Example usage for io.netty.buffer ByteBuf getUnsignedByte

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

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Introduction

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

Prototype

public abstract short getUnsignedByte(int index);

Source Link

Document

Gets an unsigned byte at the specified absolute index in this buffer.

Usage

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;/*www. ja va2  s.c om*/
    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.NvsFrameDecoder.java

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 4 + 2) {
        return null;
    }/*  www .ja  va2s  .com*/

    int length;
    if (buf.getUnsignedByte(buf.readerIndex()) == 0) {
        length = 2 + buf.getUnsignedShort(buf.readerIndex());
    } else {
        length = 4 + 2 + buf.getUnsignedShort(buf.readerIndex() + 4) + 2;
    }

    if (buf.readableBytes() >= length) {
        return buf.readRetainedSlice(length);
    }

    return null;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    if (buf.getUnsignedByte(buf.readerIndex()) == 0) {

        buf.readUnsignedShort(); // length

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

        if (getDeviceSession(channel, remoteAddress, imei) != null) {
            sendResponse(channel, remoteAddress, "OK");
        } else {/*from  w  ww  . j  a v a 2  s. c o m*/
            sendResponse(channel, remoteAddress, "NO01");
        }

    } else {

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

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

        buf.skipBytes(4); // marker
        buf.readUnsignedShort(); // length
        buf.readLong(); // imei
        buf.readUnsignedByte(); // codec
        int count = buf.readUnsignedByte();

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

            position.setTime(new Date(buf.readUnsignedInt() * 1000));

            position.set("reason", buf.readUnsignedByte());

            position.setLongitude(buf.readInt() / 10000000.0);
            position.setLatitude(buf.readInt() / 10000000.0);
            position.setAltitude(buf.readShort());
            position.setCourse(buf.readUnsignedShort());

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

            position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
            position.setValid(buf.readUnsignedByte() != 0);

            buf.readUnsignedByte(); // used systems

            buf.readUnsignedByte(); // cause element id

            // Read 1 byte data
            int cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedByte());
            }

            // Read 2 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedShort());
            }

            // Read 4 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readUnsignedInt());
            }

            // Read 8 byte data
            cnt = buf.readUnsignedByte();
            for (int j = 0; j < cnt; j++) {
                position.set(Position.PREFIX_IO + buf.readUnsignedByte(), buf.readLong());
            }

            positions.add(position);
        }

        return positions;

    }

    return null;
}

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

License:Apache License

private Position decodeMgMessage(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {

    buf.readUnsignedByte(); // tag
    int flags = buf.getUnsignedByte(buf.readerIndex());

    DeviceSession deviceSession;//from w ww. j ava2 s .c o m
    if (BitUtil.check(flags, 6)) {
        buf.readUnsignedByte(); // flags
        deviceSession = getDeviceSession(channel, remoteAddress);
    } else {
        String imei = ByteBufUtil.hexDump(buf.readSlice(8)).substring(1);
        deviceSession = getDeviceSession(channel, remoteAddress, imei);
    }

    if (deviceSession == null) {
        return null;
    }

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

    buf.skipBytes(8); // imsi

    int date = buf.readUnsignedShort();

    DateBuilder dateBuilder = new DateBuilder()
            .setDate(2010 + BitUtil.from(date, 12), BitUtil.between(date, 8, 12), BitUtil.to(date, 8))
            .setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), 0);

    position.setValid(true);
    position.setLatitude(convertCoordinate(buf.readInt()));
    position.setLongitude(convertCoordinate(buf.readInt()));

    position.setAltitude(UnitsConverter.metersFromFeet(buf.readShort()));
    position.setCourse(buf.readUnsignedShort());
    position.setSpeed(UnitsConverter.knotsFromMph(buf.readUnsignedByte()));

    position.set(Position.KEY_POWER, buf.readUnsignedByte() * 0.1);
    position.set(Position.PREFIX_IO + 1, buf.readUnsignedByte());

    dateBuilder.setSecond(buf.readUnsignedByte());
    position.setTime(dateBuilder.getDate());

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

    int index = buf.readUnsignedByte();

    position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
    position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
    position.set(Position.KEY_ODOMETER, (long) (buf.readUnsignedInt() * 1609.34));

    if (channel != null && BitUtil.check(flags, 7)) {
        ByteBuf response = Unpooled.buffer();
        response.writeByte(MSG_ACKNOWLEDGEMENT);
        response.writeByte(index);
        response.writeByte(0x00);
        channel.writeAndFlush(new NetworkMessage(response, remoteAddress));
    }

    return position;
}

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

License:Apache License

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

    ByteBuf buf = (ByteBuf) msg;

    if (buf.getUnsignedByte(buf.readerIndex()) == 0x7e) {
        return decodeArMessage(channel, remoteAddress, buf);
    } else {//from ww w  .  ja  v a2  s.  co m
        return decodeMgMessage(channel, remoteAddress, buf);
    }
}

