def decode(bv, validate=False):
'''Unpack a imo_fairway_closed message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): MMSI number of transmitter broadcasting the message
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code - part 1 of the IAI (field automatically set to "1")
- fid(uint): Functional Identifier - part 2 of the IAI (field automatically set to "11")
- reason(aisstr6): Reason for closing
- from(aisstr6): Location of closing from
- to(aisstr6): Location of closing To
- radius(uint): Extention of closed area
- unit(uint): Unit of extension value for range field
- closingday(uint): Closing from day
- closingmonth(uint): Closing from month
- fromhour(uint): From LT hour (appr)
- frommin(uint): From LT minute (appr)
- today(uint): To day
- tomonth(uint): To month
- tohour(uint): To LT hour (appr)
- tomin(uint): To LT minute (appr)
- spare2(uint): Padding out the slot (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID'] = 8
r['RepeatIndicator'] = int(bv[6:8])
r['UserID'] = int(bv[8:38])
r['Spare'] = 0
r['dac'] = 1
r['fid'] = 11
r['reason'] = aisstring.decode(bv[56:176])
r['from'] = aisstring.decode(bv[176:296])
r['to'] = aisstring.decode(bv[296:416])
r['radius'] = int(bv[416:426])
r['unit'] = int(bv[426:428])
r['closingday'] = int(bv[428:433])
r['closingmonth'] = int(bv[433:437])
r['fromhour'] = int(bv[437:442])
r['frommin'] = int(bv[442:448])
r['today'] = int(bv[448:453])
r['tomonth'] = int(bv[453:457])
r['tohour'] = int(bv[457:462])
r['tomin'] = int(bv[462:468])
r['spare2'] = 0
return r
def decode(bv, validate=False):
'''Unpack a imo_fairway_closed message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): MMSI number of transmitter broadcasting the message
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code - part 1 of the IAI (field automatically set to "1")
- fid(uint): Functional Identifier - part 2 of the IAI (field automatically set to "11")
- reason(aisstr6): Reason for closing
- from(aisstr6): Location of closing from
- to(aisstr6): Location of closing To
- radius(uint): Extention of closed area
- unit(uint): Unit of extension value for range field
- closingday(uint): Closing from day
- closingmonth(uint): Closing from month
- fromhour(uint): From LT hour (appr)
- frommin(uint): From LT minute (appr)
- today(uint): To day
- tomonth(uint): To month
- tohour(uint): To LT hour (appr)
- tomin(uint): To LT minute (appr)
- spare2(uint): Padding out the slot (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID']=8
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['Spare']=0
r['dac']=1
r['fid']=11
r['reason']=aisstring.decode(bv[56:176])
r['from']=aisstring.decode(bv[176:296])
r['to']=aisstring.decode(bv[296:416])
r['radius']=int(bv[416:426])
r['unit']=int(bv[426:428])
r['closingday']=int(bv[428:433])
r['closingmonth']=int(bv[433:437])
r['fromhour']=int(bv[437:442])
r['frommin']=int(bv[442:448])
r['today']=int(bv[448:453])
r['tomonth']=int(bv[453:457])
r['tohour']=int(bv[457:462])
r['tomin']=int(bv[462:468])
r['spare2']=0
return r
def decode(bv, validate=False):
'''Unpack a sls_wind message.
Fields in params:
- time_month(uint): Time tag of measurement month 1..12
- time_day(uint): Time tag of measurement day of the month 1..31
- time_hour(uint): Time tag of measurement UTC hours 0..23
- time_min(uint): Time tag of measurement minutes
- stationid(aisstr6): Character identifier of the station
- pos_longitude(decimal): Location of measurement East West location
- pos_latitude(decimal): Location of measurement North South location
- flow(uint): Water flow
- reserved(uint): Reserved bits for future use (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['time_month']=int(bv[0:4])
r['time_day']=int(bv[4:9])
r['time_hour']=int(bv[9:14])
r['time_min']=int(bv[14:20])
r['stationid']=aisstring.decode(bv[20:62])
r['pos_longitude']=Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000')
r['pos_latitude']=Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000')
r['flow']=int(bv[111:121])
r['reserved']=0
return r
def decode(bv, validate=False):
'''Unpack a sls_lockschedule message.
