Package Exports

barcode4nodejs

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Readme

DBR Node.js Extension

The project aims to help developers build Node.js barcode apps with Dynamsoft Barcode Reader in Windows, Linux, macOS, and Raspberry Pi.

Barcode SDK License Key

Get the trial license.

Contact Us

support@dynamsoft.com

Environment

Node v12.14.0

Installation

Dynamsoft Barcode Reader SDK v7.4.
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 Build the Module for Windows, Linux, macOS and Raspberry Pi

Replace the library files in platforms/ with yours.

Build the Node.js extension:

node-gyp configure
node-gyp build

For Raspberry Pi

Download and extract the Raspberry Pi package, and then copy the libDynamsoftBarcodeReader.so file to the platforms/linux folder.

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)

Template is an advanced usage. By default, you just need to set template "".

barcodeTypes

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

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);

barcode4nodejs