Improvement of real-time properties of MPEG-4 encoder by DSP underlying structure
Guiju Li · 2011
As the real time properties of image compression can be improved by utilizing a DSP underlying structure,this paper optimizes the Mpeg-4 video encoder on a TMS320C6416 platform by the structure mentioned above.Optimizing methods include complying the assembly functions according to the characteristics of eight parallel execution functional units,optimizing the code and data memory space occupied by the encoder according to the features of DSP two-level cache,and adapting two buffers in memory by using the EDMA cascade characteristics to realize video data coding and transmission at the same time,which improves coding efficiency effectively.The experimental results show that the new encoder can realize encoding of gray scale video of 512 pixel×512 pixel at 30 frame/s in real time.