#! /usr/bin/env python # # Copyright (C) 2008 Lorenzo Pallara, l.pallara@avalpa.com # # 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 # avalpa_transport_stream_id = 12500 # demo value, an official value should be demanded to dvb org avalpa_original_transport_stream_id = 8916 # demo value, an official value should be demanded to dvb org avalpa1_service_id = 1 # demo value avalpa1_pmt_pid = 1031 avalpa2_service_id = 2 # demo value avalpa2_pmt_pid = 1032 ait1_pid = 2001 # parameters reported into the AIT to signalize a broadband application. appli_name = "my hbbtv application" #application name appli_root = "http://www.rtve.es/hbbtv/redbutton/" #URL base of transport_protocol_descriptor appli_path = "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_1 = 10 # this is a demo value, dvb.org should assign an unique value applicationId_1 = 1001 # this is a demo value. This number corresponds to a trusted application. organisationId_2 = 11 applicationId_2 = 1002 # # 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 = "Avalpa",), ], transport_stream_loop = [ transport_stream_loop_item( transport_stream_id = avalpa_transport_stream_id, original_network_id = avalpa_original_transport_stream_id, transport_descriptor_loop = [ service_list_descriptor( dvb_service_descriptor_loop = [ service_descriptor_loop_item( service_ID = avalpa1_service_id, service_type = 1, # digital tv service type ), service_descriptor_loop_item( service_ID = avalpa2_service_id, 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 = avalpa_transport_stream_id, program_loop = [ program_loop_item( program_number = avalpa1_service_id, PID = avalpa1_pmt_pid, ), program_loop_item( program_number = avalpa2_service_id, PID = avalpa2_pmt_pid, ), 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, ) # # 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 = avalpa_transport_stream_id, original_network_id = avalpa_original_transport_stream_id, service_loop = [ service_loop_item( service_ID = avalpa1_service_id, 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 = "Avalpa", service_name = "Sintel", ), ], ), service_loop_item( service_ID = avalpa2_service_id, 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 = "Avalpa", service_name = "Big Buck Bunny", ), ], ), ], 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 a basic PMT the the minimum desciptors, OpenCaster has a big library ready to use # pmt1 = program_map_section( program_number = avalpa1_service_id, PCR_PID = 2064, program_info_descriptor_loop = [], stream_loop = [ stream_loop_item( stream_type = 2, # mpeg2 video stream type elementary_PID = 2064, element_info_descriptor_loop = [] ), stream_loop_item( stream_type = 4, # mpeg2 audio stream type elementary_PID = 2065, element_info_descriptor_loop = [ ISO_639_language_descriptor(ISO_639_language_code="cat",Audio_type=0) ] ), stream_loop_item( stream_type = 5, # AIT stream type elementary_PID = ait1_pid, 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, ) pmt2 = program_map_section( program_number = avalpa2_service_id, PCR_PID = 2067, program_info_descriptor_loop = [], stream_loop = [ stream_loop_item( stream_type = 2, # mpeg2 video stream type elementary_PID = 2067, element_info_descriptor_loop = [] ), stream_loop_item( stream_type = 4, # mpeg2 audio stream type elementary_PID = 2068, element_info_descriptor_loop = [ ISO_639_language_descriptor(ISO_639_language_code="qaa",Audio_type=0) ] ), ], 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 = application_information_section( application_type = 0x0010, common_descriptor_loop = [ external_application_authorisation_descriptor( application_identifiers = [[organisationId_1,applicationId_1] , [organisationId_2,applicationId_2]], application_priority = [ 5 , 1 ] # 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_1, # this is a demo value, dvb.org should assign an unique value application_id = applicationId_1, 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, 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, ISO_639_language_code = "FRA" ), simple_application_location_descriptor(initial_path_bytes = appli_path), ] ), ], 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("./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') 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("./pmt1.sec", "wb") out.write(pmt1.pack()) out.close out = open("./pmt1.sec", "wb") # python flush bug out.close os.system('/usr/local/bin/sec2ts ' + str(avalpa1_pmt_pid) + ' < ./pmt1.sec > ./pmt1.ts') out = open("./pmt2.sec", "wb") out.write(pmt2.pack()) out.close out = open("./pmt2.sec", "wb") # python flush bug out.close os.system('/usr/local/bin/sec2ts ' + str(avalpa2_pmt_pid) + ' < ./pmt2.sec > ./pmt2.ts') out = open("./ait.sec", "wb") out.write(ait.pack()) out.close out = open("./ait.sec", "wb") # python flush bug out.close os.system('/usr/local/bin/sec2ts ' + str(ait1_pid) + ' < ./ait.sec > ./ait.ts')