private Result DetectBarcode(int width, int height)
{
var start = DateTime.Now;
int bufferSize = width * height;
#region Reader Switch Hack
IBarcodeReader reader;
if (_readerSwitchCount == 0)
{
_readerSwitchCount = DefaultReaderSwitchCount;
reader = _barcodeReader;
}
else
{
_readerSwitchCount--;
reader = _qrcodeReader;
}
#endregion // Reader Switch Hack
byte[] buffer = new byte[bufferSize];
_device.GetPreviewBufferY(buffer);
var decodeStart = DateTime.Now;
Result result = reader.Decode(buffer, width, height, RGBLuminanceSource.BitmapFormat.Gray8);
var span = DateTime.Now - decodeStart;
var total = DateTime.Now - start;
//Debug.WriteLine("Barcode Decoded: " + span.TotalMilliseconds + "\tTotal: " + total.TotalMilliseconds);
return(result);
}
private async Task <Result> DetectBarcodeAsync()
{
var width = (int)PreviewResolution.Width;
var height = (int)PreviewResolution.Height;
var rotation = PhotoCaptureDevice.SensorRotationInDegrees;
LuminanceSource luminanceSource = null;
PhotoCaptureDevice.GetPreviewBufferY(_previewBuffer);
luminanceSource = new RGBLuminanceSource(_previewBuffer, width, height, RGBLuminanceSource.BitmapFormat.Gray8);
var result = _barcodeReader.Decode(luminanceSource);
if (result == null)
{
// ok, one try with rotation by 90 degrees
if ((Orientation & PageOrientation.Portrait) == PageOrientation.Portrait)
{
// if we are in potrait orientation it's better to rotate clockwise
// to get it in the right direction
luminanceSource = new RGBLuminanceSource(RotateClockwise(_previewBuffer, width, height), height, width, RGBLuminanceSource.BitmapFormat.Gray8);
}
else
{
// in landscape we try counter clockwise until we know it better
luminanceSource = luminanceSource.rotateCounterClockwise();
}
result = _barcodeReader.Decode(luminanceSource);
}
return(result);
}
private Result DetectBarcodeAsync()
{
var width = (int)resolution.Width;
var height = (int)resolution.Height;
var previewBuffer = new byte[width * height];
device.GetPreviewBufferY(previewBuffer);
var barcodeReader = new BarcodeReader();
barcodeReader.Options.TryHarder = true;
//barcodeReader.TryInverted = true;
//barcodeReader.AutoRotate = true;
var result = barcodeReader.Decode(previewBuffer, width, height, RGBLuminanceSource.BitmapFormat.Gray8);
return(result);
}
