Examples with BitMatrix com.google.zxing.common.BitMatrix used on opensource projects

Example 56 with BitMatrix

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

the class Decoder method decode.

/**
   * <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
   * @param hints decoding hints that should be used to influence decoding
   * @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);
}

Example 57 with BitMatrix

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

the class Version method buildFunctionPattern.

/**
   * See ISO 18004:2006 Annex E
   */
BitMatrix buildFunctionPattern() {
    int dimension = getDimensionForVersion();
    BitMatrix bitMatrix = new BitMatrix(dimension);
    // Top left finder pattern + separator + format
    bitMatrix.setRegion(0, 0, 9, 9);
    // Top right finder pattern + separator + format
    bitMatrix.setRegion(dimension - 8, 0, 8, 9);
    // Bottom left finder pattern + separator + format
    bitMatrix.setRegion(0, dimension - 8, 9, 8);
    // Alignment patterns
    int max = alignmentPatternCenters.length;
    for (int x = 0; x < max; x++) {
        int i = alignmentPatternCenters[x] - 2;
        for (int y = 0; y < max; y++) {
            if ((x == 0 && (y == 0 || y == max - 1)) || (x == max - 1 && y == 0)) {
                // No alignment patterns near the three finder paterns
                continue;
            }
            bitMatrix.setRegion(alignmentPatternCenters[y] - 2, i, 5, 5);
        }
    }
    // Vertical timing pattern
    bitMatrix.setRegion(6, 9, 1, dimension - 17);
    // Horizontal timing pattern
    bitMatrix.setRegion(9, 6, dimension - 17, 1);
    if (versionNumber > 6) {
        // Version info, top right
        bitMatrix.setRegion(dimension - 11, 0, 3, 6);
        // Version info, bottom left
        bitMatrix.setRegion(0, dimension - 11, 6, 3);
    }
    return bitMatrix;
}

Example 58 with BitMatrix

use of com.google.zxing.common.BitMatrix in project Conversations by siacs.

the class BarcodeProvider method create2dBarcodeBitmap.

public static Bitmap create2dBarcodeBitmap(String input, int size) {
    try {
        final QRCodeWriter barcodeWriter = new QRCodeWriter();
        final Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
        final BitMatrix result = barcodeWriter.encode(input, BarcodeFormat.QR_CODE, size, size, hints);
        final int width = result.getWidth();
        final int height = result.getHeight();
        final int[] pixels = new int[width * height];
        for (int y = 0; y < height; y++) {
            final int offset = y * width;
            for (int x = 0; x < width; x++) {
                pixels[offset + x] = result.get(x, y) ? Color.BLACK : Color.WHITE;
            }
        }
        final Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, width, 0, 0, width, height);
        return bitmap;
    } catch (final Exception e) {
        e.printStackTrace();
        return null;
    }
}

Example 59 with BitMatrix

use of com.google.zxing.common.BitMatrix in project smartmodule by carozhu.

the class GenerateQrcodePIcHelper method createQRCodeWithLogo.

/**
     * 生成带logo的二维码，logo默认为二维码的1/5
     *
     * @param text    需要生成二维码的文字、网址等
     * @param size    需要生成二维码的大小（）
     * @param mBitmap logo文件
     * @return bitmap
     */
public static Bitmap createQRCodeWithLogo(String text, int size, Bitmap mBitmap) {
    try {
        IMAGE_HALFWIDTH = size / 10;
        Hashtable<EncodeHintType, Object> hints = new Hashtable<>();
        hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
        /*
             * 设置容错级别，默认为ErrorCorrectionLevel.L
             * 因为中间加入logo所以建议你把容错级别调至H,否则可能会出现识别不了
             */
        hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
        BitMatrix bitMatrix = new QRCodeWriter().encode(text, BarcodeFormat.QR_CODE, size, size, hints);
        //矩阵高度
        int width = bitMatrix.getWidth();
        //矩阵宽度
        int height = bitMatrix.getHeight();
        int halfW = width / 2;
        int halfH = height / 2;
        Matrix m = new Matrix();
        float sx = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getWidth();
        float sy = (float) 2 * IMAGE_HALFWIDTH / mBitmap.getHeight();
        m.setScale(sx, sy);
        //设置缩放信息
        //将logo图片按martix设置的信息缩放
        mBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap.getWidth(), mBitmap.getHeight(), m, false);
        int[] pixels = new int[size * size];
        for (int y = 0; y < size; y++) {
            for (int x = 0; x < size; x++) {
                if (x > halfW - IMAGE_HALFWIDTH && x < halfW + IMAGE_HALFWIDTH && y > halfH - IMAGE_HALFWIDTH && y < halfH + IMAGE_HALFWIDTH) {
                    //该位置用于存放图片信息
                    //记录图片每个像素信息
                    pixels[y * width + x] = mBitmap.getPixel(x - halfW + IMAGE_HALFWIDTH, y - halfH + IMAGE_HALFWIDTH);
                } else {
                    if (bitMatrix.get(x, y)) {
                        pixels[y * size + x] = 0xff000000;
                    } else {
                        //灰色-- 0xEEEEEEEE md_grey_200
                        pixels[y * size + x] = 0xFFFFFFFF;
                    }
                }
            }
        }
        Bitmap bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888);
        bitmap.setPixels(pixels, 0, size, 0, 0, size, size);
        return bitmap;
    } catch (WriterException e) {
        e.printStackTrace();
        return null;
    }
}

