Example usage for io.netty.buffer ByteBuf readShortLE

List of usage examples for io.netty.buffer ByteBuf readShortLE

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Introduction

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

Prototype

public abstract short readShortLE();

Source Link

Document

Gets a 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.Gps056ProtocolDecoder.java

License:Apache License

private static void decodeStatus(ByteBuf buf, Position position) {

    position.set(Position.KEY_INPUT, buf.readUnsignedByte());
    position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());

    position.set(Position.PREFIX_ADC + 1, buf.readShortLE() * 5.06); // mV

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

}

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

License:Apache License

private void decodeStructure(ByteBuf buf, Position position) {
    short flags = buf.readUnsignedByte();
    position.setValid(BitUtil.check(flags, 7));
    if (BitUtil.check(flags, 1)) {
        position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
    }//ww w  . jav a2  s. c  om

    short satDel = buf.readUnsignedByte();
    position.set(Position.KEY_SATELLITES, BitUtil.from(satDel, 4));

    int pdop = BitUtil.to(satDel, 4);
    position.set(Position.KEY_PDOP, pdop);

    int lonDegrees = buf.readUnsignedByte();
    int latDegrees = buf.readUnsignedByte();
    int lonMinutes = buf.readUnsignedShortLE();
    int latMinutes = buf.readUnsignedShortLE();

    double latitude = latDegrees + latMinutes / 60000.0;
    double longitude = lonDegrees + lonMinutes / 60000.0;

    if (position.getValid()) {
        if (!BitUtil.check(flags, 4)) {
            latitude = -latitude;
        }
        if (!BitUtil.check(flags, 5)) {
            longitude = -longitude;
        }
    }

    position.setLongitude(longitude);
    position.setLatitude(latitude);

    position.setSpeed(buf.readUnsignedByte());

    int course = buf.readUnsignedByte();
    if (BitUtil.check(flags, 6)) {
        course = course | 0x100;
    }
    position.setCourse(course);

    position.set(Position.KEY_DISTANCE, buf.readShortLE());

    int analogIn1 = buf.readUnsignedByte();
    int analogIn2 = buf.readUnsignedByte();
    int analogIn3 = buf.readUnsignedByte();
    int analogIn4 = buf.readUnsignedByte();

    int analogInHi = buf.readUnsignedByte();

    analogIn1 = analogInHi << 8 & 0x300 | analogIn1;
    analogIn2 = analogInHi << 6 & 0x300 | analogIn2;
    analogIn3 = analogInHi << 4 & 0x300 | analogIn3;
    analogIn4 = analogInHi << 2 & 0x300 | analogIn4;

    position.set(Position.PREFIX_ADC + 1, analogIn1 * adc1Ratio);
    position.set(Position.PREFIX_ADC + 2, analogIn2 * adc2Ratio);
    position.set(Position.PREFIX_ADC + 3, analogIn3 * adc3Ratio);
    position.set(Position.PREFIX_ADC + 4, analogIn4 * adc4Ratio);

    position.setAltitude(buf.readUnsignedByte() * 10);

    int output = buf.readUnsignedByte();
    for (int i = 0; i < 8; i++) {
        position.set(Position.PREFIX_IO + (i + 1), BitUtil.check(output, i));
    }
    buf.readUnsignedByte(); // status message buffer
}

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

License:Apache License

private List<Position> decodeBinaryE(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
    List<Position> positions = new LinkedList<>();

    buf.readerIndex(buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) ',') + 1);
    String imei = buf.readSlice(15).toString(StandardCharsets.US_ASCII);
    buf.skipBytes(1 + 3 + 1);// w w w .j  av  a  2 s  .  c om

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

    buf.readUnsignedIntLE(); // remaining cache
    int count = buf.readUnsignedShortLE();

