diff options
Diffstat (limited to 'src/main/java/org/traccar/protocol/SkypatrolProtocolDecoder.java')
| -rw-r--r-- | src/main/java/org/traccar/protocol/SkypatrolProtocolDecoder.java | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/SkypatrolProtocolDecoder.java b/src/main/java/org/traccar/protocol/SkypatrolProtocolDecoder.java new file mode 100644 index 000000000..3c7ca6dc5 --- /dev/null +++ b/src/main/java/org/traccar/protocol/SkypatrolProtocolDecoder.java @@ -0,0 +1,193 @@ +/* + * Copyright 2012 - 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.channel.Channel; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; +import org.traccar.BaseProtocolDecoder; +import org.traccar.Context; +import org.traccar.DeviceSession; +import org.traccar.Protocol; +import org.traccar.helper.BitUtil; +import org.traccar.helper.DateBuilder; +import org.traccar.model.Position; + +import java.net.SocketAddress; +import java.nio.charset.StandardCharsets; + +public class SkypatrolProtocolDecoder extends BaseProtocolDecoder { + + private static final Logger LOGGER = LoggerFactory.getLogger(SkypatrolProtocolDecoder.class); + + private final long defaultMask; + + public SkypatrolProtocolDecoder(Protocol protocol) { + super(protocol); + defaultMask = Context.getConfig().getInteger(getProtocolName() + ".mask"); + } + + private static double convertCoordinate(long coordinate) { + int sign = 1; + if (coordinate > 0x7fffffffL) { + sign = -1; + coordinate = 0xffffffffL - coordinate; + } + + long degrees = coordinate / 1000000; + double minutes = (coordinate % 1000000) / 10000.0; + + return sign * (degrees + minutes / 60); + } + + @Override + protected Object decode( + Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { + + ByteBuf buf = (ByteBuf) msg; + + int apiNumber = buf.readUnsignedShort(); + int commandType = buf.readUnsignedByte(); + int messageType = BitUtil.from(buf.readUnsignedByte(), 4); + long mask = defaultMask; + if (buf.readUnsignedByte() == 4) { + mask = buf.readUnsignedInt(); + } + + // Binary position report + if (apiNumber == 5 && commandType == 2 && messageType == 1 && BitUtil.check(mask, 0)) { + + Position position = new Position(getProtocolName()); + + if (BitUtil.check(mask, 1)) { + position.set(Position.KEY_STATUS, buf.readUnsignedInt()); + } + + String id; + if (BitUtil.check(mask, 23)) { + id = buf.toString(buf.readerIndex(), 8, StandardCharsets.US_ASCII).trim(); + buf.skipBytes(8); + } else if (BitUtil.check(mask, 2)) { + id = buf.toString(buf.readerIndex(), 22, StandardCharsets.US_ASCII).trim(); + buf.skipBytes(22); + } else { + LOGGER.warn("No device id field"); + return null; + } + DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, id); + if (deviceSession == null) { + return null; + } + position.setDeviceId(deviceSession.getDeviceId()); + + if (BitUtil.check(mask, 3)) { + position.set(Position.PREFIX_IO + 1, buf.readUnsignedShort()); + } + + if (BitUtil.check(mask, 4)) { + position.set(Position.PREFIX_ADC + 1, buf.readUnsignedShort()); + } + + if (BitUtil.check(mask, 5)) { + position.set(Position.PREFIX_ADC + 2, buf.readUnsignedShort()); + } + + if (BitUtil.check(mask, 7)) { + buf.readUnsignedByte(); // function category + } + + DateBuilder dateBuilder = new DateBuilder(); + + if (BitUtil.check(mask, 8)) { + dateBuilder.setDateReverse( + buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()); + } + + if (BitUtil.check(mask, 9)) { + position.setValid(buf.readUnsignedByte() == 1); // gps status + } + + if (BitUtil.check(mask, 10)) { + position.setLatitude(convertCoordinate(buf.readUnsignedInt())); + } + + if (BitUtil.check(mask, 11)) { + position.setLongitude(convertCoordinate(buf.readUnsignedInt())); + } + + if (BitUtil.check(mask, 12)) { + position.setSpeed(buf.readUnsignedShort() / 10.0); + } + + if (BitUtil.check(mask, 13)) { + position.setCourse(buf.readUnsignedShort() / 10.0); + } + + if (BitUtil.check(mask, 14)) { + dateBuilder.setTime( + buf.readUnsignedByte(), buf.readUnsignedByte(), buf.readUnsignedByte()); + } + + position.setTime(dateBuilder.getDate()); + + if (BitUtil.check(mask, 15)) { + position.setAltitude(buf.readMedium()); + } + + if (BitUtil.check(mask, 16)) { + position.set(Position.KEY_SATELLITES, buf.readUnsignedByte()); + } + + if (BitUtil.check(mask, 17)) { + position.set(Position.KEY_BATTERY, buf.readUnsignedShort()); + } + + if (BitUtil.check(mask, 20)) { + position.set(Position.KEY_ODOMETER_TRIP, buf.readUnsignedInt()); + } + + if (BitUtil.check(mask, 21)) { + position.set(Position.KEY_ODOMETER, buf.readUnsignedInt()); + } + + if (BitUtil.check(mask, 22)) { + buf.skipBytes(6); // time of message generation + } + + if (BitUtil.check(mask, 24)) { + position.set(Position.KEY_POWER, buf.readUnsignedShort() * 0.001); + } + + if (BitUtil.check(mask, 25)) { + buf.skipBytes(18); // gps overspeed + } + + if (BitUtil.check(mask, 26)) { + buf.skipBytes(54); // cell information + } + + if (BitUtil.check(mask, 28)) { + position.set(Position.KEY_INDEX, buf.readUnsignedShort()); + } + + return position; + } + + return null; + } + +} |