lso/iec l INTERNATIONAL STANDARD

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3 INTERNATIONAL STANDARD lso/iec l First edition l 5 Information technology - Coding of multimedia and hypermedia information - Part I: MHEG object representation - Base notation (ASN.1) Technologies de i informa tion - Codage de / information multim6dia et hypermkdia - Partie 7: Repr&entation d objet MHEG - Notation de base (ASN. I) Reference number ISO/I EC I : 1997(E)

4 lso/iec l :1997(E) Contents 0 INTRODUCTION... xl 0.1 Application domains for requirements analysis... xii 0.2 Multimedia/Hypermedia application requirements... xlii 0.3 Rationale for standardisation of multimedia and hypermedia information... xliv 0.4 This part of ISO/IEC objectives... XIV Interchange... XIV Presentation... XIV Minimal resources... XIV Real time... xlvi 0.5 Concepts of this part of ISO/IEC xlvi 0.51 Object orientation,...,i ~... xlvi Encoding ~...~... Overview of the MHEG classes D...~ xlvii xlviii Content class... xlviii Multiplexed content class... xlviii Composite class... xlviii Action class... xlviii Elementary actions... xlix Get actions... xlix Link class...~...~... xlix Script class...~...~... xlix Descriptor class...~...~ I Container class,...,...~...~......,... I Run-time objects (t-t-objects)...~...~...~...~... I Channels ~...~......~......,... ISO/IEC 1997 All rights reserved. Unless otherwise 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 the publisher. ISO/IEC Copyright Office l Case postale 56 0 CH-1211 Geneve 20 l Switzerland Printed in Switzerland ii

5 0 ISO/IEC lso/iec 13522=1:1997(E) 0.6 The MHEG application interface... I 0.7 Extensibility of this part of ISO/IEC I. 0.8 Liaisons.,...*...*...*...,..*...,...,,,...,..., II SCOPE l Specificity of the scope Issues outside the scope of this part of ISO/IEC CONFORMANCE Profiles Syntax Semantics... 2 NORMATIVE REFERENCES... 2 DEFINITIONS... 3 SYMBOLS AND ABBREVIATIONS SECTION 1: OVERVIEW MAIN FEATURES OF THIS PART OF ISO/IEC Interchanging multimedia objects The object-oriented approach Object classes Subclasses and inheritance Polymorphism Objects and object life cycles Technical features Object composition for interchange and presentation Run-time objects Individual behaviour common to all n-objects created from a given model object Synchronisation Links Input Event handling Anchor Real time Object management Object identification Object reference Object content Uniform objects...*... 18

6 lso/iec :1997(E) 0 ISO/IEC Minimal resources Presentation and structuring dynamism Macro action and link Static and dynamic assignment of generic value MHEG ENGINE ASSUMPTIONS Handling and Interchange of objects The MHEG application interface Exception handling METHODOLOGY Modularity Methodology of representation of MHEG objects Level A: Description of representation Level B: Precise object-oriented definition Level C: Isomorphic notations for the structure of MHEG objects ASN.l techniques used in level C Copyright protection Level D: Coded representation of MHEG objects SECTION 2: GENERIC UTILITY AND USEFUL DEFINITION MECHANISMS PRESENTATION MECHANISM Presentation space (PS) l Temporal axis Spatial axes Audible volume range (AVR) Original presentation space (OPS) lnitialisation of OS and OD lnitialisation of GF lnitialisation of attributes for t-t-components lnitialisation of attributes for n-contents Channel presentation space (CPS) Relative presentation space (RPS) CPS mapping GENERIC IDENTIFICATION MECHANISM External identification l Public identifier System identifier Internal identification iv

7 0 ISOAEC lso/iec l :1997(E) MHEG Identifier Root Rt ID Channel identifier Composition element index Container element identification Socket identifier Stream identifier Symbolic identification GENERIC REFERENCE MECHANISM l Generic reference using generic identification Predefined references ? reference GENERIC VALUE Generic boolean Generic numeric Generic integer Generic ratio Generic string Generic reference Generic list MACRO MECHANISM HOOKS EXTENSIBILITY Catalogues Incorporation of New MHEG object classes Provision for extensibility SECTION 3: OVERVIEW OF MHEG CLASSES MHEG OBJECT CLASSES OVERVIEW STRUCTURE OF MH-OBJECT CLASS Class identification MHEG ID General object information STRUCTURE OF ACTION CLASS Elementary actions Basic action object Nested action object Macro action object V

