From 26438c9eec2a215687595fcfa6454c92c913a030 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Fri, 9 Jun 2017 11:05:06 -0700 Subject: Implement VT200/VT400 protocol --- src/org/traccar/protocol/Vt200Protocol.java | 43 +++++++++ src/org/traccar/protocol/Vt200ProtocolDecoder.java | 105 +++++++++++++++++++++ 2 files changed, 148 insertions(+) create mode 100644 src/org/traccar/protocol/Vt200Protocol.java create mode 100644 src/org/traccar/protocol/Vt200ProtocolDecoder.java (limited to 'src/org/traccar') diff --git a/src/org/traccar/protocol/Vt200Protocol.java b/src/org/traccar/protocol/Vt200Protocol.java new file mode 100644 index 000000000..4a8587b21 --- /dev/null +++ b/src/org/traccar/protocol/Vt200Protocol.java @@ -0,0 +1,43 @@ +/* + * Copyright 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.bootstrap.ServerBootstrap; +import org.jboss.netty.channel.ChannelPipeline; +import org.jboss.netty.handler.codec.frame.LengthFieldBasedFrameDecoder; +import org.traccar.BaseProtocol; +import org.traccar.TrackerServer; + +import java.util.List; + +public class Vt200Protocol extends BaseProtocol { + + public Vt200Protocol() { + super("vt200"); + } + + @Override + public void initTrackerServers(List serverList) { + serverList.add(new TrackerServer(new ServerBootstrap(), getName()) { + @Override + protected void addSpecificHandlers(ChannelPipeline pipeline) { + pipeline.addLast("frameDecoder", new LengthFieldBasedFrameDecoder(1024, 1 + 6 + 2, 2, 2, 0)); + pipeline.addLast("objectDecoder", new Vt200ProtocolDecoder(Vt200Protocol.this)); + } + }); + } + +} diff --git a/src/org/traccar/protocol/Vt200ProtocolDecoder.java b/src/org/traccar/protocol/Vt200ProtocolDecoder.java new file mode 100644 index 000000000..b9af11b43 --- /dev/null +++ b/src/org/traccar/protocol/Vt200ProtocolDecoder.java @@ -0,0 +1,105 @@ +/* + * Copyright 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.buffer.ChannelBuffers; +import org.jboss.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.helper.BcdUtil; +import org.traccar.helper.BitUtil; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; + +public class Vt200ProtocolDecoder extends BaseProtocolDecoder { + + public Vt200ProtocolDecoder(Vt200Protocol protocol) { + super(protocol); + } + + private static double decodeCoordinate(int value) { + int degrees = value / 1000000; + int minutes = value % 1000000; + return degrees + minutes * 0.0001 / 60; + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ChannelBuffer buf = (ChannelBuffer) msg; + + buf.skipBytes(1); // header + + String id = ChannelBuffers.hexDump(buf.readBytes(6)); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); + if (deviceSession == null) { + return null; + } + + int type = buf.readUnsignedShort(); + buf.readUnsignedShort(); // length + + if (type == 0x2084) { + + Position position = new Position(); + position.setProtocol(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + buf.readUnsignedByte(); // data type + buf.readUnsignedShort(); // trip id + + DateBuilder dateBuilder = new DateBuilder(); + dateBuilder.setDateReverse( + BcdUtil.readInteger(buf, 2), BcdUtil.readInteger(buf, 2), BcdUtil.readInteger(buf, 2)); + dateBuilder.setTime( + BcdUtil.readInteger(buf, 2), BcdUtil.readInteger(buf, 2), BcdUtil.readInteger(buf, 2)); + position.setTime(dateBuilder.getDate()); + + position.setLatitude(decodeCoordinate(BcdUtil.readInteger(buf, 8))); + position.setLongitude(decodeCoordinate(BcdUtil.readInteger(buf, 9))); + + int flags = buf.readUnsignedByte(); + position.setValid(BitUtil.check(flags, 0)); + if (!BitUtil.check(flags, 1)) { + position.setLatitude(-position.getLatitude()); + } + if (!BitUtil.check(flags, 1)) { + position.setLongitude(-position.getLongitude()); + } + + position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedByte())); + position.setCourse(buf.readUnsignedByte() * 2); + + position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); + position.set(Position.KEY_RSSI, buf.readUnsignedByte()); + position.set(Position.KEY_ODOMETER, buf.readUnsignedInt() * 1000); + position.set(Position.KEY_STATUS, buf.readUnsignedInt()); + + // additional data + + return position; + + } + + return null; + } + +} -- cgit v1.2.3