
mcl = id3["TMCL"]
|
||||
except KeyError:
|
||||
raise KeyError(key)
|
||||
people = [p for p in mcl.people if p[0] != wanted_role]
|
||||
if people == mcl.people:
|
||||
raise KeyError(key)
|
||||
elif people:
|
||||
mcl.people = people
|
||||
else:
|
||||
del(id3["TMCL"])
|
||||
|
||||
|
||||
def performer_list(id3, key):
|
||||
try:
|
||||
mcl = id3["TMCL"]
|
||||
except KeyError:
|
||||
return []
|
||||
else:
|
||||
return list(set("performer:" + p[0] for p in mcl.people))
|
||||
|
||||
|
||||
def musicbrainz_trackid_get(id3, key):
|
||||
return [id3["UFID:http://musicbrainz.org"].data.decode('ascii')]
|
||||
|
||||
|
||||
def musicbrainz_trackid_set(id3, key, value):
|
||||
if len(value) != 1:
|
||||
raise ValueError("only one track ID may be set per song")
|
||||
value = value[0].encode('ascii')
|
||||
try:
|
||||
frame = id3["UFID:http://musicbrainz.org"]
|
||||
except KeyError:
|
||||
frame = mutagen.id3.UFID(owner="http://musicbrainz.org", data=value)
|
||||
id3.add(frame)
|
||||
else:
|
||||
frame.data = value
|
||||
|
||||
|
||||
def musicbrainz_trackid_delete(id3, key):
|
||||
del(id3["UFID:http://musicbrainz.org"])
|
||||
|
||||
|
||||
def website_get(id3, key):
|
||||
urls = [frame.url for frame in id3.getall("WOAR")]
|
||||
if urls:
|
||||
return urls
|
||||
else:
|
||||
raise EasyID3KeyError(key)
|
||||
|
||||
|
||||
def website_set(id3, key, value):
|
||||
id3.delall("WOAR")
|
||||
for v in value:
|
||||
id3.add(mutagen.id3.WOAR(url=v))
|
||||
|
||||
|
||||
def website_delete(id3, key):
|
||||
id3.delall("WOAR")
|
||||
|
||||
|
||||
def gain_get(id3, key):
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
raise EasyID3KeyError(key)
|
||||
else:
|
||||
return [u"%+f dB" % frame.gain]
|
||||
|
||||
|
||||
def gain_set(id3, key, value):
|
||||
if len(value) != 1:
|
||||
raise ValueError(
|
||||
"there must be exactly one gain value, not %r.", value)
|
||||
gain = float(value[0].split()[0])
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
frame = mutagen.id3.RVA2(desc=key[11:-5], gain=0, peak=0, channel=1)
|
||||
id3.add(frame)
|
||||
frame.gain = gain
|
||||
|
||||
|
||||
def gain_delete(id3, key):
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
if frame.peak:
|
||||
frame.gain = 0.0
|
||||
else:
|
||||
del(id3["RVA2:" + key[11:-5]])
|
||||
|
||||
|
||||
def peak_get(id3, key):
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
raise EasyID3KeyError(key)
|
||||
else:
|
||||
return [u"%f" % frame.peak]
|
||||
|
||||
|
||||
def peak_set(id3, key, value):
|
||||
if len(value) != 1:
|
||||
raise ValueError(
|
||||
"there must be exactly one peak value, not %r.", value)
|
||||
peak = float(value[0])
|
||||
if peak >= 2 or peak < 0:
|
||||
raise ValueError("peak must be => 0 and < 2.")
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
frame = mutagen.id3.RVA2(desc=key[11:-5], gain=0, peak=0, channel=1)
|
||||
id3.add(frame)
|
||||
frame.peak = peak
|
||||
|
||||
|
||||
def peak_delete(id3, key):
|
||||
try:
|
||||
frame = id3["RVA2:" + key[11:-5]]
|
||||
except KeyError:
|
||||
pass
|
||||
else:
|
||||
if frame.gain:
|
||||
frame.peak = 0.0
|
||||
else:
|
||||
del(id3["RVA2:" + key[11:-5]])
|
||||
|
||||
|
||||
def peakgain_list(id3, key):
|
||||
keys = []
|
||||
for frame in id3.getall("RVA2"):
|
||||
keys.append("replaygain_%s_gain" % frame.desc)
|
||||
keys.append("replaygain_%s_peak" % frame.desc)
|
||||
return keys
|
||||
|
||||
for frameid, key in iteritems({
|
||||
"TALB": "album",
|
||||
"TBPM": "bpm",
|
||||
"TCMP": "compilation", # iTunes extension
|
||||
"TCOM": "composer",
|
||||
"TCOP": "copyright",
|
||||
"TENC": "encodedby",
|
||||
"TEXT": "lyricist",
|
||||
"TLEN": "length",
|
||||
"TMED": "media",
|
||||
"TMOO": "mood",
|
||||
"TIT2": "title",
|
||||
"TIT3": "version",
|
||||
"TPE1": "artist",
|
||||
"TPE2": "performer",
|
||||
"TPE3": "conductor",
|
||||
"TPE4": "arranger",
|
||||
"TPOS": "discnumber",
|
||||
"TPUB": "organization",
|
||||
"TRCK": "tracknumber",
|
||||
"TOLY": "author",
|
||||
"TSO2": "albumartistsort", # iTunes extension
|
||||
"TSOA": "albumsort",
|
||||
"TSOC": "composersort", # iTunes extension
|
||||
"TSOP": "artistsort",
|
||||
"TSOT": "titlesort",
|
||||
"TSRC": "isrc",
|
||||
"TSST": "discsubtitle",
|
||||
"TLAN": "language",
|
||||
}):
|
||||
EasyID3.RegisterTextKey(key, frameid)
|
||||
|
||||
EasyID3.RegisterKey("genre", genre_get, genre_set, genre_delete)
|
||||
EasyID3.RegisterKey("date", date_get, date_set, date_delete)
|
||||
EasyID3.RegisterKey("originaldate", original_date_get, original_date_set,
|
||||
original_date_delete)
|
||||
EasyID3.RegisterKey(
|
||||
"performer:*", performer_get, performer_set, performer_delete,
|
||||
performer_list)
|
||||
EasyID3.RegisterKey("musicbrainz_trackid", musicbrainz_trackid_get,
|
||||
musicbrainz_trackid_set, musicbrainz_trackid_delete)
|
||||
EasyID3.RegisterKey("website", website_get, website_set, website_delete)
|
||||
EasyID3.RegisterKey(
|
||||
"replaygain_*_gain", gain_get, gain_set, gain_delete, peakgain_list)
|
||||
EasyID3.RegisterKey("replaygain_*_peak", peak_get, peak_set, peak_delete)
|
||||
|
||||
# At various times, information for this came from
|
||||
# http://musicbrainz.org/docs/specs/metadata_tags.html
|
||||
# http://bugs.musicbrainz.org/ticket/1383
|
||||
# http://musicbrainz.org/doc/MusicBrainzTag
|
||||
for desc, key in iteritems({
|
||||
u"MusicBrainz Artist Id": "musicbrainz_artistid",
|
||||
u"MusicBrainz Album Id": "musicbrainz_albumid",
|
||||
u"MusicBrainz Album Artist Id": "musicbrainz_albumartistid",
|
||||
u"MusicBrainz TRM Id": "musicbrainz_trmid",
|
||||
u"MusicIP PUID": "musicip_puid",
|
||||
u"MusicMagic Fingerprint": "musicip_fingerprint",
|
||||
u"MusicBrainz Album Status": "musicbrainz_albumstatus",
|
||||
u"MusicBrainz Album Type": "musicbrainz_albumtype",
|
||||
u"MusicBrainz Album Release Country": "releasecountry",
|
||||
u"MusicBrainz Disc Id": "musicbrainz_discid",
|
||||
u"ASIN": "asin",
|
||||
u"ALBUMARTISTSORT": "albumartistsort",
|
||||
u"BARCODE": "barcode",
|
||||
u"CATALOGNUMBER": "catalognumber",
|
||||
u"MusicBrainz Release Track Id": "musicbrainz_releasetrackid",
|
||||
u"MusicBrainz Release Group Id": "musicbrainz_releasegroupid",
|
||||
u"MusicBrainz Work Id": "musicbrainz_workid",
|
||||
u"Acoustid Fingerprint": "acoustid_fingerprint",
|
||||
u"Acoustid Id": "acoustid_id",
|
||||
}):
|
||||
EasyID3.RegisterTXXXKey(key, desc)
|
||||
|
||||
|
||||
class EasyID3FileType(ID3FileType):
|
||||
"""Like ID3FileType, but uses EasyID3 for tags."""
|
||||
ID3 = EasyID3
|
||||
|
|
@ -1,285 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2009 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
from mutagen import Metadata
|
||||
from mutagen._util import DictMixin, dict_match
|
||||
from mutagen.mp4 import MP4, MP4Tags, error, delete
|
||||
from ._compat import PY2, text_type, PY3
|
||||
|
||||
|
||||
__all__ = ["EasyMP4Tags", "EasyMP4", "delete", "error"]
|
||||
|
||||
|
||||
class EasyMP4KeyError(error, KeyError, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class EasyMP4Tags(DictMixin, Metadata):
|
||||
"""A file with MPEG-4 iTunes metadata.
|
||||
|
||||
Like Vorbis comments, EasyMP4Tags keys are case-insensitive ASCII
|
||||
strings, and values are a list of Unicode strings (and these lists
|
||||
are always of length 0 or 1).
|
||||
|
||||
If you need access to the full MP4 metadata feature set, you should use
|
||||
MP4, not EasyMP4.
|
||||
"""
|
||||
|
||||
Set = {}
|
||||
Get = {}
|
||||
Delete = {}
|
||||
List = {}
|
||||
|
||||
def __init__(self, *args, **kwargs):
|
||||
self.__mp4 = MP4Tags(*args, **kwargs)
|
||||
self.load = self.__mp4.load
|
||||
self.save = self.__mp4.save
|
||||
self.delete = self.__mp4.delete
|
||||
self._padding = self.__mp4._padding
|
||||
|
||||
filename = property(lambda s: s.__mp4.filename,
|
||||
lambda s, fn: setattr(s.__mp4, 'filename', fn))
|
||||
|
||||
@classmethod
|
||||
def RegisterKey(cls, key,
|
||||
getter=None, setter=None, deleter=None, lister=None):
|
||||
"""Register a new key mapping.
|
||||
|
||||
A key mapping is four functions, a getter, setter, deleter,
|
||||
and lister. The key may be either a string or a glob pattern.
|
||||
|
||||
The getter, deleted, and lister receive an MP4Tags instance
|
||||
and the requested key name. The setter also receives the
|
||||
desired value, which will be a list of strings.
|
||||
|
||||
The getter, setter, and deleter are used to implement __getitem__,
|
||||
__setitem__, and __delitem__.
|
||||
|
||||
The lister is used to implement keys(). It should return a
|
||||
list of keys that are actually in the MP4 instance, provided
|
||||
by its associated getter.
|
||||
"""
|
||||
key = key.lower()
|
||||
if getter is not None:
|
||||
cls.Get[key] = getter
|
||||
if setter is not None:
|
||||
cls.Set[key] = setter
|
||||
if deleter is not None:
|
||||
cls.Delete[key] = deleter
|
||||
if lister is not None:
|
||||
cls.List[key] = lister
|
||||
|
||||
@classmethod
|
||||
def RegisterTextKey(cls, key, atomid):
|
||||
"""Register a text key.
|
||||
|
||||
If the key you need to register is a simple one-to-one mapping
|
||||
of MP4 atom name to EasyMP4Tags key, then you can use this
|
||||
function::
|
||||
|
||||
EasyMP4Tags.RegisterTextKey("artist", "\xa9ART")
|
||||
"""
|
||||
def getter(tags, key):
|
||||
return tags[atomid]
|
||||
|
||||
def setter(tags, key, value):
|
||||
tags[atomid] = value
|
||||
|
||||
def deleter(tags, key):
|
||||
del(tags[atomid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
@classmethod
|
||||
def RegisterIntKey(cls, key, atomid, min_value=0, max_value=(2 ** 16) - 1):
|
||||
"""Register a scalar integer key.
|
||||
"""
|
||||
|
||||
def getter(tags, key):
|
||||
return list(map(text_type, tags[atomid]))
|
||||
|
||||
def setter(tags, key, value):
|
||||
clamp = lambda x: int(min(max(min_value, x), max_value))
|
||||
tags[atomid] = [clamp(v) for v in map(int, value)]
|
||||
|
||||
def deleter(tags, key):
|
||||
del(tags[atomid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
@classmethod
|
||||
def RegisterIntPairKey(cls, key, atomid, min_value=0,
|
||||
max_value=(2 ** 16) - 1):
|
||||
def getter(tags, key):
|
||||
ret = []
|
||||
for (track, total) in tags[atomid]:
|
||||
if total:
|
||||
ret.append(u"%d/%d" % (track, total))
|
||||
else:
|
||||
ret.append(text_type(track))
|
||||
return ret
|
||||
|
||||
def setter(tags, key, value):
|
||||
clamp = lambda x: int(min(max(min_value, x), max_value))
|
||||
data = []
|
||||
for v in value:
|
||||
try:
|
||||
tracks, total = v.split("/")
|
||||
tracks = clamp(int(tracks))
|
||||
total = clamp(int(total))
|
||||
except (ValueError, TypeError):
|
||||
tracks = clamp(int(v))
|
||||
total = min_value
|
||||
data.append((tracks, total))
|
||||
tags[atomid] = data
|
||||
|
||||
def deleter(tags, key):
|
||||
del(tags[atomid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
@classmethod
|
||||
def RegisterFreeformKey(cls, key, name, mean="com.apple.iTunes"):
|
||||
"""Register a text key.
|
||||
|
||||
If the key you need to register is a simple one-to-one mapping
|
||||
of MP4 freeform atom (----) and name to EasyMP4Tags key, then
|
||||
you can use this function::
|
||||
|
||||
EasyMP4Tags.RegisterFreeformKey(
|
||||
"musicbrainz_artistid", "MusicBrainz Artist Id")
|
||||
"""
|
||||
atomid = "----:" + mean + ":" + name
|
||||
|
||||
def getter(tags, key):
|
||||
return [s.decode("utf-8", "replace") for s in tags[atomid]]
|
||||
|
||||
def setter(tags, key, value):
|
||||
encoded = []
|
||||
for v in value:
|
||||
if not isinstance(v, text_type):
|
||||
if PY3:
|
||||
raise TypeError("%r not str" % v)
|
||||
v = v.decode("utf-8")
|
||||
encoded.append(v.encode("utf-8"))
|
||||
tags[atomid] = encoded
|
||||
|
||||
def deleter(tags, key):
|
||||
del(tags[atomid])
|
||||
|
||||
cls.RegisterKey(key, getter, setter, deleter)
|
||||
|
||||
def __getitem__(self, key):
|
||||
key = key.lower()
|
||||
func = dict_match(self.Get, key)
|
||||
if func is not None:
|
||||
return func(self.__mp4, key)
|
||||
else:
|
||||
raise EasyMP4KeyError("%r is not a valid key" % key)
|
||||
|
||||
def __setitem__(self, key, value):
|
||||
key = key.lower()
|
||||
|
||||
if PY2:
|
||||
if isinstance(value, basestring):
|
||||
value = [value]
|
||||
else:
|
||||
if isinstance(value, text_type):
|
||||
value = [value]
|
||||
|
||||
func = dict_match(self.Set, key)
|
||||
if func is not None:
|
||||
return func(self.__mp4, key, value)
|
||||
else:
|
||||
raise EasyMP4KeyError("%r is not a valid key" % key)
|
||||
|
||||
def __delitem__(self, key):
|
||||
key = key.lower()
|
||||
func = dict_match(self.Delete, key)
|
||||
if func is not None:
|
||||
return func(self.__mp4, key)
|
||||
else:
|
||||
raise EasyMP4KeyError("%r is not a valid key" % key)
|
||||
|
||||
def keys(self):
|
||||
keys = []
|
||||
for key in self.Get.keys():
|
||||
if key in self.List:
|
||||
keys.extend(self.List[key](self.__mp4, key))
|
||||
elif key in self:
|
||||
keys.append(key)
|
||||
return keys
|
||||
|
||||
def pprint(self):
|
||||
"""Print tag key=value pairs."""
|
||||
strings = []
|
||||
for key in sorted(self.keys()):
|
||||
values = self[key]
|
||||
for value in values:
|
||||
strings.append("%s=%s" % (key, value))
|
||||
return "\n".join(strings)
|
||||
|
||||
for atomid, key in {
|
||||
'\xa9nam': 'title',
|
||||
'\xa9alb': 'album',
|
||||
'\xa9ART': 'artist',
|
||||
'aART': 'albumartist',
|
||||
'\xa9day': 'date',
|
||||
'\xa9cmt': 'comment',
|
||||
'desc': 'description',
|
||||
'\xa9grp': 'grouping',
|
||||
'\xa9gen': 'genre',
|
||||
'cprt': 'copyright',
|
||||
'soal': 'albumsort',
|
||||
'soaa': 'albumartistsort',
|
||||
'soar': 'artistsort',
|
||||
'sonm': 'titlesort',
|
||||
'soco': 'composersort',
|
||||
}.items():
|
||||
EasyMP4Tags.RegisterTextKey(key, atomid)
|
||||
|
||||
for name, key in {
|
||||
'MusicBrainz Artist Id': 'musicbrainz_artistid',
|
||||
'MusicBrainz Track Id': 'musicbrainz_trackid',
|
||||
'MusicBrainz Album Id': 'musicbrainz_albumid',
|
||||
'MusicBrainz Album Artist Id': 'musicbrainz_albumartistid',
|
||||
'MusicIP PUID': 'musicip_puid',
|
||||
'MusicBrainz Album Status': 'musicbrainz_albumstatus',
|
||||
'MusicBrainz Album Type': 'musicbrainz_albumtype',
|
||||
'MusicBrainz Release Country': 'releasecountry',
|
||||
}.items():
|
||||
EasyMP4Tags.RegisterFreeformKey(key, name)
|
||||
|
||||
for name, key in {
|
||||
"tmpo": "bpm",
|
||||
}.items():
|
||||
EasyMP4Tags.RegisterIntKey(key, name)
|
||||
|
||||
for name, key in {
|
||||
"trkn": "tracknumber",
|
||||
"disk": "discnumber",
|
||||
}.items():
|
||||
EasyMP4Tags.RegisterIntPairKey(key, name)
|
||||
|
||||
|
||||
class EasyMP4(MP4):
|
||||
"""Like :class:`MP4 <mutagen.mp4.MP4>`,
|
||||
but uses :class:`EasyMP4Tags` for tags.
|
||||
|
||||
:ivar info: :class:`MP4Info <mutagen.mp4.MP4Info>`
|
||||
:ivar tags: :class:`EasyMP4Tags`
|
||||
"""
|
||||
|
||||
MP4Tags = EasyMP4Tags
|
||||
|
||||
Get = EasyMP4Tags.Get
|
||||
Set = EasyMP4Tags.Set
|
||||
Delete = EasyMP4Tags.Delete
|
||||
List = EasyMP4Tags.List
|
||||
RegisterTextKey = EasyMP4Tags.RegisterTextKey
|
||||
RegisterKey = EasyMP4Tags.RegisterKey
|
||||
|
|
@ -1,876 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2005 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write FLAC Vorbis comments and stream information.
|
||||
|
||||
Read more about FLAC at http://flac.sourceforge.net.
|
||||
|
||||
FLAC supports arbitrary metadata blocks. The two most interesting ones
|
||||
are the FLAC stream information block, and the Vorbis comment block;
|
||||
these are also the only ones Mutagen can currently read.
|
||||
|
||||
This module does not handle Ogg FLAC files.
|
||||
|
||||
Based off documentation available at
|
||||
http://flac.sourceforge.net/format.html
|
||||
"""
|
||||
|
||||
__all__ = ["FLAC", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
from ._vorbis import VCommentDict
|
||||
import mutagen
|
||||
|
||||
from ._compat import cBytesIO, endswith, chr_, xrange
|
||||
from mutagen._util import resize_bytes, MutagenError, get_size
|
||||
from mutagen._tags import PaddingInfo
|
||||
from mutagen.id3 import BitPaddedInt
|
||||
from functools import reduce
|
||||
|
||||
|
||||
class error(IOError, MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class FLACNoHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class FLACVorbisError(ValueError, error):
|
||||
pass
|
||||
|
||||
|
||||
def to_int_be(data):
|
||||
"""Convert an arbitrarily-long string to a long using big-endian
|
||||
byte order."""
|
||||
return reduce(lambda a, b: (a << 8) + b, bytearray(data), 0)
|
||||
|
||||
|
||||
class StrictFileObject(object):
|
||||
"""Wraps a file-like object and raises an exception if the requested
|
||||
amount of data to read isn't returned."""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
self._fileobj = fileobj
|
||||
for m in ["close", "tell", "seek", "write", "name"]:
|
||||
if hasattr(fileobj, m):
|
||||
setattr(self, m, getattr(fileobj, m))
|
||||
|
||||
def read(self, size=-1):
|
||||
data = self._fileobj.read(size)
|
||||
if size >= 0 and len(data) != size:
|
||||
raise error("file said %d bytes, read %d bytes" % (
|
||||
size, len(data)))
|
||||
return data
|
||||
|
||||
def tryread(self, *args):
|
||||
return self._fileobj.read(*args)
|
||||
|
||||
|
||||
class MetadataBlock(object):
|
||||
"""A generic block of FLAC metadata.
|
||||
|
||||
This class is extended by specific used as an ancestor for more specific
|
||||
blocks, and also as a container for data blobs of unknown blocks.
|
||||
|
||||
Attributes:
|
||||
|
||||
* data -- raw binary data for this block
|
||||
"""
|
||||
|
||||
_distrust_size = False
|
||||
"""For block types setting this, we don't trust the size field and
|
||||
use the size of the content instead."""
|
||||
|
||||
_invalid_overflow_size = -1
|
||||
"""In case the real size was bigger than what is representable by the
|
||||
24 bit size field, we save the wrong specified size here. This can
|
||||
only be set if _distrust_size is True"""
|
||||
|
||||
_MAX_SIZE = 2 ** 24 - 1
|
||||
|
||||
def __init__(self, data):
|
||||
"""Parse the given data string or file-like as a metadata block.
|
||||
The metadata header should not be included."""
|
||||
if data is not None:
|
||||
if not isinstance(data, StrictFileObject):
|
||||
if isinstance(data, bytes):
|
||||
data = cBytesIO(data)
|
||||
elif not hasattr(data, 'read'):
|
||||
raise TypeError(
|
||||
"StreamInfo requires string data or a file-like")
|
||||
data = StrictFileObject(data)
|
||||
self.load(data)
|
||||
|
||||
def load(self, data):
|
||||
self.data = data.read()
|
||||
|
||||
def write(self):
|
||||
return self.data
|
||||
|
||||
@classmethod
|
||||
def _writeblock(cls, block, is_last=False):
|
||||
"""Returns the block content + header.
|
||||
|
||||
Raises error.
|
||||
"""
|
||||
|
||||
data = bytearray()
|
||||
code = (block.code | 128) if is_last else block.code
|
||||
datum = block.write()
|
||||
size = len(datum)
|
||||
if size > cls._MAX_SIZE:
|
||||
if block._distrust_size and block._invalid_overflow_size != -1:
|
||||
# The original size of this block was (1) wrong and (2)
|
||||
# the real size doesn't allow us to save the file
|
||||
# according to the spec (too big for 24 bit uint). Instead
|
||||
# simply write back the original wrong size.. at least
|
||||
# we don't make the file more "broken" as it is.
|
||||
size = block._invalid_overflow_size
|
||||
else:
|
||||
raise error("block is too long to write")
|
||||
assert not size > cls._MAX_SIZE
|
||||
length = struct.pack(">I", size)[-3:]
|
||||
data.append(code)
|
||||
data += length
|
||||
data += datum
|
||||
return data
|
||||
|
||||
@classmethod
|
||||
def _writeblocks(cls, blocks, available, cont_size, padding_func):
|
||||
"""Render metadata block as a byte string."""
