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Proceedings Paper

Integrating multimedia streams into a distributed computing system
Author(s): B. J. Murphy; Glenford E. Mapp
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Paper Abstract

Continuous media, such as audio and video, are quickly becoming an integral part of distributed computing environments. A shortcoming of such environments is their lack of support for continuous flows of information. What is missing is the notion of an on-going communication activity with an associated quality of service. This paper describes a model for integrating multimedia flows into a distributed computing system. The model permits explicit bindings to be established between type-checked stream interfaces. The stream binding is represented in the computational model as a first-class object which encapsulates configuration rules and QoS attributes. An operational interface supplied by the binding object allows other objects within the system to manage the binding, to renegotiate QoS parameters, to control the flows across the binding, and to register interest in stream events such as flow reports and communication errors. The in-band stream interface is an abstract C++ wrapper around transport mechanisms that include intra-host IPC and network transport protocols such as TCP and XTP. A prototype implementation of this model is described using the Common Object Request Broker Architecture. The implementation environment comprises a local area ATM network with directly attached multimedia peripherals and general purpose workstations.

Paper Details

Date Published: 25 March 1996
PDF: 8 pages
Proc. SPIE 2667, Multimedia Computing and Networking 1996, (25 March 1996); doi: 10.1117/12.235882
Show Author Affiliations
B. J. Murphy, Univ. of Cambridge (United Kingdom)
Glenford E. Mapp, Olivetti Research Lab. (United Kingdom)


Published in SPIE Proceedings Vol. 2667:
Multimedia Computing and Networking 1996
Martin Freeman; Paul Jardetzky; Harrick M. Vin, Editor(s)

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