Barcode and QR Code Reader SDK

The Barcode and QR Code Reader SDK is a wrapper for Dynamsoft Barcode Reader SDK, supporting .NET and C++ application development for 1D and 2D barcode recognition.

SDK Version for Different Platforms

Dynamsoft Barcode Reader	Android	iOS	Windows	Linux	macOS
Version	9.6.20	9.6.20	9.6.20	9.6.20	9.6.20

Supported Platforms

Windows (x64)
Linux (x64)
macOS (x64)
Android
iOS

License Activation

Click here to get a valid license key.

C++ Development

Quick Start

#include <iostream>
#include <fstream>

#include "DynamsoftBarcodeReader.h"
#include "DynamsoftCommon.h"

using namespace dynamsoft::dbr;

typedef struct BarcodeFormatSet
{
	int barcodeFormatIds;
	int barcodeFormatIds_2;
}BarcodeFormatSet;

unsigned long GetTime()
{
#if defined(_WIN64) || defined(_WIN32)
	return GetTickCount64();
#else
	struct timeval timing;
	gettimeofday(&timing, NULL);
	return timing.tv_sec * 1000 + timing.tv_usec / 1000;
#endif
}

void ToHexString(unsigned char* pSrc, int iLen, char* pDest)
{
	const char HEXCHARS[16] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };

	int i;
	char* ptr = pDest;

	for (i = 0; i < iLen; ++i)
	{
		snprintf(ptr, 4, "%c%c ", HEXCHARS[(pSrc[i] & 0xF0) >> 4], HEXCHARS[(pSrc[i] & 0x0F) >> 0]);
		ptr += 3;
	}
}

void OutputResult(CBarcodeReader& reader, int errorcode, float time)
{
	char* pszTemp = NULL;
	char* pszTemp1 = NULL;
	char* pszTemp2 = NULL;
	int iRet = errorcode;
	pszTemp = (char*)malloc(4096);
	if (iRet != DBR_OK && iRet != DBRERR_MAXICODE_LICENSE_INVALID && iRet != DBRERR_AZTEC_LICENSE_INVALID && iRet != DBRERR_LICENSE_EXPIRED && iRet != DBRERR_QR_LICENSE_INVALID && iRet != DBRERR_GS1_COMPOSITE_LICENSE_INVALID &&
		iRet != DBRERR_1D_LICENSE_INVALID && iRet != DBRERR_PDF417_LICENSE_INVALID && iRet != DBRERR_DATAMATRIX_LICENSE_INVALID && iRet != DBRERR_GS1_DATABAR_LICENSE_INVALID && iRet != DBRERR_PATCHCODE_LICENSE_INVALID &&
		iRet != DBRERR_POSTALCODE_LICENSE_INVALID && iRet != DBRERR_DOTCODE_LICENSE_INVALID && iRet != DBRERR_DPM_LICENSE_INVALID && iRet != DBRERR_IRT_LICENSE_INVALID && iRet != DMERR_NO_LICENSE && iRet != DMERR_TRIAL_LICENSE)
	{
		snprintf(pszTemp, 4096, "Failed to read barcode: %s\r\n", CBarcodeReader::GetErrorString(iRet));
		printf("%s", pszTemp);
		free(pszTemp);
		return;
	}

	TextResultArray* paryResult = NULL;
	reader.GetAllTextResults(&paryResult);

	if (paryResult->resultsCount == 0)
	{
		snprintf(pszTemp, 4096, "No barcode found. Total time spent: %.3f seconds.\r\n", time);
		printf("%s", pszTemp);
		free(pszTemp);
		CBarcodeReader::FreeTextResults(&paryResult);
		return;
	}

	snprintf(pszTemp, 4096, "Total barcode(s) found: %d. Total time spent: %.3f seconds\r\n\r\n", paryResult->resultsCount, time);
	printf("%s", pszTemp);
	for (int iIndex = 0; iIndex < paryResult->resultsCount; iIndex++)
	{
		snprintf(pszTemp, 4096, "Barcode %d:\r\n", iIndex + 1);
		printf("%s", pszTemp);
		snprintf(pszTemp, 4096, "    Type: %s\r\n", paryResult->results[iIndex]->barcodeFormatString);

