mirror of
https://github.com/f4exb/sdrangel.git
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820 lines
26 KiB
C++
820 lines
26 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2021-2023 Jon Beniston, M7RCE <jon@beniston.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#include <QDebug>
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#include "ais.h"
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AISMessage::AISMessage(const QByteArray ba)
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{
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// All AIS messages have these 3 fields in common
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m_id = (ba[0] & 0xff) >> 2 & 0x3f;
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m_repeatIndicator = ba[0] & 0x3;
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m_mmsi = ((ba[1] & 0xff) << 22) | ((ba[2] & 0xff) << 14) | ((ba[3] & 0xff) << 6) | ((ba[4] & 0xff) >> 2);
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m_bytes = ba;
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}
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QString AISMessage::toHex()
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{
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return m_bytes.toHex();
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}
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// See: https://gpsd.gitlab.io/gpsd/AIVDM.html
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QString AISMessage::toNMEA(const QByteArray bytes)
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{
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QStringList nmeaSentences;
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// Max payload is ~61 chars -> 366 bits
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int sentences = bytes.size() / 45 + 1;
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int sentence = 1;
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int bits = 8;
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int i = 0;
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while (i < bytes.size())
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{
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QStringList nmeaSentence;
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QStringList nmea;
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QStringList payload;
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nmea.append(QString("AIVDM,%1,%2,%3,,").arg(sentences).arg(sentence).arg(sentences > 1 ? "1" : ""));
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int maxPayload = 80 - 1 - nmea[0].length() - 5;
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// Encode message data in 6-bit ASCII
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while ((payload.size() < maxPayload) && (i < bytes.size()))
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{
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int c = 0;
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for (int j = 0; j < 6; j++)
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{
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if (i < bytes.size()) {
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c = (c << 1) | ((bytes[i] >> (bits - 1)) & 0x1);
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} else {
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c = (c << 1);
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}
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bits--;
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if (bits == 0)
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{
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i++;
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bits = 8;
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}
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}
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if (c >= 40) {
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c += 56;
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} else {
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c += 48;
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}
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payload.append(QChar(c));
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}
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nmea.append(payload);
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nmea.append(QString(",%1").arg((i == bytes.size()) ? (8 - bits) : 0)); // Number of filler bits to ignore
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// Calculate checksum
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QString nmeaProtected = nmea.join("");
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int checksum = AISMessage::nmeaChecksum(nmeaProtected);
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// Construct complete sentence with leading ! and trailing checksum
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nmeaSentence.append("!");
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nmeaSentence.append(nmeaProtected);
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nmeaSentence.append(QString("*%1").arg(checksum, 2, 16, QChar('0')));
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nmeaSentences.append(nmeaSentence.join(""));
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sentence++;
