def updateTransponders(self, transponders, read_other_section=False, netid=None, bouquettype=None):
print >> log, "[DvbScanner] Reading transponders..."
if self.nit_other_table_id == 0x00:
mask = 0xFF
else:
mask = self.nit_current_table_id ^ self.nit_other_table_id ^ 0xFF
print >> log, "[DvbScanner] demuxer_device", str(self.demuxer_device)
print >> log, "[DvbScanner] nit_pid", str(self.nit_pid)
print >> log, "[DvbScanner] nit_current_table_id", str(self.nit_current_table_id)
print >> log, "[DvbScanner] mask", str(mask)
print >> log, "[DvbScanner] frontend", str(self.frontend)
fd = dvbreader.open(self.demuxer_device, self.nit_pid, self.nit_current_table_id, mask, self.frontend)
if fd < 0:
print >> log, "[DvbScanner] Cannot open the demuxer"
return None
nit_current_section_version = -1
nit_current_section_network_id = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
nit_other_section_version = -1
nit_other_section_network_id = -1
nit_other_sections_read = []
nit_other_sections_count = 0
nit_other_content = []
nit_other_completed = not read_other_section or self.nit_other_table_id == 0x00
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, self.TIMEOUT_SEC)
while True:
if datetime.datetime.now() > timeout:
print >> log, "[DvbScanner] Timed out"
break
section = dvbreader.read_nit(fd, self.nit_current_table_id, self.nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if (
section["header"]["table_id"] == self.nit_current_table_id
and self.dvbtype != "dvbc"
and not nit_current_completed
):
if (
section["header"]["version_number"] != nit_current_section_version
or section["header"]["network_id"] != nit_current_section_network_id
):
nit_current_section_version = section["header"]["version_number"]
nit_current_section_network_id = section["header"]["network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read) == nit_current_sections_count:
nit_current_completed = True
elif (
str(section["header"]["network_id"]) == str(netid)
and self.dvbtype == "dvbc"
and not nit_current_completed
):
if (
section["header"]["version_number"] != nit_current_section_version
or section["header"]["network_id"] != nit_current_section_network_id
):
nit_current_section_version = section["header"]["version_number"]
nit_current_section_network_id = section["header"]["network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read) == nit_current_sections_count:
nit_current_completed = True
nit_other_completed = True
elif section["header"]["table_id"] == self.nit_other_table_id and not nit_other_completed:
if (
section["header"]["version_number"] != nit_other_section_version
or section["header"]["network_id"] != nit_other_section_network_id
):
nit_other_section_version = section["header"]["version_number"]
nit_other_section_network_id = section["header"]["network_id"]
nit_other_sections_read = []
nit_other_content = []
nit_other_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_other_sections_read:
nit_other_sections_read.append(section["header"]["section_number"])
nit_other_content += section["content"]
if len(nit_other_sections_read) == nit_other_sections_count:
nit_other_completed = True
if nit_current_completed and nit_other_completed:
print >> log, "[DvbScanner] Scan complete, netid: ", str(netid)
break
dvbreader.close(fd)
nit_content = nit_current_content
nit_content += nit_other_content
transport_stream_id_list = []
logical_channel_number_dict = {}
logical_channel_number_dict_tmp = {}
hd_logical_channel_number_dict_tmp = {}
transponders_count = 0
for transponder in nit_content:
print "LINE:", transponder
if len(transponder) == 5: # lcn
key = "%x:%x:%x" % (
transponder["transport_stream_id"],
transponder["original_network_id"],
transponder["service_id"],
)
logical_channel_number_dict_tmp[key] = transponder
continue
if len(transponder) == 6: # HD lcn
key = "%x:%x:%x" % (
transponder["transport_stream_id"],
transponder["original_network_id"],
transponder["service_id"],
)
hd_logical_channel_number_dict_tmp[key] = transponder
continue
transponder["services"] = {}
transponder["dvb_type"] = self.dvbtype
transponder["bouquet_type"] = bouquettype
if transponder["dvb_type"] == "dvbc": # DVB-C
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
transponder["flags"] = 0
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
transponder["frequency"] = transponder["frequency"] / 10
transponder["namespace"] = 0xFFFF0000
transponder["inversion"] = transponder["fec_outer"]
transponder["modulation_system"] = 0
elif transponder["dvb_type"] == "dvbt": # DVB-T
transponder["namespace"] = 0xEEEE0000
transponder["frequency"] = transponder["frequency"] * 10
transponder["inversion"] = 0
transponder["plpid"] = 0
transponder["flags"] = 0
transponder["system"] = 0
elif transponder["dvb_type"] == "dvbs": # DVB-S
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
transponder["flags"] = 0
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
transponder["frequency"] = transponder["frequency"] * 10
orbital_position = ((transponder["orbital_position"] >> 12) & 0x0F) * 1000
orbital_position += ((transponder["orbital_position"] >> 8) & 0x0F) * 100
orbital_position += ((transponder["orbital_position"] >> 4) & 0x0F) * 10
orbital_position += transponder["orbital_position"] & 0x0F
if orbital_position != 0 and transponder["west_east_flag"] == 0:
orbital_position = 3600 - orbital_position
transponder["orbital_position"] = orbital_position
transponder["pilot"] = 2
if transponder["modulation_system"] == 0 and transponder["modulation_type"] == 2:
transponder["modulation_type"] = 1
transponder["inversion"] = 2
transponder["namespace"] = self.buildNamespace(transponder)
key = "%x:%x:%x" % (
transponder["namespace"],
