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Explore the flexibe barcode reading settings to optimize for your specific usage scenario.

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Try the most popular web scanner features: scan images, import local images and PDF files, edit, save to local, upload to database, and etc.

BARCODE READER JAVASCRIPT DEMO

Transform any camera-equipped devices into real-time, browser-based barcode and QR code scanners.

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Detects the machine-readable zone of a passport, scans the text, and parses into human-readable data.

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Table of contents

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Class Dynamsoft.DBR.BarcodeReader

Constructor and Destructor

Method Description
BarcodeReader Constructor of BarcodeReader object.
Dispose Destroys an instance of Dynamsoft Barcode Reader.

License

Method Description
InitLicenseFromServer Initializes license and connect to the specified server for online verification.
InitLicenseFromLicenseContent Initializes license from the license content on client machine for offline verification.
OutputLicenseToString Outputs the license content as an encrypted string from the license server to be used for offline license verification.
InitDLSConnectionParameters Initializes a DMDLSConnectionParameters struct with default values.
InitLicenseFromDLS Initializes the barcode reader license and connects to the specified server for online verification.
GetIdleInstancesCount Gets available instances count when charging by concurrent instances count.
InitLTSConnectionParameters Deprecated. Use InitDLSConnectionParameters instead.
InitLicenseFromLTS Deprecated. Use InitLicenseFromDLS instead.

Decode

Method Description
DecodeFile Decodes barcodes from a specified image file.
DecodeFileInMemory Decode barcodes from an image file in memory.
DecodeBuffer Decodes barcodes from the memory buffer containing image pixels in defined format.
DecodeBase64String Decodes barcodes from a base64 encoded string.
DecodeBitmap Decodes barcode from a bitmap.
InitIntermediateResult Inits an intermediateResult struct with default values.
DecodeIntermediateResults Decodes barcode from intermediate results.

Basic Settings Functions

Method Description
SetModeArgument Sets the optional argument for a specified mode in Modes parameters.
GetModeArgument Gets the optional argument for a specified mode in Modes parameters.
GetRuntimeSettings Gets current runtime settings.
UpdateRuntimeSettings Update runtime settings with a given struct.
ResetRuntimeSettings Resets all parameters to default values.

Advanced Settings Functions

Method Description
InitRuntimeSettingsWithFile Initializes runtime settings with the settings in a given JSON file.
InitRuntimeSettingsWithString Initializes runtime settings with the settings in a given JSON string.
AppendTplFileToRuntimeSettings Appends a new template file to the current runtime settings.
AppendTplStringToRuntimeSettings Appends a new template string to the current runtime settings.
GetAllParameterTemplateNames Gets the parameter templates name array.
OutputSettingsToFile Outputs runtime settings to a settings file (JSON file).
OutputSettingsToString Outputs runtime settings to a string.

General

Method Description
GetVersion Gets version information of SDK.

Video

Decode

Method Description
StartFrameDecoding Starts a new thread to decode barcodes from the inner frame queue.
StartFrameDecodingEx Starts a new thread to decode barcodes from the inner frame queue.
AppendFrame Appends a frame image buffer to the inner frame queue.
StopFrameDecoding Stops the frame decoding thread created by StartFrameDecoding.

Parameter

Method Description
InitFrameDecodingParameters Initializes frame decoding parameters.

Callback

Method Description
SetErrorCallback Set callback function to process errors which is triggered when the library finishes decoding a frame.
SetTextResultCallback Set callback function to process text results which is triggered when the library finishes decoding a frame.
SetIntermediateResultCallback Set callback function to process intermediate results which is triggered when the library finishes decoding a frame.

Status retrieval

Method Description
GetLengthOfFrameQueue Gets length of current inner frame queue.

Result

Method Description
GetIntermediateResults Returns intermediate results containing the original image, the colour clustered image, the binarized Image, contours, Lines, TextBlocks, etc.

BarcodeReader Attributes

Attribute Description
ProductKeys Product keys used for Dynamsoft Barcode Reader.

This page is compatible for:

Version 7.5.0

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