def parseTable(self, table_id, current_next, sections):
msg = {
"table_type": "PMT",
"table_id": table_id,
"current": current_next,
}
services = {}
for (data, section_length) in sections:
service_id = (ord(data[3]) << 8) + ord(data[4])
service = {}
service['pcr_pid'] = ((ord(data[8]) << 8) + ord(data[9])) & 0x1fff
prog_info_length = ((ord(data[10]) << 8) + ord(data[11])) & 0x0fff
i = 12
prog_info_end = i + prog_info_length
service['descriptors'] = []
while i < prog_info_end:
print(i, prog_info_end, len(data))
descriptor, i = parseDescriptor(i, data)
service['descriptors'].append(descriptor)
service['streams'] = []
while i < section_length + 3 - 4:
stream = {}
stream['type'] = ord(data[i])
stream['pid'] = (
(ord(data[i + 1]) << 8) + ord(data[i + 2])) & 0x1fff
es_info_length = (
(ord(data[i + 3]) << 8) + ord(data[i + 4])) & 0x0fff
i = i + 5
es_info_end = i + es_info_length
stream['descriptors'] = []
while i < es_info_end:
descriptor, i = parseDescriptor(i, data)
stream['descriptors'].append(descriptor)
service['streams'].append(stream)
# a little bit of simplification here:
if stream['type'] in [3, 4] and 'audio_pid' not in service:
service['audio_pid'] = stream['pid']
elif stream['type'] in [1, 2] and 'video_pid' not in service:
service['video_pid'] = stream['pid']
services[service_id] = service
msg['services'] = services
return msg
def parseTable(self, table_id, current_next, sections):
msg = { "table_type" : "PMT",
"table_id" : table_id,
"current" : current_next,
}
services = {}
for (data,section_length) in sections:
service_id = (ord(data[3])<<8) + ord(data[4])
service = {}
service['pcr_pid'] = ( (ord(data[8])<<8) + ord(data[9]) ) & 0x1fff
prog_info_length = ( (ord(data[10])<<8) + ord(data[11]) ) & 0x0fff
i=12
prog_info_end = i+prog_info_length
service['descriptors'] = []
while i < prog_info_end:
print i,prog_info_end, len(data)
descriptor,i = parseDescriptor(i,data)
service['descriptors'].append(descriptor)
service['streams'] = []
while i < section_length+3-4:
stream = {}
stream['type'] = ord(data[i])
stream['pid'] = ( (ord(data[i+1])<<8) + ord(data[i+2]) ) & 0x1fff
es_info_length = ( (ord(data[i+3])<<8) + ord(data[i+4]) ) & 0x0fff
i=i+5
es_info_end = i+es_info_length
stream['descriptors'] = []
while i < es_info_end:
descriptor,i = parseDescriptor(i,data)
stream['descriptors'].append(descriptor)
service['streams'].append(stream)
# a little bit of simplification here:
if stream['type'] in [3,4] and 'audio_pid' not in service:
service['audio_pid'] = stream['pid']
elif stream['type'] in [1,2] and 'video_pid' not in service:
service['video_pid'] = stream['pid']
services[service_id] = service
msg['services'] = services
return msg
def parseTable(self, index, sections):
(table_id, current_next, network_id) = index
msg = {
"table_type": "NIT",
"table_id": table_id,
"actual_other": self.acceptTables[table_id],
"current": current_next,
"network_id": network_id,
"descriptors": [],
}
services = {}
tss = []
for (data, section_length) in sections:
network_descriptors_length = (
(ord(data[8]) << 8) + ord(data[9])) & 0x0fff
i = 10
network_descriptors_end = i + network_descriptors_length
while i < network_descriptors_end:
descriptor, i = parseDescriptor(i, data)
msg['descriptors'].append(descriptor)
ts_loop_length = ((ord(data[i]) << 8) + ord(data[i + 1])) & 0x0fff
i = i + 2
ts_loop_end = i + ts_loop_length
while i < ts_loop_end:
ts = {}
ts['transport_stream_id'] = (ord(data[i]) << 8) + ord(
data[i + 1])
ts['original_network_id'] = (ord(data[i + 2]) << 8) + ord(
data[i + 3])
transport_descriptors_length = (
(ord(data[i + 4]) << 8) + ord(data[i + 5])) & 0x0fff
i = i + 6
transport_descriptors_end = i + transport_descriptors_length
ts['descriptors'] = []
while i < transport_descriptors_end:
descriptor, i = parseDescriptor(i, data)
ts['descriptors'].append(descriptor)
tss.append(ts)
msg['transport_streams'] = tss
return msg
def parseTable(self, index, sections):
(table_id, current_next, network_id) = index