Example 60 with BitMatrix

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

the class MultiFinderPatternFinder method findMulti.

public FinderPatternInfo[] findMulti(Map<DecodeHintType, ?> hints) throws NotFoundException {
    boolean tryHarder = hints != null && hints.containsKey(DecodeHintType.TRY_HARDER);
    boolean pureBarcode = hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE);
    BitMatrix image = getImage();
    int maxI = image.getHeight();
    int maxJ = image.getWidth();
    // We are looking for black/white/black/white/black modules in
    // 1:1:3:1:1 ratio; this tracks the number of such modules seen so far
    // Let's assume that the maximum version QR Code we support takes up 1/4 the height of the
    // image, and then account for the center being 3 modules in size. This gives the smallest
    // number of pixels the center could be, so skip this often. When trying harder, look for all
    // QR versions regardless of how dense they are.
    int iSkip = (int) (maxI / (MAX_MODULES * 4.0f) * 3);
    if (iSkip < MIN_SKIP || tryHarder) {
        iSkip = MIN_SKIP;
    }
    int[] stateCount = new int[5];
    for (int i = iSkip - 1; i < maxI; i += iSkip) {
        // Get a row of black/white values
        stateCount[0] = 0;
        stateCount[1] = 0;
        stateCount[2] = 0;
        stateCount[3] = 0;
        stateCount[4] = 0;
        int currentState = 0;
        for (int j = 0; j < maxJ; j++) {
            if (image.get(j, i)) {
                // Black pixel
                if ((currentState & 1) == 1) {
                    // Counting white pixels
                    currentState++;
                }
                stateCount[currentState]++;
            } else {
                // White pixel
                if ((currentState & 1) == 0) {
                    // Counting black pixels
                    if (currentState == 4) {
                        // A winner?
                        if (foundPatternCross(stateCount) && handlePossibleCenter(stateCount, i, j, pureBarcode)) {
                            // Yes
                            // Clear state to start looking again
                            currentState = 0;
                            stateCount[0] = 0;
                            stateCount[1] = 0;
                            stateCount[2] = 0;
                            stateCount[3] = 0;
                            stateCount[4] = 0;
                        } else {
                            // No, shift counts back by two
                            stateCount[0] = stateCount[2];
                            stateCount[1] = stateCount[3];
                            stateCount[2] = stateCount[4];
                            stateCount[3] = 1;
                            stateCount[4] = 0;
                            currentState = 3;
                        }
                    } else {
                        stateCount[++currentState]++;
                    }
                } else {
                    // Counting white pixels
                    stateCount[currentState]++;
                }
            }
        }
        if (foundPatternCross(stateCount)) {
            handlePossibleCenter(stateCount, i, maxJ, pureBarcode);
        }
    // end if foundPatternCross
    }
    // for i=iSkip-1 ...
    FinderPattern[][] patternInfo = selectMutipleBestPatterns();
    List<FinderPatternInfo> result = new ArrayList<>();
    for (FinderPattern[] pattern : patternInfo) {
        ResultPoint.orderBestPatterns(pattern);
        result.add(new FinderPatternInfo(pattern));
    }
    if (result.isEmpty()) {
        return EMPTY_RESULT_ARRAY;
    } else {
        return result.toArray(new FinderPatternInfo[result.size()]);
    }
}