/** Barcode Detector Demo. */
public class BarcodeScanningProcessor extends VisionProcessorBase> {

  private static final String TAG = "BarcodeScanProc";

  private final FirebaseVisionBarcodeDetector detector;

  public BarcodeScanningProcessor() {
    // Note that if you know which format of barcode your app is dealing with, detection will be
    // faster to specify the supported barcode formats one by one, e.g.
    // new FirebaseVisionBarcodeDetectorOptions.Builder()
    //     .setBarcodeFormats(FirebaseVisionBarcode.FORMAT_QR_CODE)
    //     .build();
    detector = FirebaseVision.getInstance().getVisionBarcodeDetector();
  }

  @Override
  public void stop() {
    try {
      detector.close();
    } catch (IOException e) {
      Log.e(TAG, "Exception thrown while trying to close Barcode Detector: " + e);
    }
  }

  @Override
  protected Task> detectInImage(FirebaseVisionImage image) {
    return detector.detectInImage(image);
  }

  @Override
  protected void onSuccess(
      @NonNull List barcodes,
      @NonNull FrameMetadata frameMetadata,
      @NonNull GraphicOverlay graphicOverlay) {
    graphicOverlay.clear();
    for (int i = 0; i < barcodes.size(); ++i) {
      FirebaseVisionBarcode barcode = barcodes.get(i);
      BarcodeGraphic barcodeGraphic = new BarcodeGraphic(graphicOverlay, barcode);
      graphicOverlay.add(barcodeGraphic);
    }
  }

  @Override
  protected void onFailure(@NonNull Exception e) {
    Log.e(TAG, "Barcode detection failed " + e);
  }
}