Fields in params:
- vessel(aisstr6): Vessel Name
- direction(bool): Up bound/Down bound
- ETA_month(uint): Estimated time of arrival month 1..12
- ETA_day(uint): Estimated time of arrival day of the month 1..31
- ETA_hour(uint): Estimated time of arrival UTC hours 0..23
- ETA_min(uint): Estimated time of arrival minutes
- reserved(uint): Reserved bits for future use (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['vessel'] = aisstring.decode(bv[0:90])
r['direction'] = bool(int(bv[90:91]))
r['ETA_month'] = int(bv[91:95])
r['ETA_day'] = int(bv[95:100])
r['ETA_hour'] = int(bv[100:105])
r['ETA_min'] = int(bv[105:111])
r['reserved'] = 0
return r
def decode(bv, validate=False):
'''Unpack a sls_lockorder message.
Fields in params:
- vessel(aisstr6): Vessel Name
- direction(bool): Up bound/Down bound
- ETA_month(uint): Estimated time of arrival month 1..12
- ETA_day(uint): Estimated time of arrival day of the month 1..31
- ETA_hour(uint): Estimated time of arrival UTC hours 0..23
- ETA_min(uint): Estimated time of arrival minutes
- reserved(uint): Reserved bits for future use (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['vessel']=aisstring.decode(bv[0:90])
r['direction']=bool(int(bv[90:91]))
r['ETA_month']=int(bv[91:95])
r['ETA_day']=int(bv[95:100])
r['ETA_hour']=int(bv[100:105])
r['ETA_min']=int(bv[105:111])
r['reserved']=0
return r
def decode(bv, validate=False):
'''Unpack a b_staticdata
Fields in params:
- MessageID(uint): AIS message number. Must be 19 (field automatically set to "19")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- FIX: ... add the rest of the fields
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
if len(bv) not in (160,162,168): # 162 is 160 with 2 bits padding
print 'warning... len is not 160 or 168. Found',len(bv)
r = {}
r['MessageID']=24
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['partnum']=int(bv[38:40])
if 0 == r['partnum']: # Part A message
r['name']=aisstring.decode(bv[40:160]).rstrip(' @')
elif 1 == r['partnum']: # Part B message
r['shipandcargo']=int(bv[40:48])
r['vendorid']=aisstring.decode(bv[48:90]).rstrip(' @')
r['callsign']=aisstring.decode(bv[90:132]).rstrip(' @')
r['dimA']=int(bv[132:141])
r['dimB']=int(bv[141:150])
r['dimC']=int(bv[150:156])
r['dimD']=int(bv[156:162])
r['mothership']=int(bv[132:162])
r['spare']=int(bv[162:168])
elif 2 == r['partnum']: # Part C message - no such thing
logging.info('Msg 24 with invalid part C.')
r['bits'] = str(bv[40:])
elif 3 == r['partnum']: # Part D message - no such thing
logging.info('Msg 24 with invalid part D.')
r['bits'] = str(bv[40:])
return r
def decode(bv, validate=False):
'''Unpack a b_staticdata
Fields in params:
- MessageID(uint): AIS message number. Must be 19 (field automatically set to "19")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- FIX: ... add the rest of the fields
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
if len(bv) not in (160, 162, 168): # 162 is 160 with 2 bits padding
print 'warning... len is not 160 or 168. Found', len(bv)
r = {}
r['MessageID'] = 24
r['RepeatIndicator'] = int(bv[6:8])
r['UserID'] = int(bv[8:38])
r['partnum'] = int(bv[38:40])
if 0 == r['partnum']: # Part A message
r['name'] = aisstring.decode(bv[40:160]).rstrip(' @')
elif 1 == r['partnum']: # Part B message
r['shipandcargo'] = int(bv[40:48])
r['vendorid'] = aisstring.decode(bv[48:90]).rstrip(' @')
r['callsign'] = aisstring.decode(bv[90:132]).rstrip(' @')
r['dimA'] = int(bv[132:141])
r['dimB'] = int(bv[141:150])
r['dimC'] = int(bv[150:156])
r['dimD'] = int(bv[156:162])
r['mothership'] = int(bv[132:162])
r['spare'] = int(bv[162:168])
elif 2 == r['partnum']: # Part C message - no such thing
logging.info('Msg 24 with invalid part C.')
