com.google.zxing.DecodeHintType Java Examples

private static Result[] decode(BinaryBitmap image, Map<DecodeHintType, ?> hints, boolean multiple) 
    throws NotFoundException, FormatException, ChecksumException {
  List<Result> results = new ArrayList<>();
  PDF417DetectorResult detectorResult = Detector.detect(image, hints, multiple);
  for (ResultPoint[] points : detectorResult.getPoints()) {
    DecoderResult decoderResult = PDF417ScanningDecoder.decode(detectorResult.getBits(), points[4], points[5],
        points[6], points[7], getMinCodewordWidth(points), getMaxCodewordWidth(points));
    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.PDF_417);
    result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, decoderResult.getECLevel());
    PDF417ResultMetadata pdf417ResultMetadata = (PDF417ResultMetadata) decoderResult.getOther();
    if (pdf417ResultMetadata != null) {
      result.putMetadata(ResultMetadataType.PDF417_EXTRA_METADATA, pdf417ResultMetadata);
    }
    results.add(result);
  }
  return results.toArray(new Result[results.size()]);
}
 

private static Result[] decode(BinaryBitmap image, Map<DecodeHintType, ?> hints, boolean multiple) 
    throws NotFoundException, FormatException, ChecksumException {
  List<Result> results = new ArrayList<>();
  PDF417DetectorResult detectorResult = Detector.detect(image, hints, multiple);
  for (ResultPoint[] points : detectorResult.getPoints()) {
    DecoderResult decoderResult = PDF417ScanningDecoder.decode(detectorResult.getBits(), points[4], points[5],
        points[6], points[7], getMinCodewordWidth(points), getMaxCodewordWidth(points));
    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.PDF_417);
    result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, decoderResult.getECLevel());
    PDF417ResultMetadata pdf417ResultMetadata = (PDF417ResultMetadata) decoderResult.getOther();
    if (pdf417ResultMetadata != null) {
      result.putMetadata(ResultMetadataType.PDF417_EXTRA_METADATA, pdf417ResultMetadata);
    }
    results.add(result);
  }
  return results.toArray(new Result[results.size()]);
}
 

@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
    throws NotFoundException, ChecksumException, FormatException {
  DecoderResult decoderResult;
  ResultPoint[] points;
  if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
    BitMatrix bits = extractPureBits(image.getBlackMatrix());
    decoderResult = decoder.decode(bits);
    points = NO_POINTS;
  } else {
    DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect();
    decoderResult = decoder.decode(detectorResult.getBits());
    points = detectorResult.getPoints();
  }
  Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points,
      BarcodeFormat.DATA_MATRIX);
  List<byte[]> byteSegments = decoderResult.getByteSegments();
  if (byteSegments != null) {
    result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
  }
  String ecLevel = decoderResult.getECLevel();
  if (ecLevel != null) {
    result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
  }
  return result;
}
 

CaptureActivityHandler(CaptureActivity activity,
                       Collection<BarcodeFormat> decodeFormats,
                       Map<DecodeHintType,?> baseHints,
                       String characterSet,
                       CameraManager cameraManager) {
  this.activity = activity;
  decodeThread = new DecodeThread(activity, decodeFormats, baseHints, characterSet,
      new ViewfinderResultPointCallback(activity.getViewfinderView()));
  decodeThread.start();
  state = State.SUCCESS;

  // Start ourselves capturing previews and decoding.
  this.cameraManager = cameraManager;
  cameraManager.startPreview();
  restartPreviewAndDecode();
}
 

public Result decode(BinaryBitmap binarybitmap, Map map)
{
    DecoderResult decoderresult;
    ResultPoint aresultpoint[];
    if (map != null && map.containsKey(DecodeHintType.PURE_BARCODE))
    {
        BitMatrix bitmatrix = a(binarybitmap.getBlackMatrix());
        decoderresult = b.decode(bitmatrix);
        aresultpoint = a;
    } else
    {
        DetectorResult detectorresult = (new Detector(binarybitmap)).detect();
        decoderresult = b.decode(detectorresult.getBits());
        aresultpoint = detectorresult.getPoints();
    }
    return new Result(decoderresult.getText(), decoderresult.getRawBytes(), aresultpoint, BarcodeFormat.PDF_417);
}
 

@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints) throws NotFoundException, ChecksumException, FormatException {
    DecoderResult decoderResult;
    ResultPoint[] points;
    if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
        BitMatrix bits = extractPureBits(image.getBlackMatrix());
        decoderResult = decoder.decode(bits, hints);
        points = NO_POINTS;
    } else {
        DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect(hints);
        decoderResult = decoder.decode(detectorResult.getBits(), hints);
        points = detectorResult.getPoints();
    }

