/// <summary>
/// Returns the zxing reader class for the current specified ScanMode.
/// </summary>
/// <returns></returns>
internal static com.google.zxing.Reader GetReader(BarcodeFormat format)
{
Dictionary <object, object> zxingHints
= new Dictionary <object, object>()
{
{ DecodeHintType.TRY_HARDER, true }
};
com.google.zxing.Reader r;
switch (format.Name)
{
case "CODE_128":
r = new com.google.zxing.oned.Code128Reader();
break;
case "CODE_39":
r = new com.google.zxing.oned.Code39Reader();
break;
case "EAN_13":
r = new com.google.zxing.oned.EAN13Reader();
break;
case "EAN_8":
r = new com.google.zxing.oned.EAN8Reader();
break;
case "ITF":
r = new com.google.zxing.oned.ITFReader();
break;
case "UPC_A":
r = new com.google.zxing.oned.UPCAReader();
break;
case "UPC_E":
r = new com.google.zxing.oned.UPCEReader();
break;
case "QR_CODE":
r = new com.google.zxing.qrcode.QRCodeReader();
break;
case "DATAMATRIX":
r = new com.google.zxing.datamatrix.DataMatrixReader();
break;
case "ALL_1D":
r = new com.google.zxing.oned.MultiFormatOneDReader(zxingHints);
break;
//Auto-Detect:
case "UPC_EAN":
default:
r = new com.google.zxing.oned.MultiFormatUPCEANReader(zxingHints);
break;
}
return(r);
}
public bool TryToRecognizeBarcode(WriteableBitmap wb, out string barCode)
{
// set some recognition settings
var zxhints = new Dictionary<object, object>()
{
{ DecodeHintType.TRY_HARDER, true },
{ DecodeHintType.POSSIBLE_FORMATS, new List<Object>() { BarcodeFormat.UPC_A, BarcodeFormat.UPC_E } }
};
// create reader instance
var reader = new com.google.zxing.oned.MultiFormatUPCEANReader(zxhints);
return TryToRecognize(wb, reader, zxhints, out barCode);
}
/// <summary>
/// Returns the zxing reader class for the current specified ScanMode.
/// </summary>
/// <returns></returns>
internal static com.google.zxing.Reader GetReader(BarcodeFormat format)
{
Dictionary<object, object> zxingHints
= new Dictionary<object, object>() { { DecodeHintType.TRY_HARDER, true } };
com.google.zxing.Reader r;
switch (format.Name)
{
case "CODE_128":
r = new com.google.zxing.oned.Code128Reader();
break;
case "CODE_39":
r = new com.google.zxing.oned.Code39Reader();
break;
case "EAN_13":
r = new com.google.zxing.oned.EAN13Reader();
break;
case "EAN_8":
r = new com.google.zxing.oned.EAN8Reader();
break;
case "ITF":
r = new com.google.zxing.oned.ITFReader();
break;
case "UPC_A":
r = new com.google.zxing.oned.UPCAReader();
break;
case "UPC_E":
r = new com.google.zxing.oned.UPCEReader();
break;
case "QR_CODE":
r = new com.google.zxing.qrcode.QRCodeReader();
break;
case "DATAMATRIX":
r = new com.google.zxing.datamatrix.DataMatrixReader();
break;
case "ALL_1D":
r = new com.google.zxing.oned.MultiFormatOneDReader(zxingHints);
break;
//Auto-Detect:
case "UPC_EAN":
default:
r = new com.google.zxing.oned.MultiFormatUPCEANReader(zxingHints);
break;
}
return r;
}
private void ProcessImage(BarcodeCaptureResult captureResults) {
captureResults.State = CaptureState.Processing;
try {
bool bIsReady = captureResults.isReadyForProcessing.WaitOne(3000);
if (!bIsReady) {
captureResults.State = CaptureState.UnknownError;
captureResults.ErrorMessage = "Error: Timeout waiting for images to be processed. Please try again or send issue report using app bar.";
return;
}
if (captureResults.VGABarcodeImage != null)
{
var wb = captureResults.VGABarcodeImage;
//Code from: btnReadTag_Click in "SLZXingQRSample\SLZXingQRSample\SLZXingSample\MainPage.xaml.vb"
var qrRead = new com.google.zxing.oned.MultiFormatUPCEANReader(zxingHints); ; // new com.google.zxing.qrcode.QRCodeReader();
var luminiance = new RGBLuminanceSource(wb, 640, 480);
var binarizer = new com.google.zxing.common.HybridBinarizer(luminiance);
var binBitmap = new com.google.zxing.BinaryBitmap(binarizer);
var results = qrRead.decode(binBitmap, zxingHints); //NOTE: will throw exception if cannot decode image.
captureResults.BarcodeText = results.Text;
captureResults.State = CaptureState.Success;
BarcodeCaptured.Invoke(captureResults);
//captureResults.ProcessValue();
}
else {
captureResults.State = CaptureState.UnknownError;
captureResults.ErrorMessage = "Cannot process image: invalid or null BitmapImage.";
}
}
catch (Exception ex) {
captureResults.ExceptionThrown = ex;
if (ex is com.google.zxing.ReaderException) {
captureResults.ErrorMessage = "Error: Cannot decode barcode image. Please make sure scan mode is correct and try again.";
captureResults.State = CaptureState.ScanFailed;
}
else {
Debug.WriteLine("Error: " + ex.ToString());
captureResults.ErrorMessage = String.Format("Barcode Library Processing Error: {0}\r\n{1}", ex.GetType(), ex.Message);
captureResults.State = CaptureState.UnknownError;
}
}
finally
{
lock (_resultTaskLock)
{
_resultTask = null;
}
}
}
/// <summary>
/// Returns the zxing reader class for the current specified ScanMode.
/// </summary>
/// <returns></returns>
public static com.google.zxing.Reader GetReader()
{
com.google.zxing.Reader r;
switch (WP7BarcodeManager.ScanMode.Name)
{
case "CODE_128":
r = new com.google.zxing.oned.Code128Reader();
break;
case "CODE_39":
r = new com.google.zxing.oned.Code39Reader();
break;
case "EAN_13":
r = new com.google.zxing.oned.EAN13Reader();
break;
case "EAN_8":
r = new com.google.zxing.oned.EAN8Reader();
break;
case "ITF":
r = new com.google.zxing.oned.ITFReader();
break;
case "UPC_A":
r = new com.google.zxing.oned.UPCAReader();
break;
case "UPC_E":
r = new com.google.zxing.oned.UPCEReader();
break;
case "QR_CODE":
r = new com.google.zxing.qrcode.QRCodeReader();
break;
case "DATAMATRIX":
r = new com.google.zxing.datamatrix.DataMatrixReader();
break;
//Auto-Detect:
case "UPC_EAN":
r = new com.google.zxing.oned.MultiFormatUPCEANReader(zxingHints);
break;
case "ALL_1D":
r = new com.google.zxing.oned.MultiFormatOneDReader(zxingHints);
break;
default:
r = null;
if (LastCaptureResults != null)
{
LastCaptureResults.ExceptionThrown = new ArgumentException("Error: Unknown barcode type");
}
throw new ArgumentException("Error: Unknown barcode type");
}
return r;
}
