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ESTIMEDIA
2009
Springer

Software parallel CAVLC encoder based on stream processing

9 years 1 months ago
Software parallel CAVLC encoder based on stream processing
—Real-time encoding of high-definition H.264 video is a challenge to current embedded programmable processors. Emerging stream processing methods supported by most GPUs and programmable processors provide a powerful mechanism to achieve surprising high performance in media/signal processing, which bring an opportunity to deal with this challenge. However, traditional serial CAVLC has highly input-dependent execution and precedence constraints, which becomes a bottleneck to implement H.264 encoder efficiently. This paper presents a software parallel CAVLC encoder based on stream processing. Many approaches are explored to solve the restrictions of parallelizing CAVLC caused by data dependency and branch/loop instructions. Experiment results show that our parallel CAVLC encoder on two stream processing platforms of STORM and GPU achieves 3.03x and 2.08x speedup over the original serial CAVLC respectively. Finally, the proposed parallel CAVLC encoder coupled with stream processor enable...
Ju Ren, Yi He, Wei Wu, Mei Wen, Nan Wu, Chunyuan Z
Added 26 May 2010
Updated 26 May 2010
Type Conference
Year 2009
Where ESTIMEDIA
Authors Ju Ren, Yi He, Wei Wu, Mei Wen, Nan Wu, Chunyuan Zhang
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