Software synthesis of CAL actors for the MPEG reconfigurable Video Coding framework

Ghislain Roquier (1) , Matthieu Wipliez (1) , Mickael Raulet (1) , Jean François Nezan (2) , Olivier Déforges (1)

1 IETR - Institut d'Electronique et de Télécommunications de Rennes
2 IETR - Institut d'Électronique et des Technologies du numéRique

The MPEG Reconfigurable Video Coding (RVC) framework aims to provide a unified specification of all video technology. In this framework, a decoder is modularly built as a configuration of video coding tools taken from the MPEG toolbox library. The elements of the library are specified using the CAL Actor Language. CAL is a dataflow based language providing computation models that are concurrent and modular. This paper presents a synthesis tool that from a CAL specification generates C code. Indeed, code generators are fundamental supports for the deployment and success of the MPEG RVC framework. This paper focuses on the automatic translation of a CAL actor. This approach has been used to obtain a C implementation of the inverse DCT module which is part of the MPEG-4 Simple Profile decoder, chosen by MPEG experts to validate the RVC approach. The generated code is validated against the original CAL description and simulated using the Open Dataflow environment.

Mots clés: MPEG RVC; CAL Actor Language; dataflow modeling; software synthesis

Domaines: Multimédia [cs.MM]; Calcul parallèle, distribué et partagé [cs.DC]; Génie logiciel [cs.SE]

Ghislain Roquier, Matthieu Wipliez, Mickael Raulet, Jean François Nezan, Olivier Déforges. Software synthesis of CAL actors for the MPEG reconfigurable Video Coding framework. Image Processing, 2008. ICIP 2008. 15th IEEE International Conference on, Oct 2008, San Diego, United States. pp.1408 - 1411, ⟨10.1109/ICIP.2008.4712028⟩. ⟨hal-00336481⟩