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

Example 81 with ResultPoint

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

the class BarcodeViewDecoder method waitForBarcode.

public LiveData<BarcodeResult> waitForBarcode(DecoratedBarcodeView view) {
    MutableLiveData<BarcodeResult> liveData = new MutableLiveData<>();
    view.decodeContinuous(new BarcodeCallback() {

        @Override
        public void barcodeResult(BarcodeResult result) {
            liveData.setValue(result);
        }

        @Override
        public void possibleResultPoints(List<ResultPoint> resultPoints) {
        }
    });
    return liveData;
}

Example 82 with ResultPoint

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

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(), decoderResult.getNumBits(), points, BarcodeFormat.AZTEC, System.currentTimeMillis());
    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 83 with ResultPoint

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

the class Detector method detect.

/**
 * Detects an Aztec Code in an image.
 *
 * @param isMirror if true, image is a mirror-image of original
 * @return {@link AztecDetectorResult} encapsulating results of detecting an Aztec Code
 * @throws NotFoundException if no Aztec Code can be found
 */
public AztecDetectorResult detect(boolean isMirror) throws NotFoundException {
    // 1. Get the center of the aztec matrix
    Point pCenter = getMatrixCenter();
    // 2. Get the center points of the four diagonal points just outside the bull's eye
    // [topRight, bottomRight, bottomLeft, topLeft]
    ResultPoint[] bullsEyeCorners = getBullsEyeCorners(pCenter);
    if (isMirror) {
        ResultPoint temp = bullsEyeCorners[0];
        bullsEyeCorners[0] = bullsEyeCorners[2];
        bullsEyeCorners[2] = temp;
    }
    // 3. Get the size of the matrix and other parameters from the bull's eye
    extractParameters(bullsEyeCorners);
    // 4. Sample the grid
    BitMatrix bits = sampleGrid(image, bullsEyeCorners[shift % 4], bullsEyeCorners[(shift + 1) % 4], bullsEyeCorners[(shift + 2) % 4], bullsEyeCorners[(shift + 3) % 4]);
    // 5. Get the corners of the matrix.
    ResultPoint[] corners = getMatrixCornerPoints(bullsEyeCorners);
    return new AztecDetectorResult(bits, corners, compact, nbDataBlocks, nbLayers);
}

Example 84 with ResultPoint

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

the class Detector method extractParameters.

/**
 * Extracts the number of data layers and data blocks from the layer around the bull's eye.
 *
 * @param bullsEyeCorners the array of bull's eye corners
 * @throws NotFoundException in case of too many errors or invalid parameters
 */
private void extractParameters(ResultPoint[] bullsEyeCorners) throws NotFoundException {
    if (!isValid(bullsEyeCorners[0]) || !isValid(bullsEyeCorners[1]) || !isValid(bullsEyeCorners[2]) || !isValid(bullsEyeCorners[3])) {
        throw NotFoundException.getNotFoundInstance();
    }
    int length = 2 * nbCenterLayers;
    // Get the bits around the bull's eye
    int[] sides = { // Right side
    sampleLine(bullsEyeCorners[0], bullsEyeCorners[1], length), // Bottom
    sampleLine(bullsEyeCorners[1], bullsEyeCorners[2], length), // Left side
    sampleLine(bullsEyeCorners[2], bullsEyeCorners[3], length), // Top
    sampleLine(bullsEyeCorners[3], bullsEyeCorners[0], length) };
    // bullsEyeCorners[shift] is the corner of the bulls'eye that has three
    // orientation marks.
    // sides[shift] is the row/column that goes from the corner with three
    // orientation marks to the corner with two.
    shift = getRotation(sides, length);
    // Flatten the parameter bits into a single 28- or 40-bit long
    long parameterData = 0;
    for (int i = 0; i < 4; i++) {
        int side = sides[(shift + i) % 4];
        if (compact) {
            // Each side of the form ..XXXXXXX. where Xs are parameter data
            parameterData <<= 7;
            parameterData += (side >> 1) & 0x7F;
        } else {
            // Each side of the form ..XXXXX.XXXXX. where Xs are parameter data
            parameterData <<= 10;
            parameterData += ((side >> 2) & (0x1f << 5)) + ((side >> 1) & 0x1F);
        }
    }
    // Corrects parameter data using RS.  Returns just the data portion
    // without the error correction.
    int correctedData = getCorrectedParameterData(parameterData, compact);
    if (compact) {
        // 8 bits:  2 bits layers and 6 bits data blocks
        nbLayers = (correctedData >> 6) + 1;
        nbDataBlocks = (correctedData & 0x3F) + 1;
    } else {
        // 16 bits:  5 bits layers and 11 bits data blocks
        nbLayers = (correctedData >> 11) + 1;
        nbDataBlocks = (correctedData & 0x7FF) + 1;
    }
}

