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create-metadata-ts.py
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create-metadata-ts.py
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#! /usr/bin/env python
#
# Copyright 2010, mediatvcom (http://www.mediatvcom.com/), Claude Vanderm. Based on Lorenzo Pallara scripts ([email protected])
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
from dvbobjects.PSI.PAT import *
from dvbobjects.PSI.NIT import *
from dvbobjects.PSI.SDT import *
from dvbobjects.PSI.PMT import *
from dvbobjects.DVB.Descriptors import *
from dvbobjects.MPEG.Descriptors import *
from dvbobjects.MHP.AIT import *
from dvbobjects.HBBTV.Descriptors import *
#
# Shared values
#
demo_transport_stream_id = 1 # demo value, an official value should be demanded to dvb org
demo_original_network_id = 1 # demo value, an official value should be demanded to dvb org
demo_service_id = [1, 2]
pmt_pid = [200, 300]
ait_pid = [501, 502]
# ste_pid = [2002, 2034]
# parameters reported into the AIT to signalize a broadband application.
appli_name = ["EBU-CPA1", "EBU-CPA2"] #application name
appli_root = ["http://rts1.cpa.local:8091/LaunchBar/", "http://rts2.cpa.local:8092/LaunchBar/"] #URL base of transport_protocol_descriptor
appli_path = ["index.html", "index.html"] #initial_path_bytes of simple application descriptor. So the application path will be "http://my_application_root_path/myHbbTV-app/index.html"
organisationId = [10, 10] # this is a demo value, dvb.org should assign an unique value
applicationId = [1001, 1002] # this is a demo value. This number corresponds to a trusted application.
# below, the video and audio PIDs reported into the PMT
video_pid = [2064, 2066]
audio_pid = [2065, 2067]
#
# Network Information Table
# this is a basic NIT with the minimum desciptors, OpenCaster has a big library ready to use
#
nit = network_information_section(
network_id = 1,
network_descriptor_loop = [
network_descriptor(network_name = "EBU-TECH"),
],
transport_stream_loop = [
transport_stream_loop_item(
transport_stream_id = demo_transport_stream_id,
original_network_id = demo_original_network_id,
transport_descriptor_loop = [
service_list_descriptor( #Optional
dvb_service_descriptor_loop = [
service_descriptor_loop_item(
service_ID = demo_service_id[0],
service_type = 1, # digital tv service type
),
service_descriptor_loop_item(
service_ID = demo_service_id[1],
service_type = 1, # digital tv service type
),
],
),
],
),
],
version_number = 1, # you need to change the table number every time you edit, so the decoder will compare its version with the new one and update the table
section_number = 0,
last_section_number = 0,
)
#
# Program Association Table (ISO/IEC 13818-1 2.4.4.3)
#
pat = program_association_section(
transport_stream_id = demo_transport_stream_id,
program_loop = [
program_loop_item(
program_number = demo_service_id[0],
PID = pmt_pid[0],
),
program_loop_item(
program_number = demo_service_id[1],
PID = pmt_pid[1],
),
program_loop_item(
program_number = 0, # special program for the NIT
PID = 16,
),
],
version_number = 1, # you need to change the table number every time you edit, so the decoder will compare its version with the new one and update the table
section_number = 0,
last_section_number = 0,
)
#
# Program Map Table (ISO/IEC 13818-1 2.4.4.8)
# this is PMT for HbbTV interactive applications
#
pmt = []
for i in range(0, 2):
pmt.append(program_map_section(
program_number = demo_service_id[i],
PCR_PID = 2064+i*2, # usualy the same than the video
program_info_descriptor_loop = [],
stream_loop = [
stream_loop_item(
stream_type = 2, # mpeg2 video stream type
elementary_PID = video_pid[i],
element_info_descriptor_loop = []
),
stream_loop_item(
stream_type = 3, # mpeg2 audio stream type
elementary_PID = audio_pid[i],
element_info_descriptor_loop = []
),
stream_loop_item(
stream_type = 5, # AIT stream type
elementary_PID = ait_pid[i],
element_info_descriptor_loop = [
application_signalling_descriptor(
application_type = 0x0010, # HbbTV service
AIT_version = 1, # current ait version
),
]
),
],
version_number = 1, # you need to change the table number every time you edit, so the decoder will compare its version with the new one and update the table
section_number = 0,
last_section_number = 0,
))
#
# Service Description Table (ETSI EN 300 468 5.2.3)
# this is a basic SDT with the minimum desciptors, OpenCaster has a big library ready to use
#
sdt = service_description_section(
transport_stream_id = demo_transport_stream_id,
original_network_id = demo_original_network_id,
service_loop = [
service_loop_item(
service_ID = demo_service_id[0],
EIT_schedule_flag = 0, # 0 no current even information is broadcasted, 1 broadcasted
EIT_present_following_flag = 0, # 0 no next event information is broadcasted, 1 is broadcasted
running_status = 4, # 4 service is running, 1 not running, 2 starts in a few seconds, 3 pausing
