基于AVS的软硬件协同可变长码解码器设计

计算机科学 ›› 2010, Vol. 37 ›› Issue (7): 291-295.

基于AVS的软硬件协同可变长码解码器设计

刘玮，陈咏恩，许苑丰

(同济大学通信软件及专用集成电路设计中心上海200092)

出版日期:2018-12-01 发布日期:2018-12-01

Hardware/Software Partitioning VLD Design Based on AVS

LIU Wei,CHEN Yong-en,XU Yuan-feng

Online:2018-12-01 Published:2018-12-01

摘要/Abstract

摘要： 提出一种基于软硬件协同方法的AVS可变长码解码器结构设计。定长码、指数哥伦布码及AVS视频标准特有的基于内容自适应二维可变长码(CA-2I}VLC)均可在该解码器上实现正确解析。通过对19张可变长码表的优化整合，提出一种新的码表设计方法。经验证，新码表相较使用原始码表可将硬件消耗降低30%以上。为确保整个系统设计的合理性和正确性，以RM52J为蓝本编写针对本解码器的验证器，通过对92个一致性测试码流序列解析对比，表明本设计满足AVS视频解码要求。

关键词: AVS，软硬件协同，可变长码，CA-2D- VLC

Abstract: Architecture with Hardware/Software co-design for AVS Variable Length Code ( VLC) decoding was designed. Fixed Length Code, k-th Exp-Golomb Code and context based adaptive 2I}VLC (CA-2I}VLC) Code were decoded correctly on the platform. New design method for VLC table was presented, which was the optimization of nineteen original tables. As a result of the logical design and large amount of instructions decrease, a reduction of more than 30% in hardware consumption was achieved. Verifier based on RM52J was proposed as well to validate the rationality and validity of the whole system. Tested by ninety-two streams, this design was proved to reach the requirement of AVS video decoding.

Key words: AVS, HW/SW co-design, Variable length code, CA-2D-VLC

刘玮，陈咏恩，许苑丰. 基于AVS的软硬件协同可变长码解码器设计[J]. 计算机科学, 2010, 37(7): 291-295. https://doi.org/

LIU Wei,CHEN Yong-en,XU Yuan-feng. Hardware/Software Partitioning VLD Design Based on AVS[J]. Computer Science, 2010, 37(7): 291-295. https://doi.org/

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