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authorAnton Tananaev <anton.tananaev@gmail.com>2019-04-21 16:12:07 -0700
committerAnton Tananaev <anton.tananaev@gmail.com>2019-04-21 16:12:07 -0700
commit88bf0a165493bb7e554e7fa12d4520a01ba3ca87 (patch)
treeca14f1930bb6e18f45d33dd5c95ec77fef913c2a /src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java
parent2a753836f582912a47e3387d1ed203c8a312da49 (diff)
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Implement Pebbell protocol
Diffstat (limited to 'src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java93
1 files changed, 93 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java b/src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/PebbellProtocolDecoder.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2019 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.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+
+public class PebbellProtocolDecoder extends BaseProtocolDecoder {
+
+ public PebbellProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_DATA = 0x01;
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.readUnsignedByte(); // header
+ buf.readUnsignedByte(); // properties
+ buf.readUnsignedShortLE(); // length
+ buf.readUnsignedShortLE(); // checksum
+ buf.readUnsignedShortLE(); // index
+ int type = buf.readUnsignedByte();
+
+ if (type == MSG_DATA) {
+
+ Position position = new Position(getProtocolName());
+
+ while (buf.isReadable()) {
+ int endIndex = buf.readUnsignedByte() + buf.readerIndex();
+ int key = buf.readUnsignedByte();
+ switch (key) {
+ case 0x01:
+ DeviceSession deviceSession = getDeviceSession(
+ channel, remoteAddress, buf.readBytes(15).toString(StandardCharsets.US_ASCII));
+ if (deviceSession == null) {
+ return null;
+ }
+ position.setDeviceId(deviceSession.getDeviceId());
+ break;
+ case 0x20:
+ position.setLatitude(buf.readIntLE() * 0.0000001);
+ position.setLongitude(buf.readIntLE() * 0.0000001);
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
+ position.setCourse(buf.readUnsignedShortLE());
+ position.setAltitude(buf.readShortLE());
+ position.setValid(buf.readUnsignedShortLE() > 0);
+ position.set(Position.KEY_ODOMETER, buf.readUnsignedIntLE());
+ position.set(Position.KEY_SATELLITES, buf.readUnsignedByte());
+ break;
+ default:
+ break;
+ }
+ buf.readerIndex(endIndex);
+ }
+
+ if (!position.getAttributes().containsKey(Position.KEY_SATELLITES)) {
+ getLastLocation(position, null);
+ }
+
+ return position.getDeviceId() > 0 ? position : null;
+
+ }
+
+ return null;
+ }
+
+}