1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/*
* Copyright 2012 - 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.buffer.ChannelBuffer;
import org.jboss.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
import org.traccar.DeviceSession;
import org.traccar.helper.BitUtil;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
import java.util.Date;
public class AdmProtocolDecoder extends BaseProtocolDecoder {
public AdmProtocolDecoder(AdmProtocol protocol) {
super(protocol);
}
public static final int CMD_RESPONSE_SIZE = 0x84;
public static final int MSG_IMEI = 0x03;
public static final int MSG_PHOTO = 0x0A;
public static final int MSG_ADM5 = 0x01;
private Position decodeData(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf, int type) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
if (BitUtil.to(type, 2) == 0) {
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
position.set(Position.KEY_VERSION_FW, buf.readUnsignedByte());
position.set(Position.KEY_INDEX, buf.readUnsignedShort());
int status = buf.readUnsignedShort();
position.set(Position.KEY_STATUS, status);
position.setValid(!BitUtil.check(status, 5));
position.setLatitude(buf.readFloat());
position.setLongitude(buf.readFloat());
position.setCourse(buf.readUnsignedShort() * 0.1);
position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort() * 0.1));
position.set(Position.KEY_ACCELERATION, buf.readUnsignedByte() * 0.1);
position.setAltitude(buf.readUnsignedShort());
position.set(Position.KEY_HDOP, buf.readUnsignedByte() * 0.1);
position.set(Position.KEY_SATELLITES, buf.readUnsignedByte() & 0x0f);
position.setTime(new Date(buf.readUnsignedInt() * 1000));
position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001);
position.set(Position.KEY_BATTERY, buf.readUnsignedShort() * 0.001);
if (BitUtil.check(type, 2)) {
buf.readUnsignedByte(); // vib
buf.readUnsignedByte(); // vib_count
int out = buf.readUnsignedByte();
for (int i = 0; i <= 3; i++) {
position.set(Position.PREFIX_OUT + (i + 1), BitUtil.check(out, i) ? 1 : 0);
}
buf.readUnsignedByte(); // in_alarm
}
if (BitUtil.check(type, 3)) {
for (int i = 1; i <= 6; i++) {
position.set(Position.PREFIX_ADC + i, buf.readUnsignedShort() * 0.001);
}
}
if (BitUtil.check(type, 4)) {
for (int i = 1; i <= 2; i++) {
position.set(Position.PREFIX_COUNT + i, buf.readUnsignedInt());
}
}
if (BitUtil.check(type, 5)) {
for (int i = 1; i <= 3; i++) {
buf.readUnsignedShort(); // fuel level
}
for (int i = 1; i <= 3; i++) {
position.set(Position.PREFIX_TEMP + i, buf.readUnsignedByte());
}
}
if (BitUtil.check(type, 6)) {
buf.skipBytes(buf.getUnsignedByte(buf.readerIndex()));
}
if (BitUtil.check(type, 7)) {
position.set(Position.KEY_ODOMETER, buf.readUnsignedInt());
}
return position;
}
return null;
}
private Position parseCommandResponse(Channel channel, SocketAddress remoteAddress, ChannelBuffer buf) {
DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
if (deviceSession == null) {
return null;
}
Position position = new Position(getProtocolName());
position.setDeviceId(deviceSession.getDeviceId());
getLastLocation(position, null);
int responseTextLength = buf.bytesBefore((byte) 0);
if (responseTextLength < 0) {
responseTextLength = CMD_RESPONSE_SIZE - 3;
}
position.set(Position.KEY_RESULT, buf.readBytes(responseTextLength).toString(StandardCharsets.UTF_8));
return position;
}
@Override
protected Object decode(Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
ChannelBuffer buf = (ChannelBuffer) msg;
buf.readUnsignedShort(); // device id
int size = buf.readUnsignedByte();
if (size != CMD_RESPONSE_SIZE) {
int type = buf.readUnsignedByte();
if (type == MSG_IMEI) {
getDeviceSession(channel, remoteAddress, buf.readBytes(15).toString(StandardCharsets.UTF_8));
} else {
return decodeData(channel, remoteAddress, buf, type);
}
} else {
return parseCommandResponse(channel, remoteAddress, buf);
}
return null;
}
}
|