8 ISOAEC l :1997(E) 0 ISO/IEC 19 STRUCTURE OF LINK CLASS Link Condition l Trigger condition ~...~ Constraint condition * Source value Comparison value Previous condition Current condition Comparison operator Logical combination Logical operator Link Effect Basic link object Nested link object Macro link object QQQQQQQQQQQQQbQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 20 STRUCTURE OF MODEL CLASS 67 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ.QQQQQQQQQQQQ.Q.QQQQQ.QQQQQQQQQQQQ.QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ.QQQQQQ 21 STRUCTURE OF SCRIPT CLASS STRUCTURE OF COMPONENT.Q..QQ..QQ.QQQ...QQQQQQQQQQQ..Q..Q.Q.QQ.Q.QQ.Q..QQQQQQQQ.Q.QQQ..Q..QQQQ.Q.QQ.QQQQQQQQQQQQQ..QQQQQQ.Q.QQQ..QQ.QQQ... CLASS STRUCTURE OF CONTENT CLASS 68 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 24 STRUCTURE OF MULTIPLEXED CONTENT CLASS STRUCTURE OF COMPOSITE CLASS QQQQQQQQQQQQQQQQQQQQQQQ~QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Availability Start-up Availability Close-down Rt-Availability Start-up W-Availability Close-down Composition Element Composition example STRUCTURE OF CONTAINER CLASS Container Start-up Container Close-down Container Element QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 27 STRUCTURE OF DESCRIPTOR CLASS Related Object l Script Class Information Content Class Information MUX Content Class Info Alternative Object vi

9 0 ISO/IEC lso/iec l :1997(E) Offset Other Descriptor Readme System Readable Material Channel Information Catalogued Style Information Cat Ext elementary action Info Cat Ext Attribute Info SECTION 4: COMMON BEHAVIOUR OF MHEG ENTITIES...Q...Q..QQQQQQQQQQQQ..QQQQQQQQQQQQ..QQ..QQQQ.QQ MHEG ENTITY BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOOQQQQQQQQQQQQQ MHEG ENTITY STATE DEFINITION QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQ MHEG object availability Link activation Channel availability Rt-object availability Rt-Component running behaviour Rt-Component presentation behaviour LIFE CYCLE OF MHEG ENTITIES QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ GENERAL ACTION MECHANISMS l Action handling Processing of link effect Serial action processing Parallel action processing Basic processing of an elementary action Resolution of target set Arithmetic precision COMMON ACTION EFFECTS AND HANDLING QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Elementary actions Get actions Recommended exception handling POSTPONE BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ*QQQQQQQQQQQQQQQQ*QQQQQQQQQQQQQQ.QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Behaviour attributes and statuses Actions to change the behaviour Delay action l Delay action effect Delay additional error conditions vii

10 lso/iec l :1997(E) 0 ISO/IEC 34 RETURNABILITY BEHAVIOUR Q~~~Q~~Q~~~~QQQ~~~Q~~~~~~~~~~~~Q~~~~~~~~~QQ~~~~~~~~~~~~~~~~*~~~~QQ~~Q*QQ~QQQQ*QQ~QQQQQ~~Q*QQQQQQQQQQQ~QQQQQQQQQQQQQQQQQ~QQ~QQQQ Behaviour attributes and statuses Actions to change the behaviour Return action l Return action effect Return additional error conditions ALIAS BEHAVIOUR Behaviour attributes and statuses Actions to change the behaviour Set Alias action l Set Alias action effect Set Alias additional error conditions EXTENSIBILITY BEHAVIOUR Behaviour attributes and statuses Catalogued Attribute Actions to change the behaviour Catalogued Elementary Action action l Catalogued Elementary action effect Catalogued Elementary Action additional error conditions Set Catalogued Attribute action Set Catalogued Attribute action effect Set Catalogued Attribute additional error conditions Actions to retrieve the behaviour Get Catalogued Attribute action l Get Catalogued Attribute action effect Get Catalogued Attribute additional error conditions SECTION 5: BEHAVIOUR OF MHEG OBJECTS QQQQQQQQQQQQQQQQQ~QQQQQQQ~~Q~Q~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AVAILABILITY BEHAVIOUR OF MHEG OBJECTS Behaviour attributes and statuses Preparation Status Actions to change the behaviour Prepare action Prepare action effect Prepare additional error conditions Destroy action Destroy action effect VIII