transponder["transport_stream_id"],
transponder["original_network_id"],
)
if key in transponders:
transponder["services"] = transponders[key]["services"]
transponders[key] = transponder
transponders_count += 1
if transponder["transport_stream_id"] not in transport_stream_id_list:
transport_stream_id_list.append(transponder["transport_stream_id"])
if read_other_section:
print >> log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x and network_id = 0x%x" % (
transponders_count,
nit_current_section_network_id,
nit_other_section_network_id,
)
else:
print >> log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x" % (
transponders_count,
nit_current_section_network_id,
)
if len(hd_logical_channel_number_dict_tmp) > 0 and bouquettype == "hd":
for id in logical_channel_number_dict_tmp:
if id in hd_logical_channel_number_dict_tmp:
lcntofind = hd_logical_channel_number_dict_tmp[id]["logical_channel_number"]
lcnreplace = logical_channel_number_dict_tmp[id]["logical_channel_number"]
for id2 in logical_channel_number_dict_tmp:
if logical_channel_number_dict_tmp[id2]["logical_channel_number"] == lcntofind:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id2]
logical_channel_number_dict[id]["logical_channel_number"] = lcnreplace
logical_channel_number_dict[id] = hd_logical_channel_number_dict_tmp[id]
else:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id]
else:
for id in logical_channel_number_dict_tmp:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id]
return {
"transport_stream_id_list": transport_stream_id_list,
"logical_channel_number_dict": logical_channel_number_dict,
}
def readNIT(self): adapter = 0 demuxer_device = "/dev/dvb/adapter%d/demux%d" % (adapter, self.demuxer_id) nit_current_pid = 0x10 nit_current_table_id = 0x40 nit_other_table_id = 0x00 # don't read other table if nit_other_table_id == 0x00: mask = 0xff else: mask = nit_current_table_id ^ nit_other_table_id ^ 0xff nit_current_timeout = 20 # maximum time allowed to read the network information table (seconds) nit_current_version_number = -1 nit_current_sections_read = [] nit_current_sections_count = 0 nit_current_content = [] nit_current_completed = False fd = dvbreader.open(demuxer_device, nit_current_pid, nit_current_table_id, mask, self.selectedNIM) if fd < 0: print "[MakeBouquet][readNIT] Cannot open the demuxer" return timeout = datetime.datetime.now() timeout += datetime.timedelta(0, nit_current_timeout) while True: if datetime.datetime.now() > timeout: print "[MakeBouquet][readNIT] Timed out reading NIT" break section = dvbreader.read_nit(fd, nit_current_table_id, nit_other_table_id) if section is None: time.sleep(0.1) # no data.. so we wait a bit continue if section["header"]["table_id"] == nit_current_table_id and not nit_current_completed: if section["header"]["version_number"] != nit_current_version_number: nit_current_version_number = section["header"]["version_number"] nit_current_sections_read = [] nit_current_sections_count = section["header"]["last_section_number"] + 1 nit_current_content = [] if section["header"]["section_number"] not in nit_current_sections_read: nit_current_sections_read.append(section["header"]["section_number"]) nit_current_content += section["content"] if len(nit_current_sections_read) == nit_current_sections_count: nit_current_completed = True if nit_current_completed: break dvbreader.close(fd) if not nit_current_content: print "[MakeBouquet][readNIT] current transponder not found" return # descriptor_tag 0x5A is DVB-T, descriptor_tag 0x7f is DVB-T transponders = [t for t in nit_current_content if "descriptor_tag" in t and t["descriptor_tag"] in (0x5A, 0x7f) and t["original_network_id"] == self.transponder["onid"] and t["transport_stream_id"] == self.transponder["tsid"]] # this should only ever have a length of one transponder print "[MakeBouquet][readNIT] transponders", transponders if transponders: if transponders[0]["descriptor_tag"] == 0x5A: # DVB-T self.transponder["system"] = eDVBFrontendParametersTerrestrial.System_DVB_T else: # must be DVB-T2 self.transponder["system"] = eDVBFrontendParametersTerrestrial.System_DVB_T2 if "frequency" in transponders[0] and abs((transponders[0]["frequency"]*10) - self.transponder["frequency"]) < 1000000 and self.transponder["frequency"] != transponders[0]["frequency"]*10: print "[MakeBouquet][readNIT] updating transponder frequency from %.03f MHz to %.03f MHz" % (self.transponder["frequency"]/1000000, transponders[0]["frequency"]/100000) self.transponder["frequency"] = transponders[0]["frequency"]*10 LCNs = [t for t in nit_current_content if "descriptor_tag" in t and t["descriptor_tag"] == 0x83 and t["original_network_id"] == self.transponder["onid"]] print "[MakeBouquet][readNIT] LCNs", LCNs if LCNs: for LCN in LCNs: LCNkey = "%x:%x:%x" % (LCN["transport_stream_id"], LCN["original_network_id"], LCN["service_id"]) if not self.ignore_visible_service_flag and "visible_service_flag" in LCN and LCN["visible_service_flag"] == 0: continue # Only write to the dict if there is no entry, or override the entry if the data comes from the same transponder the channel is located on. if LCNkey not in self.logical_channel_number_dict or LCN["transport_stream_id"] == self.transponder["tsid"]: self.logical_channel_number_dict[LCNkey] = LCN namespace = 0xEEEE0000 if self.namespace_complete_terrestrial: namespace |= (self.transponder['frequency']/1000000)&0xFFFF namespacekey = "%x:%x" % (self.transponder["tsid"], self.transponder["onid"]) self.namespace_dict[namespacekey] = namespace
def updateTransponders(self, transponders, read_other_section = False, netid = None, bouquettype = None):
print>>log, "[DvbScanner] Reading transponders..."