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

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    int length = 6;

    if (buf.readableBytes() >= length) {

        int type = buf.getUnsignedByte(buf.readerIndex() + 2) & 0x0f;

        if (type == OrionProtocolDecoder.MSG_USERLOG && buf.readableBytes() >= length + 5) {

            int index = buf.readerIndex() + 3;
            int count = buf.getUnsignedByte(index) & 0x0f;
            index += 5;/*  w w w  . j  av  a  2  s  .  c  o m*/
            length += 5;

            for (int i = 0; i < count; i++) {
                if (buf.readableBytes() < length) {
                    return null;
                }
                int logLength = buf.getUnsignedByte(index + 1);
                index += logLength;
                length += logLength;
            }

            if (buf.readableBytes() >= length) {
                return buf.readRetainedSlice(length);
            }

        } else if (type == OrionProtocolDecoder.MSG_SYSLOG && buf.readableBytes() >= length + 12) {

            length += buf.getUnsignedShortLE(buf.readerIndex() + 8);
            if (buf.readableBytes() >= length) {
                return buf.readRetainedSlice(length);
            }

        }
    }

    return null;
}

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

License:Apache License

private static void sendResponse(Channel channel, ByteBuf buf) {
    if (channel != null) {
        ByteBuf response = Unpooled.buffer(4);
        response.writeByte('*');
        response.writeShort(buf.getUnsignedShort(buf.writerIndex() - 2));
        response.writeByte(buf.getUnsignedByte(buf.writerIndex() - 3));
        channel.writeAndFlush(new NetworkMessage(response, channel.remoteAddress()));
    }/*from  w  ww . j a v  a2 s  .c om*/
}

From source file:org.traccar.protocol.Pt502FrameDecoder.java

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 10) {
        return null;
    }//from   ww  w  .  j a v a2  s.c  om

    if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf
            && buf.toString(buf.readerIndex() + BINARY_HEADER, 4, StandardCharsets.US_ASCII).equals("$PHD")) {

        int length = buf.getUnsignedShortLE(buf.readerIndex() + 3);
        if (buf.readableBytes() >= length) {
            buf.skipBytes(BINARY_HEADER);
            ByteBuf result = buf.readRetainedSlice(length - BINARY_HEADER - 2);
            buf.skipBytes(2); // line break
            return result;
        }

    } else {

        if (buf.getUnsignedByte(buf.readerIndex()) == 0xbf) {
            buf.skipBytes(BINARY_HEADER);
        }

        int index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\r');
        if (index < 0) {
            index = buf.indexOf(buf.readerIndex(), buf.writerIndex(), (byte) '\n');
        }

        if (index > 0) {
            ByteBuf result = buf.readRetainedSlice(index - buf.readerIndex());
            while (buf.isReadable()
                    && (buf.getByte(buf.readerIndex()) == '\r' || buf.getByte(buf.readerIndex()) == '\n')) {
                buf.skipBytes(1);
            }
            return result;
        }

    }

    return null;
}

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

License:Apache License

private int messageLength(ByteBuf buf) {
    switch (buf.getUnsignedByte(buf.readerIndex())) {
    case RoboTrackProtocolDecoder.MSG_ID:
        return 69;
    case RoboTrackProtocolDecoder.MSG_ACK:
        return 3;
    case RoboTrackProtocolDecoder.MSG_GPS:
    case RoboTrackProtocolDecoder.MSG_GSM:
    case RoboTrackProtocolDecoder.MSG_IMAGE_START:
        return 24;
    case RoboTrackProtocolDecoder.MSG_IMAGE_DATA:
        return 8 + buf.getUnsignedShortLE(buf.readerIndex() + 1);
    case RoboTrackProtocolDecoder.MSG_IMAGE_END:
        return 6;
    default://ww  w .j a  v  a  2 s .  c o  m
        return Integer.MAX_VALUE;
    }
}

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

License:Apache License

@Override
protected Object decode(ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {

    if (buf.readableBytes() < 17) {
        return null;
    }//w w  w .  ja va2  s .  co m

    int length = 17 + buf.getUnsignedByte(16) + (BitUtil.from(buf.getUnsignedByte(15), 6) << 6);
    if (buf.readableBytes() >= length) {
        return buf.readBytes(length);
    }

    return null;
}