11 0 ISO/IEC ISOAEC : 1997(E) Destroy additional error conditions Actions to retrieve the behaviour Get Preparation Status action l MHEG effect Get Preparation Status additional error conditions LINK OBJECT ACTIVATION BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Behaviour attributes and statuses Activation Status Actions to change the behaviour Activate action l Activate action targeted to a single link object Activate additional error conditions Deactivate action Deactivate action effect Deactivate additional error conditions Actions to retrieve the behaviour Get Activation Status action l Get activation status targeted to a link object Get Activation Status additional error conditions LINK OBJECT ABORT BEHAVIOUR Behaviour attributes and statuses Actions to change the behaviour Link Abort action l Link Abort action effect Link Abort additional error conditions QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 40 CONTENT CLASS GENERIC VALUE STORAGE BEHAVIOUR Behaviour attributes and statuses Data Actions to change the behaviour Set Data action l Set Data targeted to a single content object Set Data additional error conditions Add action Add action effect Add additional error conditions Substract action Subtract targeted to a single content object ix

12 ISOAEC 13522=1:1997(E) 0 ISO/IEC Substract additional error conditions Actions to retrieve the behaviour Get Data action l Get Data targeted to a content object Get Data additional error conditions CONTENT CLASS COPY BEHAVIOUR QQOQQQOQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQ l Behaviour attributes and statuses Actions to change the behaviour Copy action l Copy action effect Copy additional error conditions SECTION 6: RT-OBJECTS BEHAVIOUR Q..QQQ...Q.Q...QQ.Q...Q..Q.QQ.Q..Q.Q...Q...Q RT-OBJECTS AVAILABILITY BEHAVIOUR 114 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 42.1 Behaviour attributes and statuses Rt-Availability Status Actions to change the behmiour New action l New action effect New additional error conditions Delete action Delete action effect Delete additional error conditions Actions to retrieve the behaviour Get Rt-Availability Status action l Get Rt-availability Status targeted to rt-object Get Rt-Availability Status additional error conditions RT-OBJECTS RUNNING BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Behaviour attributes and statuses Running Status Actions to change the behaviour Run action l MHEG effect of Run targeted to a single t-t-object User effect of Run targeted to a single rt-object Run additional error conditions Stop action Stop targeted to a single rt-object X

13 0 ISO/IEC ISOAEC l :1997(E) Stop additional error conditions Actions to retrieve the behaviour Get Running Status action l MHEG effect Get Running Status additional error conditions RT-SCRIPT PASSING PARAMETER BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Behaviour attributes and statuses Actions to change the behaviour Set Parameters action l Set Parameter action effect Set Parameters additional error conditions QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQOQOQQQQQQQQQQQQQQQQQQQQQQQ 45 RT-SCRIPTS TERMINATION BEHAVIOUR Behaviour attributes and statuses Termination Status Actions to retrieve the behaviour Get Termination Status action l Get Termination Status action effect Get Termination Status additional error conditions QQQQQQQQQQQQ~~~~~~Q~Q~~~QQQQ~~Q~~~~~~~~Q~QQQQQQQQ 46 SOCKETS PRESENTATION AND STRUCTURAL DYNAMISM BEHAVIOUR Behaviour attributes and statuses Actions to change the behaviour Plug action l Plug action effect Plug additional error conditions QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 47 RT-COMPOSITE NAVIGATION BEHAVIOUR Behaviour attributes and statuses Rt-Composite Address Navigation Command Child EmptyChild Sibling Ancestor Actions to retrieve the behaviour Get Rt-Composite Address action l Get Rt-Composite Address effect Get Rt-Composite Address additional error conditions xi