if self.nit_other_table_id == 0x00:
mask = 0xff
else:
mask = self.nit_current_table_id ^ self.nit_other_table_id ^ 0xff
print>>log, "[DvbScanner] demuxer_device", str(self.demuxer_device)
print>>log, "[DvbScanner] nit_pid", str(self.nit_pid)
print>>log, "[DvbScanner] nit_current_table_id", str(self.nit_current_table_id)
print>>log, "[DvbScanner] mask", str(mask)
print>>log, "[DvbScanner] frontend", str(self.frontend)
fd = dvbreader.open(self.demuxer_device, self.nit_pid, self.nit_current_table_id, mask, self.frontend)
if fd < 0:
print>>log, "[DvbScanner] Cannot open the demuxer"
return None
nit_current_section_version = -1
nit_current_section_network_id = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
nit_other_section_version = -1
nit_other_section_network_id = -1
nit_other_sections_read = []
nit_other_sections_count = 0
nit_other_content = []
nit_other_completed = not read_other_section or self.nit_other_table_id == 0x00
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, self.TIMEOUT_SEC)
while True:
if datetime.datetime.now() > timeout:
print>>log, "[DvbScanner] Timed out"
break
section = dvbreader.read_nit(fd, self.nit_current_table_id, self.nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if (section["header"]["table_id"] == self.nit_current_table_id
and self.dvbtype != 'dvbc' and not nit_current_completed):
if (section["header"]["version_number"] != nit_current_section_version or section["header"]["network_id"] != nit_current_section_network_id):
nit_current_section_version = section["header"]["version_number"]
nit_current_section_network_id = section["header"]["network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read) == nit_current_sections_count:
nit_current_completed = True
elif (str(section["header"]["network_id"]) == str(netid) and self.dvbtype == 'dvbc' and not nit_current_completed):
if (section["header"]["version_number"] != nit_current_section_version or section["header"]["network_id"] != nit_current_section_network_id):
nit_current_section_version = section["header"]["version_number"]
nit_current_section_network_id = section["header"]["network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read) == nit_current_sections_count:
nit_current_completed = True
nit_other_completed = True
elif section["header"]["table_id"] == self.nit_other_table_id and not nit_other_completed:
if (section["header"]["version_number"] != nit_other_section_version or section["header"]["network_id"] != nit_other_section_network_id):
nit_other_section_version = section["header"]["version_number"]
nit_other_section_network_id = section["header"]["network_id"]
nit_other_sections_read = []
nit_other_content = []
nit_other_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_other_sections_read:
nit_other_sections_read.append(section["header"]["section_number"])
nit_other_content += section["content"]
if len(nit_other_sections_read) == nit_other_sections_count:
nit_other_completed = True
if nit_current_completed and nit_other_completed:
print>>log, "[DvbScanner] Scan complete, netid: ", str(netid)
break
dvbreader.close(fd)
nit_content = nit_current_content
nit_content += nit_other_content
transport_stream_id_list = []
logical_channel_number_dict = {}
logical_channel_number_dict_tmp = {}
hd_logical_channel_number_dict_tmp = {}
service_dict_tmp ={}
transponders_count = 0
for transponder in nit_content:
if len(transponder) == 4: # service
key = "%x:%x:%x" % (transponder["transport_stream_id"], transponder["original_network_id"], transponder["service_id"])
service_dict_tmp[key] = transponder
continue
if len(transponder) == 5: # lcn
key = "%x:%x:%x" % (transponder["transport_stream_id"], transponder["original_network_id"], transponder["service_id"])
logical_channel_number_dict_tmp[key] = transponder
continue
if len(transponder) == 6: # HD lcn
key = "%x:%x:%x" % (transponder["transport_stream_id"], transponder["original_network_id"], transponder["service_id"])
hd_logical_channel_number_dict_tmp[key] = transponder
continue
transponder["services"] = {}
transponder["dvb_type"] = self.dvbtype
transponder["bouquet_type"] = bouquettype
if transponder["dvb_type"] == 'dvbc': # DVB-C
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
transponder["flags"] = 0
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
transponder["frequency"] = transponder["frequency"] / 10
transponder["namespace"] = 0xFFFF0000
transponder["inversion"] = transponder["fec_outer"]
transponder["modulation_system"] = 0
elif transponder["dvb_type"] == 'dvbt': # DVB-T
transponder["namespace"] = 0xEEEE0000
transponder["frequency"] = transponder["frequency"] * 10
transponder["inversion"] = 0
transponder["plpid"] = 0
transponder["flags"] = 0
transponder["system"] = 0
elif transponder["dvb_type"] == 'dvbs': # DVB-S
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
transponder["flags"] = 0
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
transponder["frequency"] = transponder["frequency"] * 10
orbital_position = ((transponder["orbital_position"] >> 12) & 0x0F) * 1000
orbital_position += ((transponder["orbital_position"] >> 8) & 0x0F) * 100
orbital_position += ((transponder["orbital_position"] >> 4) & 0x0F) * 10
orbital_position += transponder["orbital_position"] & 0x0F
if orbital_position != 0 and transponder["west_east_flag"] == 0:
orbital_position = 3600 - orbital_position
transponder["orbital_position"] = orbital_position
transponder["pilot"] = 2
if transponder["modulation_system"] == 0 and transponder["modulation_type"] == 2:
transponder["modulation_type"] = 1
transponder["inversion"] = 2
transponder["namespace"] = self.buildNamespace(transponder)
key = "%x:%x:%x" % (transponder["namespace"],
transponder["transport_stream_id"],
transponder["original_network_id"])
if key in transponders:
transponder["services"] = transponders[key]["services"]
transponders[key] = transponder
transponders_count += 1
if transponder["transport_stream_id"] not in transport_stream_id_list:
transport_stream_id_list.append(transponder["transport_stream_id"])
if read_other_section:
print>>log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x and network_id = 0x%x" % (transponders_count, nit_current_section_network_id, nit_other_section_network_id)
else:
print>>log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x" % (transponders_count, nit_current_section_network_id)
if len(hd_logical_channel_number_dict_tmp) > 0 and bouquettype == 'hd':
for id in logical_channel_number_dict_tmp:
if id in hd_logical_channel_number_dict_tmp:
lcntofind = hd_logical_channel_number_dict_tmp[id]["logical_channel_number"]
lcnreplace = logical_channel_number_dict_tmp[id]["logical_channel_number"]
for id2 in logical_channel_number_dict_tmp:
if logical_channel_number_dict_tmp[id2]["logical_channel_number"] == lcntofind:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id2]
logical_channel_number_dict[id]["logical_channel_number"] = lcnreplace
logical_channel_number_dict[id] = hd_logical_channel_number_dict_tmp[id]
else:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id]
else:
for id in logical_channel_number_dict_tmp:
logical_channel_number_dict[id] = logical_channel_number_dict_tmp[id]
return {
"transport_stream_id_list": transport_stream_id_list,
"logical_channel_number_dict": logical_channel_number_dict,
"service_dict_tmp": service_dict_tmp
}
def readNIT(self):
adapter = 0
demuxer_device = "/dev/dvb/adapter%d/demux%d" % (adapter,
self.demuxer_id)
start = time.time() # for debug info
nit_current_pid = 0x10
nit_current_table_id = 0x40
nit_other_table_id = 0x00 # don't read other table
self.network_name = None
self.custom_transponder_needed = True
if nit_other_table_id == 0x00:
mask = 0xff
else:
mask = nit_current_table_id ^ nit_other_table_id ^ 0xff
nit_current_timeout = 20 # maximum time allowed to read the network information table (seconds)
nit_current_version_number = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
fd = dvbreader.open(demuxer_device, nit_current_pid,
nit_current_table_id, mask, self.selectedNIM)
if fd < 0:
print "[ABM-FrequencyFinder][readNIT] Cannot open the demuxer"
return
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, nit_current_timeout)
while True:
if datetime.datetime.now() > timeout:
print "[ABM-FrequencyFinder][readNIT] Timed out reading NIT"
break
section = dvbreader.read_nit(fd, nit_current_table_id,
nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if section["header"][
"table_id"] == nit_current_table_id and not nit_current_completed:
if section["header"][
"version_number"] != nit_current_version_number:
nit_current_version_number = section["header"][
"version_number"]
nit_current_sections_read = []
nit_current_sections_count = section["header"][
"last_section_number"] + 1
nit_current_content = []
if section["header"][
"section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(
section["header"]["section_number"])
nit_current_content += section["content"]
if 'network_name' in section["header"] and section[
"header"]["network_name"] != "Unknown":
self.network_name = section["header"]["network_name"]
if len(nit_current_sections_read
) == nit_current_sections_count:
nit_current_completed = True
if nit_current_completed:
break
dvbreader.close(fd)
if not nit_current_content:
print "[ABM-FrequencyFinder][readNIT] current transponder not found"
return
print "[ABM-FrequencyFinder][readNIT] NIT read time %.1f seconds." % (
time.time() - start)
# descriptor_tag 0x5A is DVB-T, descriptor_tag 0x7f is DVB-T
transponders = [
t for t in nit_current_content
if "descriptor_tag" in t and t["descriptor_tag"] in (
0x5A, 0x7f) and t["original_network_id"] == self.onid
and t["transport_stream_id"] == self.tsid
] # this should only ever have a length of one transponder
print "[ABM-FrequencyFinder][readNIT] transponders", transponders
if transponders:
if transponders[0]["descriptor_tag"] == 0x5A: # DVB-T
self.system = eDVBFrontendParametersTerrestrial.System_DVB_T
else: # must be DVB-T2
self.system = eDVBFrontendParametersTerrestrial.System_DVB_T2
if "frequency" in transponders[0] and abs(
(transponders[0]["frequency"] * 10) -
self.frequency) < 1000000:
self.custom_transponder_needed = False
if self.frequency != transponders[0]["frequency"] * 10:
print "[ABM-FrequencyFinder][readNIT] updating transponder frequency from %.03f MHz to %.03f MHz" % (
self.frequency / 1000000,
transponders[0]["frequency"] / 100000)
self.frequency = transponders[0]["frequency"] * 10
def updateTransponders(self, transponders, read_other_section=False):
print >> log, "[DvbScanner] Reading transponders..."