    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);
    List<byte[]> byteSegments = decoderResult.getByteSegments();
    if (byteSegments != null) {
        result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
    }
    String ecLevel = decoderResult.getECLevel();
    if (ecLevel != null) {
        result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
    }
    return result;
}
 

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}
 

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}
 

/**
 * 解析QR图内容
 *
 * @param imageView
 * @return
 */

public static String readImage(ImageView imageView) {
    String content = null;
    Map<DecodeHintType, String> hints = new HashMap<>();
    hints.put(DecodeHintType.CHARACTER_SET, "utf-8");

    // 获得待解析的图片
    Bitmap bitmap = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
    RGBLuminanceSource source = new RGBLuminanceSource(bitmap);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        Result result = reader.decode(bitmap1, hints);
        // 得到解析后的文字
        content = result.getText();
    } catch (Exception e) {
        e.printStackTrace();
    }
    return content;
}
 

public DetectorResult[] detectMulti(Map<DecodeHintType,?> hints) throws NotFoundException {
  BitMatrix image = getImage();
  ResultPointCallback resultPointCallback =
      hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
  MultiFinderPatternFinder finder = new MultiFinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo[] infos = finder.findMulti(hints);

  if (infos.length == 0) {
    throw NotFoundException.getNotFoundInstance();
  }

  List<DetectorResult> result = new ArrayList<>();
  for (FinderPatternInfo info : infos) {
    try {
      result.add(processFinderPatternInfo(info));
    } catch (ReaderException e) {
      // ignore
    }
  }
  if (result.isEmpty()) {
    return EMPTY_DETECTOR_RESULTS;
  } else {
    return result.toArray(new DetectorResult[result.size()]);
  }
}
 

private Map<DecodeHintType, Object> changeZXingDecodeDataMode() {
    Map<DecodeHintType, Object> hints = new EnumMap<DecodeHintType, Object>(DecodeHintType.class);
    Collection<BarcodeFormat> decodeFormats = new ArrayList<BarcodeFormat>();

    switch (mDataMode) {
        case DECODE_DATA_MODE_ALL:
            decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
            decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
            break;

        case DECODE_DATA_MODE_QRCODE:
            decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
            break;

        case DECODE_DATA_MODE_BARCODE:
            decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
            break;
    }
    hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);

    return hints;
}
 

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        Map<DecodeHintType,?> hints) throws NotFoundException {
  Pair leftPair = decodePair(row, false, rowNumber, hints);
  addOrTally(possibleLeftPairs, leftPair);
  row.reverse();
  Pair rightPair = decodePair(row, true, rowNumber, hints);
  addOrTally(possibleRightPairs, rightPair);
  row.reverse();
  for (Pair left : possibleLeftPairs) {
    if (left.getCount() > 1) {
      for (Pair right : possibleRightPairs) {
        if (right.getCount() > 1 && checkChecksum(left, right)) {
          return constructResult(left, right);
        }
      }
    }
  }
  throw NotFoundException.getNotFoundInstance();
}
 

/**
 * <p>Detects a PDF417 Code in an image. Only checks 0 and 180 degree rotations.</p>
 *
 * @param image barcode image to decode
 * @param hints optional hints to detector
 * @param multiple if true, then the image is searched for multiple codes. If false, then at most one code will
 * be found and returned
 * @return {@link PDF417DetectorResult} encapsulating results of detecting a PDF417 code
 * @throws NotFoundException if no PDF417 Code can be found
 */
public static PDF417DetectorResult detect(BinaryBitmap image, Map<DecodeHintType,?> hints, boolean multiple)
    throws NotFoundException {
  // TODO detection improvement, tryHarder could try several different luminance thresholds/blackpoints or even 
  // different binarizers
  //boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);

  BitMatrix bitMatrix = image.getBlackMatrix();

  List<ResultPoint[]> barcodeCoordinates = detect(multiple, bitMatrix);
  if (barcodeCoordinates.isEmpty()) {
    bitMatrix = bitMatrix.clone();
    bitMatrix.rotate180();
    barcodeCoordinates = detect(multiple, bitMatrix);
  }
  return new PDF417DetectorResult(bitMatrix, barcodeCoordinates);
}
 

