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/*
* Copyright 2013 - 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* 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 java.net.SocketAddress;
import java.util.ArrayList;
import java.util.Date;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.Context;
import org.traccar.helper.ChannelBufferTools;
import org.traccar.helper.Checksum;
import org.traccar.helper.Log;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Event;
import org.traccar.model.Position;
public class AplicomProtocolDecoder extends BaseProtocolDecoder {
public AplicomProtocolDecoder(AplicomProtocol protocol) {
super(protocol);
}
private static final long IMEI_BASE_TC65_V20 = 0x1437207000000L;
private static final long IMEI_BASE_TC65_V28 = 358244010000000L;
private static final long IMEI_BASE_TC65I_V11 = 0x14143B4000000L;
private static boolean validateImei(long imei) {
return Checksum.luhn(imei / 10) == imei % 10;
}
private static long imeiFromUnitId(long unitId) {
if (unitId == 0) {
return 0;
} else {
// Try TC65i
long imei = IMEI_BASE_TC65I_V11 + unitId;
if (validateImei(imei)) {
return imei;
}
// Try TC65 v2.8
imei = IMEI_BASE_TC65_V28 + ((unitId + 0xA8180) & 0xFFFFFF);
if (validateImei(imei)) {
return imei;
}
// Try TC65 v2.0
imei = IMEI_BASE_TC65_V20 + unitId;
if (validateImei(imei)) {
return imei;
}
}
return unitId;
}
private static final int DEFAULT_SELECTOR = 0x0002FC;
private static final int EVENT_DATA = 119;
private void decodeEventData(int event, ChannelBuffer buf) {
switch (event) {
case 2:
case 40:
buf.readUnsignedByte();
break;
case 9:
buf.readUnsignedMedium();
break;
case 31:
case 32:
buf.readUnsignedShort();
break;
case 38:
buf.skipBytes(4 * 9);
break;
case 113:
buf.readUnsignedInt();
buf.readUnsignedByte();
break;
case 121:
case 142:
buf.readLong();
break;
case 130:
buf.readUnsignedInt(); // incorrect
break;
default:
break;
}
}
private void decodeCanData(ChannelBuffer buf, Position position) {
buf.readUnsignedMedium(); // packet identifier
buf.readUnsignedByte(); // version
int count = buf.readUnsignedByte();
buf.readUnsignedByte(); // batch count
buf.readUnsignedShort(); // selector bit
buf.readUnsignedInt(); // timestamp
buf.skipBytes(8);
ArrayList<ChannelBuffer> values = new ArrayList<>(count);
for (int i = 0; i < count; i++) {
values.add(buf.readBytes(8));
}
for (int i = 0; i < count; i++) {
ChannelBuffer value = values.get(i);
switch (buf.readInt()) {
case 0x20D:
position.set(Event.KEY_RPM, ChannelBuffers.swapShort(value.readShort()));
position.set("diesel-temperature", ChannelBuffers.swapShort(value.readShort()) * 0.1);
position.set("battery-voltage", ChannelBuffers.swapShort(value.readShort()) * 0.01);
position.set("supply-air-temp-dep1", ChannelBuffers.swapShort(value.readShort()) * 0.1);
break;
case 0x30D:
position.set("active-alarm", ChannelBufferTools.readHexString(value, 16));
break;
case 0x40C:
position.set("air-temp-dep1", ChannelBuffers.swapShort(value.readShort()) * 0.1);
position.set("air-temp-dep2", ChannelBuffers.swapShort(value.readShort()) * 0.1);
break;
case 0x40D:
position.set("cold-unit-state", ChannelBufferTools.readHexString(value, 16));
break;
case 0x50C:
position.set("defrost-temp-dep1", ChannelBuffers.swapShort(value.readShort()) * 0.1);
position.set("defrost-temp-dep2", ChannelBuffers.swapShort(value.readShort()) * 0.1);
break;
case 0x50D:
position.set("condenser-pressure", ChannelBuffers.swapShort(value.readShort()) * 0.1);
position.set("suction-pressure", ChannelBuffers.swapShort(value.readShort()) * 0.1);
break;
case 0x58C:
value.readByte();
value.readShort(); // index
switch (value.readByte()) {
case 0x01:
position.set("setpoint-zone1", ChannelBuffers.swapInt(value.readInt()) * 0.1);
