def __init__(self, msgbinary):
super().__init__(msgbinary)
self.aidtype = self.navaidtypes[self.decode_sixbit_integer(
msgbinary[38:43])]
name = binary.decode_sixbit_ascii(msgbinary[43:163]).rstrip()
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[163:164])]
self.longitude = binary.decode_twos_complement(
msgbinary[164:192]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[192:219]) / 600000.0
tobow = self.decode_sixbit_integer(msgbinary[219:228])
tostern = self.decode_sixbit_integer(msgbinary[228:237])
toport = self.decode_sixbit_integer(msgbinary[237:243])
tostarboard = self.decode_sixbit_integer(msgbinary[243:249])
self.length = tobow + tostern
self.width = toport + tostarboard
self.epfdfixtype = self.epfdfixtypes[self.decode_sixbit_integer(
msgbinary[249:253])]
self.timestampsecond = self.decode_sixbit_integer(msgbinary[253:259])
self.offposition = self.binaryflag[self.decode_sixbit_integer(
msgbinary[259:260])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[268:269])]
self.virtualaid = self.binaryflag[self.decode_sixbit_integer(
msgbinary[269:270])]
self.assignedmode = self.binaryflag[self.decode_sixbit_integer(
msgbinary[270:271])]
nameextension = binary.decode_sixbit_ascii(msgbinary[272:361]).rstrip()
self.name = name + nameextension
def __init__(self, msgbinary):
super().__init__(msgbinary)
self.speed = self.decode_sixbit_integer(msgbinary[46:56]) / 10
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[46:47])]
self.longitude = binary.decode_twos_complement(
msgbinary[57:85]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[85:112]) / 600000.0
self.courseoverground = self.decode_sixbit_integer(
msgbinary[112:124]) / 10
self.trueheading = self.decode_sixbit_integer(msgbinary[124:133])
self.timestampsecond = self.decode_sixbit_integer(msgbinary[133:139])
self.csunit = self.csdict[self.decode_sixbit_integer(
msgbinary[141:142])]
self.displayunit = self.binaryflag[self.decode_sixbit_integer(
msgbinary[142:143])]
self.dscflag = self.binaryflag[self.decode_sixbit_integer(
msgbinary[143:144])]
self.bandflag = self.binaryflag[self.decode_sixbit_integer(
msgbinary[144:145])]
self.message22flag = self.binaryflag[self.decode_sixbit_integer(
msgbinary[145:146])]
self.assignedmodeflag = self.assignmentmode[self.decode_sixbit_integer(
msgbinary[146:147])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[147:148])]
self.radiostatus = self.decode_sixbit_integer(msgbinary[148:168])
def __init__(self, msgbinary):
super().__init__(msgbinary)
self.navstatus = self.navstatustypes[self.decode_sixbit_integer(
msgbinary[38:42])]
self.turnrate = decode_turn_rate(msgbinary[42:50])
self.speed = self.decode_sixbit_integer(msgbinary[50:60]) / 10
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[60:61])]
self.longitude = binary.decode_twos_complement(
msgbinary[61:89]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[89:116]) / 600000.0
self.courseoverground = self.decode_sixbit_integer(
msgbinary[116:128]) / 10
self.trueheading = self.decode_sixbit_integer(msgbinary[128:137])
self.timestampsecond = self.decode_sixbit_integer(
msgbinary[137:143])
try:
self.maneuverindicator = self.maneuvers[self.decode_sixbit_integer(
msgbinary[143:145])]
except KeyError:
self.maneuverindicator = 'unknown'
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[148:149])]
self.radiostatus = self.decode_sixbit_integer(msgbinary[149:168])
def __init__(self, msgbinary):
super().__init__(msgbinary)
self.speed = self.decode_sixbit_integer(msgbinary[46:56]) / 10
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[46:47])]
self.longitude = binary.decode_twos_complement(
msgbinary[57:85]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[85:112]) / 600000.0
self.courseoverground = self.decode_sixbit_integer(
msgbinary[112:124]) / 10
self.trueheading = self.decode_sixbit_integer(msgbinary[124:133])
self.timestampsecond = self.decode_sixbit_integer(msgbinary[133:139])
self.name = binary.decode_sixbit_ascii(msgbinary[143:263]).rstrip()