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}
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return nmeaSentences.join("\r\n").append("\r\n"); // NMEA-0183 requires CR and LF
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}
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QString AISMessage::toNMEA()
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{
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return AISMessage::toNMEA(m_bytes);
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}
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qint8 AISMessage::nmeaChecksum(QString string)
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{
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qint8 checksum = 0;
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for (int i = 0; i < string.length(); i++)
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{
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qint8 c = (qint8)string[i].toLatin1();
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checksum ^= c;
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}
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return checksum;
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}
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// Type as in message 5 and 19
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QString AISMessage::typeToString(quint8 type)
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{
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if (type == 0) {
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return "N/A";
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} else if ((type >= 100) && (type < 199)) {
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return "Preserved for regional use";
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} else if (type >= 200) {
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return "Preserved for future use";
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} else if ((type >= 50) && (type <= 59)) {
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const QStringList specialCrafts = {
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"Pilot vessel",
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"Search and rescue vessel",
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"Tug",
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"Port tender",
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"Anti-pollution vessel",
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"Law enforcement vessel",
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"Spare (56)",
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"Spare (57)",
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"Medical transport",
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"Ships and aircraft of States not parties to an armed conflict"
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};
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return specialCrafts[type-50];
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} else {
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int firstDigit = type / 10;
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int secondDigit = type % 10;
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const QStringList shipType = {
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"0",
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"Reserved (1)",
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"WIG",
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"Vessel",
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"HSC",
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"5",
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"Passenger",
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"Cargo",
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"Tanker",
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"Other"
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};
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const QStringList activity = {
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"Fishing",
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"Towing",
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"Towing",
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"Dredging or underwater operations",
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"Diving operations",
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"Military operations",
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"Sailing",
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"Pleasure craft",
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"Reserved (8)",
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"Reserved (9)"
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};
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if (firstDigit == 3) {
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return shipType[firstDigit] + " - " + activity[secondDigit];
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} else {
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return shipType[firstDigit];
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}
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}
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}
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AISMessage* AISMessage::decode(const QByteArray ba)
