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Pure C# MiniLZO port

, 22 Dec 2006
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Fast stream compression using a ported minilzo for .NET.

Introduction

I was recently in a position where I needed to find a fast streamable compression solution.  The great source by Markus Oberhumer provided the answer. After using the C code for a while, I realized C#/.NET lacked a similar library, short of one I found which was commercial.

As a result, I decided to attempt a minimalistic port of MiniLZO compression and decompression into pure C#. At this point, the code uses unsafe/fixed blocks to best mimic the original minilzo implementation. A pure managed solution may be soon to follow (at the cost of speed).

The code has not been unit tested 100%, but all initial tests have been successful. If anyone finds any bugs, please report them so I may fix it. I also have not done any profiling of the speed yet, if anyone feels upto the task of comparing it against the C implementation.

Use of the code is relatively simple, here is a quick example.

Compression

byte[] original = File.ReadAllBytes("...");
byte[] destination;
MiniLZO.Compress(original, out destination);

Decompression

byte[] destination = ...; /* Resulting buffer from above */
byte[] original = new byte[x];
MiniLZO.Decompress(destination, original);

Note that with compression, the destination buffer will be assigned and trimmed to the correct size. With decompression, the "original" buffer must be preallocated with the correct original size. Also note that my implementation removed all use of goto from the original source, and replaces certain uses with OverflowExceptions.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

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About the Author

Astaelan
Web Developer
Canada Canada
Short and simple, I'm a self contracted programmer, my strongest programming skills are in C/C++ and C#/.NET. I have a nack for porting C algorithms to C#.

Comments and Discussions

 
QuestionAccessViolation on 64-bit Pinmemberzzattack26-Aug-13 16:25 
QuestionCan u port lzo1z to .net Pinmemberyuvraj_oak1-Jul-11 23:01 
Can you plz port lzo1z to .net? plz contact me over yuvrajoak@gmail.com
I am interested in porting lzo1z to .net.
Thanx.
GeneralDynamic sizes PinmemberHenryChilvers20-Sep-10 13:26 
GeneralBuffer overflow help :( Pinmemberzeeh315-Jul-10 9:49 
GeneralRe: Buffer overflow help :( Pinmemberzeeh316-Jul-10 7:07 
GeneralRe: Buffer overflow help :( PinmemberMember 1020339811-Aug-13 20:15 
QuestionUsage in closed source customer project PinmemberKay Herzam12-Jul-07 22:01 
AnswerRe: Usage in closed source customer project PinmemberAstaelan13-Jul-07 6:11 
Generalexample with memory stream, chunk-by-chunk Pinmemberdncpax211-Jul-07 1:19 
GeneralRe: example with memory stream, chunk-by-chunk PinmemberAstaelan13-Jul-07 6:07 
GeneralSource Code PinmemberTit Copernicus5-May-07 3:10 
GeneralRe: Source Code PinmemberAstaelan5-May-07 8:24 
GeneralHere is how to make it work on Pocket PC Windows Mobile Pinmemberrkm10-Jan-07 1:56 
GeneralDoesn't work on 64 bit Pinmemberbimal20064-Jan-07 17:38 
GeneralRe: Doesn't work on 64 bit PinmemberAstaelan4-Jan-07 18:15 
GeneralRe: Doesn't work on 64 bit Pinmembertedsmorris24-Oct-07 8:39 
GeneralRe: Doesn't work on 64 bit PinmemberAVEbrahimi17-Jun-09 21:21 
GeneralThanks PinmemberBehind The Scene22-Dec-06 12:46 
GeneralRe: Thanks PinmemberAstaelan23-Dec-06 3:47 
GeneralTiny bug PinmemberSimmoTech22-Nov-06 19:14 
GeneralRe: Tiny bug PinmemberAstaelan22-Dec-06 9:19 
GeneralSuggestion PinmemberOskar Austegard9-Nov-06 3:04 
GeneralRe: Suggestion PinmemberAstaelan13-Nov-06 22:54 
GeneralAnother such library... Pinmemberomaurice6-Nov-06 15:06 
GeneralRe: Another such library... PinmemberAstaelan6-Nov-06 17:04 

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