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ISO/IEC 14478-3:1998

Current Revision

Information technology - Computer graphics and image processing - Presentation Environment for Multimedia Objects (PREMO) - Part 3: Multimedia Systems Services

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This part of ISO/IEC 14478 defines a standard set of multimedia system services that can be used by multimedia application developers in a variety of computing environments. The focus is on enabling multimedia applications in a heterogeneous, distributed computing environment. Throughout this part of ISO/IEC 14478, this component will also be referred to as “Multimedia Systems Services”, and abbreviated as MSS.

The Multimedia Systems Services constitutes a framework of “middleware” — system software components lying in the region between the generic operating system and specific applications. As middleware, the Multimedia Systems Services marshals lower-level system resources to the task of supporting multimedia processing, providing a set of common services which can be used by multimedia application developers.

The Multimedia Systems Services encompasses the following characteristics:

  • provision of an abstract type for a media processing node, extensible through subtyping to support abstractions of real media processing hardware or software;
  • provision of an abstract type for the data flow path or the connection between media processing nodes, encapsulating low-level connection and transport semantics;
  • grouping of multiple processing nodes and connections into a single unit for purposes of resource reservation and stream control;
  • provision of a media dataflow abstraction, with support for a variety of position, time and/or synchronization capabilities:
  • separation of the media format abstractions from the dataflow abstraction;
  • synchronous exceptions and asynchronous events;
  • application visible characterization of object capabilities;
  • registration of objects in a distributed environment by location and capabilities;
  • retrieval of objects in a distributed environment by location and constraints;
  • definition of a Media Stream Protocol to support media independent transport and synchronization.

The Multimedia Systems Services rely on the object model of ISO/IEC 14478-1 (Fundamentals of PREMO) and the object types and non-object data types defined in ISO/IEC 14478-2 (PREMO Foundation Component).


SDO ISO: International Organization for Standardization
Document Number ISO/IEC 14478
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO/IEC JTC 1/SC 24/WG 6
Publish Date Document Id Type View
Not Available ISO/IEC 14478-3:1998 Revision