free_CA_mode = 0, # 0 means service is not scrambled, 1 means at least a stream is scrambled
service_descriptor_loop = [
service_descriptor(
service_type = 1, # digital television service
service_provider_name = "EBU TECH",
service_name = "CPA CHANNEL 1",
),
],
),
service_loop_item(
service_ID = demo_service_id[1],
EIT_schedule_flag = 0, # 0 no current even information is broadcasted, 1 broadcasted
EIT_present_following_flag = 0, # 0 no next event information is broadcasted, 1 is broadcasted
running_status = 4, # 4 service is running, 1 not running, 2 starts in a few seconds, 3 pausing
free_CA_mode = 0, # 0 means service is not scrambled, 1 means at least a stream is scrambled
service_descriptor_loop = [
service_descriptor(
service_type = 1, # digital television service
service_provider_name = "EBU TECH",
service_name = "CPA CHANNEL 2",
),
],
),
],
version_number = 1, # you need to change the table number every time you edit, so the decoder will compare its version with the new one and update the table
section_number = 0,
last_section_number = 0,
)
#
# Application Informaton Table (ETSI TS 101 812 10.4.6)
#
#
ait = []
for i in range(0, 2):
ait.append(application_information_section(
application_type = 0x0010,
common_descriptor_loop = [
external_application_authorisation_descriptor(
application_identifiers = [[organisationId[i],applicationId[i]]],
application_priority = [ 5 ]
# This descriptor informs that 2 applications are available on the program by specifying the applications identifiers (couple of organization_Id and application_Id parameters) and their related priorities (5 for the first and 1 for the second).
# Actualy our service contains only one application so this descriptor is not relevent and is just here to show you how to use this descriptor.
# This descriptor is not mandatory and you could remove it (i.e. common_descriptor_loop = []).
)
],
application_loop = [
application_loop_item(
organisation_id = organisationId[i], # this is a demo value, dvb.org should assign an unique value
application_id = applicationId[i],
application_control_code = 1,
# 2 is PRESENT, the decoder will add this application to the user choice of application
# 1 is AUTOSTART, the application will start immedtiatly to load and to execute
# 7 is DISABLED, The application shall not be started and attempts to start it shall fail.
# 4 is KILL, it will stop execute the application
application_descriptors_loop = [
transport_protocol_descriptor(
protocol_id = 0x0003, # HTTP transport protocol
URL_base = appli_root[i],
URL_extensions = [],
transport_protocol_label = 3, # HTTP transport protocol
),
application_descriptor(
application_profile = 0x0000,
#0x0000 basic profile
#0x0001 download feature
#0x0002 PVR feature
#0x0004 RTSP feature
version_major = 1, # corresponding to version 1.1.1
version_minor = 1,
version_micro = 1,
service_bound_flag = 1, # 1 means the application is expected to die on service change, 0 will wait after the service change to receive all the AITs and check if the same app is signalled or not
visibility = 3, # 3 the applications is visible to the user, 1 the application is visible only to other applications
application_priority = 1, # 1 is lowset, it is used when more than 1 applications is executing
transport_protocol_labels = [3], # If more than one protocol is signalled then each protocol is an alternative delivery mechanism. The ordering indicates
# the broadcaster's view of which transport connection will provide the best user experience (first is best)
),
application_name_descriptor(
application_name = appli_name[i],
ISO_639_language_code = "FRA"
),
simple_application_location_descriptor(initial_path_bytes = appli_path[i]),
]
),
],
version_number = 1,
section_number = 0,
last_section_number = 0,
))
#
# PSI marshalling and encapsulation
#
out = open("./nit.sec", "wb")
out.write(nit.pack())
out.close
out = open("./nit.sec", "wb") # python flush bug
out.close
os.system('/usr/local/bin/sec2ts 16 < ./nit.sec > ./nit.ts')
out = open("./sdt.sec", "wb")
out.write(sdt.pack())
out.close
out = open("./sdt.sec", "wb") # python flush bug
out.close
os.system('/usr/local/bin/sec2ts 17 < ./sdt.sec > ./sdt.ts')
out = open("./pat.sec", "wb")
out.write(pat.pack())
out.close
out = open("./pat.sec", "wb") # python flush bug
out.close
os.system('/usr/local/bin/sec2ts 0 < ./pat.sec > ./pat.ts')
for i in range(0, 2):
out = open("./pmt"+str(i)+".sec", "wb")
out.write(pmt[i].pack())
out.close
out = open("./pmt"+str(i)+".sec", "wb") # python flush bug
out.close
os.system('/usr/local/bin/sec2ts ' + str(pmt_pid[i]) + ' < ./pmt'+str(i)+'.sec > ./pmt'+str(i)+'.ts')
out = open("./ait"+str(i)+".sec", "wb")
out.write(ait[i].pack())
out.close
out = open("./ait"+str(i)+".sec", "wb") # python flush bug
out.close
os.system('/usr/local/bin/sec2ts ' + str(ait_pid[i]) + ' < ./ait'+str(i)+'.sec > ./ait'+str(i)+'.ts')
os.system('rm *.sec') # deleting of the section files.