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10.7.2 Data broadcast id descriptor
The data broadcast id descriptor is defined for use in the elementary stream information of the PMT. The descriptor identifies: • The transport format of the data broadcast whose "principal component" is on this elementary stream. The semantics of "principal component" is transport protocol specific. • The set of appli...
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10.7.2.1 Generic descriptor
The data broadcast id descriptor is defined in a generic form by EN 300 468 [4] (illustrated in table 70). Where no "id specific data" is provided the descriptor just identifies the "principal" component of a data broadcast. Table 70: Generic data broadcast id descriptor syntax No. of Bits Identifier Value data_broadca...
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10.7.2.2 MHP data broadcast id descriptor
When the data broadcast id is 0x00F0 or 0x00F1, (see table 90, "Registry of constant values") the syntax of the data broadcast id descriptor is as shown in table 71. This extends the generic descriptor with an optional list of application types for which autostart applications may exist within the data broadcast. This ...
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10.7.3 Application descriptor
Exactly one instance of the application descriptor shall be contained in every "application" (inner) descriptor loop of the AIT. Table 72: Application descriptor syntax No. of Bits Identifier Value application_descriptor() { descriptor_tag 8 uimsbf descriptor_length 8 uimsbf application_profiles_length 8 uimsbf for( i=...
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10.7.4 User information descriptors
The user information descriptors complement the "Application descriptor" by providing information suitable for presentation to the user (where the "Application descriptor" provides technical information for automatic use by the receiver). These descriptors are defined for use in the application loop of the AIT. ETSI ET...
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10.7.4.1 Application name descriptor
Exactly one instance of this descriptor shall be included in the application information of an application. The application name shall distinguish the application and shall be informative to the user. Table 73: Application name descriptor syntax No. of Bits Identifier Value application_name_descriptor() { descriptor_ta...
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10.7.4.2 Application icons descriptor
GEM [1], clause 10.4.3.2 is included in the present document.
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10.7.5 External application authorization descriptor
The "common" (first) descriptor loop of the Application Information Table may contain zero or more external_application_authorization_descriptors. Each descriptor contains information about external applications that are allowed to continue to run with the applications listed in this Application Information Table sub- ...
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10.7.6 Graphics constraints descriptor
GEM [1], clause 10.4.3.3 is included in the present document with the following modifications: This descriptor may be present either in the inner (application) loop of an AIT in which case it applies to only that application or the outer (common loop) of an AIT in which case it applies to all applications signalled in ...
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10.8 Transport protocol descriptors
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10.8.1 Transport protocol descriptor
The transport protocol descriptor identifies the transport protocol associated with a service component and possibly provides protocol dependent information. The descriptor may be used in either the "common" (first) descriptor loop or the "application" (inner) descriptors loop. When in the "common" loop it applies to a...
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10.8.1.1 Transport via OC
When the protocol ID is 0x0001 the selector bytes in the Transport protocol descriptor shall be as shown in table 78. Table 78: Syntax of selector bytes for OC transport Syntax Bits Mnemonic remote_connection 1 bslbf reserved_future_use 7 bslbf if( remote_connection == "1" ) { original_network_id 16 uimsbf transport_st...
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10.8.1.2 Transport via IP
When the protocol ID is 0x0002 the selector bytes in the Transport protocol descriptor shall be as shown in table 79. This structure includes two important components of the data_broadcast_descriptor defined in EN 301 192 [5]. It provides all the information necessary for the MHP to acquire applications and application...
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10.8.1.3 Transport via interaction channel
When the protocol ID is 0x0003 the selector bytes in the Transport protocol descriptor shall be as shown in table 80, "Syntax of selector bytes for interaction transport". This allows encoding of a number of URLs. For efficiency when encoding possibly many similar URLs the encoding divides the URL into a shared base pa...
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10.8.2 IP signalling descriptor
The IP signalling descriptor is defined for use either in the "common" or in the "application" loop of the AIT. This descriptor indicates the identification of the organization providing the IP multicast streams used by all applications (when present in the "common" loop) or by the particular signalled application (whe...
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10.8.3 Pre-fetch signalling
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10.8.3.1 Introduction
This signalling is defined to enable implementations to start fetching files that will be required during the early part of an application's life. Later in an applications' life it can actively request file pre-fetching using API mechanisms. Descriptors in this clause do not have a relation to the API-based pre-fetchin...
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10.8.3.2 Pre-fetch descriptor
Zero or one pre-fetch descriptors can be included in the "application" (inner) descriptor loop of the AIT. It is defined for use where the protocol_id of the transport is 0x0001 (MHP Object Carousel). Each descriptor is associated with a specific Transport protocol descriptor via the transport_protocol_label. MHP termi...