r['bits'] = str(bv[40:])
elif 3 == r['partnum']: # Part D message - no such thing
logging.info('Msg 24 with invalid part D.')
r['bits'] = str(bv[40:])
return r
def decode(bv, validate=False):
'''Unpack a whalenotice message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code - 366 for the United States (field automatically set to "366")
- fid(uint): Functional IDentifier - 63 for the Whale Notice (field automatically set to "63")
- efid(uint): Extended Functional IDentifier. 1 for the Whale Notice (dac+fid+efid defines the exact message type) (field automatically set to "1")
- month(uint): Time of most recent whale detection. UTC month 1..12
- day(uint): Time of most recent whale detection. UTC day of the month 1..31
- hour(uint): Time of most recent whale detection. UTC hours 0..23
- min(uint): Time of most recent whale detection. UTC minutes
- sec(uint): Time of most recent whale detection. UTC seconds
- stationid(aisstr6): Identifier of the station that detected the whale. (e.g. which buoy)
- longitude(decimal): Center of the detection zone. East West location
- latitude(decimal): Center of the detection zone. North South location
- timetoexpire(uint): Seconds from the detection time until the notice expires
- radius(uint): Distance from center of detection zone (lat/lon above)
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID'] = 8
r['RepeatIndicator'] = int(bv[6:8])
r['UserID'] = int(bv[8:38])
r['Spare'] = 0
r['dac'] = 366
r['fid'] = 63
r['efid'] = 1
r['month'] = int(bv[68:72])
r['day'] = int(bv[72:77])
r['hour'] = int(bv[77:82])
r['min'] = int(bv[82:88])
r['sec'] = int(bv[88:94])
r['stationid'] = aisstring.decode(bv[94:136])
r['longitude'] = Decimal(binary.signedIntFromBV(
bv[136:164])) / Decimal('600000')
r['latitude'] = Decimal(binary.signedIntFromBV(
bv[164:191])) / Decimal('600000')
r['timetoexpire'] = int(bv[191:207])
r['radius'] = int(bv[207:223])
return r
def decode(bv, validate=False):
'''Unpack a sls_weatherreport message.
Fields in params:
- time_month(uint): Time tag of measurement month 1..12
- time_day(uint): Time tag of measurement day of the month 1..31
- time_hour(uint): Time tag of measurement UTC hours 0..23
- time_min(uint): Time tag of measurement minutes
- stationid(aisstr6): Character identifier of the station
- pos_longitude(decimal): Location of measurement East West location
- pos_latitude(decimal): Location of measurement North South location
- speed(udecimal): Average wind speed
- gust(udecimal): Wind gust
- direction(uint): Wind direction
- atmpressure(udecimal): Atmospheric pressure
- airtemp(decimal): Air temperature
- dewpoint(decimal): Dew Point
- visibility(udecimal): Visibility
- watertemp(decimal): Water Temperature
- reserved(uint): Reserved bits for future use (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['time_month'] = int(bv[0:4])
r['time_day'] = int(bv[4:9])
r['time_hour'] = int(bv[9:14])
r['time_min'] = int(bv[14:20])
r['stationid'] = aisstring.decode(bv[20:62])
r['pos_longitude'] = Decimal(binary.signedIntFromBV(
bv[62:87])) / Decimal('60000')
r['pos_latitude'] = Decimal(binary.signedIntFromBV(
bv[87:111])) / Decimal('60000')
r['speed'] = Decimal(int(bv[111:121])) / Decimal('10')
r['gust'] = Decimal(int(bv[121:131])) / Decimal('10')
r['direction'] = int(bv[131:140])
r['atmpressure'] = Decimal(int(bv[140:154])) / Decimal('10')
r['airtemp'] = Decimal(binary.signedIntFromBV(bv[154:164])) / Decimal('10')
r['dewpoint'] = Decimal(binary.signedIntFromBV(
bv[164:174])) / Decimal('10')
r['visibility'] = Decimal(int(bv[174:182])) / Decimal('10')
r['watertemp'] = Decimal(binary.signedIntFromBV(
bv[182:192])) / Decimal('10')
r['reserved'] = 0
return r
def decode(bv, validate=False):
'''Unpack a whalenotice message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code - 366 for the United States (field automatically set to "366")