		printf("%s", pszTemp);
		snprintf(pszTemp, 4096, "    Value: %s\r\n", paryResult->results[iIndex]->barcodeText);
		printf("%s", pszTemp);

		pszTemp1 = (char*)malloc(paryResult->results[iIndex]->barcodeBytesLength * 3 + 1);
		pszTemp2 = (char*)malloc(paryResult->results[iIndex]->barcodeBytesLength * 3 + 100);
		ToHexString(paryResult->results[iIndex]->barcodeBytes, paryResult->results[iIndex]->barcodeBytesLength, pszTemp1);
		snprintf(pszTemp2, paryResult->results[iIndex]->barcodeBytesLength * 3 + 100, "    Hex Data: %s\r\n", pszTemp1);
		printf("%s", pszTemp2);
		free(pszTemp1);
		free(pszTemp2);
	}

	free(pszTemp);
	CBarcodeReader::FreeTextResults(&paryResult);
}

int main(int argc, const char* argv[])
{
	int iIndex = 0;
	int iRet = -1;
	unsigned long ullTimeBegin = 0;
	unsigned long ullTimeEnd = 0;

	char szErrorMsg[256];
	PublicRuntimeSettings runtimeSettings;

	printf("*************************************************\r\n");
	printf("Welcome to Dynamsoft Barcode Reader Demo\r\n");
	printf("*************************************************\r\n");
	printf("Hints: Please input 'Q' or 'q' to quit the application.\r\n");

	iRet = CBarcodeReader::InitLicense("LICENSE-KEY", szErrorMsg, 256);
	if (iRet != DBR_OK)
	{
		printf("InitLicense Failed: %s\n", szErrorMsg);
	}
	CBarcodeReader reader;


	while (1)
	{
		std::string input;
		std::cout << "\r\n>> Step 1: Input your image file's full path:\r\n";
		std::cin >> input;

		if (input._Equal("q") || input._Equal("Q"))
		{
			return true;
		}

		std::ifstream file(input);

		if (!file.good()) {
			std::cout << "Please input a valid path.\r\n" << std::endl;
			continue;
		}

		reader.InitRuntimeSettingsWithString("{\"ImageParameter\":{\"Name\":\"BestCoverage\",\"BarcodeFormatIds\": [\"BF_ALL\"],\"BarcodeFormatIds_2\": [\"BF2_POSTALCODE\", \"BF2_DOTCODE\"] , \"DeblurLevel\":9,\"ExpectedBarcodesCount\":512,\"ScaleDownThreshold\":100000,\"LocalizationModes\":[{\"Mode\":\"LM_CONNECTED_BLOCKS\"},{\"Mode\":\"LM_SCAN_DIRECTLY\"},{\"Mode\":\"LM_STATISTICS\"},{\"Mode\":\"LM_LINES\"},{\"Mode\":\"LM_STATISTICS_MARKS\"}],\"GrayscaleTransformationModes\":[{\"Mode\":\"GTM_ORIGINAL\"},{\"Mode\":\"GTM_INVERTED\"}]}}", CM_OVERWRITE, szErrorMsg, 256);

		reader.GetRuntimeSettings(&runtimeSettings);
		runtimeSettings.barcodeFormatIds = BF_ALL;
		runtimeSettings.barcodeFormatIds_2 = BF2_POSTALCODE | BF2_DOTCODE;
		iRet = reader.UpdateRuntimeSettings(&runtimeSettings, szErrorMsg, 256);
		if (iRet != DBR_OK)
		{
			printf("Error code: %d. Error message: %s\n", iRet, szErrorMsg);
			return -1;
		}

		ullTimeBegin = GetTime();
		iRet = reader.DecodeFile(input.c_str(), "");
		ullTimeEnd = GetTime();
		OutputResult(reader, iRet, (((float)(ullTimeEnd - ullTimeBegin)) / 1000));

	}

	return 0;
}

Please refer to C++ Development for more information.