Example 85 with ResultPoint

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

the class ViewfinderView method onDraw.

@SuppressLint("DrawAllocation")
@Override
public void onDraw(Canvas canvas) {
    if (cameraManager == null) {
        // not ready yet, early draw before done configuring
        return;
    }
    Rect frame = cameraManager.getFramingRect();
    Rect previewFrame = cameraManager.getFramingRectInPreview();
    if (frame == null || previewFrame == null) {
        return;
    }
    int width = canvas.getWidth();
    int height = canvas.getHeight();
    // Draw the exterior (i.e. outside the framing rect) darkened
    paint.setColor(resultBitmap != null ? resultColor : maskColor);
    canvas.drawRect(0, 0, width, frame.top, paint);
    canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, paint);
    canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1, paint);
    canvas.drawRect(0, frame.bottom + 1, width, height, paint);
    if (resultBitmap != null) {
        // Draw the opaque result bitmap over the scanning rectangle
        paint.setAlpha(CURRENT_POINT_OPACITY);
        canvas.drawBitmap(resultBitmap, null, frame, paint);
    } else {
        // Draw a red "laser scanner" line through the middle to show decoding is active
        paint.setColor(laserColor);
        paint.setAlpha(SCANNER_ALPHA[scannerAlpha]);
        scannerAlpha = (scannerAlpha + 1) % SCANNER_ALPHA.length;
        int middle = frame.height() / 2 + frame.top;
        canvas.drawRect(frame.left + 2, middle - 1, frame.right - 1, middle + 2, paint);
        float scaleX = frame.width() / (float) previewFrame.width();
        float scaleY = frame.height() / (float) previewFrame.height();
        List<ResultPoint> currentPossible = possibleResultPoints;
        List<ResultPoint> currentLast = lastPossibleResultPoints;
        int frameLeft = frame.left;
        int frameTop = frame.top;
        if (currentPossible.isEmpty()) {
            lastPossibleResultPoints = null;
        } else {
            possibleResultPoints = new ArrayList<>(5);
            lastPossibleResultPoints = currentPossible;
            paint.setAlpha(CURRENT_POINT_OPACITY);
            paint.setColor(resultPointColor);
            synchronized (currentPossible) {
                for (ResultPoint point : currentPossible) {
                    canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX), frameTop + (int) (point.getY() * scaleY), POINT_SIZE, paint);
                }
            }
        }
        if (currentLast != null) {
            paint.setAlpha(CURRENT_POINT_OPACITY / 2);
            paint.setColor(resultPointColor);
            synchronized (currentLast) {
                float radius = POINT_SIZE / 2.0f;
                for (ResultPoint point : currentLast) {
                    canvas.drawCircle(frameLeft + (int) (point.getX() * scaleX), frameTop + (int) (point.getY() * scaleY), radius, paint);
                }
            }
        }
        // Request another update at the animation interval, but only repaint the laser line,
        // not the entire viewfinder mask.
        postInvalidateDelayed(ANIMATION_DELAY, frame.left - POINT_SIZE, frame.top - POINT_SIZE, frame.right + POINT_SIZE, frame.bottom + POINT_SIZE);
    }
}