Example usage for io.netty.buffer ByteBuf readUnsignedShortLE

Introduction

In this page you can find the example usage for io.netty.buffer ByteBuf readUnsignedShortLE.

Prototype

public abstract int readUnsignedShortLE();

Source Link

Document

Gets an unsigned 16-bit short integer at the current readerIndex in the Little Endian Byte Order and increases the readerIndex by 2 in this buffer.

Usage

From source file:org.traccar.protocol.NyitechProtocolDecoder.java

License:Apache License

private void decodeLocation(Position position, ByteBuf buf) {

    DateBuilder dateBuilder = new DateBuilder()
            .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
            .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
    position.setTime(dateBuilder.getDate());

    int flags = buf.readUnsignedByte();
    position.setValid(BitUtil.to(flags, 2) > 0);

    double lat = buf.readUnsignedIntLE() / 3600000.0;
    double lon = buf.readUnsignedIntLE() / 3600000.0;

    position.setLatitude(BitUtil.check(flags, 2) ? lat : -lat);
    position.setLongitude(BitUtil.check(flags, 3) ? lon : -lon);

    position.setSpeed(UnitsConverter.knotsFromCps(buf.readUnsignedShortLE()));
    position.setCourse(buf.readUnsignedShortLE() * 0.1);
    position.setAltitude(buf.readShortLE() * 0.1);
}

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From source file:org.traccar.protocol.NyitechProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(2); // header
    buf.readUnsignedShortLE(); // length

    String id = buf.readCharSequence(12, StandardCharsets.US_ASCII).toString();
    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
    if (deviceSession == null) {
        return null;
    }/*from  w  w  w .  ja  va  2  s  . com*/

    int type = buf.readUnsignedShortLE();

    if (type != MSG_LOGIN && type != MSG_COMPREHENSIVE_LIVE && type != MSG_COMPREHENSIVE_HISTORY
            && type != MSG_ALARM && type != MSG_FIXED) {
        return null;
    }

    Position position = new Position(getProtocolName());
    position.setDeviceId(deviceSession.getDeviceId());

    if (type == MSG_COMPREHENSIVE_LIVE || type == MSG_COMPREHENSIVE_HISTORY) {

        buf.skipBytes(6); // time
        boolean includeLocation = buf.readUnsignedByte() > 0;
        boolean includeObd = buf.readUnsignedByte() > 0;
        buf.readUnsignedByte(); // include sensor

        if (includeLocation) {
            decodeLocation(position, buf);
        } else {
            getLastLocation(position, null);
        }

        if (includeObd) {
            int count = buf.readUnsignedByte();
            for (int i = 0; i < count; i++) {
                int pid = buf.readUnsignedShortLE();
                int length = buf.readUnsignedByte();
                switch (length) {
                case 1:
                    position.add(ObdDecoder.decodeData(pid, buf.readByte(), true));
                    break;
                case 2:
                    position.add(ObdDecoder.decodeData(pid, buf.readShortLE(), true));
                    break;
                case 4:
                    position.add(ObdDecoder.decodeData(pid, buf.readIntLE(), true));
                    break;
                default:
                    buf.skipBytes(length);
                    break;
                }
            }
        }

        position.set(Position.KEY_FUEL_USED, buf.readUnsignedInt() * 0.01);
        position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt());

    } else if (type == MSG_ALARM) {

        buf.readUnsignedShortLE(); // random number
        buf.readUnsignedByte(); // tag
        position.set(Position.KEY_ALARM, decodeAlarm(buf.readUnsignedByte()));
        buf.readUnsignedShortLE(); // threshold
        buf.readUnsignedShortLE(); // value
        buf.skipBytes(6); // time

        decodeLocation(position, buf);

    } else if (type == MSG_FIXED) {

        buf.skipBytes(6); // time

        decodeLocation(position, buf);

    } else {

        decodeLocation(position, buf);

    }

    return position;
}

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From source file:org.traccar.protocol.OrionProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(2); // header
    int type = buf.readUnsignedByte() & 0x0f;

    if (type == MSG_USERLOG) {

        int header = buf.readUnsignedByte();

        if ((header & 0x40) != 0) {
            sendResponse(channel, buf);//from  w  ww  .j  av a  2  s  .  c om
        }

