tomgco / node-zbar

Node ZBar

node-zbar is a NodeJS binding to the ZBar QR Code library. Initially this will spawn a child process and monitor the output. But eventually it will be a C++ module.

Installation

To use node-zbar, you will install the prerequisite of ZBar.

Compile from source see

http://zbar.sourceforge.net/

Node-zbar can then be installed via NPM

npm install zbar

Then, require the module

var zbar = require('zbar');

Usage

var Zbar = require('zbar');

zbar = new Zbar(device[, options]);


zbar.stdout.on('data', function(buf) {
  console.log('data scanned : ' + buf.toString());                                                                                                      
});

zbar.stderr.on('data', function(buf) {
    console.log(buf.toString());
});

Watch for data on device. device is a path to a supported webcam device. For example /dev/video0

The second argument is optional. The options if provided should be an object. The list of available options are as following:

width - scale the width of the sampled image

height - scale the width of the sampled image

dataType - can be raw or xml. default is raw

You should watch the stdout and stderr data.

Example:

var Zbar = require('zbar');

zbar = new Zbar('/dev/video0');


zbar.stdout.on('data', function(buf) {
  console.log('data scanned : ' + buf.toString());                                                                                                      
});

zbar.stderr.on('data', function(buf) {
    console.log(buf.toString());
});

Licence

Licensed under the New BSD License