break;
case 0x02:
position.set("setpoint-zone2", ChannelBuffers.swapInt(value.readInt()) * 0.1);
break;
case 0x05:
position.set("unit-type", ChannelBuffers.swapInt(value.readInt()));
break;
case 0x13:
position.set("diesel-hours", ChannelBuffers.swapInt(value.readInt()) / 60 / 60);
break;
case 0x14:
position.set("electric-hours", ChannelBuffers.swapInt(value.readInt()) / 60 / 60);
break;
case 0x17:
position.set("service-indicator", ChannelBuffers.swapInt(value.readInt()));
break;
case 0x18:
position.set("software-version", ChannelBuffers.swapInt(value.readInt()) * 0.01);
break;
default:
break;
}
break;
default:
Log.warning(new UnsupportedOperationException());
break;
}
}
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedByte(); // marker
int version = buf.readUnsignedByte();
String imei;
if ((version & 0x80) != 0) {
imei = String.valueOf((buf.readUnsignedInt() << (3 * 8)) | buf.readUnsignedMedium());
} else {
imei = String.valueOf(imeiFromUnitId(buf.readUnsignedMedium()));
}
buf.readUnsignedShort(); // length
int selector = DEFAULT_SELECTOR;
if ((version & 0x40) != 0) {
selector = buf.readUnsignedMedium();
}
Position position = new Position();
position.setProtocol(getProtocolName());
if (!identify(imei, channel)) {
return null;
}
position.setDeviceId(getDeviceId());
int event = buf.readUnsignedByte();
position.set(Event.KEY_EVENT, event);
buf.readUnsignedByte();
if ((selector & 0x0008) != 0) {
position.setValid((buf.readUnsignedByte() & 0x40) != 0);
} else {
return null; // no location data
}
if ((selector & 0x0004) != 0) {
buf.skipBytes(4); // snapshot time
}
if ((selector & 0x0008) != 0) {
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.setLatitude(buf.readInt() / 1000000.0);
position.setLongitude(buf.readInt() / 1000000.0);
position.set(Event.KEY_SATELLITES, buf.readUnsignedByte());
}
if ((selector & 0x0010) != 0) {
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte()));
buf.readUnsignedByte(); // maximum speed
position.setCourse(buf.readUnsignedByte() * 2.0);
}
if ((selector & 0x0040) != 0) {
position.set(Event.KEY_INPUT, buf.readUnsignedByte());
}
if ((selector & 0x0020) != 0) {
position.set(Event.PREFIX_ADC + 1, buf.readUnsignedShort());
position.set(Event.PREFIX_ADC + 2, buf.readUnsignedShort());
position.set(Event.PREFIX_ADC + 3, buf.readUnsignedShort());
position.set(Event.PREFIX_ADC + 4, buf.readUnsignedShort());
}
if ((selector & 0x8000) != 0) {
position.set(Event.KEY_POWER, buf.readUnsignedShort() / 1000.0);
position.set(Event.KEY_BATTERY, buf.readUnsignedShort());
}
// Pulse rate 1
if ((selector & 0x10000) != 0) {
buf.readUnsignedShort();
buf.readUnsignedInt();
}
// Pulse rate 2
if ((selector & 0x20000) != 0) {
buf.readUnsignedShort();
buf.readUnsignedInt();
}
if ((selector & 0x0080) != 0) {
position.set("trip1", buf.readUnsignedInt());
}
if ((selector & 0x0100) != 0) {
position.set("trip2", buf.readUnsignedInt());
}
if ((selector & 0x0040) != 0) {
position.set(Event.KEY_OUTPUT, buf.readUnsignedByte());
}
if ((selector & 0x0200) != 0) {
buf.skipBytes(6); // button
}
if ((selector & 0x0400) != 0) {
buf.readUnsignedByte(); // Keypad
}
if ((selector & 0x0800) != 0) {
position.setAltitude(buf.readShort());
}
if ((selector & 0x2000) != 0) {
buf.readUnsignedShort(); // snapshot counter
}
if ((selector & 0x4000) != 0) {
buf.skipBytes(8); // state flags
}
if ((selector & 0x80000) != 0) {
buf.skipBytes(11); // cell info
}
if ((selector & 0x1000) != 0) {
decodeEventData(event, buf);
}
if (Context.getConfig().getBoolean(getProtocolName() + ".can")
&& buf.readable() && (selector & 0x1000) != 0 && event == EVENT_DATA) {
decodeCanData(buf, position);
}
return position;
}
}
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