def parse_object(self, fileptr, identifier):
if not identifier[:3].isalnum():
return None
size_field = fileptr.read(4)
size = get_chunk_size(size_field)
chunk = fileptr.read(size)
return model.RiffObject(identifier + size_field + chunk)
def parse_compressed_object(self, stream, identifier, blocksizes):
if not identifier[:3].isalnum():
return None
rawsize = dword2py_int(stream.read(4))
size = blocksizes[rawsize]
size_field = py_int2dword(size)
if size & 1: size += 1
chunk = stream.read(size)
return model.RiffObject(identifier + size_field + chunk)