|
||||
|
||||
# write everything except padding
|
||||
data = bytearray()
|
||||
for block in blocks:
|
||||
if isinstance(block, Padding):
|
||||
continue
|
||||
data += cls._writeblock(block)
|
||||
blockssize = len(data)
|
||||
|
||||
# take the padding overhead into account. we always add one
|
||||
# to make things simple.
|
||||
padding_block = Padding()
|
||||
blockssize += len(cls._writeblock(padding_block))
|
||||
|
||||
# finally add a padding block
|
||||
info = PaddingInfo(available - blockssize, cont_size)
|
||||
padding_block.length = min(info._get_padding(padding_func),
|
||||
cls._MAX_SIZE)
|
||||
data += cls._writeblock(padding_block, is_last=True)
|
||||
|
||||
return data
|
||||
|
||||
|
||||
class StreamInfo(MetadataBlock, mutagen.StreamInfo):
|
||||
"""FLAC stream information.
|
||||
|
||||
This contains information about the audio data in the FLAC file.
|
||||
Unlike most stream information objects in Mutagen, changes to this
|
||||
one will rewritten to the file when it is saved. Unless you are
|
||||
actually changing the audio stream itself, don't change any
|
||||
attributes of this block.
|
||||
|
||||
Attributes:
|
||||
|
||||
* min_blocksize -- minimum audio block size
|
||||
* max_blocksize -- maximum audio block size
|
||||
* sample_rate -- audio sample rate in Hz
|
||||
* channels -- audio channels (1 for mono, 2 for stereo)
|
||||
* bits_per_sample -- bits per sample
|
||||
* total_samples -- total samples in file
|
||||
* length -- audio length in seconds
|
||||
"""
|
||||
|
||||
code = 0
|
||||
|
||||
def __eq__(self, other):
|
||||
try:
|
||||
return (self.min_blocksize == other.min_blocksize and
|
||||
self.max_blocksize == other.max_blocksize and
|
||||
self.sample_rate == other.sample_rate and
|
||||
self.channels == other.channels and
|
||||
self.bits_per_sample == other.bits_per_sample and
|
||||
self.total_samples == other.total_samples)
|
||||
except:
|
||||
return False
|
||||
|
||||
__hash__ = MetadataBlock.__hash__
|
||||
|
||||
def load(self, data):
|
||||
self.min_blocksize = int(to_int_be(data.read(2)))
|
||||
self.max_blocksize = int(to_int_be(data.read(2)))
|
||||
self.min_framesize = int(to_int_be(data.read(3)))
|
||||
self.max_framesize = int(to_int_be(data.read(3)))
|
||||
# first 16 bits of sample rate
|
||||
sample_first = to_int_be(data.read(2))
|
||||
# last 4 bits of sample rate, 3 of channels, first 1 of bits/sample
|
||||
sample_channels_bps = to_int_be(data.read(1))
|
||||
# last 4 of bits/sample, 36 of total samples
|
||||
bps_total = to_int_be(data.read(5))
|
||||
|
||||
sample_tail = sample_channels_bps >> 4
|
||||
self.sample_rate = int((sample_first << 4) + sample_tail)
|
||||
if not self.sample_rate:
|
||||
raise error("A sample rate value of 0 is invalid")
|
||||
self.channels = int(((sample_channels_bps >> 1) & 7) + 1)
|
||||
bps_tail = bps_total >> 36
|
||||
bps_head = (sample_channels_bps & 1) << 4
|
||||
self.bits_per_sample = int(bps_head + bps_tail + 1)
|
||||
self.total_samples = bps_total & 0xFFFFFFFFF
|
||||
self.length = self.total_samples / float(self.sample_rate)
|
||||
|
||||
self.md5_signature = to_int_be(data.read(16))
|
||||
|
||||
def write(self):
|
||||
f = cBytesIO()
|
||||
f.write(struct.pack(">I", self.min_blocksize)[-2:])
|
||||
f.write(struct.pack(">I", self.max_blocksize)[-2:])
|
||||
f.write(struct.pack(">I", self.min_framesize)[-3:])
|
||||
f.write(struct.pack(">I", self.max_framesize)[-3:])
|
||||
|
||||
# first 16 bits of sample rate
|
||||
f.write(struct.pack(">I", self.sample_rate >> 4)[-2:])
|
||||
# 4 bits sample, 3 channel, 1 bps
|
||||
byte = (self.sample_rate & 0xF) << 4
|
||||
byte += ((self.channels - 1) & 7) << 1
|
||||
byte += ((self.bits_per_sample - 1) >> 4) & 1
|
||||
f.write(chr_(byte))
|
||||
# 4 bits of bps, 4 of sample count
|
||||
byte = ((self.bits_per_sample - 1) & 0xF) << 4
|
||||
byte += (self.total_samples >> 32) & 0xF
|
||||
f.write(chr_(byte))
|
||||
# last 32 of sample count
|
||||
f.write(struct.pack(">I", self.total_samples & 0xFFFFFFFF))
|
||||
# MD5 signature
|
||||
sig = self.md5_signature
|
||||
f.write(struct.pack(
|
||||
">4I", (sig >> 96) & 0xFFFFFFFF, (sig >> 64) & 0xFFFFFFFF,
|
||||
(sig >> 32) & 0xFFFFFFFF, sig & 0xFFFFFFFF))
|
||||
return f.getvalue()
|
||||
|
||||
def pprint(self):
|
||||
return u"FLAC, %.2f seconds, %d Hz" % (self.length, self.sample_rate)
|
||||
|
||||
|
||||
class SeekPoint(tuple):
|
||||
"""A single seek point in a FLAC file.
|
||||
|
||||
Placeholder seek points have first_sample of 0xFFFFFFFFFFFFFFFFL,
|
||||
and byte_offset and num_samples undefined. Seek points must be
|
||||
sorted in ascending order by first_sample number. Seek points must
|
||||
be unique by first_sample number, except for placeholder
|
||||
points. Placeholder points must occur last in the table and there
|
||||
may be any number of them.
|
||||
|
||||
Attributes:
|
||||
|
||||
* first_sample -- sample number of first sample in the target frame
|
||||
* byte_offset -- offset from first frame to target frame
|
||||
* num_samples -- number of samples in target frame
|
||||
"""
|
||||
|
||||
def __new__(cls, first_sample, byte_offset, num_samples):
|
||||
return super(cls, SeekPoint).__new__(
|
||||
cls, (first_sample, byte_offset, num_samples))
|
||||
|
||||
first_sample = property(lambda self: self[0])
|
||||
byte_offset = property(lambda self: self[1])
|
||||
num_samples = property(lambda self: self[2])
|
||||
|
||||
|
||||
class SeekTable(MetadataBlock):
|
||||
"""Read and write FLAC seek tables.
|
||||
|
||||
Attributes:
|
||||
|
||||
* seekpoints -- list of SeekPoint objects
|
||||
"""
|
||||
|
||||
__SEEKPOINT_FORMAT = '>QQH'
|
||||
__SEEKPOINT_SIZE = struct.calcsize(__SEEKPOINT_FORMAT)
|
||||
|
||||
code = 3
|
||||
|
||||
def __init__(self, data):
|
||||
self.seekpoints = []
|
||||
super(SeekTable, self).__init__(data)
|
||||
|
||||
def __eq__(self, other):
|
||||
try:
|
||||
return (self.seekpoints == other.seekpoints)
|
||||
except (AttributeError, TypeError):
|
||||
return False
|
||||
|
||||
__hash__ = MetadataBlock.__hash__
|
||||
|
||||
def load(self, data):
|
||||
self.seekpoints = []
|
||||
sp = data.tryread(self.__SEEKPOINT_SIZE)
|
||||
while len(sp) == self.__SEEKPOINT_SIZE:
|
||||
self.seekpoints.append(SeekPoint(
|
||||
*struct.unpack(self.__SEEKPOINT_FORMAT, sp)))
|
||||
sp = data.tryread(self.__SEEKPOINT_SIZE)
|
||||
|
||||
def write(self):
|
||||
f = cBytesIO()
|
||||
for seekpoint in self.seekpoints:
|
||||
packed = struct.pack(
|
||||
self.__SEEKPOINT_FORMAT,
|
||||
seekpoint.first_sample, seekpoint.byte_offset,
|
||||
seekpoint.num_samples)
|
||||
f.write(packed)
|
||||
return f.getvalue()
|
||||
|
||||
def __repr__(self):
|
||||
return "<%s seekpoints=%r>" % (type(self).__name__, self.seekpoints)
|
||||
|
||||
|
||||
class VCFLACDict(VCommentDict):
|
||||
"""Read and write FLAC Vorbis comments.
|
||||
|
||||
FLACs don't use the framing bit at the end of the comment block.
|
||||
So this extends VCommentDict to not use the framing bit.
|
||||
"""
|
||||
|
||||
code = 4
|
||||
_distrust_size = True
|
||||
|
||||
def load(self, data, errors='replace', framing=False):
|
||||
super(VCFLACDict, self).load(data, errors=errors, framing=framing)
|
||||
|
||||
def write(self, framing=False):
|
||||
return super(VCFLACDict, self).write(framing=framing)
|
||||
|
||||
|
||||
class CueSheetTrackIndex(tuple):
|
||||
"""Index for a track in a cuesheet.
|
||||
|
||||
For CD-DA, an index_number of 0 corresponds to the track
|
||||
pre-gap. The first index in a track must have a number of 0 or 1,
|
||||
and subsequently, index_numbers must increase by 1. Index_numbers
|
||||
must be unique within a track. And index_offset must be evenly
|
||||
divisible by 588 samples.
|
||||
|
||||
Attributes:
|
||||
|
||||
* index_number -- index point number
|
||||
* index_offset -- offset in samples from track start
|
||||
"""
|
||||
|
||||
def __new__(cls, index_number, index_offset):
|
||||
return super(cls, CueSheetTrackIndex).__new__(
|
||||
cls, (index_number, index_offset))
|
||||
|
||||
index_number = property(lambda self: self[0])
|
||||
index_offset = property(lambda self: self[1])
|
||||
|
||||
|
||||
class CueSheetTrack(object):
|
||||
"""A track in a cuesheet.
|
||||
|
||||
For CD-DA, track_numbers must be 1-99, or 170 for the
|
||||
lead-out. Track_numbers must be unique within a cue sheet. There
|
||||
must be atleast one index in every track except the lead-out track
|
||||
which must have none.
|
||||
|
||||
Attributes:
|
||||
|
||||
* track_number -- track number
|
||||
* start_offset -- track offset in samples from start of FLAC stream
|
||||
* isrc -- ISRC code
|
||||
* type -- 0 for audio, 1 for digital data
|
||||
* pre_emphasis -- true if the track is recorded with pre-emphasis
|
||||
* indexes -- list of CueSheetTrackIndex objects
|
||||
"""
|
||||
|
||||
def __init__(self, track_number, start_offset, isrc='', type_=0,
|
||||
pre_emphasis=False):
|
||||
self.track_number = track_number
|
||||
self.start_offset = start_offset
|
||||
self.isrc = isrc
|
||||
self.type = type_
|
||||
self.pre_emphasis = pre_emphasis
|
||||
self.indexes = []
|
||||
|
||||
def __eq__(self, other):
|
||||
try:
|
||||
return (self.track_number == other.track_number and
|
||||
self.start_offset == other.start_offset and
|
||||
self.isrc == other.isrc and
|
||||
self.type == other.type and
|
||||
self.pre_emphasis == other.pre_emphasis and
|
||||
self.indexes == other.indexes)
|
||||
except (AttributeError, TypeError):
|
||||
return False
|
||||
|
||||
__hash__ = object.__hash__
|
||||
|
||||
def __repr__(self):
|
||||
return (("<%s number=%r, offset=%d, isrc=%r, type=%r, "
|
||||
"pre_emphasis=%r, indexes=%r)>") %
|
||||
(type(self).__name__, self.track_number, self.start_offset,
|
||||
self.isrc, self.type, self.pre_emphasis, self.indexes))
|
||||
|
||||
|
||||
class CueSheet(MetadataBlock):
|
||||
"""Read and write FLAC embedded cue sheets.
|
||||
|
||||
Number of tracks should be from 1 to 100. There should always be
|
||||
exactly one lead-out track and that track must be the last track
|
||||
in the cue sheet.
|
||||
|
||||
Attributes:
|
||||
|
||||
* media_catalog_number -- media catalog number in ASCII
|
||||
* lead_in_samples -- number of lead-in samples
|
||||
* compact_disc -- true if the cuesheet corresponds to a compact disc
|
||||
* tracks -- list of CueSheetTrack objects
|
||||
* lead_out -- lead-out as CueSheetTrack or None if lead-out was not found
|
||||
"""
|
||||
|
||||
__CUESHEET_FORMAT = '>128sQB258xB'
|
||||
__CUESHEET_SIZE = struct.calcsize(__CUESHEET_FORMAT)
|
||||
__CUESHEET_TRACK_FORMAT = '>QB12sB13xB'
|
||||
__CUESHEET_TRACK_SIZE = struct.calcsize(__CUESHEET_TRACK_FORMAT)
|
||||
__CUESHEET_TRACKINDEX_FORMAT = '>QB3x'
|
||||
__CUESHEET_TRACKINDEX_SIZE = struct.calcsize(__CUESHEET_TRACKINDEX_FORMAT)
|
||||
|
||||
code = 5
|
||||
|
||||
media_catalog_number = b''
|
||||
lead_in_samples = 88200
|
||||
compact_disc = True
|
||||
|
||||
def __init__(self, data):
|
||||
self.tracks = []
|
||||
super(CueSheet, self).__init__(data)
|
||||
|
||||
def __eq__(self, other):
|
||||
try:
|
||||
return (self.media_catalog_number == other.media_catalog_number and
|
||||
self.lead_in_samples == other.lead_in_samples and
|
||||
self.compact_disc == other.compact_disc and
|
||||
self.tracks == other.tracks)
|
||||
except (AttributeError, TypeError):
|
||||
return False
|
||||
|
||||
__hash__ = MetadataBlock.__hash__
|
||||
|
||||
def load(self, data):
|
||||
header = data.read(self.__CUESHEET_SIZE)
|
||||
media_catalog_number, lead_in_samples, flags, num_tracks = \
|
||||
struct.unpack(self.__CUESHEET_FORMAT, header)
|
||||
self.media_catalog_number = media_catalog_number.rstrip(b'\0')
|
||||
self.lead_in_samples = lead_in_samples
|
||||
self.compact_disc = bool(flags & 0x80)
|
||||
self.tracks = []
|
||||
for i in xrange(num_tracks):
|
||||
track = data.read(self.__CUESHEET_TRACK_SIZE)
|
||||
start_offset, track_number, isrc_padded, flags, num_indexes = \
|
||||
struct.unpack(self.__CUESHEET_TRACK_FORMAT, track)
|
||||
isrc = isrc_padded.rstrip(b'\0')
|
||||
type_ = (flags & 0x80) >> 7
|
||||
pre_emphasis = bool(flags & 0x40)
|
||||
val = CueSheetTrack(
|
||||
track_number, start_offset, isrc, type_, pre_emphasis)
|
||||
for j in xrange(num_indexes):
|
||||
index = data.read(self.__CUESHEET_TRACKINDEX_SIZE)
|
||||
index_offset, index_number = struct.unpack(
|
||||
self.__CUESHEET_TRACKINDEX_FORMAT, index)
|
||||
val.indexes.append(
|
||||
CueSheetTrackIndex(index_number, index_offset))
|
||||
self.tracks.append(val)
|
||||
|
||||
def write(self):
|
||||
f = cBytesIO()
|
||||
flags = 0
|
||||
if self.compact_disc:
|
||||
flags |= 0x80
|
||||
packed = struct.pack(
|
||||
self.__CUESHEET_FORMAT, self.media_catalog_number,
|
||||
self.lead_in_samples, flags, len(self.tracks))
|
||||
f.write(packed)
|
||||
for track in self.tracks:
|
||||
track_flags = 0
|
||||
track_flags |= (track.type & 1) << 7
|
||||
if track.pre_emphasis:
|
||||
track_flags |= 0x40
|
||||
track_packed = struct.pack(
|
||||
self.__CUESHEET_TRACK_FORMAT, track.start_offset,
|
||||
track.track_number, track.isrc, track_flags,
|
||||
len(track.indexes))
|
||||
f.write(track_packed)
|
||||
for index in track.indexes:
|
||||
index_packed = struct.pack(
|
||||
self.__CUESHEET_TRACKINDEX_FORMAT,
|
||||
index.index_offset, index.index_number)
|
||||
f.write(index_packed)
|
||||
return f.getvalue()
|
||||
|
||||
def __repr__(self):
|
||||
return (("<%s media_catalog_number=%r, lead_in=%r, compact_disc=%r, "
|
||||
"tracks=%r>") %
|
||||
(type(self).__name__, self.media_catalog_number,
|
||||
self.lead_in_samples, self.compact_disc, self.tracks))
|
||||
|
||||
|
||||
class Picture(MetadataBlock):
|
||||
"""Read and write FLAC embed pictures.
|
||||
|
||||
Attributes:
|
||||
|
||||
* type -- picture type (same as types for ID3 APIC frames)
|
||||
* mime -- MIME type of the picture
|
||||
* desc -- picture's description
|
||||
* width -- width in pixels
|
||||
* height -- height in pixels
|
||||
* depth -- color depth in bits-per-pixel
|
||||
* colors -- number of colors for indexed palettes (like GIF),
|
||||
0 for non-indexed
|
||||
* data -- picture data
|
||||
|
||||
To create a picture from file (in order to add to a FLAC file),
|
||||
instantiate this object without passing anything to the constructor and
|
||||
then set the properties manually::
|
||||
|
||||
p = Picture()
|
||||
|
||||
with open("Folder.jpg", "rb") as f:
|
||||
pic.data = f.read()
|
||||
|
||||
pic.type = id3.PictureType.COVER_FRONT
|
||||
pic.mime = u"image/jpeg"
|
||||
pic.width = 500
|
||||
pic.height = 500
|
||||
pic.depth = 16 # color depth
|
||||
"""
|
||||
|
||||
code = 6
|
||||
_distrust_size = True
|
||||
|
||||
def __init__(self, data=None):
|
||||
self.type = 0
|
||||
self.mime = u''
|
||||
self.desc = u''
|
||||
self.width = 0
|
||||
self.height = 0
|
||||
self.depth = 0
|
||||
self.colors = 0
|
||||
self.data = b''
|
||||
super(Picture, self).__init__(data)
|
||||
|
||||
def __eq__(self, other):
|
||||
try:
|
||||
return (self.type == other.type and
|
||||
self.mime == other.mime and
|
||||
self.desc == other.desc and
|
||||
self.width == other.width and
|
||||
self.height == other.height and
|
||||
self.depth == other.depth and
|
||||
self.colors == other.colors and
|
||||
self.data == other.data)
|
||||
except (AttributeError, TypeError):
|
||||
return False
|
||||
|
||||
__hash__ = MetadataBlock.__hash__
|
||||
|
||||
def load(self, data):
|
||||
self.type, length = struct.unpack('>2I', data.read(8))
|
||||
self.mime = data.read(length).decode('UTF-8', 'replace')
|
||||
length, = struct.unpack('>I', data.read(4))
|
||||
self.desc = data.read(length).decode('UTF-8', 'replace')
|
||||
(self.width, self.height, self.depth,
|
||||
self.colors, length) = struct.unpack('>5I', data.read(20))
|
||||
self.data = data.read(length)
|
||||
|
||||
def write(self):
|
||||
f = cBytesIO()
|
||||
mime = self.mime.encode('UTF-8')
|
||||
f.write(struct.pack('>2I', self.type, len(mime)))
|
||||
f.write(mime)
|
||||
desc = self.desc.encode('UTF-8')
|
||||
f.write(struct.pack('>I', len(desc)))
|
||||
f.write(desc)
|
||||
f.write(struct.pack('>5I', self.width, self.height, self.depth,
|
||||
self.colors, len(self.data)))
|
||||
f.write(self.data)
|
||||
return f.getvalue()
|
||||
|
||||
def __repr__(self):
|
||||
return "<%s '%s' (%d bytes)>" % (type(self).__name__, self.mime,
|
||||
len(self.data))
|
||||
|
||||
|
||||
class Padding(MetadataBlock):
|
||||
"""Empty padding space for metadata blocks.
|
||||
|
||||
To avoid rewriting the entire FLAC file when editing comments,
|
||||
metadata is often padded. Padding should occur at the end, and no
|
||||
more than one padding block should be in any FLAC file.
|
||||
"""
|
||||
|
||||
code = 1
|
||||
|
||||
def __init__(self, data=b""):
|
||||
super(Padding, self).__init__(data)
|
||||
|
||||
def load(self, data):
|
||||
self.length = len(data.read())
|
||||
|
||||
def write(self):
|
||||
try:
|
||||
return b"\x00" * self.length
|
||||
# On some 64 bit platforms this won't generate a MemoryError
|
||||
# or OverflowError since you might have enough RAM, but it
|
||||
# still generates a ValueError. On other 64 bit platforms,
|
||||
# this will still succeed for extremely large values.
|
||||
# Those should never happen in the real world, and if they
|
||||
# do, writeblocks will catch it.
|
||||
except (OverflowError, ValueError, MemoryError):
|
||||
raise error("cannot write %d bytes" % self.length)
|
||||
|
||||
def __eq__(self, other):
|
||||
return isinstance(other, Padding) and self.length == other.length
|
||||
|
||||
__hash__ = MetadataBlock.__hash__
|
||||
|
||||
def __repr__(self):
|
||||
return "<%s (%d bytes)>" % (type(self).__name__, self.length)
|
||||
|
||||
|
||||
class FLAC(mutagen.FileType):
|
||||
"""A FLAC audio file.
|
||||
|
||||
Attributes:
|
||||
|
||||
* cuesheet -- CueSheet object, if any
|
||||
* seektable -- SeekTable object, if any
|
||||
* pictures -- list of embedded pictures
|
||||
"""
|
||||
|
||||
_mimes = ["audio/x-flac", "application/x-flac"]
|
||||
|
||||
info = None
|
||||
"""A `StreamInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
METADATA_BLOCKS = [StreamInfo, Padding, None, SeekTable, VCFLACDict,
|
||||
CueSheet, Picture]
|
||||
"""Known metadata block types, indexed by ID."""
