RLE - run length encoding, the simplest approach for lossless compression
npm install rle##RLE - Run Length Encoding
_the simplest approach for lossless compression_
###Install
npm install rle
###API
Uint32Array RLE.encode(Array<*> stream)
Encodes the given stream of binary data by run length. Each "truthy" element in the stream is treated as 1.
The maximum run length is "limited" to 2^28.
This function further packs the data to reduce the memory usage by nominal 1/4 of the simple RLE approach.
Array
Decodes the stream of RLE data to a binary stream.
Array
Encodes the given data by run length using the simple approach. Each "truthy" element in the stream is treated as 1.
The return value represents a stream of alternating run lengths starting with the length of 0.
Array
Decodes the stream of simple RLE data to a binary stream.
###Example
``javascript
var rle = require('rle');
var blackAndWhite = getBlackAndWhiteData();
var encoded = rle.encode(blackAndWhite.asArray());
//....
var decoded = rle.decode(encoded);
`
####Base64
`javascript
var rleEncoded = rle.encode(data);
base64Encoded = new Buffer(new Uint8Array(rleEncoded.buffer)).toString('base64');
//....
var base64Decoded = new Uint32Array(new Uint8Array(new Buffer(base64Encoded, 'base64')).buffer);
var rleDecoded = rle.decode(base64Decoded);
``