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
                String.valueOf(buf.readUnsignedInt()));
        if (deviceSession == null) {
            return null;
        }

        List<Position> positions = new LinkedList<>();

        for (int i = 0; i < (header & 0x0f); i++) {

            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            position.set(Position.KEY_EVENT, buf.readUnsignedByte());
            buf.readUnsignedByte(); // length
            position.set(Position.KEY_FLAGS, buf.readUnsignedShortLE());

            position.setLatitude(convertCoordinate(buf.readIntLE()));
            position.setLongitude(convertCoordinate(buf.readIntLE()));
            position.setAltitude(buf.readShortLE() / 10.0);
            position.setCourse(buf.readUnsignedShortLE());
            position.setSpeed(buf.readUnsignedShortLE() * 0.0539957);

            DateBuilder dateBuilder = new DateBuilder()
                    .setDate(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                    .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte());
            position.setTime(dateBuilder.getDate());

            int satellites = buf.readUnsignedByte();
            position.setValid(satellites >= 3);
            position.set(Position.KEY_SATELLITES, satellites);

            positions.add(position);
        }

        return positions;
    }

    return null;
}

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From source file:org.traccar.protocol.ProgressProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;
    int type = buf.readUnsignedShortLE();
    buf.readUnsignedShortLE(); // length

    if (type == MSG_IDENT || type == MSG_IDENT_FULL) {

        buf.readUnsignedIntLE(); // id
        int length = buf.readUnsignedShortLE();
        buf.skipBytes(length);//from   w ww  . ja v a2 s. c om
        length = buf.readUnsignedShortLE();
        buf.skipBytes(length);
        length = buf.readUnsignedShortLE();
        String imei = buf.readSlice(length).toString(StandardCharsets.US_ASCII);
        getDeviceSession(channel, remoteAddress, imei);

    } else if (type == MSG_POINT || type == MSG_ALARM || type == MSG_LOGMSG) {

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }

        List<Position> positions = new LinkedList<>();

        int recordCount = 1;
        if (type == MSG_LOGMSG) {
            recordCount = buf.readUnsignedShortLE();
        }

        for (int j = 0; j < recordCount; j++) {
            Position position = new Position(getProtocolName());
            position.setDeviceId(deviceSession.getDeviceId());

            if (type == MSG_LOGMSG) {
                position.set(Position.KEY_ARCHIVE, true);
                int subtype = buf.readUnsignedShortLE();
                if (subtype == MSG_ALARM) {
                    position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
                }
                if (buf.readUnsignedShortLE() > buf.readableBytes()) {
                    lastIndex += 1;
                    break; // workaround for device bug
                }
                lastIndex = buf.readUnsignedIntLE();
                position.set(Position.KEY_INDEX, lastIndex);
            } else {
                newIndex = buf.readUnsignedIntLE();
            }

            position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
            position.setLatitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);
            position.setLongitude(buf.readIntLE() * 180.0 / 0x7FFFFFFF);
            position.setSpeed(buf.readUnsignedIntLE() * 0.01);
            position.setCourse(buf.readUnsignedShortLE() * 0.01);
            position.setAltitude(buf.readUnsignedShortLE() * 0.01);

            int satellites = buf.readUnsignedByte();
            position.setValid(satellites >= 3);
            position.set(Position.KEY_SATELLITES, satellites);

            position.set(Position.KEY_RSSI, buf.readUnsignedByte());
            position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());

            long extraFlags = buf.readLongLE();

            if (BitUtil.check(extraFlags, 0)) {
                int count = buf.readUnsignedShortLE();
                for (int i = 1; i <= count; i++) {
                    position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
                }
            }

            if (BitUtil.check(extraFlags, 1)) {
                int size = buf.readUnsignedShortLE();
                position.set("can", buf.toString(buf.readerIndex(), size, StandardCharsets.US_ASCII));
                buf.skipBytes(size);
            }