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        Map<DecodeHintType,?> hints) throws NotFoundException {
  for (OneDReader reader : readers) {
    try {
      return reader.decodeRow(rowNumber, row, hints);
    } catch (ReaderException re) {
      // continue
    }
  }

  throw NotFoundException.getNotFoundInstance();
}
 

public DecoderResult decode(BitMatrix bits,
                            Map<DecodeHintType,?> hints) throws FormatException, ChecksumException {
  BitMatrixParser parser = new BitMatrixParser(bits);
  byte[] codewords = parser.readCodewords();

  correctErrors(codewords, 0, 10, 10, ALL);
  int mode = codewords[0] & 0x0F;
  byte[] datawords;
  switch (mode) {
    case 2:
    case 3:
    case 4:
      correctErrors(codewords, 20, 84, 40, EVEN);
      correctErrors(codewords, 20, 84, 40, ODD);
      datawords = new byte[94];
      break;
    case 5:
      correctErrors(codewords, 20, 68, 56, EVEN);
      correctErrors(codewords, 20, 68, 56, ODD);
      datawords = new byte[78];
      break;
    default:
      throw FormatException.getFormatInstance();
  }

  System.arraycopy(codewords, 0, datawords, 0, 10);
  System.arraycopy(codewords, 20, datawords, 10, datawords.length - 10);

  return DecodedBitStreamParser.decode(datawords, mode);
}
 

/**
 * <p>Detects a QR Code in an image.</p>
 *
 * @param hints optional hints to detector
 * @return {@link DetectorResult} encapsulating results of detecting a QR Code
 * @throws NotFoundException if QR Code cannot be found
 * @throws FormatException if a QR Code cannot be decoded
 */
public final DetectorResult detect(Map<DecodeHintType,?> hints) throws NotFoundException, FormatException {

  resultPointCallback = hints == null ? null :
      (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);

  FinderPatternFinder finder = new FinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo info = finder.find(hints);

  return processFinderPatternInfo(info);
}
 

DecodeHandler(QrCodeActivity activity) {
    this.mActivity = activity;
    mMultiFormatReader = new MultiFormatReader();
    mHints = new Hashtable<>();
    mHints.put(DecodeHintType.CHARACTER_SET, "utf-8");
    mHints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);
    Collection<BarcodeFormat> barcodeFormats = new ArrayList<>();
    barcodeFormats.add(BarcodeFormat.QR_CODE);
    barcodeFormats.add(BarcodeFormat.CODE_39);
    barcodeFormats.add(BarcodeFormat.CODE_93);
    barcodeFormats.add(BarcodeFormat.CODE_128);
    mHints.put(DecodeHintType.POSSIBLE_FORMATS, barcodeFormats);
}
 

@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException, FormatException,
    ChecksumException {
  Result[] result = decode(image, hints, false);
  if (result == null || result.length == 0 || result[0] == null) {
    throw NotFoundException.getNotFoundInstance();
  }
  return result[0];
}
 

@Override
public Result[] decodeMultiple(BinaryBitmap image, Map<DecodeHintType,?> hints) throws NotFoundException {
  List<Result> results = new ArrayList<>();
  DetectorResult[] detectorResults = new MultiDetector(image.getBlackMatrix()).detectMulti(hints);
  for (DetectorResult detectorResult : detectorResults) {
    try {
      DecoderResult decoderResult = getDecoder().decode(detectorResult.getBits(), hints);
      ResultPoint[] points = detectorResult.getPoints();
      // If the code was mirrored: swap the bottom-left and the top-right points.
      if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
        ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
      }
      Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points,
                                 BarcodeFormat.QR_CODE);
      List<byte[]> byteSegments = decoderResult.getByteSegments();
      if (byteSegments != null) {
        result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
      }
      String ecLevel = decoderResult.getECLevel();
      if (ecLevel != null) {
        result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
      }
      if (decoderResult.hasStructuredAppend()) {
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
                           decoderResult.getStructuredAppendSequenceNumber());
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY,
                           decoderResult.getStructuredAppendParity());
      }
      results.add(result);
    } catch (ReaderException re) {
      // ignore and continue 
    }
  }
  if (results.isEmpty()) {
    return EMPTY_RESULT_ARRAY;
  } else {
    results = processStructuredAppend(results);
    return results.toArray(new Result[results.size()]);
  }
}
 

public DecodeThread(CaptureActivity activity, int decodeMode) {

        this.activity = activity;
        handlerInitLatch = new CountDownLatch(1);

        hints = new EnumMap<DecodeHintType, Object>(DecodeHintType.class);

