Examples with NotFoundException com.google.zxing.NotFoundException used on opensource projects

Example 36 with NotFoundException

use of com.google.zxing.NotFoundException in project weex-example by KalicyZhou.

the class AztecReader method decode.

@Override
public Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints) throws NotFoundException, FormatException {
    NotFoundException notFoundException = null;
    FormatException formatException = null;
    Detector detector = new Detector(image.getBlackMatrix());
    ResultPoint[] points = null;
    DecoderResult decoderResult = null;
    try {
        AztecDetectorResult detectorResult = detector.detect(false);
        points = detectorResult.getPoints();
        decoderResult = new Decoder().decode(detectorResult);
    } catch (NotFoundException e) {
        notFoundException = e;
    } catch (FormatException e) {
        formatException = e;
    }
    if (decoderResult == null) {
        try {
            AztecDetectorResult detectorResult = detector.detect(true);
            points = detectorResult.getPoints();
            decoderResult = new Decoder().decode(detectorResult);
        } catch (NotFoundException | FormatException e) {
            if (notFoundException != null) {
                throw notFoundException;
            }
            if (formatException != null) {
                throw formatException;
            }
            throw e;
        }
    }
    if (hints != null) {
        ResultPointCallback rpcb = (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
        if (rpcb != null) {
            for (ResultPoint point : points) {
                rpcb.foundPossibleResultPoint(point);
            }
        }
    }
    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.AZTEC);
    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;
}

Example 37 with NotFoundException

use of com.google.zxing.NotFoundException in project weex-example by KalicyZhou.

the class RSS14Reader method decodePair.

private Pair decodePair(BitArray row, boolean right, int rowNumber, Map<DecodeHintType, ?> hints) {
    try {
        int[] startEnd = findFinderPattern(row, 0, right);
        FinderPattern pattern = parseFoundFinderPattern(row, rowNumber, right, startEnd);
        ResultPointCallback resultPointCallback = hints == null ? null : (ResultPointCallback) hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
        if (resultPointCallback != null) {
            float center = (startEnd[0] + startEnd[1]) / 2.0f;
            if (right) {
                // row is actually reversed
                center = row.getSize() - 1 - center;
            }
            resultPointCallback.foundPossibleResultPoint(new ResultPoint(center, rowNumber));
        }
        DataCharacter outside = decodeDataCharacter(row, pattern, true);
        DataCharacter inside = decodeDataCharacter(row, pattern, false);
        return new Pair(1597 * outside.getValue() + inside.getValue(), outside.getChecksumPortion() + 4 * inside.getChecksumPortion(), pattern);
    } catch (NotFoundException ignored) {
        return null;
    }
}

Example 38 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

the class Detector method processFinderPatternInfo.

protected final DetectorResult processFinderPatternInfo(FinderPatternInfo info) throws NotFoundException, FormatException {
    FinderPattern topLeft = info.getTopLeft();
    FinderPattern topRight = info.getTopRight();
    FinderPattern bottomLeft = info.getBottomLeft();
    float moduleSize = calculateModuleSize(topLeft, topRight, bottomLeft);
    if (moduleSize < 1.0f) {
        throw NotFoundException.getNotFoundInstance();
    }
    int dimension = computeDimension(topLeft, topRight, bottomLeft, moduleSize);
    Version provisionalVersion = Version.getProvisionalVersionForDimension(dimension);
    int modulesBetweenFPCenters = provisionalVersion.getDimensionForVersion() - 7;
    AlignmentPattern alignmentPattern = null;
    // Anything above version 1 has an alignment pattern
    if (provisionalVersion.getAlignmentPatternCenters().length > 0) {
        // Guess where a "bottom right" finder pattern would have been
        float bottomRightX = topRight.getX() - topLeft.getX() + bottomLeft.getX();
        float bottomRightY = topRight.getY() - topLeft.getY() + bottomLeft.getY();
        // Estimate that alignment pattern is closer by 3 modules
        // from "bottom right" to known top left location
        float correctionToTopLeft = 1.0f - 3.0f / modulesBetweenFPCenters;
        int estAlignmentX = (int) (topLeft.getX() + correctionToTopLeft * (bottomRightX - topLeft.getX()));
        int estAlignmentY = (int) (topLeft.getY() + correctionToTopLeft * (bottomRightY - topLeft.getY()));
        // Kind of arbitrary -- expand search radius before giving up
        for (int i = 4; i <= 16; i <<= 1) {
            try {
                alignmentPattern = findAlignmentInRegion(moduleSize, estAlignmentX, estAlignmentY, i);
                break;
            } catch (NotFoundException re) {
            // try next round
            }
        }
    // If we didn't find alignment pattern... well try anyway without it
    }
    PerspectiveTransform transform = createTransform(topLeft, topRight, bottomLeft, alignmentPattern, dimension);
    BitMatrix bits = sampleGrid(image, transform, dimension);
    ResultPoint[] points;
    if (alignmentPattern == null) {
        points = new ResultPoint[] { bottomLeft, topLeft, topRight };
    } else {
        points = new ResultPoint[] { bottomLeft, topLeft, topRight, alignmentPattern };
    }
    return new DetectorResult(bits, points);
}

Example 39 with NotFoundException

use of com.google.zxing.NotFoundException in project collect by opendatakit.

the class ShowQRCodeFragment method onActivityResult.