14 ISOAEC :1997(E) 0 ISOAEC QQQQQQQQQQQ~QQQ~~QQQQQ~~~~~~~~QQQ~~~~~QQ~~Q~~~~~~~~~~~~QQQQQQQQQQQQQQQQQQQQQQQQQQ~~~~~~~ 48 RT-COMPONENTS RI S ASSIGNMENT BEHAVIOUR Behaviour attributes and statuses RPS Assignment Actions to change the behaviour Set RPS Assignment action l Set RPS Assignment action effect Set RPS Assignment additional error conditions Actions to retrieve the behaviour Get RPS Assignment action l Get RPS Assignment action effect Get RPS Assignment additional error conditions QQQQQQQQQQQQ~~QQQQQQQQ~~~~~~~~QQQ~~~~~~~~~~~Q~QQ~~~~~~~QQQQ~~~~~~~QQ~~QQ~~~~~QQ~~~~~~~Q~ 49 RT-COMPONENTS PERCEPTABILITY BEHAVIOUR Behaviour attributes and statuses Perceptability Presentation Priority Actions to change the behaviour Set Perceptability action l Set Perceptability action effect Set Perceptability additional error conditions Set Presentation Priority action Set Presentation Priority action effect Set Presentation Priority additional error conditions Actions to retrieve the behaviour Get Perceptability action l Get Perceptability action effect Get Perceptability additional error conditions Get Presentation Priority action Get Presentation Priority action effect Get Presentation Priority additional error conditions RT-COMPONENTS TEMPORAL BEHAVIOUR 133 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ 50.1 Behaviour attributes and statuses OD POD OVD PVD Temporal Termination PVD Position xii

15 0 ISO/IEC ISOAEC l :1997(E) 50.8 CTP...**...*...m...m...mm.* GTF...*...m..m...* Timestone Status Timestone ID Expected OVD Result Expected PVD Result Actions to change the behaviour Set OVD action l Set OVD effect Set OVD additional error conditions Set CTP action Set CTP effect Set CTP additional error conditions Set Temporal Termination action Set Temporal Termination effect Set Temporal Termination additional error conditions Set PVD Position action Set PVD Position effect Set PVD Position additional error conditions Set GTF action l Set GTF effect Set GTF additional error conditions Set Timestones action Set Timestones action effect Set Timestones additional error conditions Actions to retrieve the behaviour Get OD action l Get OD action effect Get OD additional error conditions Get POD action Get POD action effect Get POD additional error conditions Get OVD action Get OVD action effect Get OVD additional error conditions Get PVD action Get PVD action effect XIII

16 ISOAEC :1997(E) 0 ISO/IEC Get PVD additional error conditions Get CTP action Get CTP action effect Get CTP additional error conditions Get Temporal Termination action Get Temporal Termination action effect Get Temporal Termination additional error conditions Get PVD Position action Get PVD Position action effect Get PVD Position additional error conditions Get GTF action Get GTF action effect Get GTF additional error conditions Get Timestone Status action Get Timestone Status action effect Get Timestone Status additional error conditions Q.Q.Q..QQQ..Q...Q...QQ..Q..QQ...Q..Q.QQQQQ.Q.Q...Q.QQ...QQQ.Q.Q..QQQQ.QQQQ.Q.Q.QQ...QQ.Q..QQQ.Q RT-COMPONENTS SPATIAL BEHAVICWR 51.l Behaviour attributes and statuses OS POS Aspect Ratio Resizing Strategy OVS OAP OVS Position PVS lO OVS Proj Strategy PAP PVS Position GSF Spatial Control User Spatial Control Expected Axis Result Param Point Type Param Actions to change the behaviour Set Aspect Ratio action l Set Aspect Ratio action effect xiv

17 0 ISO/IEC ISOAEC 13522=1:1997(E) Set Aspect Ratio additional error conditions Set Resizing Strategy action J8.2.1 Set Resizing Strategy effect Set Resizing Strategy additional error conditions Set OVS Proj Strategy action Set OVS Proj Strategy effect Set OVS Proj Strategy additional error conditions Set OVS action Set OVS action effect Set OVS additional error conditions Set ml Set ml J8.7 Set l 51 m J8.8 Set Set ml OAP action Set OAP action effect Set OAP additional error conditions OVS Position action Set OVS Position action effect Set OVS Position additional error conditions PAP action Set PAP action effect Set PAP additional error conditions PVS Position action Set PVS Position action effect Set PVS Position additional error conditions GSF action Set GSF action effect Set GSF additional error conditions Set User Spatial Control action Set User Spatial Control action effect Set User Spatial Control additional error conditions Actions to retrieve the behaviour l Get OS action l Get OS action effect Get OS additional error conditions J9.2 Get POS action Get POS action effect Get POS additional error conditions Get Aspect Ratio action Get Aspect Ratio action effect xv

