CAN CSA-ISO IEC 21000-2A-2013 Information technology - Multimedia framework (MPEG-21) - Part 2 Digital Item Declaration.pdf

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1、Information technology Multimedia framework (MPEG-21) Part 2: Digital Item Declaration AMENDMENT 1: Presentation of digital itemAmendment 1:2013 (IDT) toNational Standard of CanadaCAN/CSA-ISO/IEC-21000-2-06(ISO/IEC 21000-2:2005, IDT)NOT FOR RESALE. / PUBLICATION NON DESTINE LA REVENTE.Standards Upda

2、te ServiceAmendment 1:2013 toCAN/CSA-ISO/IEC-21000-2-06January 2013Title: Information technology Multimedia framework (MPEG-21) Part 2: Digital Item Declaration AMENDMENT 1: Presentation of digital itemPagination:6 pages (iii preliminary and 3 text)To register for e-mail notification about any updat

3、es to this publicationgo to shop.csa.caclick on CSA Update ServiceThe List ID that you will need to register for updates to this publication is 2422263.If you require assistance, please e-mail techsupportcsagroup.org or call 416-747-2233.Visit CSA Groups policy on privacy at csagroup.org/legal to fi

4、nd out how we protect your personal information.Reference numberISO/IEC 21000-2:2005/Amd.1:2012(E)ISO/IEC 2012INTERNATIONAL STANDARD ISO/IEC21000-2Second edition2005-10-01AMENDMENT 12012-03-15Information technology Multimedia framework (MPEG-21) Part 2: Digital Item Declaration AMENDMENT 1: Presenta

5、tion of digital itemTechnologies de linformation Cadre multimdia (MPEG-21) Partie 2: Dclaration darticle numrique AMENDEMENT 1: Prsentation darticle numrique ISO/IEC 21000-2:2005/Amd.1:2012(E) COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2012 All rights reserved. Unless otherwise specified, no part of this

6、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 copyright office Case postale 56 CH-1211

7、Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC 2012 All rights reservedAmendment 1:2013 to CAN/CSA-21000-2-06ISO/IEC 21000-2:2005/Amd.1:2012(E) ISO/IEC 2012 All rights reserved iiiForeword ISO (the International Organization for Standardizat

8、ion) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to

9、deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and

10、 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, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft International Standards adopted by t

11、he joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

12、rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 1 to ISO/IEC 21000-2:2005 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. A

13、mendment 1:2013 to CAN/CSA-21000-2-06Amendment 1:2013 to CAN/CSA-21000-2-06ISO/IEC 21000-2:2005/Amd.1:2012(E) ISO/IEC 2012 All rights reserved 1Information technology Multimedia framework (MPEG-21) Part 2: Digital Item Declaration AMENDMENT 1: Presentation of digital item After 6.2.15, add the follo

14、wing subclause: 6.2.16 presentation Defines a specific Descriptor named as presentation in the Digital Item Declaration Model. A presentation contains the presentation information. Typically it is a scene representation language that can describe the structured information. It can be the well-formed

15、 XML or just a pointer which points to a remote fragment containing the presentation information. The presentation information can reference the metadata from a Digital Item. EXAMPLE It can reference the metadata from current Digital Item or a remote Digital Item using mpeg-pmsi() schema defined in

16、ISO/IEC 14496-20:2008/Amd.3:2010. NOTE It should be noticed that the information in the parent Item may be modified when it employs the mpeg-pmsi() mechanism. After 7.2.20, add the following subclause: 7.2.21 A Presentation is a kind of Descriptor. It defines the presentation of an item that contain

17、s it. It is used as the extension of Descriptor element. For example, if an Item element contains a Descriptor element whose type is Presentation, the Presentation can present the structured information in this Item. The precedence attribute of Presentation specifies whether one Presentation has pre

18、cedence over others when the value of the precedence attribute is true, while if this attribute is missing or that its value is false, then it is up to the end-user application to display the preferred one. In this case the end application can choose an appropriate Presentation to present the Struct

19、ured Information. The Presentation uses the mimeType attribute of the Resource element to specify the data type of the Presentation as a concatenation of MIME media-type, sub-type, and parameters, as defined in IETF RFC 2045 and 2046. EXAMPLE 1 If the Presentation is described as LASeR XML, the mime

20、Type should be “application/x-laser+xml”; if the Presentation is described as SVG XML, the mimeType should be “image/svg+xml”. An Item element may contain one or more Presentations which can be described by LASeR XML, BIFS and so on. The Presentation may contain the presentation information inline a

21、s well-formed XML or just a pointer which points to a remote one. The ref attribute of the Resource element is used to identify whether it is a pointer or not. The URI value of the ref identifies the presentation information. It is a pointer that points to the remote presentation information; if the

22、 ref attribute is omitted, it means that the Presentation shall contain the presentation information inline as well-formed XML. For example, it can be a LASeR scene file. Amendment 1:2013 to CAN/CSA-21000-2-06ISO/IEC 21000-2:2005/Amd.1:2012(E) 2 ISO/IEC 2012 All rights reservedThe presentation infor

23、mation can reference the metadata from a remote one. The mpeg-pmsi() schema can be used to do this. NOTE It should be noticed that the information in parent Item may be modified when employs mpeg-pmsi() mechanism. The Presentation is the extension of the Descriptor element, and it provides the prese

24、ntation information for the item element which contains it. The namespace of Presentation is urn:mpeg:mpeg21:2010:02-DIDL-P-NS and its prefix is didl-p. Table AMD1.1 The Presentation syntax Diagram Children Used by Attribute Name Type Description precedence string Specifies whether one Presentation

25、has precedence over others. Source Amendment 1:2013 to CAN/CSA-21000-2-06ISO/IEC 21000-2:2005/Amd.1:2012(E) ISO/IEC 2012 All rights reserved 3EXAMPLE 2 The Presentation makes use of regular Component/Resource for “mimeType” and “ref” functionality. Amendment 1:2013 to CAN/CSA-21000-2-06ISO/IEC 21000

26、-2:2005/Amd.1:2012(E) ICS 35.040 ISO/IEC 2012 All rights reserved Copyright NoticeThis A mendment to t he I nternational St andard c ontains i nformation copy right p rotected by t he International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). Except

27、 as permitted under the laws of Canada, no extract of this Amendment to the International Standard may be reproduced, stored in any retrieval system, or transmitted in any form or by any means, electronic, photocopying, recording, or otherwise, without prior permission from the Standards Council of

28、Canada (SCC). Requests for permission to reproduce this Amendment to the International Standard or parts thereof should be addressed to Manager, Technical Document Centre Standards Council of Canada 270 Albert Street, Suite 200 Ottawa, Ontario K1P 6N7 The Canadian adoption of this Amendment to the I

29、nternational Standard contains information copyright protected by CSA Group. All rights reserved. No part of this adopted Amendment may be reproduced in any form whatsoever without the prior permission of the publisher. ISO/IEC material is reprinted with permission. Requests for permission to reprod

30、uce this adopted Amendment or parts thereof should be addressed to Manager, Sales CSA Group 5060 Spectrum Way, Suite 100 Mississauga, Ontario L4W 5N6Copyright violators will be prosecuted to the full extent of the law.PRINTED IN CANADAIMPRIMEAU CANADA100%CSA Group prints its publications on Rolland Enviro100, which contains 100%recycled post-consumer fibre, is EcoLogo and Processed Chlorine Free certified, and was manufactured using biogas energy.ISBN 978-1-55XXX-XXX-X