电信科学 ›› 2011, Vol. 27 ›› Issue (8): 84-88.doi: 10.3969/j.issn.1000-0801.2011.08.020

• 研究与开发 • 上一篇    下一篇

基于通用DSP的视频解码器的优化实现

宋建斌1,詹舒波1,马丽2   

  1. 1 北京邮电大学网络与交换技术国家重点实验室 北京 100876
    2 北京联合大学自动化学院 北京 100101
  • 出版日期:2011-08-15 发布日期:2011-08-15
  • 基金资助:
    国家自然科学基金资助项目;北京邮电大学博士后基金资助项目

Optimization Implementation of Video Decoder Based on General DSP

Jianbin Song1,Shubo Zhan1,Li Ma2   

  1. 1 State Key Laboratory of Networking and Switching Technology in BUPT,Beijing 100876,China
    2 Automation College,Beijing Union University,Beijing 100101,China
  • Online:2011-08-15 Published:2011-08-15

摘要:

随着多媒体和网络技术的发展,视频监控、智能手机等嵌入式系统得到了广泛应用。嵌入式平台资源有限,结构特殊,加上视频解码计算复杂,导致嵌入式平台上视频解码器的优化实现难度大、周期长。基于TMS320C6416通用DSP平台,给出了一套完整的移植优化方法,该方法依次从算法级、结构级和代码级进行优化,实现了解码速度快、恢复视频质量好的MPEG-4解码器。测试表明,该解码器可以对D1视频进行两路以上实时解码,本文方法典型、有效,对于通用芯片上编解码器的移植优化具有参考意义。

关键词: 视频解码器, DSP, MPEG-4, 移植优化

Abstract:

With the development of the multimedia and network technology,video applications such as VOD,video-phone etc.are used more and more widely in our life.We implement and optimize the MPEG-4 decoder based on TMS320 c6416 DSP for its high performance and easy implementation.Based on the architecture and instruction characteristic of the DSP,structure-level,program-level,code-level optimization was conducted respectively.Experimental data show that the decoder implemented can decode video in real time efficiently.

Key words: video decoder, DSP, MPEG-4, optimization implementation

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