面向嵌入式媒体处理体系结构的SPUR编程模型  

SPUR Programming Model for to Embedded Media Processing Architecture

作　　者：张丹[1] 李增智[1] 王海[1] 

机构地区：[1]西安交通大学计算机科学与技术系,西安710049

出　　处：《西安交通大学学报》2006年第8期869-873,共5页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金资助项目(60173059)

摘　　要：针对嵌入式媒体处理体系结构的编程复杂性,提出了SPUR编程模型,即将媒体数据及其运算自然地表示为媒体流和相应的操作符,利用媒体流数据类型、组合数据类型、媒体操作符和特殊控制流等关键扩展以显式开发细粒度的数据并行性,并将媒体处理算法重构为SP-C编写的高级部分和UR-C编写的低级部分.通过对编译器原型系统和典型媒体应用微代码例程的目标代码效率和尺寸进行测量,结果表明,SPUR模型能针对媒体应用提供高级抽象,从而简化了媒体应用程序的编写,提高了程序的可读性、鲁棒性和开发效率,特别是为硬件体系结构提供了合理的映射,便于编译器优化设计,而且目标代码质量也比较高.The SPUR programming model was proposed for solving the programming complexity of the embedded media processing architecture. In SPUR model, media data and its operations were presented as media streams and corresponding operation symbols naturally. The fine-grained data parallelisms were exploited explicitly by using key extensions such as media stream types, combination data types, media operators and special control flows, and the media processing algorithm was reconstructed into the high-level part written by SP-C and the low-level part written by UR-C. Through measuring the efficiency of object-code and code size of microcode routines in the prototype compiler and typical applications, the experimental results show that SPUR model can provide a high-level abstraction for media applications, then simplifies the writing of the media application and improves the readability, robustness and development efficiency of the programs; especially, it provides the proper mapping of hardware architecture so as to optimize the design of compiler, and the quality of object-code is much higher.

关 键 词：媒体流 目标代码 媒体处理 编程模型 

分 类 号：TP314[自动化与计算机技术—计算机软件与理论]