基于龙芯平台流媒体服务的研究
发布时间：2018-07-25 11:51
【摘要】：龙芯是中国科学院计算所自主研发的高性能通用CPU,这改写了我国无“中国芯”的历史。江苏中科梦兰电子科技有限公司,是龙芯的产业基地和龙头企业,致力于用自主创新技术打造行业信息化整体解决方案。 本文主要研究在龙芯计算机的软硬件环境中实现的流媒体服务器的主要功能,通过对龙芯平台的性能分析,操作系统的设计优化,多媒体指令的优化,达到流媒体服务在Linux客户端以及windows客户端平台下的技术标准。在流媒体服务的技术方面采用了GStreamer多媒体框架实现流媒体服务的播放,openPGM作为流媒体服务的传输框架,加入了fec, qos等相关的性能优化方法。服务器端通过读取视频文件后通过解码器解码,再由通过编码器将视频流编码成H264格式,编码后的数据发送给客户端,客户端收到数据之后,进行fec的数据恢复,进行解码显示,最终能够同时实现对250个终端同时提供服务的方案。 通过本研究课题,可以进一步丰富龙芯平台上的应用,探索通过自主信息化手段提高国内教育现代化水平。
[Abstract]:Longson is a high performance universal CPU developed independently by the Institute of Computing of the Chinese Academy of Sciences, which rewrites the history of "China Core" in China. Jiangsu Zhongke Meng Lan Electronic Technology Co., Ltd. is the industrial base and leading enterprise of Longson. This paper mainly studies the main functions of streaming media server realized in the software and hardware environment of the Godson computer. By analyzing the performance of the Godson platform, optimizing the design of the operating system, optimizing the multimedia instruction, Meet the technical standard of streaming media service under Linux client and windows client platform. In the technical aspect of streaming media service, GStreamer multimedia framework is adopted to realize streaming media service playback openPGM as the transmission framework of streaming media service, and some related performance optimization methods, such as fecal, qos and so on, are added. The server reads the video file and decodes it by decoder, then encoder the video stream into H264 format. The encoded data is sent to the client. After the client receives the data, the data of fec is restored. Decoding shows that 250 terminals can be served simultaneously at the same time. Through this research, we can further enrich the application of Godson platform and explore how to improve the level of education modernization in China by means of independent information technology.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP332
本文编号：2143738
[Abstract]:Longson is a high performance universal CPU developed independently by the Institute of Computing of the Chinese Academy of Sciences, which rewrites the history of "China Core" in China. Jiangsu Zhongke Meng Lan Electronic Technology Co., Ltd. is the industrial base and leading enterprise of Longson. This paper mainly studies the main functions of streaming media server realized in the software and hardware environment of the Godson computer. By analyzing the performance of the Godson platform, optimizing the design of the operating system, optimizing the multimedia instruction, Meet the technical standard of streaming media service under Linux client and windows client platform. In the technical aspect of streaming media service, GStreamer multimedia framework is adopted to realize streaming media service playback openPGM as the transmission framework of streaming media service, and some related performance optimization methods, such as fecal, qos and so on, are added. The server reads the video file and decodes it by decoder, then encoder the video stream into H264 format. The encoded data is sent to the client. After the client receives the data, the data of fec is restored. Decoding shows that 250 terminals can be served simultaneously at the same time. Through this research, we can further enrich the application of Godson platform and explore how to improve the level of education modernization in China by means of independent information technology.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP332
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