if self.nit_other_table_id == 0x00:
mask = 0xff
else:
mask = self.nit_current_table_id ^ self.nit_other_table_id ^ 0xff
fd = dvbreader.open(self.demuxer_device, self.nit_pid,
self.nit_current_table_id, mask, self.frontend)
if fd < 0:
print >> log, "[DvbScanner] Cannot open the demuxer"
return None
nit_current_section_version = -1
nit_current_section_network_id = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
nit_other_section_version = -1
nit_other_section_network_id = -1
nit_other_sections_read = []
nit_other_sections_count = 0
nit_other_content = []
nit_other_completed = not read_other_section or self.nit_other_table_id == 0x00
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, self.TIMEOUT_SEC)
while True:
if datetime.datetime.now() > timeout:
print >> log, "[DvbScanner] Timed out"
break
section = dvbreader.read_nit(fd, self.nit_current_table_id,
self.nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if section["header"][
"table_id"] == self.nit_current_table_id and not nit_current_completed:
if (section["header"]["version_number"] !=
nit_current_section_version
or section["header"]["network_id"] !=
nit_current_section_network_id):
nit_current_section_version = section["header"][
"version_number"]
nit_current_section_network_id = section["header"][
"network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"][
"last_section_number"] + 1
if section["header"][
"section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(
section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read
) == nit_current_sections_count:
nit_current_completed = True
elif section["header"][
"table_id"] == self.nit_other_table_id and not nit_other_completed:
if (section["header"]["version_number"] !=
nit_other_section_version
or section["header"]["network_id"] !=
nit_other_section_network_id):
nit_other_section_version = section["header"][
"version_number"]
nit_other_section_network_id = section["header"][
"network_id"]
nit_other_sections_read = []
nit_other_content = []
nit_other_sections_count = section["header"][
"last_section_number"] + 1
if section["header"][
"section_number"] not in nit_other_sections_read:
nit_other_sections_read.append(
section["header"]["section_number"])
nit_other_content += section["content"]
if len(nit_other_sections_read
) == nit_other_sections_count:
nit_other_completed = True
if nit_current_completed and nit_other_completed:
break
dvbreader.close(fd)
nit_content = nit_current_content
nit_content += nit_other_content
transport_stream_id_list = []
logical_channel_number_dict = {}
transponders_count = 0
for transponder in nit_content:
if len(transponder) == 5: # lcn
key = "%x:%x:%x" % (transponder["transport_stream_id"],
transponder["original_network_id"],
transponder["service_id"])
logical_channel_number_dict[key] = transponder
continue
transponder["services"] = {}
transponder["dvb_type"] = "s"
transponder["frequency"] = transponder["frequency"] * 10
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
orbital_position = (
(transponder["orbital_position"] >> 12) & 0x0F) * 1000
orbital_position += (
(transponder["orbital_position"] >> 8) & 0x0F) * 100
orbital_position += (
(transponder["orbital_position"] >> 4) & 0x0F) * 10
orbital_position += transponder["orbital_position"] & 0x0F
if orbital_position != 0 and transponder["west_east_flag"] == 0:
orbital_position = 3600 - orbital_position
transponder["orbital_position"] = orbital_position
if transponder["modulation_system"] == 0 and transponder[
"modulation_type"] == 2:
transponder["modulation_type"] = 1
transponder["namespace"] = self.buildNamespace(transponder)
transponder["inversion"] = 2
transponder["flags"] = 0
transponder["pilot"] = 2
key = "%x:%x:%x" % (transponder["namespace"],
transponder["transport_stream_id"],
transponder["original_network_id"])
if key in transponders:
transponder["services"] = transponders[key]["services"]
transponders[key] = transponder
transponders_count += 1
if transponder[
"transport_stream_id"] not in transport_stream_id_list:
transport_stream_id_list.append(
transponder["transport_stream_id"])
if read_other_section:
print >> log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x and network_id = 0x%x" % (
transponders_count, nit_current_section_network_id,
nit_other_section_network_id)
else:
print >> log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x" % (
transponders_count, nit_current_section_network_id)
return {
"transport_stream_id_list": transport_stream_id_list,
"logical_channel_number_dict": logical_channel_number_dict
}
def readNIT(self):
adapter = 0
demuxer_device = "/dev/dvb/adapter%d/demux%d" % (adapter,
self.demuxer_id)
nit_current_pid = 0x10
nit_current_table_id = 0x40
nit_other_table_id = 0x00 # don't read other table
if nit_other_table_id == 0x00:
mask = 0xff
else:
mask = nit_current_table_id ^ nit_other_table_id ^ 0xff
