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

Example 26 with DecoderResult

use of com.google.zxing.common.DecoderResult in project zxing by zxing.

the class PDF417Reader method decode.

private static Result[] decode(BinaryBitmap image, Map<DecodeHintType, ?> hints, boolean multiple) throws NotFoundException, FormatException, ChecksumException {
    List<Result> results = new ArrayList<>();
    PDF417DetectorResult detectorResult = Detector.detect(image, hints, multiple);
    for (ResultPoint[] points : detectorResult.getPoints()) {
        DecoderResult decoderResult = PDF417ScanningDecoder.decode(detectorResult.getBits(), points[4], points[5], points[6], points[7], getMinCodewordWidth(points), getMaxCodewordWidth(points));
        Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.PDF_417);
        result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, decoderResult.getECLevel());
        PDF417ResultMetadata pdf417ResultMetadata = (PDF417ResultMetadata) decoderResult.getOther();
        if (pdf417ResultMetadata != null) {
            result.putMetadata(ResultMetadataType.PDF417_EXTRA_METADATA, pdf417ResultMetadata);
        }
        results.add(result);
    }
    return results.toArray(new Result[results.size()]);
}

Example 27 with DecoderResult

use of com.google.zxing.common.DecoderResult in project zxing by zxing.

the class PDF417ScanningDecoder method decodeCodewords.

private static DecoderResult decodeCodewords(int[] codewords, int ecLevel, int[] erasures) throws FormatException, ChecksumException {
    if (codewords.length == 0) {
        throw FormatException.getFormatInstance();
    }
    int numECCodewords = 1 << (ecLevel + 1);
    int correctedErrorsCount = correctErrors(codewords, erasures, numECCodewords);
    verifyCodewordCount(codewords, numECCodewords);
    // Decode the codewords
    DecoderResult decoderResult = DecodedBitStreamParser.decode(codewords, String.valueOf(ecLevel));
    decoderResult.setErrorsCorrected(correctedErrorsCount);
    decoderResult.setErasures(erasures.length);
    return decoderResult;
}

Example 28 with DecoderResult

use of com.google.zxing.common.DecoderResult in project zxing by zxing.

the class QRCodeReader method decode.

@Override
public final Result decode(BinaryBitmap image, Map<DecodeHintType, ?> hints) throws NotFoundException, ChecksumException, FormatException {
    DecoderResult decoderResult;
    ResultPoint[] points;
    if (hints != null && hints.containsKey(DecodeHintType.PURE_BARCODE)) {
        BitMatrix bits = extractPureBits(image.getBlackMatrix());
        decoderResult = decoder.decode(bits, hints);
        points = NO_POINTS;
    } else {
        DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect(hints);
        decoderResult = decoder.decode(detectorResult.getBits(), hints);
        points = detectorResult.getPoints();
    }
    // If the code was mirrored: swap the bottom-left and the top-right points.
    if (decoderResult.getOther() instanceof QRCodeDecoderMetaData) {
        ((QRCodeDecoderMetaData) decoderResult.getOther()).applyMirroredCorrection(points);
    }
    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.QR_CODE);
    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);
    }
    if (decoderResult.hasStructuredAppend()) {
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_SEQUENCE, decoderResult.getStructuredAppendSequenceNumber());
        result.putMetadata(ResultMetadataType.STRUCTURED_APPEND_PARITY, decoderResult.getStructuredAppendParity());
    }
    return result;
}

Example 29 with DecoderResult

use of com.google.zxing.common.DecoderResult 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 30 with DecoderResult

use of com.google.zxing.common.DecoderResult in project zxing by zxing.

the class DecoderTest method testAztecResult.

@Test
public void testAztecResult() throws FormatException {
    BitMatrix matrix = BitMatrix.parse("X X X X X     X X X       X X X     X X X     \n" + "X X X     X X X     X X X X     X X X     X X \n" + "  X   X X       X   X   X X X X     X     X X \n" + "  X   X X     X X     X     X   X       X   X \n" + "  X X   X X         X               X X     X \n" + "  X X   X X X X X X X X X X X X X X X     X   \n" + "  X X X X X                       X   X X X   \n" + "  X   X   X   X X X X X X X X X   X X X   X X \n" + "  X   X X X   X               X   X X       X \n" + "  X X   X X   X   X X X X X   X   X X X X   X \n" + "  X X   X X   X   X       X   X   X   X X X   \n" + "  X   X   X   X   X   X   X   X   X   X   X   \n" + "  X X X   X   X   X       X   X   X X   X X   \n" + "  X X X X X   X   X X X X X   X   X X X   X X \n" + "X X   X X X   X               X   X   X X   X \n" + "  X       X   X X X X X X X X X   X   X     X \n" + "  X X   X X                       X X   X X   \n" + "  X X X   X X X X X X X X X X X X X X   X X   \n" + "X     X     X     X X   X X               X X \n" + "X   X X X X X   X X X X X     X   X   X     X \n" + "X X X   X X X X           X X X       X     X \n" + "X X     X X X     X X X X     X X X     X X   \n" + "    X X X     X X X       X X X     X X X X   \n", "X ", "  ");
    AztecDetectorResult r = new AztecDetectorResult(matrix, NO_POINTS, false, 30, 2);
    DecoderResult result = new Decoder().decode(r);
    assertEquals("88888TTTTTTTTTTTTTTTTTTTTTTTTTTTTTT", result.getText());
    assertArrayEquals(new byte[] { -11, 85, 85, 117, 107, 90, -42, -75, -83, 107, 90, -42, -75, -83, 107, 90, -42, -75, -83, 107, 90, -42, -80 }, result.getRawBytes());
    assertEquals(180, result.getNumBits());
}