LzoHeader structure
Terminator structure
Calculates the sum of the sizes of the types of T
Null header data layout if size_t has a width of 32-bit: void[4] null_header
header[0 .. 4] - all bytes set to value 0
Boost Software License Version 1.0. See LICENSE_BOOST.txt for details. Alternatively, this file may be distributed under the terms of the Tango 3-Clause BSD License (see LICENSE_BSD.txt for details).
Copyright (c) 2009-2016 dunnhumby Germany GmbH. All rights reserved.
Generates and reads headers of chunks of compressed data, containing the data length, compression type and checksum
There are two header versions: 1. the regular LzoHeader, 2. the Null header which has the same meaning as a Stop header.
LzoHeader data layout if size_t has a width of 32-bit: void[16] header
header[0 .. 4] - length of chunk[4 .. $] (or compressed data length + header length - 4) header[4 .. 8] - 32-bit CRC value of following header elements and compressed data (chunk[8 .. $]), calculated using lzo_crc32() header[8 .. 12] - chunk/compression type code (signed integer) header[12 .. 16] - length of uncompressed data (may be 0)