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Add extraction of vessel length and width from AIS messages

This commit is contained in:
Jon Beniston 2022-02-04 17:17:10 +00:00
parent da870a305e
commit cb1067946c
2 changed files with 10 additions and 0 deletions
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6
sdrbase/util/ais.cpp
View File

@ -15,6 +15,8 @@
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#include <QDebug>
#include "ais.h"
AISMessage::AISMessage(const QByteArray ba)
@ -383,6 +385,10 @@ AISShipStaticAndVoyageData::AISShipStaticAndVoyageData(QByteArray ba) :
m_name = AISMessage::getString(ba, 14, 8, 20);
m_type = ba[29] & 0xff;
m_dimension = ((ba[30] & 0xff) << 22) | ((ba[31] & 0xff) << 14) | ((ba[32] & 0xff) << 6) | ((ba[33] >> 2) & 0x3f);
m_a = (m_dimension >> 21) & 0x1ff;
m_b = (m_dimension >> 12) & 0x1ff;
m_c = (m_dimension >> 6) & 0x3f;
m_d = m_dimension & 0x3f;
m_positionFixing = ((ba[33] & 0x3) << 2) | ((ba[34] >> 6) & 0x3);
m_eta = ((ba[34] & 0x3f) << 14) | ((ba[35] & 0xff) << 6) | ((ba[36] >> 2) & 0x3f);
m_draught = ((ba[36] & 0x3) << 6) | ((ba[37] >> 2) & 0x3f);

4
sdrbase/util/ais.h
View File

@ -124,6 +124,10 @@ public:
QString m_name;
quint8 m_type;
int m_dimension;
int m_a;
int m_b;
int m_c;
int m_d;
int m_positionFixing;
int m_eta;
int m_draught;