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

Example 16 with Result

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

the class UPCEANExtension2Support method decodeRow.

Result decodeRow(int rowNumber, BitArray row, int[] extensionStartRange) throws NotFoundException {
    StringBuilder result = decodeRowStringBuffer;
    result.setLength(0);
    int end = decodeMiddle(row, extensionStartRange, result);
    String resultString = result.toString();
    Map<ResultMetadataType, Object> extensionData = parseExtensionString(resultString);
    Result extensionResult = new Result(resultString, null, new ResultPoint[] { new ResultPoint((extensionStartRange[0] + extensionStartRange[1]) / 2.0f, (float) rowNumber), new ResultPoint((float) end, (float) rowNumber) }, BarcodeFormat.UPC_EAN_EXTENSION);
    if (extensionData != null) {
        extensionResult.putAllMetadata(extensionData);
    }
    return extensionResult;
}

Example 17 with Result

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

the class Code39Reader method decodeRow.

@Override
public Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType, ?> hints) throws NotFoundException, ChecksumException, FormatException {
    int[] theCounters = counters;
    Arrays.fill(theCounters, 0);
    StringBuilder result = decodeRowResult;
    result.setLength(0);
    int[] start = findAsteriskPattern(row, theCounters);
    // Read off white space    
    int nextStart = row.getNextSet(start[1]);
    int end = row.getSize();
    char decodedChar;
    int lastStart;
    do {
        recordPattern(row, nextStart, theCounters);
        int pattern = toNarrowWidePattern(theCounters);
        if (pattern < 0) {
            throw NotFoundException.getNotFoundInstance();
        }
        decodedChar = patternToChar(pattern);
        result.append(decodedChar);
        lastStart = nextStart;
        for (int counter : theCounters) {
            nextStart += counter;
        }
        // Read off white space
        nextStart = row.getNextSet(nextStart);
    } while (decodedChar != '*');
    // remove asterisk
    result.setLength(result.length() - 1);
    // Look for whitespace after pattern:
    int lastPatternSize = 0;
    for (int counter : theCounters) {
        lastPatternSize += counter;
    }
    int whiteSpaceAfterEnd = nextStart - lastStart - lastPatternSize;
    // (but if it's whitespace to the very end of the image, that's OK)
    if (nextStart != end && (whiteSpaceAfterEnd * 2) < lastPatternSize) {
        throw NotFoundException.getNotFoundInstance();
    }
    if (usingCheckDigit) {
        int max = result.length() - 1;
        int total = 0;
        for (int i = 0; i < max; i++) {
            total += CHECK_DIGIT_STRING.indexOf(decodeRowResult.charAt(i));
        }
        if (result.charAt(max) != CHECK_DIGIT_STRING.charAt(total % 43)) {
            throw ChecksumException.getChecksumInstance();
        }
        result.setLength(max);
    }
    if (result.length() == 0) {
        // false positive
        throw NotFoundException.getNotFoundInstance();
    }
    String resultString;
    if (extendedMode) {
        resultString = decodeExtended(result);
    } else {
        resultString = result.toString();
    }
    float left = (float) (start[1] + start[0]) / 2.0f;
    float right = lastStart + lastPatternSize / 2.0f;
    return new Result(resultString, null, new ResultPoint[] { new ResultPoint(left, (float) rowNumber), new ResultPoint(right, (float) rowNumber) }, BarcodeFormat.CODE_39);
}

Example 18 with Result

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

the class ITFReader method decodeRow.

@Override
public Result decodeRow(int rowNumber, BitArray row, Map<DecodeHintType, ?> hints) throws FormatException, NotFoundException {
    // Find out where the Middle section (payload) starts & ends
    int[] startRange = decodeStart(row);
    int[] endRange = decodeEnd(row);
    StringBuilder result = new StringBuilder(20);
    decodeMiddle(row, startRange[1], endRange[0], result);
    String resultString = result.toString();
    int[] allowedLengths = null;
    if (hints != null) {
        allowedLengths = (int[]) hints.get(DecodeHintType.ALLOWED_LENGTHS);
    }
    if (allowedLengths == null) {
        allowedLengths = DEFAULT_ALLOWED_LENGTHS;
    }
    // To avoid false positives with 2D barcodes (and other patterns), make
    // an assumption that the decoded string must be a 'standard' length if it's short
    int length = resultString.length();
    boolean lengthOK = false;
    int maxAllowedLength = 0;
    for (int allowedLength : allowedLengths) {
        if (length == allowedLength) {
            lengthOK = true;
            break;
        }
        if (allowedLength > maxAllowedLength) {
            maxAllowedLength = allowedLength;
        }
    }
    if (!lengthOK && length > maxAllowedLength) {
        lengthOK = true;
    }
    if (!lengthOK) {
        throw FormatException.getFormatInstance();
    }
    return new Result(resultString, // no natural byte representation for these barcodes
    null, new ResultPoint[] { new ResultPoint(startRange[1], (float) rowNumber), new ResultPoint(endRange[0], (float) rowNumber) }, BarcodeFormat.ITF);
}

Example 19 with Result

use of com.google.zxing.Result 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 20 with Result

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

the class RSSExpandedStackedInternalTestCase method testDecodingRowByRow.

@Test
public void testDecodingRowByRow() throws Exception {
    RSSExpandedReader rssExpandedReader = new RSSExpandedReader();
    BinaryBitmap binaryMap = TestCaseUtil.getBinaryBitmap("src/test/resources/blackbox/rssexpandedstacked-2/1000.png");
    int firstRowNumber = binaryMap.getHeight() / 3;
    BitArray firstRow = binaryMap.getBlackRow(firstRowNumber, null);
    try {
        rssExpandedReader.decodeRow2pairs(firstRowNumber, firstRow);
        fail(NotFoundException.class.getName() + " expected");
    } catch (NotFoundException nfe) {
    // ok
    }
    assertEquals(1, rssExpandedReader.getRows().size());
    ExpandedRow firstExpandedRow = rssExpandedReader.getRows().get(0);
    assertEquals(firstRowNumber, firstExpandedRow.getRowNumber());
    assertEquals(2, firstExpandedRow.getPairs().size());
    firstExpandedRow.getPairs().get(1).getFinderPattern().getStartEnd()[1] = 0;
    int secondRowNumber = 2 * binaryMap.getHeight() / 3;
    BitArray secondRow = binaryMap.getBlackRow(secondRowNumber, null);
    secondRow.reverse();
    List<ExpandedPair> totalPairs = rssExpandedReader.decodeRow2pairs(secondRowNumber, secondRow);
    Result result = RSSExpandedReader.constructResult(totalPairs);
    assertEquals("(01)98898765432106(3202)012345(15)991231", result.getText());
}