嵌入式车载流媒体播放终端设计与实现

Design and implementation of embedded on-board player terminal for streaming media

本文设计并实现了基于Au1250处理器的嵌入式流媒体播放终端。播放系统由流传输设施和解码终端组成。流传输设施主要实现媒体数据的传输,解码终端负责流媒体的音频、视频解码及播出。流传输层利用JRTPLIB开发库实现,解码终端采用嵌入式技术,通过MAI Engine实现媒体数据的解码播放。对于文本数据,直接交由上层应用程序的GUI显示。播放终端与媒体服务器之间通过以太网相连,采用RTP协议进行数据通信。

In order to implement playing multimedia with a streaming mode on vehicles,an embedded terminal for streaming media based on Au1250 processor was designed.The architecture of the player consisted of stream transport infrastructure and decoder terminal.The former was responsible for transporting media,and the later for decoding and playing.A development library named JRTPLib was used for developing the transporting layer.With the support of MAI engine,decoder terminal adopted embedded technology to implement decoding and playing.For text data,it was delivered directly to upper application＇s GUI to display.The player terminal was connected to media server by Ethernet.RTP was adopted for data communication.