/usr/lib/pypy/dist-packages/mutagen/asf/__init__.py is in pypy-mutagen 1.36-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# 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, Tags, StreamInfo
from mutagen._util import resize_bytes, DictMixin, loadfile, convert_error
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):
"""ASFInfo()
ASF stream information.
Attributes:
length (`float`): "Length in seconds
sample_rate (`int`): Sample rate in Hz
bitrate (`int`): Bitrate in bps
channels (`int`): Number of channels
codec_type (`mutagen.text`): Name of the codec type of the first
audio stream or an empty string if unknown. Example:
``Windows Media Audio 9 Standard``
codec_name (`mutagen.text`): Name and maybe version of the codec used.
Example: ``Windows Media Audio 9.1``
codec_description (`mutagen.text`): Further information on the codec
used. Example: ``64 kbps, 48 kHz, stereo 2-pass CBR``
"""
length = 0.0
sample_rate = 0
bitrate = 0
channels = 0
codec_type = u""
codec_name = u""
codec_description = u""
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:
text: a stream information text summary
"""
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, Tags):
"""ASFTags()
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):
"""ASF(filething)
An ASF file, probably containing WMA or WMV.
Arguments:
filething (filething)
Attributes:
info (`ASFInfo`)
tags (`ASFTags`)
"""
_mimes = ["audio/x-ms-wma", "audio/x-ms-wmv", "video/x-ms-asf",
"audio/x-wma", "video/x-wmv"]
info = None
tags = None
@convert_error(IOError, error)
@loadfile()
def load(self, filething):
"""load(filething)
Args:
filething (filething)
Raises:
mutagen.MutagenError
"""
fileobj = filething.fileobj
self.info = ASFInfo()
self.tags = ASFTags()
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
@convert_error(IOError, error)
@loadfile(writable=True)
def save(self, filething, padding=None):
"""save(filething=None, padding=None)
Save tag changes back to the loaded file.
Args:
filething (filething)
padding (PaddingFunction)
Raises:
mutagen.MutagenError
"""
# 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())
fileobj = filething.fileobj
# Render to file
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
@loadfile(writable=True)
def delete(self, filething):
"""delete(filething=None)
Args:
filething (filething)
Raises:
mutagen.MutagenError
"""
self.tags.clear()
self.save(filething, padding=lambda x: 0)
@staticmethod
def score(filename, fileobj, header):
return header.startswith(HeaderObject.GUID) * 2
Open = ASF
|