18 ISOAEC 13522=1:1997(E) OISOAEC Get Aspect Ratio additional error conditions Get Resizing Strategy action Get Resizing Strategy action effect Get Resizing Strategy additional error conditions Get OVS Proj Strategy action Get OVS Proj Strategy action effect Get OVS Proj Strategy additional error conditions Get OVS action Get OVS action effect Get OVS additional error conditions J9.7 Get OAP action Get OAP action effect Get OAP additional error conditions Get OVS Position action l Get OVS Position action effect Get OVS Position additional error conditions Get PVS action Get PVS action effect Get PVS additional error conditions Get PAP action Get PAP action effect Get PAP additional error conditions Get PVS Position action l Get PVS Position action effect Get PVS Position additional error conditions Get GSF action Get GSF action effect Get GSF additional error conditions Get User Spatial Control action Get User Spatial Control effect Get User Spatial Control additional error conditions RT-COMPONENTS AUDIBLE BEHAVIOUR QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQOQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ Behaviour attributes and statuses OV CV PCV GVF xvi

19 0 ISO/IEC lso/iec 13522=1:1997(E) 52.6 Actions to change the behaviour Set CV action l Set CV action effect Set CV additional error conditions Set GVF action Set GVF action effect Set GVF additional error conditions Actions to retrieve the behaviour Get OV action l Get OV action effect Get OV additional error conditions Get CV action Get CV action effect Get CV additional error conditions Get PCV action Get PCV action effect Get PCV additional error conditions Get GVF action Get GVF action effect Get GVF additional error conditions RT-MUX STREAM CHOICE BEHAVIOUR 168 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ~~~~~~~~~~~~~~~~~~~~QQQQQQ~Q~QQQQQQQQQ~QQQQQQQQ~Q 53.1 Behaviour attributes and statuses Stream Choice Stream Chosen State Stream Identification Actions to change the behaviour Set Stream Choice action l Set Stream Choice action effect Set Stream Choice additional error conditions Actions to retrieve the behaviour Get Stream Choice action l Get Stream Choice action effect Get Stream Choice additional error conditions Get Stream Chosen State action Get Stream Chosen State action effect Get Stream Chosen State additional error conditions xvii

20 lso/iec 13522=1:1997(E) 0 lso/iec 54 INTERACTION BEHAVIOUR Behaviour attributes and statuses Interaction Type Interaction Status Selection Status Modification Status Interaction Ability Selectability Modifiability Min Interact Required Max Interact Required Number Of Interacted Sockets Actions to change the behaviour Set l Set l Actions Interaction Ability action ~...~ Set Interaction Ability action effect m Set Interaction Ability additional error conditions Interaction Status action Set Interaction Status action effect * Set Interaction Status additional error conditions m to retrieve the behaviour m Get Interaction Ability action l Get Interaction Ability action effect Get Interaction Ability additional error conditions Get Min Interact Required action Get Min Interact Required action effect Get Min Interact Required additional error conditions Get Max Interact Required action Get Max Interact Required action effect Get Max Interact Required additional error conditions Get Interaction Status action Get Interaction Status action effect Get Interaction Status additional error conditions Get Number Of Interacted Sockets action Get Number Of Interacted Sockets action effect Get Number Of Interacted Sockets additional error conditions RT-COMPONENTS STYLE BEHAVIOUR XVIII Behaviour attributes and statuses