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header_data):
|
||||
return (header_data.startswith(b"fLaC") +
|
||||
endswith(filename.lower(), ".flac") * 3)
|
||||
|
||||
def __read_metadata_block(self, fileobj):
|
||||
byte = ord(fileobj.read(1))
|
||||
size = to_int_be(fileobj.read(3))
|
||||
code = byte & 0x7F
|
||||
last_block = bool(byte & 0x80)
|
||||
|
||||
try:
|
||||
block_type = self.METADATA_BLOCKS[code] or MetadataBlock
|
||||
except IndexError:
|
||||
block_type = MetadataBlock
|
||||
|
||||
if block_type._distrust_size:
|
||||
# Some jackass is writing broken Metadata block length
|
||||
# for Vorbis comment blocks, and the FLAC reference
|
||||
# implementaton can parse them (mostly by accident),
|
||||
# so we have to too. Instead of parsing the size
|
||||
# given, parse an actual Vorbis comment, leaving
|
||||
# fileobj in the right position.
|
||||
# http://code.google.com/p/mutagen/issues/detail?id=52
|
||||
# ..same for the Picture block:
|
||||
# http://code.google.com/p/mutagen/issues/detail?id=106
|
||||
start = fileobj.tell()
|
||||
block = block_type(fileobj)
|
||||
real_size = fileobj.tell() - start
|
||||
if real_size > MetadataBlock._MAX_SIZE:
|
||||
block._invalid_overflow_size = size
|
||||
else:
|
||||
data = fileobj.read(size)
|
||||
block = block_type(data)
|
||||
block.code = code
|
||||
|
||||
if block.code == VCFLACDict.code:
|
||||
if self.tags is None:
|
||||
self.tags = block
|
||||
else:
|
||||
raise FLACVorbisError("> 1 Vorbis comment block found")
|
||||
elif block.code == CueSheet.code:
|
||||
if self.cuesheet is None:
|
||||
self.cuesheet = block
|
||||
else:
|
||||
raise error("> 1 CueSheet block found")
|
||||
elif block.code == SeekTable.code:
|
||||
if self.seektable is None:
|
||||
self.seektable = block
|
||||
else:
|
||||
raise error("> 1 SeekTable block found")
|
||||
self.metadata_blocks.append(block)
|
||||
return not last_block
|
||||
|
||||
def add_tags(self):
|
||||
"""Add a Vorbis comment block to the file."""
|
||||
if self.tags is None:
|
||||
self.tags = VCFLACDict()
|
||||
self.metadata_blocks.append(self.tags)
|
||||
else:
|
||||
raise FLACVorbisError("a Vorbis comment already exists")
|
||||
|
||||
add_vorbiscomment = add_tags
|
||||
|
||||
def delete(self, filename=None):
|
||||
"""Remove Vorbis comments from a file.
|
||||
|
||||
If no filename is given, the one most recently loaded is used.
|
||||
"""
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
|
||||
if self.tags is not None:
|
||||
self.metadata_blocks.remove(self.tags)
|
||||
self.save(padding=lambda x: 0)
|
||||
self.metadata_blocks.append(self.tags)
|
||||
self.tags.clear()
|
||||
|
||||
vc = property(lambda s: s.tags, doc="Alias for tags; don't use this.")
|
||||
|
||||
def load(self, filename):
|
||||
"""Load file information from a filename."""
|
||||
|
||||
self.metadata_blocks = []
|
||||
self.tags = None
|
||||
self.cuesheet = None
|
||||
self.seektable = None
|
||||
self.filename = filename
|
||||
fileobj = StrictFileObject(open(filename, "rb"))
|
||||
try:
|
||||
self.__check_header(fileobj)
|
||||
while self.__read_metadata_block(fileobj):
|
||||
pass
|
||||
finally:
|
||||
fileobj.close()
|
||||
|
||||
try:
|
||||
self.metadata_blocks[0].length
|
||||
except (AttributeError, IndexError):
|
||||
raise FLACNoHeaderError("Stream info block not found")
|
||||
|
||||
@property
|
||||
def info(self):
|
||||
return self.metadata_blocks[0]
|
||||
|
||||
def add_picture(self, picture):
|
||||
"""Add a new picture to the file."""
|
||||
self.metadata_blocks.append(picture)
|
||||
|
||||
def clear_pictures(self):
|
||||
"""Delete all pictures from the file."""
|
||||
|
||||
blocks = [b for b in self.metadata_blocks if b.code != Picture.code]
|
||||
self.metadata_blocks = blocks
|
||||
|
||||
@property
|
||||
def pictures(self):
|
||||
"""List of embedded pictures"""
|
||||
|
||||
return [b for b in self.metadata_blocks if b.code == Picture.code]
|
||||
|
||||
def save(self, filename=None, deleteid3=False, padding=None):
|
||||
"""Save metadata blocks to a file.
|
||||
|
||||
If no filename is given, the one most recently loaded is used.
|
||||
"""
|
||||
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
|
||||
with open(filename, 'rb+') as f:
|
||||
header = self.__check_header(f)
|
||||
audio_offset = self.__find_audio_offset(f)
|
||||
# "fLaC" and maybe ID3
|
||||
available = audio_offset - header
|
||||
|
||||
# Delete ID3v2
|
||||
if deleteid3 and header > 4:
|
||||
available += header - 4
|
||||
header = 4
|
||||
|
||||
content_size = get_size(f) - audio_offset
|
||||
assert content_size >= 0
|
||||
data = MetadataBlock._writeblocks(
|
||||
self.metadata_blocks, available, content_size, padding)
|
||||
data_size = len(data)
|
||||
|
||||
resize_bytes(f, available, data_size, header)
|
||||
f.seek(header - 4)
|
||||
f.write(b"fLaC")
|
||||
f.write(data)
|
||||
|
||||
# Delete ID3v1
|
||||
if deleteid3:
|
||||
try:
|
||||
f.seek(-128, 2)
|
||||
except IOError:
|
||||
pass
|
||||
else:
|
||||
if f.read(3) == b"TAG":
|
||||
f.seek(-128, 2)
|
||||
f.truncate()
|
||||
|
||||
def __find_audio_offset(self, fileobj):
|
||||
byte = 0x00
|
||||
while not (byte & 0x80):
|
||||
byte = ord(fileobj.read(1))
|
||||
size = to_int_be(fileobj.read(3))
|
||||
try:
|
||||
block_type = self.METADATA_BLOCKS[byte & 0x7F]
|
||||
except IndexError:
|
||||
block_type = None
|
||||
|
||||
if block_type and block_type._distrust_size:
|
||||
# See comments in read_metadata_block; the size can't
|
||||
# be trusted for Vorbis comment blocks and Picture block
|
||||
block_type(fileobj)
|
||||
else:
|
||||
fileobj.read(size)
|
||||
return fileobj.tell()
|
||||
|
||||
def __check_header(self, fileobj):
|
||||
"""Returns the offset of the flac block start
|
||||
(skipping id3 tags if found). The passed fileobj will be advanced to
|
||||
that offset as well.
|
||||
"""
|
||||
|
||||
size = 4
|
||||
header = fileobj.read(4)
|
||||
if header != b"fLaC":
|
||||
size = None
|
||||
if header[:3] == b"ID3":
|
||||
size = 14 + BitPaddedInt(fileobj.read(6)[2:])
|
||||
fileobj.seek(size - 4)
|
||||
if fileobj.read(4) != b"fLaC":
|
||||
size = None
|
||||
if size is None:
|
||||
raise FLACNoHeaderError(
|
||||
"%r is not a valid FLAC file" % fileobj.name)
|
||||
return size
|
||||
|
||||
|
||||
Open = FLAC
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
FLAC(filename).delete()
|
||||
File diff suppressed because it is too large
Load diff
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
File diff suppressed because it is too large
Load diff
|
|
@ -1,635 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2005 Michael Urman
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import struct
|
||||
from struct import unpack, pack
|
||||
|
||||
from .._compat import text_type, chr_, PY3, swap_to_string, string_types, \
|
||||
xrange
|
||||
from .._util import total_ordering, decode_terminated, enum, izip
|
||||
from ._util import BitPaddedInt
|
||||
|
||||
|
||||
@enum
|
||||
class PictureType(object):
|
||||
"""Enumeration of image types defined by the ID3 standard for the APIC
|
||||
frame, but also reused in WMA/FLAC/VorbisComment.
|
||||
"""
|
||||
|
||||
OTHER = 0
|
||||
"""Other"""
|
||||
|
||||
FILE_ICON = 1
|
||||
"""32x32 pixels 'file icon' (PNG only)"""
|
||||
|
||||
OTHER_FILE_ICON = 2
|
||||
"""Other file icon"""
|
||||
|
||||
COVER_FRONT = 3
|
||||
"""Cover (front)"""
|
||||
|
||||
COVER_BACK = 4
|
||||
"""Cover (back)"""
|
||||
|
||||
LEAFLET_PAGE = 5
|
||||
"""Leaflet page"""
|
||||
|
||||
MEDIA = 6
|
||||
"""Media (e.g. label side of CD)"""
|
||||
|
||||
LEAD_ARTIST = 7
|
||||
"""Lead artist/lead performer/soloist"""
|
||||
|
||||
ARTIST = 8
|
||||
"""Artist/performer"""
|
||||
|
||||
CONDUCTOR = 9
|
||||
"""Conductor"""
|
||||
|
||||
BAND = 10
|
||||
"""Band/Orchestra"""
|
||||
|
||||
COMPOSER = 11
|
||||
"""Composer"""
|
||||
|
||||
LYRICIST = 12
|
||||
"""Lyricist/text writer"""
|
||||
|
||||
RECORDING_LOCATION = 13
|
||||
"""Recording Location"""
|
||||
|
||||
DURING_RECORDING = 14
|
||||
"""During recording"""
|
||||
|
||||
DURING_PERFORMANCE = 15
|
||||
"""During performance"""
|
||||
|
||||
SCREEN_CAPTURE = 16
|
||||
"""Movie/video screen capture"""
|
||||
|
||||
FISH = 17
|
||||
"""A bright coloured fish"""
|
||||
|
||||
ILLUSTRATION = 18
|
||||
"""Illustration"""
|
||||
|
||||
BAND_LOGOTYPE = 19
|
||||
"""Band/artist logotype"""
|
||||
|
||||
PUBLISHER_LOGOTYPE = 20
|
||||
"""Publisher/Studio logotype"""
|
||||
|
||||
|
||||
class SpecError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class Spec(object):
|
||||
|
||||
def __init__(self, name):
|
||||
self.name = name
|
||||
|
||||
def __hash__(self):
|
||||
raise TypeError("Spec objects are unhashable")
|
||||
|
||||
def _validate23(self, frame, value, **kwargs):
|
||||
"""Return a possibly modified value which, if written,
|
||||
results in valid id3v2.3 data.
|
||||
"""
|
||||
|
||||
return value
|
||||
|
||||
def read(self, frame, data):
|
||||
"""Returns the (value, left_data) or raises SpecError"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
def write(self, frame, value):
|
||||
raise NotImplementedError
|
||||
|
||||
def validate(self, frame, value):
|
||||
"""Returns the validated data or raises ValueError/TypeError"""
|
||||
|
||||
raise NotImplementedError
|
||||
|
||||
|
||||
class ByteSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
return bytearray(data)[0], data[1:]
|
||||
|
||||
def write(self, frame, value):
|
||||
return chr_(value)
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is not None:
|
||||
chr_(value)
|
||||
return value
|
||||
|
||||
|
||||
class IntegerSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
return int(BitPaddedInt(data, bits=8)), b''
|
||||
|
||||
def write(self, frame, value):
|
||||
return BitPaddedInt.to_str(value, bits=8, width=-1)
|
||||
|
||||
def validate(self, frame, value):
|
||||
return value
|
||||
|
||||
|
||||
class SizedIntegerSpec(Spec):
|
||||
def __init__(self, name, size):
|
||||
self.name, self.__sz = name, size
|
||||
|
||||
def read(self, frame, data):
|
||||
return int(BitPaddedInt(data[:self.__sz], bits=8)), data[self.__sz:]
|
||||
|
||||
def write(self, frame, value):
|
||||
return BitPaddedInt.to_str(value, bits=8, width=self.__sz)
|
||||
|
||||
def validate(self, frame, value):
|
||||
return value
|
||||
|
||||
|
||||
@enum
|
||||
class Encoding(object):
|
||||
"""Text Encoding"""
|
||||
|
||||
LATIN1 = 0
|
||||
"""ISO-8859-1"""
|
||||
|
||||
UTF16 = 1
|
||||
"""UTF-16 with BOM"""
|
||||
|
||||
UTF16BE = 2
|
||||
"""UTF-16BE without BOM"""
|
||||
|
||||
UTF8 = 3
|
||||
"""UTF-8"""
|
||||
|
||||
|
||||
class EncodingSpec(ByteSpec):
|
||||
|
||||
def read(self, frame, data):
|
||||
enc, data = super(EncodingSpec, self).read(frame, data)
|
||||
if enc not in (Encoding.LATIN1, Encoding.UTF16, Encoding.UTF16BE,
|
||||
Encoding.UTF8):
|
||||
raise SpecError('Invalid Encoding: %r' % enc)
|
||||
return enc, data
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is None:
|
||||
return None
|
||||
if value not in (Encoding.LATIN1, Encoding.UTF16, Encoding.UTF16BE,
|
||||
Encoding.UTF8):
|
||||
raise ValueError('Invalid Encoding: %r' % value)
|
||||
return value
|
||||
|
||||
def _validate23(self, frame, value, **kwargs):
|
||||
# only 0, 1 are valid in v2.3, default to utf-16
|
||||
if value not in (Encoding.LATIN1, Encoding.UTF16):
|
||||
value = Encoding.UTF16
|
||||
return value
|
||||
|
||||
|
||||
class StringSpec(Spec):
|
||||
"""A fixed size ASCII only payload."""
|
||||
|
||||
def __init__(self, name, length):
|
||||
super(StringSpec, self).__init__(name)
|
||||
self.len = length
|
||||
|
||||
def read(s, frame, data):
|
||||
chunk = data[:s.len]
|
||||
try:
|
||||
ascii = chunk.decode("ascii")
|
||||
except UnicodeDecodeError:
|
||||
raise SpecError("not ascii")
|
||||
else:
|
||||
if PY3:
|
||||
chunk = ascii
|
||||
|
||||
return chunk, data[s.len:]
|
||||
|
||||
def write(s, frame, value):
|
||||
if value is None:
|
||||
return b'\x00' * s.len
|
||||
else:
|
||||
if PY3:
|
||||
value = value.encode("ascii")
|
||||
return (bytes(value) + b'\x00' * s.len)[:s.len]
|
||||
|
||||
def validate(s, frame, value):
|
||||
if value is None:
|
||||
return None
|
||||
|
||||
if PY3:
|
||||
if not isinstance(value, str):
|
||||
raise TypeError("%s has to be str" % s.name)
|
||||
value.encode("ascii")
|
||||
else:
|
||||
if not isinstance(value, bytes):
|
||||
value = value.encode("ascii")
|
||||
|
||||
if len(value) == s.len:
|
||||
return value
|
||||
|
||||
raise ValueError('Invalid StringSpec[%d] data: %r' % (s.len, value))
|
||||
|
||||
|
||||
class BinaryDataSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
return data, b''
|
||||
|
||||
def write(self, frame, value):
|
||||
if value is None:
|
||||
return b""
|
||||
if isinstance(value, bytes):
|
||||
return value
|
||||
value = text_type(value).encode("ascii")
|
||||
return value
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is None:
|
||||
return None
|
||||
|
||||
if isinstance(value, bytes):
|
||||
return value
|
||||
elif PY3:
|
||||
raise TypeError("%s has to be bytes" % self.name)
|
||||
|
||||
value = text_type(value).encode("ascii")
|
||||
return value
|
||||
|
||||
|
||||
class EncodedTextSpec(Spec):
|
||||
|
||||
_encodings = {
|
||||
Encoding.LATIN1: ('latin1', b'\x00'),
|
||||
Encoding.UTF16: ('utf16', b'\x00\x00'),
|
||||
Encoding.UTF16BE: ('utf_16_be', b'\x00\x00'),
|
||||
Encoding.UTF8: ('utf8', b'\x00'),
|
||||
}
|
||||
|
||||
def read(self, frame, data):
|
||||
enc, term = self._encodings[frame.encoding]
|
||||
try:
|
||||
# allow missing termination
|
||||
return decode_terminated(data, enc, strict=False)
|
||||
except ValueError:
|
||||
# utf-16 termination with missing BOM, or single NULL
|
||||
if not data[:len(term)].strip(b"\x00"):
|
||||
return u"", data[len(term):]
|
||||
|
||||
# utf-16 data with single NULL, see issue 169
|
||||
try:
|
||||
return decode_terminated(data + b"\x00", enc)
|
||||
except ValueError:
|
||||
raise SpecError("Decoding error")
|
||||
|
||||
def write(self, frame, value):
|
||||
enc, term = self._encodings[frame.encoding]
|
||||
return value.encode(enc) + term
|
||||
|
||||
def validate(self, frame, value):
|
||||
return text_type(value)
|
||||
|
||||
|
||||
class MultiSpec(Spec):
|
||||
def __init__(self, name, *specs, **kw):
|
||||
super(MultiSpec, self).__init__(name)
|
||||
self.specs = specs
|
||||
self.sep = kw.get('sep')
|
||||
|
||||
def read(self, frame, data):
|
||||
values = []
|
||||
while data:
|
||||
record = []
|
||||
for spec in self.specs:
|
||||
value, data = spec.read(frame, data)
|
||||
record.append(value)
|
||||
if len(self.specs) != 1:
|
||||
values.append(record)
|
||||
else:
|
||||
values.append(record[0])
|
||||
return values, data
|
||||
|
||||
def write(self, frame, value):
|
||||
data = []
|
||||
if len(self.specs) == 1:
|
||||
for v in value:
|
||||
data.append(self.specs[0].write(frame, v))
|
||||
else:
|
||||
for record in value:
|
||||
for v, s in izip(record, self.specs):
|
||||
data.append(s.write(frame, v))
|
||||
return b''.join(data)
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is None:
|
||||
return []
|
||||
if self.sep and isinstance(value, string_types):
|
||||
value = value.split(self.sep)
|
||||
if isinstance(value, list):
|
||||
if len(self.specs) == 1:
|
||||
return [self.specs[0].validate(frame, v) for v in value]
|
||||
else:
|
||||
return [
|
||||
[s.validate(frame, v) for (v, s) in izip(val, self.specs)]
|
||||
for val in value]
|
||||
raise ValueError('Invalid MultiSpec data: %r' % value)
|
||||
|
||||
def _validate23(self, frame, value, **kwargs):
|
||||
if len(self.specs) != 1:
|
||||
return [[s._validate23(frame, v, **kwargs)
|
||||
for (v, s) in izip(val, self.specs)]
|
||||
for val in value]
|
||||
|
||||
spec = self.specs[0]
|
||||
|
||||
# Merge single text spec multispecs only.
|
||||
# (TimeStampSpec beeing the exception, but it's not a valid v2.3 frame)
|
||||
if not isinstance(spec, EncodedTextSpec) or \
|
||||
isinstance(spec, TimeStampSpec):
|
||||
return value
|
||||
|
||||
value = [spec._validate23(frame, v, **kwargs) for v in value]
|
||||
if kwargs.get("sep") is not None:
|
||||
return [spec.validate(frame, kwargs["sep"].join(value))]
|
||||
return value
|
||||
|
||||
|
||||
class EncodedNumericTextSpec(EncodedTextSpec):
|
||||
pass
|
||||
|
||||
|
||||
class EncodedNumericPartTextSpec(EncodedTextSpec):
|
||||
pass
|
||||
|
||||
|
||||
class Latin1TextSpec(EncodedTextSpec):
|
||||
def read(self, frame, data):
|
||||
if b'\x00' in data:
|
||||
data, ret = data.split(b'\x00', 1)
|
||||
else:
|
||||
ret = b''
|
||||
return data.decode('latin1'), ret
|
||||
|
||||
def write(self, data, value):
|
||||
return value.encode('latin1') + b'\x00'
|
||||
|
||||
def validate(self, frame, value):
|
||||
return text_type(value)
|
||||
|
||||
|
||||
@swap_to_string
|
||||
@total_ordering
|
||||
class ID3TimeStamp(object):
|
||||
"""A time stamp in ID3v2 format.
|
||||
|
||||
This is a restricted form of the ISO 8601 standard; time stamps
|
||||
take the form of:
|
||||
YYYY-MM-DD HH:MM:SS
|
||||
Or some partial form (YYYY-MM-DD HH, YYYY, etc.).
|
||||
|
||||
The 'text' attribute contains the raw text data of the time stamp.
|
||||
"""
|
||||
|
||||
import re
|
||||
|
||||
def __init__(self, text):
|
||||
if isinstance(text, ID3TimeStamp):
|
||||
text = text.text
|
||||
elif not isinstance(text, text_type):
|
||||
if PY3:
|
||||
raise TypeError("not a str")
|
||||
text = text.decode("utf-8")
|
||||
|
||||
self.text = text
|
||||
|
||||
__formats = ['%04d'] + ['%02d'] * 5
|
||||
__seps = ['-', '-', ' ', ':', ':', 'x']
|
||||
|
||||
def get_text(self):
|
||||
parts = [self.year, self.month, self.day,
|
||||
self.hour, self.minute, self.second]
|
||||
pieces = []
|
||||
for i, part in enumerate(parts):
|
||||
if part is None:
|
||||
break
|
||||
pieces.append(self.__formats[i] % part + self.__seps[i])
|
||||
return u''.join(pieces)[:-1]
|
||||
|
||||
def set_text(self, text, splitre=re.compile('[-T:/.]|\s+')):
|
||||
year, month, day, hour, minute, second = \
|
||||
splitre.split(text + ':::::')[:6]
|
||||
for a in 'year month day hour minute second'.split():
|
||||
try:
|
||||
v = int(locals()[a])
|
||||
except ValueError:
|
||||
v = None
|
||||
setattr(self, a, v)
|
||||
|
||||
text = property(get_text, set_text, doc="ID3v2.4 date and time.")
|
||||
|
||||
def __str__(self):
|
||||
return self.text
|
||||
|
||||
def __bytes__(self):
|
||||
return self.text.encode("utf-8")
|
||||
|
||||
def __repr__(self):
|
||||
return repr(self.text)
|
||||
|
||||
def __eq__(self, other):
|
||||
return self.text == other.text
|
||||
|
||||
def __lt__(self, other):
|
||||
return self.text < other.text
|
||||
|
||||
__hash__ = object.__hash__
|
||||
|
||||
def encode(self, *args):
|
||||
return self.text.encode(*args)
|
||||
|
||||
|
||||
class TimeStampSpec(EncodedTextSpec):
|
||||
def read(self, frame, data):
|
||||
value, data = super(TimeStampSpec, self).read(frame, data)
|
||||
return self.validate(frame, value), data
|
||||
|
||||
def write(self, frame, data):
|
||||
return super(TimeStampSpec, self).write(frame,
|
||||
data.text.replace(' ', 'T'))
|
||||
|
||||
def validate(self, frame, value):
|
||||
try:
|
||||
return ID3TimeStamp(value)
|
||||
except TypeError:
|
||||
raise ValueError("Invalid ID3TimeStamp: %r" % value)
|
||||
|
||||
|
||||
class ChannelSpec(ByteSpec):
|
||||
(OTHER, MASTER, FRONTRIGHT, FRONTLEFT, BACKRIGHT, BACKLEFT, FRONTCENTRE,
|
||||
BACKCENTRE, SUBWOOFER) = xrange(9)
|
||||
|
||||
|
||||
class VolumeAdjustmentSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
value, = unpack('>h', data[0:2])
|
||||
return value / 512.0, data[2:]
|
||||
|
||||
def write(self, frame, value):
|
||||
number = int(round(value * 512))
|
||||
# pack only fails in 2.7, do it manually in 2.6
|
||||
if not -32768 <= number <= 32767:
|
||||
raise SpecError("not in range")
|
||||
return pack('>h', number)
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is not None:
|
||||
try:
|
||||
self.write(frame, value)
|
||||
except SpecError:
|
||||
raise ValueError("out of range")
|
||||
return value
|
||||
|
||||
|
||||
class VolumePeakSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
# http://bugs.xmms.org/attachment.cgi?id=113&action=view
|
||||
peak = 0
|
||||
data_array = bytearray(data)
|
||||
bits = data_array[0]
|
||||
vol_bytes = min(4, (bits + 7) >> 3)
|
||||
# not enough frame data
|
||||
if vol_bytes + 1 > len(data):
|
||||
raise SpecError("not enough frame data")
|
||||
shift = ((8 - (bits & 7)) & 7) + (4 - vol_bytes) * 8
|
||||
for i in xrange(1, vol_bytes + 1):
|
||||
peak *= 256
|
||||
peak += data_array[i]
|
||||
peak *= 2 ** shift
|
||||
return (float(peak) / (2 ** 31 - 1)), data[1 + vol_bytes:]
|
||||
|
||||
def write(self, frame, value):
|
||||
number = int(round(value * 32768))
|
||||
# pack only fails in 2.7, do it manually in 2.6
|
||||
if not 0 <= number <= 65535:
|
||||
raise SpecError("not in range")
|
||||
# always write as 16 bits for sanity.
|
||||
return b"\x10" + pack('>H', number)
|
||||
|
||||
def validate(self, frame, value):
|
||||
if value is not None:
|
||||
try:
|
||||
self.write(frame, value)
|
||||
except SpecError:
|
||||
raise ValueError("out of range")
|
||||
return value
|
||||
|
||||
|
||||
class SynchronizedTextSpec(EncodedTextSpec):
|
||||
def read(self, frame, data):
|
||||
texts = []
|
||||
encoding, term = self._encodings[frame.encoding]
|
||||
while data:
|
||||
try:
|
||||
value, data = decode_terminated(data, encoding)
|
||||
except ValueError:
|
||||
raise SpecError("decoding error")
|
||||
|
||||
if len(data) < 4:
|
||||
raise SpecError("not enough data")
|
||||
time, = struct.unpack(">I", data[:4])
|
||||
|
||||
texts.append((value, time))
|
||||
data = data[4:]
|
||||
return texts, b""
|
||||
|
||||
def write(self, frame, value):
|
||||
data = []
|
||||
encoding, term = self._encodings[frame.encoding]
|
||||
for text, time in value:
|
||||
text = text.encode(encoding) + term
|
||||
data.append(text + struct.pack(">I", time))
|
||||
return b"".join(data)
|
||||
|
||||
def validate(self, frame, value):
|
||||
return value
|
||||
|
||||
|
||||
class KeyEventSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
events = []
|
||||
while len(data) >= 5:
|
||||
events.append(struct.unpack(">bI", data[:5]))
|
||||
data = data[5:]
|
||||
return events, data
|
||||
|
||||
def write(self, frame, value):
|
||||
return b"".join(struct.pack(">bI", *event) for event in value)
|
||||
|
||||
def validate(self, frame, value):
|
||||
return value
|
||||
|
||||
|
||||
class VolumeAdjustmentsSpec(Spec):
