Node-jp2a NPM | npm.io

node-jp2a

jp2a library for Node.js

Prerequisites

Node.js 4.x/5.x
C++11 compiler
npm install -g node-gyp
libjpeg
- OS X: brew install jpeg
- Ubuntu: sudo aptitude install libjpeg-dev

Install

From NPM: npm install node-jp2a --save

Brief introduction

This Node.js module is derived from jp2a.

This module exports a jp2a function as a convienent function to convert a JPEG image to ascii text, which accpets a string (path of the image) and an optional JSON object as parameters. jp2a function throws exception on encountering errors.

jp2a = require 'node-jp2a'
console.log jp2a 'test/piccode_10221754_974.jpg', {
  width: 100,
  height: 18,
  color: true,
  invert: false,
  flipx: false,
  flipy: false}

             ..
    .'cdo;;ok0O,
   ;ONNd.  .:kXl  ':dl;,;odc'.                  .,,,.
  '0MMNx;.    :lckNXl.   .dNNOc;;,,'            .:OWXkc;. .;;,,,'.
  .OWMMMWKkxxdcdNWXc      .oWMMMWMMKl,;oxdc'     .dWWO'   .lOOdlc,...........''''''''''''..
  .oKWMMWWMMMMMMMW0'       ;KMMMMMWd..'oXWMNx:,;;lKWWO:;odool;,,;;;,,,,,,,,,,,,,,,,,,,;;,'.
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Besides, jp2a.Image is exported to wrap underlying image and works the async way:

jp2a = require 'node-jp2a'
image = new jp2a.Image 'test/piccode_10221754_974.jpg'
image.decode {
  width: 120,
  color: true,
  invert: true,
  flipx: false,
  flipy: false}, (err, text) ->
  if err then process.stderr.write err+'\n'
  else process.stdout.write text
  image.close()

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