INTERNATIONAL ISO/IEC STANDARD 21000-7 Second edition 2007-12-15 Information technology Multimedia framework (MPEG-21)一 Part 7: Digital Item Adaptation Technologies de Il'information- Cadre multimédia (MPEG-21) Partie 7: Adaptation d'article numerique Reference number ISO/IEC 21000-7:2007(E) ISo IEC @ISO/IEC2007 y IHS under lic Not for Resale ISO/IEC 21000-7:2007(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters 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 COPYRIGHTPROTECTEDDOCUMENT ISO/IEC2007 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56. CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland @ ISO/IEC 2007 - All rights reserved ed without license from IHS Not for Resale ISO/IEC 21000-7:2007(E) Contents Page Foreword.. vi Introduction. vili 1 Scope ... 1.1 1.2 Organization of the document... 1.3 Overview of Digital Item Adaptation .. 1.4 Overview of Digital Item Adaptation tools... 1.5 Relation between Digital Item Adaptation and other parts of ISO/IEC 21000. 1.6 Relation between Digital Item Adaptation and ISO/IEC 15938 .... 2 Normative references. 3 Terms, definitions, symbols, and abbreviated terms. 3.1 Terms and definitions.. 3.2 Symbols and abbreviated terms ... 3.3 3.4 Use of prefixes in this specification ... 9 3.5 URI fragment identifiers for XML documents .... 10 4 Schema tools.. 11 4.1 Introduction.... 11 4.2 Schemawrapper. 12 4.3 Base types.... 12 4.4 Description metadata ... 13 4.5 14 4.6 Reference. 1.7 5 Low-level datatypes. 18 5.1 Introduction.. 18 5.2 Common datatypes.. 18 5.3 Base stack function...... 5.4 Argument types and extensions .... .28 5.5 Conversion descriptions... 34 6 Usage environment description tools 37 6.1 Introduction.... 6.2 Schema wrapper. 6.3 Usage environment.. 37 6.4 User characteristics.... 38 6.5 Terminal capabilities .... 85 6.6 Network characteristics 124 6.7 Natural environment characteristics ..... 129 7 Conversion tools. 137 7.1 Introduction......... 137 7.2 Bitstream syntax description link. 7.3 Conversion link... 141 8 Bitstream Syntax Description... .144 8.1 Introduction.. 144 8.2 Bitstream Syntax Description Language .... 147 8.3 Bitstream generation: BSDL-1 and gBS Schema 149 8.4 BS Description generation: BSDL-2 161 8.5 Media resource streaming instructions. 161 8.6 XML streaming instructions . 8.7 Properties stylesheet. 178 Copyright Intematinal Organzatinfor standadztion All rights reserved ili ted withoutlicensefromIHS Not for Resale ISO/IEC 21000-7:2007(E) 9 Terminal and network quality of service 9.1 Introduction... ..185 9.2 Schema wrapper .. .185 9.3 185 9.4 AdaptationQoS modules 9.5 IoPin.... .187 9.6 UtilityFunction .... 189 9.7 Lookup table... 9.8 Stack function. ..197 9.9 Switch mechanism.. 199 9.10 CrossConversionQoS.. 10 Universal constraints description tools ..207 10.1 ................................................................ 10.2 Universal constraints description syntax... ..209 10.3 Universal constraints description semantics 210 10.4 Universal constraints description examples..... 212 11 Metadata adaptability......... 11.1 Introduction ... ..217 11.