Source code for bosdyn.bddf.protobuf_reader

# Copyright (c) 2021 Boston Dynamics, Inc.  All rights reserved.
# Downloading, reproducing, distributing or otherwise using the SDK Software
# is subject to the terms and conditions of the Boston Dynamics Software
# Development Kit License (20191101-BDSDK-SL).

"""A class for reading Protobuf data from a DataFile."""
from .message_reader import MessageReader

[docs]class ProtobufReader(MessageReader): """A class for reading Protobuf data from a DataFile. Methods raise ParseError if there is a problem with the format of the file. """ def __init__(self, data_reader): super(ProtobufReader, self).__init__(data_reader, require_protobuf=True)
[docs] def get_message(self, series_index, protobuf_type, index_in_series): """Return a deserialized protobuf from bytes stored in the file. Args: series_index: index (int) from the series_index() call protobuf_type: class of the protobuf we want to deserialize index_in_series: the index of the message within the series Returns: DataTypeDescriptor for channel, timestamp_nsec (int), deserialized protobuf object """ desc, timestamp_nsec, data = self.get_blob(series_index, index_in_series) protobuf = protobuf_type() protobuf.ParseFromString(data) return desc, timestamp_nsec, protobuf