Examples with GenericMultipleBarcodeReader com.google.zxing.multi.GenericMultipleBarcodeReader used on opensource projects

Example 1 with GenericMultipleBarcodeReader

use of com.google.zxing.multi.GenericMultipleBarcodeReader 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 GenericMultipleBarcodeReader

use of com.google.zxing.multi.GenericMultipleBarcodeReader in project zxing by zxing.

the class DecodeWorker method decode.

private Result[] decode(URI uri, Map<DecodeHintType, ?> hints) throws IOException {
    BufferedImage image = ImageReader.readImage(uri);
    LuminanceSource source;
    if (config.crop == null) {
        source = new BufferedImageLuminanceSource(image);
    } else {
        List<Integer> crop = config.crop;
        source = new BufferedImageLuminanceSource(image, crop.get(0), crop.get(1), crop.get(2), crop.get(3));
    }
    BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));
    if (config.dumpBlackPoint) {
        dumpBlackPoint(uri, image, bitmap);
    }
    MultiFormatReader multiFormatReader = new MultiFormatReader();
    Result[] results;
    try {
        if (config.multi) {
            MultipleBarcodeReader reader = new GenericMultipleBarcodeReader(multiFormatReader);
            results = reader.decodeMultiple(bitmap, hints);
        } else {
            results = new Result[] { multiFormatReader.decode(bitmap, hints) };
        }
    } catch (NotFoundException ignored) {
        System.out.println(uri + ": No barcode found");
        return null;
    }
    if (config.brief) {
        System.out.println(uri + ": Success");
    } else {
        StringWriter output = new StringWriter();
        for (Result result : results) {
            ParsedResult parsedResult = ResultParser.parseResult(result);
            output.write(uri + " (format: " + result.getBarcodeFormat() + ", type: " + parsedResult.getType() + "):\n" + "Raw result:\n" + result.getText() + "\n" + "Parsed result:\n" + parsedResult.getDisplayResult() + "\n");
            output.write("Found " + result.getResultPoints().length + " result points.\n");
            for (int pointIndex = 0; pointIndex < result.getResultPoints().length; pointIndex++) {
                ResultPoint rp = result.getResultPoints()[pointIndex];
                output.write("  Point " + pointIndex + ": (" + rp.getX() + ',' + rp.getY() + ')');
                if (pointIndex != result.getResultPoints().length - 1) {
                    output.write('\n');
                }
            }
            output.write('\n');
        }
        System.out.println(output);
    }
    return results;
}