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Diffstat (limited to 'src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java116
1 files changed, 116 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java b/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java
new file mode 100644
index 000000000..7d237e705
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/OmnicommProtocolDecoder.java
@@ -0,0 +1,116 @@
+/*
+ * 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 com.google.protobuf.InvalidProtocolBufferException;
+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.OmnicommMessageOuterClass;
+
+import java.net.SocketAddress;
+import java.util.Date;
+import java.util.LinkedList;
+import java.util.List;
+
+public class OmnicommProtocolDecoder extends BaseProtocolDecoder {
+
+ public OmnicommProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_IDENTIFICATION = 0x80;
+ public static final int MSG_CONTAINER_IM = 0x86;
+
+ private OmnicommMessageOuterClass.OmnicommMessage parseProto(
+ ByteBuf buf, int length) throws InvalidProtocolBufferException {
+
+ final byte[] array;
+ final int offset;
+ if (buf.hasArray()) {
+ array = buf.array();
+ offset = buf.arrayOffset() + buf.readerIndex();
+ } else {
+ array = ByteBufUtil.getBytes(buf, buf.readerIndex(), length, false);
+ offset = 0;
+ }
+ buf.skipBytes(length);
+
+ return OmnicommMessageOuterClass.OmnicommMessage
+ .getDefaultInstance().getParserForType().parseFrom(array, offset, length);
+ }
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ buf.readUnsignedByte(); // prefix
+ int type = buf.readUnsignedByte();
+ buf.readUnsignedShortLE(); // length
+
+ if (type == MSG_IDENTIFICATION) {
+
+ getDeviceSession(channel, remoteAddress, String.valueOf(buf.readUnsignedIntLE()));
+
+ } else if (type == MSG_CONTAINER_IM) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ buf.readUnsignedIntLE(); // record number
+ buf.readUnsignedIntLE(); // time
+ buf.readUnsignedByte(); // priority
+
+ List<Position> positions = new LinkedList<>();
+
+ while (buf.readableBytes() > 2) {
+
+ OmnicommMessageOuterClass.OmnicommMessage message = parseProto(buf, buf.readUnsignedShortLE());
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ if (message.hasNAV()) {
+ OmnicommMessageOuterClass.OmnicommMessage.NAV nav = message.getNAV();
+ position.setValid(true);
+ position.setTime(new Date((nav.getGPSTime() + 1230768000) * 1000L)); // from 2009-01-01 12:00
+ position.setLatitude(nav.getLAT() * 0.0000001);
+ position.setLongitude(nav.getLON() * 0.0000001);
+ position.setSpeed(UnitsConverter.knotsFromKph(nav.getGPSVel() * 0.1));
+ position.setCourse(nav.getGPSDir());
+ position.setAltitude(nav.getGPSAlt() * 0.1);
+ position.set(Position.KEY_SATELLITES, nav.getGPSNSat());
+ }
+
+ positions.add(position);
+ }
+
+ return positions;
+ }
+
+ return null;
+ }
+
+}