nit_current_timeout = 20 # maximum time allowed to read the network information table (seconds)
nit_current_version_number = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
fd = dvbreader.open(demuxer_device, nit_current_pid,
nit_current_table_id, mask, self.selectedNIM)
if fd < 0:
print "[MakeBouquet][readNIT] Cannot open the demuxer"
return
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, nit_current_timeout)
while True:
if datetime.datetime.now() > timeout:
print "[MakeBouquet][readNIT] Timed out reading NIT"
break
section = dvbreader.read_nit(fd, nit_current_table_id,
nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if section["header"][
"table_id"] == nit_current_table_id and not nit_current_completed:
if section["header"][
"version_number"] != nit_current_version_number:
nit_current_version_number = section["header"][
"version_number"]
nit_current_sections_read = []
nit_current_sections_count = section["header"][
"last_section_number"] + 1
nit_current_content = []
if section["header"][
"section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(
section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read
) == nit_current_sections_count:
nit_current_completed = True
if nit_current_completed:
break
dvbreader.close(fd)
if not nit_current_content:
print "[MakeBouquet][readNIT] current transponder not found"
return
LCNs = [
t for t in nit_current_content
if "descriptor_tag" in t and t["descriptor_tag"] == 0x83
and t["original_network_id"] in PROVIDERS[
config.plugins.MisPlsLcnScan.provider.value]["onids"]
]
print "[MakeBouquet][readNIT] LCNs", LCNs
if LCNs:
for LCN in LCNs:
LCNkey = "%x:%x:%x" % (LCN["transport_stream_id"],
LCN["original_network_id"],
LCN["service_id"])
if not self.ignore_visible_service_flag and "visible_service_flag" in LCN and LCN[
"visible_service_flag"] == 0:
continue
# Only write to the dict if there is no entry, or override the entry if the data comes from the same transponder the channel is located on.
if LCNkey not in self.logical_channel_number_dict or LCN[
"transport_stream_id"] == self.tsid:
self.logical_channel_number_dict[LCNkey] = LCN
namespace = self.transpondercurrent.orbital_position << 16
if self.namespace_complete:
namespace |= (
(self.transpondercurrent.frequency / 1000) & 0xFFFF) | (
(self.transpondercurrent.polarisation & 1) << 15)
namespacekey = "%x:%x" % (self.tsid, self.onid)
self.namespace_dict[namespacekey] = namespace
def readNIT(self):
adapter = 0
demuxer_device = "/dev/dvb/adapter%d/demux%d" % (adapter,
self.demuxer_id)
nit_current_pid = 0x10
nit_current_table_id = 0x40
nit_other_table_id = 0x00 # don't read other table
if nit_other_table_id == 0x00:
mask = 0xff
else:
mask = nit_current_table_id ^ nit_other_table_id ^ 0xff
nit_current_timeout = 20 # maximum time allowed to read the network information table (seconds)
nit_current_version_number = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
fd = dvbreader.open(demuxer_device, nit_current_pid,
nit_current_table_id, mask, self.selectedNIM)
if fd < 0:
print("[MakeBouquet][readNIT] Cannot open the demuxer")
return
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, nit_current_timeout)
while True:
if datetime.datetime.now() > timeout:
print("[MakeBouquet][readNIT] Timed out reading NIT")
break
section = dvbreader.read_nit(fd, nit_current_table_id,
nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if section["header"][
"table_id"] == nit_current_table_id and not nit_current_completed:
if section["header"][
"version_number"] != nit_current_version_number:
nit_current_version_number = section["header"][
"version_number"]
nit_current_sections_read = []
nit_current_sections_count = section["header"][
"last_section_number"] + 1
nit_current_content = []
if section["header"][
"section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(
section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read
) == nit_current_sections_count:
nit_current_completed = True
if nit_current_completed:
break
dvbreader.close(fd)
if not nit_current_content:
print("[MakeBouquet][readNIT] current transponder not found")
return
# descriptor_tag 0x5A is DVB-T, descriptor_tag 0x7f is DVB-T
transponders = [
t for t in nit_current_content
if "descriptor_tag" in t and t["descriptor_tag"] in (0x5A, 0x7f)
and t["original_network_id"] == self.transponder["onid"]
and t["transport_stream_id"] == self.transponder["tsid"]
] # this should only ever have a length of one transponder
print("[MakeBouquet][readNIT] transponders", transponders)
if transponders:
if transponders[0]["descriptor_tag"] == 0x5A: # DVB-T
self.transponder[
"system"] = eDVBFrontendParametersTerrestrial.System_DVB_T
else: # must be DVB-T2
self.transponder[
"system"] = eDVBFrontendParametersTerrestrial.System_DVB_T2
if "frequency" in transponders[0] and abs(
(transponders[0]["frequency"] * 10) - self.
