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

Example 1 with FormatException

use of com.google.zxing.FormatException in project zxing by zxing.

the class DecodeServlet method processImage.

private static void processImage(BufferedImage image, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
    LuminanceSource source = new BufferedImageLuminanceSource(image);
    BinaryBitmap bitmap = new BinaryBitmap(new GlobalHistogramBinarizer(source));
    Collection<Result> results = new ArrayList<>(1);
    try {
        Reader reader = new MultiFormatReader();
        ReaderException savedException = null;
        try {
            // Look for multiple barcodes
            MultipleBarcodeReader multiReader = new GenericMultipleBarcodeReader(reader);
            Result[] theResults = multiReader.decodeMultiple(bitmap, HINTS);
            if (theResults != null) {
                results.addAll(Arrays.asList(theResults));
            }
        } catch (ReaderException re) {
            savedException = re;
        }
        if (results.isEmpty()) {
            try {
                // Look for pure barcode
                Result theResult = reader.decode(bitmap, HINTS_PURE);
                if (theResult != null) {
                    results.add(theResult);
                }
            } catch (ReaderException re) {
                savedException = re;
            }
        }
        if (results.isEmpty()) {
            try {
                // Look for normal barcode in photo
                Result theResult = reader.decode(bitmap, HINTS);
                if (theResult != null) {
                    results.add(theResult);
                }
            } catch (ReaderException re) {
                savedException = re;
            }
        }
        if (results.isEmpty()) {
            try {
                // Try again with other binarizer
                BinaryBitmap hybridBitmap = new BinaryBitmap(new HybridBinarizer(source));
                Result theResult = reader.decode(hybridBitmap, HINTS);
                if (theResult != null) {
                    results.add(theResult);
                }
            } catch (ReaderException re) {
                savedException = re;
            }
        }
        if (results.isEmpty()) {
            try {
                throw savedException == null ? NotFoundException.getNotFoundInstance() : savedException;
            } catch (FormatException | ChecksumException e) {
                log.info(e.toString());
                errorResponse(request, response, "format");
            } catch (ReaderException e) {
                // Including NotFoundException
                log.info(e.toString());
                errorResponse(request, response, "notfound");
            }
            return;
        }
    } catch (RuntimeException re) {
        // Call out unexpected errors in the log clearly
        log.log(Level.WARNING, "Unexpected exception from library", re);
        throw new ServletException(re);
    }
    String fullParameter = request.getParameter("full");
    boolean minimalOutput = fullParameter != null && !Boolean.parseBoolean(fullParameter);
    if (minimalOutput) {
        response.setContentType(MediaType.PLAIN_TEXT_UTF_8.toString());
        response.setCharacterEncoding(StandardCharsets.UTF_8.name());
        try (Writer out = new OutputStreamWriter(response.getOutputStream(), StandardCharsets.UTF_8)) {
            for (Result result : results) {
                out.write(result.getText());
                out.write('\n');
            }
        }
    } else {
        request.setAttribute("results", results);
        request.getRequestDispatcher("decoderesult.jspx").forward(request, response);
    }
}

Example 2 with FormatException

use of com.google.zxing.FormatException in project Signal-Android by WhisperSystems.

the class ScanningThread method getScannedData.

@Nullable
private String getScannedData(byte[] data, int width, int height, int orientation) {
    try {
        if (orientation == Configuration.ORIENTATION_PORTRAIT) {
            byte[] rotatedData = new byte[data.length];
            for (int y = 0; y < height; y++) {
                for (int x = 0; x < width; x++) {
                    rotatedData[x * height + height - y - 1] = data[x + y * width];
                }
            }
            int tmp = width;
            width = height;
            height = tmp;
            data = rotatedData;
        }
        PlanarYUVLuminanceSource source = new PlanarYUVLuminanceSource(data, width, height, 0, 0, width, height, false);
        BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
        Result result = reader.decode(bitmap, hints);
        if (result != null)
            return result.getText();
    } catch (NullPointerException | ChecksumException | FormatException e) {
        Log.w(TAG, e);
    } catch (NotFoundException e) {
    // Thanks ZXing...
    }
    return null;
}

Example 3 with FormatException

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

the class Decoder method decode.

