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

Example 11 with DecoderResult

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

the class DecodedBitStreamParser method decode.

static DecoderResult decode(byte[] bytes) throws FormatException {
    BitSource bits = new BitSource(bytes);
    StringBuilder result = new StringBuilder(100);
    StringBuilder resultTrailer = new StringBuilder(0);
    List<byte[]> byteSegments = new ArrayList<>(1);
    Mode mode = Mode.ASCII_ENCODE;
    do {
        if (mode == Mode.ASCII_ENCODE) {
            mode = decodeAsciiSegment(bits, result, resultTrailer);
        } else {
            switch(mode) {
                case C40_ENCODE:
                    decodeC40Segment(bits, result);
                    break;
                case TEXT_ENCODE:
                    decodeTextSegment(bits, result);
                    break;
                case ANSIX12_ENCODE:
                    decodeAnsiX12Segment(bits, result);
                    break;
                case EDIFACT_ENCODE:
                    decodeEdifactSegment(bits, result);
                    break;
                case BASE256_ENCODE:
                    decodeBase256Segment(bits, result, byteSegments);
                    break;
                default:
                    throw FormatException.getFormatInstance();
            }
            mode = Mode.ASCII_ENCODE;
        }
    } while (mode != Mode.PAD_ENCODE && bits.available() > 0);
    if (resultTrailer.length() > 0) {
        result.append(resultTrailer);
    }
    return new DecoderResult(bytes, result.toString(), byteSegments.isEmpty() ? null : byteSegments, null);
}

Example 12 with DecoderResult

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

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 13 with DecoderResult

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

the class DecodedBitStreamParser method decode.

static DecoderResult decode(int[] codewords, String ecLevel) throws FormatException {
    StringBuilder result = new StringBuilder(codewords.length * 2);
    Charset encoding = DEFAULT_ENCODING;
    // Get compaction mode
    int codeIndex = 1;
    int code = codewords[codeIndex++];
    PDF417ResultMetadata resultMetadata = new PDF417ResultMetadata();
    while (codeIndex < codewords[0]) {
        switch(code) {
            case TEXT_COMPACTION_MODE_LATCH:
                codeIndex = textCompaction(codewords, codeIndex, result);
                break;
            case BYTE_COMPACTION_MODE_LATCH:
            case BYTE_COMPACTION_MODE_LATCH_6:
                codeIndex = byteCompaction(code, codewords, encoding, codeIndex, result);
                break;
            case MODE_SHIFT_TO_BYTE_COMPACTION_MODE:
                result.append((char) codewords[codeIndex++]);
                break;
            case NUMERIC_COMPACTION_MODE_LATCH:
                codeIndex = numericCompaction(codewords, codeIndex, result);
                break;
            case ECI_CHARSET:
                CharacterSetECI charsetECI = CharacterSetECI.getCharacterSetECIByValue(codewords[codeIndex++]);
                encoding = Charset.forName(charsetECI.name());
                break;
            case ECI_GENERAL_PURPOSE:
                // Can't do anything with generic ECI; skip its 2 characters
                codeIndex += 2;
                break;
            case ECI_USER_DEFINED:
                // Can't do anything with user ECI; skip its 1 character
                codeIndex++;
                break;
            case BEGIN_MACRO_PDF417_CONTROL_BLOCK:
                codeIndex = decodeMacroBlock(codewords, codeIndex, resultMetadata);
                break;
            case BEGIN_MACRO_PDF417_OPTIONAL_FIELD:
            case MACRO_PDF417_TERMINATOR:
                // Should not see these outside a macro block
                throw FormatException.getFormatInstance();
            default:
                // Default to text compaction. During testing numerous barcodes
                // appeared to be missing the starting mode. In these cases defaulting
                // to text compaction seems to work.
                codeIndex--;
                codeIndex = textCompaction(codewords, codeIndex, result);
                break;
        }
        if (codeIndex < codewords.length) {
            code = codewords[codeIndex++];
        } else {
            throw FormatException.getFormatInstance();
        }
    }
    if (result.length() == 0) {
        throw FormatException.getFormatInstance();
    }
    DecoderResult decoderResult = new DecoderResult(null, result.toString(), null, ecLevel);
    decoderResult.setOther(resultMetadata);
    return decoderResult;
}

