Java 类com.google.zxing.multi.GenericMultipleBarcodeReader 实例源码

/**
 * Decode all barcodes in the image
 */
private String multiple(BufferedImage img) throws NotFoundException, ChecksumException, FormatException {
    long begin = System.currentTimeMillis();
    LuminanceSource source = new BufferedImageLuminanceSource(img);
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    com.google.zxing.Reader reader = new MultiFormatReader();
    MultipleBarcodeReader bcReader = new GenericMultipleBarcodeReader(reader);
    Hashtable<DecodeHintType, Object> hints = new Hashtable<DecodeHintType, Object>();
    hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
    StringBuilder sb = new StringBuilder();

    for (Result result : bcReader.decodeMultiple(bitmap, hints)) {
        sb.append(result.getText()).append(" ");
    }

    SystemProfiling.log(null, System.currentTimeMillis() - begin);
    log.trace("multiple.Time: {}", System.currentTimeMillis() - begin);
    return sb.toString();
}

private Result[] decodeMulti(URI uri, Map<DecodeHintType,?> hints) throws IOException {
  BufferedImage image;
  try {
    image = ImageIO.read(uri.toURL());
  } catch (IllegalArgumentException iae) {
    throw new FileNotFoundException("Resource not found: " + uri);
  }
  if (image == null) {
    System.err.println(uri.toString() + ": Could not load image");
    return null;
  }
  try {
    LuminanceSource source;
    if (config.getCrop() == null) {
      source = new BufferedImageLuminanceSource(image);
    } else {
      int[] crop = config.getCrop();
      source = new BufferedImageLuminanceSource(image, crop[0], crop[1], crop[2], crop[3]);
    }
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    if (config.isDumpBlackPoint()) {
      dumpBlackPoint(uri, image, bitmap);
    }

    MultiFormatReader multiFormatReader = new MultiFormatReader();
    GenericMultipleBarcodeReader reader = new GenericMultipleBarcodeReader(
        multiFormatReader);
    Result[] results = reader.decodeMultiple(bitmap, hints);

    if (config.isBrief()) {
      System.out.println(uri.toString() + ": Success");
    } else {
      for (Result result : results) {
        ParsedResult parsedResult = ResultParser.parseResult(result);
        System.out.println(uri.toString() + " (format: "
            + result.getBarcodeFormat() + ", type: "
            + parsedResult.getType() + "):\nRaw result:\n"
            + result.getText() + "\nParsed result:\n"
            + parsedResult.getDisplayResult());
        System.out.println("Found " + result.getResultPoints().length + " result points.");
        for (int i = 0; i < result.getResultPoints().length; i++) {
          ResultPoint rp = result.getResultPoints()[i];
          System.out.println("  Point " + i + ": (" + rp.getX() + ',' + rp.getY() + ')');
        }
      }
    }
    return results;
  } catch (NotFoundException nfe) {
    System.out.println(uri.toString() + ": No barcode found");
    return null;
  }
}