Design And Implementation Of Wireless Streaming Media System Based On OMAP5910

With the vigorous development of electronic technology recent years, people's needs of communication services become higher and higher. People have not been satisfied with audio services through the wireless terminal like hand phones, or the streaming media program through PC. They wish to enjoy the wireless real time video services. On the other word, they want to enjoy the wireless streaming media services. Nowadays, with the development of wireless communication, 3G, WLAN are used in business. The new signal processing algorithms, like MPEG4, H.264, come out. And the high performance and low power processors emerge. All of them made this wireless streaming media services on portable terminal possible. Just because of this needs, a kind of wireless streaming media terminal based on OMAP5910 is proposed, whose is aim is implementing wireless, real time streaming media transmission and play.On the hardware aspect, dual core processor, OMAP5910 is used as the core processor in the resolution. It connects with the network interface module through EMIF interface, and connects with touching LCD screen through LCD interface, and connects with SD card through MMC/SD interface. On the software aspect, the embedded Linux system is installed as the operating system. MMU interface and the allocation of memory are designed. The command of mailbox for communication between ARM and DSP also was designed. The flow of Audio/Video decoding was given detailedly. Additionally, the paper implemented the extraction and analysis of the header of AVI according to AVI RIFF format by programming.The experimental result shows that, through the programming and optimizing of the software of both the ARM core and the DSP core on OMAP5910, the real time streaming media transmission and play can be implemented. The size of the video is 176×144 and the rate is 25 frame per second.