Package Exports

barcode4nodejs
barcode4nodejs/index.js

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Readme

Node.js Barcode Reader SDK

version

The Node.js barcode reader SDK is implemented by wrapping Dynamsoft Barcode Reader C++ SDK. It helps developers to build Node.js barcode apps for Windows, Linux, macOS, and Raspberry Pi.

What You Should Know

Requirements

Dynamsoft Barcode Reader v8.8
Platform-specific C/C++ compiler
node-gyp
```
npm i node-gyp -g
```

Quick Usage

const dbr = require('barcode4nodejs');
dbr.initLicense("LICENSE-KEY")
dbr.decodeFileAsync("YOUR IMAGE FILE", dbr.formats.OneD | dbr.formats.PDF417 | dbr.formats.QRCode | dbr.formats.DataMatrix | dbr.formats.Aztec, function(err, msg){
  console.log(msg)
}, "");

How to Customize and Build the Module for Windows, Linux, macOS and Raspberry Pi

Get the source code:

git clone https://github.com/yushulx/nodejs-barcode.git

Edit src/dbr.cc and index.js.
Download Dynamsoft C++ Barcode SDK. Copy header files to src folder and copy platform-specific shared libraries to platforms folder.

Build the Node.js extension:

node-gyp configure
node-gyp build

For Visual Studio 2019 Community

node-gyp configure --msbuild_path="C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\MSBuild\Current\Bin\MSBuild.exe" --msvs_version=2017
node-gyp build

Examples

examples/command-line
```
node test.js -f test.tif
```
examples/web
```
npm install
node server.js
```
Open http://localhost:2018/index.htm in web browsers.

examples/desktop-electron

cd src
node-gyp rebuild --target=0.36.7 --arch=x64 --dist-url=https://atom.io/download/atom-shell

cd examples/desktop-electron
npm install
npm start

examples/linux-camera

npm install v4l2camera
node camera_barcode_reader.js

examples/RESTful-service
```
npm install restify
node server.js
```
Open https://< ip >:2018 to scan barcodes in web browsers.

APIs

initLicense(license-key)
decodeFileAsync(fileName, barcodeTypes, callback, template)
decodeFileStreamAsync(fileStream, fileSize, barcodeTypes, callback, template)
decodeBase64Async(base64, barcodeTypes, callback, template)
decodeYUYVAsync(buffer, width, height, barcodeTypes, callback, template)
decodeBufferAsync(buffer, width, height, stride, barcodeTypes, callback, template, maxBufferLength)

To customize a template, you can visit the barcode reader online demo and go to the advanced settings. Setting template as "" is enough for most cases.

Set barcodeTypes

barcodeTypes = dbr.formats.OneD | dbr.formats.PDF417 | dbr.formats.QRCode | dbr.formats.DataMatrix | dbr.formats.Aztec

Use template

let params = {
  "ImageParameter": {
    "Name": "Custom_143301_827",
    "BarcodeFormatIds": [
      "BF_ALL"
    ],
    "DeblurLevel": 9,
    "ExpectedBarcodesCount": 100,
    "ScaleDownThreshold": 1200000,
    "Timeout": 100000
  },
  "Version": "3.0"
};
template = JSON.stringify(params);