diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/RadarProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/RadarProtocolDecoder.java | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/RadarProtocolDecoder.java b/src/main/java/org/traccar/protocol/RadarProtocolDecoder.java new file mode 100644 index 000000000..765171e9c --- /dev/null +++ b/src/main/java/org/traccar/protocol/RadarProtocolDecoder.java @@ -0,0 +1,191 @@ +/* + * Copyright 2019 Anton Tananaev (anton@traccar.org) + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.traccar.protocol; + +import io.netty.buffer.ByteBuf; +import io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.Protocol; +import org.traccar.helper.BitUtil; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.util.BitSet; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; + +public class RadarProtocolDecoder extends BaseProtocolDecoder { + + public RadarProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static final int MSG_TRACKING = 0x4C; + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + buf.readUnsignedByte(); // product id + buf.readUnsignedByte(); // product version + + String serialNumber = String.valueOf(buf.readUnsignedInt()); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, serialNumber); + if (deviceSession == null) { + return null; + } + + buf.readUnsignedByte(); // index + buf.readUnsignedInt(); // timestamp + int type = buf.readUnsignedByte(); + buf.readUnsignedShort(); // length + + if (type == MSG_TRACKING) { + + buf.readUnsignedShort(); // memory count + buf.readUnsignedShort(); // memory index + int count = buf.readUnsignedShort(); + buf.readUnsignedShort(); // first index + + List<Position> positions = new LinkedList<>(); + + for (int index = 0; index < count; index++) { + + Position position = new Position(getProtocolName()); + + position.set(Position.KEY_EVENT, buf.readUnsignedShort()); + + int maskLength = buf.readUnsignedByte(); + BitSet mask = BitSet.valueOf(buf.nioBuffer(buf.readerIndex(), maskLength)); + buf.skipBytes(maskLength); + + buf.readUnsignedShort(); // length + + if (mask.get(0)) { + position.setDeviceTime(new Date(buf.readUnsignedInt() * 1000)); + } + if (mask.get(1)) { + position.setFixTime(new Date(buf.readUnsignedInt() * 1000)); + } + if (mask.get(2)) { + position.setLatitude(buf.readInt() / 360000.0); + } + if (mask.get(3)) { + position.setLongitude(buf.readInt() / 360000.0); + } + if (mask.get(4)) { + position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort())); + } + if (mask.get(5)) { + position.setCourse(buf.readUnsignedShort() * 0.1); + } + if (mask.get(6)) { + position.setAltitude(buf.readShort()); + } + if (mask.get(7)) { + int flags = buf.readUnsignedByte(); + position.setValid(BitUtil.check(flags, 0)); + position.set(Position.KEY_SATELLITES, BitUtil.from(flags, 4)); + } + if (mask.get(8)) { + long flags = buf.readUnsignedInt(); + position.set(Position.KEY_IGNITION, BitUtil.check(flags, 0)); + position.set(Position.KEY_CHARGE, BitUtil.check(flags, 1)); + position.set(Position.KEY_MOTION, BitUtil.check(flags, 2)); + for (int i = 0; i < 3; i++) { + position.set(Position.PREFIX_IN + i, BitUtil.check(flags, 4 + i)); + } + } + if (mask.get(9)) { + int flags = buf.readUnsignedShort(); + position.set(Position.KEY_BLOCKED, BitUtil.check(flags, 0)); + position.set(Position.PREFIX_IN + 0, BitUtil.check(flags, 4)); + } + for (int i = 10; i <= 14; i++) { + if (mask.get(i)) { + buf.readUnsignedShort(); // reserved + } + } + if (mask.get(15)) { + position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 100); + } + if (mask.get(16)) { + buf.readUnsignedInt(); // reserved + } + for (int i = 17; i <= 27; i++) { + if (mask.get(i)) { + buf.readUnsignedByte(); // reserved + } + } + for (int i = 28; i <= 37; i += 2) { + if (mask.get(i)) { + buf.skipBytes(12); // reserved + } + if (mask.get(i + 1)) { + buf.readUnsignedByte(); // reserved + } + } + if (mask.get(38)) { + buf.skipBytes(6); // driver id + } + if (mask.get(39)) { + buf.readUnsignedShort(); // hardware problems + } + if (mask.get(40)) { + buf.readShort(); // acceleration x + } + if (mask.get(41)) { + buf.readShort(); // acceleration y + } + if (mask.get(42)) { + buf.readShort(); // acceleration z + } + if (mask.get(43)) { + buf.skipBytes(10); // operator + } + if (mask.get(44)) { + buf.readUnsignedShort(); // power + } + for (int i = 45; i <= 49; i++) { + if (mask.get(i)) { + buf.readUnsignedByte(); // reserved + } + } + if (mask.get(50)) { + buf.readShort(); // tilt + } + + if (position.getDeviceTime() != null && position.getFixTime() != null) { + positions.add(position); + } + + } + + // ACK 0x9C + + return positions.isEmpty() ? null : positions; + + } + + return null; + } + +} |