.NET Development

Quick Start

using System;
using Dynamsoft;

namespace Test
{
    class Program
    {
        static void Main(string[] args)
        {
            BarcodeQRCodeReader.InitLicense("LICENSE-KEY"); // Get a license key from https://www.dynamsoft.com/customer/license/trialLicense?product=dbr
            BarcodeQRCodeReader? reader = null;
            try {
                reader = BarcodeQRCodeReader.Create();
                Console.WriteLine("Please enter an image file: ");
                string? filename = Console.ReadLine();
                if (filename != null) {
                    Result[]? results = reader.DecodeFile(filename);
                    if (results != null) {
                        foreach (Result result in results) {
                            Console.WriteLine(result.Text);
                        }
                    }
                    else {
                        Console.WriteLine("No barcode found.");
                    }
                }
            }
            catch (Exception e)
            {
                Console.WriteLine(e.Message);
            }
            finally
            {
                if (reader != null)
                {
                    reader.Destroy();
                }
            }
        }
    }
}

Methods

public static void InitLicense(string license)
public static BarcodeQRCodeReader Create()
public Result[]? DecodeFile(string filename)
public Result[]? DecodeBuffer(byte[] buffer, int width, int height, int stride, ImagePixelFormat format)
public Result[]? DecodeBase64(string base64string)
public static string? GetVersionInfo()
public void SetParameters(string parameters)

Usage

Set the license key:

BarcodeQRCodeReader.InitLicense("LICENSE-KEY");

Initialize the barcode and QR code reader object:

BarcodeQRCodeReader? reader = BarcodeQRCodeReader.Create();

Decode barcode and QR code from an image file:

Result[]? results = reader.DecodeFile(filename);

Decode barcode and QR code from a base64 string:

Result[]? results = reader.DecodeBase64(base64string);

Decode barcode and QR code from a buffer:

BitmapData bmpData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height),
ImageLockMode.ReadWrite, bitmap.PixelFormat);

BarcodeQRCodeReader.ImagePixelFormat format = BarcodeQRCodeReader.ImagePixelFormat.IPF_ARGB_8888;

switch (bitmap.PixelFormat)
{
    case PixelFormat.Format24bppRgb:
        format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_888;
        break;
    case PixelFormat.Format32bppArgb:
        format = BarcodeQRCodeReader.ImagePixelFormat.IPF_ARGB_8888;
        break;
    case PixelFormat.Format16bppRgb565:
        format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_565;
        break;
    case PixelFormat.Format16bppRgb555:
        format = BarcodeQRCodeReader.ImagePixelFormat.IPF_RGB_555;
        break;
    case PixelFormat.Format8bppIndexed:
        format = BarcodeQRCodeReader.ImagePixelFormat.IPF_GRAYSCALED;
        break;
}

int length = bitmap.Height * bmpData.Stride;
byte[] bytes = new byte[length];
Marshal.Copy(bmpData.Scan0, bytes, 0, length);

Result[]? results = reader.DecodeBuffer(bytes, bitmap.Width, bitmap.Height, bmpData.Stride, format);
bitmap.UnlockBits(bmpData);

Get SDK version number:

string? version = BarcodeQRCodeReader.GetVersionInfo();

Customize parameters:

// Refer to https://www.dynamsoft.com/barcode-reader/parameters/structure-and-interfaces-of-parameters.html?ver=latest
reader.SetParameters("{\"Version\":\"3.0\", \"ImageParameter\":{\"Name\":\"IP1\", \"BarcodeFormatIds\":[\"BF_QR_CODE\", \"BF_ONED\"], \"ExpectedBarcodesCount\":20}}");

Example

command-line
```
dotnet restore
dotnet run
```
desktop-gui (Windows Only)
```
dotnet restore
dotnet run
```
web
```
dotnet restore
dotnet run
```
Mobile

Building NuGet Package from Source Code

#android 
cd android
dotnet build --configuration Release

#desktop
cd desktop
dotnet build --configuration Release

#ios 
cd ios
dotnet build --configuration Release

# package
nuget pack .\BarcodeQRCodeSDK.nuspec

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

yushulx / dotnet-barcode-qr-code-sdk

Barcode and QR Code Reader SDK

SDK Version for Different Platforms

Supported Platforms

License Activation

C++ Development

Quick Start

.NET Development

Quick Start

Methods

Usage

Example

Building NuGet Package from Source Code

Supported Barcode Symbologies

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