diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/TytanProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/TytanProtocolDecoder.java | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/TytanProtocolDecoder.java b/src/main/java/org/traccar/protocol/TytanProtocolDecoder.java new file mode 100644 index 000000000..93d3a63d2 --- /dev/null +++ b/src/main/java/org/traccar/protocol/TytanProtocolDecoder.java @@ -0,0 +1,192 @@ +/* + * Copyright 2015 - 2018 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.buffer.Unpooled; +import io.netty.channel.Channel; +import org.traccar.BaseProtocolDecoder; +import org.traccar.DeviceSession; +import org.traccar.NetworkMessage; +import org.traccar.Protocol; +import org.traccar.helper.BitUtil; +import org.traccar.helper.UnitsConverter; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; +import java.util.Date; +import java.util.LinkedList; +import java.util.List; + +public class TytanProtocolDecoder extends BaseProtocolDecoder { + + public TytanProtocolDecoder(Protocol protocol) { + super(protocol); + } + + private void decodeExtraData(Position position, ByteBuf buf, int end) { + while (buf.readerIndex() < end) { + + int type = buf.readUnsignedByte(); + int length = buf.readUnsignedByte(); + if (length == 255) { + length += buf.readUnsignedByte(); + } + + int n; + + switch (type) { + case 2: + position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedMedium()); + break; + case 5: + position.set(Position.KEY_INPUT, buf.readUnsignedByte()); + break; + case 6: + n = buf.readUnsignedByte() >> 4; + if (n < 2) { + position.set(Position.PREFIX_ADC + n, buf.readFloat()); + } else { + position.set("di" + (n - 2), buf.readFloat()); + } + break; + case 7: + int alarm = buf.readUnsignedByte(); + buf.readUnsignedByte(); + if (BitUtil.check(alarm, 5)) { + position.set(Position.KEY_ALARM, Position.ALARM_GENERAL); + } + break; + case 8: + position.set("antihijack", buf.readUnsignedByte()); + break; + case 9: + position.set("unauthorized", ByteBufUtil.hexDump(buf.readSlice(8))); + break; + case 10: + position.set("authorized", ByteBufUtil.hexDump(buf.readSlice(8))); + break; + case 24: + for (int i = 0; i < length / 2; i++) { + position.set(Position.PREFIX_TEMP + buf.readUnsignedByte(), buf.readByte()); + } + break; + case 28: + position.set(Position.KEY_AXLE_WEIGHT, buf.readUnsignedShort()); + buf.readUnsignedByte(); + break; + case 90: + position.set(Position.KEY_POWER, buf.readFloat()); + break; + case 101: + position.set(Position.KEY_OBD_SPEED, buf.readUnsignedByte()); + break; + case 102: + position.set(Position.KEY_RPM, buf.readUnsignedByte() * 50); + break; + case 107: + int fuel = buf.readUnsignedShort(); + int fuelFormat = fuel >> 14; + if (fuelFormat == 1) { + position.set("fuelValue", (fuel & 0x3fff) * 0.4 + "%"); + } else if (fuelFormat == 2) { + position.set("fuelValue", (fuel & 0x3fff) * 0.5 + " l"); + } else if (fuelFormat == 3) { + position.set("fuelValue", (fuel & 0x3fff) * -0.5 + " l"); + } + break; + case 108: + position.set(Position.KEY_OBD_ODOMETER, buf.readUnsignedInt() * 5); + break; + case 150: + position.set(Position.KEY_DOOR, buf.readUnsignedByte()); + break; + default: + buf.skipBytes(length); + break; + } + } + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + buf.readUnsignedByte(); // protocol + buf.readUnsignedShort(); // length + int index = buf.readUnsignedByte() >> 3; + + if (channel != null) { + ByteBuf response = Unpooled.copiedBuffer("^" + index, StandardCharsets.US_ASCII); + channel.writeAndFlush(new NetworkMessage(response, remoteAddress)); + } + + String id = String.valueOf(buf.readUnsignedInt()); + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); + if (deviceSession == null) { + return null; + } + + List<Position> positions = new LinkedList<>(); + + while (buf.readableBytes() > 2) { + + Position position = new Position(getProtocolName()); + position.setDeviceId(deviceSession.getDeviceId()); + + int end = buf.readerIndex() + buf.readUnsignedByte(); + + position.setTime(new Date(buf.readUnsignedInt() * 1000)); + + int flags = buf.readUnsignedByte(); + position.set(Position.KEY_SATELLITES, BitUtil.from(flags, 2)); + position.setValid(BitUtil.to(flags, 2) > 0); + + // Latitude + double lat = buf.readUnsignedMedium(); + lat = lat * -180 / 16777216 + 90; + position.setLatitude(lat); + + // Longitude + double lon = buf.readUnsignedMedium(); + lon = lon * 360 / 16777216 - 180; + position.setLongitude(lon); + + // Status + flags = buf.readUnsignedByte(); + position.set(Position.KEY_IGNITION, BitUtil.check(flags, 0)); + position.set(Position.KEY_RSSI, BitUtil.between(flags, 2, 5)); + position.setCourse((BitUtil.from(flags, 5) * 45 + 180) % 360); + + // Speed + int speed = buf.readUnsignedByte(); + if (speed < 250) { + position.setSpeed(UnitsConverter.knotsFromKph(speed)); + } + + decodeExtraData(position, buf, end); + + positions.add(position); + } + + return positions; + } + +} |