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1、 Reference number ISO/IEC 21000-7:2004(E) ISO/IEC 2004 INTERNATIONAL STANDARD ISO/IEC 21000-7 First edition 2004-10-15 Information technology Multimedia framework (MPEG-21) Part 7: Digital Item Adaptation Technologies de linformation Cadre multimdia (MPEG-21) Partie 7: Adaptation darticle numrique C
2、opyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21000-7:2004(E) PDF disclaimer This PDF file may cont
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5、ameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO/IEC 2004 All rights reserved. Unless ot
6、herwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyri
7、ght office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO/IEC 2004 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP M
8、onitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21000-7:2004(E) ISO/IEC 2004 All rights reserved iii Contents Page Forewordviii Introduction .ix 1 Scope1 1.1 General.1 1.2 Organization of the document.1 1.3 Ov
9、erview of Digital Item Adaptation .1 1.4 Overview of Digital Item Adaptation tools2 1.5 Relation between Digital Item Adaptation and other parts of ISO/IEC 21000.3 1.6 Relation between Digital Item Adaptation and ISO/IEC 15938 .4 2 Normative references .4 3 Terms, definitions, symbols, and abbreviat
10、ed terms5 3.1 Terms and definitions.5 3.1.1 General terms and definitions .5 3.1.2 DIA-specific terms and definition6 3.2 Symbols and abbreviated terms7 3.3 Schema documents 8 3.4 Use of prefixes in this specification8 3.5 URI fragment identifiers for XML documents.9 3.5.1 Syntax of URI fragment ide
11、ntifiers9 3.5.2 URI fragment identifiers examples9 4 Schema tools.10 4.1 Introduction .10 4.2 Schema wrapper .10 4.3 Base types .10 4.3.1 Introduction .10 4.3.2 Base types syntax.11 4.3.3 Base types semantics.11 4.4 Description metadata11 4.4.1 Introduction .11 4.4.2 Description metadata syntax.12 4
12、.4.3 Description metadata semantics.12 4.5 Root elements .12 4.5.1 Introduction .12 4.5.2 Root element syntax.13 4.5.3 Root element semantics.13 4.5.4 Root element examples14 4.6 Reference.15 4.6.1 Introduction .15 4.6.2 Reference syntax 15 4.6.3 Reference semantics15 4.6.4 Reference examples .15 5
13、Low-level datatypes16 5.1 Introduction .16 5.2 Unsigned integer datatypes.16 5.2.1 Introduction .16 5.2.2 Unsigned integer datatypes syntax 16 5.2.3 Unsigned integer datatypes semantics 18 5.3 Common datatypes.18 5.3.1 Introduction .18 Copyright International Organization for Standardization Provide
14、d by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 21000-7:2004(E) iv ISO/IEC 2004 All rights reserved 5.3.2 Single value datatypes19 5.3.3 Vector datatypes20 5.3.4 Ma
15、trix datatypes23 5.4 Base stack function.25 5.4.1 Introduction25 5.4.2 Base stack function syntax26 5.4.3 Base stack function semantics27 5.5 Argument types and extensions27 5.5.1 Introduction27 5.5.2 Argument types and extensions syntax .28 5.5.3 Argument types and extensions semantics.30 6 Usage e
16、nvironment description tools.33 6.1 Introduction33 6.2 Schema wrapper33 6.3 Usage environment.34 6.3.1 Introduction34 6.3.2 Usage environment syntax.34 6.3.3 Usage environment semantics 35 6.4 User characteristics35 6.4.1 Introduction35 6.4.2 Users.35 6.4.3 User.36 6.4.4 UserInfo37 6.4.5 UsagePrefer
17、ences.38 6.4.6 UsageHistory .39 6.4.7 AudioPresentationPreferences41 6.4.8 DisplayPresentationPreferences.47 6.4.9 ColorPreference.48 6.4.10 StereoscopicVideoConversion51 6.4.11 GraphicsPresentationPreferences 53 6.4.12 ConversionPreference54 6.4.13 PresentationPriorityPreference .59 6.4.14 FocusOfA
18、ttention63 6.4.15 AuditoryImpairment 68 6.4.16 VisualImpairment.70 6.4.17 ColorVisionDeficiency 73 6.4.18 MobilityCharacteristics.76 6.4.19 Destination.80 6.5 Terminal capabilities.81 6.5.1 Introduction81 6.5.2 Terminals82 6.5.3 Terminal82 6.5.4 CodecCapabilities .83 6.5.5 CodecCapability 84 6.5.6 C
