diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/NyitechProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/NyitechProtocolDecoder.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/NyitechProtocolDecoder.java b/src/main/java/org/traccar/protocol/NyitechProtocolDecoder.java new file mode 100644 index 000000000..62b41a2ea --- /dev/null +++ b/src/main/java/org/traccar/protocol/NyitechProtocolDecoder.java @@ -0,0 +1,170 @@ +/* + * 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.DateBuilder; +import org.traccar.helper.ObdDecoder; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; + +public class NyitechProtocolDecoder extends BaseProtocolDecoder { + + public NyitechProtocolDecoder(Protocol protocol) { + super(protocol); + } + + public static final short MSG_LOGIN = 0x1001; + public static final short MSG_COMPREHENSIVE_LIVE = 0x2001; + public static final short MSG_COMPREHENSIVE_HISTORY = 0x2002; + public static final short MSG_ALARM = 0x2003; + public static final short MSG_FIXED = 0x2004; + + 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); + } + + private String decodeAlarm(int type) { + switch (type) { + case 0x09: + return Position.ALARM_ACCELERATION; + case 0x0a: + return Position.ALARM_BRAKING; + case 0x0b: + return Position.ALARM_CORNERING; + case 0x0e: + return Position.ALARM_SOS; + default: + return null; + } + } + + @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; + } + + 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; + } + +} |