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    barcode4nodejs

    9.6.10 • Public • Published

    Node.js Barcode & QR Code SDK

    version

    The Node.js barcode QR code SDK is implemented by wrapping Dynamsoft Barcode Reader C++ SDK. It helps developers to build Node.js barcode and QR code scanning applications for Windows, Linux, macOS, Raspberry Pi and Jetson Nano.

    Dynamsoft Barcode Reader SDK Version

    v9.6.10

    License Key for SDK

    Pre-requisites

    • Platform-specific C/C++ compiler

    • node-gyp

      npm i node-gyp -g
      

    Supported Platforms

    • Windows
    • Linux
    • macOS

    Supported Barcode Symbologies

    • Linear Barcodes (1D)

      • Code 39 (including Code 39 Extended)
      • Code 93
      • Code 128
      • Codabar
      • Interleaved 2 of 5
      • EAN-8
      • EAN-13
      • UPC-A
      • UPC-E
      • Industrial 2 of 5
    • 2D Barcodes

      • QR Code (including Micro QR Code and Model 1)
      • Data Matrix
      • PDF417 (including Micro PDF417)
      • Aztec Code
      • MaxiCode (mode 2-5)
      • DotCode
    • Patch Code

    • GS1 Composite Code

    • GS1 DataBar

      • Omnidirectional,
      • Truncated, Stacked, Stacked
      • Omnidirectional, Limited,
      • Expanded, Expanded Stacked
    • Postal Codes

      • USPS Intelligent Mail
      • Postnet
      • Planet
      • Australian Post
      • UK Royal Mail

    API

    • 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 Usage

    1. Visit the barcode reader online demo.
    2. Customize parameters in advanced settings and then download the template.

    For example:

    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);

    Quick Usage

    const dbr = require('barcode4nodejs');
    dbr.initLicense("DLS2eyJoYW5kc2hha2VDb2RlIjoiMjAwMDAxLTE2NDk4Mjk3OTI2MzUiLCJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSIsInNlc3Npb25QYXNzd29yZCI6IndTcGR6Vm05WDJrcEQ5YUoifQ==")
    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);
      for (index in msg) {
        result = msg[index];
        console.log('Format: ' + result['format']);
        console.log('Value : ' + result['value']);
        console.log('x1: ' + result['x1']);
        console.log('y1 : ' + result['y1']);
        console.log('x2: ' + result['x2']);
        console.log('y2 : ' + result['y2']);
        console.log('x3: ' + result['x3']);
        console.log('y3: ' + result['y3']);
        console.log('x4: ' + result['x4']);
        console.log('y4 : ' + result['y4']);
      }
    }, "");

    How to Customize and Build the Module

    1. Get the source code:

      git clone https://github.com/yushulx/nodejs-barcode.git
      
    2. Download Dynamsoft C++ Barcode SDK. Copy header files to src folder and copy platform-specific shared libraries to platforms folder.

    3. Edit src/dbr.cc and index.js.

    4. 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.

    Install

    npm i barcode4nodejs

    DownloadsWeekly Downloads

    48

    Version

    9.6.10

    License

    MIT

    Unpacked Size

    111 MB

    Total Files

    59

    Last publish

    Collaborators

    • yushulx