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

        buf.readUnsignedShortLE(); // length
        buf.readUnsignedShortLE(); // index

        int paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x01:
                position.set(Position.KEY_EVENT, buf.readUnsignedByte());
                break;
            case 0x05:
                position.setValid(buf.readUnsignedByte() > 0);
                break;
            case 0x06:
                position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
                break;
            case 0x07:
                position.set(Position.KEY_RSSI, buf.readUnsignedByte());
                break;
            default:
                buf.readUnsignedByte();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x08:
                position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
                break;
            case 0x09:
                position.setCourse(buf.readUnsignedShortLE());
                break;
            case 0x0B:
                position.setAltitude(buf.readShortLE());
                break;
            case 0x19:
                position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.01);
                break;
            case 0x1A:
                position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.01);
                break;
            default:
                buf.readUnsignedShortLE();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            int id = buf.readUnsignedByte();
            switch (id) {
            case 0x02:
                position.setLatitude(buf.readIntLE() * 0.000001);
                break;
            case 0x03:
                position.setLongitude(buf.readIntLE() * 0.000001);
                break;
            case 0x04:
                position.setTime(new Date((946684800 + buf.readUnsignedIntLE()) * 1000)); // 2000-01-01
                break;
            case 0x0D:
                position.set("runtime", buf.readUnsignedIntLE());
                break;
            default:
                buf.readUnsignedIntLE();
                break;
            }
        }

        paramCount = buf.readUnsignedByte();
        for (int j = 0; j < paramCount; j++) {
            buf.readUnsignedByte(); // id
            buf.skipBytes(buf.readUnsignedByte()); // value
        }

        positions.add(position);
    }

    return positions;
}

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

License:Apache License

private Position parseNtcbPosition(DeviceSession deviceSession, ByteBuf buf) {
    Position position = new Position(getProtocolName());

    position.setDeviceId(deviceSession.getDeviceId());

    int format;//from   w  w  w.j ava 2s  .c  o  m
    if (buf.getUnsignedByte(buf.readerIndex()) == 0) {
        format = buf.readUnsignedShortLE();
    } else {
        format = buf.readUnsignedByte();
    }
    position.set("format", format);

    position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
    position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());

    buf.skipBytes(6); // event time

    short armedStatus = buf.readUnsignedByte();
    if (isFormat(format, F10, F20, F30, F40, F50, F51, F52)) {
        position.set(Position.KEY_ARMED, BitUtil.to(armedStatus, 7));
        if (BitUtil.check(armedStatus, 7)) {
            position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
        }
    } else if (isFormat(format, F60)) {
        position.set(Position.KEY_ARMED, BitUtil.check(armedStatus, 0));
        if (BitUtil.check(armedStatus, 1)) {
            position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
        }
    }

    position.set(Position.KEY_STATUS, buf.readUnsignedByte());
    position.set(Position.KEY_RSSI, buf.readUnsignedByte());

    if (isFormat(format, F10, F20, F30)) {
        int output = buf.readUnsignedShortLE();
        position.set(Position.KEY_OUTPUT, output);
        for (int i = 0; i < 16; i++) {
            position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(output, i));
        }
    } else if (isFormat(format, F50, F51, F52)) {
        short extField = buf.readUnsignedByte();
        position.set(Position.KEY_OUTPUT, BitUtil.to(extField, 2));
        position.set(Position.PREFIX_OUT + 1, BitUtil.check(extField, 0));
        position.set(Position.PREFIX_OUT + 2, BitUtil.check(extField, 1));
        position.set(Position.KEY_SATELLITES, BitUtil.from(extField, 2));
    } else if (isFormat(format, F40, F60)) {
        short output = buf.readUnsignedByte();
        position.set(Position.KEY_OUTPUT, BitUtil.to(output, 4));
        for (int i = 0; i < 4; i++) {
            position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(output, i));
        }
    }

    if (isFormat(format, F10, F20, F30, F40)) {
        int input = buf.readUnsignedShortLE();
        position.set(Position.KEY_INPUT, input);
        if (!isFormat(format, F40)) {
            for (int i = 0; i < 16; i++) {
                position.set(Position.PREFIX_IN + (i + 1), BitUtil.check(input, i));
            }
        } else {
            position.set(Position.PREFIX_IN + 1, BitUtil.check(input, 0));
            position.set(Position.PREFIX_IN + 2, BitUtil.check(input, 1));
            position.set(Position.PREFIX_IN + 3, BitUtil.check(input, 2));
            position.set(Position.PREFIX_IN + 4, BitUtil.check(input, 3));
            position.set(Position.PREFIX_IN + 5, BitUtil.between(input, 4, 7));
            position.set(Position.PREFIX_IN + 6, BitUtil.between(input, 7, 10));
            position.set(Position.PREFIX_IN + 7, BitUtil.between(input, 10, 12));
            position.set(Position.PREFIX_IN + 8, BitUtil.between(input, 12, 14));
        }
    } else if (isFormat(format, F50, F51, F52, F60)) {
        short input = buf.readUnsignedByte();
        position.set(Position.KEY_INPUT, input);
        for (int i = 0; i < 8; i++) {
            position.set(Position.PREFIX_IN + (i + 1), BitUtil.check(input, i));
        }
    }

