An Efficient Multi-Core SIMD Implementation for H.264/AVC Encoder. (29th May 2012)

• Record Type: Journal Article
• Authors: Bariani, M.; Lambruschini, P.; Raggio, M.
• Other Names: Shafique Muhammad Academic Editor.
• Is Part Of: VLSI design. Volume 2012(2012)
• Publication Date: 2012-05-29
• Subjects: Integrated circuits -- Very large scale integration -- Periodicals; 621.395
• DOI: 10.1155/2012/413747
• Languages: English
• ISSNs: 1065-514X

Abstract

Abstract : The optimization process of a H.264/AVC encoder on three different architectures is presented. The architectures are multi- and singlecore and SIMD instruction sets have different vector registers size. The need of code optimization is fundamental when addressing HD resolutions with real-time constraints. The encoder is subdivided in functional modules in order to better understand where the optimization is a key factor and to evaluate in details the performance improvement. Common issues in both partitioning a video encoder into parallel architectures and SIMD optimization are described, and author solutions are presented for all the architectures. Besides showing efficient video encoder implementations, one of the main purposes of this paper is to discuss how the characteristics of different architectures and different set of SIMD instructions can impact on the target application performance. Results about the achieved speedup are provided in order to compare the different implementations and evaluate the more suitable solutions for present and next generation video-coding algorithms.