Multimedia Processing Library Optimization Study On The Dm642

The modern society is rapidly developing to information society, while multimedia is one of the most important technologies during the development. Multimedia technology has merged into many aspects of the national economy. With the standardization of multimedia processing techno-Logy, some module, such as the SAD, exist in always every multimedia system. As the result, we conclude a multimedia processing library based on DSP, which facilitate the multimedia system development based on DSP.Cuurently, the implementation of the multimedia system is as follows: (1) multimedia system based on the PC. (2) using the ASIC chip for multimedia system. (3) using the DSP especially for the digital multimedia. The hardware structure of DSP processor core is especially designed for multimedia data processing. Not only plentiful multimedia data processing instructions are available, but also it is more flexible for implementation of multimedia syatem processing. The implentment using DSP can shorten the time to market and offer convenience for upgrading and reprogramming. DM642 is the new generation data signal processor especially for multimedia processing, which offer s industry-leading performance. At the 600 MHz, DM642 offers the processing capability of the 4800 MIPS. So, DM642 is an ideal platform for multimedia applications.First, the multimedia processing library is proposed. The multimedia processing library is encapsulated in several level functions. The lower function can constructed the higher function. Secondly, DM642, which is the physical basement for the optimization of the library, is anlaysed. And the follows is the emphases of the paper. After introducing CCS, which is software platform for the optimization, the motheds, which are used to optimize the multimedia processing library are presented. The methods cover three aspects: the adjustment of CODEC framework; the setting of memory allocation; the optimization of the codes. In the end, there is about conclusion and tasks in the future-...