21 0 lso/iec ISOAEC :1997(E) 55.2 Style Actions to change the behaviour Set Style action l Set Style action effect Set Style additional error conditions Actions to change the behaviour Get Style action l Get Style action effect Get Style additional error conditions RT-CONTENTS ANCHOR BEHAVIOUR OOOOOOQQOQOOOOOOOQOOOOOOQOOQOOOOQOQOOOOOQOQQQQQOOQOOQQOOOOOOOOOOOQOQOOOOOOOOQOQQOQQQQQQ~~QOQQQQQQQ~QQO~QQQQQQQQQ Behaviour attributes and statuses Actions to change the behaviour Attach Anchor action l Attach Anchor action effect Attach Anchor additional error conditions SECTION 7: CHANNELS BEHAVIOUR.....QQ.Q.Q...Q.QQ...Q...Q...Q...Q...QQQ.QQ.QQ CHANNEL AVAILABILITY BEHAVIOUR Behaviour attributes and statuses Channel Availability Status Actions to change the behaviour New Channel action l New Channel action effect New Channel additional error conditions Delete Channel action Delete Channel action effect Delete Channel additional error conditions Actions to retrieve the behaviour Get Channel Availability Status action l Get Channel action effect Get Channel Availability Status additional error conditions CHANNEL PERCEPTABILITY BEHAVIOUR QOOOQ*QQ**QQQQ*Q*QQ*QQQQQQQQ*QQQOOOQOOOOOOOOQQOOOOOQOOOOOOOOOOOOQQQQOOOOOOOQQQOOOOOOQOOOOOQOOOQOQQOOQOO Behaviour attributes and statuses Channel Perceptability Actions to change the behaviour Set Channel Perceptability action l Set Channel Perceptability action effect xix

22 ISOAEC l : 1997(E) 0 ISO/IEC Set Channel Perceptability additional error conditions =...*...,...* Actions to retrieve the behaviour Get Channel Perceptability action l Get Channel Perceptability action effect Get Channel Perceptability additional error conditions CHANNEL PRESENTATION SPACE BEHAVIOUR Behaviour attributes and statuses...~ Actions to change the behaviour Set CPS action l Set CPS action effect Set CPS additional error conditions SECTION 8: CHANNELS & RT-COMPONENTS BEHAVIOUR...o CHANNELS AND RT-COMPONENTS EVENTS BEHAVIOUR Behaviour attributes and statuses Event Event Data Actions to change the behaviour Set Event action l Set Event action effect Set Event additional error conditions Actions to retrieve the behaviour Get Event action l Get Event action effect Get Event additional error conditions Get Event Data action Get Event Data action effect Get Event Data additional error conditions SECTION 9: DETAILED REPRESENTATION OF MHEG OBJECTS MH-OBJECT CLASS REPRESENTATION ATTRIBUTES l Mh-object Class Class Identification Class ID Description Name Owner xx

23 0 ISO/IEC lso/iec : 1997(E) 61.7 Version Date Keywords lO Copyright ll Copyright ID Copyright Number Licence Cache Priority Comments ACTION CLASS REPRESENTATION ATTRIBUTES Action Class Synchro Indicator Param Synchro Indicator Macro Synchro Indicator Synchronised Action Action Object LINK CLASS REPRESENTATION ATTRIBUTES Link Class Link Condition Trigger Condition Constraint Condition Source Value Comparison Operation Comparison Value... l Previous Condition Current Condition Comparison Operator Logical Combination Logical Operator Condition Link Effect Macro Parameter Resolution Usage Value MODEL CLASS REPRESENTATION ATTRIBUTES Model Class... l SCRIPT CLASS REPRESENTATION ATTRIBUTES Script Class xxi

24 ISOAEC 13522=1:1997(E) 0 ISO/IEC 65.2 Script Classification Script Data Script Inclusion InterchangedScript... l COMPONENT CLASS REPRESENTATION ATTRIBUTES Component Class CONTENT CLASS REPRESENTATION ATTRIBUTES Content Class Content Data Data Inclusion MULTIPLEXED CONTENT CLASS REPRESENTATION ATTRIBUTES Multiplexed Content Class Multiplexed Stream COMPOSITE CLASS REPRESENTATION ATTRIBUTES Composite Class Availability Start-up Availability Close-down Rt-Availability Start-up Rt-Availability Close-down Link Object Nb Of Elements Composition Element Element Index Associated Model Label CONTAINER CLASS REPRESENTATION ATTRIBUTES Container Class _ 70.2 Container Start-up Container Close-down Container Element DESCRIPTOR CLASS REPRESENTATION ATTRIBUTES l Descriptor Class Related Object Object Information Object Size Class Specific Information Script Class Information xxii