19、odecParameter87 6.5.7 Displays89 6.5.8 Display90 6.5.9 DisplayCapabilities91 6.5.10 AudioOutputs.94 6.5.11 AudioOutput.95 6.5.12 AudioOutputCapabilities 96 6.5.13 UserInteractionInputs .97 6.5.14 UserInteractionInput .98 6.5.15 DeviceClass .102 6.5.16 PowerCharacteristics102 6.5.17 Storages .103 6.5
20、.18 Storage .104 6.5.19 StorageCharacteristics.105 6.5.20 DataIOs.106 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or networking permitted without license from
21、IHS -,-,- ISO/IEC 21000-7:2004(E) ISO/IEC 2004 All rights reserved v 6.5.21 DataIO.106 6.5.22 DataIOCharacteristics.107 6.5.23 Benchmarks.108 6.5.24 Benchmark.109 6.5.25 CPUBenchmark.110 6.5.26 ThreeDBenchmark 111 6.5.27 IPMPTools111 6.5.28 Terminal capabilities examples.113 6.6 Network characterist
22、ics115 6.6.1 Introduction .115 6.6.2 Networks116 6.6.3 Network116 6.6.4 NetworkCapability.117 6.6.5 NetworkCondition.118 6.6.6 Network characteristics example120 6.7 Natural environment characteristics.120 6.7.1 Introduction .120 6.7.2 NaturalEnvironments121 6.7.3 NaturalEnvironment121 6.7.4 Locatio
23、n .122 6.7.5 Time123 6.7.6 AudioEnvironment124 6.7.7 IlluminationCharacteristics126 7 Bitstream syntax description link .128 7.1 Introduction .128 7.2 BSDLink syntax.128 7.3 BSDLink semantics.130 7.4 BSDLink example131 8 Bitstream Syntax Description131 8.1 Introduction .131 8.1.1 Introduction to BSD
24、-based adaptation.131 8.1.2 Adaptation architecture132 8.1.3 BSDL and gBS Schema133 8.1.4 Bitstream Syntax Description transformation .133 8.1.5 Multi-step adaptation133 8.1.6 Organization of this clause134 8.2 Bitstream Syntax Description Language134 8.2.1 Overview 134 8.2.2 Schema hierarchy.136 8.
25、3 Bitstream generation: BSDL-1 and gBS Schema 137 8.3.1 BSDL-1 .137 8.3.2 generic Bitstream Syntax Schema144 8.4 BS Description generation: BSDL-2155 8.4.1 Introduction .155 8.4.2 Schema for BSDL-2 extensions.157 8.4.3 Constraints on the syntax of BSDL-2 extensions159 8.4.4 Semantics of BSDL-2 struc
26、tural extensions160 8.4.5 Semantics of BSDL-2 datatypes extensions161 8.4.6 BSDL-2 validity of BS Schemas 161 8.4.7 Run-time constraints during BS Description generation .162 8.4.8 BS Description generation with BintoBSD.162 8.4.9 Examples163 9 Terminal and network quality of service 167 9.1 Introdu
27、ction .167 9.2 Schema wrapper .167 9.3 AdaptationQoS168 9.3.1 Introduction .168 9.3.2 AdaptationQoS syntax169 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or ne
28、tworking permitted without license from IHS -,-,- ISO/IEC 21000-7:2004(E) vi ISO/IEC 2004 All rights reserved 9.3.3 AdaptationQoS semantics169 9.3.4 AdaptationQoS example.169 9.4 AdaptationQoS modules 170 9.4.1 Introduction170 9.4.2 BaseModule syntax.170 9.4.3 BaseModule semantics.170 9.5 IOPin .170
29、 9.5.1 Introduction170 9.5.2 IOPin syntax.170 9.5.3 IOPin semantics.171 9.6 UtilityFunction .171 9.6.1 Introduction171 9.6.2 UtilityFunction syntax.172 9.6.3 UtilityFunction semantics.172 9.6.4 UtilityRank syntax .173 9.6.5 UtilityRank semantics.174 9.6.6 UtilityFunction example174 9.7 Look-up table
30、.176 9.7.1 Introduction176 9.7.2 LookUpTable syntax .176 9.7.3 LookUpTable semantics.176 9.7.4 Axis syntax.177 9.7.5 Axis semantics 177 9.7.6 Content syntax.178 9.7.7 Content semantics 178 9.7.8 LookUpTable example 179 9.8 Stack function180 9.8.1 Introduction180 9.8.2 StackFunction syntax .180 9.8.3
31、 StackFunction semantics.180 9.8.4 StackFunction example 180 9.9 Switch mechanism182 9.9.1 Introduction182 9.9.2 BaseSwitchModule syntax .182 9.9.3 BaseSwitchModule semantics.183 9.9.4 UtilityFunctionSwitch syntax.183 9.9.5 UtilityFunctionSwitch semantics.183 9.9.6 LookUpTableSwitch syntax184 9.9.7
32、LookUpTableSwitch semantics .184 9.9.8 StackFunctionSwitch syntax185 9.9.9 StackFunctionSwitch semantics .185 10 Universal constraints description tools185 10.1 Introduction185 10.2 Universal constraints description syntax.187 10.3 Universal constraints description semantics.188 10.4 Universal const
