基于OMAP3530多媒体终端设备的软件设计与实现

发布时间：2018-12-15 05:29

【摘要】：近年来,多媒体技术得到迅猛发展,多媒体技术以其极强的渗透力进入到人类生活的方方面面,在游戏娱乐、教育培训、商业、信息、工程模拟以及服务等领域,多媒体技术正在发挥着越来越大的作用。特别是近年来,多媒体技术正以前所未有的势头飞速发展和不断完善。对多媒体技术的研究具有重要的现实意义和很高的研究价值。本文将嵌入式技术和多媒体技术相结合,对嵌入式多媒体技术进行了研究,设计与实现了基于OMAP3530多媒体终端设备上的多媒体播放系统。该系统采用的硬件平台是TI公司提供的OMAP3530芯片,OMAP3530集成了ARM Cortex A8内核、TMS320C64x+DSP、图形引擎、视频加速器以及丰富的多媒体外设。对于一些运算量大的实时信号,例如,图像、视频、音频数据,可以采用DSP进行计算,而对于通信、外设控制等功能,则用ARM核来实现,从而在功耗和复杂应用之间建立了良好的平衡。在软件平台方面,本系统采用了开源的Linux系统并在此基础上搭建了DVSDK (Digital Video Software Development Kit)开发环境。DVSDK是TI公司提供的Linux数字视频软件开发套件,它可以使开发人员轻松利用DSP加速编解码器,而无需对DSP进行编程,加速了基于Linux的多媒体应用的开发。首先,本文对多媒体技术及OMAP平台进行了认真研究,对OMAP3530EVM的主要功能模块也作了简单介绍。然后在硬件平台的基础上,完成了DVSDK开发环境的安装搭建,交叉编译了XLoade、UBoot、Kernel以及Angstrom文件系统。接着,本文着重研究了图形用户界面框架Qt以及Linux系统上的多媒体框架GStreamer,在它们的基础上设计并实现了多媒体播放器。最后,对整个系统进行了功能测试。测试结果表明,该播放器满足大多数媒体播放的要求,达到了预期的效果。
[Abstract]:In recent years, multimedia technology has been developed rapidly. With its strong penetration, multimedia technology has entered every aspect of human life, in the fields of game and entertainment, education and training, commerce, information, engineering simulation and service, etc. Multimedia technology is playing a more and more important role. Especially in recent years, multimedia technology is developing and improving at an unprecedented speed. The research on multimedia technology has important practical significance and high research value. In this paper, the embedded multimedia technology is combined with multimedia technology, and a multimedia playback system based on OMAP3530 multimedia terminal equipment is designed and implemented. The hardware platform of this system is OMAP3530 chip provided by TI. OMAP3530 integrates ARM Cortex A8 kernel, TMS320C64x DSP, graphics engine, video accelerator and rich multimedia peripherals. For some real time signals, such as image, video, audio data, which need a lot of computation, they can be calculated by DSP, while for communication, peripheral control and other functions, they can be realized by ARM core. Thus a good balance between power consumption and complex applications is established. In the aspect of software platform, this system adopts the open source Linux system and builds the DVSDK (Digital Video Software Development Kit) development environment on this basis. DVSDK is the Linux digital video software development suite provided by TI company. It makes it easy for developers to make use of DSP to accelerate codec without programming DSP, thus speeding up the development of multimedia applications based on Linux. Firstly, the multimedia technology and OMAP platform are studied in this paper, and the main function modules of OMAP3530EVM are also briefly introduced. Then on the basis of the hardware platform, the installation of the DVSDK development environment is completed, and the XLoade,UBoot,Kernel and Angstrom file system are cross-compiled. Then, this paper focuses on the graphical user interface framework (Qt) and the multimedia framework (GStreamer,) on the Linux system. Based on them, a multimedia player is designed and implemented. Finally, the function of the whole system is tested. The test results show that the player meets the requirements of most media and achieves the desired results.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP368.1;TP311.52

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