            if (BitUtil.check(extraFlags, 2)) {
                position.set("passenger", ByteBufUtil.hexDump(buf.readSlice(buf.readUnsignedShortLE())));
            }

            if (type == MSG_ALARM) {
                position.set(Position.KEY_ALARM, true);
                byte[] response = { (byte) 0xC9, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
                channel.writeAndFlush(new NetworkMessage(Unpooled.wrappedBuffer(response), remoteAddress));
            }

            buf.readUnsignedIntLE(); // crc

            positions.add(position);
        }

        requestArchive(channel);

        return positions;
    }

    return null;
}

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From source file:org.traccar.protocol.RecodaProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    int type = buf.readIntLE();
    buf.readUnsignedIntLE(); // length

    if (type != MSG_HEARTBEAT) {
        buf.readUnsignedShortLE(); // version
        buf.readUnsignedShortLE(); // index
    }/*from w ww .j a  va 2 s  .com*/

    if (type == MSG_SIGNAL_LINK_REGISTRATION) {

        getDeviceSession(channel, remoteAddress, buf.readSlice(12).toString(StandardCharsets.US_ASCII));

    } else if (type == MSG_GPS_DATA) {

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        position.setTime(new Date(buf.readLongLE()));

        int flags = buf.readUnsignedByte();

        if (BitUtil.check(flags, 0)) {

            buf.readUnsignedShortLE(); // declination

            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));

            position.setLongitude(buf.readUnsignedByte() + buf.readUnsignedByte() / 60.0);
            position.setLatitude(buf.readUnsignedByte() + buf.readUnsignedByte() / 60.0);

            position.setLongitude(position.getLongitude() + buf.readUnsignedIntLE() / 3600.0);
            position.setLatitude(position.getLatitude() + buf.readUnsignedIntLE() / 3600.0);

            int status = buf.readUnsignedByte();

            position.setValid(BitUtil.check(status, 0));
            if (BitUtil.check(status, 1)) {
                position.setLongitude(-position.getLongitude());
            }
            if (!BitUtil.check(status, 2)) {
                position.setLatitude(-position.getLatitude());
            }

        } else {

            getLastLocation(position, position.getDeviceTime());

        }

        return position;

    }

    return null;
}

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From source file:org.traccar.protocol.RitiProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.skipBytes(2); // header

    Position position = new Position(getProtocolName());

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress,
            String.valueOf(buf.readUnsignedShort()));
    if (deviceSession == null) {
        return null;
    }/*from  w  w w.  j  av  a 2 s  . co m*/
    position.setDeviceId(deviceSession.getDeviceId());

    position.set("mode", buf.readUnsignedByte());
    position.set(Position.KEY_COMMAND, buf.readUnsignedByte());
    position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);

    buf.skipBytes(5); // status
    buf.readUnsignedShortLE(); // idleCount
    buf.readUnsignedShortLE(); // idleTime in seconds

    position.set(Position.KEY_DISTANCE, buf.readUnsignedIntLE());
    position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedIntLE());

    // Parse GPRMC
    int end = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '*');
    String gprmc = buf.toString(buf.readerIndex(), end - buf.readerIndex(), StandardCharsets.US_ASCII);
    Parser parser = new Parser(PATTERN, gprmc);
    if (!parser.matches()) {
        return null;
    }

    DateBuilder dateBuilder = new DateBuilder().setTime(parser.nextInt(0), parser.nextInt(0),
            parser.nextInt(0));

    position.setValid(parser.next().equals("A"));
    position.setLatitude(parser.nextCoordinate());
    position.setLongitude(parser.nextCoordinate());
    position.setSpeed(parser.nextDouble(0));
    position.setCourse(parser.nextDouble(0));

    dateBuilder.setDateReverse(parser.nextInt(0), parser.nextInt(0), parser.nextInt(0));
    position.setTime(dateBuilder.getDate());

    return position;
}

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From source file:org.traccar.protocol.RoboTrackProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    int type = buf.readUnsignedByte();

    if (type == MSG_ID) {

        buf.skipBytes(16); // name

        String imei = buf.readSlice(15).toString(StandardCharsets.US_ASCII);

        if (getDeviceSession(channel, remoteAddress, imei) != null && channel != null) {
            ByteBuf response = Unpooled.buffer();
            response.writeByte(MSG_ACK);
            response.writeByte(0x01); // success
            response.writeByte(0x66); // checksum
            channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
        }// w  ww .  ja  v  a  2s . c om

