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Software architecture for adaptive distributed multimedia systems

Software architecture for adaptive distributed multimedia systems

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To support multimedia applications in mobile environments, it will be necessary for applications to be aware of the underlying network conditions and also to be able to adapt their behaviour and that of the underlying platform. This paper focuses on the role of middleware in supporting such adaptation. In particular, we investigate the role of open implementation and reflection in the design of middleware platforms such as CORBA. The paper initially extends CORBA with the concept of explicit binding, where path of communication between objects is represented as first class objects. We then introduce the concept of open bindings which support inspection and adaptation of the path of communications. An implementation of open bindings for adaptive continuous-media interaction is described using the example of adaptive video-on-demand for mobile environments.

Inspec keywords: distributed object management; mobile computing; video on demand; software architecture; client-server systems; multimedia systems

Other keywords: open bindings; adaptive distributed multimedia systems; explicit binding; mobile environments; adaptive video-on-demand; middleware; adaptive continuous-media interaction; software architecture; open implementation; CORBA

Subjects: Distributed systems software; Object-oriented programming; Software engineering techniques; Multimedia

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