Player Based On Directshow Audio And Video Streaming System Design And Encryption Technology

With the rapid development of multimedia technology and internet technology, the application of multimedia systems are more and more widely used is real life. And also today's computer technology and the rapid development of Internet technology also makes streaming media become a hot technology.In this thesis, based on the characteristics of multi-media system, as streaming play mechanism is sensitive to network performance, we perform a multi-media system that contain both streaming media play mechanism and local media file play mechanism. The system not only can overcome the sensitivity to the network performance, but also and overcome the shortcoming that local file play mechanism can not meet the real-time play, these mechanism make the multi-media system can provide good services even in poor network circumstances. And for multimedia data applications in daily lift growing popularity may be encountered in the course of the security issues, this thesis implement a streaming media encryption algorithm to guarantee for the security effectively. Otherwise, this thesis also studies Alpha-blending technology. When playing video in the client, we can selectively superimpose the image to the video as we wish to add additional information on the further expand of multi-media system.In the thesis, on the basis of the research, we select DirectShow technology as the development framework, design and implement the multi-media system based on the EPIA-CN motherboard and VIA C7 processor. The thesis describes requirements analysis of the entire system, function designing and module developing thoroughly. The system performs very well in our testing. It is indeed an outstanding application of multimedia system.