    } else if (type == MSG_GPS || type == MSG_GSM) {

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        position.setDeviceTime(new Date(buf.readUnsignedIntLE() * 1000));

        if (type == MSG_GPS) {

            position.setValid(true);
            position.setFixTime(position.getDeviceTime());
            position.setLatitude(buf.readIntLE() * 0.000001);
            position.setLongitude(buf.readIntLE() * 0.000001);
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readByte()));

        } else {

            getLastLocation(position, position.getDeviceTime());

            position.setNetwork(new Network(CellTower.from(buf.readUnsignedShortLE(), buf.readUnsignedShortLE(),
                    buf.readUnsignedShortLE(), buf.readUnsignedShortLE())));

            buf.readUnsignedByte(); // reserved

        }

        int value = buf.readUnsignedByte();

        position.set(Position.KEY_SATELLITES, BitUtil.to(value, 4));
        position.set(Position.KEY_RSSI, BitUtil.between(value, 4, 7));
        position.set(Position.KEY_MOTION, BitUtil.check(value, 7));

        value = buf.readUnsignedByte();

        position.set(Position.KEY_CHARGE, BitUtil.check(value, 0));

        for (int i = 1; i <= 4; i++) {
            position.set(Position.PREFIX_IN + i, BitUtil.check(value, i));
        }

        position.set(Position.KEY_BATTERY_LEVEL, BitUtil.from(value, 5) * 100 / 7);
        position.set(Position.KEY_DEVICE_TEMP, buf.readByte());

        for (int i = 1; i <= 3; i++) {
            position.set(Position.PREFIX_ADC + i, buf.readUnsignedShortLE());
        }

        return position;

    }

    return null;
}

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From source file:org.traccar.protocol.SanulProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedByte(); // header
    buf.readUnsignedShortLE(); // reserved
    buf.readUnsignedShortLE(); // length
    buf.readUnsignedByte(); // edition

    int type = buf.readUnsignedShortLE();

    buf.readUnsignedIntLE(); // command id

    sendResponse(channel, type);/*from  w w  w  . j a v a  2  s.  c o  m*/

    if (type == MSG_LOGIN) {

        getDeviceSession(channel, remoteAddress, buf.toString(StandardCharsets.US_ASCII).trim());

    } else if (type == MSG_LOCATION) {

        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
        if (deviceSession == null) {
            return null;
        }

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        getLastLocation(position, null);

        return position;

    }

    return null;
}

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From source file:org.traccar.protocol.SatsolProtocolDecoder.java

License:Apache License

@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {

    ByteBuf buf = (ByteBuf) msg;

    buf.readUnsignedShortLE(); // checksum
    buf.readUnsignedShortLE(); // preamble
    long id = buf.readUnsignedIntLE();
    buf.readUnsignedShortLE(); // length

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(id));
    if (deviceSession == null) {
        return null;
    }// w  w  w.j  a v  a2  s  . c o m

    List<Position> positions = new LinkedList<>();

    while (buf.isReadable()) {

        buf.readUnsignedShortLE(); // checksum
        buf.readUnsignedShortLE(); // checksum
        buf.readUnsignedShortLE(); // type
        int length = buf.readUnsignedShortLE();

        Position position = new Position(getProtocolName());
        position.setDeviceId(deviceSession.getDeviceId());

        position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
        position.setLatitude(buf.readUnsignedIntLE() * 0.000001);
        position.setLongitude(buf.readUnsignedIntLE() * 0.000001);
        position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE() * 0.01));
        position.setAltitude(buf.readShortLE());
        position.setCourse(buf.readUnsignedShortLE());
        position.setValid(buf.readUnsignedByte() > 0);

        position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
        position.set(Position.KEY_EVENT, buf.readUnsignedByte());

        if (BitUtil.check(buf.readUnsignedByte(), 0)) {
            position.set(Position.KEY_ARCHIVE, true);
        }

        positions.add(position);

        buf.skipBytes(length);

