private bool InitScanner(BarcodeScanner.BarcodeFormat barcodeType)
{
device = AVCaptureDevice.GetDefaultDevice(AVMediaType.Video);
if (device == null)
{
return(false);
}
input = AVCaptureDeviceInput.FromDevice(device);
if (input.Device.IsFocusModeSupported(AVCaptureFocusMode.ContinuousAutoFocus))
{
input.Device.LockForConfiguration(out NSError err);
input.Device.FocusMode = AVCaptureFocusMode.ContinuousAutoFocus;
input.Device.UnlockForConfiguration();
}
if (input == null)
{
return(false);
}
output = new AVCaptureMetadataOutput();
output.SetDelegate(this, DispatchQueue.MainQueue);
session = new AVCaptureSession();
session.AddInput(input);
session.AddOutput(output);
output.MetadataObjectTypes = GetBarcodeFormat(barcodeType);
captureVideoPreviewLayer = AVCaptureVideoPreviewLayer.FromSession(session);
captureVideoPreviewLayer.Frame = CGRect.Empty;
captureVideoPreviewLayer.VideoGravity = AVLayerVideoGravity.ResizeAspectFill;
captureVideoPreviewLayer.Connection.VideoOrientation = GetDeviceOrientation();
return(true);
}
private AVMetadataObjectType GetBarcodeFormat(BarcodeScanner.BarcodeFormat barcodeType)
{
switch (barcodeType)
{
case BarcodeScanner.BarcodeFormat.DataMatrix:
return(AVMetadataObjectType.DataMatrixCode);
case BarcodeScanner.BarcodeFormat.QrCode:
return(AVMetadataObjectType.QRCode);
case BarcodeScanner.BarcodeFormat.Pdf417:
return(AVMetadataObjectType.PDF417Code);
case BarcodeScanner.BarcodeFormat.Code128:
return(AVMetadataObjectType.Code128Code);
case BarcodeScanner.BarcodeFormat.Code39:
return(AVMetadataObjectType.Code39Code);
case BarcodeScanner.BarcodeFormat.Code93:
return(AVMetadataObjectType.Code93Code);
case BarcodeScanner.BarcodeFormat.Ean13:
return(AVMetadataObjectType.EAN13Code);
case BarcodeScanner.BarcodeFormat.Ean8:
return(AVMetadataObjectType.EAN8Code);
default:
return(AVMetadataObjectType.DataMatrixCode);
}
}
private BarcodeFormat GetBarcodeFormat(BarcodeScanner.BarcodeFormat barcodeType)
{
switch (barcodeType)
{
case BarcodeScanner.BarcodeFormat.DataMatrix:
return(BarcodeFormat.DataMatrix);
case BarcodeScanner.BarcodeFormat.QrCode:
return(BarcodeFormat.QrCode);
case BarcodeScanner.BarcodeFormat.Pdf417:
return(BarcodeFormat.Pdf417);
case BarcodeScanner.BarcodeFormat.Code128:
return(BarcodeFormat.Code128);
case BarcodeScanner.BarcodeFormat.Code39:
return(BarcodeFormat.Code39);
case BarcodeScanner.BarcodeFormat.Code93:
return(BarcodeFormat.Code93);
case BarcodeScanner.BarcodeFormat.Ean13:
return(BarcodeFormat.Ean13);
case BarcodeScanner.BarcodeFormat.Ean8:
return(BarcodeFormat.Ean8);
default:
return(BarcodeFormat.DataMatrix);
}
}
