Enhancements of H.264 Encoder Performance Using Platform Specific Optimizations in Low Cost Dsp Platforms

Abstract

In this age of multimedia convergence, video based applications for conferencing and streaming are seeing big market traction. The main challenge of implementing these systems is a tradeoff between several factors like bandwidth, image quality, implementation cost and speed (in terms of Mega Cycles per second). Moreover to implement this Encoder-Decoder system (CODECs) in a real time system based on any Digital Signal Processor (DSP) is more difficult because of their restricted resources like memory and CPU speed. In this paper author has presented the platform specific optimization techniques for realization of a QCIF H.264 baseline encoder in a TMS320C55x DSP, which has only 256 KB RAM and 150 MHz clock speed. We achieve almost 60% MCPS reduction with respect to optimized reference encoder by applying these platform specific optimizations.