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How-to Guides - Get Detailed Barcode Information
The Dynamsoft Barcode Reader SDK provides APIs for you to get the detailed barcode information like checksum digit, start/stop characters, error correction level, etc. To learn more about what information you can get, see the following API links:
Here we take QR Code as example and show how to get the version and model of a QR Code.
What is the Version of a QR Code?
| QRCode Version | Modules |
|---|---|
| Version 1 | 21 x 21 |
| Version 2 | 25 x 25 |
| … | … |
| Version N | (17 + N x 4) x (17 + N x 4) |
| Version 40 | 177 x 177 |
What is the Model of a QR Code?
| QRCode Model | Description |
|---|---|
| Model 1 | The original QR Code. It is a code capable of coding 1,167 numerals with its maximum version being 14 (73 x 73 modules). |
| Model 2 | Created by improving Model 1 so that this code can be read smoothly even if it is distorted in some way. This code can encode up to 7,089 numerals with its maximum version being 40 (177 x 177 modules). Today, the term QRCode usually refers to QRCode Model 2. |
Code Snippet for Getting Detailed Barcode Information
int iRet = -1;
int iLicMsg = -1;
TextResultArray* paryResult = NULL;
PublicRuntimeSettings* runtimeSettings = new PublicRuntimeSettings();
// Initialize license prior to any decoding
CBarcodeReader reader;
char sError[512];
iLicMsg = reader.InitLicense("f0068MgA4o***");
reader.GetRuntimeSettings(runtimeSettings);
runtimeSettings->barcodeFormatIds = BF_QR_CODE;
reader.UpdateRuntimeSettings(runtimeSettings, sError, 512);
//If error occurs to the license initialization
if (iLicMsg != DBR_OK)
{
printf("Failed to initialize the license successfully: %d\r\n%s\r\n", iLicMsg, DBR_GetErrorString(iLicMsg));
return iLicMsg;
}
// Start decoding
iRet = reader.DecodeFile("<please input your image file path>", "");
// If error occurs
if (iRet != DBR_OK)
{
printf("Failed to read barcode: %d\r\n%s\r\n", iRet, DBR_GetErrorString(iRet));
return iRet;
}
// If succeeds
reader.GetAllTextResults(&paryResult);
for (int iIndex = 0; iIndex < paryResult->resultsCount; iIndex++)
{
QRCodeDetails* qrd = (QRCodeDetails*)paryResult->results[iIndex]->detailedResult;
printf("QRCode Model:%d \r\n", qrd->model);
printf("QRCode Version: %d \r\n", qrd->version);
printf("BarcodeFormat: %s\r\n", paryResult->results[iIndex]->barcodeFormatString);
printf("Text read: %s\r\n", paryResult->results[iIndex]->barcodeText);
}
// Finally release BarcodeResultArray
CBarcodeReader::FreeTextResults(&paryResult);
return 0;
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