|
||||
# Not to be confused with VolumeAdjustmentSpec.
|
||||
def read(self, frame, data):
|
||||
adjustments = {}
|
||||
while len(data) >= 4:
|
||||
freq, adj = struct.unpack(">Hh", data[:4])
|
||||
data = data[4:]
|
||||
freq /= 2.0
|
||||
adj /= 512.0
|
||||
adjustments[freq] = adj
|
||||
adjustments = sorted(adjustments.items())
|
||||
return adjustments, data
|
||||
|
||||
def write(self, frame, value):
|
||||
value.sort()
|
||||
return b"".join(struct.pack(">Hh", int(freq * 2), int(adj * 512))
|
||||
for (freq, adj) in value)
|
||||
|
||||
def validate(self, frame, value):
|
||||
return value
|
||||
|
||||
|
||||
class ASPIIndexSpec(Spec):
|
||||
def read(self, frame, data):
|
||||
if frame.b == 16:
|
||||
format = "H"
|
||||
size = 2
|
||||
elif frame.b == 8:
|
||||
format = "B"
|
||||
size = 1
|
||||
else:
|
||||
raise SpecError("invalid bit count in ASPI (%d)" % frame.b)
|
||||
|
||||
indexes = data[:frame.N * size]
|
||||
data = data[frame.N * size:]
|
||||
try:
|
||||
return list(struct.unpack(">" + format * frame.N, indexes)), data
|
||||
except struct.error as e:
|
||||
raise SpecError(e)
|
||||
|
||||
def write(self, frame, values):
|
||||
if frame.b == 16:
|
||||
format = "H"
|
||||
elif frame.b == 8:
|
||||
format = "B"
|
||||
else:
|
||||
raise SpecError("frame.b must be 8 or 16")
|
||||
try:
|
||||
return struct.pack(">" + format * frame.N, *values)
|
||||
except struct.error as e:
|
||||
raise SpecError(e)
|
||||
|
||||
def validate(self, frame, values):
|
||||
return values
|
||||
|
|
@ -1,167 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2005 Michael Urman
|
||||
# 2013 Christoph Reiter
|
||||
# 2014 Ben Ockmore
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
from .._compat import long_, integer_types, PY3
|
||||
from .._util import MutagenError
|
||||
|
||||
|
||||
class error(MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class ID3NoHeaderError(error, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class ID3UnsupportedVersionError(error, NotImplementedError):
|
||||
pass
|
||||
|
||||
|
||||
class ID3EncryptionUnsupportedError(error, NotImplementedError):
|
||||
pass
|
||||
|
||||
|
||||
class ID3JunkFrameError(error, ValueError):
|
||||
pass
|
||||
|
||||
|
||||
class unsynch(object):
|
||||
@staticmethod
|
||||
def decode(value):
|
||||
fragments = bytearray(value).split(b'\xff')
|
||||
if len(fragments) > 1 and not fragments[-1]:
|
||||
raise ValueError('string ended unsafe')
|
||||
|
||||
for f in fragments[1:]:
|
||||
if (not f) or (f[0] >= 0xE0):
|
||||
raise ValueError('invalid sync-safe string')
|
||||
|
||||
if f[0] == 0x00:
|
||||
del f[0]
|
||||
|
||||
return bytes(bytearray(b'\xff').join(fragments))
|
||||
|
||||
@staticmethod
|
||||
def encode(value):
|
||||
fragments = bytearray(value).split(b'\xff')
|
||||
for f in fragments[1:]:
|
||||
if (not f) or (f[0] >= 0xE0) or (f[0] == 0x00):
|
||||
f.insert(0, 0x00)
|
||||
return bytes(bytearray(b'\xff').join(fragments))
|
||||
|
||||
|
||||
class _BitPaddedMixin(object):
|
||||
|
||||
def as_str(self, width=4, minwidth=4):
|
||||
return self.to_str(self, self.bits, self.bigendian, width, minwidth)
|
||||
|
||||
@staticmethod
|
||||
def to_str(value, bits=7, bigendian=True, width=4, minwidth=4):
|
||||
mask = (1 << bits) - 1
|
||||
|
||||
if width != -1:
|
||||
index = 0
|
||||
bytes_ = bytearray(width)
|
||||
try:
|
||||
while value:
|
||||
bytes_[index] = value & mask
|
||||
value >>= bits
|
||||
index += 1
|
||||
except IndexError:
|
||||
raise ValueError('Value too wide (>%d bytes)' % width)
|
||||
else:
|
||||
# PCNT and POPM use growing integers
|
||||
# of at least 4 bytes (=minwidth) as counters.
|
||||
bytes_ = bytearray()
|
||||
append = bytes_.append
|
||||
while value:
|
||||
append(value & mask)
|
||||
value >>= bits
|
||||
bytes_ = bytes_.ljust(minwidth, b"\x00")
|
||||
|
||||
if bigendian:
|
||||
bytes_.reverse()
|
||||
return bytes(bytes_)
|
||||
|
||||
@staticmethod
|
||||
def has_valid_padding(value, bits=7):
|
||||
"""Whether the padding bits are all zero"""
|
||||
|
||||
assert bits <= 8
|
||||
|
||||
mask = (((1 << (8 - bits)) - 1) << bits)
|
||||
|
||||
if isinstance(value, integer_types):
|
||||
while value:
|
||||
if value & mask:
|
||||
return False
|
||||
value >>= 8
|
||||
elif isinstance(value, bytes):
|
||||
for byte in bytearray(value):
|
||||
if byte & mask:
|
||||
return False
|
||||
else:
|
||||
raise TypeError
|
||||
|
||||
return True
|
||||
|
||||
|
||||
class BitPaddedInt(int, _BitPaddedMixin):
|
||||
|
||||
def __new__(cls, value, bits=7, bigendian=True):
|
||||
|
||||
mask = (1 << (bits)) - 1
|
||||
numeric_value = 0
|
||||
shift = 0
|
||||
|
||||
if isinstance(value, integer_types):
|
||||
while value:
|
||||
numeric_value += (value & mask) << shift
|
||||
value >>= 8
|
||||
shift += bits
|
||||
elif isinstance(value, bytes):
|
||||
if bigendian:
|
||||
value = reversed(value)
|
||||
for byte in bytearray(value):
|
||||
numeric_value += (byte & mask) << shift
|
||||
shift += bits
|
||||
else:
|
||||
raise TypeError
|
||||
|
||||
if isinstance(numeric_value, int):
|
||||
self = int.__new__(BitPaddedInt, numeric_value)
|
||||
else:
|
||||
self = long_.__new__(BitPaddedLong, numeric_value)
|
||||
|
||||
self.bits = bits
|
||||
self.bigendian = bigendian
|
||||
return self
|
||||
|
||||
if PY3:
|
||||
BitPaddedLong = BitPaddedInt
|
||||
else:
|
||||
class BitPaddedLong(long_, _BitPaddedMixin):
|
||||
pass
|
||||
|
||||
|
||||
class ID3BadUnsynchData(error, ValueError):
|
||||
"""Deprecated"""
|
||||
|
||||
|
||||
class ID3BadCompressedData(error, ValueError):
|
||||
"""Deprecated"""
|
||||
|
||||
|
||||
class ID3TagError(error, ValueError):
|
||||
"""Deprecated"""
|
||||
|
||||
|
||||
class ID3Warning(error, UserWarning):
|
||||
"""Deprecated"""
|
||||
|
|
@ -1,101 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""
|
||||
since 1.9: mutagen.m4a is deprecated; use mutagen.mp4 instead.
|
||||
since 1.31: mutagen.m4a will no longer work; any operation that could fail
|
||||
will fail now.
|
||||
"""
|
||||
|
||||
import warnings
|
||||
|
||||
from mutagen import FileType, Metadata, StreamInfo
|
||||
from ._util import DictProxy, MutagenError
|
||||
|
||||
warnings.warn(
|
||||
"mutagen.m4a is deprecated; use mutagen.mp4 instead.",
|
||||
DeprecationWarning)
|
||||
|
||||
|
||||
class error(IOError, MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class M4AMetadataError(error):
|
||||
pass
|
||||
|
||||
|
||||
class M4AStreamInfoError(error):
|
||||
pass
|
||||
|
||||
|
||||
class M4AMetadataValueError(ValueError, M4AMetadataError):
|
||||
pass
|
||||
|
||||
|
||||
__all__ = ['M4A', 'Open', 'delete', 'M4ACover']
|
||||
|
||||
|
||||
class M4ACover(bytes):
|
||||
|
||||
FORMAT_JPEG = 0x0D
|
||||
FORMAT_PNG = 0x0E
|
||||
|
||||
def __new__(cls, data, imageformat=None):
|
||||
self = bytes.__new__(cls, data)
|
||||
if imageformat is None:
|
||||
imageformat = M4ACover.FORMAT_JPEG
|
||||
self.imageformat = imageformat
|
||||
return self
|
||||
|
||||
|
||||
class M4ATags(DictProxy, Metadata):
|
||||
|
||||
def load(self, atoms, fileobj):
|
||||
raise error("deprecated")
|
||||
|
||||
def save(self, filename):
|
||||
raise error("deprecated")
|
||||
|
||||
def delete(self, filename):
|
||||
raise error("deprecated")
|
||||
|
||||
def pprint(self):
|
||||
return u""
|
||||
|
||||
|
||||
class M4AInfo(StreamInfo):
|
||||
|
||||
bitrate = 0
|
||||
|
||||
def __init__(self, atoms, fileobj):
|
||||
raise error("deprecated")
|
||||
|
||||
def pprint(self):
|
||||
return u""
|
||||
|
||||
|
||||
class M4A(FileType):
|
||||
|
||||
_mimes = ["audio/mp4", "audio/x-m4a", "audio/mpeg4", "audio/aac"]
|
||||
|
||||
def load(self, filename):
|
||||
raise error("deprecated")
|
||||
|
||||
def add_tags(self):
|
||||
self.tags = M4ATags()
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return 0
|
||||
|
||||
|
||||
Open = M4A
|
||||
|
||||
|
||||
def delete(filename):
|
||||
raise error("deprecated")
|
||||
|
|
@ -1,86 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Monkey's Audio streams with APEv2 tags.
|
||||
|
||||
Monkey's Audio is a very efficient lossless audio compressor developed
|
||||
by Matt Ashland.
|
||||
|
||||
For more information, see http://www.monkeysaudio.com/.
|
||||
"""
|
||||
|
||||
__all__ = ["MonkeysAudio", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from ._compat import endswith
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.apev2 import APEv2File, error, delete
|
||||
from mutagen._util import cdata
|
||||
|
||||
|
||||
class MonkeysAudioHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class MonkeysAudioInfo(StreamInfo):
|
||||
"""Monkey's Audio stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* channels -- number of audio channels
|
||||
* length -- file length in seconds, as a float
|
||||
* sample_rate -- audio sampling rate in Hz
|
||||
* bits_per_sample -- bits per sample
|
||||
* version -- Monkey's Audio stream version, as a float (eg: 3.99)
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
header = fileobj.read(76)
|
||||
if len(header) != 76 or not header.startswith(b"MAC "):
|
||||
raise MonkeysAudioHeaderError("not a Monkey's Audio file")
|
||||
self.version = cdata.ushort_le(header[4:6])
|
||||
if self.version >= 3980:
|
||||
(blocks_per_frame, final_frame_blocks, total_frames,
|
||||
self.bits_per_sample, self.channels,
|
||||
self.sample_rate) = struct.unpack("<IIIHHI", header[56:76])
|
||||
else:
|
||||
compression_level = cdata.ushort_le(header[6:8])
|
||||
self.channels, self.sample_rate = struct.unpack(
|
||||
"<HI", header[10:16])
|
||||
total_frames, final_frame_blocks = struct.unpack(
|
||||
"<II", header[24:32])
|
||||
if self.version >= 3950:
|
||||
blocks_per_frame = 73728 * 4
|
||||
elif self.version >= 3900 or (self.version >= 3800 and
|
||||
compression_level == 4):
|
||||
blocks_per_frame = 73728
|
||||
else:
|
||||
blocks_per_frame = 9216
|
||||
self.version /= 1000.0
|
||||
self.length = 0.0
|
||||
if (self.sample_rate != 0) and (total_frames > 0):
|
||||
total_blocks = ((total_frames - 1) * blocks_per_frame +
|
||||
final_frame_blocks)
|
||||
self.length = float(total_blocks) / self.sample_rate
|
||||
|
||||
def pprint(self):
|
||||
return u"Monkey's Audio %.2f, %.2f seconds, %d Hz" % (
|
||||
self.version, self.length, self.sample_rate)
|
||||
|
||||
|
||||
class MonkeysAudio(APEv2File):
|
||||
_Info = MonkeysAudioInfo
|
||||
_mimes = ["audio/ape", "audio/x-ape"]
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return header.startswith(b"MAC ") + endswith(filename.lower(), ".ape")
|
||||
|
||||
|
||||
Open = MonkeysAudio
|
||||
|
|
@ -1,362 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""MPEG audio stream information and tags."""
|
||||
|
||||
import os
|
||||
import struct
|
||||
|
||||
from ._compat import endswith, xrange
|
||||
from ._mp3util import XingHeader, XingHeaderError, VBRIHeader, VBRIHeaderError
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._util import MutagenError, enum
|
||||
from mutagen.id3 import ID3FileType, BitPaddedInt, delete
|
||||
|
||||
__all__ = ["MP3", "Open", "delete", "MP3"]
|
||||
|
||||
|
||||
class error(RuntimeError, MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class HeaderNotFoundError(error, IOError):
|
||||
pass
|
||||
|
||||
|
||||
class InvalidMPEGHeader(error, IOError):
|
||||
pass
|
||||
|
||||
|
||||
@enum
|
||||
class BitrateMode(object):
|
||||
|
||||
UNKNOWN = 0
|
||||
"""Probably a CBR file, but not sure"""
|
||||
|
||||
CBR = 1
|
||||
"""Constant Bitrate"""
|
||||
|
||||
VBR = 2
|
||||
"""Variable Bitrate"""
|
||||
|
||||
ABR = 3
|
||||
"""Average Bitrate (a variant of VBR)"""
|
||||
|
||||
|
||||
def _guess_xing_bitrate_mode(xing):
|
||||
|
||||
if xing.lame_header:
|
||||
lame = xing.lame_header
|
||||
if lame.vbr_method in (1, 8):
|
||||
return BitrateMode.CBR
|
||||
elif lame.vbr_method in (2, 9):
|
||||
return BitrateMode.ABR
|
||||
elif lame.vbr_method in (3, 4, 5, 6):
|
||||
return BitrateMode.VBR
|
||||
# everything else undefined, continue guessing
|
||||
|
||||
# info tags get only written by lame for cbr files
|
||||
if xing.is_info:
|
||||
return BitrateMode.CBR
|
||||
|
||||
# older lame and non-lame with some variant of vbr
|
||||
if xing.vbr_scale != -1 or xing.lame_version:
|
||||
return BitrateMode.VBR
|
||||
|
||||
return BitrateMode.UNKNOWN
|
||||
|
||||
|
||||
# Mode values.
|
||||
STEREO, JOINTSTEREO, DUALCHANNEL, MONO = xrange(4)
|
||||
|
||||
|
||||
class MPEGInfo(StreamInfo):
|
||||
"""MPEG audio stream information
|
||||
|
||||
Parse information about an MPEG audio file. This also reads the
|
||||
Xing VBR header format.
|
||||
|
||||
This code was implemented based on the format documentation at
|
||||
http://mpgedit.org/mpgedit/mpeg_format/mpeghdr.htm.
|
||||
|
||||
Useful attributes:
|
||||
|
||||
* length -- audio length, in seconds
|
||||
* channels -- number of audio channels
|
||||
* bitrate -- audio bitrate, in bits per second
|
||||
* sketchy -- if true, the file may not be valid MPEG audio
|
||||
* encoder_info -- a string containing encoder name and possibly version.
|
||||
In case a lame tag is present this will start with
|
||||
``"LAME "``, if unknown it is empty, otherwise the
|
||||
text format is undefined.
|
||||
* bitrate_mode -- a :class:`BitrateMode`
|
||||
|
||||
* track_gain -- replaygain track gain (89db) or None
|
||||
* track_peak -- replaygain track peak or None
|
||||
* album_gain -- replaygain album gain (89db) or None
|
||||
|
||||
Useless attributes:
|
||||
|
||||
* version -- MPEG version (1, 2, 2.5)
|
||||
* layer -- 1, 2, or 3
|
||||
* mode -- One of STEREO, JOINTSTEREO, DUALCHANNEL, or MONO (0-3)
|
||||
* protected -- whether or not the file is "protected"
|
||||
* padding -- whether or not audio frames are padded
|
||||
* sample_rate -- audio sample rate, in Hz
|
||||
"""
|
||||
|
||||
# Map (version, layer) tuples to bitrates.
|
||||
__BITRATE = {
|
||||
(1, 1): [0, 32, 64, 96, 128, 160, 192, 224,
|
||||
256, 288, 320, 352, 384, 416, 448],
|
||||
(1, 2): [0, 32, 48, 56, 64, 80, 96, 112, 128,
|
||||
160, 192, 224, 256, 320, 384],
|
||||
(1, 3): [0, 32, 40, 48, 56, 64, 80, 96, 112,
|
||||
128, 160, 192, 224, 256, 320],
|
||||
(2, 1): [0, 32, 48, 56, 64, 80, 96, 112, 128,
|
||||
144, 160, 176, 192, 224, 256],
|
||||
(2, 2): [0, 8, 16, 24, 32, 40, 48, 56, 64,
|
||||
80, 96, 112, 128, 144, 160],
|
||||
}
|
||||
|
||||
__BITRATE[(2, 3)] = __BITRATE[(2, 2)]
|
||||
for i in xrange(1, 4):
|
||||
__BITRATE[(2.5, i)] = __BITRATE[(2, i)]
|
||||
|
||||
# Map version to sample rates.
|
||||
__RATES = {
|
||||
1: [44100, 48000, 32000],
|
||||
2: [22050, 24000, 16000],
|
||||
2.5: [11025, 12000, 8000]
|
||||
}
|
||||
|
||||
sketchy = False
|
||||
encoder_info = u""
|
||||
bitrate_mode = BitrateMode.UNKNOWN
|
||||
track_gain = track_peak = album_gain = album_peak = None
|
||||
|
||||
def __init__(self, fileobj, offset=None):
|
||||
"""Parse MPEG stream information from a file-like object.
|
||||
|
||||
If an offset argument is given, it is used to start looking
|
||||
for stream information and Xing headers; otherwise, ID3v2 tags
|
||||
will be skipped automatically. A correct offset can make
|
||||
loading files significantly faster.
|
||||
"""
|
||||
|
||||
try:
|
||||
size = os.path.getsize(fileobj.name)
|
||||
except (IOError, OSError, AttributeError):
|
||||
fileobj.seek(0, 2)
|
||||
size = fileobj.tell()
|
||||
|
||||
# If we don't get an offset, try to skip an ID3v2 tag.
|
||||
if offset is None:
|
||||
fileobj.seek(0, 0)
|
||||
idata = fileobj.read(10)
|
||||
try:
|
||||
id3, insize = struct.unpack('>3sxxx4s', idata)
|
||||
except struct.error:
|
||||
id3, insize = b'', 0
|
||||
insize = BitPaddedInt(insize)
|
||||
if id3 == b'ID3' and insize > 0:
|
||||
offset = insize + 10
|
||||
else:
|
||||
offset = 0
|
||||
|
||||
# Try to find two valid headers (meaning, very likely MPEG data)
|
||||
# at the given offset, 30% through the file, 60% through the file,
|
||||
# and 90% through the file.
|
||||
for i in [offset, 0.3 * size, 0.6 * size, 0.9 * size]:
|
||||
try:
|
||||
self.__try(fileobj, int(i), size - offset)
|
||||
except error:
|
||||
pass
|
||||
else:
|
||||
break
|
||||
# If we can't find any two consecutive frames, try to find just
|
||||
# one frame back at the original offset given.
|
||||
else:
|
||||
self.__try(fileobj, offset, size - offset, False)
|
||||
self.sketchy = True
|
||||
|
||||
def __try(self, fileobj, offset, real_size, check_second=True):
|
||||
# This is going to be one really long function; bear with it,
|
||||
# because there's not really a sane point to cut it up.
|
||||
fileobj.seek(offset, 0)
|
||||
|
||||
# We "know" we have an MPEG file if we find two frames that look like
|
||||
# valid MPEG data. If we can't find them in 32k of reads, something
|
||||
# is horribly wrong (the longest frame can only be about 4k). This
|
||||
# is assuming the offset didn't lie.
|
||||
data = fileobj.read(32768)
|
||||
|
||||
frame_1 = data.find(b"\xff")
|
||||
while 0 <= frame_1 <= (len(data) - 4):
|
||||
frame_data = struct.unpack(">I", data[frame_1:frame_1 + 4])[0]
|
||||
if ((frame_data >> 16) & 0xE0) != 0xE0:
|
||||
frame_1 = data.find(b"\xff", frame_1 + 2)
|
||||
else:
|
||||
version = (frame_data >> 19) & 0x3
|
||||
layer = (frame_data >> 17) & 0x3
|
||||
protection = (frame_data >> 16) & 0x1
|
||||
bitrate = (frame_data >> 12) & 0xF
|
||||
sample_rate = (frame_data >> 10) & 0x3
|
||||
padding = (frame_data >> 9) & 0x1
|
||||
# private = (frame_data >> 8) & 0x1
|
||||
self.mode = (frame_data >> 6) & 0x3
|
||||
# mode_extension = (frame_data >> 4) & 0x3
|
||||
# copyright = (frame_data >> 3) & 0x1
|
||||
# original = (frame_data >> 2) & 0x1
|
||||
# emphasis = (frame_data >> 0) & 0x3
|
||||
if (version == 1 or layer == 0 or sample_rate == 0x3 or
|
||||
bitrate == 0 or bitrate == 0xF):
|
||||
frame_1 = data.find(b"\xff", frame_1 + 2)
|
||||
else:
|
||||
break
|
||||
else:
|
||||
raise HeaderNotFoundError("can't sync to an MPEG frame")
|
||||
|
||||
self.channels = 1 if self.mode == MONO else 2
|
||||
|
||||
# There is a serious problem here, which is that many flags
|
||||
# in an MPEG header are backwards.
|
||||
self.version = [2.5, None, 2, 1][version]
|
||||
self.layer = 4 - layer
|
||||
self.protected = not protection
|
||||
self.padding = bool(padding)
|
||||
|
||||
self.bitrate = self.__BITRATE[(self.version, self.layer)][bitrate]
|
||||
self.bitrate *= 1000
|
||||
self.sample_rate = self.__RATES[self.version][sample_rate]
|
||||
|
||||
if self.layer == 1:
|
||||
frame_length = (
|
||||
(12 * self.bitrate // self.sample_rate) + padding) * 4
|
||||
frame_size = 384
|
||||
elif self.version >= 2 and self.layer == 3:
|
||||
frame_length = (72 * self.bitrate // self.sample_rate) + padding
|
||||
frame_size = 576
|
||||
else:
|
||||
frame_length = (144 * self.bitrate // self.sample_rate) + padding
|
||||
frame_size = 1152
|
||||
|
||||
if check_second:
|
||||
possible = int(frame_1 + frame_length)
|
||||
if possible > len(data) + 4:
|
||||
raise HeaderNotFoundError("can't sync to second MPEG frame")
|
||||
try:
|
||||
frame_data = struct.unpack(
|
||||
">H", data[possible:possible + 2])[0]
|
||||
except struct.error:
|
||||
raise HeaderNotFoundError("can't sync to second MPEG frame")
|
||||
if (frame_data & 0xFFE0) != 0xFFE0:
|
||||
raise HeaderNotFoundError("can't sync to second MPEG frame")
|
||||
|
||||
self.length = 8 * real_size / float(self.bitrate)
|
||||
|
||||
# Try to find/parse the Xing header, which trumps the above length
|
||||
# and bitrate calculation.
|
||||
|
||||
if self.layer != 3:
|
||||
return
|
||||
|
||||
# Xing
|
||||
xing_offset = XingHeader.get_offset(self)
|
||||
fileobj.seek(offset + frame_1 + xing_offset, 0)
|
||||
try:
|
||||
xing = XingHeader(fileobj)
|
||||
except XingHeaderError:
|
||||
pass
|
||||
else:
|
||||
lame = xing.lame_header
|
||||
self.sketchy = False
|
||||
self.bitrate_mode = _guess_xing_bitrate_mode(xing)
|
||||
if xing.frames != -1:
|
||||
samples = frame_size * xing.frames
|
||||
if lame is not None:
|
||||
samples -= lame.encoder_delay_start
|
||||
samples -= lame.encoder_padding_end
|
||||
self.length = float(samples) / self.sample_rate
|
||||
if xing.bytes != -1 and self.length:
|
||||
self.bitrate = int((xing.bytes * 8) / self.length)
|
||||
if xing.lame_version:
|
||||
self.encoder_info = u"LAME %s" % xing.lame_version
|
||||
if lame is not None:
|
||||
self.track_gain = lame.track_gain_adjustment
|
||||
self.track_peak = lame.track_peak
|
||||
self.album_gain = lame.album_gain_adjustment
|
||||
return
|
||||
|
||||
# VBRI
|
||||
vbri_offset = VBRIHeader.get_offset(self)
|
||||
fileobj.seek(offset + frame_1 + vbri_offset, 0)
|
||||
try:
|
||||
vbri = VBRIHeader(fileobj)
|
||||
except VBRIHeaderError:
|
||||
pass
|
||||
else:
|
||||
self.bitrate_mode = BitrateMode.VBR
|
||||
self.encoder_info = u"FhG"
|
||||
self.sketchy = False
|
||||
self.length = float(frame_size * vbri.frames) / self.sample_rate
|
||||
if self.length:
|
||||
self.bitrate = int((vbri.bytes * 8) / self.length)
|
||||
|
||||
def pprint(self):
|
||||
info = str(self.bitrate_mode).split(".", 1)[-1]
|
||||
if self.bitrate_mode == BitrateMode.UNKNOWN:
|
||||
info = u"CBR?"
