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fixed-size-multiplexer

v1.0.2

Published

A tiny library for multiplexing data chunks into blocks of fixed size and vice versa

Downloads

11

Readme

Fixed size multiplexer Travis CI

A tiny library for multiplexing data chunks into blocks of fixed size and vice versa

This library works in Node and in Browser environments (UMD) and is optimized for very small size.

How to install

npm install fixed-size-multiplexer

How to use

Node.js:

const {Multiplexer, Demultiplexer} = require('fixed-size-multiplexer')
// Do stuff

Browser:

requirejs(['fixed-size-multiplexer'], function ({Multiplexer, Demultiplexer}) {
    // Do stuff
})

API

Multiplexer(max_data_length : number, block_size : number) : Multiplexer

Constructor used to create Multiplexer instance.

  • max_data_length - Max size of data in bytes (influences data header size)
  • block_size - Size of one block of data

Multiplexer.feed(data : Uint8Array)

Feed chunk of data into multiplexer.

Multiplexer.have_more_blocks() : boolean

Returns true if there are some blocks with useful data left.

Multiplexer.get_block() : Uint8Array

Get block, potentially with useful data. If no useful data left, will return zeroes (which can be fed into demultiplexer without issues).

Demultiplexer(max_data_length : number, block_size : number) : Demultiplexer

Constructor used to create Demultiplexer instance.

  • max_data_length - Max size of data in bytes (influences data header size)
  • block_size - Size of one block of data

Demultiplexer.feed(block : Uint8Array)

Feed block, potentially with useful data, into demultiplexer.

Demultiplexer.have_more_data() : boolean

Returns true if there are complete chunks with useful data present.

Demultiplexer.get_data() : null|Uint8Array

Get chunk of useful data. If no complete chunk of useful data present yet, returns null.

tests/index.ls contains usage examples.

Contribution

Feel free to create issues and send pull requests (for big changes create an issue first and link it from the PR), they are highly appreciated!

When reading LiveScript code make sure to configure 1 tab to be 4 spaces (GitHub uses 8 by default), otherwise code might be hard to read.

License

Free Public License 1.0.0 / Zero Clause BSD License

https://opensource.org/licenses/FPL-1.0.0

https://tldrlegal.com/license/bsd-0-clause-license