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流媒体应用已成为移动互联网的重要组成部分,当前流媒体服务器众多,但支持流媒体音视频切换矩阵的流媒体服务器并不多见.论文以达尔文流媒体服务器(Darwin Streaming Server,DSS)为基础,通过分析DSS二次开发接口以及DSS中文件处理和中继处理等相关模块的源码,在DSS中添加矩阵切换相关功能模块,并对其原有模块进行扩展,设计实现了一种支持多种输入类型、多通道的流媒体切换矩阵.切换矩阵可通过电子节目单控制矩阵切换输出多种类型的网络频道流.最后,通过对切换矩阵性能参数的实验分析,表明矩阵切换的切换时延和时间精度均符合网络广播的要求.
The application of streaming media has become an important part of mobile Internet, but there are not many streaming media servers currently supported by streaming media servers, but streaming media servers that support streaming audio and video switching matrix are rare.Studies are based on Darwin Streaming Server (DSS) , By analyzing the DSS secondary development interface and DSS file processing and relay processing and other related modules of the source code in the DSS matrix switching to add the relevant functional modules and expand its original module designed to achieve a support for a variety of Input type and multichannel streaming media switching matrix.The switching matrix can output various types of network channel streams by controlling the matrix switch of the electronic program list.Finally, the experimental analysis of switching matrix performance parameters shows that the switching delay of matrix switching and Time accuracy are in line with the requirements of Internet radio.