基于DM36x平台的音视频网络通信的设计与实现

Design and implementation of audio and video communication over Internet based on DM36x platform

针对嵌入式多媒体设备设计了一款音视频网络通信系统,实现了对嵌入式设备的集中管理和远程控制。该系统采用DM36x作为硬件处理器,运行Linux操作系统。针对音视频数据的采集,流媒体服务器和嵌入式Web服务器的设计和配置以及CGI外部扩展程序的设计进行了详细的阐述。针对高清视频数据网络传输的压力,改进了流媒体数据传输协议,实现了RTSP流媒体服务器的大容量流畅通信。测试结果显示系统在低带宽和复杂网络环境条件下仍能获得很好的音视频效果,实时性和稳定性好。

In this paper,an system of audio and video data communication over the Internet was designed for embedded multimedia device.This system implemented the centralized management and remote control of embedded device.The system used DM36x as the processor of its hardware platform,running Linux operation system.The collection of audio and video data,the design and configuration of streaming media server and embedded Web server and design of CGI programs were introduced in the paper.Considering the transfer pressure of high-definition video data over the Internet,the transfer protocol of multimedia data has been improved and this improvement makes the RTSP streaming media server achieve a large capacity and smooth communication.The test results have proved that users can get good result,fine real-time and stability under conditions of low bandwidth and complex network environment.