#include "ltocr.h"
L_LTOCR_API L_INT EXT_FUNCTION L_OcrAutoRecognizeManager_SetRunJobCallback(autoRecognizeManager, callback, userData)
Use this function to set a callback to get notified when a job is about to start or when a job is completed or aborted.
Handle to the OCR engine auto recognize manager.
Pointer to L_OcrAutoRecognizeRunJobCallback function to get notified when a job is about to start or when a job is completed or aborted.
Optional user data to pass to the callback function.
Value | Meaning |
---|---|
SUCCESS | The function was successful. |
< 1 | An error occurred. Refer to Return Codes. |
Use this function to set a callback to get notified when a job is about to start or when a job is completed or aborted.
This callback occurs when a job is about to start or when a job is completed or aborted. For more information about the kind of information you will get during this callback, refer to L_OcrAutoRecognizeRunJobCallbackData.
Required DLLs and Libraries
const L_TCHAR* _ocrOperationNames[] =
{
L"LoadImage",
L"SaveImage",
L"PreprocessImage",
L"AutoZone",
L"Recognize",
L"SaveDocumentPrepare",
L"SaveDocument",
L"SaveDocumentConvertImage",
L"Formatting",
L"RecognizeOMR",
};
L_VOID ShowJobErrors(L_OcrAutoRecognizeJob ocrJob)
{
// Show the errors
L_OcrAutoRecognizeManagerJobError* errors = NULL;
L_UINT errorCount = 0;
L_OcrAutoRecognizeJob_GetErrors(ocrJob, &errors, &errorCount);
std::wcout << L"Errors:" << std::endl;
for(L_UINT i = 0; i < errorCount; i++)
{
const L_OcrAutoRecognizeManagerJobError* error = &errors[i];
std::wcout << L" page: " << error->ImagePageNumber << L" Operation: " << _ocrOperationNames[error->Operation] << L" code: " << error->ErrorCode << std::endl;
}
L_OcrMemory_Free(errors);
}
L_INT EXT_CALLBACK MyRunJobCB(const L_OcrAutoRecognizeRunJobCallbackData* data, L_VOID* /*userData*/)
{
std::wcout << L"MyRunJobCallback fired...\nStatus: " << data->Status << std::endl;
if(data->IsCompleted)
std::wcout << L"Job completed" << std::endl;
else
std::wcout << L"Job still in progress" << std::endl;
if(data->Status != SUCCESS)
ShowJobErrors(data->Job);
return SUCCESS;
}
L_INT L_OcrAutoRecognizeManager_SetRunJobCallbackExample()
{
L_INT retCode = -1;
L_OcrEngine ocrEngine = NULL;
L_OcrAutoRecognizeManager autoRecognizeManager = NULL;
L_OcrAutoRecognizeManagerOptions autoRecognizeOptions = { 0 };
L_OcrAutoRecognizeJob autoRecognizeJob = NULL;
// Create an instance of the engine
retCode = L_OcrEngineManager_CreateEngine(L_OcrEngineType_Advantage, &ocrEngine);
if(retCode != SUCCESS)
return retCode;
// Start the engine using default parameters
retCode =L_OcrEngine_Startup(ocrEngine, NULL, OCR_ADVANTAGE_RUNTIME_DIR);
if(retCode != SUCCESS)
return retCode;
// Get the AutoRecognizeManager
L_OcrEngine_GetAutoRecognizeManager(ocrEngine, &autoRecognizeManager);
// Set the options we want
autoRecognizeOptions.StructSize = sizeof(L_OcrAutoRecognizeManagerOptions);
L_OcrAutoRecognizeManager_GetOptions(autoRecognizeManager, &autoRecognizeOptions);
// Use maximum CPUs/cores of current machine to speed up recognition
autoRecognizeOptions.UseThreads = true;
// Deskew and auto-orient all pages before recognition
autoRecognizeOptions.PreprocessPageCommands = L_OcrAutoPreprocessPageCommands_Deskew | L_OcrAutoPreprocessPageCommands_Rotate;
// Give the manager our updated settings
L_OcrAutoRecognizeManager_SetOptions(autoRecognizeManager, &autoRecognizeOptions);
L_OcrAutoRecognizeJobData jobData;
jobData.StructSize = sizeof(L_OcrAutoRecognizeJobData);
wcscpy_s(jobData.ImageFileName, MAKE_IMAGE_PATH(L_TEXT("OCR1.tif")));
wcscpy_s(jobData.DocumentFileName, MAKE_IMAGE_PATH(L_TEXT("OCR1.pdf")));
jobData.Format = DOCUMENTFORMAT_PDF;
wcscpy_s(jobData.JobName, L"MyJob");
jobData.FirstPageNumber = 1;
jobData.LastPageNumber = -1;
jobData.UserData = NULL;
wcscpy_s(jobData.ZonesFileName, L_TEXT(""));
L_OcrAutoRecognizeManager_CreateJob(autoRecognizeManager, &autoRecognizeJob, &jobData);
L_OcrAutoRecognizeRunJobCallback runJobCallback;
L_OcrAutoRecognizeManager_GetRunJobCallback(autoRecognizeManager, &runJobCallback, NULL);
if(runJobCallback == NULL)
{
// Add our callback handler
L_OcrAutoRecognizeManager_SetRunJobCallback(autoRecognizeManager, &MyRunJobCB, NULL);
}
// Run the job
retCode = L_OcrAutoRecognizeManager_RunJob(autoRecognizeManager, autoRecognizeJob);
//CLEANUP
L_OcrAutoRecognizeJob_Destroy(autoRecognizeJob);
L_OcrEngine_Destroy(ocrEngine);
return retCode;
}