/*
* Copyright 2017 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 org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
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 AlematicsProtocolDecoder extends BaseProtocolDecoder {
public AlematicsProtocolDecoder(AlematicsProtocol protocol) {
super(protocol);
}
private static final Pattern PATTERN = new PatternBuilder()
.text("$T,")
.number("(d+),") // type
.number("(d+),") // index
.number("(d+),") // id
.number("(dddd)(dd)(dd)") // gps date
.number("(dd)(dd)(dd),") // gps time
.number("(dddd)(dd)(dd)") // device date
.number("(dd)(dd)(dd),") // device time
.number("(-?d+.d+),") // latitude
.number("(-?d+.d+),") // longitude
.number("(d+),") // speed
.number("(d+),") // course
.number("(-?d+),") // altitude
.number("(d+.d),") // hdop
.number("(d+),") // satellites
.number("(d+),") // input
.number("(d+),") // output
.number("(d+.d+),") // adc
.number("(d+.d+),") // power
.number("(d+),") // odometer
.number("(d+),") // extra mask
.expression("(.*)") // extra data
.compile();
private void decodeExtras(Position position, Parser parser) {
int mask = parser.nextInt();
String[] data = parser.next().split(",");
int index = 0;
if (BitUtil.check(mask, 0)) {
index++; // pulse counter 3
}
if (BitUtil.check(mask, 1)) {
position.set(Position.KEY_POWER, Integer.parseInt(data[index++]));
}
if (BitUtil.check(mask, 2)) {
position.set(Position.KEY_BATTERY, Integer.parseInt(data[index++]));
}
if (BitUtil.check(mask, 3)) {
position.set(Position.KEY_OBD_SPEED, Integer.parseInt(data[index++]));
}
if (BitUtil.check(mask, 4)) {
position.set(Position.KEY_RPM, Integer.parseInt(data[index++]));
}
if (BitUtil.check(mask, 5)) {
position.set(Position.KEY_RSSI, Integer.parseInt(data[index++]));
}
if (BitUtil.check(mask, 6)) {
index++; // pulse counter 2
}
if (BitUtil.check(mask, 7)) {
index++; // magnetic rotation sensor rpm
}
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
Parser parser = new Parser(PATTERN, (String) msg);
if (!parser.matches()) {
return null;
}
Position position = new Position();
position.setProtocol(getProtocolName());
position.set(Position.KEY_TYPE, parser.nextInt());
position.set(Position.KEY_INDEX, parser.nextInt());
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, parser.next());
if (deviceSession == null) {
return null;
}
position.setDeviceId(deviceSession.getDeviceId());
position.setFixTime(parser.nextDateTime());
position.setDeviceTime(parser.nextDateTime());
position.setValid(true);
position.setLatitude(parser.nextDouble(0));
position.setLongitude(parser.nextDouble(0));
position.setSpeed(UnitsConverter.knotsFromKph(parser.nextInt(0)));
position.setCourse(parser.nextInt(0));
position.setAltitude(parser.nextInt(0));
position.set(Position.KEY_HDOP, parser.nextDouble());
position.set(Position.KEY_SATELLITES, parser.nextInt());
position.set(Position.KEY_INPUT, parser.nextInt());
position.set(Position.KEY_OUTPUT, parser.nextInt());
position.set(Position.PREFIX_ADC + 1, parser.nextDouble());
position.set(Position.KEY_POWER, parser.nextDouble());
position.set(Position.KEY_ODOMETER, parser.nextInt());
decodeExtras(position, parser);
return position;
}
}