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Add AIS slot map and additional message decoding

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This commit is contained in:
Jon Beniston
2023-05-16 10:17:17 +01:00
parent 65b816c8a7
commit 403b62c354
17 changed files with 778 additions and 360 deletions
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sdrbase/util/ais.cpp
+49 -4
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@@ -336,12 +336,24 @@ QString AISPositionReport::getStatusString(int status)
return statuses[status];
}
QString AISPositionReport::getType()
{
if (m_id == 1) {
return "Position report (Scheduled)";
} else if (m_id == 2) {
return "Position report (Assigned)";
} else {
return "Position report (Interrogated)";
}
}
QString AISPositionReport::toString()
{
QString speed = m_speedOverGround == 1022 ? ">102.2" : QString::number(m_speedOverGround);
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(speed)
.arg(m_course)
.arg(AISPositionReport::getStatusString(m_status))
.arg(QChar(0xb0));
@@ -444,7 +456,7 @@ AISSARAircraftPositionReport::AISSARAircraftPositionReport(QByteArray ba) :
int sog = ((ba[6] & 0x3f) << 4) | ((ba[7] >> 4) & 0xf);
m_speedOverGroundAvailable = sog != 1023;
m_speedOverGround = sog * 0.1f;
m_speedOverGround = sog;
m_positionAccuracy = (ba[7] >> 3) & 0x1;
@@ -467,12 +479,14 @@ AISSARAircraftPositionReport::AISSARAircraftPositionReport(QByteArray ba) :
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(m_speedOverGround)
.arg(speed)
.arg(m_course)
.arg(m_altitude)
.arg(altitude)
.arg(QChar(0xb0));
}
@@ -520,6 +534,18 @@ AISInterrogation::AISInterrogation(QByteArray 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) :
@@ -721,6 +747,25 @@ QString AISStaticDataReport::toString()
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) :