摘要
本文结合C64系列DSP芯片的特点,讨论基于TMS320DM642 DSP的MPEG-4视频实时编码算法实现和优化方法。优化通过修改适于DSP的数据结构,有效地分配片上核心内存,合理应用EDMA、缓存Cache、线性汇编、软件流水、CCS优化工具等多种方法综合来完成。实验结果证明,这些方法提高了程序的并行性和存储器的访问效率,优化过的编码器可以实现实时编码。
The realization and optimization of MPEG-4 encoding algorithm based on TMS320DM642 DSP are proposed. In order to realize the real-time system, many methods are used, e.g., modification of data structure, effective assignment of core memory on chip, skillful configuration of EDMA and Cache, linear assemble language, software pipeline, and optimizing tools of CCS. Experimental results show that the optimized encoder can operate well in real time.
基金
重庆大学自然科学基金(2007CD056)
关键词
图像信息处理
移植
优化
图像编码
image information process
transplant
optimization
image encode
