def set_metadata(self, metadata):
"""takes a MetaData object and sets this track's metadata
this metadata includes track name, album name, and so on
raises IOError if unable to write the file"""
from audiotools.id3 import ID3v22Comment
if metadata is None:
return self.delete_metadata()
elif self.get_metadata() is not None:
# current file has metadata, so replace it with new metadata
self.update_metadata(ID3v22Comment.converted(metadata))
else:
# current file has no metadata, so append new ID3 block
import os
from audiotools.bitstream import BitstreamRecorder
from audiotools import transfer_data, TemporaryFile
if not os.access(self.filename, os.W_OK):
raise IOError(self.filename)
# turn our ID3v2.2 tag into a raw binary chunk
id3_chunk = BitstreamRecorder(0)
ID3v22Comment.converted(metadata).build(id3_chunk)
# generate a temporary AIFF file in which our new ID3v2.2 chunk
# is appended to the file's set of chunks
new_aiff = TemporaryFile(self.filename)
self.__class__.aiff_from_chunks(
new_aiff, [c for c in self.chunks()] +
[AIFF_Chunk(b"ID3 ", id3_chunk.bytes(), id3_chunk.data())])
new_aiff.close()
def get_metadata(self):
"""returns a MetaData object, or None
raises IOError if unable to read the file"""
from audiotools.bitstream import BitstreamReader
from audiotools.id3 import ID3v22Comment
for chunk in self.chunks():
if (chunk.id == 'ID3 '):
return ID3v22Comment.parse(BitstreamReader(chunk.data(), 0))
else:
return None
def get_metadata(self):
"""returns a MetaData object, or None
raises IOError if unable to read the file"""
from audiotools.bitstream import BitstreamReader
from audiotools.id3 import ID3v22Comment
for chunk in self.chunks():
if (chunk.id == 'ID3 '):
return ID3v22Comment.parse(BitstreamReader(chunk.data(), 0))
else:
return None
def set_metadata(self, metadata):
"""takes a MetaData object and sets this track's metadata
this metadata includes track name, album name, and so on
raises IOError if unable to write the file"""
from audiotools.id3 import ID3v22Comment
if metadata is None:
return self.delete_metadata()
elif self.get_metadata() is not None:
# current file has metadata, so replace it with new metadata
self.update_metadata(ID3v22Comment.converted(metadata))
else:
# current file has no metadata, so append new ID3 block
import os
from audiotools.bitstream import BitstreamRecorder
from audiotools import transfer_data, TemporaryFile
if not os.access(self.filename, os.W_OK):
raise IOError(self.filename)
# turn our ID3v2.2 tag into a raw binary chunk
id3_chunk = BitstreamRecorder(0)
ID3v22Comment.converted(metadata).build(id3_chunk)
# generate a temporary AIFF file in which our new ID3v2.2 chunk
# is appended to the file's set of chunks
new_aiff = TemporaryFile(self.filename)
self.__class__.aiff_from_chunks(
new_aiff,
[c for c in self.chunks()] + [AIFF_Chunk(b"ID3 ",
id3_chunk.bytes(),
id3_chunk.data())])
new_aiff.close()