- fid(uint): Functional IDentifier - 63 for the Whale Notice (field automatically set to "63")
- efid(uint): Extended Functional IDentifier. 1 for the Whale Notice (dac+fid+efid defines the exact message type) (field automatically set to "1")
- month(uint): Time of most recent whale detection. UTC month 1..12
- day(uint): Time of most recent whale detection. UTC day of the month 1..31
- hour(uint): Time of most recent whale detection. UTC hours 0..23
- min(uint): Time of most recent whale detection. UTC minutes
- sec(uint): Time of most recent whale detection. UTC seconds
- stationid(aisstr6): Identifier of the station that detected the whale. (e.g. which buoy)
- longitude(decimal): Center of the detection zone. East West location
- latitude(decimal): Center of the detection zone. North South location
- timetoexpire(uint): Seconds from the detection time until the notice expires
- radius(uint): Distance from center of detection zone (lat/lon above)
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID']=8
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['Spare']=0
r['dac']=366
r['fid']=63
r['efid']=1
r['month']=int(bv[68:72])
r['day']=int(bv[72:77])
r['hour']=int(bv[77:82])
r['min']=int(bv[82:88])
r['sec']=int(bv[88:94])
r['stationid']=aisstring.decode(bv[94:136])
r['longitude']=Decimal(binary.signedIntFromBV(bv[136:164]))/Decimal('600000')
r['latitude']=Decimal(binary.signedIntFromBV(bv[164:191]))/Decimal('600000')
r['timetoexpire']=int(bv[191:207])
r['radius']=int(bv[207:223])
return r
def decode(bv, validate=False):
'''Unpack a sls_weatherreport message.
Fields in params:
- time_month(uint): Time tag of measurement month 1..12
- time_day(uint): Time tag of measurement day of the month 1..31
- time_hour(uint): Time tag of measurement UTC hours 0..23
- time_min(uint): Time tag of measurement minutes
- stationid(aisstr6): Character identifier of the station
- pos_longitude(decimal): Location of measurement East West location
- pos_latitude(decimal): Location of measurement North South location
- speed(udecimal): Average wind speed
- gust(udecimal): Wind gust
- direction(uint): Wind direction
- atmpressure(udecimal): Atmospheric pressure
- airtemp(decimal): Air temperature
- dewpoint(decimal): Dew Point
- visibility(udecimal): Visibility
- watertemp(decimal): Water Temperature
- reserved(uint): Reserved bits for future use (field automatically set to "0")
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['time_month']=int(bv[0:4])
r['time_day']=int(bv[4:9])
r['time_hour']=int(bv[9:14])
r['time_min']=int(bv[14:20])
r['stationid']=aisstring.decode(bv[20:62])
r['pos_longitude']=Decimal(binary.signedIntFromBV(bv[62:87]))/Decimal('60000')
r['pos_latitude']=Decimal(binary.signedIntFromBV(bv[87:111]))/Decimal('60000')
r['speed']=Decimal(int(bv[111:121]))/Decimal('10')
r['gust']=Decimal(int(bv[121:131]))/Decimal('10')
r['direction']=int(bv[131:140])
r['atmpressure']=Decimal(int(bv[140:154]))/Decimal('10')
r['airtemp']=Decimal(binary.signedIntFromBV(bv[154:164]))/Decimal('10')
r['dewpoint']=Decimal(binary.signedIntFromBV(bv[164:174]))/Decimal('10')
r['visibility']=Decimal(int(bv[174:182]))/Decimal('10')
r['watertemp']=Decimal(binary.signedIntFromBV(bv[182:192]))/Decimal('10')
r['reserved']=0
return r
def decode(bv, validate=False):
"""Unpack a waterlevel message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code (field automatically set to "366")
- fid(uint): Functional Identifier (field automatically set to "63")
- month(uint): Time the measurement represents month 1..12
- day(uint): Time the measurement represents day of the month 1..31
- hour(uint): Time the measurement represents UTC hours 0..23
- min(uint): Time the measurement represents minutes
- stationid(aisstr6): Character identifier of the station. Usually a number.
