现代电子技术2024，Vol.47Issue(10)：86-90,5.DOI:10.16652/j.issn.1004-373x.2024.10.016
基于威焱831平台的H.264视频解码优化
H.264 video decoder optimization based on Weiyan 831 platform
王聪 1张昊 1刘世巍 1黄朴1
作者信息
- 1. 中电科申泰信息科技有限公司,江苏 无锡 214125
- 折叠
摘要
Abstract
In order to improve the capability of multimedia processing and the decoding efficiency of H.264 decoder on Weiyan 831,an optimization method for frame copy is proposed while the SIMD instruction level optimization method is proposed.By analyzing the parallel characters of the H.264 decoder in the open source Ffmpeg,the performance analysis tool on Weiyan platform is used to analyze the hot functions that influence the video decoding.The key module hotspot functions are optimized by manually embedding SIMD assembly instructions,and the memory operation function memcpy is implemented by means of FFmpeg source code compilation linked to assembly,so as to improve memory copying speed.The experimental results show that the average video decoding performance on Weiyan 831 platform is improved by up 26%,which can effectively promote the development of Weiyan 831 processors in multimedia applications.关键词
威焱831平台/SIMD/H.264解码器/FFmpeg/热点函数/解码效率Key words
Weiyan 831 platform/SIMD/H.264 decoder/FFmpeg/hotspot function/decoding efficiency分类
信息技术与安全科学引用本文复制引用
王聪,张昊,刘世巍,黄朴..基于威焱831平台的H.264视频解码优化[J].现代电子技术,2024,47(10):86-90,5.
