基于TMS320DM3730的H.264编码器移植与优化方法研究  

Research on the transplantation and optimization of H.264 encoder based on the TMS320DM3730

作　　者：向海波[1] 李波[1] 闫中江[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《电子设计工程》2012年第23期180-183,共4页Electronic Design Engineering

基　　金：国家自然科学基金资助项目(60872045;60572144);西安市科技计划项目资助(CX1258(4))

摘　　要：提出了一种在TI公司高性能数字信号处理器TMS320DM3730上进行H.264编码器(即x264编码器)移植与优化的方法,详细描述了在CCS4.2开发平台上进行x264编码器移植工作的基本原理和需要注意的问题。为了提高编码速度,针对DM3730处理器的结构特点,对x264编码器进行了优化,主要方法包括编译器优化、内存优化、C语言代码优化及汇编代码优化。对x264编码器进行的CIF格式编码测试结果表明,在均值信噪比略微降低的前提下,编码速度得到了显著提高,因此获得了更优的编码效率。A method of transplantation and optimization of the H.264 encoder i.e. x264 encoder, based on. the TI TMS320DM3730 is proposed. The basic＇principles and the problems might be considered in the process of the transplantation based on the CCS4.2 development platform are described in detail. To improve the encoding speed, the x264 encoder is specifically optimized in accordance with the structural characteristics of TMS320DM3730, with the help of the compiler optimization, the memory optimization, code optimizations at both C language level and the assembly language level. Experimental results show that, for the video sequences with CIF format, although the SNR is slightly reduced, the encoding speed of the optimized x264 encoder is significantly improved, and hence higher encoding efficiency can be achieved.

关 键 词：TMS320DM3730 H 264标准 x264编码器 移植与优化 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]