1、 ETSI TS 102 817 V1.1.1 (2007-09)Technical Specification Digital Video Broadcasting (DVB);Digital Recording Extension toGlobally Executable Multimedia Home Platform (GEM)European Broadcasting Union Union Europenne de Radio-Tlvision EBUUER floppy3 ETSI ETSI TS 102 817 V1.1.1 (2007-09) 2 Reference DTS
2、/JTC-DVB-177 Keywords broadcasting, digital, dvb, tv, video ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Impo
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8、V1.1.1 (2007-09) 3 Contents Intellectual Property Rights5 Foreword.5 1 Scope 6 2 References 6 2.1 Normative references .6 3 Definitions and abbreviations.7 3.1 Definitions7 3.2 Abbreviations .8 4 Conventions8 5 General considerations .8 5.1 Purpose.8 5.2 Full conformance with the present document.9
9、5.3 General requirements .9 6 Recording and playback process 9 6.1 Managing scheduled recordings .9 6.2 The recording process 10 6.2.1 Segmented Recordings .11 6.2.1.1 Recording without interruption .11 6.2.1.2 Recording with resource interruption11 6.2.1.3 Recording with power interruption .12 6.2.
10、1.4 Recording with elementary stream change .13 6.2.1.5 Recording failure.13 6.3 Managing completed recordings 13 6.4 Playback of scheduled recordings 14 6.4.1 Process for playback .14 6.4.2 Events during playback.14 6.5 Timeshift 15 6.5.1 The recording process.15 6.5.2 Playback15 7 Recording and pl
11、ayback APIs 16 7.1 Recording and recording management .16 7.1.1 Overview (informative) 16 7.1.2 Details.17 7.2 Playback .17 7.2.1 Overview (informative) 17 7.2.2 Details.18 7.3 Other APIs19 7.3.1 Versioning.19 7.4 Permissions.20 7.4.1 Unsigned applications.20 7.4.2 Signed applications.20 8 Applicati
12、on signalling 20 8.1 Application recording description 20 9 Application model21 9.1 Application lifecycle and trick-mode playback21 10 Security.22 10.1 Introduction (informative)22 10.2 Permission request file .22 11 Minimum receiver requirements 22 ETSI ETSI TS 102 817 V1.1.1 (2007-09) 4 12 Registr
13、y of constants 23 12.1 System constants 23 Annex A (normative): Application recording description24 Annex B (informative): Responsibilities of GEM Recording Specifications.26 B.1 Required responsibilities 26 B.2 Optional responsibilities.27 Annex C (normative): External references; errata, clarifica
14、tions and exemptions .29 C.1 Java Media Framework 29 C.1.1 javax.media.Clock29 History 30 ETSI ETSI TS 102 817 V1.1.1 (2007-09) 5 Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential
15、 IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are
16、 available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI W
17、eb server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by Joint Technical Committee (JTC) Broadcast of the European Broadcasting Union (EBU), Comit Europen de Normalisation ELECtrotechnique (CENELEC) and the Eur
18、opean Telecommunications Standards Institute (ETSI). NOTE: The EBU/ETSI JTC Broadcast was established in 1990 to co-ordinate the drafting of standards in the specific field of broadcasting and related fields. Since 1995 the JTC Broadcast became a tripartite body by including in the Memorandum of Und
19、erstanding also CENELEC, which is responsible for the standardization of radio and television receivers. The EBU is a professional association of broadcasting organizations whose work includes the co-ordination of its members activities in the technical, legal, programme-making and programme-exchang
20、e domains. The EBU has active members in about 60 countries in the European broadcasting area; its headquarters is in Geneva. European Broadcasting Union CH-1218 GRAND SACONNEX (Geneva) Switzerland Tel: +41 22 717 21 11 Fax: +41 22 717 24 81 Founded in September 1993, the DVB Project is a market-led
21、 consortium of public and private sector organizations in the television industry. Its aim is to establish the framework for the introduction of MPEG-2 based digital television services. Now comprising over 200 organizations from more than 25 countries around the world, DVB fosters market-led system
22、s, which meet the real needs, and economic circumstances, of the consumer electronics and the broadcast industry. Founded in 1988 by members of the cable television industry, Cable Television Laboratories is a non-profit research and development consortium that is dedicated to pursuing new cable tel
23、ecommunications technologies and to helping its cable operator members integrate those advancements into their business objectives. Cable operators from around the world are members. CableLabs maintains web sites at ; ; ; www.cablenet.org; and . The specifications for the following Java packages are
24、 contained in archive tam0887_stubs.zip in ts_102817v010101p0.zip which accompanies the present document. org.ocap.shared.dvr; org.ocap.shared.dvr.navigation; org.ocap.shared.dvr.media.ETSI ETSI TS 102 817 V1.1.1 (2007-09) 6 1 Scope The present document defines a modular extension to GEM 1 which def
25、ines how the recording and playback of digital video (and audio) content is integrated with the GEM platform. The present document is firstly intended to be used by entities writing terminal specifications and/or standards that extend a GEM terminal specification with digital video (and audio) recor
26、ding and playback. Secondly it is intended for developers of GEM applications that wish to use digital video (and audio) recording and playback. Implementers should consult the publisher of specifications which reference GEM regarding conformance. NOTE: The present document defines the interfaces vi
27、sible to applications. Application developers should not assume that any related interface is available unless it is specifically listed. Terminal standards or implementations may have other interfaces present. One of the primary goals of the present document is to maximize the common aspects concer
28、ning the integration of digital video / audio recording between MHP and the various GEM terminal specifications. 2 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do
29、not apply. Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Ref
30、erenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. For online referenced documents, information sufficient to identify and locate the source shall be provided. Preferably, the primary source of the referenced doc
31、ument should be cited, in order to ensure traceability. Furthermore, the reference should, as far as possible, remain valid for the expected life of the document. The reference shall include the method of access to the referenced document and the full network address, with the same punctuation and u
32、se of upper case and lower case letters. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references The following referenced documents are indispensable for the application of the present document.