25 0 ISO/IEC ISO/lEC l :1997(E) 71.7 Content Class Information MUX Content Class Info Number Of Streams Stream Information Alternative Object...rn Alternative Descriptor Object Alternative Readme Offset Other Descriptor Readme System Readable Material Channel Information X min X max Y min Y max Z min Z max X Resolution Y Resolution Z Resolution T Resolution F min F max Audio Dynamic Channel Media Type Event Mapping Catalogued Style Information Cat Ext elementary action Info Cat Ext Attribute Info BEHAVIOURS Postpone behaviour l Delay Temporal Unit Ref Param Temporal Unit Ref Macro Temporal Unit Ref Duration Param XXIII..D

26 ISOAEC 13522=1:1997(E) 0 ISO/IEC 72.2 Returnability behaviour Return Return Indicator Param Returned Generic Value Param Content Object Ref Param Content Object Ref Macro Alias behaviour Set Alias Alias Spec Param Alias Spec Macro Alias Spec Extensibility behaviour Catalogued Elementary Action Catalogued Extended Elementary Action Param Catalogued Extended Elementary Action Macro Elementary Action Param Set Catalogued Attribute Ext Attribute Value Param Availability behaviour of MHEG objects Prepare Destroy Link object activation behaviour Activate Deactivate Link object abort behaviour Link Abort Content class generic value storage behaviour Set Data Substitution Indicator Param Substitution Indicator Macro Substitution Indicator Data Element Param Data Element Macro Data Element Process Indicator Add Substract xxiv

27 0 ISO/IEC lso/iec 13522=1:1997(E) 72.9 Content class copy behaviour copy Destination Param Rt-objects availability behaviour New Delete W-objects running behaviour l Run Number Of Performances Param Number Of Performances Macro Number Of Performances Stop Rt-script passing parameter behaviour Set Parameters Passing Param Passing Macro Passing Sockets presentation and structural dynamism behaviour Plug Plug In Param Plug In Macro Plug In Rt-components rps assignment behaviour Set RPS Assignment RPS Assignment Param RPS Assignment Macro Rt-components perceptability behaviour Set Perceptability Perceptability Param Set Presentation Priority Presentation Priority Param Presentation Priority Macro Rt-components temporal behaviour Set OVD Set CTP Set Temporal Termination Temporal Termination Param xxv

28 lso/iec :1997(E) 0 ISO/IEC Temporal Termination Macro Set PVD Position Temporal Position Param Set GTF GTF Param Set Timestones Timestone Spec Param Timestone Spec Macro Timestone Spec Timestone Timestone Position Number Of Repetitions Rt-components spatial behaviour Set Aspect Ratio Aspect Ratio Param Aspect Ratio Macro Set Resizing Strategy Resizing Strategy Param Resizing Strategy Macro Set OVS Proj Strategy OVS Proj Strategy Param OVS Proj Strategy Macro Set OVS Set OAP OAP Param Set OVS Position OVS Position Param Set PAP PAP Param Set PVS Position PVS Position Param Set GSF GSF Param Set User Spatial Control User Spatial Control Param User Spatial Control Macro Rt-components audible behaviour xxvi

29 0 ISO/IEC ISOAEC :1997(E) Set CV CV Param Set GVF GVF Target Rt-Composite Targets Param Channel Targets Param GVF Param Rt-mux stream choice behaviour Set Stream Choice Stream Spec Param Stream Spec Macro Stream Spec Interaction behaviour Interaction Status Param Interaction Status Macro Min Interact Required Param Min Interact Required Macro Max Interact Required Param Max Interact Required Macro Set Interaction Ability... z? Set Interaction Status Rt-components style behaviour l Set Style Catalogued Style Param Catalogued Style Macro Additional Information Param Rt-contents anchor behaviour Attach Anchor Anchor Spec Param Anchor Spec Macro Anchor Spec Anchor Channel availability behaviour New Channel Delete Channel Channel perceptability behaviour Set Channel Perceptability xxvii

30 ISOAEC 13522=1:1997(E) 0 ISO/IEC Channel Perceptability Param Channel Perceptability Macro Channel presentation space behaviour Set CPS CPS lnitialisation Param CPS lnitialisation Macro CPS lnitialisation CPS Duration CPS Size Channels and &components events behaviour Set Event Event Param Event Data Param ELEMENTARY ACTIONS List of elementary actions l Elementary Action Mheg entity, data, stream, macro parameter and identification useful definitions Using-Application Alias Identifier Index Tail Param Tail Macro Tail External ID Public ID System ID Null-Data Mheg ID Application ID Mh Number Null-Mh Stream ID Rt Number Null-Root-Rt Socket Identification Socket ID XXVIII