msg = { "table_type" : "NIT",
"table_id" : table_id,
"actual_other" : self.acceptTables[table_id],
"current" : current_next,
"network_id" : network_id,
}
services = {}
tss = []
for (data,section_length) in sections:
network_descriptors_length = ((ord(data[8])<<8) + ord(data[9])) & 0x0fff
i=10
network_descriptors_end = i+network_descriptors_length
msg['descriptors'] = []
while i < network_descriptors_end:
descriptor, i = parseDescriptor(i,data)
msg['descriptors'].append(descriptor)
ts_loop_length = ((ord(data[i])<<8) + ord(data[i+1])) & 0x0fff
i=i+2
ts_loop_end = i+ts_loop_length
while i < ts_loop_end:
ts = {}
ts['transport_stream_id'] = (ord(data[i])<<8) + ord(data[i+1])
ts['original_network_id'] = (ord(data[i+2])<<8) + ord(data[i+3])
transport_descriptors_length = ((ord(data[i+4])<<8) + ord(data[i+5])) & 0x0fff
i=i+6
transport_descriptors_end = i+transport_descriptors_length
ts['descriptors'] = []
while i < transport_descriptors_end:
descriptor,i = parseDescriptor(i,data)
ts['descriptors'].append(descriptor)
tss.append(ts)
msg['transport_streams'] = tss
return msg
def main(self):
while not self.shutdown():
while self.dataReady("inbox"):
data = self.recv("inbox")
# extract basic info from this PSI packet - enough to work
# out what table it is; what section, and the version
e = [ord(data[i]) for i in range(0, 3)]
table_id = e[0]
if table_id != 0x73:
continue
syntax = e[1] & 0x80
if syntax:
continue
section_length = ((e[1] << 8) + e[2]) & 0x0fff
if not dvbcrc(data[:3 + section_length]):
continue
# now were reasonably certain we've got a correct packet
# we'll convert the rest of the packet
e = [ord(data[i]) for i in range(0, 10)]
timeNow = list(parseMJD((e[3] << 8) + e[4]))
timeNow.extend([unBCD(e[5]), unBCD(e[6]), unBCD(e[7])])
descriptors_length = ((e[8] << 8) + e[9]) & 0x0fff
i = 10
descriptors_end = i + descriptors_length
while i < descriptors_end:
(dtype, descriptor), i = parseDescriptor(i, data)
if descriptor['type'] == "local_time_offset":
table = {
"table_type": "TOT",
"UTC_now": timeNow,
"offset": descriptor['offset'],
"next": {
"offset": descriptor['nextOffset'],
"when": descriptor['timeOfChange'],
},
"country": descriptor['country'],
"region": descriptor['region'],
}
self.send(table, "outbox")
self.pause()
yield 1
def main(self):
while not self.shutdown():
while self.dataReady("inbox"):
data = self.recv("inbox")
# extract basic info from this PSI packet - enough to work
# out what table it is; what section, and the version
e = [ord(data[i]) for i in range(0,3) ]
table_id = e[0]
if table_id != 0x73:
continue
syntax = e[1] & 0x80
if syntax:
continue
section_length = ((e[1]<<8) + e[2]) & 0x0fff
if not dvbcrc(data[:3+section_length]):
continue
# now were reasonably certain we've got a correct packet
# we'll convert the rest of the packet
e = [ord(data[i]) for i in range(0,10) ]
timeNow = list( parseMJD((e[3]<<8) + e[4]) )
timeNow.extend( [unBCD(e[5]), unBCD(e[6]), unBCD(e[7])] )
descriptors_length = ((e[8]<<8) + e[9]) & 0x0fff
i = 10
descriptors_end = i + descriptors_length
while i < descriptors_end:
(dtype,descriptor),i = parseDescriptor(i,data)
if descriptor['type'] == "local_time_offset":
table = { "table_type" : "TOT",
"UTC_now" : timeNow,
"offset" : descriptor['offset'],
"next" : { "offset" : descriptor['nextOffset'],
"when" : descriptor['timeOfChange'],
},
"country" : descriptor['country'],
"region" : descriptor['region'],
}
self.send(table, "outbox")
self.pause()
yield 1
def parseTableSection(self, index, section):
(table_id, service_id, current_next, transport_stream_id,
original_network_id) = index
msg = {
"table_type": "EIT",
"table_id": table_id,
"actual_other": self.acceptTables[table_id][0],
"is_present_following": self.acceptTables[table_id][1],
"current": current_next,
"transport_stream_id": transport_stream_id,
"original_network_id": original_network_id,
"events": [],
}
(data, section_length) = section
service_id = (ord(data[3]) << 8) + ord(data[4])
