diff options
Diffstat (limited to 'src/org/traccar/protocol/T800xProtocolDecoder.java')
| -rw-r--r-- | src/org/traccar/protocol/T800xProtocolDecoder.java | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/T800xProtocolDecoder.java b/src/org/traccar/protocol/T800xProtocolDecoder.java new file mode 100644 index 000000000..ab62110ba --- /dev/null +++ b/src/org/traccar/protocol/T800xProtocolDecoder.java @@ -0,0 +1,162 @@ +/* + * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com) + * + * 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.helper.BitUtil; +import org.traccar.helper.ChannelBufferTools; +import org.traccar.helper.DateBuilder; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Event; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.ByteOrder; + +public class T800xProtocolDecoder extends BaseProtocolDecoder { + + public T800xProtocolDecoder(T800xProtocol protocol) { + super(protocol); + } + + private static final int MSG_LOGIN = 0x01; + private static final int MSG_GPS = 0x02; + private static final int MSG_HEARTBEAT = 0x03; + private static final int MSG_ALARM = 0x04; + + private static float readSwappedFloat(ChannelBuffer buf) { + byte[] bytes = new byte[4]; + buf.readBytes(bytes); + return ChannelBuffers.wrappedBuffer(ByteOrder.LITTLE_ENDIAN, bytes).readFloat(); + } + + private void sendResponse(Channel channel, int type, ChannelBuffer imei) { + if (channel != null) { + ChannelBuffer response = ChannelBuffers.directBuffer(15); + response.writeByte(0x23); + response.writeByte(0x23); // header + response.writeByte(type); + response.writeShort(response.capacity()); // length + response.writeShort(0x0001); // index + response.writeBytes(imei); + channel.write(response); + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ChannelBuffer buf = (ChannelBuffer) msg; + + buf.skipBytes(2); + int type = buf.readUnsignedByte(); + buf.readUnsignedShort(); // length + int index = buf.readUnsignedShort(); + ChannelBuffer imei = buf.readBytes(8); + + if (!identify(ChannelBuffers.hexDump(imei).substring(1), channel, remoteAddress)) { + return null; + } + + if (type == MSG_LOGIN || type == MSG_ALARM || type == MSG_HEARTBEAT) { + sendResponse(channel, type, imei); + } + + if (type == MSG_GPS || type == MSG_ALARM) { + + Position position = new Position(); + position.setProtocol(getProtocolName()); + position.setDeviceId(getDeviceId()); + + position.set(Event.KEY_INDEX, index); + + buf.readUnsignedShort(); // acc on interval + buf.readUnsignedShort(); // acc off interval + buf.readUnsignedByte(); // angle compensation + buf.readUnsignedShort(); // distance compensation + buf.readUnsignedShort(); // speed alarm + + int locationStatus = buf.readUnsignedByte(); + + buf.readUnsignedByte(); // gsensor manager status + buf.readUnsignedByte(); // other flags + buf.readUnsignedByte(); // heartbeat + buf.readUnsignedByte(); // relay status + buf.readUnsignedShort(); // drag alarm setting + + int io = buf.readUnsignedShort(); + position.set(Event.KEY_IGNITION, BitUtil.check(io, 14)); + position.set("ac", BitUtil.check(io, 13)); + + position.set(Event.PREFIX_ADC + 1, buf.readUnsignedShort()); + position.set(Event.PREFIX_ADC + 2, buf.readUnsignedShort()); + + position.set(Event.KEY_ALARM, buf.readUnsignedByte()); + + buf.readUnsignedByte(); // reserved + + position.set(Event.KEY_ODOMETER, buf.readUnsignedInt()); + + int battery = ChannelBufferTools.readHexInteger(buf, 2); + if (battery == 0) { + battery = 100; + } + position.set(Event.KEY_BATTERY, battery); + + DateBuilder dateBuilder = new DateBuilder() + .setYear(ChannelBufferTools.readHexInteger(buf, 2)) + .setMonth(ChannelBufferTools.readHexInteger(buf, 2)) + .setDay(ChannelBufferTools.readHexInteger(buf, 2)) + .setHour(ChannelBufferTools.readHexInteger(buf, 2)) + .setMinute(ChannelBufferTools.readHexInteger(buf, 2)) + .setSecond(ChannelBufferTools.readHexInteger(buf, 2)); + + if (BitUtil.check(locationStatus, 6)) { + + position.setValid(!BitUtil.check(locationStatus, 7)); + position.setTime(dateBuilder.getDate()); + position.setAltitude(readSwappedFloat(buf)); + position.setLongitude(readSwappedFloat(buf)); + position.setLatitude(readSwappedFloat(buf)); + position.setSpeed(UnitsConverter.knotsFromKph( + ChannelBufferTools.readHexInteger(buf, 4) * 0.1)); + position.setCourse(buf.readUnsignedShort()); + + } else { + + getLastLocation(position, dateBuilder.getDate()); + + position.set(Event.KEY_MCC, buf.readUnsignedShort()); + position.set(Event.KEY_MNC, buf.readUnsignedShort()); + position.set(Event.KEY_LAC, buf.readUnsignedShort()); + position.set(Event.KEY_CELL, buf.readUnsignedShort()); + + // two more cell towers + + } + + return position; + + } + + return null; + } + +} |