|
||||
if self.encoder_info:
|
||||
info += ", %s" % self.encoder_info
|
||||
s = u"MPEG %s layer %d, %d bps (%s), %s Hz, %d chn, %.2f seconds" % (
|
||||
self.version, self.layer, self.bitrate, info,
|
||||
self.sample_rate, self.channels, self.length)
|
||||
if self.sketchy:
|
||||
s += u" (sketchy)"
|
||||
return s
|
||||
|
||||
|
||||
class MP3(ID3FileType):
|
||||
"""An MPEG audio (usually MPEG-1 Layer 3) file.
|
||||
|
||||
:ivar info: :class:`MPEGInfo`
|
||||
:ivar tags: :class:`ID3 <mutagen.id3.ID3>`
|
||||
"""
|
||||
|
||||
_Info = MPEGInfo
|
||||
|
||||
_mimes = ["audio/mpeg", "audio/mpg", "audio/x-mpeg"]
|
||||
|
||||
@property
|
||||
def mime(self):
|
||||
l = self.info.layer
|
||||
return ["audio/mp%d" % l, "audio/x-mp%d" % l] + super(MP3, self).mime
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header_data):
|
||||
filename = filename.lower()
|
||||
|
||||
return (header_data.startswith(b"ID3") * 2 +
|
||||
endswith(filename, b".mp3") +
|
||||
endswith(filename, b".mp2") + endswith(filename, b".mpg") +
|
||||
endswith(filename, b".mpeg"))
|
||||
|
||||
|
||||
Open = MP3
|
||||
|
||||
|
||||
class EasyMP3(MP3):
|
||||
"""Like MP3, but uses EasyID3 for tags.
|
||||
|
||||
:ivar info: :class:`MPEGInfo`
|
||||
:ivar tags: :class:`EasyID3 <mutagen.easyid3.EasyID3>`
|
||||
"""
|
||||
|
||||
from mutagen.easyid3 import EasyID3 as ID3
|
||||
ID3 = ID3
|
||||
File diff suppressed because it is too large
Load diff
Binary file not shown.
Binary file not shown.
Binary file not shown.
Binary file not shown.
|
|
@ -1,542 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2014 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
from mutagen._compat import cBytesIO, xrange
|
||||
from mutagen.aac import ProgramConfigElement
|
||||
from mutagen._util import BitReader, BitReaderError, cdata
|
||||
from mutagen._compat import text_type
|
||||
from ._util import parse_full_atom
|
||||
from ._atom import Atom, AtomError
|
||||
|
||||
|
||||
class ASEntryError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class AudioSampleEntry(object):
|
||||
"""Parses an AudioSampleEntry atom.
|
||||
|
||||
Private API.
|
||||
|
||||
Attrs:
|
||||
channels (int): number of channels
|
||||
sample_size (int): sample size in bits
|
||||
sample_rate (int): sample rate in Hz
|
||||
bitrate (int): bits per second (0 means unknown)
|
||||
codec (string):
|
||||
audio codec, either 'mp4a[.*][.*]' (rfc6381) or 'alac'
|
||||
codec_description (string): descriptive codec name e.g. "AAC LC+SBR"
|
||||
|
||||
Can raise ASEntryError.
|
||||
"""
|
||||
|
||||
channels = 0
|
||||
sample_size = 0
|
||||
sample_rate = 0
|
||||
bitrate = 0
|
||||
codec = None
|
||||
codec_description = None
|
||||
|
||||
def __init__(self, atom, fileobj):
|
||||
ok, data = atom.read(fileobj)
|
||||
if not ok:
|
||||
raise ASEntryError("too short %r atom" % atom.name)
|
||||
|
||||
fileobj = cBytesIO(data)
|
||||
r = BitReader(fileobj)
|
||||
|
||||
try:
|
||||
# SampleEntry
|
||||
r.skip(6 * 8) # reserved
|
||||
r.skip(2 * 8) # data_ref_index
|
||||
|
||||
# AudioSampleEntry
|
||||
r.skip(8 * 8) # reserved
|
||||
self.channels = r.bits(16)
|
||||
self.sample_size = r.bits(16)
|
||||
r.skip(2 * 8) # pre_defined
|
||||
r.skip(2 * 8) # reserved
|
||||
self.sample_rate = r.bits(32) >> 16
|
||||
except BitReaderError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
assert r.is_aligned()
|
||||
|
||||
try:
|
||||
extra = Atom(fileobj)
|
||||
except AtomError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
self.codec = atom.name.decode("latin-1")
|
||||
self.codec_description = None
|
||||
|
||||
if atom.name == b"mp4a" and extra.name == b"esds":
|
||||
self._parse_esds(extra, fileobj)
|
||||
elif atom.name == b"alac" and extra.name == b"alac":
|
||||
self._parse_alac(extra, fileobj)
|
||||
elif atom.name == b"ac-3" and extra.name == b"dac3":
|
||||
self._parse_dac3(extra, fileobj)
|
||||
|
||||
if self.codec_description is None:
|
||||
self.codec_description = self.codec.upper()
|
||||
|
||||
def _parse_dac3(self, atom, fileobj):
|
||||
# ETSI TS 102 366
|
||||
|
||||
assert atom.name == b"dac3"
|
||||
|
||||
ok, data = atom.read(fileobj)
|
||||
if not ok:
|
||||
raise ASEntryError("truncated %s atom" % atom.name)
|
||||
fileobj = cBytesIO(data)
|
||||
r = BitReader(fileobj)
|
||||
|
||||
# sample_rate in AudioSampleEntry covers values in
|
||||
# fscod2 and not just fscod, so ignore fscod here.
|
||||
try:
|
||||
r.skip(2 + 5 + 3) # fscod, bsid, bsmod
|
||||
acmod = r.bits(3)
|
||||
lfeon = r.bits(1)
|
||||
bit_rate_code = r.bits(5)
|
||||
r.skip(5) # reserved
|
||||
except BitReaderError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
self.channels = [2, 1, 2, 3, 3, 4, 4, 5][acmod] + lfeon
|
||||
|
||||
try:
|
||||
self.bitrate = [
|
||||
32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192,
|
||||
224, 256, 320, 384, 448, 512, 576, 640][bit_rate_code] * 1000
|
||||
except IndexError:
|
||||
pass
|
||||
|
||||
def _parse_alac(self, atom, fileobj):
|
||||
# https://alac.macosforge.org/trac/browser/trunk/
|
||||
# ALACMagicCookieDescription.txt
|
||||
|
||||
assert atom.name == b"alac"
|
||||
|
||||
ok, data = atom.read(fileobj)
|
||||
if not ok:
|
||||
raise ASEntryError("truncated %s atom" % atom.name)
|
||||
|
||||
try:
|
||||
version, flags, data = parse_full_atom(data)
|
||||
except ValueError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
if version != 0:
|
||||
raise ASEntryError("Unsupported version %d" % version)
|
||||
|
||||
fileobj = cBytesIO(data)
|
||||
r = BitReader(fileobj)
|
||||
|
||||
try:
|
||||
# for some files the AudioSampleEntry values default to 44100/2chan
|
||||
# and the real info is in the alac cookie, so prefer it
|
||||
r.skip(32) # frameLength
|
||||
compatibleVersion = r.bits(8)
|
||||
if compatibleVersion != 0:
|
||||
return
|
||||
self.sample_size = r.bits(8)
|
||||
r.skip(8 + 8 + 8)
|
||||
self.channels = r.bits(8)
|
||||
r.skip(16 + 32)
|
||||
self.bitrate = r.bits(32)
|
||||
self.sample_rate = r.bits(32)
|
||||
except BitReaderError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
def _parse_esds(self, esds, fileobj):
|
||||
assert esds.name == b"esds"
|
||||
|
||||
ok, data = esds.read(fileobj)
|
||||
if not ok:
|
||||
raise ASEntryError("truncated %s atom" % esds.name)
|
||||
|
||||
try:
|
||||
version, flags, data = parse_full_atom(data)
|
||||
except ValueError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
if version != 0:
|
||||
raise ASEntryError("Unsupported version %d" % version)
|
||||
|
||||
fileobj = cBytesIO(data)
|
||||
r = BitReader(fileobj)
|
||||
|
||||
try:
|
||||
tag = r.bits(8)
|
||||
if tag != ES_Descriptor.TAG:
|
||||
raise ASEntryError("unexpected descriptor: %d" % tag)
|
||||
assert r.is_aligned()
|
||||
except BitReaderError as e:
|
||||
raise ASEntryError(e)
|
||||
|
||||
try:
|
||||
decSpecificInfo = ES_Descriptor.parse(fileobj)
|
||||
except DescriptorError as e:
|
||||
raise ASEntryError(e)
|
||||
dec_conf_desc = decSpecificInfo.decConfigDescr
|
||||
|
||||
self.bitrate = dec_conf_desc.avgBitrate
|
||||
self.codec += dec_conf_desc.codec_param
|
||||
self.codec_description = dec_conf_desc.codec_desc
|
||||
|
||||
decSpecificInfo = dec_conf_desc.decSpecificInfo
|
||||
if decSpecificInfo is not None:
|
||||
if decSpecificInfo.channels != 0:
|
||||
self.channels = decSpecificInfo.channels
|
||||
|
||||
if decSpecificInfo.sample_rate != 0:
|
||||
self.sample_rate = decSpecificInfo.sample_rate
|
||||
|
||||
|
||||
class DescriptorError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class BaseDescriptor(object):
|
||||
|
||||
TAG = None
|
||||
|
||||
@classmethod
|
||||
def _parse_desc_length_file(cls, fileobj):
|
||||
"""May raise ValueError"""
|
||||
|
||||
value = 0
|
||||
for i in xrange(4):
|
||||
try:
|
||||
b = cdata.uint8(fileobj.read(1))
|
||||
except cdata.error as e:
|
||||
raise ValueError(e)
|
||||
value = (value << 7) | (b & 0x7f)
|
||||
if not b >> 7:
|
||||
break
|
||||
else:
|
||||
raise ValueError("invalid descriptor length")
|
||||
|
||||
return value
|
||||
|
||||
@classmethod
|
||||
def parse(cls, fileobj):
|
||||
"""Returns a parsed instance of the called type.
|
||||
The file position is right after the descriptor after this returns.
|
||||
|
||||
Raises DescriptorError
|
||||
"""
|
||||
|
||||
try:
|
||||
length = cls._parse_desc_length_file(fileobj)
|
||||
except ValueError as e:
|
||||
raise DescriptorError(e)
|
||||
pos = fileobj.tell()
|
||||
instance = cls(fileobj, length)
|
||||
left = length - (fileobj.tell() - pos)
|
||||
if left < 0:
|
||||
raise DescriptorError("descriptor parsing read too much data")
|
||||
fileobj.seek(left, 1)
|
||||
return instance
|
||||
|
||||
|
||||
class ES_Descriptor(BaseDescriptor):
|
||||
|
||||
TAG = 0x3
|
||||
|
||||
def __init__(self, fileobj, length):
|
||||
"""Raises DescriptorError"""
|
||||
|
||||
r = BitReader(fileobj)
|
||||
try:
|
||||
self.ES_ID = r.bits(16)
|
||||
self.streamDependenceFlag = r.bits(1)
|
||||
self.URL_Flag = r.bits(1)
|
||||
self.OCRstreamFlag = r.bits(1)
|
||||
self.streamPriority = r.bits(5)
|
||||
if self.streamDependenceFlag:
|
||||
self.dependsOn_ES_ID = r.bits(16)
|
||||
if self.URL_Flag:
|
||||
URLlength = r.bits(8)
|
||||
self.URLstring = r.bytes(URLlength)
|
||||
if self.OCRstreamFlag:
|
||||
self.OCR_ES_Id = r.bits(16)
|
||||
|
||||
tag = r.bits(8)
|
||||
except BitReaderError as e:
|
||||
raise DescriptorError(e)
|
||||
|
||||
if tag != DecoderConfigDescriptor.TAG:
|
||||
raise DescriptorError("unexpected DecoderConfigDescrTag %d" % tag)
|
||||
|
||||
assert r.is_aligned()
|
||||
self.decConfigDescr = DecoderConfigDescriptor.parse(fileobj)
|
||||
|
||||
|
||||
class DecoderConfigDescriptor(BaseDescriptor):
|
||||
|
||||
TAG = 0x4
|
||||
|
||||
decSpecificInfo = None
|
||||
"""A DecoderSpecificInfo, optional"""
|
||||
|
||||
def __init__(self, fileobj, length):
|
||||
"""Raises DescriptorError"""
|
||||
|
||||
r = BitReader(fileobj)
|
||||
|
||||
try:
|
||||
self.objectTypeIndication = r.bits(8)
|
||||
self.streamType = r.bits(6)
|
||||
self.upStream = r.bits(1)
|
||||
self.reserved = r.bits(1)
|
||||
self.bufferSizeDB = r.bits(24)
|
||||
self.maxBitrate = r.bits(32)
|
||||
self.avgBitrate = r.bits(32)
|
||||
|
||||
if (self.objectTypeIndication, self.streamType) != (0x40, 0x5):
|
||||
return
|
||||
|
||||
# all from here is optional
|
||||
if length * 8 == r.get_position():
|
||||
return
|
||||
|
||||
tag = r.bits(8)
|
||||
except BitReaderError as e:
|
||||
raise DescriptorError(e)
|
||||
|
||||
if tag == DecoderSpecificInfo.TAG:
|
||||
assert r.is_aligned()
|
||||
self.decSpecificInfo = DecoderSpecificInfo.parse(fileobj)
|
||||
|
||||
@property
|
||||
def codec_param(self):
|
||||
"""string"""
|
||||
|
||||
param = u".%X" % self.objectTypeIndication
|
||||
info = self.decSpecificInfo
|
||||
if info is not None:
|
||||
param += u".%d" % info.audioObjectType
|
||||
return param
|
||||
|
||||
@property
|
||||
def codec_desc(self):
|
||||
"""string or None"""
|
||||
|
||||
info = self.decSpecificInfo
|
||||
desc = None
|
||||
if info is not None:
|
||||
desc = info.description
|
||||
return desc
|
||||
|
||||
|
||||
class DecoderSpecificInfo(BaseDescriptor):
|
||||
|
||||
TAG = 0x5
|
||||
|
||||
_TYPE_NAMES = [
|
||||
None, "AAC MAIN", "AAC LC", "AAC SSR", "AAC LTP", "SBR",
|
||||
"AAC scalable", "TwinVQ", "CELP", "HVXC", None, None, "TTSI",
|
||||
"Main synthetic", "Wavetable synthesis", "General MIDI",
|
||||
"Algorithmic Synthesis and Audio FX", "ER AAC LC", None, "ER AAC LTP",
|
||||
"ER AAC scalable", "ER Twin VQ", "ER BSAC", "ER AAC LD", "ER CELP",
|
||||
"ER HVXC", "ER HILN", "ER Parametric", "SSC", "PS", "MPEG Surround",
|
||||
None, "Layer-1", "Layer-2", "Layer-3", "DST", "ALS", "SLS",
|
||||
"SLS non-core", "ER AAC ELD", "SMR Simple", "SMR Main", "USAC",
|
||||
"SAOC", "LD MPEG Surround", "USAC"
|
||||
]
|
||||
|
||||
_FREQS = [
|
||||
96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000,
|
||||
12000, 11025, 8000, 7350,
|
||||
]
|
||||
|
||||
@property
|
||||
def description(self):
|
||||
"""string or None if unknown"""
|
||||
|
||||
name = None
|
||||
try:
|
||||
name = self._TYPE_NAMES[self.audioObjectType]
|
||||
except IndexError:
|
||||
pass
|
||||
if name is None:
|
||||
return
|
||||
if self.sbrPresentFlag == 1:
|
||||
name += "+SBR"
|
||||
if self.psPresentFlag == 1:
|
||||
name += "+PS"
|
||||
return text_type(name)
|
||||
|
||||
@property
|
||||
def sample_rate(self):
|
||||
"""0 means unknown"""
|
||||
|
||||
if self.sbrPresentFlag == 1:
|
||||
return self.extensionSamplingFrequency
|
||||
elif self.sbrPresentFlag == 0:
|
||||
return self.samplingFrequency
|
||||
else:
|
||||
# these are all types that support SBR
|
||||
aot_can_sbr = (1, 2, 3, 4, 6, 17, 19, 20, 22)
|
||||
if self.audioObjectType not in aot_can_sbr:
|
||||
return self.samplingFrequency
|
||||
# there shouldn't be SBR for > 48KHz
|
||||
if self.samplingFrequency > 24000:
|
||||
return self.samplingFrequency
|
||||
# either samplingFrequency or samplingFrequency * 2
|
||||
return 0
|
||||
|
||||
@property
|
||||
def channels(self):
|
||||
"""channel count or 0 for unknown"""
|
||||
|
||||
# from ProgramConfigElement()
|
||||
if hasattr(self, "pce_channels"):
|
||||
return self.pce_channels
|
||||
|
||||
conf = getattr(
|
||||
self, "extensionChannelConfiguration", self.channelConfiguration)
|
||||
|
||||
if conf == 1:
|
||||
if self.psPresentFlag == -1:
|
||||
return 0
|
||||
elif self.psPresentFlag == 1:
|
||||
return 2
|
||||
else:
|
||||
return 1
|
||||
elif conf == 7:
|
||||
return 8
|
||||
elif conf > 7:
|
||||
return 0
|
||||
else:
|
||||
return conf
|
||||
|
||||
def _get_audio_object_type(self, r):
|
||||
"""Raises BitReaderError"""
|
||||
|
||||
audioObjectType = r.bits(5)
|
||||
if audioObjectType == 31:
|
||||
audioObjectTypeExt = r.bits(6)
|
||||
audioObjectType = 32 + audioObjectTypeExt
|
||||
return audioObjectType
|
||||
|
||||
def _get_sampling_freq(self, r):
|
||||
"""Raises BitReaderError"""
|
||||
|
||||
samplingFrequencyIndex = r.bits(4)
|
||||
if samplingFrequencyIndex == 0xf:
|
||||
samplingFrequency = r.bits(24)
|
||||
else:
|
||||
try:
|
||||
samplingFrequency = self._FREQS[samplingFrequencyIndex]
|
||||
except IndexError:
|
||||
samplingFrequency = 0
|
||||
return samplingFrequency
|
||||
|
||||
def __init__(self, fileobj, length):
|
||||
"""Raises DescriptorError"""
|
||||
|
||||
r = BitReader(fileobj)
|
||||
try:
|
||||
self._parse(r, length)
|
||||
except BitReaderError as e:
|
||||
raise DescriptorError(e)
|
||||
|
||||
def _parse(self, r, length):
|
||||
"""Raises BitReaderError"""
|
||||
|
||||
def bits_left():
|
||||
return length * 8 - r.get_position()
|
||||
|
||||
self.audioObjectType = self._get_audio_object_type(r)
|
||||
self.samplingFrequency = self._get_sampling_freq(r)
|
||||
self.channelConfiguration = r.bits(4)
|
||||
|
||||
self.sbrPresentFlag = -1
|
||||
self.psPresentFlag = -1
|
||||
if self.audioObjectType in (5, 29):
|
||||
self.extensionAudioObjectType = 5
|
||||
self.sbrPresentFlag = 1
|
||||
if self.audioObjectType == 29:
|
||||
self.psPresentFlag = 1
|
||||
self.extensionSamplingFrequency = self._get_sampling_freq(r)
|
||||
self.audioObjectType = self._get_audio_object_type(r)
|
||||
if self.audioObjectType == 22:
|
||||
self.extensionChannelConfiguration = r.bits(4)
|
||||
else:
|
||||
self.extensionAudioObjectType = 0
|
||||
|
||||
if self.audioObjectType in (1, 2, 3, 4, 6, 7, 17, 19, 20, 21, 22, 23):
|
||||
try:
|
||||
GASpecificConfig(r, self)
|
||||
except NotImplementedError:
|
||||
# unsupported, (warn?)
|
||||
return
|
||||
else:
|
||||
# unsupported
|
||||
return
|
||||
|
||||
if self.audioObjectType in (
|
||||
17, 19, 20, 21, 22, 23, 24, 25, 26, 27, 39):
|
||||
epConfig = r.bits(2)
|
||||
if epConfig in (2, 3):
|
||||
# unsupported
|
||||
return
|
||||
|
||||
if self.extensionAudioObjectType != 5 and bits_left() >= 16:
|
||||
syncExtensionType = r.bits(11)
|
||||
if syncExtensionType == 0x2b7:
|
||||
self.extensionAudioObjectType = self._get_audio_object_type(r)
|
||||
|
||||
if self.extensionAudioObjectType == 5:
|
||||
self.sbrPresentFlag = r.bits(1)
|
||||
if self.sbrPresentFlag == 1:
|
||||
self.extensionSamplingFrequency = \
|
||||
self._get_sampling_freq(r)
|
||||
if bits_left() >= 12:
|
||||
syncExtensionType = r.bits(11)
|
||||
if syncExtensionType == 0x548:
|
||||
self.psPresentFlag = r.bits(1)
|
||||
|
||||
if self.extensionAudioObjectType == 22:
|
||||
self.sbrPresentFlag = r.bits(1)
|
||||
if self.sbrPresentFlag == 1:
|
||||
self.extensionSamplingFrequency = \
|
||||
self._get_sampling_freq(r)
|
||||
self.extensionChannelConfiguration = r.bits(4)
|
||||
|
||||
|
||||
def GASpecificConfig(r, info):
|
||||
"""Reads GASpecificConfig which is needed to get the data after that
|
||||
(there is no length defined to skip it) and to read program_config_element
|
||||
which can contain channel counts.
|
||||
|
||||
May raise BitReaderError on error or
|
||||
NotImplementedError if some reserved data was set.
|
||||
"""
|
||||
|
||||
assert isinstance(info, DecoderSpecificInfo)
|
||||
|
||||
r.skip(1) # frameLengthFlag
|
||||
dependsOnCoreCoder = r.bits(1)
|
||||
if dependsOnCoreCoder:
|
||||
r.skip(14)
|
||||
extensionFlag = r.bits(1)
|
||||
if not info.channelConfiguration:
|
||||
pce = ProgramConfigElement(r)
|
||||
info.pce_channels = pce.channels
|
||||
if info.audioObjectType == 6 or info.audioObjectType == 20:
|
||||
r.skip(3)
|
||||
if extensionFlag:
|
||||
if info.audioObjectType == 22:
|
||||
r.skip(5 + 11)
|
||||
if info.audioObjectType in (17, 19, 20, 23):
|
||||
r.skip(1 + 1 + 1)
|
||||
extensionFlag3 = r.bits(1)
|
||||
if extensionFlag3 != 0:
|
||||
raise NotImplementedError("extensionFlag3 set")
|
||||
|
|
@ -1,194 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen._compat import PY2
|
||||
|
||||
# This is not an exhaustive list of container atoms, but just the
|
||||
# ones this module needs to peek inside.
|
||||
_CONTAINERS = [b"moov", b"udta", b"trak", b"mdia", b"meta", b"ilst",
|
||||
b"stbl", b"minf", b"moof", b"traf"]
|
||||
_SKIP_SIZE = {b"meta": 4}
|
||||
|
||||
|
||||
class AtomError(Exception):
|
||||
pass
|
||||
|
||||
|
||||
class Atom(object):
|
||||
"""An individual atom.