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{
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if (ba.size() < 1) {
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return nullptr;
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}
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int id = (ba[0] >> 2) & 0x3f;
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if ((id == 1) || (id == 2) || (id == 3)) {
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return new AISPositionReport(ba);
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} else if ((id == 4) || (id == 11)) {
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return new AISBaseStationReport(ba);
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} else if (id == 5) {
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return new AISShipStaticAndVoyageData(ba);
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} else if (id == 6) {
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return new AISBinaryMessage(ba);
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} else if (id == 7) {
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return new AISBinaryAck(ba);
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} else if (id == 8) {
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return new AISBinaryBroadcast(ba);
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} else if (id == 9) {
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return new AISSARAircraftPositionReport(ba);
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} else if (id == 10) {
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return new AISUTCInquiry(ba);
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} else if (id == 12) {
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return new AISSafetyMessage(ba);
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} else if (id == 13) {
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return new AISSafetyAck(ba);
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} else if (id == 14) {
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return new AISSafetyBroadcast(ba);
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} else if (id == 15) {
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return new AISInterrogation(ba);
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} else if (id == 16) {
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return new AISAssignedModeCommand(ba);
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} else if (id == 17) {
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return new AISGNSSBroadcast(ba);
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} else if (id == 18) {
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return new AISStandardClassBPositionReport(ba);
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} else if (id == 19) {
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return new AISExtendedClassBPositionReport(ba);
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} else if (id == 20) {
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return new AISDatalinkManagement(ba);
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} else if (id == 21) {
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return new AISAidsToNavigationReport(ba);
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} else if (id == 22) {
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return new AISChannelManagement(ba);
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} else if (id == 23) {
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return new AISGroupAssignment(ba);
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} else if (id == 24) {
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return new AISStaticDataReport(ba);
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} else if (id == 25) {
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return new AISSingleSlotBinaryMessage(ba);
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} else if (id == 26) {
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return new AISMultipleSlotBinaryMessage(ba);
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} else if (id == 27) {
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return new AISLongRangePositionReport(ba);
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} else {
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return new AISUnknownMessageID(ba);
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}
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}
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// Extract 6-bit ASCII string
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QString AISMessage::getString(const QByteArray ba, int byteIdx, int bitsLeft, int chars)
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{
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QString s;
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for (int i = 0; i < chars; i++)
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{
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// Extract 6-bits
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int c = 0;
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for (int j = 0; j < 6; j++)
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{
