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author | Anton Tananaev <anton.tananaev@gmail.com> | 2019-03-31 22:35:39 -0700 |
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committer | Anton Tananaev <anton.tananaev@gmail.com> | 2019-03-31 22:35:39 -0700 |
commit | 59416923dcb3a756eaf532cc4259f2f6625c0762 (patch) | |
tree | 9082dae6616deac8fda432b7bfd80e4a52b6d9dc /src/org/traccar/protocol/AisProtocolDecoder.java | |
parent | 79a129dd6327d932133d6b9a50190d3f4927bff9 (diff) | |
download | traccar-server-59416923dcb3a756eaf532cc4259f2f6625c0762.tar.gz traccar-server-59416923dcb3a756eaf532cc4259f2f6625c0762.tar.bz2 traccar-server-59416923dcb3a756eaf532cc4259f2f6625c0762.zip |
Convert project to gradle
Diffstat (limited to 'src/org/traccar/protocol/AisProtocolDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/AisProtocolDecoder.java | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/src/org/traccar/protocol/AisProtocolDecoder.java b/src/org/traccar/protocol/AisProtocolDecoder.java deleted file mode 100644 index 8970f3d4a..000000000 --- a/src/org/traccar/protocol/AisProtocolDecoder.java +++ /dev/null @@ -1,140 +0,0 @@ -/* - * Copyright 2016 - 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.channel.Channel; -import org.traccar.BaseProtocolDecoder; -import org.traccar.DeviceSession; -import org.traccar.Protocol; -import org.traccar.helper.BitBuffer; -import org.traccar.helper.Parser; -import org.traccar.helper.PatternBuilder; -import org.traccar.model.Position; - -import java.net.SocketAddress; -import java.nio.charset.StandardCharsets; -import java.util.ArrayList; -import java.util.Date; -import java.util.HashMap; -import java.util.List; -import java.util.Map; -import java.util.regex.Pattern; - -public class AisProtocolDecoder extends BaseProtocolDecoder { - - public AisProtocolDecoder(Protocol protocol) { - super(protocol); - } - - private static final Pattern PATTERN = new PatternBuilder() - .text("!AIVDM,") - .number("(d+),") // count - .number("(d+),") // index - .number("(d+)?,") // id - .expression(".,") // radio channel - .expression("([^,]+),") // payload - .any() - .compile(); - - private Position decodePayload(Channel channel, SocketAddress remoteAddress, BitBuffer buf) { - - int type = buf.readUnsigned(6); - if (type == 1 || type == 2 || type == 3 || type == 18) { - - buf.readUnsigned(2); - int mmsi = buf.readUnsigned(30); - - DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, String.valueOf(mmsi)); - if (deviceSession == null) { - return null; - } - - Position position = new Position(getProtocolName()); - position.setDeviceId(deviceSession.getDeviceId()); - - position.setTime(new Date()); - - if (type == 18) { - buf.readUnsigned(8); // reserved - } else { - position.set(Position.KEY_STATUS, buf.readUnsigned(4)); - position.set("turn", buf.readSigned(8)); - } - - position.setSpeed(buf.readUnsigned(10) * 0.1); - position.setValid(buf.readUnsigned(1) != 0); - position.setLongitude(buf.readSigned(28) * 0.0001 / 60.0); - position.setLatitude(buf.readSigned(27) * 0.0001 / 60.0); - position.setCourse(buf.readUnsigned(12) * 0.1); - - position.set("heading", buf.readUnsigned(9)); - - return position; - - } - - return null; - } - - @Override - protected Object decode( - Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { - - String[] sentences = ((String) msg).split("\\r\\n"); - - List<Position> positions = new ArrayList<>(); - Map<Integer, BitBuffer> buffers = new HashMap<>(); - - for (String sentence : sentences) { - if (!sentence.isEmpty()) { - Parser parser = new Parser(PATTERN, sentence); - if (parser.matches()) { - - int count = parser.nextInt(0); - int index = parser.nextInt(0); - int id = parser.nextInt(0); - - Position position = null; - - if (count == 1) { - BitBuffer bits = new BitBuffer(); - bits.writeEncoded(parser.next().getBytes(StandardCharsets.US_ASCII)); - position = decodePayload(channel, remoteAddress, bits); - } else { - BitBuffer bits = buffers.get(id); - if (bits == null) { - bits = new BitBuffer(); - buffers.put(id, bits); - } - bits.writeEncoded(parser.next().getBytes(StandardCharsets.US_ASCII)); - if (count == index) { - position = decodePayload(channel, remoteAddress, bits); - buffers.remove(id); - } - } - - if (position != null) { - positions.add(position); - } - - } - } - } - - return positions; - } - -} |