ISO 26433-2009 Digital cinema (D-cinema) - XML data types《数字电影院(D-电影) 可扩展标示语言(XML)数据类型》.pdf

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1、 Reference number ISO 26433:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 26433 First edition 2009-12-15 Digital cinema (D-cinema) XML data types Cinma numrique (cinma D) Types de donnes XML ISO 26433:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensi

2、ng 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 downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO C

3、entral Secretariat 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

4、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. COPYRIGHT PROTECTED DOCUMENT ISO 2009 All rights reserved. Unless otherwise specified, no part of th

5、is 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-12

6、11 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 2009 All rights reservedISO 26433:2009(E) ISO 2009 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of n

7、ational standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Inter

8、national organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the

9、 rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by

10、 at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 26433 was prepared by the Society of Motion P

11、icture and Television Engineers (as SMPTE 433-2008) and was adopted, under a special “fast-track procedure”, by Technical Committee ISO/TC 36, Cinematography, in parallel with its approval by the ISO member bodies. ISO 26433:2009(E) iv ISO 2009 All rights reservedIntroduction This International Stan

12、dard comprises SMPTE 433-2008 and Annex ZZ (which provides equivalences between ISO standards and SMPTE standards referenced in the text). Copyright 2008 by THE SOCIETY OF MOTION PICTURE AND TELEVISION ENGINEERS 595 W. Hartsdale Ave., White Plains, NY 10607 (914) 761-1100 Approved March 3, 2008 Tabl

13、e of Contents Page Foreword . 2 Introduction . 2 1 Scope 3 2 Conformance Notation 3 3 Normative References 3 4 DCML Namespace 4 5 Basic Data Types 4 5.1 UUID Type . 4 5.2 User Text Type. 5 5.3 Rational Type. 5 5.4 Units of Measure 5 5.5 Temperature Type 7 5.6 Voltage Type 7 5.7 Current Type 7 5.8 Du

14、ration Type. 7 5.9 Rate Type. 8 5.10 Device Identifier Types 8 5.11 Device Type Identifier Type . 10 5.12 Named Parameters and Parameter Lists 11 5.13 Version Information Types . 13 6 Composite Types 14 6.1 Device Description Type 14 7 XML Schema (Informative) 16 Annex A Camel Case Usage (Informativ

15、e) 17 Annex B Bibliography (Informative) 18 B.1 Language Identifiers 18 B.2 Character Coding. 18 Page 1 of 18 pages SMPTE 433-2008SMPTE STANDARD D-Cinema XML Data Types ISO 26433:2009(E) ISO 2009 All rights reserved 1SMPTE 433-2008 Page 2 of 18 pages Foreword SMPTE (the Society of Motion Picture and

16、 Television Engineers) is an internationally-recognized standards developing organization. Headquartered and incorporated in the United States of America, SMPTE has members in over 80 countries on six continents. SMPTEs Engineering Documents, including Standards, Recommended Practices and Engineerin

17、g Guidelines, are prepared by SMPTEs Technology Committees. Participation in these Committees is open to all with a bona fide interest in their work. SMPTE cooperates closely with other standards-developing organizations, including ISO, IEC and ITU. SMPTE Engineering Documents are drafted in accorda

18、nce with the rules given in Part XIII of its Administrative Practices. SMPTE Standard 433 was prepared by Technology Committee DC28. Introduction In the development of XML Schema for a number of D-Cinema artifacts, it was observed that a number of common data types were defined and redefined multipl

19、e times in application schemas. This document combines the definition of the most commonly duplicated data types in a single namespace, along with additional types that are most commonly defined in large XML projects, and which have general applicability to the field of Digital Cinema Systems. The i

20、ntention is that this namespace can be included in other schema to easily use these types as needed. These data types are defined using W3C XML Schema Definition Language (XSDL) as defined in XML-SCH-1. ISO 26433:2009(E) 2 ISO 2009 All rights reservedSMPTE 433-2008 Page 3 of 18 pages 1 Scope The pur

21、pose of this document is to define and describe common data types used in D-Cinema metadata structures for applications using XML as a data description language. In addition, this document includes normative references for types and identifiers, defined elsewhere, which are necessary to use XML in s

22、tandards documents. The structure and composition of the types defined in this document are simple yet general in order to promote reusability in other standards. 2 Conformance Notation Normative text is text that describes elements of the design that are indispensable or contains the conformance la

23、nguage keywords: “shall“, “should“, or “may“. Informative text is text that is potentially helpful to the user, but not indispensable, and can be removed, changed, or added editorially without affecting interoperability. Informative text does not contain any conformance keywords. All text in this do

24、cument is, by default, normative, except: the Introduction, any section explicitly labeled as “Informative“ or individual paragraphs that start with “Note:” The keywords “shall“ and “shall not“ indicate requirements strictly to be followed in order to conform to the document and from which no deviat

25、ion is permitted. The keywords, “should“ and “should not“ indicate that, among several possibilities, one is recommended as particularly suitable, without mentioning or excluding others; or that a certain course of action is preferred but not necessarily required; or that (in the negative form) a ce

26、rtain possibility or course of action is deprecated but not prohibited. The keywords “may“ and “need not“ indicate courses of action permissible within the limits of the document. The keyword “reserved” indicates a provision that is not defined at this time, shall not be used, and may be defined in

27、the future. The keyword “forbidden” indicates “reserved” and in addition indicates that the provision will never be defined in the future. A conformant implementation according to this document is one that includes all mandatory provisions (“shall“) and, if implemented, all recommended provisions (“

28、should“) as described. A conformant implementation need not implement optional provisions (“may“) and need not implement them as described. 3 Normative References The following standards contain provisions which, through reference in this text, constitute provisions of this standard. At the time of

