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Diffstat (limited to 'src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java95
1 files changed, 95 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java b/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java
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+++ b/src/main/java/org/traccar/protocol/DolphinProtocolDecoder.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright 2020 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.ByteBufUtil;
+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 org.traccar.protobuf.dolphin.Messages.DolphinMessages;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class DolphinProtocolDecoder extends BaseProtocolDecoder {
+
+ public DolphinProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.readUnsignedShort(); // header
+ buf.readUnsignedIntLE(); // index
+ buf.readUnsignedShort(); // version
+ buf.readUnsignedShort(); // flags
+ int type = buf.readUnsignedShortLE();
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(buf.readLongLE()));
+ if (deviceSession == null) {
+ return null;
+ }
+
+ int length = (int) buf.readUnsignedIntLE();
+ buf.readUnsignedInt(); // reserved
+
+ if (type == DolphinMessages.MessageType.DataPack_Request.getNumber()) {
+
+ DolphinMessages.DataPackRequest message = DolphinMessages.DataPackRequest.parseFrom(
+ ByteBufUtil.getBytes(buf, buf.readerIndex(), length, false));
+
+ List<Position> positions = new LinkedList<>();
+
+ for (int i = 0; i < message.getPointsCount(); i++) {
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ DolphinMessages.DataPoint point = message.getPoints(i);
+
+ position.setValid(true);
+ position.setTime(new Date(point.getTimestamp() * 1000L));
+ position.setLatitude(point.getLatitude());
+ position.setLongitude(point.getLongitude());
+ position.setAltitude(point.getAltitude());
+ position.setSpeed(UnitsConverter.knotsFromKph(point.getSpeed()));
+ position.setCourse(point.getBearing());
+
+ position.set(Position.KEY_SATELLITES, point.getSatellites());
+ position.set(Position.KEY_HDOP, point.getHDOP());
+
+ positions.add(position);
+
+ }
+
+ return positions;
+
+ }
+
+ return null;
+ }
+
+}