Example usage for io.netty.buffer ByteBuf readIntLE

Introduction

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

Prototype

public abstract int readIntLE();

Source Link

Document

Gets a 32-bit integer at the current readerIndex in the Little Endian Byte Order and increases the readerIndex by 4 in this buffer.

Usage

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

License:Apache License

private Position parseTrackingData(DeviceSession deviceSession, ByteBuf buf, int sequenceNumber,
        long timestamp) {
    Position position = new Position(getProtocolName());

    position.set(Position.KEY_INDEX, sequenceNumber);
    position.setDeviceId(deviceSession.getDeviceId());
    position.setTime(convertTimestamp(timestamp));

    buf.readUnsignedByte(); // tracking mode

    short flags = buf.readUnsignedByte();
    position.setValid((flags & 0x01) == 0x01);

    buf.readUnsignedShortLE(); // duration

    position.setLatitude(buf.readIntLE() * 0.0000001);
    position.setLongitude(buf.readIntLE() * 0.0000001);

    position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
    position.setCourse(buf.readUnsignedByte() * 2.0);

    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
    position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
    position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());

    return position;
}

---

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;//w w  w  .  j av a  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.NavisProtocolDecoder.java

License:Apache License

private Position parseFlexPosition(DeviceSession deviceSession, ByteBuf buf) {

    Position position = new Position(getProtocolName());

    position.setDeviceId(deviceSession.getDeviceId());

    int status = 0;
    short input = 0;
    short output = 0;

    for (int i = 0; i < flexBitFieldSize; i++) {
        if (!checkFlexBitfield(i)) {
            continue;
        }/*from  w  w w .  ja  v a 2  s.c o m*/

        switch (i) {
        case 0:
            position.set(Position.KEY_INDEX, buf.readUnsignedIntLE());
            break;
        case 1:
            position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
            break;
        case 3:
            short armedStatus = buf.readUnsignedByte();
            position.set(Position.KEY_ARMED, BitUtil.check(armedStatus, 0));
            if (BitUtil.check(armedStatus, 1)) {
                position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
            }
            break;
        case 4:
            status = buf.readUnsignedByte();
            position.set(Position.KEY_STATUS, status);
            break;
        case 5:
            int status2 = buf.readUnsignedByte();
            position.set(Position.KEY_STATUS, (short) (BitUtil.to(status, 8) | (status2 << 8)));
            break;
        case 6:
            position.set(Position.KEY_RSSI, buf.readUnsignedByte());
            break;
        case 7:
            int navSensorState = buf.readUnsignedByte();
            position.setValid(BitUtil.check(navSensorState, 1));
            position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2));
            break;
        case 8:
            position.setTime(new DateBuilder(new Date(buf.readUnsignedIntLE() * 1000)).getDate());
            break;
        case 9:
            position.setLatitude(buf.readIntLE() / 600000.0);
            break;
        case 10:
            position.setLongitude(buf.readIntLE() / 600000.0);
            break;
        case 11:
            position.setAltitude(buf.readIntLE() * 0.1);
            break;
        case 12:
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE()));
            break;
        case 13:
            position.setCourse(buf.readUnsignedShortLE());
            break;
        case 14:
            position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000);
            break;
        case 15:
            position.set(Position.KEY_DISTANCE, buf.readFloatLE() * 1000);
            break;
        case 18:
            position.set(Position.KEY_POWER, buf.readUnsignedShortLE() * 0.001);
            break;
        case 19:
            position.set(Position.KEY_BATTERY, buf.readUnsignedShortLE() * 0.001);
            break;
        case 20:
        case 21:
        case 22:
        case 23:
        case 24:
        case 25:
        case 26:
        case 27:
            position.set(Position.PREFIX_ADC + (i - 19), buf.readUnsignedShortLE());
            break;
        case 28:
            input = buf.readUnsignedByte();
            position.set(Position.KEY_INPUT, input);
            for (int k = 0; k < 8; k++) {
                position.set(Position.PREFIX_IN + (k + 1), BitUtil.check(input, k));
            }
            break;
        case 29:
            short input2 = buf.readUnsignedByte();
            position.set(Position.KEY_INPUT, (short) (BitUtil.to(input, 8) | (input2 << 8)));
            for (int k = 0; k < 8; k++) {
                position.set(Position.PREFIX_IN + (k + 9), BitUtil.check(input2, k));
            }
            break;
        case 30:
            output = buf.readUnsignedByte();
            position.set(Position.KEY_OUTPUT, output);
            for (int k = 0; k < 8; k++) {
                position.set(Position.PREFIX_OUT + (k + 1), BitUtil.check(output, k));
            }
            break;
        case 31:
            short output2 = buf.readUnsignedByte();
            position.set(Position.KEY_OUTPUT, (short) (BitUtil.to(output, 8) | (output2 << 8)));
            for (int k = 0; k < 8; k++) {
                position.set(Position.PREFIX_OUT + (k + 9), BitUtil.check(output2, k));
            }
            break;
        case 36:
            position.set(Position.KEY_HOURS, buf.readUnsignedIntLE() * 1000);
            break;
        case 44:
        case 45:
        case 46:
        case 47:
        case 48:
        case 49:
        case 50:
        case 51:
            position.set(Position.PREFIX_TEMP + (i - 43), buf.readByte());
            break;
        case 68:
            position.set("can-speed", buf.readUnsignedByte());
            break;
        // FLEX 2.0
        case 69:
            int satVisible = 0;
            for (int k = 0; k < 8; k++) {
                satVisible += buf.readUnsignedByte();
            }
            position.set(Position.KEY_SATELLITES_VISIBLE, satVisible);
            break;
        case 70:
            position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
            position.set(Position.KEY_PDOP, buf.readUnsignedByte() * 0.1);
            break;
        default:
            if (i < FLEX_FIELDS_SIZES.length) {
                buf.skipBytes(FLEX_FIELDS_SIZES[i]);
            }
            break;
        }
    }