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10.8.3.3 DII location descriptor
For each application zero or one DII location descriptors can be provided. It can be located in either the "common" (first) or "application" (inner) descriptor loop of the AIT. It is defined for use where the protocol_id of the transport is 0x0001 (MHP Object Carousel). Each descriptor is associated with a specific Tra...
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10.9 DVB-J specific descriptors
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10.9.1 DVB-J application descriptor
One instance of this descriptor shall be contained in the "application" (inner) descriptor loop of the AIT for each DVB-J application. It provides start-up parameter information. Table 84: DVB-J application descriptor syntax No. of Bits Identifier Value dvb_j_application_descriptor(){ descriptor_tag 8 uimsbf descriptor...
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10.9.2 DVB-J application location descriptor
One instance of this descriptor shall be contained in the "application" (inner) descriptor loop of the AIT for each DVB-J application. It provides various items of path information to allow the DVB-J application to be found and then operated. Table 85: DVB-J application location descriptor syntax No. of Bits Identifier...
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10.10.2.1 Example
The following example describes the usage of the DVB-HTML application location descriptor. An application author designs an HTML application in the following manner: • The application data is distributed among several directories, let say an "image" directory and a "main" directory. • The application entry point is an ...
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10.10.2.2 Application Entry Point
From the application author's point of view, the application entry point is specified by the path "main/index.htm". This path is stored in the initial_path_bytes string of the location descriptor. If the broadcaster inserts this application in a file system sub-directory called "application", the physical_root_bytes co...
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10.12.2.1 Semantics of the data broadcast descriptor
The semantics for the following elements of the syntax are defined in EN 300 468 [4]: descriptor_tag: For this 8-bit field see EN 300 468 [4]. descriptor_length: For this 8-bit field see EN 300 468 [4]. data_broadcast_id: For this 16-bit field see EN 300 468 [4]. This field has the value 0x00F2 (see table 90) when anno...
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10.14.1.1 Stored broadcast service related applications
For stored broadcast service related applications the broadcast AIT information shall be used when launching the stored application. So, little information from the AIT needs to be stored with the application.
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10.14.1.2 Stored stand-alone applications
For stored stand-alone applications, the AIT information used when launching the application shall come from a stored representation of the AIT. While a stored service is being presented in a service context, the following apply: • The applications database shall be populated with information from this stored represent...
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10.14.3.1 Description
GEM [1], clause 10.8.3.1 is included in the present document.
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10.14.3.2 Application Description File name and location
GEM [1], clause 10.8.3.2 is included in the present document with the following notes and modifications. The application description file shall be located in the base directory of a DVB-J application (as signalled in the dvb-j application location descriptor) or the physical root of a DVB-HTML application (as signalled...
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10.14.3.3 Syntax
GEM [1], clause 10.8.3.3 is included in the present document.
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10.14.3.4 Semantics
GEM [1], clause 10.8.3.4 is included in the present document with the following notes and modifications. version: A decimal integer denoting the version number of this application. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 181 Must not contain leading zeros (unless it is "0"). Must match the version number signalled in the...
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11 DVB-J Platform
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11.1 The Java Platform
GEM [1], clause 11.1 is included in the present document.
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11.2 General issues
GEM [1], clause 11.2 is included in the present document. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 186
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11.3 Fundamental DVB-J APIs
GEM [1], clause 11.3 is included in the present document.
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11.4 Presentation APIs
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11.4.1 Graphical User Interface API
GEM [1], clause 11.4.1 is included in the present document, with the following notes and modifications. • GEM [1], clause 11.4.1.2 specifies that the packages org.havi.ui and org.havi.ui.event defined in HAVi [21] shall be supported with some exceptions. For MHP terminals, all HAVi UI widgets and supporting classes are...
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11.4.2 Streamed Media API
GEM [1], clause 11.4.2 is included in the present document, with the following notes and modifications. The text in GEM [1], clause 11.4.2.3 item b defines a default for service component presentation, then allows for it to be overridden: • The streams which are first in the network signalling information (i.e. in the ...
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11.5 Data Access APIs
GEM [1], clause 11.5 is included in the present document, with the following notes and modifications.
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11.5.1 Broadcast Transport Protocol Access API
GEM [1], clause 11.5.1 is included in the present document, with the following notes and modifications. The reference to annex P is to be read as referring to annex P of the present document. Relative file names used to access objects in the carousel shall be taken as being relative to the base directory indicated in c...
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11.6 Service Information and Selection APIs
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11.6.1 DVB Service Information API
The DVB specific SI API is defined in annex M, "SI Access API".
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11.6.2 Service Selection API
GEM [1], clause 11.6.2 is included in the present document.
