An adaptive pipelining scheme for H.264/AVC CABAC decoder  

作　　者：陈杰 Ding Dandan Yu Lu 

机构地区：[1]Institute of Information and Communication Engineering,Zhejiang Provincial Key Laboratory of Information Network Technology,Zhejiang University

出　　处：《High Technology Letters》2013年第4期391-397,共7页高技术通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61076021);the National Basic Research Program of China(No.2009CB320903);China Postdoctoral Science Foundation(No.2012M511364)

摘　　要：An adaptive pipelining scheme for H.264/AVC context-based adaptive binary arithmetic coding(CABAC) decoder for high definition(HD) applications is proposed to solve data hazard problems coming from the data dependencies in CABAC decoding process.An efficiency model of CABAC decoding pipeline is derived according to the analysis of a common pipeline.Based on that,several adaptive strategies are provided.The pipelining scheme with these strategies can be adaptive to different types of syntax elements(SEs) and the pipeline will not stall during decoding process when these strategies are adopted.In addition,the decoder proposed can fully support H.264/AVC high4:2:2 profile and the experimental results show that the efficiency of decoder is much higher than other architectures with one engine.Taking both performance and cost into consideration,our design makes a good tradeoff compared with other work and it is sufficient for HD real-time decoding.An adaptive pipelining scheme for H.264/AVC context-based adaptive binary arithmetic coding （CABAC） decoder for high definition （HD） applications is proposed to solve data hazard problems coming from the data dependencies in CABAC decoding process.An efficiency model of CABAC decoding pipeline is derived according to the analysis of a common pipeline.Based on that,several adaptive strategies are provided.The pipelining scheme with these strategies can be adaptive to different types of syntax elements （SEs） and the pipeline will not stall during decoding process when these strategies are adopted.In addition,the decoder proposed can fully support H.264/AVC high 4 ∶ 2 ∶ 2 profile and the experimental results show that the efficiency of decoder is much higher than other architectures with one engine.Taking both performance and cost into consideration,our design makes a good tradeoff compared with other work and it is sufficient for HD real-time decoding.

关 键 词：H.264/AVC context-based adaptive binary arithmetic coding （CABAC） ADAPTIVE PIPELINE data dependency data hazard 

分 类 号：TN919.81[电子电信—通信与信息系统] TP333.35[电子电信—信息与通信工程]