The Design, Based On Directx, Audio And Video Player Software

The Object of this dissertation is the media player control system based on DirectX technology. The dissertation is focused on the design and the implementation of the framework of the control . First, generally introduce the whole system. Second, discuss the detail information of the internal structure of each module, including how to display an image using DirectShow, how to play an audio stream using DirectSound, the maintainance of the state machine, how to dedign the thread in the module. Third, based on the whole system, discuss how to synchonize video and audio and how to apply all the play control functions. At last, give the whole system test procedure and all test result.Chapter 1 gives a description about the research work's significance and a brief view of the DirectX technology, ActiveX technology, and DVR system's actuality and the developing tendency.Chapter 2 generally talked about DirectX technology and compares DirectShow with DirectDraw.Chapter 3 described the whole system's framework, and discussed how to design and implement the interfaces of the system.Chapter 4 from the basement, particularly talked about the implementation of all modules, mostly focused on how to display images in display module, and how to play audio stream in audio module.Chapter 5 talked about how to synchronise audio and video, the detailed information about play control functions, and the maintainace of the state machine when play status jump from one special mode to another.Chapter 6 shows when 4 source D1 image played simultaneouslly, the test result of the whole system, including network capacity, decoding capacity, test environment, test procedure, and test result.Chapter 7 draw a conclusion of the whole dissertation. The prospect of the optimization for acquisition and transferring system is also made.