symbian/ZXingBarcodeReader/src/DecodingOperations.cpp

   1 #include "ZXingBarcodeReaderAppView.h"\r
   2 #include <e32std.h>\r
   3 \r
   4 #include <zxing/qrcode/QRCodeReader.h>\r
   5 #include <zxing/MultiFormatReader.h>\r
   6 \r
   7 #include <zxing/common/GlobalHistogramBinarizer.h>\r
   8 #include <zxing/Binarizer.h>\r
   9 #include <zxing/BinaryBitmap.h>\r
  10 #include <CameraImage.h>\r
  11 #include <string>\r
  12 #include <aknmessagequerydialog.h>\r
  13 #include "ZXingBarcodeReader_0xEF24C10A.rsg"\r
  14 \r
  15 using namespace zxing;\r
  16 using namespace zxing::qrcode;\r
  17 \r
  18 void CZXingBarcodeReaderAppView::StartTimer()\r
  19         {\r
  20         const TInt tickInterval=2000000;\r
  21         iPeriodic=CPeriodic::NewL(0); // neutral priority\r
  22 \r
  23         //CleanupStack::PushL(iPeriodic);\r
  24 \r
  25         iPeriodic->Start(tickInterval,tickInterval,TCallBack(&CZXingBarcodeReaderAppView::Tick, this));\r
  26 \r
  27 //      CleanupStack::PopAndDestroy(iPeriodic);\r
  28         }\r
  29 \r
  30 TInt CZXingBarcodeReaderAppView::Tick(TAny* aObject)\r
  31         {\r
  32         // cast, and call non-static function\r
  33         ((CZXingBarcodeReaderAppView*)aObject)->decodeBackbufferImage();\r
  34         return 1;\r
  35         }\r
  36 \r
  37 void CZXingBarcodeReaderAppView::decodeBackbufferImage()\r
  38         {\r
  39     MultiFormatReader decoder;\r
  40 \r
  41         CameraImage image;\r
  42         image.setImage(iBackBuffer);\r
  43 \r
  44 \r
  45         Ref<Result> res;\r
  46 \r
  47         try\r
  48                 {\r
  49                 Ref<LuminanceSource> imageRef(new CameraImage(image));\r
  50                 GlobalHistogramBinarizer* binz = new GlobalHistogramBinarizer(imageRef);\r
  51         \r
  52                 Ref<Binarizer> bz (binz);\r
  53                 BinaryBitmap* bb = new BinaryBitmap(bz);\r
  54         \r
  55                 Ref<BinaryBitmap> ref(bb);\r
  56         \r
  57                 res = decoder.decode(ref);\r
  58         \r
  59                 string string = res->getText()->getText();\r
  60                 HBufC8 *pHeap8 = HBufC8::NewMaxLC(string.size());\r
  61                 pHeap8->Des().Copy((const TUint8 *)string.c_str());\r
  62                 \r
  63                 HBufC *pHeap16 = HBufC::NewMaxLC(pHeap8->Length());\r
  64                 pHeap16->Des().Copy(*pHeap8);\r
  65                 \r
  66                 ShowResultL(*pHeap16);\r
  67                 }\r
  68         catch(zxing::Exception& e)\r
  69                 {\r
  70                         /*string string = "Error...retrying...";\r
  71                         HBufC8 *pHeap8 = HBufC8::NewMaxLC(string.size());\r
  72                         pHeap8->Des().Copy((const TUint8 *)string.c_str());\r
  73                         \r
  74                         HBufC *pHeap16 = HBufC::NewMaxLC(pHeap8->Length());\r
  75                         pHeap16->Des().Copy(*pHeap8);\r
  76                         \r
  77                         ShowResultL(*pHeap16);*/\r
  78                 }\r
  79         }\r
  80 \r
  81 void CZXingBarcodeReaderAppView::ShowResultL(TDesC16& message)\r
  82         {\r
  83          StopTimer();\r
  84             \r
  85         CAknMessageQueryDialog* dlg = new (ELeave) CAknMessageQueryDialog ();\r
  86         \r
  87         dlg->PrepareLC(R_TEXT_QUERY_DIALOG );\r
  88            \r
  89         //HBufC* title = NULL;  \r
  90         //title = iEikonEnv->AllocReadResourceLC ( TEXT_DIALOG_TITLE );\r
  91         dlg->QueryHeading ()->SetTextL (_L("Information") );\r
  92                 \r
  93         dlg->SetMessageTextL ( message );\r
  94         \r
  95         dlg->RunLD();\r
  96         \r
  97         CleanupStack::PopAndDestroy();\r
  98         \r
  99         StartTimer();\r
 100         }\r