        Collection<BarcodeFormat> decodeFormats = new ArrayList<BarcodeFormat>();
        decodeFormats.addAll(EnumSet.of(BarcodeFormat.AZTEC));
        decodeFormats.addAll(EnumSet.of(BarcodeFormat.PDF_417));

        switch (decodeMode) {
            case BARCODE_MODE:
                decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
                break;

            case QRCODE_MODE:
                decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
                break;

            case ALL_MODE:
                decodeFormats.addAll(DecodeFormatManager.getBarCodeFormats());
                decodeFormats.addAll(DecodeFormatManager.getQrCodeFormats());
                break;

            default:
                break;
        }

        hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
    }
 

/**
 * <p>Convenience method that can decode a QR Code represented as a 2D array of booleans.
 * "true" is taken to mean a black module.</p>
 *
 * @param image booleans representing white/black QR Code modules
 * @return text and bytes encoded within the QR Code
 * @throws FormatException if the QR Code cannot be decoded
 * @throws ChecksumException if error correction fails
 */
public DecoderResult decode(boolean[][] image, Map<DecodeHintType,?> hints)
    throws ChecksumException, FormatException {
  int dimension = image.length;
  BitMatrix bits = new BitMatrix(dimension);
  for (int i = 0; i < dimension; i++) {
    for (int j = 0; j < dimension; j++) {
      if (image[i][j]) {
        bits.set(j, i);
      }
    }
  }
  return decode(bits, hints);
}
 

@NonNull
private static MultiFormatReader createReader(@Nullable final Map<DecodeHintType, ?> hints) {
    final MultiFormatReader reader = new MultiFormatReader();
    if (hints != null) {
        reader.setHints(hints);
    } else {
        reader.setHints(Collections
                .singletonMap(DecodeHintType.POSSIBLE_FORMATS, CodeScanner.ALL_FORMATS));
    }
    return reader;
}
 

/**
 * <p>Detects a QR Code in an image.</p>
 *
 * @param hints optional hints to detector
 * @return {@link DetectorResult} encapsulating results of detecting a QR Code
 * @throws NotFoundException if QR Code cannot be found
 * @throws FormatException if a QR Code cannot be decoded
 */
public final DetectorResult detect(Map<DecodeHintType,?> hints) throws NotFoundException, FormatException {

  resultPointCallback = hints == null ? null :
      (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);

  FinderPatternFinder finder = new FinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo info = finder.find(hints);

  return processFinderPatternInfo(info);
}
 

private void decode(final byte[] data)
{
    final PlanarYUVLuminanceSource source = cameraManager.buildLuminanceSource(data);
    final BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

    try {
        hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK,
                  (ResultPointCallback) dot -> runOnUiThread(() -> scannerView.addDot(dot)));
        final Result scanResult = reader.decode(bitmap, hints);

        final int thumbnailWidth = source.getThumbnailWidth();
        final int thumbnailHeight = source.getThumbnailHeight();
        final float thumbnailScaleFactor = (float) thumbnailWidth / source.getWidth();

        final Bitmap thumbnailImage = Bitmap.createBitmap(thumbnailWidth, thumbnailHeight,
                                                          Bitmap.Config.ARGB_8888);
        thumbnailImage.setPixels(
            source.renderThumbnail(), 0, thumbnailWidth, 0, 0, thumbnailWidth, thumbnailHeight);

        runOnUiThread(() -> handleResult(scanResult, thumbnailImage, thumbnailScaleFactor));
    } catch (final ReaderException x) {
        // retry
        cameraHandler.post(fetchAndDecodeRunnable);
    } finally {
        reader.reset();
    }
}
 

@Override
public final Result decode(BinaryBitmap image, Map<DecodeHintType,?> hints)
    throws NotFoundException, ChecksumException, FormatException {
  DecoderResult decoderResult;
  ResultPoint[] points;
  if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
    BitMatrix bits = extractPureBits(image.getBlackMatrix());
    decoderResult = decoder.decode(bits, hints);
    points = NO_POINTS;
  } else {
    DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect(hints);
    decoderResult = decoder.decode(detectorResult.getBits(), hints);
    points = detectorResult.getPoints();
  }

  // If the code was mirrored: swap the bottom-left and the top-right points.
  if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
    ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
  }

  Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);
  List<byte[]> byteSegments = decoderResult.getByteSegments();
  if (byteSegments != null) {
    result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
  }
  String ecLevel = decoderResult.getECLevel();
  if (ecLevel != null) {
    result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
  }
  if (decoderResult.hasStructuredAppend()) {
    result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE,
                       decoderResult.getStructuredAppendSequenceNumber());
    result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY,
                       decoderResult.getStructuredAppendParity());
  }
  return result;
}
 