    position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);
    position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);

    if (isFormat(format, F10, F20, F30)) {
        position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
    }

    if (isFormat(format, F10, F20, F50, F51, F52, F60)) {
        position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShortLE());
        position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShortLE());
    }
    if (isFormat(format, F60)) {
        position.set(Position.PREFIX_ADC + 3, buf.readUnsignedShortLE());
    }

    // Impulse counters
    if (isFormat(format, F20, F50, F51, F52, F60)) {
        buf.readUnsignedIntLE();
        buf.readUnsignedIntLE();
    }

    if (isFormat(format, F60)) {
        // Fuel
        buf.readUnsignedShortLE();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();

        position.set(Position.PREFIX_TEMP + 1, buf.readByte());
        position.set(Position.PREFIX_TEMP + 2, buf.readByte());
        position.set(Position.PREFIX_TEMP + 3, buf.readByte());
        position.set(Position.PREFIX_TEMP + 4, buf.readByte());
        position.set(Position.KEY_AXLE_WEIGHT, buf.readIntLE());
        position.set(Position.KEY_RPM, buf.readUnsignedShortLE());
    }

    if (isFormat(format, F20, F50, F51, F52, F60)) {
        int navSensorState = buf.readUnsignedByte();
        position.setValid(BitUtil.check(navSensorState, 1));
        if (isFormat(format, F60)) {
            position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2));
        }

        DateBuilder dateBuilder = new DateBuilder()
                .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
                .setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte() + 1, buf.readUnsignedByte());
        position.setTime(dateBuilder.getDate());

        if (isFormat(format, F60)) {
            position.setLatitude(buf.readIntLE() / 600000.0);
            position.setLongitude(buf.readIntLE() / 600000.0);
            position.setAltitude(buf.readIntLE() * 0.1);
        } else {
            position.setLatitude(buf.readFloatLE() / Math.PI * 180);
            position.setLongitude(buf.readFloatLE() / Math.PI * 180);
        }

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

        position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000);
        position.set(Position.KEY_DISTANCE, buf.readFloatLE() * 1000);

        // Segment times
        buf.readUnsignedShortLE();
        buf.readUnsignedShortLE();
    }

    // Other
    if (isFormat(format, F51, F52)) {
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
        buf.readUnsignedShortLE();
        buf.readByte();
        buf.readUnsignedShortLE();
    }

    // Four temperature sensors
    if (isFormat(format, F40, F52)) {
        position.set(Position.PREFIX_TEMP + 1, buf.readByte());
        position.set(Position.PREFIX_TEMP + 2, buf.readByte());
        position.set(Position.PREFIX_TEMP + 3, buf.readByte());
        position.set(Position.PREFIX_TEMP + 4, buf.readByte());
    }

    return position;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

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

    if (type == MSG_SHAKE_HAND && channel != null) {

        ByteBuf response = Unpooled.buffer(13);
        response.writeCharSequence("\r\n*KW", StandardCharsets.US_ASCII);
        response.writeByte(0);/*from  w w  w. j  a va 2s. com*/
        response.writeShortLE(response.capacity());
        response.writeShortLE(MSG_SHAKE_HAND_RESPONSE);
        response.writeByte(1); // status
        response.writeCharSequence("\r\n", StandardCharsets.US_ASCII);

        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));

    } else if (type == MSG_UPLOAD_POSITION || type == MSG_UPLOAD_POSITION_NEW || type == MSG_CONTROL_RESPONSE
            || type == MSG_ALARM) {

        boolean newFormat = false;
        if (type == MSG_UPLOAD_POSITION && buf.readableBytes() == 48
                || type == MSG_ALARM && buf.readableBytes() == 48
                || type == MSG_CONTROL_RESPONSE && buf.readableBytes() == 57) {
            newFormat = true;
        }