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11.6.3 Tuning API
GEM [1], clause 11.6.3 is included in the present document, with the following notes and modifications. The reference to GEM [1], clause 11.7.6 is to be read as referring to clause 11.7.6 of the present document. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 188
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11.6.4 Conditional Access API
The conditional access API is defined in annex I of DAVIC 1.4.1p9 [3]. The following classes are not supported as defined in clause 11.2.2 - CA1Module, CA0Module, CA1Message, CA0Message, CA1ModuleResponseEvent and CA0ModuleResponseEvent. Physical CI modules or embedded systems following the CI protocol can produce MMI ...
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11.6.5 Protocol Independent SI API
GEM [1], clause 11.6.5 is included in the present document.
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11.6.6 Service discovery and selection for IPTV
GEM [1], clause 11.6.6 is included in the present document.
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11.6.7 Integration between protocol independent SI API and TV-Anytime
GEM [1], clause 11.6.7 is included in the present document.
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11.7 Common Infrastructure APIs
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11.7.1 APIs to support DVB-J application lifecycle
GEM [1], clause 11.7.1 is included in the present document, with the following notes and modifications. In clause 11.7.1.1, MHP requires that a specific text encoding be used: Each entry in the loop of that descriptor shall be presented as one string in the array returned by this method, interpreted using the encoding ...
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11.7.2 Application discovery and launching APIs
This API is formed of the org.dvb.application package defined in annex S "(normative): Application Listing and Launching". The following properties are defined for use with the method AppAttributes.getProperty. Table 98: Application attribute properties Property name (note) Return dvb.j.location.base Returns String con...
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11.7.3 Inter-Application and Inter-Xlet communication API
GEM [1], clause 11.7.3 is included in the present document.
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11.7.4 Basic MPEG Concepts
GEM [1], clause 11.7.4 is included in the present document, with the following notes and modifications. The following additional classes are required by the present document: • DvbElementaryStream; • DvbService; • DvbTransportStream.
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11.7.5 Resource Notification
GEM [1], clause 11.7.5 is included in the present document. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 191
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11.7.6 Content Referencing
This API is formed of the classes found in section H.4 of annex H of DAVIC 1.4.1p9 [3] - the Locator and DvbLocator classes. It also includes the javax.tv.locator package as defined in Java TV [51]. It also includes the org.dvb.locator.package defined in annex AL. The signature of the org.davic.net.Locator class will b...
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11.7.7 Common Error Reporting
GEM [1], clause 11.7.7 is included in the present document.
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11.7.8 Plug-in APIs
GEM [1], clause 11.7.8 is included in the present document.
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11.7.9 Provider API
GEM [1], clause 11.7.9 is included in the present document. 11.7.10 Content referencing for IPTV GEM [1], clause 11.7.10 is included in the present document. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 192 11.7.11 TV-Anytime content referencing and metadata GEM [1], clause 11.7.11 is included in the present document.
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11.8 Security
GEM [1], clause 11.8 is included in the present document, with the following notes and modifications.
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11.8.1 Basic Security
GEM [1], clause 11.8.1 is included in the present document.
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11.8.2 APIs for return channel security
GEM [1], clause 11.8.2 is included in the present document, with the following notes and modifications. Cipher suites listed in GEM [1], table 56, "Profile of cipher suites that implementations are required to support" shall have the name found in the "cipher suite" column of that table with "TLS_" replaced by "SSL_". ...
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11.8.3 Additional permissions classes
GEM [1], clause 11.8.3 is included in the present document.
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11.8.4 General security issues
GEM [1], clause 11.8.4 is included in the present document.
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11.8.5 Cryptographic API
GEM [1], clause 11.8.5 is included in the present document.
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11.8.6 DVB Extensions for Cryptography
GEM [1], clause 11.8.6 is included in the present document.
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11.9 Other APIs
GEM [1], clause 11.9 is included in the present document. 11.10 Java permissions GEM [1], clause 11.10 is included in the present document, with the following notes and modifications. In MHP, the only mechanism by which an application may be trusted, and thus request additional permissions, is for that application to b...
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11.11.4.1 MPEG/DVB specific service
GEM [1], clause 11.11.4.1 is included in the present document, with the following notes and modifications. The term "GEM service" is to be interpreted as meaning "DVB service". "GEM locator" is to be interpreted as meaning "DVB locator". The following methods are required by the present document: • org.davic.net.ca.CAM...
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11.11.4.2 Generic service
GEM [1], clause 11.11.4.1 is included in the present document, with the following notes and modifications. The term "GEM specific service" is to be interpreted as meaning "DVB service".
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11.11.4.3 Content referencing for IPTV
GEM [1], clause 11.11.4.3 is included in the present document.