/**
 * <p>Detects a QR Code in an image.</p>
 *
 * @param hints optional hints to detector
 * @return {@link DetectorResult} encapsulating results of detecting a QR Code
 * @throws NotFoundException if QR Code cannot be found
 * @throws FormatException if a QR Code cannot be decoded
 */
public final DetectorResult detect(Map<DecodeHintType,?> hints) throws NotFoundException, FormatException {

  resultPointCallback = hints == null ? null :
      (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);

  FinderPatternFinder finder = new FinderPatternFinder(image, resultPointCallback);
  FinderPatternInfo info = finder.find(hints);

  return processFinderPatternInfo(info);
}
 

@Override
public Result decode(BinaryBitmap image,
                     Map<DecodeHintType,?> hints) throws NotFoundException, FormatException {
  try {
    return doDecode(image, hints);
  } catch (NotFoundException nfe) {
    boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
    if (tryHarder && image.isRotateSupported()) {
      BinaryBitmap rotatedImage = image.rotateCounterClockwise();
      Result result = doDecode(rotatedImage, hints);
      // Record that we found it rotated 90 degrees CCW / 270 degrees CW
      Map<ResultMetadataType,?> metadata = result.getResultMetadata();
      int orientation = 270;
      if (metadata != null && metadata.containsKey(ResultMetadataType.ORIENTATION)) {
        // But if we found it reversed in doDecode(), add in that result here:
        orientation = (orientation +
            (Integer) metadata.get(ResultMetadataType.ORIENTATION)) % 360;
      }
      result.putMetadata(ResultMetadataType.ORIENTATION, orientation);
      // Update result points
      ResultPoint[] points = result.getResultPoints();
      if (points != null) {
        int height = rotatedImage.getHeight();
        for (int i = 0; i < points.length; i++) {
          points[i] = new ResultPoint(height - points[i].getY() - 1, points[i].getX());
        }
      }
      return result;
    } else {
      throw nfe;
    }
  }
}
 

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        Map<DecodeHintType,?> hints) throws NotFoundException {
  Pair leftPair = decodePair(row, false, rowNumber, hints);
  addOrTally(possibleLeftPairs, leftPair);
  row.reverse();
  Pair rightPair = decodePair(row, true, rowNumber, hints);
  addOrTally(possibleRightPairs, rightPair);
  row.reverse();
  int lefSize = possibleLeftPairs.size();
  for (int i = 0; i < lefSize; i++) {
    Pair left = possibleLeftPairs.get(i);
    if (left.getCount() > 1) {
      int rightSize = possibleRightPairs.size();
      for (int j = 0; j < rightSize; j++) {
        Pair right = possibleRightPairs.get(j);
        if (right.getCount() > 1) {
          if (checkChecksum(left, right)) {
            return constructResult(left, right);
          }
        }
      }
    }
  }
  throw NotFoundException.getNotFoundInstance();
}
 

@Override
public Result decodeRow(int rowNumber,
                        BitArray row,
                        int[] startGuardRange,
                        Map<DecodeHintType,?> hints)
    throws NotFoundException, FormatException, ChecksumException {
  return maybeReturnResult(ean13Reader.decodeRow(rowNumber, row, startGuardRange, hints));
}
 

DecodeThread(CaptureActivity activity,
               Collection<BarcodeFormat> decodeFormats,
               Map<DecodeHintType,?> baseHints,
               String characterSet,
               ResultPointCallback resultPointCallback) {

    this.activity = activity;
    handlerInitLatch = new CountDownLatch(1);

    hints = new EnumMap<DecodeHintType,Object>(DecodeHintType.class);
    if (baseHints != null) {
      hints.putAll(baseHints);
    }

    // The prefs can't change while the thread is running, so pick them up once here.
    if (decodeFormats == null || decodeFormats.isEmpty()) {
      SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(activity);
      decodeFormats = EnumSet.noneOf(BarcodeFormat.class);
      // TODO: Make configurable?
//      if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_1D, false)) {
//        decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
//      }
//      if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_QR, false)) {
//        decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
//      }
//      if (prefs.getBoolean(PreferencesActivity.KEY_DECODE_DATA_MATRIX, false)) {
//        decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
//      }
    }
    hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);

    if (characterSet != null) {
      hints.put(DecodeHintType.CHARACTER_SET, characterSet);
    }
    hints.put(DecodeHintType.NEED_RESULT_POINT_CALLBACK, resultPointCallback);
    Log.i("DecodeThread", "Hints: " + hints);
  }