- waterlevel(int): Water level in centimeters
- datum(uint): What reference datum applies to the value
- sigma(uint): Standard deviation of 1 second samples used to compute the water level height. FIX: is this the correct description of sigma?
- source(uint): How the water level was derived
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
"""
# Would be nice to check the bit count here..
# if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r["MessageID"] = 8
r["RepeatIndicator"] = int(bv[6:8])
r["UserID"] = int(bv[8:38])
r["Spare"] = 0
r["dac"] = 366
r["fid"] = 63
r["month"] = int(bv[56:60])
r["day"] = int(bv[60:65])
r["hour"] = int(bv[65:70])
r["min"] = int(bv[70:76])
r["stationid"] = aisstring.decode(bv[76:118])
r["waterlevel"] = binary.signedIntFromBV(bv[118:134])
r["datum"] = int(bv[134:139])
r["sigma"] = int(bv[139:146])
r["source"] = int(bv[146:149])
return r
def decode(bv, validate=False):
'''Unpack a waterlevel message.
Fields in params:
- MessageID(uint): AIS message number. Must be 8 (field automatically set to "8")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Spare(uint): Reserved for definition by a regional authority. (field automatically set to "0")
- dac(uint): Designated Area Code (field automatically set to "366")
- fid(uint): Functional Identifier (field automatically set to "63")
- month(uint): Time the measurement represents month 1..12
- day(uint): Time the measurement represents day of the month 1..31
- hour(uint): Time the measurement represents UTC hours 0..23
- min(uint): Time the measurement represents minutes
- stationid(aisstr6): Character identifier of the station. Usually a number.
- waterlevel(int): Water level in centimeters
- datum(uint): What reference datum applies to the value
- sigma(uint): Standard deviation of 1 second samples used to compute the water level height. FIX: is this the correct description of sigma?
- source(uint): How the water level was derived
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID'] = 8
r['RepeatIndicator'] = int(bv[6:8])
r['UserID'] = int(bv[8:38])
r['Spare'] = 0
r['dac'] = 366
r['fid'] = 63
r['month'] = int(bv[56:60])
r['day'] = int(bv[60:65])
r['hour'] = int(bv[65:70])
r['min'] = int(bv[70:76])
r['stationid'] = aisstring.decode(bv[76:118])
r['waterlevel'] = binary.signedIntFromBV(bv[118:134])
r['datum'] = int(bv[134:139])
r['sigma'] = int(bv[139:146])
r['source'] = int(bv[146:149])
return r
def decode(bv, validate=False):
'''Unpack a alltypesmsg message.
Fields in params:
- dac(uint): Designated Area Code (field automatically set to "366")
- reqDecimal(decimal): required decimal value... FIX: scale or no? (field automatically set to "122")
- unavail_uint(uint): Unavailable unsigned integer
- anUInt(uint): NO unavailable unsigned integer
- anInt(int): NO unavailable signed integer
- aBool(bool): Simple bool
- aStr(aisstr6): An ais string of 5 characters
- anUDecimal(udecimal): An unsigned decimal. Allow smaller numbers
- aDecimal(decimal): A decimal
- aFloat(float): An IEEE floating point number
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['dac']=366
r['reqDecimal']=122/Decimal('1')
r['unavail_uint']=int(bv[24:26])
r['anUInt']=int(bv[26:28])
r['anInt']=binary.signedIntFromBV(bv[28:31])
r['aBool']=bool(int(bv[31:32]))
r['aStr']=aisstring.decode(bv[32:62])
r['anUDecimal']=Decimal(int(bv[62:78]))/Decimal('10')
r['aDecimal']=Decimal(binary.signedIntFromBV(bv[78:94]))/Decimal('10')
r['aFloat']=binary.bitvec2float(bv[94:126])
return r
def decode(bv, validate=False):
'''Unpack a alltypesmsg message.
