[1]刘贤梅,任重. H .265视频编码器在TMS320 C6678上的优化实现[J].计算机技术与发展,2015,25(03):171-174.
　LIU Xian-mei,REN Zhong. Optimized Realization on TMS320C6678 of H. 265 Video Encoder[J].,2015,25(03):171-174.
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 H .265视频编码器在TMS320 C6678上的优化实现()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
25
期数:
2015年03期
页码:
171-174
栏目:
应用开发研究
出版日期:
2015-03-10

文章信息/Info

Title:
 Optimized Realization on TMS320C6678 of H. 265 Video Encoder
文章编号:
1673-629X（2015)03-0171-04
作者:
 刘贤梅; 任重
 东北石油大学 计算机与信息技术学院
Author(s):
 LIU Xian-mei; REN Zhong
关键词:
 ; TMS320C6678; H.265; 汇编优化; 结构优化
Keywords:
 ; TMS320C6678 ; H. 265; assembly optimization; structural optimization
分类号:
TP391
文献标志码:
A
摘要:
 H.265是新一代视频编码标准，与第二代视频标准AVS和H.264相比可提升1倍的编码效率，但其复杂度也随之提升了4倍以上，给H.265的DSP嵌入式实时实现带来挑战。文中为实现DSP实时视频编码，通过对H.265视频编码算法复杂度进行分析，并基于TI公司的TMS320C6678 DSP芯片，从使用快速算法、针对芯片特点进行结构优化和使用汇编加速指令及重新安排指令流水线三个层次进行优化实现。实现结果表明，所提出的优化方法可以获得25倍的视频编码速度的提升，实现了D1分辨率视频的H.265实时编码处理。该方法可进一步扩展获得更高的编码速度的提升。
Abstract:
 he H. 265 standard is the newest video coding standard,which can increase one time compared with H. 264 and AVS which is the second generation video standard,but the time complexity is also improved more than 4 times,which brings a challenge to the real-time implementation of DSP for H. 265. In this paper,to achieve the real-time video encoding on DSP platform,through the analysis of complexity for H. 265 video encoding algorithm,and based on the TMS320C6678 DSP chip of TI company,the optimized implementa-tion is carried out from three levels that are including conducting structure adjustment in accordance with chip feather,using assembly ac-celerating instruction and rearranging the pipeline. The results show that the proposed optimization method can improve the speed of enco-ding 25 times,and can support H. 265 real-time encoding by D1 resolution. The proposed method can be further extended to obtain high-er encoding speed.

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更新日期/Last Update: 2015-05-04