public void OnPreviewFrame(byte[] data, Camera camera)
{
var pars = camera.GetParameters();
var imageformat = pars.PreviewFormat;
if (imageformat == ImageFormatType.Nv21)
{
byte[] jpegData = ConvertYuvToJpeg(data, camera);
Frame frame = new Frame.Builder().SetBitmap(bytesToBitmap(jpegData)).Build();
//SparseArray barcodes = barcodeDetector.Detect(frame);
barcodeDetector.ReceiveFrame(frame);
}
}
public Task <ScanResult> ProcessImage(Stream bitmapStream)
{
if (!_recognizer.IsOperational)
{
throw new Exception("Recognizer not operational.");
}
using var bitmap = BitmapFactory.DecodeStream(bitmapStream);
using var frame = new Frame.Builder().SetBitmap(bitmap).Build();
using var results = _recognizer.Detect(frame);
var result = new ScanResult();
for (var i = 0; i < results.Size(); i++)
{
var androidBlock = (TextBlock)results.ValueAt(i);
if (androidBlock != null)
{
result.Add(GetBlock(androidBlock));
}
}
return(Task.FromResult(result));
}