transponder["frequency"]) < 1000000 and self.transponder[
"frequency"] != transponders[0]["frequency"] * 10:
print(
"[MakeBouquet][readNIT] updating transponder frequency from %.03f MHz to %.03f MHz"
% (self.transponder["frequency"] // 1000000,
transponders[0]["frequency"] // 100000))
self.transponder[
"frequency"] = transponders[0]["frequency"] * 10
# LCNs = [t for t in nit_current_content if "descriptor_tag" in t and t["descriptor_tag"] == self.lcndescriptor and t["original_network_id"] == self.transponder["onid"]]
LCNs = [
t for t in nit_current_content if "descriptor_tag" in t
and t["descriptor_tag"] == self.lcndescriptor and (
self.lcndescriptor == 0x83 or (self.lcndescriptor == 0x87 and (
"channel_list_id" in t and t["channel_list_id"] ==
self.channel_list_id or self.channel_list_id == 0)))
and t["original_network_id"] == self.transponder["onid"]
]
print("[MakeBouquet][readNIT] LCNs", LCNs)
if LCNs:
for LCN in LCNs:
LCNkey = "%x:%x:%x" % (LCN["transport_stream_id"],
LCN["original_network_id"],
LCN["service_id"])
if not self.ignore_visible_service_flag and "visible_service_flag" in LCN and LCN[
"visible_service_flag"] == 0:
continue
# Only write to the dict if there is no entry, or override the entry if the data comes from the same transponder the channel is located on.
if LCNkey not in self.logical_channel_number_dict or LCN[
"transport_stream_id"] == self.transponder["tsid"]:
self.logical_channel_number_dict[LCNkey] = LCN
namespace = 0xEEEE0000
if self.namespace_complete_terrestrial:
namespace |= (self.transponder['frequency'] // 1000000) & 0xFFFF
namespacekey = "%x:%x" % (self.transponder["tsid"],
self.transponder["onid"])
self.namespace_dict[namespacekey] = namespace
def updateTransponders(self, transponders, read_other_section = False):
print>>log, "[DvbScanner] Reading transponders..."
if self.nit_other_table_id == 0x00:
mask = 0xff
else:
mask = self.nit_current_table_id ^ self.nit_other_table_id ^ 0xff
fd = dvbreader.open(self.demuxer_device, self.nit_pid, self.nit_current_table_id, mask, self.frontend)
if fd < 0:
print>>log, "[DvbScanner] Cannot open the demuxer"
return None
nit_current_section_version = -1
nit_current_section_network_id = -1
nit_current_sections_read = []
nit_current_sections_count = 0
nit_current_content = []
nit_current_completed = False
nit_other_section_version = -1
nit_other_section_network_id = -1
nit_other_sections_read = []
nit_other_sections_count = 0
nit_other_content = []
nit_other_completed = not read_other_section or self.nit_other_table_id == 0x00
timeout = datetime.datetime.now()
timeout += datetime.timedelta(0, self.TIMEOUT_SEC)
while True:
if datetime.datetime.now() > timeout:
print>>log, "[DvbScanner] Timed out"
break
section = dvbreader.read_nit(fd, self.nit_current_table_id, self.nit_other_table_id)
if section is None:
time.sleep(0.1) # no data.. so we wait a bit
continue
if section["header"]["table_id"] == self.nit_current_table_id and not nit_current_completed:
if (section["header"]["version_number"] != nit_current_section_version
or section["header"]["network_id"] != nit_current_section_network_id):
nit_current_section_version = section["header"]["version_number"]
nit_current_section_network_id = section["header"]["network_id"]
nit_current_sections_read = []
nit_current_content = []
nit_current_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_current_sections_read:
nit_current_sections_read.append(section["header"]["section_number"])
nit_current_content += section["content"]
if len(nit_current_sections_read) == nit_current_sections_count:
nit_current_completed = True
elif section["header"]["table_id"] == self.nit_other_table_id and not nit_other_completed:
if (section["header"]["version_number"] != nit_other_section_version
or section["header"]["network_id"] != nit_other_section_network_id):
nit_other_section_version = section["header"]["version_number"]
nit_other_section_network_id = section["header"]["network_id"]
nit_other_sections_read = []
nit_other_content = []
nit_other_sections_count = section["header"]["last_section_number"] + 1
if section["header"]["section_number"] not in nit_other_sections_read:
nit_other_sections_read.append(section["header"]["section_number"])
nit_other_content += section["content"]
if len(nit_other_sections_read) == nit_other_sections_count:
nit_other_completed = True
if nit_current_completed and nit_other_completed:
break
dvbreader.close(fd)
nit_content = nit_current_content
nit_content += nit_other_content
transport_stream_id_list = []
logical_channel_number_dict = {}
transponders_count = 0
for transponder in nit_content:
if len(transponder) == 5: # lcn
key = "%x:%x:%x" % (transponder["transport_stream_id"], transponder["original_network_id"], transponder["service_id"])
logical_channel_number_dict[key] = transponder
continue
transponder["services"] = {}
transponder["dvb_type"] = "s"
transponder["frequency"] = transponder["frequency"] * 10