|
||||
|
||||
Attributes:
|
||||
children -- list child atoms (or None for non-container atoms)
|
||||
length -- length of this atom, including length and name
|
||||
datalength = -- length of this atom without length, name
|
||||
name -- four byte name of the atom, as a str
|
||||
offset -- location in the constructor-given fileobj of this atom
|
||||
|
||||
This structure should only be used internally by Mutagen.
|
||||
"""
|
||||
|
||||
children = None
|
||||
|
||||
def __init__(self, fileobj, level=0):
|
||||
"""May raise AtomError"""
|
||||
|
||||
self.offset = fileobj.tell()
|
||||
try:
|
||||
self.length, self.name = struct.unpack(">I4s", fileobj.read(8))
|
||||
except struct.error:
|
||||
raise AtomError("truncated data")
|
||||
self._dataoffset = self.offset + 8
|
||||
if self.length == 1:
|
||||
try:
|
||||
self.length, = struct.unpack(">Q", fileobj.read(8))
|
||||
except struct.error:
|
||||
raise AtomError("truncated data")
|
||||
self._dataoffset += 8
|
||||
if self.length < 16:
|
||||
raise AtomError(
|
||||
"64 bit atom length can only be 16 and higher")
|
||||
elif self.length == 0:
|
||||
if level != 0:
|
||||
raise AtomError(
|
||||
"only a top-level atom can have zero length")
|
||||
# Only the last atom is supposed to have a zero-length, meaning it
|
||||
# extends to the end of file.
|
||||
fileobj.seek(0, 2)
|
||||
self.length = fileobj.tell() - self.offset
|
||||
fileobj.seek(self.offset + 8, 0)
|
||||
elif self.length < 8:
|
||||
raise AtomError(
|
||||
"atom length can only be 0, 1 or 8 and higher")
|
||||
|
||||
if self.name in _CONTAINERS:
|
||||
self.children = []
|
||||
fileobj.seek(_SKIP_SIZE.get(self.name, 0), 1)
|
||||
while fileobj.tell() < self.offset + self.length:
|
||||
self.children.append(Atom(fileobj, level + 1))
|
||||
else:
|
||||
fileobj.seek(self.offset + self.length, 0)
|
||||
|
||||
@property
|
||||
def datalength(self):
|
||||
return self.length - (self._dataoffset - self.offset)
|
||||
|
||||
def read(self, fileobj):
|
||||
"""Return if all data could be read and the atom payload"""
|
||||
|
||||
fileobj.seek(self._dataoffset, 0)
|
||||
data = fileobj.read(self.datalength)
|
||||
return len(data) == self.datalength, data
|
||||
|
||||
@staticmethod
|
||||
def render(name, data):
|
||||
"""Render raw atom data."""
|
||||
# this raises OverflowError if Py_ssize_t can't handle the atom data
|
||||
size = len(data) + 8
|
||||
if size <= 0xFFFFFFFF:
|
||||
return struct.pack(">I4s", size, name) + data
|
||||
else:
|
||||
return struct.pack(">I4sQ", 1, name, size + 8) + data
|
||||
|
||||
def findall(self, name, recursive=False):
|
||||
"""Recursively find all child atoms by specified name."""
|
||||
if self.children is not None:
|
||||
for child in self.children:
|
||||
if child.name == name:
|
||||
yield child
|
||||
if recursive:
|
||||
for atom in child.findall(name, True):
|
||||
yield atom
|
||||
|
||||
def __getitem__(self, remaining):
|
||||
"""Look up a child atom, potentially recursively.
|
||||
|
||||
e.g. atom['udta', 'meta'] => <Atom name='meta' ...>
|
||||
"""
|
||||
if not remaining:
|
||||
return self
|
||||
elif self.children is None:
|
||||
raise KeyError("%r is not a container" % self.name)
|
||||
for child in self.children:
|
||||
if child.name == remaining[0]:
|
||||
return child[remaining[1:]]
|
||||
else:
|
||||
raise KeyError("%r not found" % remaining[0])
|
||||
|
||||
def __repr__(self):
|
||||
cls = self.__class__.__name__
|
||||
if self.children is None:
|
||||
return "<%s name=%r length=%r offset=%r>" % (
|
||||
cls, self.name, self.length, self.offset)
|
||||
else:
|
||||
children = "\n".join([" " + line for child in self.children
|
||||
for line in repr(child).splitlines()])
|
||||
return "<%s name=%r length=%r offset=%r\n%s>" % (
|
||||
cls, self.name, self.length, self.offset, children)
|
||||
|
||||
|
||||
class Atoms(object):
|
||||
"""Root atoms in a given file.
|
||||
|
||||
Attributes:
|
||||
atoms -- a list of top-level atoms as Atom objects
|
||||
|
||||
This structure should only be used internally by Mutagen.
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
self.atoms = []
|
||||
fileobj.seek(0, 2)
|
||||
end = fileobj.tell()
|
||||
fileobj.seek(0)
|
||||
while fileobj.tell() + 8 <= end:
|
||||
self.atoms.append(Atom(fileobj))
|
||||
|
||||
def path(self, *names):
|
||||
"""Look up and return the complete path of an atom.
|
||||
|
||||
For example, atoms.path('moov', 'udta', 'meta') will return a
|
||||
list of three atoms, corresponding to the moov, udta, and meta
|
||||
atoms.
|
||||
"""
|
||||
|
||||
path = [self]
|
||||
for name in names:
|
||||
path.append(path[-1][name, ])
|
||||
return path[1:]
|
||||
|
||||
def __contains__(self, names):
|
||||
try:
|
||||
self[names]
|
||||
except KeyError:
|
||||
return False
|
||||
return True
|
||||
|
||||
def __getitem__(self, names):
|
||||
"""Look up a child atom.
|
||||
|
||||
'names' may be a list of atoms (['moov', 'udta']) or a string
|
||||
specifying the complete path ('moov.udta').
|
||||
"""
|
||||
|
||||
if PY2:
|
||||
if isinstance(names, basestring):
|
||||
names = names.split(b".")
|
||||
else:
|
||||
if isinstance(names, bytes):
|
||||
names = names.split(b".")
|
||||
|
||||
for child in self.atoms:
|
||||
if child.name == names[0]:
|
||||
return child[names[1:]]
|
||||
else:
|
||||
raise KeyError("%r not found" % names[0])
|
||||
|
||||
def __repr__(self):
|
||||
return "\n".join([repr(child) for child in self.atoms])
|
||||
|
|
@ -1,21 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
# Copyright (C) 2014 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
from mutagen._util import cdata
|
||||
|
||||
|
||||
def parse_full_atom(data):
|
||||
"""Some atoms are versioned. Split them up in (version, flags, payload).
|
||||
Can raise ValueError.
|
||||
"""
|
||||
|
||||
if len(data) < 4:
|
||||
raise ValueError("not enough data")
|
||||
|
||||
version = ord(data[0:1])
|
||||
flags = cdata.uint_be(b"\x00" + data[1:4])
|
||||
return version, flags, data[4:]
|
||||
|
|
@ -1,270 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Lukas Lalinsky
|
||||
# Copyright (C) 2012 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Musepack audio streams with APEv2 tags.
|
||||
|
||||
Musepack is an audio format originally based on the MPEG-1 Layer-2
|
||||
algorithms. Stream versions 4 through 7 are supported.
|
||||
|
||||
For more information, see http://www.musepack.net/.
|
||||
"""
|
||||
|
||||
__all__ = ["Musepack", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from ._compat import endswith, xrange
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.apev2 import APEv2File, error, delete
|
||||
from mutagen.id3 import BitPaddedInt
|
||||
from mutagen._util import cdata
|
||||
|
||||
|
||||
class MusepackHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
RATES = [44100, 48000, 37800, 32000]
|
||||
|
||||
|
||||
def _parse_sv8_int(fileobj, limit=9):
|
||||
"""Reads (max limit) bytes from fileobj until the MSB is zero.
|
||||
All 7 LSB will be merged to a big endian uint.
|
||||
|
||||
Raises ValueError in case not MSB is zero, or EOFError in
|
||||
case the file ended before limit is reached.
|
||||
|
||||
Returns (parsed number, number of bytes read)
|
||||
"""
|
||||
|
||||
num = 0
|
||||
for i in xrange(limit):
|
||||
c = fileobj.read(1)
|
||||
if len(c) != 1:
|
||||
raise EOFError
|
||||
c = bytearray(c)
|
||||
num = (num << 7) | (c[0] & 0x7F)
|
||||
if not c[0] & 0x80:
|
||||
return num, i + 1
|
||||
if limit > 0:
|
||||
raise ValueError
|
||||
return 0, 0
|
||||
|
||||
|
||||
def _calc_sv8_gain(gain):
|
||||
# 64.82 taken from mpcdec
|
||||
return 64.82 - gain / 256.0
|
||||
|
||||
|
||||
def _calc_sv8_peak(peak):
|
||||
return (10 ** (peak / (256.0 * 20.0)) / 65535.0)
|
||||
|
||||
|
||||
class MusepackInfo(StreamInfo):
|
||||
"""Musepack stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* channels -- number of audio channels
|
||||
* length -- file length in seconds, as a float
|
||||
* sample_rate -- audio sampling rate in Hz
|
||||
* bitrate -- audio bitrate, in bits per second
|
||||
* version -- Musepack stream version
|
||||
|
||||
Optional Attributes:
|
||||
|
||||
* title_gain, title_peak -- Replay Gain and peak data for this song
|
||||
* album_gain, album_peak -- Replay Gain and peak data for this album
|
||||
|
||||
These attributes are only available in stream version 7/8. The
|
||||
gains are a float, +/- some dB. The peaks are a percentage [0..1] of
|
||||
the maximum amplitude. This means to get a number comparable to
|
||||
VorbisGain, you must multiply the peak by 2.
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
header = fileobj.read(4)
|
||||
if len(header) != 4:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
|
||||
# Skip ID3v2 tags
|
||||
if header[:3] == b"ID3":
|
||||
header = fileobj.read(6)
|
||||
if len(header) != 6:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
size = 10 + BitPaddedInt(header[2:6])
|
||||
fileobj.seek(size)
|
||||
header = fileobj.read(4)
|
||||
if len(header) != 4:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
|
||||
if header.startswith(b"MPCK"):
|
||||
self.__parse_sv8(fileobj)
|
||||
else:
|
||||
self.__parse_sv467(fileobj)
|
||||
|
||||
if not self.bitrate and self.length != 0:
|
||||
fileobj.seek(0, 2)
|
||||
self.bitrate = int(round(fileobj.tell() * 8 / self.length))
|
||||
|
||||
def __parse_sv8(self, fileobj):
|
||||
# SV8 http://trac.musepack.net/trac/wiki/SV8Specification
|
||||
|
||||
key_size = 2
|
||||
mandatory_packets = [b"SH", b"RG"]
|
||||
|
||||
def check_frame_key(key):
|
||||
if ((len(frame_type) != key_size) or
|
||||
(not b'AA' <= frame_type <= b'ZZ')):
|
||||
raise MusepackHeaderError("Invalid frame key.")
|
||||
|
||||
frame_type = fileobj.read(key_size)
|
||||
check_frame_key(frame_type)
|
||||
|
||||
while frame_type not in (b"AP", b"SE") and mandatory_packets:
|
||||
try:
|
||||
frame_size, slen = _parse_sv8_int(fileobj)
|
||||
except (EOFError, ValueError):
|
||||
raise MusepackHeaderError("Invalid packet size.")
|
||||
data_size = frame_size - key_size - slen
|
||||
# packets can be at maximum data_size big and are padded with zeros
|
||||
|
||||
if frame_type == b"SH":
|
||||
mandatory_packets.remove(frame_type)
|
||||
self.__parse_stream_header(fileobj, data_size)
|
||||
elif frame_type == b"RG":
|
||||
mandatory_packets.remove(frame_type)
|
||||
self.__parse_replaygain_packet(fileobj, data_size)
|
||||
else:
|
||||
fileobj.seek(data_size, 1)
|
||||
|
||||
frame_type = fileobj.read(key_size)
|
||||
check_frame_key(frame_type)
|
||||
|
||||
if mandatory_packets:
|
||||
raise MusepackHeaderError("Missing mandatory packets: %s." %
|
||||
", ".join(map(repr, mandatory_packets)))
|
||||
|
||||
self.length = float(self.samples) / self.sample_rate
|
||||
self.bitrate = 0
|
||||
|
||||
def __parse_stream_header(self, fileobj, data_size):
|
||||
# skip CRC
|
||||
fileobj.seek(4, 1)
|
||||
remaining_size = data_size - 4
|
||||
|
||||
try:
|
||||
self.version = bytearray(fileobj.read(1))[0]
|
||||
except TypeError:
|
||||
raise MusepackHeaderError("SH packet ended unexpectedly.")
|
||||
|
||||
remaining_size -= 1
|
||||
|
||||
try:
|
||||
samples, l1 = _parse_sv8_int(fileobj)
|
||||
samples_skip, l2 = _parse_sv8_int(fileobj)
|
||||
except (EOFError, ValueError):
|
||||
raise MusepackHeaderError(
|
||||
"SH packet: Invalid sample counts.")
|
||||
|
||||
self.samples = samples - samples_skip
|
||||
remaining_size -= l1 + l2
|
||||
|
||||
data = fileobj.read(remaining_size)
|
||||
if len(data) != remaining_size:
|
||||
raise MusepackHeaderError("SH packet ended unexpectedly.")
|
||||
self.sample_rate = RATES[bytearray(data)[0] >> 5]
|
||||
self.channels = (bytearray(data)[1] >> 4) + 1
|
||||
|
||||
def __parse_replaygain_packet(self, fileobj, data_size):
|
||||
data = fileobj.read(data_size)
|
||||
if data_size < 9:
|
||||
raise MusepackHeaderError("Invalid RG packet size.")
|
||||
if len(data) != data_size:
|
||||
raise MusepackHeaderError("RG packet ended unexpectedly.")
|
||||
title_gain = cdata.short_be(data[1:3])
|
||||
title_peak = cdata.short_be(data[3:5])
|
||||
album_gain = cdata.short_be(data[5:7])
|
||||
album_peak = cdata.short_be(data[7:9])
|
||||
if title_gain:
|
||||
self.title_gain = _calc_sv8_gain(title_gain)
|
||||
if title_peak:
|
||||
self.title_peak = _calc_sv8_peak(title_peak)
|
||||
if album_gain:
|
||||
self.album_gain = _calc_sv8_gain(album_gain)
|
||||
if album_peak:
|
||||
self.album_peak = _calc_sv8_peak(album_peak)
|
||||
|
||||
def __parse_sv467(self, fileobj):
|
||||
fileobj.seek(-4, 1)
|
||||
header = fileobj.read(32)
|
||||
if len(header) != 32:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
|
||||
# SV7
|
||||
if header.startswith(b"MP+"):
|
||||
self.version = bytearray(header)[3] & 0xF
|
||||
if self.version < 7:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
frames = cdata.uint_le(header[4:8])
|
||||
flags = cdata.uint_le(header[8:12])
|
||||
|
||||
self.title_peak, self.title_gain = struct.unpack(
|
||||
"<Hh", header[12:16])
|
||||
self.album_peak, self.album_gain = struct.unpack(
|
||||
"<Hh", header[16:20])
|
||||
self.title_gain /= 100.0
|
||||
self.album_gain /= 100.0
|
||||
self.title_peak /= 65535.0
|
||||
self.album_peak /= 65535.0
|
||||
|
||||
self.sample_rate = RATES[(flags >> 16) & 0x0003]
|
||||
self.bitrate = 0
|
||||
# SV4-SV6
|
||||
else:
|
||||
header_dword = cdata.uint_le(header[0:4])
|
||||
self.version = (header_dword >> 11) & 0x03FF
|
||||
if self.version < 4 or self.version > 6:
|
||||
raise MusepackHeaderError("not a Musepack file")
|
||||
self.bitrate = (header_dword >> 23) & 0x01FF
|
||||
self.sample_rate = 44100
|
||||
if self.version >= 5:
|
||||
frames = cdata.uint_le(header[4:8])
|
||||
else:
|
||||
frames = cdata.ushort_le(header[6:8])
|
||||
if self.version < 6:
|
||||
frames -= 1
|
||||
self.channels = 2
|
||||
self.length = float(frames * 1152 - 576) / self.sample_rate
|
||||
|
||||
def pprint(self):
|
||||
rg_data = []
|
||||
if hasattr(self, "title_gain"):
|
||||
rg_data.append(u"%+0.2f (title)" % self.title_gain)
|
||||
if hasattr(self, "album_gain"):
|
||||
rg_data.append(u"%+0.2f (album)" % self.album_gain)
|
||||
rg_data = (rg_data and ", Gain: " + ", ".join(rg_data)) or ""
|
||||
|
||||
return u"Musepack SV%d, %.2f seconds, %d Hz, %d bps%s" % (
|
||||
self.version, self.length, self.sample_rate, self.bitrate, rg_data)
|
||||
|
||||
|
||||
class Musepack(APEv2File):
|
||||
_Info = MusepackInfo
|
||||
_mimes = ["audio/x-musepack", "audio/x-mpc"]
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
filename = filename.lower()
|
||||
|
||||
return (header.startswith(b"MP+") + header.startswith(b"MPCK") +
|
||||
endswith(filename, b".mpc"))
|
||||
|
||||
|
||||
Open = Musepack
|
||||
|
|
@ -1,548 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg bitstreams and pages.
|
||||
|
||||
This module reads and writes a subset of the Ogg bitstream format
|
||||
version 0. It does *not* read or write Ogg Vorbis files! For that,
|
||||
you should use mutagen.oggvorbis.
|
||||
|
||||
This implementation is based on the RFC 3533 standard found at
|
||||
http://www.xiph.org/ogg/doc/rfc3533.txt.
|
||||
"""
|
||||
|
||||
import struct
|
||||
import sys
|
||||
import zlib
|
||||
|
||||
from mutagen import FileType
|
||||
from mutagen._util import cdata, resize_bytes, MutagenError
|
||||
from ._compat import cBytesIO, reraise, chr_, izip, xrange
|
||||
|
||||
|
||||
class error(IOError, MutagenError):
|
||||
"""Ogg stream parsing errors."""
|
||||
|
||||
pass
|
||||
|
||||
|
||||
class OggPage(object):
|
||||
"""A single Ogg page (not necessarily a single encoded packet).
|
||||
|
||||
A page is a header of 26 bytes, followed by the length of the
|
||||
data, followed by the data.
|
||||
|
||||
The constructor is givin a file-like object pointing to the start
|
||||
of an Ogg page. After the constructor is finished it is pointing
|
||||
to the start of the next page.
|
||||
|
||||
Attributes:
|
||||
|
||||
* version -- stream structure version (currently always 0)
|
||||
* position -- absolute stream position (default -1)
|
||||
* serial -- logical stream serial number (default 0)
|
||||
* sequence -- page sequence number within logical stream (default 0)
|
||||
* offset -- offset this page was read from (default None)
|
||||
* complete -- if the last packet on this page is complete (default True)
|
||||
* packets -- list of raw packet data (default [])
|
||||
|
||||
Note that if 'complete' is false, the next page's 'continued'
|
||||
property must be true (so set both when constructing pages).
|
||||
|
||||
If a file-like object is supplied to the constructor, the above
|
||||
attributes will be filled in based on it.
|
||||
"""
|
||||
|
||||
version = 0
|
||||
__type_flags = 0
|
||||
position = 0
|
||||
serial = 0
|
||||
sequence = 0
|
||||
offset = None
|
||||
complete = True
|
||||
|
||||
def __init__(self, fileobj=None):
|
||||
self.packets = []
|
||||
|
||||
if fileobj is None:
|
||||
return
|
||||
|
||||
self.offset = fileobj.tell()
|
||||
|
||||
header = fileobj.read(27)
|
||||
if len(header) == 0:
|
||||
raise EOFError
|
||||
|
||||
try:
|
||||
(oggs, self.version, self.__type_flags,
|
||||
self.position, self.serial, self.sequence,
|
||||
crc, segments) = struct.unpack("<4sBBqIIiB", header)
|
||||
except struct.error:
|
||||
raise error("unable to read full header; got %r" % header)
|
||||
|
||||
if oggs != b"OggS":
|
||||
raise error("read %r, expected %r, at 0x%x" % (
|
||||
oggs, b"OggS", fileobj.tell() - 27))
|
||||
|
||||
if self.version != 0:
|
||||
raise error("version %r unsupported" % self.version)
|
||||
|
||||
total = 0
|
||||
lacings = []
|
||||
lacing_bytes = fileobj.read(segments)
|
||||
if len(lacing_bytes) != segments:
|
||||
raise error("unable to read %r lacing bytes" % segments)
|
||||
for c in bytearray(lacing_bytes):
|
||||
total += c
|
||||
if c < 255:
|
||||
lacings.append(total)
|
||||
total = 0
|
||||
if total:
|
||||
lacings.append(total)
|
||||
self.complete = False
|
||||
|
||||
self.packets = [fileobj.read(l) for l in lacings]
|
||||
if [len(p) for p in self.packets] != lacings:
|
||||
raise error("unable to read full data")
|
||||
|
||||
def __eq__(self, other):
|
||||
"""Two Ogg pages are the same if they write the same data."""
|
||||
try:
|
||||
return (self.write() == other.write())
|
||||
except AttributeError:
|
||||
return False
|
||||
|
||||
__hash__ = object.__hash__
|
||||
|
||||
def __repr__(self):
|
||||
attrs = ['version', 'position', 'serial', 'sequence', 'offset',
|
||||
'complete', 'continued', 'first', 'last']
|
||||
values = ["%s=%r" % (attr, getattr(self, attr)) for attr in attrs]
|
||||
return "<%s %s, %d bytes in %d packets>" % (
|
||||
type(self).__name__, " ".join(values), sum(map(len, self.packets)),
|
||||
len(self.packets))
|
||||
|
||||
def write(self):
|
||||
"""Return a string encoding of the page header and data.
|
||||
|
||||
A ValueError is raised if the data is too big to fit in a
|
||||
single page.
|
||||
"""
|
||||
|
||||
data = [
|
||||
struct.pack("<4sBBqIIi", b"OggS", self.version, self.__type_flags,
|
||||
self.position, self.serial, self.sequence, 0)
|
||||
]
|
||||
|
||||
lacing_data = []
|
||||
for datum in self.packets:
|
||||
quot, rem = divmod(len(datum), 255)
|
||||
lacing_data.append(b"\xff" * quot + chr_(rem))
|
||||
lacing_data = b"".join(lacing_data)
|
||||
if not self.complete and lacing_data.endswith(b"\x00"):
|
||||
lacing_data = lacing_data[:-1]
|
||||
data.append(chr_(len(lacing_data)))
|
||||
data.append(lacing_data)
|
||||
data.extend(self.packets)
|
||||
data = b"".join(data)
|
||||
|
||||
# Python's CRC is swapped relative to Ogg's needs.
|
||||
# crc32 returns uint prior to py2.6 on some platforms, so force uint
|
||||
crc = (~zlib.crc32(data.translate(cdata.bitswap), -1)) & 0xffffffff
|
||||
# Although we're using to_uint_be, this actually makes the CRC
|
||||
# a proper le integer, since Python's CRC is byteswapped.
|
||||
crc = cdata.to_uint_be(crc).translate(cdata.bitswap)
|
||||
data = data[:22] + crc + data[26:]
|
||||
return data
|
||||
|
||||
@property
|
||||
def size(self):
|
||||
"""Total frame size."""
|
||||
|
||||
size = 27 # Initial header size
|
||||
for datum in self.packets:
|
||||
quot, rem = divmod(len(datum), 255)
|
||||
size += quot + 1
|
||||
if not self.complete and rem == 0:
|
||||
# Packet contains a multiple of 255 bytes and is not
|
||||
# terminated, so we don't have a \x00 at the end.
|
||||
size -= 1
|
||||
size += sum(map(len, self.packets))
|
||||
return size
|
||||
|
||||
def __set_flag(self, bit, val):
|
||||
mask = 1 << bit
|
||||
if val:
|
||||
self.__type_flags |= mask
|
||||
else:
|
||||
self.__type_flags &= ~mask
|
||||
|
||||
continued = property(
|
||||
lambda self: cdata.test_bit(self.__type_flags, 0),
|
||||
lambda self, v: self.__set_flag(0, v),
|
||||
doc="The first packet is continued from the previous page.")