        Position position = new Position(getProtocolName());

        if (type == MSG_CONTROL_RESPONSE) {
            buf.readUnsignedIntLE(); // GIS ip
            buf.readUnsignedIntLE(); // GIS port
        }

        position.setValid(BitUtil.check(buf.readUnsignedByte(), 0));

        short alarm = buf.readUnsignedByte();
        switch (alarm) {
        case 1:
            position.set(Position.KEY_ALARM, Position.ALARM_SOS);
            break;
        case 2:
            position.set(Position.KEY_ALARM, Position.ALARM_OVERSPEED);
            break;
        case 3:
            position.set(Position.KEY_ALARM, Position.ALARM_GEOFENCE_EXIT);
            break;
        case 9:
            position.set(Position.KEY_ALARM, Position.ALARM_POWER_OFF);
            break;
        default:
            break;
        }

        if (newFormat) {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedIntLE()));
            position.setCourse(buf.readFloatLE());
        } else {
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
            position.setCourse(buf.readUnsignedShortLE());
        }
        position.setLongitude(buf.readFloatLE());
        position.setLatitude(buf.readFloatLE());

        if (!newFormat) {
            long timeValue = buf.readUnsignedIntLE();
            DateBuilder dateBuilder = new DateBuilder().setYear((int) BitUtil.from(timeValue, 26))
                    .setMonth((int) BitUtil.between(timeValue, 22, 26))
                    .setDay((int) BitUtil.between(timeValue, 17, 22))
                    .setHour((int) BitUtil.between(timeValue, 12, 17))
                    .setMinute((int) BitUtil.between(timeValue, 6, 12))
                    .setSecond((int) BitUtil.to(timeValue, 6));
            position.setTime(dateBuilder.getDate());
        }

        ByteBuf rawId;
        if (newFormat) {
            rawId = buf.readSlice(12);
        } else {
            rawId = buf.readSlice(11);
        }
        String id = rawId.toString(StandardCharsets.US_ASCII).replaceAll("[^\\p{Print}]", "");
        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id);
        if (deviceSession == null) {
            return null;
        }
        position.setDeviceId(deviceSession.getDeviceId());

        if (newFormat) {
            DateFormat dateFormat = new SimpleDateFormat("yy-MM-dd HH:mm:ss");
            position.setTime(dateFormat.parse(buf.readSlice(17).toString(StandardCharsets.US_ASCII)));
            buf.readByte();
        }

        if (!newFormat) {
            position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());
            position.set(Position.KEY_FUEL_LEVEL, buf.readUnsignedByte());
        } else if (type == MSG_UPLOAD_POSITION_NEW) {
            position.set(Position.PREFIX_TEMP + 1, buf.readShortLE());
            position.set(Position.KEY_ODOMETER, buf.readFloatLE());
        }

        return position;
    }

    return null;
}

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);
}

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;
    }/*  ww  w. j  a  va2s  . c  o m*/

    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;
}

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);// w  w w .  j  ava2  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;
}

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.jav  a  2s  . 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;
}

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

License:Apache License

private void decodeTags(Position position, ByteBuf buf) {

    int blockLength = buf.readUnsignedShort();
    int blockEnd = buf.readerIndex() + blockLength;

    if (blockLength > 0) {

        buf.readUnsignedByte(); // tag type

        int count = buf.readUnsignedByte();
        int tagLength = buf.readUnsignedByte();

        for (int i = 1; i <= count; i++) {
            int tagEnd = buf.readerIndex() + tagLength;

            buf.readUnsignedByte(); // status
            buf.readUnsignedShortLE(); // battery voltage

            position.set(Position.PREFIX_TEMP + i, (buf.readShortLE() & 0x3fff) * 0.1);

            buf.readUnsignedByte(); // humidity
            buf.readUnsignedByte(); // rssi

            buf.readerIndex(tagEnd);/* w  ww . j a v  a  2  s.  c  o  m*/
        }

    }

    buf.readerIndex(blockEnd);

}