【作者】 摆云；

【导师】 张冠茂； 周荣洁；

【作者基本信息】 兰州大学 ， 电子与通信工程， 2012， 硕士

【摘要】 随着信息技术的快速发展,以嵌入式技术为依托,以网络、通信技术为平台的网络音视频传输技术已经越来越成熟,应用范围越来越广泛。另一方面,基于Linux开放性内核的Android手机操作系统近来受到人们的青睐,越来越多的开发者将目光投向Android应用开发,基于无线网络的开发应用层出不群。于是以Android手机开发系统和网络应用为基础的无线音视频传输系统应运而生。本文首先介绍了无线视频传输的相关技术及研究现状,阐述了Android手机开发平台的系统框架,对本文所涉及到的JNI(Java本地调用)、Android NDK、 FFmpeg(音视频处理解决方案)、流媒体传输协议等相关概念做了简单介绍。本文以Android手机开发平台为基础,通过分析无线音视频传输系统的工作原理,提出了无线音视频传输系统的设计方案。本文将开源的FFmpeg音视频解决方案移植到Android平台,作为音视频数据的编解码库；对系统所用到的与Android相关的API进行了研究和分析,对系统实现过程中还用到的其它技术做了分析说明。最后实现了android平台上的音视频无线传输系统,该系统与传统的网络音视频通信系统相比无需布线成本低廉,应用场合广泛,可以应用于家居安防监控、网络终端即时通信等。更多还原

【Abstract】 With the rapid development of information technology, the transmission technology of the audio and video based on embedded system and network, has become mature and widely used.So are the Linux open-kernel-based Android mobile operating system and applications based on wireless network. Thus the wireless audio and video transmission system based on the Android mobile phone development system and network application come into view.This paper introduced the wireless audio and video transmission technology and research status, the system framework of the Android mobile development platform, and relevant concepts, such as the Java Native Interface (JNI), the Android NDK, Fast Forward mpeg (FFmpeg,the audio and video processing solutions) and Streaming Media Transfer Protocol as well.After analysis of the working principle of the wireless audio and video transmission system, this paper presents the design of the wireless audio and video transmission system based on the Android mobile development platform.The design transplant the FFmepg audio and video solutions to the Android platform as the codec library of audio and video data.It applies the Android APIs.Besides, the paper analyzes and explains other technologies used in the system implementation process.The paper implemented the wireless audio and video transmission system based on the Android platform. Compared with the traditional audio and video network communication system, it has advantages such as wireless, lower cost and greater availability.It can be applied in home security monitoring and instant messaging of network terminals.更多还原