Example 14 with DecoderResult

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

the class DecodedBitStreamParser method decode.

static DecoderResult decode(byte[] bytes, Version version, ErrorCorrectionLevel ecLevel, Map<DecodeHintType, ?> hints) throws FormatException {
    BitSource bits = new BitSource(bytes);
    StringBuilder result = new StringBuilder(50);
    List<byte[]> byteSegments = new ArrayList<>(1);
    int symbolSequence = -1;
    int parityData = -1;
    try {
        CharacterSetECI currentCharacterSetECI = null;
        boolean fc1InEffect = false;
        Mode mode;
        do {
            // While still another segment to read...
            if (bits.available() < 4) {
                // OK, assume we're done. Really, a TERMINATOR mode should have been recorded here
                mode = Mode.TERMINATOR;
            } else {
                // mode is encoded by 4 bits
                mode = Mode.forBits(bits.readBits(4));
            }
            if (mode != Mode.TERMINATOR) {
                if (mode == Mode.FNC1_FIRST_POSITION || mode == Mode.FNC1_SECOND_POSITION) {
                    // We do little with FNC1 except alter the parsed result a bit according to the spec
                    fc1InEffect = true;
                } else if (mode == Mode.STRUCTURED_APPEND) {
                    if (bits.available() < 16) {
                        throw FormatException.getFormatInstance();
                    }
                    // sequence number and parity is added later to the result metadata
                    // Read next 8 bits (symbol sequence #) and 8 bits (parity data), then continue
                    symbolSequence = bits.readBits(8);
                    parityData = bits.readBits(8);
                } else if (mode == Mode.ECI) {
                    // Count doesn't apply to ECI
                    int value = parseECIValue(bits);
                    currentCharacterSetECI = CharacterSetECI.getCharacterSetECIByValue(value);
                    if (currentCharacterSetECI == null) {
                        throw FormatException.getFormatInstance();
                    }
                } else {
                    // First handle Hanzi mode which does not start with character count
                    if (mode == Mode.HANZI) {
                        //chinese mode contains a sub set indicator right after mode indicator
                        int subset = bits.readBits(4);
                        int countHanzi = bits.readBits(mode.getCharacterCountBits(version));
                        if (subset == GB2312_SUBSET) {
                            decodeHanziSegment(bits, result, countHanzi);
                        }
                    } else {
                        // "Normal" QR code modes:
                        // How many characters will follow, encoded in this mode?
                        int count = bits.readBits(mode.getCharacterCountBits(version));
                        if (mode == Mode.NUMERIC) {
                            decodeNumericSegment(bits, result, count);
                        } else if (mode == Mode.ALPHANUMERIC) {
                            decodeAlphanumericSegment(bits, result, count, fc1InEffect);
                        } else if (mode == Mode.BYTE) {
                            decodeByteSegment(bits, result, count, currentCharacterSetECI, byteSegments, hints);
                        } else if (mode == Mode.KANJI) {
                            decodeKanjiSegment(bits, result, count);
                        } else {
                            throw FormatException.getFormatInstance();
                        }
                    }
                }
            }
        } while (mode != Mode.TERMINATOR);
    } catch (IllegalArgumentException iae) {
        // from readBits() calls
        throw FormatException.getFormatInstance();
    }
    return new DecoderResult(bytes, result.toString(), byteSegments.isEmpty() ? null : byteSegments, ecLevel == null ? null : ecLevel.toString(), symbolSequence, parityData);
}

Example 15 with DecoderResult

use of com.google.zxing.common.DecoderResult in project incubator-weex by apache.

the class DataMatrixReader method decode.

@Override
public 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);
        points = NO_POINTS;
    } else {
        DetectorResult detectorResult = new Detector(image.getBlackMatrix()).detect();
        decoderResult = decoder.decode(detectorResult.getBits());
        points = detectorResult.getPoints();
    }
    Result result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), points, BarcodeFormat.DATA_MATRIX);
    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);
    }
    return result;
}