33、 For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 ETSI TS 102 819: “Digital Video Broadcasting (DVB); Globally Executable MHP (GEM)“. 2 ETSI ES 201 812: “Digital Video Broadcasting (
34、DVB); Multimedia Home Platform (MHP) Specification 1.0.3“. 3 ETSI TS 102 812: “Digital Video Broadcasting (DVB); Multimedia Home Platform (MHP) Specification 1.1.1“. NOTE: The preceding reference is currently only available as DVB Blue Book A068 Revision 1. ETSI ETSI TS 102 817 V1.1.1 (2007-09) 7 4
35、ETSI TS 102 816: “Digital Video Broadcasting (DVB); Personal Video Recorder (PVR)/ Personal Data Recorder (PDR) Extension to the Multimedia Home Platform“. 5 OpenCable Application Platform Specification ; OCAP Digital Video Recorder (DVR). 6 DAVIC 1.4.1 p9: “DAVIC 1.4.1 Specification Part 9 - Inform
36、ation Representation“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in TS 102 819 1 and the following apply: GEM recording specification: complete specification that extends the present document to create complete specifica
37、tion of how to integrate digital video (and audio) recording and playback with GEM terminal specifications GEM recording terminal: terminal or other device that conforms to a GEM recording specification normal play: play of video and / or audio content in the forwards direction at a rate of 1,0 NOTE
38、: This includes live content, live content which has been time-shifted and the content which is the result of a scheduled recording. recordable streams: streaming data within a piece of content which is to be recorded and played back NOTE: For GEM terminal specifications, these include streams ident
39、ified corresponding to clauses 7.2.1 (“Audio“) and 7.2.2 (“Video“) of GEM. GEM recording specifications may define other types of streams to be recordable streams for example subtitles or closed-captions. recording: generic term that refers to a laymans concept of a scheduled or recorded event, and
40、does not refer to an actual Java object NOTE: The term covers recordings which have been requested but not yet started, recordings which are in progress, recordings which have completed (successfully or not) and recordings which failed with no data ever being recorded. scheduled recordings: recordin
41、gs where the target of the recording is specified either by time, duration and channel or by an identifier that is resolved to time, duration and channel segmented recording: recording that is split into 1 or more pieces, i.e. segments. NOTE: A recording can be split for various reasons, e.g. power
42、was turned off and on, resources were lost and re-acquired. timeline: conceptual progress of time inherent in an item of content, which may be referred to by applications and delivered by a transmitted timeline timeshift recordings: recordings where the target of the recording is currently received
43、video and audio content transmitted time line: timeline included as part of a piece of content when that content is transmitted EXAMPLE: DSMCC Normal Play Time. trick mode or trick modes: generic term for the playback of video and/or audio at speeds other than 1,0 or directions other than forwards N
44、OTE: This includes fast and slow speed playback both forwards and backwards as well as pause. trick-mode aware application: application signalled as being aware of trick-mode playback, i.e. with the trick_mode_aware_flag set to “1“ ETSI ETSI TS 102 817 V1.1.1 (2007-09) 8 3.2 Abbreviations For the pu
45、rposes of the present document, the abbreviations given in in ES 201 812 2, TS 102 812 3 and the following apply: AIT Application Information Table API Application Program Interface DSMCC Digital Storage Media Command and Control DVB Digital Video Broadcasting DVR Digital Video Recorder GEM Globally
46、 Executable MHP JMF Java Media Framework MHP Multimedia Home Platform NPT Normal Play Time PDR Personal Digital Recorder PVR Personal Video Recorder SI Service Information 4 Conventions Where modifications to other documents are defined by quoting text from those other documents and describing how t
47、he present document considers that text to be changed, text that the present document adds into the original document is shown underlined and text that the present document removes from the original document is shown with strike-through. The term “application“ is used to cover both GEM applications
48、and applications which are not themselves GEM applications but which are compliant with the GEM terminal specification implemented by a particular GEM recording terminal. The present document uses the terminology that something “shall not be recorded“ or “should not be recorded“. This is a conventio
49、n for the sake of brevity and in all cases, implementations are allowed to record items that shall or should “not be recorded“ and discard them during playback. The term “shall not be recorded“ is simply shorter than “shall not be recorded, or if recorded, shall be discarded during playback“ and the latter is what is meant. The term “while the content to be recorded is available“ or similar is used a generic term due to the different ways in which GEM recording specifi
