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