try:
self.shiptype = self.shiptypes[self.decode_sixbit_integer(
msgbinary[263:271])]
except KeyError:
self.shiptype = 'Unknown'
tobow = self.decode_sixbit_integer(msgbinary[271:280])
tostern = self.decode_sixbit_integer(msgbinary[280:289])
toport = self.decode_sixbit_integer(msgbinary[289:295])
tostarboard = self.decode_sixbit_integer(msgbinary[295:301])
self.length = tobow + tostern
self.width = toport + tostarboard
self.epfdfixtype = self.epfdfixtypes[self.decode_sixbit_integer(
msgbinary[301:305])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[305:306])]
self.dte = self.dtevalues[self.decode_sixbit_integer(
msgbinary[306:307])]
def __init__(self, msgbinary):
super().__init__(msgbinary)
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[38:39])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[39:40])]
self.navstatus = self.navstatustypes[self.decode_sixbit_integer(
msgbinary[40:44])]
self.longitude = binary.decode_twos_complement(
msgbinary[44:62]) / 600.0
self.latitude = binary.decode_twos_complement(msgbinary[62:79]) / 600.0
self.speed = self.decode_sixbit_integer(msgbinary[79:85]) / 10
self.courseoverground = self.decode_sixbit_integer(msgbinary[85:94])
self.gnsspositon = self.binaryflag[self.decode_sixbit_integer(
msgbinary[94:95])]
def decode_turn_rate(rawvalue):
"""
decode the turn rate value to something meaningful
Args:
rawvalue(str): turn rate encoded as binary string
Returns:
turnvalue(str): actual turn rate of the vessel
"""
decodedturnrate = binary.decode_sixbit_integer(rawvalue)
decodedvalues = {
0: 'not turning', 128: 'no turn rate available',
127: ('turning right at more than 10 degrees per minute'
' - NO TURN INDICATOR'),
129: ('turning left at more than -10 degrees per minute'
' - NO TURN INDICATOR')}
if decodedturnrate in decodedvalues:
turnvalue = decodedvalues[decodedturnrate]
else:
twos = binary.decode_twos_complement(rawvalue)
rot = (twos / 4.733) ** 2
if rawvalue[0] == '1':
rot = rot * -1
direction = 'left'
else:
direction = 'right'
turnvalue = 'turning {} at {} degrees per minute'.format(
direction, round(rot, 1))
return turnvalue
def __init__(self, msgbinary):
super().__init__(msgbinary)
self.altitude = self.decode_sixbit_integer(msgbinary[38:50])
self.speedoverground = self.decode_sixbit_integer(msgbinary[50:60])
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[60:61])]
self.longitude = binary.decode_twos_complement(
msgbinary[61:89]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[89:116]) / 600000.0
self.courseoverground = self.decode_sixbit_integer(
msgbinary[116:128]) / 10
self.timestampsecond = self.decode_sixbit_integer(msgbinary[128:134])
self.dte = self.dtevalues[self.decode_sixbit_integer(
msgbinary[142:143])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[147:148])]
self.radiostatus = self.decode_sixbit_integer(msgbinary[148:168])
def __init__(self, msgbinary):
super().__init__(msgbinary)
year = self.decode_sixbit_integer(msgbinary[38:52])
month = self.decode_sixbit_integer(msgbinary[52:56])
day = self.decode_sixbit_integer(msgbinary[56:61])
hour = self.decode_sixbit_integer(msgbinary[61:66])
minute = self.decode_sixbit_integer(msgbinary[66:72])
second = self.decode_sixbit_integer(msgbinary[72:78])
self.timestamp = '{}/{:02d}/{:02d} {:02d}:{:02d}:{:02d}'.format(
year, month, day, hour, minute, second)
self.posfixaccuracy = self.accuracy[self.decode_sixbit_integer(
msgbinary[78:79])]
self.longitude = binary.decode_twos_complement(
msgbinary[79:107]) / 600000.0
self.latitude = binary.decode_twos_complement(
msgbinary[107:134]) / 600000.0
self.epfdfixtype = self.epfdfixtypes[self.decode_sixbit_integer(
msgbinary[134:138])]
self.raim = self.binaryflag[self.decode_sixbit_integer(
msgbinary[148:149])]
self.sotdmastate = self.decode_sixbit_integer(msgbinary[149:168])
def test_empty_string_decode_twos_complement(self):
"""
an empty string should raise a NoBinaryData exception
"""
with self.assertRaises(binary.NoBinaryData):
binary.decode_twos_complement('')