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/*
* Copyright 2017 - 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.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.session.DeviceSession;
import org.traccar.Protocol;
import org.traccar.helper.Parser;
import org.traccar.helper.PatternBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.util.regex.Pattern;
public class VtfmsProtocolDecoder extends BaseProtocolDecoder {
private static final String[] DIRECTIONS = new String[] {"N", "NE", "E", "SE", "S", "SW", "W", "NW"};
public VtfmsProtocolDecoder(Protocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("(")
.number("(d{15}),") // imei
.number("[0-9A-Z]{3}dd,") // packet count
.number("(dd),") // packet id
.number("[^,]*,") // reserved
.number("(d+)?,") // rssi
.number("(?:d+)?,") // fix status
.number("(d+)?,") // satellites
.number("[^,]*,") // reserved
.expression("([AV]),") // validity
.number("(dd)(dd)(dd),") // time (hhmmss)
.number("(dd)(dd)(dd),") // time (ddmmyy)
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(?:(d+)|([NESW]{1,2})),") // course
.number("(d+),") // speed
.number("(d+),") // hours
.number("(d+),") // idle hours
.expression("[KNT],") // antenna status
.number("(d+),") // odometer
.expression("([01]),") // power status
.number("(d+.d+),") // power voltage
.number("[^,]*,") // reserved
.number("(d+)?,") // fuel level
.number("(d+.d+)?,") // adc 1
.number("[^,]*,") // reserved
.number("(d+.d+)?,") // adc 2
.expression("([01]),") // di 1
.expression("([01]),") // di 2
.expression("([01]),") // di 3
.expression("([01]),") // di 4
.expression("([01]),") // do 1
.expression("([01]),") // do 2
.expression("([01]),") // do 3
.number("[^,]*,") // reserved
.number("[^,]*") // reserved
.text(")")
.number("ddd") // checksum
.compile();
private String decodeAlarm(int value) {
return switch (value) {
case 10 -> Position.ALARM_OVERSPEED;
case 14 -> Position.ALARM_POWER_CUT;
case 15 -> Position.ALARM_POWER_RESTORED;
case 32 -> Position.ALARM_BRAKING;
case 33 -> Position.ALARM_ACCELERATION;
default -> null;
};
}
private double convertToDegrees(double value) {
double degrees = Math.floor(value / 100);
return degrees + (value - degrees * 100) / 60;
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_ALARM, decodeAlarm(parser.nextInt()));
position.set(Position.KEY_RSSI, parser.nextInt());
position.set(Position.KEY_SATELLITES, parser.nextInt());
position.setValid(parser.next().equals("A"));
position.setTime(parser.nextDateTime(Parser.DateTimeFormat.HMS_DMY));
double latitude = parser.nextDouble();
double longitude = parser.nextDouble();
if (Math.abs(latitude) > 90 || Math.abs(longitude) > 180) {
position.setLatitude(convertToDegrees(latitude));
position.setLongitude(convertToDegrees(longitude));
} else {
position.setLatitude(latitude);
position.setLongitude(longitude);
}
position.setCourse(parser.nextDouble(0));
if (parser.hasNext()) {
String direction = parser.next();
for (int i = 0; i < DIRECTIONS.length; i++) {
if (direction.equals(DIRECTIONS[i])) {
position.setCourse(i * 45.0);
break;
}
}
}
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextDouble()));
position.set(Position.KEY_HOURS, UnitsConverter.msFromHours(parser.nextInt()));
position.set("idleHours", parser.nextInt());
position.set(Position.KEY_ODOMETER, parser.nextInt() * 100);
position.set(Position.KEY_CHARGE, parser.next().equals("1"));
position.set(Position.KEY_POWER, parser.nextDouble());
position.set(Position.KEY_FUEL_LEVEL, parser.nextInt());
position.set(Position.PREFIX_ADC + 1, parser.nextDouble());
position.set(Position.PREFIX_ADC + 2, parser.nextDouble());
position.set(Position.PREFIX_IN + 1, parser.nextInt());
position.set(Position.PREFIX_IN + 2, parser.nextInt());
position.set(Position.PREFIX_IN + 3, parser.nextInt());
position.set(Position.PREFIX_IN + 4, parser.nextInt());
position.set(Position.PREFIX_OUT + 1, parser.nextInt());
position.set(Position.PREFIX_OUT + 2, parser.nextInt());
position.set(Position.PREFIX_OUT + 3, parser.nextInt());
return position;
}
}
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