i = 14
while i < section_length + 3 - 4:
e = [ord(data[x]) for x in range(i + 0, i + 12)]
event = {"service_id": service_id}
event["event_id"] = (e[0] << 8) + e[1]
# ( Y,M,D, HH,MM,SS )
event["starttime"] = list(parseMJD((e[2] << 8) + e[3]))
event["starttime"].extend([unBCD(e[4]), unBCD(e[5]), unBCD(e[6])])
event["duration"] = unBCD(e[7]), unBCD(e[8]), unBCD(e[9])
event["running_status"] = (e[10] >> 5) & 0x07
event["free_CA_mode"] = e[10] & 0x10
descriptors_length = ((e[10] << 8) + e[11]) & 0x0fff
event["descriptors"] = []
i = i + 12
descriptors_end = i + descriptors_length
while i < descriptors_end:
descriptor, i = parseDescriptor(i, data)
event['descriptors'].append(descriptor)
msg["events"].append(event)
return msg
def parseTableSection(self, index, section):
(table_id, service_id, current_next, transport_stream_id, original_network_id) = index
msg = { "table_type" : "EIT",
"table_id" : table_id,
"actual_other" : self.acceptTables[table_id][0],
"is_present_following": self.acceptTables[table_id][1],
"current" : current_next,
"transport_stream_id" : transport_stream_id,
"original_network_id" : original_network_id,
"events" : [],
}
(data,section_length) = section
service_id = (ord(data[3])<<8) + ord(data[4])
i=14
while i < section_length+3-4:
e = [ord(data[x]) for x in range(i+0,i+12)]
event = { "service_id" : service_id }
event["event_id"] = (e[0]<<8) + e[1]
# ( Y,M,D, HH,MM,SS )
event["starttime"] = list( parseMJD((e[2]<<8) + e[3]) )
event["starttime"].extend( [unBCD(e[4]), unBCD(e[5]), unBCD(e[6])] )
event["duration"] = unBCD(e[7]), unBCD(e[8]), unBCD(e[9])
event["running_status"] = (e[10] >> 5) & 0x07
event["free_CA_mode"] = e[10] & 0x10
descriptors_length = ((e[10]<<8) + e[11]) & 0x0fff
event["descriptors"] = []
i=i+12
descriptors_end = i + descriptors_length
while i < descriptors_end:
descriptor,i = parseDescriptor(i,data)
event['descriptors'].append(descriptor)
msg["events"].append(event)
return msg
def parseTable(self, index, sections):
(table_id, current_next, transport_stream_id,
original_network_id) = index
msg = {
"table_type": "SDT",
"table_id": table_id,
"actual_other": self.acceptTables[table_id],
"current": current_next,
"transport_stream_id": transport_stream_id,
"original_network_id": original_network_id,
}
services = {}
for (data, section_length) in sections:
i = 11
while i < section_length + 3 - 4:
service_id = (ord(data[i]) << 8) + ord(data[i + 1])
service = {}
lo = ord(data[i + 2])
service['eit_schedule'] = lo & 0x02
service['eit_present_following'] = lo & 0x01
hi = ord(data[i + 3])
service['running_status'] = hi >> 5
service['free_CA_mode'] = hi & 0x10
descriptors_length = ((hi << 8) + ord(data[i + 4])) & 0x0fff
i = i + 5
descriptors_end = i + descriptors_length
service['descriptors'] = []
while i < descriptors_end:
descriptor, i = parseDescriptor(i, data)
service['descriptors'].append(descriptor)
services[service_id] = service
msg['services'] = services
return msg
def parseTable(self, index, sections):
(table_id, current_next, transport_stream_id, original_network_id) = index
msg = { "table_type" : "SDT",
"table_id" : table_id,
"actual_other" : self.acceptTables[table_id],
"current" : current_next,
"transport_stream_id" : transport_stream_id,
"original_network_id" : original_network_id,
}
services = {}
for (data,section_length) in sections:
i=11
while i < section_length+3-4:
service_id = (ord(data[i])<<8) + ord(data[i+1])
service = {}
lo = ord(data[i+2])
service['eit_schedule'] = lo & 0x02
service['eit_present_following'] = lo & 0x01
hi = ord(data[i+3])
service['running_status'] = hi >> 5
service['free_CA_mode'] = hi & 0x10
descriptors_length = ((hi<<8) + ord(data[i+4])) & 0x0fff
i = i + 5
descriptors_end = i + descriptors_length
service['descriptors'] = []
while i < descriptors_end:
descriptor,i = parseDescriptor(i,data)
service['descriptors'].append(descriptor)
services[service_id] = service
msg['services'] = services
return msg
