L_OcrEngine_Startup

#define MAKE_IMAGE_PATH(pFileName) TEXT("C:\\Users\\Public\\Documents\\LEADTOOLS Images\\")pFileName 
L_INT L_OcrEngine_StartupExample() 
{ 
   // Load an image file 
   BITMAPHANDLE bitmap = { 0 }; 
   L_OcrEngine ocrEngine = NULL; 
   L_OcrPage ocrPage = NULL; 
   L_OcrDocumentManager ocrDocumentManager = NULL; 
   L_OcrDocument ocrDocument = NULL; 
   // Assume you copied the engine runtime files to C:\MyApp\Ocr 
   const L_TCHAR* engineDir = L_TEXT("C:\\MyApp\\Ocr"); 
   // Store the engine work directory into a path inside our application 
   // Note: You can pass NULL for the working directory and LEADTOOLS 
   // will automatically write to a temporary directory. 
   const L_TCHAR* workDir = L_TEXT("C:\\MyApp\\OcrTemp"); 
   // Create an instance of the engine 
   L_INT retCode = L_OcrEngineManager_CreateEngine(L_OcrEngineType_Advantage, &ocrEngine); 
   if(retCode != SUCCESS) 
      return retCode; 
   //// Show that the engine has not been started yet 
   if(L_OcrEngine_IsStarted(ocrEngine)) 
      std::cout << "Before calling Startup, IsStarted = true\n"; 
   else 
      std::cout << "Before calling Startup, IsStarted = false\n"; 
   // Start the engine using our parameters 
   retCode = L_OcrEngine_Startup(ocrEngine, workDir, engineDir); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // Make sure the engine is using our working directory 
   L_TCHAR workDirAfterStartup[MAX_PATH]; 
   L_OcrEngine_GetWorkDirectory(ocrEngine, workDirAfterStartup, MAX_PATH); 
   std::wcout << "Original workDir passed is \"" << workDir << "\",\nthe value of WorkDirectory after Startup is \"" << workDirAfterStartup << "\"\n"; 
   // show the engine directory where the engine runtime binaries resides 
   L_TCHAR engineDirectory[MAX_PATH]; 
   L_OcrEngine_GetWorkDirectory(ocrEngine, engineDirectory, MAX_PATH); 
   std::wcout << "Engine directory: " << engineDir << "\n"; 
   // show started engine type 
   L_OcrEngineType engineType; 
   L_OcrEngine_GetEngineType(ocrEngine, &engineType); 
   switch(engineType) 
   { 
      case L_OcrEngineType_Advantage: 
      std::wcout << "Started OCR engine type: Advantage\n"; 
      break; 
   } 
   // Show that the engine has started fine 
   if(L_OcrEngine_IsStarted(ocrEngine)) 
      std::cout << "After calling Startup, IsStarted = true\n"; 
   else 
   { 
      std::cout << "After calling Startup, IsStarted = false\n"; 
      goto CLEANUP; 
   } 
   // Load an image to process 
   retCode = L_LoadBitmap(MAKE_IMAGE_PATH(L_TEXT("Ocr1.tif")), &bitmap, sizeof(BITMAPHANDLE), 0, ORDER_RGB, NULL, NULL); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // Add an image to OCR page. Transfer ownership of the bitmap to the page 
   retCode = L_OcrPage_FromBitmap(ocrEngine, &ocrPage, &bitmap, L_OcrBitmapSharingMode_AutoFree, NULL, NULL); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // At this point, we have a valid page and bitmap ownership has transfered, so, we do not need to free the bitmap anymore 
   bitmap.Flags.Allocated = 0; 
   // Recognize the page 
   // Note: Recognize can be called without calling AutoZone or manually adding zones. 
   // The engine will check and automatically auto-zones the page (as illustrated here). 
   retCode = L_OcrPage_Recognize(ocrPage, NULL, NULL); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // Get the Document Manager 
   retCode = L_OcrEngine_GetDocumentManager(ocrEngine, &ocrDocumentManager); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // Create an OCR document 
   retCode = L_OcrDocumentManager_CreateDocument(ocrDocumentManager, &ocrDocument, L_OcrCreateDocumentOptions_AutoDeleteFile, NULL); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // In Document File Mode, add OcrPage to OcrDocument after recognition 
   retCode = L_OcrDocument_AddPage(ocrDocument, ocrPage); 
   if(retCode != SUCCESS) 
      goto CLEANUP; 
   // Adding the page to a file based document will take a snap shot of the recognition data and store it in the document. At this 
   // point, the page is no longer needed. So destroy it to free up memory not used anymore 
   L_OcrPage_Destroy(ocrPage); 
   // Set the handle to NULL so we do not free it in our clean-up code 
   ocrPage = NULL; 
   // Save the document we have as PDF 
   retCode = L_OcrDocument_Save(ocrDocument, MAKE_IMAGE_PATH(L_TEXT("Ocr1.pdf")), DOCUMENTFORMAT_PDF, NULL, NULL); 
CLEANUP: 
   if(bitmap.Flags.Allocated) 
      L_FreeBitmap(&bitmap); 
   if(ocrPage != NULL) 
      L_OcrPage_Destroy(ocrPage); 
   if(ocrDocument != NULL) 
      L_OcrDocument_Destroy(ocrDocument); 
   if(ocrEngine != NULL) 
      L_OcrEngine_Destroy(ocrEngine); 
   return retCode; 
}