1 files changed, 157 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/AlematicsProtocolDecoder.java b/src/main/java/org/traccar/protocol/AlematicsProtocolDecoder.java
new file mode 100644
index 000000000..25ccf6856
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/AlematicsProtocolDecoder.java
@@ -0,0 +1,157 @@
+/*
+ * 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+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(Protocol protocol) {
+        super(protocol);
+    }
+
+    private static final Pattern PATTERN = new PatternBuilder()
+            .text("$T,")
+            .number("(d+),")                     // type
+            .number("(d+),")                     // index
+            .number("(d+),")                     // id
+            .number("(dddd)(dd)(dd)")            // gps date
+            .number("(dd)(dd)(dd),")             // gps time
+            .number("(dddd)(dd)(dd)")            // device date
+            .number("(dd)(dd)(dd),")             // device time
+            .number("(-?d+.d+),")                // latitude
+            .number("(-?d+.d+),")                // longitude
+            .number("(d+),")                     // speed
+            .number("(d+),")                     // course
+            .number("(-?d+),")                   // altitude
+            .number("(d+.d),")                   // hdop
+            .number("(d+),")                     // satellites
+            .number("(d+),")                     // input
+            .number("(d+),")                     // output
+            .number("(d+.d+),")                  // adc
+            .number("(d+.d+),")                  // power
+            .number("(d+),")                     // odometer
+            .groupBegin()
+            .text("0,$S,")
+            .expression("(.*)")                  // text message
+            .or()
+            .number("(d+),")                     // extra mask
+            .expression("(.*)")                  // extra data
+            .or()
+            .any()
+            .groupEnd()
+            .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(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());
+
+        if (parser.hasNext()) {
+            position.set("text", parser.next());
+        } else if (parser.hasNext()) {
+            decodeExtras(position, parser);
+        }
+
+        return position;
+    }
+
+}