    return position;
}

---

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

License:Apache License

private Position parseFlex20Position(DeviceSession deviceSession, ByteBuf buf) {

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

    int length = buf.readUnsignedShort();
    if (length <= buf.readableBytes() && buf.readUnsignedByte() == 0x0A) {

        buf.readUnsignedByte(); // length of static part

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

        position.set(Position.KEY_EVENT, buf.readUnsignedShortLE());
        buf.readUnsignedInt(); // event time

        int navSensorState = buf.readUnsignedByte();
        position.setValid(BitUtil.check(navSensorState, 1));
        position.set(Position.KEY_SATELLITES, BitUtil.from(navSensorState, 2));

        position.setTime(new DateBuilder(new Date(buf.readUnsignedIntLE() * 1000)).getDate());
        position.setLatitude(buf.readIntLE() / 600000.0);
        position.setLongitude(buf.readIntLE() / 600000.0);
        position.setAltitude(buf.readIntLE() * 0.1);
        position.setSpeed(UnitsConverter.knotsFromKph(buf.readFloatLE()));
        position.setCourse(buf.readUnsignedShortLE());
        position.set(Position.KEY_ODOMETER, buf.readFloatLE() * 1000);

        buf.skipBytes(length - buf.readerIndex() - 1); // skip unused part
    }/*  w  ww.j a v  a2  s.  co m*/

    return position;
}

---

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 v a  2  s .co  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);/*from   w  w w  .j a  v a  2s .  c  o m*/
        }

        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.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);//  w  w  w. j a va  2  s. co m
        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;
}

---

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
    }//w  w  w  .  j  ava  2  s . c  om

    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;
}

---

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 w w .  j a  v  a  2 s .  c o m

    } 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;
}

---

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

License:Apache License

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

    FullHttpRequest request = (FullHttpRequest) msg;
    JsonObject json = Json//ww  w . j  a  va2 s.  c o m
            .createReader(new StringReader(URLDecoder
                    .decode(request.content().toString(StandardCharsets.UTF_8).split("=")[0], "UTF-8")))
            .readObject();

    DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, json.getString("device"));
    if (deviceSession == null) {
        sendResponse(channel, HttpResponseStatus.BAD_REQUEST);
        return null;
    }

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

    position.setTime(new Date(json.getInt("time") * 1000L));

    ByteBuf buf = Unpooled.wrappedBuffer(DataConverter.parseHex(json.getString("data")));
    try {
        int type = buf.readUnsignedByte() >> 4;
        if (type == 0) {

            position.setValid(true);
            position.setLatitude(buf.readIntLE() * 0.0000001);
            position.setLongitude(buf.readIntLE() * 0.0000001);
            position.setCourse(buf.readUnsignedByte() * 2);
            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));

            position.set(Position.KEY_BATTERY, buf.readUnsignedByte() * 0.025);

        } else {

            getLastLocation(position, position.getDeviceTime());

        }
    } finally {
        buf.release();
    }

    position.set(Position.KEY_RSSI, json.getJsonNumber("rssi").doubleValue());
    position.set(Position.KEY_INDEX, json.getInt("seqNumber"));

    sendResponse(channel, HttpResponseStatus.OK);
    return position;
}

---

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