public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type)
{
throw new Exception(string.Format("Incorrect type, expected 24 but present:{0}", type));
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
byte partNumber = payload.DecodeByte(38, 39);
if (partNumber == 0)
{
string vesselName = payload.DecodeString(40, 159).Trim();
return(new ClassBStaticAndVoyageDataMesageTypeA(
type,
timeStamp,
repeatIndicator,
mmsi,
partNumber,
vesselName));
}
if (partNumber != 1)
{
throw new Exception(string.Format("Incorrect part number, only 0 and 1 allowed, but present:{0}", partNumber));
}
//TypeB
ShipType shipType = (ShipType)payload.DecodeByte(40, 47);
string vendorId = payload.DecodeString(48, 65).Trim();
byte unitModel = payload.DecodeByte(66, 69);
uint serial = payload.DecodeUInt32(70, 89);
string callsign = payload.DecodeString(90, 131).Trim();
uint bow = payload.DecodeUInt32(132, 140);
uint stern = payload.DecodeUInt32(141, 149);
byte port = payload.DecodeByte(150, 155);
byte starboard = payload.DecodeByte(156, 161);
uint motherShipMmmsi = payload.DecodeUInt32(132, 161);
return(new ClassBStaticAndVoyageDataMesageTypeB(
type,
timeStamp,
repeatIndicator,
mmsi,
partNumber,
shipType,
vendorId,
unitModel,
serial,
callsign,
bow,
stern,
port,
starboard,
motherShipMmmsi));
}
public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type)
{
throw new Exception(string.Format("Incorrect type, expected 5 but present:{0}", type));
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
byte aisVersion = payload.DecodeByte(38, 39);
uint imo = payload.DecodeUInt32(40, 69);;
string callsign = payload.DecodeString(70, 111).Trim();
string vesselName = payload.DecodeString(112, 231).Trim();
ShipType shipType = (ShipType)payload.DecodeByte(232, 239);
uint bow = payload.DecodeUInt32(240, 248);
uint stern = payload.DecodeUInt32(249, 257);
byte port = payload.DecodeByte(258, 263);
byte starboard = payload.DecodeByte(264, 269);
EpfdFixType positionFixType = (EpfdFixType)payload.DecodeByte(270, 273);
byte etaMonth = payload.DecodeByte(274, 277);
byte etaDay = payload.DecodeByte(278, 282);
byte etaHour = payload.DecodeByte(283, 287);
byte etaMinute = payload.DecodeByte(288, 293);
float draught = (float)payload.DecodeUInt32(294, 301) / 10;
string destination = payload.DecodeString(302, 421).Trim();
bool dataTerminalReady = payload.DecodeBool(422);
bool spare = payload.DecodeBool(423);
return(new ClassAStaticAndVoyageDataMesage(
type,
timeStamp,
repeatIndicator,
mmsi,
aisVersion,
imo,
callsign,
vesselName,
shipType,
bow,
stern,
port,
starboard,
positionFixType,
etaMonth,
etaDay,
etaHour,
etaMinute,
draught,
destination,
dataTerminalReady,
spare));
}
public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type)
{
throw new Exception(string.Format("Incorrect type, expected 19 but present:{0}", type));
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
float sog = (float)payload.DecodeUInt32(46, 55) / 10;
bool posAccuracy = payload.DecodeBool(56);
float longtitude = (float)payload.DecodeFloat(57, 84) / 600000;
float latitude = (float)payload.DecodeFloat(85, 111) / 600000;
float cog = (float)payload.DecodeUInt32(112, 123) / 10;
ushort heading = payload.DecodeUShort(124, 132);
byte utcSeconds = payload.DecodeByte(133, 138);
string vesselName = payload.DecodeString(143, 262).Trim();
ShipType shipType = (ShipType)payload.DecodeByte(263, 270);
uint bow = payload.DecodeUInt32(271, 279);
uint stern = payload.DecodeUInt32(280, 288);
byte port = payload.DecodeByte(289, 294);
byte starboard = payload.DecodeByte(295, 300);
EpfdFixType positionFixType = (EpfdFixType)payload.DecodeByte(301, 304);
bool raim = payload.DecodeBool(305);
bool dataTerminalReady = payload.DecodeBool(306);
bool assigned = payload.DecodeBool(307);
byte spare = payload.DecodeByte(308, 311);
return(new ClassBExtendedPositionReportMessage(
type,
timeStamp,
repeatIndicator,
mmsi,
sog,
posAccuracy,
longtitude,
latitude,
cog,
heading,
utcSeconds,
vesselName,
shipType,
bow,
stern,
port,
starboard,
positionFixType,
raim,
dataTerminalReady,
assigned,
spare));
}