    }

    if (channel != null) {
        ByteBuf response = Unpooled.buffer();
        response.writeShortLE(0);
        response.writeShortLE(0x4CBF); // preamble
        response.writeIntLE((int) id);
        response.writeShortLE(0);
        response.setShortLE(0, Checksum.crc16(Checksum.CRC16_CCITT_FALSE,
                response.nioBuffer(2, response.readableBytes() - 2)));
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }

    return positions;
}

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From source file:org.traccar.protocol.T800xProtocolDecoder.java

License:Apache License

private Position decodePosition(Channel channel, DeviceSession deviceSession, ByteBuf buf, short header,
        int type, int index, ByteBuf imei) {

    Position position = new Position(getProtocolName());
    position.setDeviceId(deviceSession.getDeviceId());

    position.set(Position.KEY_INDEX, index);

    buf.readUnsignedShort(); // acc on interval
    buf.readUnsignedShort(); // acc off interval
    buf.readUnsignedByte(); // angle compensation
    buf.readUnsignedShort(); // distance compensation

    position.set(Position.KEY_RSSI, BitUtil.to(buf.readUnsignedShort(), 7));

    int status = buf.readUnsignedByte();
    position.set(Position.KEY_SATELLITES, BitUtil.to(status, 5));

    buf.readUnsignedByte(); // gsensor manager status
    buf.readUnsignedByte(); // other flags
    buf.readUnsignedByte(); // heartbeat
    buf.readUnsignedByte(); // relay status
    buf.readUnsignedShort(); // drag alarm setting

    int io = buf.readUnsignedShort();
    position.set(Position.KEY_IGNITION, BitUtil.check(io, 14));
    position.set("ac", BitUtil.check(io, 13));
    for (int i = 0; i <= 2; i++) {
        position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(io, 7 + i));
    }//  w  w w  . j  a v a2 s. c  o m

    position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort());
    position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort());

    int alarm = buf.readUnsignedByte();
    position.set(Position.KEY_ALARM, decodeAlarm(alarm));

    buf.readUnsignedByte(); // reserved

    position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());

    int battery = BcdUtil.readInteger(buf, 2);
    if (battery == 0) {
        battery = 100;
    }
    position.set(Position.KEY_BATTERY, battery);

    DateBuilder dateBuilder = new DateBuilder().setYear(BcdUtil.readInteger(buf, 2))
            .setMonth(BcdUtil.readInteger(buf, 2)).setDay(BcdUtil.readInteger(buf, 2))
            .setHour(BcdUtil.readInteger(buf, 2)).setMinute(BcdUtil.readInteger(buf, 2))
            .setSecond(BcdUtil.readInteger(buf, 2));

    if (BitUtil.check(status, 6)) {

        position.setValid(!BitUtil.check(status, 7));
        position.setTime(dateBuilder.getDate());
        position.setAltitude(buf.readFloatLE());
        position.setLongitude(buf.readFloatLE());
        position.setLatitude(buf.readFloatLE());
        position.setSpeed(UnitsConverter.knotsFromKph(BcdUtil.readInteger(buf, 4) * 0.1));
        position.setCourse(buf.readUnsignedShort());

    } else {

        getLastLocation(position, dateBuilder.getDate());

        int mcc = buf.readUnsignedShortLE();
        int mnc = buf.readUnsignedShortLE();

        if (mcc != 0xffff && mnc != 0xffff) {
            Network network = new Network();
            for (int i = 0; i < 3; i++) {
                network.addCellTower(
                        CellTower.from(mcc, mnc, buf.readUnsignedShortLE(), buf.readUnsignedShortLE()));
            }
            position.setNetwork(network);
        }

    }

    if (buf.readableBytes() >= 2) {
        position.set(Position.KEY_POWER, BcdUtil.readInteger(buf, 4) * 0.01);
    }

    sendResponse(channel, header, type, index, imei, alarm);

    return position;
}

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