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/*
* Copyright 2017 - 2018 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.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.helper.DateBuilder;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
public class PricolProtocolDecoder extends BaseProtocolDecoder {
public PricolProtocolDecoder(PricolProtocol protocol) {
super(protocol);
}
@Override
protected Object decode(
Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ByteBuf buf = (ByteBuf) msg;
buf.readUnsignedByte(); // header
DeviceSession deviceSession = getDeviceSession(
channel, remoteAddress, buf.readBytes(7).toString(StandardCharsets.US_ASCII));
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set("eventType", buf.readUnsignedByte());
position.set("packetVersion", buf.readUnsignedByte());
position.set(Position.KEY_STATUS, buf.readUnsignedByte());
position.set(Position.KEY_RSSI, buf.readUnsignedByte());
position.set(Position.KEY_GPS, buf.readUnsignedByte());
position.setTime(new DateBuilder()
.setDateReverse(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte())
.setTime(buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()).getDate());
position.setValid(true);
double lat = buf.getUnsignedShort(buf.readerIndex()) / 100;
lat += (buf.readUnsignedShort() % 100 * 10000 + buf.readUnsignedShort()) / 600000.0;
position.setLatitude(buf.readUnsignedByte() == 'S' ? -lat : lat);
double lon = buf.getUnsignedMedium(buf.readerIndex()) / 100;
lon += (buf.readUnsignedMedium() % 100 * 10000 + buf.readUnsignedShort()) / 600000.0;
position.setLongitude(buf.readUnsignedByte() == 'W' ? -lon : lon);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
position.set(Position.KEY_INPUT, buf.readUnsignedShort());
position.set(Position.KEY_OUTPUT, buf.readUnsignedByte());
position.set("analogAlerts", buf.readUnsignedByte());
position.set("customAlertTypes", buf.readUnsignedShort());
for (int i = 1; i <= 5; i++) {
position.set(Position.PREFIX_ADC + i, buf.readUnsignedShort());
}
position.set(Position.KEY_ODOMETER, buf.readUnsignedMedium());
position.set(Position.KEY_RPM, buf.readUnsignedShort());
if (channel != null) {
channel.writeAndFlush(new NetworkMessage(
Unpooled.copiedBuffer("ACK", StandardCharsets.US_ASCII), remoteAddress));
}
return position;
}
}
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