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c = (c << 1) | ((ba[byteIdx] >> (bitsLeft - 1)) & 0x1);
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bitsLeft--;
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if (bitsLeft == 0)
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{
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byteIdx++;
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bitsLeft = 8;
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}
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}
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// Map from 6-bit to 8-bit ASCII
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if (c < 32) {
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c |= 0x40;
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}
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s.append(QChar(c));
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}
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// Remove leading/trailing spaces
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s = s.trimmed();
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// Remove @s, which indicate no character
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while (s.endsWith("@")) {
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s = s.left(s.length() - 1);
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}
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while (s.startsWith("@")) {
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s = s.mid(1);
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}
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return s;
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}
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AISPositionReport::AISPositionReport(QByteArray ba) :
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AISMessage(ba)
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{
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m_status = ((ba[4] & 0x3) << 2) | ((ba[5] >> 6) & 0x3);
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int rateOfTurn = ((ba[5] << 2) & 0xfc) | ((ba[6] >> 6) & 0x3);
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if (rateOfTurn == 127) {
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m_rateOfTurn = 720.0f;
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} else if (rateOfTurn == -127) {
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m_rateOfTurn = -720.0f;
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} else {
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m_rateOfTurn = (rateOfTurn / 4.733f) * (rateOfTurn / 4.733f);
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}
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m_rateOfTurnAvailable = rateOfTurn != 0x80;
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int sog = ((ba[6] & 0x3f) << 4) | ((ba[7] >> 4) & 0xf);
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m_speedOverGroundAvailable = sog != 1023;
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m_speedOverGround = sog * 0.1f;
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m_positionAccuracy = (ba[7] >> 3) & 0x1;
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int32_t longitude = ((ba[7] & 0x7) << 25) | ((ba[8] & 0xff) << 17) | ((ba[9] & 0xff) << 9) | ((ba[10] & 0xff) << 1) | ((ba[11] >> 7) & 1);
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longitude = (longitude << 4) >> 4;
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m_longitudeAvailable = longitude != 0x6791ac0;
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m_longitude = longitude / 60.0f / 10000.0f;
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int32_t latitude = ((ba[11] & 0x7f) << 20) | ((ba[12] & 0xff) << 12) | ((ba[13] & 0xff) << 4) | ((ba[14] >> 4) & 0x4);
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latitude = (latitude << 5) >> 5;
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m_latitudeAvailable = latitude != 0x3412140;
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m_latitude = latitude / 60.0f / 10000.0f;
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int cog = ((ba[14] & 0xf) << 8) | (ba[15] & 0xff);
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m_courseAvailable = cog != 3600;
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m_course = cog * 0.1f;
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m_heading = ((ba[16] & 0xff) << 1) | ((ba[17] >> 7) & 0x1);
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m_headingAvailable = m_heading != 511;
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m_timeStamp = (ba[17] >> 1) & 0x3f;
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m_specialManoeuvre = ((ba[17] & 0x1) << 1) | ((ba[18] >> 7) & 0x1);
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}
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QString AISPositionReport::getStatusString(int status)
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{
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const QStringList statuses = {
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"Under way using engine",
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"At anchor",
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"Not under command",
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"Restricted manoeuvrability",
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"Constrained by her draught",