29、publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of the standards indicated below. XML-SCH-1 XML Schema Part 1: Structures http:/ww

30、w.w3.org/TR/xmlschema-1-20041028/ XML-SCH-2 XML Schema Part 2: Datatypes http:/www.w3.org/TR/xmlschema-2-20041028/ ISO-639-2 International Standards Organization (ISO) ISO-639-2 Codes for the representation of names of languages - Part 2: Alpha-3 code. Normative Text: http:/www.loc.gov/standards/iso

31、639-2/normtext.html Registration Authority: US Library of Congress: http:/www.loc.gov/standards/iso639-2/ ISO 26433:2009(E) ISO 2009 All rights reserved 3SMPTE 433-2008 Page 4 of 18 pages ISO-3166-1 International Standards Organization (ISO) ISO 3166-1 Codes for the representation of names of countr

32、ies and their subdivisions - Part 1: Country codes Official List: http:/www.iso.org/iso/en/prods-services/iso3166ma/02iso-3166-code-lists/list-en1.html Decoding Table: http:/www.iso.ch/iso/en/prods-services/iso3166ma/02iso-3166-code-lists/iso_3166- 1_decoding_table.html RFC-4122 Internet Engineering

33、 Task Force (IETF) RFC 4122 “A Universally Unique Identifier (UUID) URN Namespace“ http:/www.ietf.org/rfc/rfc4122.txt RFC-3066 Internet Engineering Task Force (IETF) RFC 3066 “Tags for Identification of Languages“ (January 2001) http:/www.ietf.org/rfc/rfc3066.txt RFC-3629 Internet Engineering Task F

34、orce (IETF) RFC 3629: “UTF-8, a transformation format of ISO 10646“ http:/www.ietf.org/rfc/rfc3629.txt D-Cert SMPTE 430-2-2006, D-Cinema Operations Digital Certificate 4 DCML Namespace This document uses many of the basic datatypes specified in XML-SCH-2 to define a number of derived types for D-Cin

35、ema applications. This collection of types shall be referred to as Digital Cinema Mark-up Language (DCML). The types defined in this document shall be included in an XML namespace, whose Namespace Name (URI) shall be: http:/www.smpte-ra.org/schemas/433/2008/dcmlTypes/ When published, the version num

36、ber of the informative XML Schema representation of the namespace shall be set to “1.0“, where “1“ is the major part of the version number, and “0“ is the minor part. If the namespace is subsequently revised to add new types not defined in this standard, but not to modify any of the existing types i

37、n a way that breaks reverse compatibility, the minor part of the version number shall be incremented by one. If the namespace is subsequently modified with result of changing any of the types defined in this document in a way that breaks reverse compatibility, the major part of the version number sh

38、all be incremented by one. The version number shall be specified by the version attribute the xs:schema element of the XML schema that this namespace represents. 5 Basic Data Types This section describes a set of fundamental data types that are intended for use in the construction of more complex ty

39、pes in application schemas. 5.1 UUID Type UUIDs are used as object identifiers in many places in schema for D-Cinema. The structure of a UUID is normatively defined in RFC-4122. In schemas, UUIDs shall be represented by the following data type: ISO 26433:2009(E) 4 ISO 2009 All rights reservedSMPTE 4

40、33-2008 Page 5 of 18 pages 5.2 User Text Type In various places in schemas, user text data is specified. In order to provide for language specification and a default language, the following User Text type is extended from a simple string type. Schemas shall use this type to represent stored text int

41、ended for viewing by users. Note that the language identifier attribute is optional, but defaults to English in the absence of the attribute. The language identifiers are defined in RFC- 3066. In XSDL, the User Text Type shall be defined as follows: 5.3 Rational Type Many relationships in media are

42、described in terms of ratios of integers. Image aspect ratios and edit rates are common examples of this. In order to provide a consistent representation of these ratios, the Rational data type is defined as an ordered list of two long integers. The first long integer in the list is the numerator, a

43、nd the second is the denominator. In XSDL, the Rational Type shall be defined as follows: 5.4 Units of Measure The basic datatypes defined in XML-SCH-2 do not address units of measure. In Digital Cinema systems, many specifications are expressed in units of measurement, and many quantities must be m

44、easured. While the units of measurement may be implicit in some cases, in other cases explicit units are required to clarify the meaning of the measurement. This section defines XML data types for common units of measure that are useful for digital cinema applications, such as system set-up and moni

45、toring. 5.4.1 Units of Temperature Temperatures are normally expressed on one of three scales. This type defines a set of tokens, which provide for the expression of temperature scale units. The set of temperature unit tokens shall be defined as follows: ISO 26433:2009(E) ISO 2009 All rights reserve

46、d 5SMPTE 433-2008 Page 6 of 18 pages 5.4.2 Units of Voltage Units of voltage are well understood, but are usually scaled in chunks of three orders of magnitude when expressed as measurements. This type defines tokens for the common scaling orders used in common electronic systems. The set of voltage

47、 unit tokens shall be defined as follows: 5.4.3 Units of Current Units of current are expressed in amperes, and are usually scaled in chunks of three orders of magnitude when expressed as measurements. This type defines tokens for the common scaling orders used in common electronic systems. The set

48、of current unit tokens shall be defined as follows: Current is commonly understood to be measured in two modes: either alternating current (AC) or direct current (DC). The current mode shall be expressed with a token defined in the following type: 5.4.4 Units of Duration (Time) Duration is defined i

49、n units of seconds, where sixty seconds is one minute, sixty minutes are one hour, twenty-four hours are one day, seven days are one week, and 365 days are one year. Standard engineering practice provides the three orders of magnitude decimal offsets for subdivisions of seconds. Durations of time shall be expressed using the following tokens to convey the unit period of time expressed. Note: Durations expressed in years do not account for leap year corrections that work is left to the application