public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type)
{
throw new Exception(string.Format("Incorrect type, expected 18 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);
CsUnitType csUnit = payload.DecodeBool(141) ? CsUnitType.ClassBCarrierSense : CsUnitType.ClassBSotdma;
bool display = payload.DecodeBool(142);
bool dsc = payload.DecodeBool(143);
bool band = payload.DecodeBool(144);
bool message22 = payload.DecodeBool(145);
bool assigned = payload.DecodeBool(146);
bool raim = payload.DecodeBool(147);
uint radioStatus = payload.DecodeUInt32(148, 167);
return(new ClassBPositionReportMessage(
type,
timeStamp,
repeatIndicator,
mmsi,
sog,
posAccuracy,
longtitude,
latitude,
cog,
heading,
utcSeconds,
raim,
radioStatus,
csUnit,
display,
dsc,
band,
message22,
assigned));
}
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 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));
}
private AisMessage CreateAisMessageFromBitPayload(BitArray payload)
{
var messageType = payload.DecodeByte(0, 5);
IAisMessageFactory factory;
if (!m_factories.TryGetValue(messageType, out factory))
{
return(new UnsupportedMessage(messageType, DateTime.UtcNow.ToFileTimeUtc()));
}
return(factory.CreateMessage(payload));
}
public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type1)
{
throw new Exception(string.Format("Incorrect type, expected 27 but present:{0}", type));
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
bool posAccuracy = payload.DecodeBool(38);
bool raim = payload.DecodeBool(39);
NavigationStatus navStatus = (NavigationStatus)payload.DecodeByte(40, 43);
float longtitude = (float)payload.DecodeFloat(44, 61) / 600000;
float latitude = (float)payload.DecodeFloat(62, 78) / 600000;
float sog = (float)payload.DecodeUInt32(79, 84) / 10;
float cog = (float)payload.DecodeUInt32(85, 93) / 10;
bool gnss = payload.DecodeBool(94);
bool spare = payload.DecodeBool(95);
return(new ClassAPositionReportLongRangeMessage(
type,
timeStamp,
repeatIndicator,
mmsi,
posAccuracy,
raim,
navStatus,
longtitude,
latitude,
sog,
cog,
gnss,
spare));
}
public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type1)
{
throw new Exception($"Incorrect type, expected 4 but present:{type}");
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
uint year = payload.DecodeUInt32(38, 51);
byte month = payload.DecodeByte(52, 55);
byte day = payload.DecodeByte(56, 60);
byte hour = payload.DecodeByte(61, 65);
byte minute = payload.DecodeByte(66, 71);
byte second = payload.DecodeByte(72, 77);
bool posAccuracy = payload.DecodeBool(78);
float longtitude = (float)payload.DecodeFloat(79, 106) / 600000;
float latitude = (float)payload.DecodeFloat(107, 133) / 600000;
EpfdFixType positionFixType = (EpfdFixType)payload.DecodeByte(134, 137);
bool raim = payload.DecodeBool(148);
uint radioStatus = payload.DecodeUInt32(149, 167);
return(new BaseStationReportMessage(
type,
timeStamp,
repeatIndicator,
mmsi,
year,
month,
day,
hour,
minute,
second,
posAccuracy,
longtitude,
latitude,
positionFixType,
raim,
radioStatus));
}
public static Sscc96Tag FromBinary(BitArray rawBits)
{
uint header = rawBits.DecodeUInt32(0, 8);
if (header != BinaryHeader)
{
throw new FormatException(string.Format("Invalid EPC Header: 0x{0:X2} (expected 0x{1:X2)", header, BinaryHeader));
}
string companyPrefix;
string extensionAndSerial;
byte partition;
byte filter = rawBits.DecodeByte(8, 3);
rawBits.DecodePartition(PartitionTable, 11, out partition, out companyPrefix, out extensionAndSerial);
return(new Sscc96Tag(filter, partition, companyPrefix, extensionAndSerial));
}
/// <summary>
/// Converts the specified bit array into a binary EPC string representation
/// </summary>
/// <param name="bits"></param>
/// <returns></returns>
public static string BitArrayToBinaryString(BitArray bits)
{
var bitCount = bits.Length + (16 - bits.Length % 16) % 16;
var charCount = bitCount / 4;
StringBuilder sb = new StringBuilder(charCount);
for (int i = 0; i < charCount; i++)
{
int start = i * 4;
int len = Math.Min(4, bits.Length - start);
if (len > 0)
{
sb.Append(EncodeHexChar(bits.DecodeByte(start, len)));
}
else
{
sb.Append('0');
}
}
return(sb.ToString());
}
public AisMessage CreateMessage(BitArray payload)
{
var type = payload.DecodeByte(0, 5);
if (type != c_type1 && type != c_type2 && type != c_type3)
{
throw new Exception(string.Format("Incorrect type, expected 1,2,3 but present:{0}", type));
}
var timeStamp = DateTime.UtcNow.ToFileTimeUtc();
byte repeatIndicator = payload.DecodeByte(6, 7);
uint mmsi = payload.DecodeUInt32(8, 37);
NavigationStatus navStatus = (NavigationStatus)payload.DecodeByte(38, 41);
int rot = payload.DecodeInt32(42, 49);
float sog = (float)payload.DecodeUInt32(50, 59) / 10;
bool posAccuracy = payload.DecodeBool(60);
float longtitude = (float)payload.DecodeFloat(61, 88) / 600000;
float latitude = (float)payload.DecodeFloat(89, 115) / 600000;
float cog = (float)payload.DecodeUInt32(116, 127) / 10;
ushort heading = payload.DecodeUShort(128, 136);
byte utcSeconds = payload.DecodeByte(137, 142);
ManeuverIndicator manuevrIndicator = (ManeuverIndicator)payload.DecodeByte(143, 144);
byte spare = payload.DecodeByte(145, 147);
bool raim = payload.DecodeBool(148);
uint radioStatus = payload.DecodeUInt32(149, 167);
return(new ClassAPositionReportMessage(
type,
timeStamp,
repeatIndicator,
mmsi,
navStatus,
rot,
sog,
posAccuracy,
longtitude,
latitude,
cog,
heading,
utcSeconds,
manuevrIndicator,
spare,
raim,
radioStatus));
}
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));
}