Analysis and verification of SMIL documents |
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Authors: | Ombretta Gaggi Annalisa Bossi |
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Affiliation: | (1) Deparment of Pure and Applied Mathematics, University of Padua, via Trieste, 63, 35121 Padua, Italy;(2) Department of Computer Science, University Ca’ Foscari of Venice, via Torino, 155, 30172 Mestre, Venice, Italy |
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Abstract: | In this paper, we consider the problem of automatic verification of SMIL documents and present a tool which can assist the user in the complex task of authoring a multimedia presentation. The tool is based on a formal semantics defining the temporal aspects of SMIL elements by means of a set of inference rules. The rules, in the spirit of Hoare’s semantics, describe how the execution of a piece of code changes the state of the computation of a player. If any temporal conflict is found, the system returns a message to the user pointing out the element which contains the conflict and its motivation. This helps the user to develop robust and clear code. |
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