def _pre_load_header(self, fileobj):
fileobj.seek(0)
id3_location = DSDChunk(fileobj).offset_metdata_chunk
if id3_location == 0:
raise ID3NoHeaderError("File has no existing ID3 tag")
fileobj.seek(id3_location)
def _pre_load_header(self, fileobj):
try:
fileobj.seek(IFFFile(fileobj)[u'ID3'].data_offset)
except (InvalidChunk, KeyError):
raise ID3NoHeaderError("No ID3 chunk")