31 0 ISO/IEC lso/iec : 1997(E) Channel ID Default-Channel Macro Def ID References useful definitions Reference Alias Reference Mheg ID Reference External ID Reference Tail Reference Tail Complement Data Reference Mh-Reference Action Object Reference Link Object Reference Model Object Reference Script Object Reference Component Object Reference Content Object Ref Non-Mux Content Object Ref Multiplexed Content Object Ref Stream ID Reference Composite Object Reference Container Object Reference Container Element Reference This Descriptor Object Reference Root Rt-Reference Root Rt ID Reference Rt Number Reference Rt-Reference Rt-Script Reference Rt-Script ID Reference Root Rt-Component Reference Root Rt-Component ID Ref Rt-Component Reference Root Rt-Content Reference Root Rt-Content ID Ref xxix

32 ISOAEC (E) 0 ISO/IEC Rt-Content Reference Root Rt-Mux Reference Root Rt-Mux ID Reference Rt-Mux Reference Root Rt-Composite Reference Root Rt-Composite ID Ref Rt-Composite Reference Socket Reference...** Socket ID Reference...*******-*******-** Socket Tail Reference...******-********* Socket Tail Complement Channel Reference Channel ID Reference Rt-Component Channel Ref ,Definitions useful of targets Target Param Target Macro Target Mh-Target Param Mh-Target Macro Mh-Target Link Target Param Content Target Param Rt-Target Param Rt-Target Macro Rt-Target Rt-Script Target Param Rt-Script Target Macro Rt-Script Target Rt-Component Target Param Rt-Component Target Macro Rt-Component Target Rt-Content Target Param Rt-Content Target Macro Rt-Content Target Rt-Mux Target Param Rt-Mux Target Macro xxx

33 0 ISOAEC ISOAEC 13522=1:1997(E) Rt-Mux Target Rt-Composite Target Param Rt-Composite Target Macro Rt-Composite Target Socket Target Param Socket Target Macro Socket Target Return Target Param Channel Target Param Channel Target Macro Channel Target Rt-Component Channel Tg Param Rt-Component Channel Tg Macro Rt-Component Channel Tg Generic value useful definitions Generic Value Param Generic Value Macro Generic Value Value Generic Boolean Param Generic Boolean Macro Generic Boolean Boolean ,9 Generic Numeric Param Generic Numeric Macro Generic Numeric Numeric mmmmmmmmmmmmrn*mmmmmmmmmmmmmmm Generic I nteger Param Generic I nteger Macro Generic I nteger Integer Generic Ratio Param Generic Ratio Macro Generic Ratio Ratio Numerator Denominator xxxi

34 ISOAEC :1997(E) 0 ISOIIEC Generic String Param Generic String Macro Generic String String Generic Reference Param Generic Reference Macro Generic Reference Generic List Param Generic List Macro Generic List List Generic List Elt ID Param mmmmmmmmmmmmmmm...* Generic List Elt ID Macro Generic List Elt ID Evaluated values useful definitions Get Event Data Get Event Get Channel Perceptability Get Channel Availability Status Get Style Get Number Of Interacted Sockets Get Interaction Status.... ~ Get Max Interact Required Get Min Interact Required Get Get Get Get Get Get Get Interaction Ability Stream Chosen State Stream Choice GVF PCV cv ov Get Get Get Get User Spatial Control GSF PVS Position PAP Get PVS Get OVS Position xxxii

35 0 lsq/lec lso/iec l :1997(E) Get OAP Get ovs Get OVS Proj Strategy Get Resizing Strategy Get Aspect Ratio Get POS :29 Get OS Get Timestone Status Get GTF Get PVD Position Get Temporal Termination Get CTP Get PVD Get OVD Get POD Get OD Get Presentation Priority Get Perceptability Get RPS Assignment Get Rt-Composite Address Get Termination Status Get Running Status Get Rt-Availability Status Get Data Get Activation Status Get Preparation Status Get Catalogued Attribute Get Boolean Get Numeric Get Integer Get Ratio Get String Get Reference Get List Get Any Evaluated Value Evaluated Boolean XXXIII