|
||||
|
||||
first = property(
|
||||
lambda self: cdata.test_bit(self.__type_flags, 1),
|
||||
lambda self, v: self.__set_flag(1, v),
|
||||
doc="This is the first page of a logical bitstream.")
|
||||
|
||||
last = property(
|
||||
lambda self: cdata.test_bit(self.__type_flags, 2),
|
||||
lambda self, v: self.__set_flag(2, v),
|
||||
doc="This is the last page of a logical bitstream.")
|
||||
|
||||
@staticmethod
|
||||
def renumber(fileobj, serial, start):
|
||||
"""Renumber pages belonging to a specified logical stream.
|
||||
|
||||
fileobj must be opened with mode r+b or w+b.
|
||||
|
||||
Starting at page number 'start', renumber all pages belonging
|
||||
to logical stream 'serial'. Other pages will be ignored.
|
||||
|
||||
fileobj must point to the start of a valid Ogg page; any
|
||||
occuring after it and part of the specified logical stream
|
||||
will be numbered. No adjustment will be made to the data in
|
||||
the pages nor the granule position; only the page number, and
|
||||
so also the CRC.
|
||||
|
||||
If an error occurs (e.g. non-Ogg data is found), fileobj will
|
||||
be left pointing to the place in the stream the error occured,
|
||||
but the invalid data will be left intact (since this function
|
||||
does not change the total file size).
|
||||
"""
|
||||
|
||||
number = start
|
||||
while True:
|
||||
try:
|
||||
page = OggPage(fileobj)
|
||||
except EOFError:
|
||||
break
|
||||
else:
|
||||
if page.serial != serial:
|
||||
# Wrong stream, skip this page.
|
||||
continue
|
||||
# Changing the number can't change the page size,
|
||||
# so seeking back based on the current size is safe.
|
||||
fileobj.seek(-page.size, 1)
|
||||
page.sequence = number
|
||||
fileobj.write(page.write())
|
||||
fileobj.seek(page.offset + page.size, 0)
|
||||
number += 1
|
||||
|
||||
@staticmethod
|
||||
def to_packets(pages, strict=False):
|
||||
"""Construct a list of packet data from a list of Ogg pages.
|
||||
|
||||
If strict is true, the first page must start a new packet,
|
||||
and the last page must end the last packet.
|
||||
"""
|
||||
|
||||
serial = pages[0].serial
|
||||
sequence = pages[0].sequence
|
||||
packets = []
|
||||
|
||||
if strict:
|
||||
if pages[0].continued:
|
||||
raise ValueError("first packet is continued")
|
||||
if not pages[-1].complete:
|
||||
raise ValueError("last packet does not complete")
|
||||
elif pages and pages[0].continued:
|
||||
packets.append([b""])
|
||||
|
||||
for page in pages:
|
||||
if serial != page.serial:
|
||||
raise ValueError("invalid serial number in %r" % page)
|
||||
elif sequence != page.sequence:
|
||||
raise ValueError("bad sequence number in %r" % page)
|
||||
else:
|
||||
sequence += 1
|
||||
|
||||
if page.continued:
|
||||
packets[-1].append(page.packets[0])
|
||||
else:
|
||||
packets.append([page.packets[0]])
|
||||
packets.extend([p] for p in page.packets[1:])
|
||||
|
||||
return [b"".join(p) for p in packets]
|
||||
|
||||
@classmethod
|
||||
def _from_packets_try_preserve(cls, packets, old_pages):
|
||||
"""Like from_packets but in case the size and number of the packets
|
||||
is the same as in the given pages the layout of the pages will
|
||||
be copied (the page size and number will match).
|
||||
|
||||
If the packets don't match this behaves like::
|
||||
|
||||
OggPage.from_packets(packets, sequence=old_pages[0].sequence)
|
||||
"""
|
||||
|
||||
old_packets = cls.to_packets(old_pages)
|
||||
|
||||
if [len(p) for p in packets] != [len(p) for p in old_packets]:
|
||||
# doesn't match, fall back
|
||||
return cls.from_packets(packets, old_pages[0].sequence)
|
||||
|
||||
new_data = b"".join(packets)
|
||||
new_pages = []
|
||||
for old in old_pages:
|
||||
new = OggPage()
|
||||
new.sequence = old.sequence
|
||||
new.complete = old.complete
|
||||
new.continued = old.continued
|
||||
new.position = old.position
|
||||
for p in old.packets:
|
||||
data, new_data = new_data[:len(p)], new_data[len(p):]
|
||||
new.packets.append(data)
|
||||
new_pages.append(new)
|
||||
assert not new_data
|
||||
|
||||
return new_pages
|
||||
|
||||
@staticmethod
|
||||
def from_packets(packets, sequence=0, default_size=4096,
|
||||
wiggle_room=2048):
|
||||
"""Construct a list of Ogg pages from a list of packet data.
|
||||
|
||||
The algorithm will generate pages of approximately
|
||||
default_size in size (rounded down to the nearest multiple of
|
||||
255). However, it will also allow pages to increase to
|
||||
approximately default_size + wiggle_room if allowing the
|
||||
wiggle room would finish a packet (only one packet will be
|
||||
finished in this way per page; if the next packet would fit
|
||||
into the wiggle room, it still starts on a new page).
|
||||
|
||||
This method reduces packet fragmentation when packet sizes are
|
||||
slightly larger than the default page size, while still
|
||||
ensuring most pages are of the average size.
|
||||
|
||||
Pages are numbered started at 'sequence'; other information is
|
||||
uninitialized.
|
||||
"""
|
||||
|
||||
chunk_size = (default_size // 255) * 255
|
||||
|
||||
pages = []
|
||||
|
||||
page = OggPage()
|
||||
page.sequence = sequence
|
||||
|
||||
for packet in packets:
|
||||
page.packets.append(b"")
|
||||
while packet:
|
||||
data, packet = packet[:chunk_size], packet[chunk_size:]
|
||||
if page.size < default_size and len(page.packets) < 255:
|
||||
page.packets[-1] += data
|
||||
else:
|
||||
# If we've put any packet data into this page yet,
|
||||
# we need to mark it incomplete. However, we can
|
||||
# also have just started this packet on an already
|
||||
# full page, in which case, just start the new
|
||||
# page with this packet.
|
||||
if page.packets[-1]:
|
||||
page.complete = False
|
||||
if len(page.packets) == 1:
|
||||
page.position = -1
|
||||
else:
|
||||
page.packets.pop(-1)
|
||||
pages.append(page)
|
||||
page = OggPage()
|
||||
page.continued = not pages[-1].complete
|
||||
page.sequence = pages[-1].sequence + 1
|
||||
page.packets.append(data)
|
||||
|
||||
if len(packet) < wiggle_room:
|
||||
page.packets[-1] += packet
|
||||
packet = b""
|
||||
|
||||
if page.packets:
|
||||
pages.append(page)
|
||||
|
||||
return pages
|
||||
|
||||
@classmethod
|
||||
def replace(cls, fileobj, old_pages, new_pages):
|
||||
"""Replace old_pages with new_pages within fileobj.
|
||||
|
||||
old_pages must have come from reading fileobj originally.
|
||||
new_pages are assumed to have the 'same' data as old_pages,
|
||||
and so the serial and sequence numbers will be copied, as will
|
||||
the flags for the first and last pages.
|
||||
|
||||
fileobj will be resized and pages renumbered as necessary. As
|
||||
such, it must be opened r+b or w+b.
|
||||
"""
|
||||
|
||||
if not len(old_pages) or not len(new_pages):
|
||||
raise ValueError("empty pages list not allowed")
|
||||
|
||||
# Number the new pages starting from the first old page.
|
||||
first = old_pages[0].sequence
|
||||
for page, seq in izip(new_pages,
|
||||
xrange(first, first + len(new_pages))):
|
||||
page.sequence = seq
|
||||
page.serial = old_pages[0].serial
|
||||
|
||||
new_pages[0].first = old_pages[0].first
|
||||
new_pages[0].last = old_pages[0].last
|
||||
new_pages[0].continued = old_pages[0].continued
|
||||
|
||||
new_pages[-1].first = old_pages[-1].first
|
||||
new_pages[-1].last = old_pages[-1].last
|
||||
new_pages[-1].complete = old_pages[-1].complete
|
||||
if not new_pages[-1].complete and len(new_pages[-1].packets) == 1:
|
||||
new_pages[-1].position = -1
|
||||
|
||||
new_data = [cls.write(p) for p in new_pages]
|
||||
|
||||
# Add dummy data or merge the remaining data together so multiple
|
||||
# new pages replace an old one
|
||||
pages_diff = len(old_pages) - len(new_data)
|
||||
if pages_diff > 0:
|
||||
new_data.extend([b""] * pages_diff)
|
||||
elif pages_diff < 0:
|
||||
new_data[pages_diff - 1:] = [b"".join(new_data[pages_diff - 1:])]
|
||||
|
||||
# Replace pages one by one. If the sizes match no resize happens.
|
||||
offset_adjust = 0
|
||||
new_data_end = None
|
||||
assert len(old_pages) == len(new_data)
|
||||
for old_page, data in izip(old_pages, new_data):
|
||||
offset = old_page.offset + offset_adjust
|
||||
data_size = len(data)
|
||||
resize_bytes(fileobj, old_page.size, data_size, offset)
|
||||
fileobj.seek(offset, 0)
|
||||
fileobj.write(data)
|
||||
new_data_end = offset + data_size
|
||||
offset_adjust += (data_size - old_page.size)
|
||||
|
||||
# Finally, if there's any discrepency in length, we need to
|
||||
# renumber the pages for the logical stream.
|
||||
if len(old_pages) != len(new_pages):
|
||||
fileobj.seek(new_data_end, 0)
|
||||
serial = new_pages[-1].serial
|
||||
sequence = new_pages[-1].sequence + 1
|
||||
cls.renumber(fileobj, serial, sequence)
|
||||
|
||||
@staticmethod
|
||||
def find_last(fileobj, serial):
|
||||
"""Find the last page of the stream 'serial'.
|
||||
|
||||
If the file is not multiplexed this function is fast. If it is,
|
||||
it must read the whole the stream.
|
||||
|
||||
This finds the last page in the actual file object, or the last
|
||||
page in the stream (with eos set), whichever comes first.
|
||||
"""
|
||||
|
||||
# For non-muxed streams, look at the last page.
|
||||
try:
|
||||
fileobj.seek(-256 * 256, 2)
|
||||
except IOError:
|
||||
# The file is less than 64k in length.
|
||||
fileobj.seek(0)
|
||||
data = fileobj.read()
|
||||
try:
|
||||
index = data.rindex(b"OggS")
|
||||
except ValueError:
|
||||
raise error("unable to find final Ogg header")
|
||||
bytesobj = cBytesIO(data[index:])
|
||||
best_page = None
|
||||
try:
|
||||
page = OggPage(bytesobj)
|
||||
except error:
|
||||
pass
|
||||
else:
|
||||
if page.serial == serial:
|
||||
if page.last:
|
||||
return page
|
||||
else:
|
||||
best_page = page
|
||||
else:
|
||||
best_page = None
|
||||
|
||||
# The stream is muxed, so use the slow way.
|
||||
fileobj.seek(0)
|
||||
try:
|
||||
page = OggPage(fileobj)
|
||||
while not page.last:
|
||||
page = OggPage(fileobj)
|
||||
while page.serial != serial:
|
||||
page = OggPage(fileobj)
|
||||
best_page = page
|
||||
return page
|
||||
except error:
|
||||
return best_page
|
||||
except EOFError:
|
||||
return best_page
|
||||
|
||||
|
||||
class OggFileType(FileType):
|
||||
"""An generic Ogg file."""
|
||||
|
||||
_Info = None
|
||||
_Tags = None
|
||||
_Error = None
|
||||
_mimes = ["application/ogg", "application/x-ogg"]
|
||||
|
||||
def load(self, filename):
|
||||
"""Load file information from a filename."""
|
||||
|
||||
self.filename = filename
|
||||
with open(filename, "rb") as fileobj:
|
||||
try:
|
||||
self.info = self._Info(fileobj)
|
||||
self.tags = self._Tags(fileobj, self.info)
|
||||
self.info._post_tags(fileobj)
|
||||
except error as e:
|
||||
reraise(self._Error, e, sys.exc_info()[2])
|
||||
except EOFError:
|
||||
raise self._Error("no appropriate stream found")
|
||||
|
||||
def delete(self, filename=None):
|
||||
"""Remove tags from a file.
|
||||
|
||||
If no filename is given, the one most recently loaded is used.
|
||||
"""
|
||||
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
|
||||
self.tags.clear()
|
||||
# TODO: we should delegate the deletion to the subclass and not through
|
||||
# _inject.
|
||||
with open(filename, "rb+") as fileobj:
|
||||
try:
|
||||
self.tags._inject(fileobj, lambda x: 0)
|
||||
except error as e:
|
||||
reraise(self._Error, e, sys.exc_info()[2])
|
||||
except EOFError:
|
||||
raise self._Error("no appropriate stream found")
|
||||
|
||||
def add_tags(self):
|
||||
raise self._Error
|
||||
|
||||
def save(self, filename=None, padding=None):
|
||||
"""Save a tag to a file.
|
||||
|
||||
If no filename is given, the one most recently loaded is used.
|
||||
"""
|
||||
|
||||
if filename is None:
|
||||
filename = self.filename
|
||||
fileobj = open(filename, "rb+")
|
||||
try:
|
||||
try:
|
||||
self.tags._inject(fileobj, padding)
|
||||
except error as e:
|
||||
reraise(self._Error, e, sys.exc_info()[2])
|
||||
except EOFError:
|
||||
raise self._Error("no appropriate stream found")
|
||||
finally:
|
||||
fileobj.close()
|
||||
|
|
@ -1,161 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg FLAC comments.
|
||||
|
||||
This module handles FLAC files wrapped in an Ogg bitstream. The first
|
||||
FLAC stream found is used. For 'naked' FLACs, see mutagen.flac.
|
||||
|
||||
This module is based off the specification at
|
||||
http://flac.sourceforge.net/ogg_mapping.html.
|
||||
"""
|
||||
|
||||
__all__ = ["OggFLAC", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from ._compat import cBytesIO
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.flac import StreamInfo as FLACStreamInfo, error as FLACError
|
||||
from mutagen._vorbis import VCommentDict
|
||||
from mutagen.ogg import OggPage, OggFileType, error as OggError
|
||||
|
||||
|
||||
class error(OggError):
|
||||
pass
|
||||
|
||||
|
||||
class OggFLACHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OggFLACStreamInfo(StreamInfo):
|
||||
"""Ogg FLAC stream info."""
|
||||
|
||||
length = 0
|
||||
"""File length in seconds, as a float"""
|
||||
|
||||
channels = 0
|
||||
"""Number of channels"""
|
||||
|
||||
sample_rate = 0
|
||||
"""Sample rate in Hz"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x7FFLAC"):
|
||||
page = OggPage(fileobj)
|
||||
major, minor, self.packets, flac = struct.unpack(
|
||||
">BBH4s", page.packets[0][5:13])
|
||||
if flac != b"fLaC":
|
||||
raise OggFLACHeaderError("invalid FLAC marker (%r)" % flac)
|
||||
elif (major, minor) != (1, 0):
|
||||
raise OggFLACHeaderError(
|
||||
"unknown mapping version: %d.%d" % (major, minor))
|
||||
self.serial = page.serial
|
||||
|
||||
# Skip over the block header.
|
||||
stringobj = cBytesIO(page.packets[0][17:])
|
||||
|
||||
try:
|
||||
flac_info = FLACStreamInfo(stringobj)
|
||||
except FLACError as e:
|
||||
raise OggFLACHeaderError(e)
|
||||
|
||||
for attr in ["min_blocksize", "max_blocksize", "sample_rate",
|
||||
"channels", "bits_per_sample", "total_samples", "length"]:
|
||||
setattr(self, attr, getattr(flac_info, attr))
|
||||
|
||||
def _post_tags(self, fileobj):
|
||||
if self.length:
|
||||
return
|
||||
page = OggPage.find_last(fileobj, self.serial)
|
||||
self.length = page.position / float(self.sample_rate)
|
||||
|
||||
def pprint(self):
|
||||
return u"Ogg FLAC, %.2f seconds, %d Hz" % (
|
||||
self.length, self.sample_rate)
|
||||
|
||||
|
||||
class OggFLACVComment(VCommentDict):
|
||||
|
||||
def __init__(self, fileobj, info):
|
||||
# data should be pointing at the start of an Ogg page, after
|
||||
# the first FLAC page.
|
||||
pages = []
|
||||
complete = False
|
||||
while not complete:
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == info.serial:
|
||||
pages.append(page)
|
||||
complete = page.complete or (len(page.packets) > 1)
|
||||
comment = cBytesIO(OggPage.to_packets(pages)[0][4:])
|
||||
super(OggFLACVComment, self).__init__(comment, framing=False)
|
||||
|
||||
def _inject(self, fileobj, padding_func):
|
||||
"""Write tag data into the FLAC Vorbis comment packet/page."""
|
||||
|
||||
# Ogg FLAC has no convenient data marker like Vorbis, but the
|
||||
# second packet - and second page - must be the comment data.
|
||||
fileobj.seek(0)
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x7FFLAC"):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
first_page = page
|
||||
while not (page.sequence == 1 and page.serial == first_page.serial):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
old_pages = [page]
|
||||
while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == first_page.serial:
|
||||
old_pages.append(page)
|
||||
|
||||
packets = OggPage.to_packets(old_pages, strict=False)
|
||||
|
||||
# Set the new comment block.
|
||||
data = self.write(framing=False)
|
||||
data = packets[0][:1] + struct.pack(">I", len(data))[-3:] + data
|
||||
packets[0] = data
|
||||
|
||||
new_pages = OggPage.from_packets(packets, old_pages[0].sequence)
|
||||
OggPage.replace(fileobj, old_pages, new_pages)
|
||||
|
||||
|
||||
class OggFLAC(OggFileType):
|
||||
"""An Ogg FLAC file."""
|
||||
|
||||
_Info = OggFLACStreamInfo
|
||||
_Tags = OggFLACVComment
|
||||
_Error = OggFLACHeaderError
|
||||
_mimes = ["audio/x-oggflac"]
|
||||
|
||||
info = None
|
||||
"""A `OggFLACStreamInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
def save(self, filename=None):
|
||||
return super(OggFLAC, self).save(filename)
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"OggS") * (
|
||||
(b"FLAC" in header) + (b"fLaC" in header)))
|
||||
|
||||
|
||||
Open = OggFLAC
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
OggFLAC(filename).delete()
|
||||
|
|
@ -1,158 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2012, 2013 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg Opus comments.
|
||||
|
||||
This module handles Opus files wrapped in an Ogg bitstream. The
|
||||
first Opus stream found is used.
|
||||
|
||||
Based on http://tools.ietf.org/html/draft-terriberry-oggopus-01
|
||||
"""
|
||||
|
||||
__all__ = ["OggOpus", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._compat import BytesIO
|
||||
from mutagen._util import get_size
|
||||
from mutagen._tags import PaddingInfo
|
||||
from mutagen._vorbis import VCommentDict
|
||||
from mutagen.ogg import OggPage, OggFileType, error as OggError
|
||||
|
||||
|
||||
class error(OggError):
|
||||
pass
|
||||
|
||||
|
||||
class OggOpusHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OggOpusInfo(StreamInfo):
|
||||
"""Ogg Opus stream information."""
|
||||
|
||||
length = 0
|
||||
"""File length in seconds, as a float"""
|
||||
|
||||
channels = 0
|
||||
"""Number of channels"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"OpusHead"):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
self.serial = page.serial
|
||||
|
||||
if not page.first:
|
||||
raise OggOpusHeaderError(
|
||||
"page has ID header, but doesn't start a stream")
|
||||
|
||||
(version, self.channels, pre_skip, orig_sample_rate, output_gain,
|
||||
channel_map) = struct.unpack("<BBHIhB", page.packets[0][8:19])
|
||||
|
||||
self.__pre_skip = pre_skip
|
||||
|
||||
# only the higher 4 bits change on incombatible changes
|
||||
major = version >> 4
|
||||
if major != 0:
|
||||
raise OggOpusHeaderError("version %r unsupported" % major)
|
||||
|
||||
def _post_tags(self, fileobj):
|
||||
page = OggPage.find_last(fileobj, self.serial)
|
||||
self.length = (page.position - self.__pre_skip) / float(48000)
|
||||
|
||||
def pprint(self):
|
||||
return u"Ogg Opus, %.2f seconds" % (self.length)
|
||||
|
||||
|
||||
class OggOpusVComment(VCommentDict):
|
||||
"""Opus comments embedded in an Ogg bitstream."""
|
||||
|
||||
def __get_comment_pages(self, fileobj, info):
|
||||
# find the first tags page with the right serial
|
||||
page = OggPage(fileobj)
|
||||
while ((info.serial != page.serial) or
|
||||
not page.packets[0].startswith(b"OpusTags")):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
# get all comment pages
|
||||
pages = [page]
|
||||
while not (pages[-1].complete or len(pages[-1].packets) > 1):
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == pages[0].serial:
|
||||
pages.append(page)
|
||||
|
||||
return pages
|
||||
|
||||
def __init__(self, fileobj, info):
|
||||
pages = self.__get_comment_pages(fileobj, info)
|
||||
data = OggPage.to_packets(pages)[0][8:] # Strip OpusTags
|
||||
fileobj = BytesIO(data)
|
||||
super(OggOpusVComment, self).__init__(fileobj, framing=False)
|
||||
self._padding = len(data) - self._size
|
||||
|
||||
# in case the LSB of the first byte after v-comment is 1, preserve the
|
||||
# following data
|
||||
padding_flag = fileobj.read(1)
|
||||
if padding_flag and ord(padding_flag) & 0x1:
|
||||
self._pad_data = padding_flag + fileobj.read()
|
||||
self._padding = 0 # we have to preserve, so no padding
|
||||
else:
|
||||
self._pad_data = b""
|
||||
|
||||
def _inject(self, fileobj, padding_func):
|
||||
fileobj.seek(0)
|
||||
info = OggOpusInfo(fileobj)
|
||||
old_pages = self.__get_comment_pages(fileobj, info)
|
||||
|
||||
packets = OggPage.to_packets(old_pages)
|
||||
vcomment_data = b"OpusTags" + self.write(framing=False)
|
||||
|
||||
if self._pad_data:
|
||||
# if we have padding data to preserver we can't add more padding
|
||||
# as long as we don't know the structure of what follows
|
||||
packets[0] = vcomment_data + self._pad_data
|
||||
else:
|
||||
content_size = get_size(fileobj) - len(packets[0]) # approx
|
||||
padding_left = len(packets[0]) - len(vcomment_data)
|
||||
info = PaddingInfo(padding_left, content_size)
|
||||
new_padding = info._get_padding(padding_func)
|
||||
packets[0] = vcomment_data + b"\x00" * new_padding
|
||||
|
||||
new_pages = OggPage._from_packets_try_preserve(packets, old_pages)
|
||||
OggPage.replace(fileobj, old_pages, new_pages)
|
||||
|
||||
|
||||
class OggOpus(OggFileType):
|
||||
"""An Ogg Opus file."""
|
||||
|
||||
_Info = OggOpusInfo
|
||||
_Tags = OggOpusVComment
|
||||
_Error = OggOpusHeaderError
|
||||
_mimes = ["audio/ogg", "audio/ogg; codecs=opus"]
|
||||
|
||||
info = None
|
||||
"""A `OggOpusInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"OggS") * (b"OpusHead" in header))
|
||||
|
||||
|
||||
Open = OggOpus
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
OggOpus(filename).delete()
|
||||
|
|
@ -1,154 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg Speex comments.
|
||||
|
||||
This module handles Speex files wrapped in an Ogg bitstream. The
|
||||
first Speex stream found is used.
|
||||
|
||||
Read more about Ogg Speex at http://www.speex.org/. This module is
|
||||
based on the specification at http://www.speex.org/manual2/node7.html
|
||||
and clarifications after personal communication with Jean-Marc,
|
||||
http://lists.xiph.org/pipermail/speex-dev/2006-July/004676.html.
|
||||
"""
|
||||
|
||||
__all__ = ["OggSpeex", "Open", "delete"]
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._vorbis import VCommentDict
|
||||
from mutagen.ogg import OggPage, OggFileType, error as OggError
|
||||
from mutagen._util import cdata, get_size
|
||||
from mutagen._tags import PaddingInfo
|
||||
|
||||
|
||||
class error(OggError):
|
||||
pass
|
||||
|
||||
|
||||
class OggSpeexHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OggSpeexInfo(StreamInfo):
|
||||
"""Ogg Speex stream information."""
|
||||
|
||||
length = 0
|
||||
"""file length in seconds, as a float"""
|
||||
|
||||
channels = 0
|
||||
"""number of channels"""
|
||||
|
||||
bitrate = 0
|
||||
"""nominal bitrate in bits per second.
|
||||
|
||||
The reference encoder does not set the bitrate; in this case,
|
||||
the bitrate will be 0.