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"Moored",
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"Aground",
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"Engaged in fishing",
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"Under way sailing",
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"Reserved for future amendment of navigational status for ships carrying DG, HS, or MP, or IMO hazard or pollutant category C (HSC)",
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"Reserved for future amendment of navigational status for carrying DG, HS or MP, or IMO hazard or pollutant category A (WIG)",
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"Reserved for future use",
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"Reserved for future use",
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"Reserved for future use",
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"Reserved for future use",
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"Not defined"
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};
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return statuses[status];
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}
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QString AISPositionReport::getType()
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{
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if (m_id == 1) {
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return "Position report (Scheduled)";
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} else if (m_id == 2) {
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return "Position report (Assigned)";
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} else {
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return "Position report (Interrogated)";
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}
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}
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QString AISPositionReport::toString()
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{
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QString speed = m_speedOverGround == 1022 ? ">102.2" : QString::number(m_speedOverGround);
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return QString("Lat: %1%6 Lon: %2%6 Speed: %3 knts Course: %4%6 Status: %5")
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.arg(m_latitude)
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.arg(m_longitude)
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.arg(speed)
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.arg(m_course)
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.arg(AISPositionReport::getStatusString(m_status))
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.arg(QChar(0xb0));
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}
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AISBaseStationReport::AISBaseStationReport(QByteArray ba) :
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AISMessage(ba)
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{
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int year = ((ba[4] & 0x3) << 12) | ((ba[5] & 0xff) << 4) | ((ba[6] >> 4) & 0xf);
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int month = ba[6] & 0xf;
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int day = ((ba[7] >> 3) & 0x1f);
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int hour = ((ba[7] & 0x7) << 2) | ((ba[8] >> 6) & 0x3);
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int minute = ba[8] & 0x3f;
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int second = (ba[9] >> 2) & 0x3f;
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m_utc = QDateTime(QDate(year, month, day), QTime(hour, minute, second), Qt::UTC);
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m_positionAccuracy = (ba[9] >> 1) & 0x1;
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int32_t longitude = ((ba[9] & 0x1) << 27) | ((ba[10] & 0xff) << 19) | ((ba[11] & 0xff) << 11) | ((ba[12] & 0xff) << 3) | ((ba[13] >> 5) & 0x7);
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longitude = (longitude << 4) >> 4;
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m_longitudeAvailable = longitude != 0x6791ac0;
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m_longitude = longitude / 60.0f / 10000.0f;
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int32_t latitude = ((ba[13] & 0x1f) << 22) | ((ba[14] & 0xff) << 14) | ((ba[15] & 0xff) << 6) | ((ba[16] >> 2) & 0x3f);
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latitude = (latitude << 5) >> 5;
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m_latitudeAvailable = latitude != 0x3412140;
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m_latitude = latitude / 60.0f / 10000.0f;
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}
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QString AISBaseStationReport::toString()
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{
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return QString("Lat: %1%3 Lon: %2%3 %4")
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.arg(m_latitude)
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.arg(m_longitude)
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.arg(QChar(0xb0))
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.arg(m_utc.toString());
