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Advanced H.264/AVC Encoder Optimizations on a TMS320DM642 Digital Signal Processor

Authors:

Dorian Schneider, Marco Jeub, Jun Zhou, and Li Song

Book Title:

Proceedings of International Conference on Digital Signal Processing (DSP)

Venue:

Santorini, Greece

Organization:

IEEE, IET, EURASIP

Publisher:

IEEE

Date:

July 2009

Pages:

1–4

ISBN:

978-1-42443-298-1

Language:

English

Abstract

This paper discusses the optimization of the H.264/AVC video encoder in the context of a modified software implementation on a Texas Instruments TMS320DM642 digital signal processor. Several algorithmic optimizations are proposed to improve time critical parts of the codec like the quantization step and the pixel interpolation. The algorithms proposed in this paper invoke the enhanced direct memory access (EDMA) controller, intrinsics and look-up tables to accelerate the encoding and do not affect the image peak signal-to-noise ratio (PSNR) or compression performance. The computational acceleration gain of these algorithms are the foundation of our real time 30 CIF frames/second baseline implementation.

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