README

Summary

A JavaScript typed array implementation of the lzo1x codec found in minilzo.c http://www.oberhumer.com/opensource/lzo/#minilzo

The purpose of the library is primarily fast decompression in the browser. Having said that, the compression side is also quite fast.

Syntax

lzo1x.compress(state); lzo1x.decompress(state);

Parameters

state: { inputBuffer: , outputBuffer: null }

Returns

Functions return lzo1x.codes[OK|INPUT_OVERRUN|OUTPUT_OVERRUN|LOOKBEHIND_OVERRUN|EOF_FOUND]

Functions modify state.outputBuffer to contain a UInt8Array containing compressed or decompressed data.

Performance

Using ~25,000 test files, I see the following averaged performance on my 2.5GHz i5 (IvyBridge) macbook pro.

Chrome 45: compress 50MByte/s, decompress 77MByte/s Firefox 41.0a2: compress 43MByte/s, decompress 51MByte/s Safari 8: compress 44MByte/s, decompress 59MByte/s

Testing

Although tests are not present in this repo, I have tested compression and decompression separately using the output of the compiled minilzo.c (2.09) distribution. The tests ran using ~25,000 files and all passed.