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}
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AISShipStaticAndVoyageData::AISShipStaticAndVoyageData(QByteArray ba) :
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AISMessage(ba)
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{
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m_version = ba[4] & 0x3;
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m_imo = ((ba[5] & 0xff) << 22) | ((ba[6] & 0xff) << 14) | ((ba[7] & 0xff) << 6) | ((ba[8] >> 2) & 0x3f);
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m_callsign = AISMessage::getString(ba, 8, 2, 7);
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m_name = AISMessage::getString(ba, 14, 8, 20);
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m_type = ba[29] & 0xff;
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m_dimension = ((ba[30] & 0xff) << 22) | ((ba[31] & 0xff) << 14) | ((ba[32] & 0xff) << 6) | ((ba[33] >> 2) & 0x3f);
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m_a = (m_dimension >> 21) & 0x1ff;
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m_b = (m_dimension >> 12) & 0x1ff;
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m_c = (m_dimension >> 6) & 0x3f;
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m_d = m_dimension & 0x3f;
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m_positionFixing = ((ba[33] & 0x3) << 2) | ((ba[34] >> 6) & 0x3);
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m_eta = ((ba[34] & 0x3f) << 14) | ((ba[35] & 0xff) << 6) | ((ba[36] >> 2) & 0x3f);
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m_draught = ((ba[36] & 0x3) << 6) | ((ba[37] >> 2) & 0x3f);
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m_destination = AISMessage::getString(ba, 37, 2, 20);
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}
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QString AISShipStaticAndVoyageData::toString()
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{
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return QString("IMO: %1 Callsign: %2 Name: %3 Type: %4 Destination: %5")
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.arg(m_imo == 0 ? "N/A" : QString::number(m_imo))
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.arg(m_callsign)
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.arg(m_name)
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.arg(AISMessage::typeToString(m_type))
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.arg(m_destination);
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}
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AISBinaryMessage::AISBinaryMessage(QByteArray ba) :
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AISMessage(ba)
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{
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m_sequenceNumber = ba[4] & 0x3;
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m_destinationId = ((ba[5] & 0xff) << 22) | ((ba[6] & 0xff) << 14) | ((ba[7] & 0xff) << 6) | ((ba[8] >> 2) & 0x3f);
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m_retransmitFlag = (ba[8] >> 1) & 0x1;
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}
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QString AISBinaryMessage::toString()
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{
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return QString("Seq No: %1 Destination: %2 Retransmit: %3")
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.arg(m_sequenceNumber)
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.arg(m_destinationId)
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.arg(m_retransmitFlag);
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}
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AISBinaryAck::AISBinaryAck(QByteArray ba) :
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AISMessage(ba)
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{
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}
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AISBinaryBroadcast::AISBinaryBroadcast(QByteArray ba) :
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AISMessage(ba)
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{
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}
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AISSARAircraftPositionReport::AISSARAircraftPositionReport(QByteArray ba) :
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AISMessage(ba)
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{
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m_altitude = ((ba[4] & 0x3) << 10) | ((ba[5] & 0xff) << 2) | ((ba[6] >> 6) & 0x3);
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m_altitudeAvailable = m_altitude != 4095;
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int sog = ((ba[6] & 0x3f) << 4) | ((ba[7] >> 4) & 0xf);
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m_speedOverGroundAvailable = sog != 1023;
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m_speedOverGround = sog;
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m_positionAccuracy = (ba[7] >> 3) & 0x1;
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int32_t longitude = ((ba[7] & 0x7) << 25) | ((ba[8] & 0xff) << 17) | ((ba[9] & 0xff) << 9) | ((ba[10] & 0xff) << 1) | ((ba[11] >> 7) & 1);
|
|
longitude = (longitude << 4) >> 4;
|
|
m_longitudeAvailable = longitude != 0x6791ac0;
