基于Android的视频会议系统中若干关键技术的研究与实现

发布时间：2018-01-09 02:27

本文关键词：基于Android的视频会议系统中若干关键技术的研究与实现　出处：《华南理工大学》2016年硕士论文　论文类型：学位论文

更多相关文章： 视频会议 Cocos2d-x Android XMPP NDK

【摘要】：现代视频会议不但利用语音、视频模拟真实会议的发言与图像,而且利用数据传输技术弥补传统会议只能听和说的弊端,使视频会议能进行电子白板、桌面共享、协同浏览等数据协作功能的应用。同时移动互联网的迅速普及和飞速发展,使得视频会议系统由原来单一的PC终端形式,进入到多终端形式的时代。视频会议系统不仅可在电脑上使用,还可以在智能手机上进行,这意味着视频会议通信可以出现在更多的场合上。本文内容来源于真实的视频会议系统项目。系统以软件开发为主,提供了PC版、Android版、iOS版和Web版。本系统的基本功能包括语音通信、视频通信、电子白板、桌面共享、远程聊天、协同浏览等。其中,电子白板、桌面共享、远程聊天、协同浏览可以在视频会议系统中归类为数据协作功能。此外,整个视频会议系统中根据功能需求、开发难度、可扩展性等因素,决定使用XMPP协议作为系统的主要数据通信协议。本人主要在Android客户端研究与实现以上提及的数据协作功能中的若干功能模块所涉及的关键技术。本文的核心工作包括:(1)研究XMPP协议的原理特点,应用到Android客户端作为信令和多媒体数据传输的协议。(2)学习并运用Android编程开发技术以实现所负责的功能模块,项目本身同时使用C++和Java进行开发,使用NDK工具实现两类代码交互。(3)应用Cocos2d-x引擎开发电子白板的核心功能,并对减少数据传输量的优化方案进行了研究。(4)研究VNC的交互机制、像素编码方案和Android的图像显示机制,以实现桌面共享的功能。(5)研究Android的存储机制,用于存储应用程序的数据和状态。本文最后对所研究的关键技术的实现部分进行了一系列的功能测试和性能测试。测试结果表明,所负责的功能模块的关键技术的研究与实现是正确和有效的。
[Abstract]:Modern video conference not only by speech, speech and image simulation of real video conference, and the use of data transmission technology to make up for the traditional meeting only listening and speaking problems, can make the video conference whiteboard, desktop sharing, collaborative browsing data collaboration function. At the same time the rapid popularization of mobile Internet and the rapid development of the video conference the PC system consists of terminal form of the original single, into a multi terminal form time. Video conferencing system not only can be used on the computer, but also in the intelligent mobile phone, which means that the video conference communication can appear on more occasions. The content of this paper comes from the project of video conference system. The real system by software based on the development, provides a PC version, Android version, iOS version and Web version. The basic functions of the system include voice communication, video communication, electronic whiteboard, remote desktop sharing, chat Day, CO browsing. The electronic whiteboard, remote desktop sharing, chat, collaborative browsing in the video conferencing system can be classified as data collaboration function. In addition, the video conference system based on the function demand, development difficulty, scalability and other factors, decided to use the XMPP protocol as the main data communication protocol of the system. I major in technology research and implementation of Android client above mentioned data collaboration function in several functional modules. The core of this paper includes: (1) the principle of XMPP protocol, the application to the Android client as signaling and multimedia data transmission protocol. (2) the learning and the use of Android programming technology the functional modules are responsible for the project itself, while using C++ and Java development, the realization of the two class code interaction using NDK tools. (3) the development of electronic application of Cocos2d-x engine The core function of the board, and to reduce the amount of data transmission optimization scheme is studied. (4) the interaction mechanism of VNC, the image pixel encoding scheme and Android display system, in order to achieve desktop sharing function. (5) the storage mechanism of Android, used to store application data and the state at the end of this paper. The key technology of the realization of the function test and performance test of a series of key technologies. The test results show that the function module is responsible for the research and implementation is correct and effective.

【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN948.63;TP316

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