Fields in params:
- dac(uint): Designated Area Code (field automatically set to "366")
- reqDecimal(decimal): required decimal value... FIX: scale or no? (field automatically set to "122")
- unavail_uint(uint): Unavailable unsigned integer
- anUInt(uint): NO unavailable unsigned integer
- anInt(int): NO unavailable signed integer
- aBool(bool): Simple bool
- aStr(aisstr6): An ais string of 5 characters
- anUDecimal(udecimal): An unsigned decimal. Allow smaller numbers
- aDecimal(decimal): A decimal
- aFloat(float): An IEEE floating point number
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['dac'] = 366
r['reqDecimal'] = 122 / Decimal('1')
r['unavail_uint'] = int(bv[24:26])
r['anUInt'] = int(bv[26:28])
r['anInt'] = binary.signedIntFromBV(bv[28:31])
r['aBool'] = bool(int(bv[31:32]))
r['aStr'] = aisstring.decode(bv[32:62])
r['anUDecimal'] = Decimal(int(bv[62:78])) / Decimal('10')
r['aDecimal'] = Decimal(binary.signedIntFromBV(bv[78:94])) / Decimal('10')
r['aFloat'] = binary.bitvec2float(bv[94:126])
return r
def decodereason(bv, validate=False):
return aisstring.decode(bv[56:176])
def decodestationid(bv, validate=False):
return aisstring.decode(bv[76:118])
def decodeaStr(bv, validate=False):
return aisstring.decode(bv[32:62])
def decodeto(bv, validate=False):
return aisstring.decode(bv[296:416])
def decodevessel(bv, validate=False):
return aisstring.decode(bv[0:90])
def decodestationid(bv, validate=False):
return aisstring.decode(bv[20:62])
def decodestationid(bv, validate=False):
return aisstring.decode(bv[94:136])
#try:
match_obj = uscg_ais_nmea_regex.search(line)
if match_obj is None:
sys.stderr.write(line)
continue
station = match_obj.group('station')
#except:
# sys.stderr.write('bad line: %s\n' %line)
# continue
fields = line.split(',')[:6]
if '1'!=fields[2]: # Must be the start of a sequence
#if verbose:
# print 'skipping based on field 2',line
continue
if len(fields[5])<39:
#if verbose:
# print 'skipping',line
continue
bv = binary.ais6tobitvec(fields[5][:39]) # Hacked for speed
#print int(bv[8:38]),aisstring.decode(bv[112:232],True)
name = aisstring.decode(bv[112:232],True).strip('@ ')
mmsi = str(int(bv[8:38]))
imo = str(int(bv[40:70]))
#if len(name)<1 or name[0]=='X': print 'TROUBLE with line:',line
if len(name)<1: print 'TROUBLE with line:',line
o.write (mmsi+' '+imo+' '+station+' '+name+'\n')
def decodestationid(bv, validate=False):
return aisstring.decode(bv[94:136])
def decodevessel(bv, validate=False):
return aisstring.decode(bv[0:90])
def decodestationid(bv, validate=False):
return aisstring.decode(bv[76:118])
#try:
match_obj = uscg_ais_nmea_regex.search(line)
if match_obj is None:
sys.stderr.write(line)
continue
station = match_obj.group('station')
#except:
# sys.stderr.write('bad line: %s\n' %line)
# continue
fields = line.split(',')[:6]
if '1' != fields[2]: # Must be the start of a sequence
#if verbose:
# print 'skipping based on field 2',line
continue
if len(fields[5]) < 39:
#if verbose:
# print 'skipping',line
continue
bv = binary.ais6tobitvec(fields[5][:39]) # Hacked for speed
#print int(bv[8:38]),aisstring.decode(bv[112:232],True)
name = aisstring.decode(bv[112:232], True).strip('@ ')
mmsi = str(int(bv[8:38]))
imo = str(int(bv[40:70]))
#if len(name)<1 or name[0]=='X': print 'TROUBLE with line:',line
if len(name) < 1: print 'TROUBLE with line:', line
o.write(mmsi + ' ' + imo + ' ' + station + ' ' + name + '\n')
def decodefrom(bv, validate=False):
return aisstring.decode(bv[176:296])
def decodereason(bv, validate=False):
return aisstring.decode(bv[56:176])
def decodeto(bv, validate=False):
return aisstring.decode(bv[296:416])
def decodefrom(bv, validate=False):
return aisstring.decode(bv[176:296])
def decodeaStr(bv, validate=False):
return aisstring.decode(bv[32:62])
def decodelockid(bv, validate=False):
return aisstring.decode(bv[20:62])