|
|
m_longitude = longitude / 60.0f / 10000.0f;
|
|
|
|
int32_t latitude = ((ba[11] & 0x7f) << 20) | ((ba[12] & 0xff) << 12) | ((ba[13] & 0xff) << 4) | ((ba[14] >> 4) & 0x4);
|
|
latitude = (latitude << 5) >> 5;
|
|
m_latitudeAvailable = latitude != 0x3412140;
|
|
m_latitude = latitude / 60.0f / 10000.0f;
|
|
|
|
int cog = ((ba[14] & 0xf) << 8) | (ba[15] & 0xff);
|
|
m_courseAvailable = cog != 3600;
|
|
m_course = cog * 0.1f;
|
|
|
|
m_timeStamp = (ba[16] >> 2) & 0x3f;
|
|
}
|
|
|
|
QString AISSARAircraftPositionReport::toString()
|
|
{
|
|
QString altitude = m_altitude == 4094 ? ">4094" : QString::number(m_altitude);
|
|
QString speed = m_speedOverGround == 1022 ? ">1022" : QString::number(m_speedOverGround);
|
|
return QString("Lat: %1%6 Lon: %2%6 Speed: %3 knts Course: %4%6 Alt: %5 m")
|
|
.arg(m_latitude)
|
|
.arg(m_longitude)
|
|
.arg(speed)
|
|
.arg(m_course)
|
|
.arg(altitude)
|
|
.arg(QChar(0xb0));
|
|
}
|
|
|
|
|
|
AISUTCInquiry::AISUTCInquiry(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISSafetyMessage::AISSafetyMessage(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_sequenceNumber = ba[4] & 0x3;
|
|
m_destinationId = ((ba[5] & 0xff) << 22) | ((ba[6] & 0xff) << 14) | ((ba[7] & 0xff) << 6) | ((ba[8] >> 2) & 0x3f);
|
|
m_retransmitFlag = (ba[8] >> 1) & 0x1;
|
|
m_safetyRelatedText = AISMessage::getString(ba, 9, 8, (ba.size() - 9) * 8 / 6);
|
|
}
|
|
|
|
QString AISSafetyMessage::toString()
|
|
{
|
|
return QString("To %1: Safety message: %2").arg(m_destinationId).arg(m_safetyRelatedText);
|
|
}
|
|
|
|
AISSafetyAck::AISSafetyAck(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISSafetyBroadcast::AISSafetyBroadcast(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_safetyRelatedText = AISMessage::getString(ba, 5, 8, (ba.size() - 5) * 8 / 6);
|
|
}
|
|
|
|
QString AISSafetyBroadcast::toString()
|
|
{
|
|
return QString("Safety message: %1").arg(m_safetyRelatedText);
|
|
}
|
|
|
|
AISInterrogation::AISInterrogation(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISAssignedModeCommand::AISAssignedModeCommand(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_destinationIdA = ((ba[5] & 0xff) << 22) | ((ba[6] & 0xff) << 14) | ((ba[7] & 0xff) << 6) | ((ba[8] >> 2) & 0x3f);
|
|
m_offsetA = ((ba[8] & 0x3) << 10) | ((ba[9] & 0xff) << 2) | ((ba[10] >> 6) & 0x3);
|
|
m_incrementA = ((ba[10] & 0x3f) << 4) | ((ba[11] >> 4) & 0xf);
|
|
m_bAvailable = false;
|
|
}
|
|
|
|
QString AISAssignedModeCommand::toString()
|
|
{
|
|
return QString("Dest A: %1 Offset A: %2 Inc A: %3")
|
|
.arg(m_destinationIdA)
|
|
.arg(m_offsetA)
|
|
.arg(m_incrementA);
|
|
}
|
|
|
|
AISGNSSBroadcast::AISGNSSBroadcast(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISStandardClassBPositionReport::AISStandardClassBPositionReport(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
int sog = ((ba[5] & 0x3) << 8) | (ba[6] & 0xff);
|
|
m_speedOverGroundAvailable = sog != 1023;
|
|
m_speedOverGround = sog * 0.1f;
|
|
|
|
m_positionAccuracy = (ba[7] >> 7) & 0x1;
|
|
|
|
int32_t longitude = ((ba[7] & 0x7f) << 21) | ((ba[8] & 0xff) << 13) | ((ba[9] & 0xff) << 5) | ((ba[10] >> 3) & 0x1f);
|
|
longitude = (longitude << 4) >> 4;
|
|
m_longitudeAvailable = longitude != 0x6791ac0;
|
|
m_longitude = longitude / 60.0f / 10000.0f;
|
|
|
|
int32_t latitude = ((ba[10] & 0x7) << 24) | ((ba[11] & 0xff) << 16) | ((ba[12] & 0xff) << 8) | (ba[13] & 0xff);
|
|
latitude = (latitude << 5) >> 5;
|
|
m_latitudeAvailable = latitude != 0x3412140;
|
|
m_latitude = latitude / 60.0f / 10000.0f;
|
|
|
|
int cog = ((ba[14] & 0xff) << 4) | ((ba[15] >> 4) & 0xf);
|
|
m_courseAvailable = cog != 3600;
|
|
m_course = cog * 0.1f;
|
|
|
|
m_heading = ((ba[15] & 0xf) << 5) | ((ba[16] >> 3) & 0x1f);
|
|
m_headingAvailable = m_heading != 511;
|
|
|
|
m_timeStamp = ((ba[16] & 0x7) << 3) | ((ba[17] >> 5) & 0x7);
|
|
}
|
|
|
|
QString AISStandardClassBPositionReport::toString()
|
|
{
|
|
return QString("Lat: %1%5 Lon: %2%5 Speed: %3 knts Course: %4%5")
|
|
.arg(m_latitude)
|
|
.arg(m_longitude)
|
|
.arg(m_speedOverGround)
|
|
.arg(m_course)
|
|
.arg(QChar(0xb0));
|
|
}
|
|
|
|
|
|
AISExtendedClassBPositionReport::AISExtendedClassBPositionReport(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
int sog = ((ba[5] & 0x3) << 8) | (ba[6] & 0xff);
|
|
m_speedOverGroundAvailable = sog != 1023;
|
|
m_speedOverGround = sog * 0.1f;
|
|
|
|
m_positionAccuracy = (ba[7] >> 7) & 0x1;
|
|
|
|
int32_t longitude = ((ba[7] & 0x7f) << 21) | ((ba[8] & 0xff) << 13) | ((ba[9] & 0xff) << 5) | ((ba[10] >> 3) & 0x1f);
|
|
longitude = (longitude << 4) >> 4;
|
|
m_longitudeAvailable = longitude != 0x6791ac0;
|
|
m_longitude = longitude / 60.0f / 10000.0f;
|
|
|
|
int32_t latitude = ((ba[10] & 0x7) << 24) | ((ba[11] & 0xff) << 16) | ((ba[12] & 0xff) << 8) | (ba[13] & 0xff);
|
|
latitude = (latitude << 5) >> 5;
|
|
m_latitudeAvailable = latitude != 0x3412140;
|
|
m_latitude = latitude / 60.0f / 10000.0f;
|
|
|
|
int cog = ((ba[14] & 0xff) << 4) | ((ba[15] >> 4) & 0xf);
|
|
m_courseAvailable = cog != 3600;
|
|
m_course = cog * 0.1f;
|
|
|
|
m_heading = ((ba[15] & 0xf) << 5) | ((ba[16] >> 3) & 0x1f);
|
|
m_headingAvailable = m_heading != 511;
|
|
|
|
m_timeStamp = ((ba[16] & 0x7) << 3) | ((ba[17] >> 5) & 0x7);
|
|
|
|
m_name = AISMessage::getString(ba, 17, 1, 20);
|
|
|
|
m_type = ((ba[32] & 1) << 7) | ((ba[33] >> 1) & 0x3f);
|
|
}
|
|
|
|
QString AISExtendedClassBPositionReport::toString()
|
|
{
|
|