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11.11.4.4 Stored services
GEM [1], clause 11.11.4.4 is included in the present document.
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11.11.4.5 Internet client services
The following methods used in the present document shall accept or return instances of Objects which describe an internet client application. • org.dvb.internet.InternetClient.getServiceContentLocators; • javax.tv.service.Service.getLocator - when the Service is an InternetClientService. 11.11.5 DVB event GEM [1], clau...
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11.13.1.1 Framework
The required document object model APIs are defined in the following: • From Document Object Model (DOM) Level 2 Core Specification [34], that part of annex D, "Java Language Binding" corresponding to the "Fundamental Interfaces" as specified in section 1.2 of that specification. • From Document Object Model (DOM) Leve...
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11.13.1.2 DVB defined extensions
The DVB defined DOM extensions are defined in annex AD "(normative): Support for DVB-HTML" of the present document see also clause AD.1, "Java bindings to DVB extensions".
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11.13.1.3 Read Only Access to DOM
Where a DVB-J application only has or requests read-only access to the DOM, calling methods in the DOM APIs whose result would be to modify the DOM shall result in an org.w3c.dom.DOMException with exception code NO_MODIFICATION_ALLOWED_ERR being thrown. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 197 11.13.2 Embedded Xlets i...
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12 Security
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12.1 Introduction
GEM [1], clause 12. is included in the present document, with the following comments and modifications. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 198
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12.1.1 Overview of the security framework for applications
GEM [1], clause 12.1.1 is included in the present document, with the following comments and modifications. The last paragraph of this clause is not included in the present document, and is replaced by the following: Applications that are signed shall be identified with an application_id from the signed applications ran...
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12.1.2 Overview of return channel security
GEM [1], clause 12.1.2 is included in the present document.
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12.1.3 MHP application signing framework
In MHP, the only mechanism by which an application may be trusted, and thus request additional permissions, is for that application to be signed.
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12.2 Authentication of applications
GEM [1], clause 12.2 is included in the present document.
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12.3 Message transport
GEM [1], clause 12.3 is included in the present document.
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12.4 Detail of application authentication messages
GEM [1], clause 12.4 is included in the present document with the following modification: • NOTE 2: Authorizing an application authentication mechanism other than MHP's, does not apply to the present document.
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12.5 Profile of X.509 certificates for authentication of applications
GEM [1], clause 12.5 is included in the present document.
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12.6 Security policy for applications
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12.6.1 General principles
GEM [1], clause 12.6.1 is included in the present document with the following modifications: • In the present document, only MHP codesigning mechanisms apply; alternatives are not permitted.
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12.6.2 Permission request file
GEM [1], clause 12.6.2 is included in the present document, with the following notes and modifications. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 199
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12.6.2.0 General
GEM [1], clause 12.6.2.0 does not apply to the present document.
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12.6.2.1 File encoding
GEM [1], clause 12.6.2.1 is included in the present document.
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12.6.2.2 File integrity
GEM [1], clause 12.6.2.2 is included in the present document.
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12.6.2.3 Example
GEM [1], clause 12.6.2.3 is included in the present document.
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12.6.2.4 Permission request file name and location
GEM [1], clause 12.6.4 is included in the present document, with the following notes and modifications. Table 44 in GEM [1], clause 12.6.2.4, "Application names for different application types," contains a reference to the name initial_class_byte. For the present document, this is to be interpreted as referring to init...
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12.6.2.5 Permission request file
GEM [1], clause 12.6.2.5 is included in the present document.
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12.6.2.6 Credentials
GEM [1], clause 12.6.2.6 is included in the present document, with the following modifications: • Support for Credentials is required in the present document. • Functional equivalents are not permitted. • Replace the sentence "The certification chain authenticates the grantor's certificate. This chain shall derive from...
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12.6.2.7 File Access
GEM [1], clause 12.6.2.7 is included in the present document.
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12.6.2.8 CA API
GEM [1], clause 12.6.2.8 is included in the present document, with the following modifications: • GEM [1], clause 12.6.2.8.0, "GEM introduction," is not included in the present document. ETSI ETSI TS 102 727 V1.1.1 (2010-01) 200
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12.6.2.9 Application lifecycle control policy
GEM [1], clause 12.6.2.9 is included in the present document.
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12.6.2.10 Return channel access policy
GEM [1], clause 12.6.2.10 is included in the present document.
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12.6.2.11 Tuning access policy
GEM [1], clause 12.6.2.11 is included in the present document.
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12.6.2.12 Service selection policy
GEM [1], clause 12.6.2.12 is included in the present document.
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12.6.2.13 Media API access policy
GEM [1], clause 12.6.2.13 is included in the present document.