/**
   * <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
   *
   * @param bits 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(BitMatrix bits, Map<DecodeHintType, ?> hints) throws FormatException, ChecksumException {
    // Construct a parser and read version, error-correction level
    BitMatrixParser parser = new BitMatrixParser(bits);
    FormatException fe = null;
    ChecksumException ce = null;
    try {
        return decode(parser, hints);
    } catch (FormatException e) {
        fe = e;
    } catch (ChecksumException e) {
        ce = e;
    }
    try {
        // Revert the bit matrix
        parser.remask();
        // Will be attempting a mirrored reading of the version and format info.
        parser.setMirror(true);
        // Preemptively read the version.
        parser.readVersion();
        // Preemptively read the format information.
        parser.readFormatInformation();
        /*
       * Since we're here, this means we have successfully detected some kind
       * of version and format information when mirrored. This is a good sign,
       * that the QR code may be mirrored, and we should try once more with a
       * mirrored content.
       */
        // Prepare for a mirrored reading.
        parser.mirror();
        DecoderResult result = decode(parser, hints);
        // Success! Notify the caller that the code was mirrored.
        result.setOther(new QRCodeDecoderMetaData(true));
        return result;
    } catch (FormatException | ChecksumException e) {
        // Throw the exception from the original reading
        if (fe != null) {
            throw fe;
        }
        if (ce != null) {
            throw ce;
        }
        throw e;
    }
}

Example 4 with FormatException

use of com.google.zxing.FormatException in project zxing by zxing.

the class Decoder method decode.

/**
   * <p>Decodes a QR Code represented as a {@link BitMatrix}. A 1 or "true" is taken to mean a black module.</p>
   *
   * @param bits 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(BitMatrix bits, Map<DecodeHintType, ?> hints) throws FormatException, ChecksumException {
    // Construct a parser and read version, error-correction level
    BitMatrixParser parser = new BitMatrixParser(bits);
    FormatException fe = null;
    ChecksumException ce = null;
    try {
        return decode(parser, hints);
    } catch (FormatException e) {
        fe = e;
    } catch (ChecksumException e) {
        ce = e;
    }
    try {
        // Revert the bit matrix
        parser.remask();
        // Will be attempting a mirrored reading of the version and format info.
        parser.setMirror(true);
        // Preemptively read the version.
        parser.readVersion();
        // Preemptively read the format information.
        parser.readFormatInformation();
        /*
       * Since we're here, this means we have successfully detected some kind
       * of version and format information when mirrored. This is a good sign,
       * that the QR code may be mirrored, and we should try once more with a
       * mirrored content.
       */
        // Prepare for a mirrored reading.
        parser.mirror();
        DecoderResult result = decode(parser, hints);
        // Success! Notify the caller that the code was mirrored.
        result.setOther(new QRCodeDecoderMetaData(true));
        return result;
    } catch (FormatException | ChecksumException e) {
        // Throw the exception from the original reading
        if (fe != null) {
            throw fe;
        }
        if (ce != null) {
            throw ce;
        }
        throw e;
    }
}

Example 5 with FormatException

use of com.google.zxing.FormatException in project QRCode by 5peak2me.

the class MipcaActivityCapture method scanningImage.

/**
	 * 扫描二维码图片的方法
	 * @param path
	 * @return
	 */
public Result scanningImage(String path) {
    if (TextUtils.isEmpty(path)) {
        return null;
    }
    Hashtable<DecodeHintType, String> hints = new Hashtable<DecodeHintType, String>();
    //设置二维码内容的编码
    hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
    BitmapFactory.Options options = new BitmapFactory.Options();
    // 先获取原大小
    options.inJustDecodeBounds = true;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    // 获取新的大小
    options.inJustDecodeBounds = false;
    int sampleSize = (int) (options.outHeight / (float) 200);
    if (sampleSize <= 0)
        sampleSize = 1;
    options.inSampleSize = sampleSize;
    scanBitmap = BitmapFactory.decodeFile(path, options);
    RGBLuminanceSource source = new RGBLuminanceSource(scanBitmap);
    BinaryBitmap bitmap1 = new BinaryBitmap(new HybridBinarizer(source));
    QRCodeReader reader = new QRCodeReader();
    try {
        return reader.decode(bitmap1, hints);
    } catch (NotFoundException e) {
        e.printStackTrace();
    } catch (ChecksumException e) {
        e.printStackTrace();
    } catch (FormatException e) {
        e.printStackTrace();
    }
    return null;
}