return QString("Lat: %1%5 Lon: %2%5 Speed: %3 knts Course: %4%5 Name: %6 Type: %7")
|
|
.arg(m_latitude)
|
|
.arg(m_longitude)
|
|
.arg(m_speedOverGround)
|
|
.arg(m_course)
|
|
.arg(QChar(0xb0))
|
|
.arg(m_name)
|
|
.arg(typeToString(m_type));
|
|
}
|
|
|
|
AISDatalinkManagement::AISDatalinkManagement(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISAidsToNavigationReport::AISAidsToNavigationReport(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_type = ((ba[4] & 0x3) << 3) | ((ba[5] >> 5) & 0x7);
|
|
|
|
m_name = AISMessage::getString(ba, 5, 5, 20);
|
|
|
|
m_positionAccuracy = (ba[20] >> 4) & 0x1;
|
|
|
|
int32_t longitude = ((ba[20] & 0xf) << 24) | ((ba[21] & 0xff) << 16) | ((ba[22] & 0xff) << 8) | (ba[23] & 0xff);
|
|
longitude = (longitude << 4) >> 4;
|
|
m_longitudeAvailable = longitude != 0x6791ac0;
|
|
m_longitude = longitude / 60.0f / 10000.0f;
|
|
|
|
int32_t latitude = ((ba[24] & 0xff) << 19) | ((ba[25] & 0xff) << 11) | ((ba[26] & 0xff) << 3) | ((ba[27] >> 5) & 0x7);
|
|
latitude = (latitude << 5) >> 5;
|
|
m_latitudeAvailable = latitude != 0x3412140;
|
|
m_latitude = latitude / 60.0f / 10000.0f;
|
|
}
|
|
|
|
QString AISAidsToNavigationReport::toString()
|
|
{
|
|
const QStringList types = {
|
|
"N/A",
|
|
"Reference point",
|
|
"RACON",
|
|
"Fixed structure off short",
|
|
"Emergency wreck marking buoy",
|
|
"Light, without sectors",
|
|
"Light, with sectors",
|
|
"Leading light front",
|
|
"Leading light rear",
|
|
"Beacon, Cardinal N",
|
|
"Beacon, Cardinal E",
|
|
"Beacon, Cardinal S",
|
|
"Beacon, Cardianl W",
|
|
"Beacon, Port hand",
|
|
"Beacon, Starboard hand",
|
|
"Beacon, Preferred channel port hand",
|
|
"Beacon, Preferred channel starboard hand",
|
|
"Beacon, Isolated danger",
|
|
"Beacon, Safe water",
|
|
"Beacon, Special mark"
|
|
"Cardinal mark N",
|
|
"Cardinal mark E",
|
|
"Cardinal mark S",
|
|
"Cardinal mark W",
|
|
"Port hand mark",
|
|
"Starboard hand mark",
|
|
"Preferred channel port hand",
|
|
"Preferred channel starboard hand",
|
|
"Isolated danger",
|
|
"Safe water",
|
|
"Special mark",
|
|
"Light vessel/LANBY/Rigs"
|
|
};
|
|
return QString("Lat: %1%5 Lon: %2%5 Name: %3 Type: %4")
|
|
.arg(m_latitude)
|
|
.arg(m_longitude)
|
|
.arg(m_name)
|
|
.arg(types[m_type])
|
|
.arg(QChar(0xb0));
|
|
}
|
|
|
|
AISChannelManagement::AISChannelManagement(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISGroupAssignment::AISGroupAssignment(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISStaticDataReport::AISStaticDataReport(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_partNumber = ba[4] & 0x3;
|
|
if (m_partNumber == 0)
|
|
{
|
|
m_name = AISMessage::getString(ba, 5, 8, 20);
|
|
}
|
|
else if (m_partNumber == 1)
|
|
{
|
|
m_type = ba[5] & 0xff;
|
|
m_vendorId = AISMessage::getString(ba, 6, 8, 7);
|
|
m_callsign = AISMessage::getString(ba, 11, 6, 7);
|
|
}
|
|
}
|
|
|
|
QString AISStaticDataReport::toString()
|
|
{
|
|
if (m_partNumber == 0) {
|
|
return QString("Name: %1").arg(m_name);
|
|
} else if (m_partNumber == 1) {
|
|
return QString("Type: %1 Vendor ID: %2 Callsign: %3").arg(typeToString(m_type)).arg(m_vendorId).arg(m_callsign);
|
|
} else {
|
|
return "";
|
|
}
|
|
}
|
|
|
|
AISSingleSlotBinaryMessage::AISSingleSlotBinaryMessage(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_destinationIndicator = (ba[4] >> 1) & 1;
|
|
m_binaryDataFlag = ba[4] & 1;
|
|
if (m_destinationIndicator) {
|
|
m_destinationId = ((ba[5] & 0xff) << 22) | ((ba[6] & 0xff) << 14) | ((ba[7] & 0xff) << 6) | ((ba[8] >> 2) & 0x3f);
|
|
}
|
|
m_destinationIdAvailable = m_destinationIndicator;
|
|
}
|
|
|
|
QString AISSingleSlotBinaryMessage::toString()
|
|
{
|
|
QStringList s;
|
|
|
|
s.append(QString("Destination: %1").arg(m_destinationIndicator ? "Broadcast" : "Addressed"));
|
|
s.append(QString("Flag: %1").arg(m_binaryDataFlag ? "Unstructured" : "Structured"));
|
|
if (m_destinationIdAvailable) {
|
|
s.append(QString("Destination Id: %1").arg(m_destinationId));
|
|
}
|
|
|
|
return s.join(" ");
|
|
}
|
|
|
|
AISMultipleSlotBinaryMessage::AISMultipleSlotBinaryMessage(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|
|
AISLongRangePositionReport::AISLongRangePositionReport(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
m_positionAccuracy = (ba[4] >> 1) & 0x1;
|
|
m_raim = ba[4] & 0x1;
|
|
m_status = (ba[5] >> 4) & 0xf;
|
|
|
|
int32_t longitude = ((ba[5] & 0xf) << 14) | ((ba[6] & 0xff) << 6) | ((ba[7] >> 2) & 0x3f);
|
|
longitude = (longitude << 14) >> 14;
|
|
m_longitudeAvailable = longitude != 0x1a838;
|
|
m_longitude = longitude / 60.0f / 10.0f;
|
|
|
|
int32_t latitude = ((ba[7] & 0x3) << 15) | ((ba[8] & 0xff) << 7) | ((ba[9] >> 1) & 0x7f);
|
|
latitude = (latitude << 15) >> 15;
|
|
m_latitudeAvailable = latitude != 0xd548;
|
|
m_latitude = latitude / 60.0f / 10.0f;
|
|
|
|
m_speedOverGround = ((ba[9] & 0x1) << 5) | ((ba[10] >> 3) & 0x1f);
|
|
m_speedOverGroundAvailable = m_speedOverGround != 63;
|
|
|
|
m_course = ((ba[10] & 0x7) << 6) | ((ba[11] >> 2) & 0x3f);
|
|
m_courseAvailable = m_course != 512;
|
|
}
|
|
|
|
QString AISLongRangePositionReport::toString()
|
|
{
|
|
return QString("Lat: %1%6 Lon: %2%6 Speed: %3 knts Course: %4%6 Status: %5")
|
|
.arg(m_latitude)
|
|
.arg(m_longitude)
|
|
.arg(m_speedOverGround)
|
|
.arg(m_course)
|
|
.arg(AISPositionReport::getStatusString(m_status))
|
|
.arg(QChar(0xb0));
|
|
}
|
|
|
|
AISUnknownMessageID::AISUnknownMessageID(QByteArray ba) :
|
|
AISMessage(ba)
|
|
{
|
|
}
|
|
|