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    IntentResult result = IntentIntegrator.parseActivityResult(requestCode, resultCode, data);
    if (result != null) {
        if (result.getContents() == null) {
            // request was canceled...
            Timber.i("QR code scanning cancelled");
        } else {
            try {
                applySettings(CompressionUtils.decompress(result.getContents()));
            } catch (IOException | DataFormatException e) {
                Timber.e(e);
            }
            return;
        }
    }
    if (requestCode == SELECT_PHOTO) {
        if (resultCode == Activity.RESULT_OK) {
            try {
                final Uri imageUri = data.getData();
                final InputStream imageStream = getActivity().getContentResolver().openInputStream(imageUri);
                final Bitmap bitmap = BitmapFactory.decodeStream(imageStream);
                String response = QRCodeUtils.decodeFromBitmap(bitmap);
                if (response != null) {
                    applySettings(response);
                }
            } catch (FormatException | NotFoundException | ChecksumException e) {
                Timber.i(e);
                ToastUtils.showLongToast("QR Code not found in the selected image");
            } catch (IOException e) {
                Timber.e(e);
                ToastUtils.showLongToast("Unable to read the settings");
            } catch (DataFormatException e) {
                Timber.e(e);
                ToastUtils.showShortToast(getString(R.string.invalid_qrcode));
            }
        } else {
            Timber.i("Choosing QR code from sdcard cancelled");
        }
    }
}

Example 40 with NotFoundException

use of com.google.zxing.NotFoundException in project android-zxing by PearceXu.

the class Detector method getMatrixCenter.

/**
 * Finds a candidate center point of an Aztec code from an image
 *
 * @return the center point
 */
private Point getMatrixCenter() {
    ResultPoint pointA;
    ResultPoint pointB;
    ResultPoint pointC;
    ResultPoint pointD;
    // Get a white rectangle that can be the border of the matrix in center bull's eye or
    try {
        ResultPoint[] cornerPoints = new WhiteRectangleDetector(image).detect();
        pointA = cornerPoints[0];
        pointB = cornerPoints[1];
        pointC = cornerPoints[2];
        pointD = cornerPoints[3];
    } catch (NotFoundException e) {
        // This exception can be in case the initial rectangle is white
        // In that case, surely in the bull's eye, we try to expand the rectangle.
        int cx = image.getWidth() / 2;
        int cy = image.getHeight() / 2;
        pointA = getFirstDifferent(new Point(cx + 7, cy - 7), false, 1, -1).toResultPoint();
        pointB = getFirstDifferent(new Point(cx + 7, cy + 7), false, 1, 1).toResultPoint();
        pointC = getFirstDifferent(new Point(cx - 7, cy + 7), false, -1, 1).toResultPoint();
        pointD = getFirstDifferent(new Point(cx - 7, cy - 7), false, -1, -1).toResultPoint();
    }
    // Compute the center of the rectangle
    int cx = MathUtils.round((pointA.getX() + pointD.getX() + pointB.getX() + pointC.getX()) / 4.0f);
    int cy = MathUtils.round((pointA.getY() + pointD.getY() + pointB.getY() + pointC.getY()) / 4.0f);
    // in order to compute a more accurate center.
    try {
        ResultPoint[] cornerPoints = new WhiteRectangleDetector(image, 15, cx, cy).detect();
        pointA = cornerPoints[0];
        pointB = cornerPoints[1];
        pointC = cornerPoints[2];
        pointD = cornerPoints[3];
    } catch (NotFoundException e) {
        // This exception can be in case the initial rectangle is white
        // In that case we try to expand the rectangle.
        pointA = getFirstDifferent(new Point(cx + 7, cy - 7), false, 1, -1).toResultPoint();
        pointB = getFirstDifferent(new Point(cx + 7, cy + 7), false, 1, 1).toResultPoint();
        pointC = getFirstDifferent(new Point(cx - 7, cy + 7), false, -1, 1).toResultPoint();
        pointD = getFirstDifferent(new Point(cx - 7, cy - 7), false, -1, -1).toResultPoint();
    }
    // Recompute the center of the rectangle
    cx = MathUtils.round((pointA.getX() + pointD.getX() + pointB.getX() + pointC.getX()) / 4.0f);
    cy = MathUtils.round((pointA.getY() + pointD.getY() + pointB.getY() + pointC.getY()) / 4.0f);
    return new Point(cx, cy);
}