33、raints description examples190 11 Metadata adaptability195 11.1 Introduction195 11.2 MetadataAdaptation syntax195 11.3 MetadataAdaptation semantics .197 11.4 MetadataAdaptation examples.199 12 Session mobility tools 205 12.1 Introduction205 12.2 Format of a DI for session mobility.206 12.3 SessionMo
34、bility syntax.207 12.4 SessionMobility semantics 208 12.5 Reconstructing a session.209 12.6 Session transfer example.210 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reprodu
35、ction or networking permitted without license from IHS -,-,- ISO/IEC 21000-7:2004(E) ISO/IEC 2004 All rights reserved vii 13 DIA configuration tools 211 13.1 Introduction .211 13.2 DIAConfiguration syntax211 13.3 DIAConfiguration semantics212 Annex A (normative) Classification Schemes.214 A.1 Introd
36、uction .214 A.2 Classification Schemes214 A.2.1 ThreeDBenchmarkCS.214 A.2.2 AdaptationQoSCS.215 A.2.3 AQoSRoundingMethodCS248 A.2.4 CPUBenchmarkCS248 A.2.5 DeviceClassCS249 A.2.6 GraphicsCodingFormatCS.250 A.2.7 InvariantDimensionCS251 A.2.8 KeyInputCS251 A.2.9 LocationTypeCS251 A.2.10 MediaInformat
37、ionCS.252 A.2.11 PlaceTypeCS .255 A.2.12 RenderingFormatCS .259 A.2.13 SceneCodingFormatCS260 A.2.14 SegmentDecompositionInfoCS .262 A.2.15 StackFunctionOperatorCS.264 Annex B (informative) Usage of the BSDLink tool270 B.1 Introduction .270 B.2 Overview of the adaptation architecture 270 B.3 Example
38、 instances273 B.3.1 Introduction .273 B.3.2 Usage environment description 274 B.3.3 BSDLink .275 B.3.4 Steering description .276 B.3.5 Further constraining the usage and usage environment of a Digital Item .278 B.3.6 Bitstream Syntax Description282 B.3.7 BSD transformation 297 B.3.8 Resources309 Ann
39、ex C (informative) Usage of DIA Configuration 310 C.1 Example 1.310 C.2 Example 2.313 C.3 Example 3.314 Annex D (informative) Address corrections in (g)BS Descriptions for multi-step adaptations.316 Annex E (informative) UCD-based adaptation decision making engine.317 E.1 Introduction .317 E.2 ADTE
40、architectures.317 E.3 UCD based ADTE processing model 318 Annex F (informative) Patent Statements 321 Annex G (informative) Schema322 G.1 Schema definition for schema tools (clause 4) .322 G.2 Schema definition for usage environment descriptions tools (clause 6) .323 G.3 Schema definition for Termin
41、al and network quality of service tools (clause 8).349 Bibliography .355 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=HP Monitoring/1111111164 Not for Resale, 12/04/2007 20:32:40 MSTNo reproduction or networking permitted without license fr
42、om IHS -,-,- ISO/IEC 21000-7:2004(E) viii ISO/IEC 2004 All rights reserved Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or I
43、EC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, gov
44、ernmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives,
45、Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the nation
46、al bodies casting a vote. The International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) draw attention to the fact that it is claimed that compliance with this document may involve the use of patents. The ISO and IEC take no position concerning the evid
47、ence, validity and scope of these patent rights. The holders of these patent rights have assured the ISO and IEC that they are willing to negotiate licences under reasonable and non-discriminatory terms and conditions with applicants throughout the world. In this respect, the statements of the holde
48、rs of these patent rights is registered with the ISO and IEC. Information may be obtained from the companies listed in Annex F. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than those identified in Annex F. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 21000-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hy