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"Speex "):
|
||||
page = OggPage(fileobj)
|
||||
if not page.first:
|
||||
raise OggSpeexHeaderError(
|
||||
"page has ID header, but doesn't start a stream")
|
||||
self.sample_rate = cdata.uint_le(page.packets[0][36:40])
|
||||
self.channels = cdata.uint_le(page.packets[0][48:52])
|
||||
self.bitrate = max(0, cdata.int_le(page.packets[0][52:56]))
|
||||
self.serial = page.serial
|
||||
|
||||
def _post_tags(self, fileobj):
|
||||
page = OggPage.find_last(fileobj, self.serial)
|
||||
self.length = page.position / float(self.sample_rate)
|
||||
|
||||
def pprint(self):
|
||||
return u"Ogg Speex, %.2f seconds" % self.length
|
||||
|
||||
|
||||
class OggSpeexVComment(VCommentDict):
|
||||
"""Speex comments embedded in an Ogg bitstream."""
|
||||
|
||||
def __init__(self, fileobj, info):
|
||||
pages = []
|
||||
complete = False
|
||||
while not complete:
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == info.serial:
|
||||
pages.append(page)
|
||||
complete = page.complete or (len(page.packets) > 1)
|
||||
data = OggPage.to_packets(pages)[0]
|
||||
super(OggSpeexVComment, self).__init__(data, framing=False)
|
||||
self._padding = len(data) - self._size
|
||||
|
||||
def _inject(self, fileobj, padding_func):
|
||||
"""Write tag data into the Speex comment packet/page."""
|
||||
|
||||
fileobj.seek(0)
|
||||
|
||||
# Find the first header page, with the stream info.
|
||||
# Use it to get the serial number.
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"Speex "):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
# Look for the next page with that serial number, it'll start
|
||||
# the comment packet.
|
||||
serial = page.serial
|
||||
page = OggPage(fileobj)
|
||||
while page.serial != serial:
|
||||
page = OggPage(fileobj)
|
||||
|
||||
# Then find all the pages with the comment packet.
|
||||
old_pages = [page]
|
||||
while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == old_pages[0].serial:
|
||||
old_pages.append(page)
|
||||
|
||||
packets = OggPage.to_packets(old_pages, strict=False)
|
||||
|
||||
content_size = get_size(fileobj) - len(packets[0]) # approx
|
||||
vcomment_data = self.write(framing=False)
|
||||
padding_left = len(packets[0]) - len(vcomment_data)
|
||||
|
||||
info = PaddingInfo(padding_left, content_size)
|
||||
new_padding = info._get_padding(padding_func)
|
||||
|
||||
# Set the new comment packet.
|
||||
packets[0] = vcomment_data + b"\x00" * new_padding
|
||||
|
||||
new_pages = OggPage._from_packets_try_preserve(packets, old_pages)
|
||||
OggPage.replace(fileobj, old_pages, new_pages)
|
||||
|
||||
|
||||
class OggSpeex(OggFileType):
|
||||
"""An Ogg Speex file."""
|
||||
|
||||
_Info = OggSpeexInfo
|
||||
_Tags = OggSpeexVComment
|
||||
_Error = OggSpeexHeaderError
|
||||
_mimes = ["audio/x-speex"]
|
||||
|
||||
info = None
|
||||
"""A `OggSpeexInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"OggS") * (b"Speex " in header))
|
||||
|
||||
|
||||
Open = OggSpeex
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
OggSpeex(filename).delete()
|
||||
|
|
@ -1,148 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg Theora comments.
|
||||
|
||||
This module handles Theora files wrapped in an Ogg bitstream. The
|
||||
first Theora stream found is used.
|
||||
|
||||
Based on the specification at http://theora.org/doc/Theora_I_spec.pdf.
|
||||
"""
|
||||
|
||||
__all__ = ["OggTheora", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._vorbis import VCommentDict
|
||||
from mutagen._util import cdata, get_size
|
||||
from mutagen._tags import PaddingInfo
|
||||
from mutagen.ogg import OggPage, OggFileType, error as OggError
|
||||
|
||||
|
||||
class error(OggError):
|
||||
pass
|
||||
|
||||
|
||||
class OggTheoraHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OggTheoraInfo(StreamInfo):
|
||||
"""Ogg Theora stream information."""
|
||||
|
||||
length = 0
|
||||
"""File length in seconds, as a float"""
|
||||
|
||||
fps = 0
|
||||
"""Video frames per second, as a float"""
|
||||
|
||||
bitrate = 0
|
||||
"""Bitrate in bps (int)"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x80theora"):
|
||||
page = OggPage(fileobj)
|
||||
if not page.first:
|
||||
raise OggTheoraHeaderError(
|
||||
"page has ID header, but doesn't start a stream")
|
||||
data = page.packets[0]
|
||||
vmaj, vmin = struct.unpack("2B", data[7:9])
|
||||
if (vmaj, vmin) != (3, 2):
|
||||
raise OggTheoraHeaderError(
|
||||
"found Theora version %d.%d != 3.2" % (vmaj, vmin))
|
||||
fps_num, fps_den = struct.unpack(">2I", data[22:30])
|
||||
self.fps = fps_num / float(fps_den)
|
||||
self.bitrate = cdata.uint_be(b"\x00" + data[37:40])
|
||||
self.granule_shift = (cdata.ushort_be(data[40:42]) >> 5) & 0x1F
|
||||
self.serial = page.serial
|
||||
|
||||
def _post_tags(self, fileobj):
|
||||
page = OggPage.find_last(fileobj, self.serial)
|
||||
position = page.position
|
||||
mask = (1 << self.granule_shift) - 1
|
||||
frames = (position >> self.granule_shift) + (position & mask)
|
||||
self.length = frames / float(self.fps)
|
||||
|
||||
def pprint(self):
|
||||
return u"Ogg Theora, %.2f seconds, %d bps" % (self.length,
|
||||
self.bitrate)
|
||||
|
||||
|
||||
class OggTheoraCommentDict(VCommentDict):
|
||||
"""Theora comments embedded in an Ogg bitstream."""
|
||||
|
||||
def __init__(self, fileobj, info):
|
||||
pages = []
|
||||
complete = False
|
||||
while not complete:
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == info.serial:
|
||||
pages.append(page)
|
||||
complete = page.complete or (len(page.packets) > 1)
|
||||
data = OggPage.to_packets(pages)[0][7:]
|
||||
super(OggTheoraCommentDict, self).__init__(data, framing=False)
|
||||
self._padding = len(data) - self._size
|
||||
|
||||
def _inject(self, fileobj, padding_func):
|
||||
"""Write tag data into the Theora comment packet/page."""
|
||||
|
||||
fileobj.seek(0)
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x81theora"):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
old_pages = [page]
|
||||
while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == old_pages[0].serial:
|
||||
old_pages.append(page)
|
||||
|
||||
packets = OggPage.to_packets(old_pages, strict=False)
|
||||
|
||||
content_size = get_size(fileobj) - len(packets[0]) # approx
|
||||
vcomment_data = b"\x81theora" + self.write(framing=False)
|
||||
padding_left = len(packets[0]) - len(vcomment_data)
|
||||
|
||||
info = PaddingInfo(padding_left, content_size)
|
||||
new_padding = info._get_padding(padding_func)
|
||||
|
||||
packets[0] = vcomment_data + b"\x00" * new_padding
|
||||
|
||||
new_pages = OggPage._from_packets_try_preserve(packets, old_pages)
|
||||
OggPage.replace(fileobj, old_pages, new_pages)
|
||||
|
||||
|
||||
class OggTheora(OggFileType):
|
||||
"""An Ogg Theora file."""
|
||||
|
||||
_Info = OggTheoraInfo
|
||||
_Tags = OggTheoraCommentDict
|
||||
_Error = OggTheoraHeaderError
|
||||
_mimes = ["video/x-theora"]
|
||||
|
||||
info = None
|
||||
"""A `OggTheoraInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"OggS") *
|
||||
((b"\x80theora" in header) + (b"\x81theora" in header)) * 2)
|
||||
|
||||
|
||||
Open = OggTheora
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
OggTheora(filename).delete()
|
||||
|
|
@ -1,159 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""Read and write Ogg Vorbis comments.
|
||||
|
||||
This module handles Vorbis files wrapped in an Ogg bitstream. The
|
||||
first Vorbis stream found is used.
|
||||
|
||||
Read more about Ogg Vorbis at http://vorbis.com/. This module is based
|
||||
on the specification at http://www.xiph.org/vorbis/doc/Vorbis_I_spec.html.
|
||||
"""
|
||||
|
||||
__all__ = ["OggVorbis", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen._vorbis import VCommentDict
|
||||
from mutagen._util import get_size
|
||||
from mutagen._tags import PaddingInfo
|
||||
from mutagen.ogg import OggPage, OggFileType, error as OggError
|
||||
|
||||
|
||||
class error(OggError):
|
||||
pass
|
||||
|
||||
|
||||
class OggVorbisHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OggVorbisInfo(StreamInfo):
|
||||
"""Ogg Vorbis stream information."""
|
||||
|
||||
length = 0
|
||||
"""File length in seconds, as a float"""
|
||||
|
||||
channels = 0
|
||||
"""Number of channels"""
|
||||
|
||||
bitrate = 0
|
||||
"""Nominal ('average') bitrate in bits per second, as an int"""
|
||||
|
||||
sample_rate = 0
|
||||
"""Sample rate in Hz"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x01vorbis"):
|
||||
page = OggPage(fileobj)
|
||||
if not page.first:
|
||||
raise OggVorbisHeaderError(
|
||||
"page has ID header, but doesn't start a stream")
|
||||
(self.channels, self.sample_rate, max_bitrate, nominal_bitrate,
|
||||
min_bitrate) = struct.unpack("<B4i", page.packets[0][11:28])
|
||||
self.serial = page.serial
|
||||
|
||||
max_bitrate = max(0, max_bitrate)
|
||||
min_bitrate = max(0, min_bitrate)
|
||||
nominal_bitrate = max(0, nominal_bitrate)
|
||||
|
||||
if nominal_bitrate == 0:
|
||||
self.bitrate = (max_bitrate + min_bitrate) // 2
|
||||
elif max_bitrate and max_bitrate < nominal_bitrate:
|
||||
# If the max bitrate is less than the nominal, we know
|
||||
# the nominal is wrong.
|
||||
self.bitrate = max_bitrate
|
||||
elif min_bitrate > nominal_bitrate:
|
||||
self.bitrate = min_bitrate
|
||||
else:
|
||||
self.bitrate = nominal_bitrate
|
||||
|
||||
def _post_tags(self, fileobj):
|
||||
page = OggPage.find_last(fileobj, self.serial)
|
||||
self.length = page.position / float(self.sample_rate)
|
||||
|
||||
def pprint(self):
|
||||
return u"Ogg Vorbis, %.2f seconds, %d bps" % (
|
||||
self.length, self.bitrate)
|
||||
|
||||
|
||||
class OggVCommentDict(VCommentDict):
|
||||
"""Vorbis comments embedded in an Ogg bitstream."""
|
||||
|
||||
def __init__(self, fileobj, info):
|
||||
pages = []
|
||||
complete = False
|
||||
while not complete:
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == info.serial:
|
||||
pages.append(page)
|
||||
complete = page.complete or (len(page.packets) > 1)
|
||||
data = OggPage.to_packets(pages)[0][7:] # Strip off "\x03vorbis".
|
||||
super(OggVCommentDict, self).__init__(data)
|
||||
self._padding = len(data) - self._size
|
||||
|
||||
def _inject(self, fileobj, padding_func):
|
||||
"""Write tag data into the Vorbis comment packet/page."""
|
||||
|
||||
# Find the old pages in the file; we'll need to remove them,
|
||||
# plus grab any stray setup packet data out of them.
|
||||
fileobj.seek(0)
|
||||
page = OggPage(fileobj)
|
||||
while not page.packets[0].startswith(b"\x03vorbis"):
|
||||
page = OggPage(fileobj)
|
||||
|
||||
old_pages = [page]
|
||||
while not (old_pages[-1].complete or len(old_pages[-1].packets) > 1):
|
||||
page = OggPage(fileobj)
|
||||
if page.serial == old_pages[0].serial:
|
||||
old_pages.append(page)
|
||||
|
||||
packets = OggPage.to_packets(old_pages, strict=False)
|
||||
|
||||
content_size = get_size(fileobj) - len(packets[0]) # approx
|
||||
vcomment_data = b"\x03vorbis" + self.write()
|
||||
padding_left = len(packets[0]) - len(vcomment_data)
|
||||
|
||||
info = PaddingInfo(padding_left, content_size)
|
||||
new_padding = info._get_padding(padding_func)
|
||||
|
||||
# Set the new comment packet.
|
||||
packets[0] = vcomment_data + b"\x00" * new_padding
|
||||
|
||||
new_pages = OggPage._from_packets_try_preserve(packets, old_pages)
|
||||
OggPage.replace(fileobj, old_pages, new_pages)
|
||||
|
||||
|
||||
class OggVorbis(OggFileType):
|
||||
"""An Ogg Vorbis file."""
|
||||
|
||||
_Info = OggVorbisInfo
|
||||
_Tags = OggVCommentDict
|
||||
_Error = OggVorbisHeaderError
|
||||
_mimes = ["audio/vorbis", "audio/x-vorbis"]
|
||||
|
||||
info = None
|
||||
"""A `OggVorbisInfo`"""
|
||||
|
||||
tags = None
|
||||
"""A `VCommentDict`"""
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"OggS") * (b"\x01vorbis" in header))
|
||||
|
||||
|
||||
Open = OggVorbis
|
||||
|
||||
|
||||
def delete(filename):
|
||||
"""Remove tags from a file."""
|
||||
|
||||
OggVorbis(filename).delete()
|
||||
|
|
@ -1,74 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Lukas Lalinsky
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""OptimFROG audio streams with APEv2 tags.
|
||||
|
||||
OptimFROG is a lossless audio compression program. Its main goal is to
|
||||
reduce at maximum the size of audio files, while permitting bit
|
||||
identical restoration for all input. It is similar with the ZIP
|
||||
compression, but it is highly specialized to compress audio data.
|
||||
|
||||
Only versions 4.5 and higher are supported.
|
||||
|
||||
For more information, see http://www.losslessaudio.org/
|
||||
"""
|
||||
|
||||
__all__ = ["OptimFROG", "Open", "delete"]
|
||||
|
||||
import struct
|
||||
|
||||
from ._compat import endswith
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.apev2 import APEv2File, error, delete
|
||||
|
||||
|
||||
class OptimFROGHeaderError(error):
|
||||
pass
|
||||
|
||||
|
||||
class OptimFROGInfo(StreamInfo):
|
||||
"""OptimFROG stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* channels - number of audio channels
|
||||
* length - file length in seconds, as a float
|
||||
* sample_rate - audio sampling rate in Hz
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
header = fileobj.read(76)
|
||||
if (len(header) != 76 or not header.startswith(b"OFR ") or
|
||||
struct.unpack("<I", header[4:8])[0] not in [12, 15]):
|
||||
raise OptimFROGHeaderError("not an OptimFROG file")
|
||||
(total_samples, total_samples_high, sample_type, self.channels,
|
||||
self.sample_rate) = struct.unpack("<IHBBI", header[8:20])
|
||||
total_samples += total_samples_high << 32
|
||||
self.channels += 1
|
||||
if self.sample_rate:
|
||||
self.length = float(total_samples) / (self.channels *
|
||||
self.sample_rate)
|
||||
else:
|
||||
self.length = 0.0
|
||||
|
||||
def pprint(self):
|
||||
return u"OptimFROG, %.2f seconds, %d Hz" % (self.length,
|
||||
self.sample_rate)
|
||||
|
||||
|
||||
class OptimFROG(APEv2File):
|
||||
_Info = OptimFROGInfo
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
filename = filename.lower()
|
||||
|
||||
return (header.startswith(b"OFR") + endswith(filename, b".ofr") +
|
||||
endswith(filename, b".ofs"))
|
||||
|
||||
Open = OptimFROG
|
||||
|
|
@ -1,84 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright (C) 2006 Joe Wreschnig
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of version 2 of the GNU General Public License as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""True Audio audio stream information and tags.
|
||||
|
||||
True Audio is a lossless format designed for real-time encoding and
|
||||
decoding. This module is based on the documentation at
|
||||
http://www.true-audio.com/TTA_Lossless_Audio_Codec\_-_Format_Description
|
||||
|
||||
True Audio files use ID3 tags.
|
||||
"""
|
||||
|
||||
__all__ = ["TrueAudio", "Open", "delete", "EasyTrueAudio"]
|
||||
|
||||
from ._compat import endswith
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.id3 import ID3FileType, delete
|
||||
from mutagen._util import cdata, MutagenError
|
||||
|
||||
|
||||
class error(RuntimeError, MutagenError):
|
||||
pass
|
||||
|
||||
|
||||
class TrueAudioHeaderError(error, IOError):
|
||||
pass
|
||||
|
||||
|
||||
class TrueAudioInfo(StreamInfo):
|
||||
"""True Audio stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* length - audio length, in seconds
|
||||
* sample_rate - audio sample rate, in Hz
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj, offset):
|
||||
fileobj.seek(offset or 0)
|
||||
header = fileobj.read(18)
|
||||
if len(header) != 18 or not header.startswith(b"TTA"):
|
||||
raise TrueAudioHeaderError("TTA header not found")
|
||||
self.sample_rate = cdata.int_le(header[10:14])
|
||||
samples = cdata.uint_le(header[14:18])
|
||||
self.length = float(samples) / self.sample_rate
|
||||
|
||||
def pprint(self):
|
||||
return u"True Audio, %.2f seconds, %d Hz." % (
|
||||
self.length, self.sample_rate)
|
||||
|
||||
|
||||
class TrueAudio(ID3FileType):
|
||||
"""A True Audio file.
|
||||
|
||||
:ivar info: :class:`TrueAudioInfo`
|
||||
:ivar tags: :class:`ID3 <mutagen.id3.ID3>`
|
||||
"""
|
||||
|
||||
_Info = TrueAudioInfo
|
||||
_mimes = ["audio/x-tta"]
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return (header.startswith(b"ID3") + header.startswith(b"TTA") +
|
||||
endswith(filename.lower(), b".tta") * 2)
|
||||
|
||||
|
||||
Open = TrueAudio
|
||||
|
||||
|
||||
class EasyTrueAudio(TrueAudio):
|
||||
"""Like MP3, but uses EasyID3 for tags.
|
||||
|
||||
:ivar info: :class:`TrueAudioInfo`
|
||||
:ivar tags: :class:`EasyID3 <mutagen.easyid3.EasyID3>`
|
||||
"""
|
||||
|
||||
from mutagen.easyid3 import EasyID3 as ID3
|
||||
ID3 = ID3
|
||||
|
|
@ -1,125 +0,0 @@
|
|||
# -*- coding: utf-8 -*-
|
||||
|
||||
# Copyright 2006 Joe Wreschnig
|
||||
# 2014 Christoph Reiter
|
||||
#
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License version 2 as
|
||||
# published by the Free Software Foundation.
|
||||
|
||||
"""WavPack reading and writing.
|
||||
|
||||
WavPack is a lossless format that uses APEv2 tags. Read
|
||||
|
||||
* http://www.wavpack.com/
|
||||
* http://www.wavpack.com/file_format.txt
|
||||
|
||||
for more information.
|
||||
"""
|
||||
|
||||
__all__ = ["WavPack", "Open", "delete"]
|
||||
|
||||
from mutagen import StreamInfo
|
||||
from mutagen.apev2 import APEv2File, error, delete
|
||||
from mutagen._util import cdata
|
||||
|
||||
|
||||
class WavPackHeaderError(error):
|
||||
pass
|
||||
|
||||
RATES = [6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000, 32000, 44100,
|
||||
48000, 64000, 88200, 96000, 192000]
|
||||
|
||||
|
||||
class _WavPackHeader(object):
|
||||
|
||||
def __init__(self, block_size, version, track_no, index_no, total_samples,
|
||||
block_index, block_samples, flags, crc):
|
||||
|
||||
self.block_size = block_size
|
||||
self.version = version
|
||||
self.track_no = track_no
|
||||
self.index_no = index_no
|
||||
self.total_samples = total_samples
|
||||
self.block_index = block_index
|
||||
self.block_samples = block_samples
|
||||
self.flags = flags
|
||||
self.crc = crc
|
||||
|
||||
@classmethod
|
||||
def from_fileobj(cls, fileobj):
|
||||
"""A new _WavPackHeader or raises WavPackHeaderError"""
|
||||
|
||||
header = fileobj.read(32)
|
||||
if len(header) != 32 or not header.startswith(b"wvpk"):
|
||||
raise WavPackHeaderError("not a WavPack header: %r" % header)
|
||||
|
||||
block_size = cdata.uint_le(header[4:8])
|
||||
version = cdata.ushort_le(header[8:10])
|
||||
track_no = ord(header[10:11])
|
||||
index_no = ord(header[11:12])
|
||||
samples = cdata.uint_le(header[12:16])
|
||||
if samples == 2 ** 32 - 1:
|
||||
samples = -1
|
||||
block_index = cdata.uint_le(header[16:20])
|
||||
block_samples = cdata.uint_le(header[20:24])
|
||||
flags = cdata.uint_le(header[24:28])
|
||||
crc = cdata.uint_le(header[28:32])
|
||||
|
||||
return _WavPackHeader(block_size, version, track_no, index_no,
|
||||
samples, block_index, block_samples, flags, crc)
|
||||
|
||||
|
||||
class WavPackInfo(StreamInfo):
|
||||
"""WavPack stream information.
|
||||
|
||||
Attributes:
|
||||
|
||||
* channels - number of audio channels (1 or 2)
|
||||
* length - file length in seconds, as a float
|
||||
* sample_rate - audio sampling rate in Hz
|
||||
* version - WavPack stream version
|
||||
"""
|
||||
|
||||
def __init__(self, fileobj):
|
||||
try:
|
||||
header = _WavPackHeader.from_fileobj(fileobj)
|
||||
except WavPackHeaderError:
|
||||
raise WavPackHeaderError("not a WavPack file")
|
||||
|
||||
self.version = header.version
|
||||
self.channels = bool(header.flags & 4) or 2
|
||||
self.sample_rate = RATES[(header.flags >> 23) & 0xF]
|
||||
|
||||
if header.total_samples == -1 or header.block_index != 0:
|
||||
# TODO: we could make this faster by using the tag size
|
||||
# and search backwards for the last block, then do
|
||||
# last.block_index + last.block_samples - initial.block_index
|
||||
samples = header.block_samples
|
||||
while 1:
|
||||
fileobj.seek(header.block_size - 32 + 8, 1)
|
||||
try:
|
||||
header = _WavPackHeader.from_fileobj(fileobj)
|
||||
except WavPackHeaderError:
|
||||
break
|
||||
samples += header.block_samples
|
||||
else:
|
||||
samples = header.total_samples
|
||||
|
||||
self.length = float(samples) / self.sample_rate
|
||||
|
||||
def pprint(self):
|
||||
return u"WavPack, %.2f seconds, %d Hz" % (self.length,
|
||||
self.sample_rate)
|
||||
|
||||
|
||||
class WavPack(APEv2File):
|
||||
_Info = WavPackInfo
|
||||
_mimes = ["audio/x-wavpack"]
|
||||
|
||||
@staticmethod
|
||||
def score(filename, fileobj, header):
|
||||
return header.startswith(b"wvpk") * 2
|
||||
|
||||
|
||||
Open = WavPack
|
||||
Loading…
Reference in a new issue