transponder["symbol_rate"] = transponder["symbol_rate"] * 100
if transponder["fec_inner"] != 15 and transponder["fec_inner"] > 9:
transponder["fec_inner"] = 0
orbital_position = ((transponder["orbital_position"] >> 12) & 0x0F) * 1000
orbital_position += ((transponder["orbital_position"] >> 8) & 0x0F) * 100
orbital_position += ((transponder["orbital_position"] >> 4) & 0x0F) * 10
orbital_position += transponder["orbital_position"] & 0x0F
if orbital_position != 0 and transponder["west_east_flag"] == 0:
orbital_position = 3600 - orbital_position
transponder["orbital_position"] = orbital_position
if transponder["modulation_system"] == 0 and transponder["modulation_type"] == 2:
transponder["modulation_type"] = 1
transponder["namespace"] = self.buildNamespace(transponder)
transponder["inversion"] = 2
transponder["flags"] = 0
transponder["pilot"] = 2
key = "%x:%x:%x" % (transponder["namespace"],
transponder["transport_stream_id"],
transponder["original_network_id"])
if key in transponders:
transponder["services"] = transponders[key]["services"]
transponders[key] = transponder
transponders_count += 1
if transponder["transport_stream_id"] not in transport_stream_id_list:
transport_stream_id_list.append(transponder["transport_stream_id"])
if read_other_section:
print>>log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x and network_id = 0x%x" % (transponders_count, nit_current_section_network_id, nit_other_section_network_id)
else:
print>>log, "[DvbScanner] Added/Updated %d transponders with network_id = 0x%x" % (transponders_count, nit_current_section_network_id)
return {
"transport_stream_id_list": transport_stream_id_list,
"logical_channel_number_dict": logical_channel_number_dict
}
def readNIT(self): adapter = 0 demuxer_device = "/dev/dvb/adapter%d/demux%d" % (adapter, self.demuxer_id) start = time.time() # for debug info nit_current_pid = 0x10 nit_current_table_id = 0x40 nit_other_table_id = 0x00 # don't read other table self.network_name = None self.custom_transponder_needed = True if nit_other_table_id == 0x00: mask = 0xff else: mask = nit_current_table_id ^ nit_other_table_id ^ 0xff nit_current_timeout = 20 # maximum time allowed to read the network information table (seconds) nit_current_version_number = -1 nit_current_sections_read = [] nit_current_sections_count = 0 nit_current_content = [] nit_current_completed = False fd = dvbreader.open(demuxer_device, nit_current_pid, nit_current_table_id, mask, self.selectedNIM) if fd < 0: print "[ABM-FrequencyFinder][readNIT] Cannot open the demuxer" return timeout = datetime.datetime.now() timeout += datetime.timedelta(0, nit_current_timeout) while True: if datetime.datetime.now() > timeout: print "[ABM-FrequencyFinder][readNIT] Timed out reading NIT" break section = dvbreader.read_nit(fd, nit_current_table_id, nit_other_table_id) if section is None: time.sleep(0.1) # no data.. so we wait a bit continue if section["header"]["table_id"] == nit_current_table_id and not nit_current_completed: if section["header"]["version_number"] != nit_current_version_number: nit_current_version_number = section["header"]["version_number"] nit_current_sections_read = [] nit_current_sections_count = section["header"]["last_section_number"] + 1 nit_current_content = [] if section["header"]["section_number"] not in nit_current_sections_read: nit_current_sections_read.append(section["header"]["section_number"]) nit_current_content += section["content"] if 'network_name' in section["header"] and section["header"]["network_name"] != "Unknown": self.network_name = section["header"]["network_name"] if len(nit_current_sections_read) == nit_current_sections_count: nit_current_completed = True if nit_current_completed: break dvbreader.close(fd) if not nit_current_content: print "[ABM-FrequencyFinder][readNIT] current transponder not found" return print "[ABM-FrequencyFinder][readNIT] NIT read time %.1f seconds." % (time.time() - start) # descriptor_tag 0x5A is DVB-T, descriptor_tag 0x7f is DVB-T transponders = [t for t in nit_current_content if "descriptor_tag" in t and t["descriptor_tag"] in (0x5A, 0x7f) and t["original_network_id"] == self.onid and t["transport_stream_id"] == self.tsid] # this should only ever have a length of one transponder print "[ABM-FrequencyFinder][readNIT] transponders", transponders if transponders: if transponders[0]["descriptor_tag"] == 0x5A: # DVB-T self.system = eDVBFrontendParametersTerrestrial.System_DVB_T else: # must be DVB-T2 self.system = eDVBFrontendParametersTerrestrial.System_DVB_T2 if "frequency" in transponders[0] and abs((transponders[0]["frequency"]*10) - self.frequency) < 1000000: self.custom_transponder_needed = False if self.frequency != transponders[0]["frequency"]*10: print "[ABM-FrequencyFinder][readNIT] updating transponder frequency from %.03f MHz to %.03f MHz" % (self.frequency/1000000, transponders[0]["frequency"]/100000) self.frequency = transponders[0]["frequency"]*10
