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Yann Collet 2015-05-07 13:00:21 +01:00
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lz4_Block_format.md
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LZ4 Block Format Description
============================
Last revised: 2015-03-26.
Last revised: 2015-05-07.
Author : Yann Collet
This small specification intents to provide enough information
to anyone willing to produce LZ4-compatible compressed data blocks
This specification is intended for developers
willing to produce LZ4-compatible compressed data blocks
using any programming language.
LZ4 is an LZ77-type compressor with a fixed, byte-oriented encoding.
The most important design principle behind LZ4 is simplicity.
It helps to create an easy to read and maintain source code.
It also helps later on for optimizations, compactness, and speed.
There is no entropy encoder back-end nor framing layer.
The latter is assumed to be handled by other parts of the system.
The latter is assumed to be handled by other parts of the system (see [LZ4 Frame format]).
This design is assumed to favor simplicity and speed.
It helps later on for optimizations, compactness, and features.
This document only describes the block format,
not how the LZ4 compressor nor decompressor actually work.
This document describes only the block format,
not how the compressor nor decompressor actually work.
The correctness of the decompressor should not depend
on implementation details of the compressor, and vice versa.
[LZ4 Frame format]: LZ4_Frame_format.md
Compressed block format