摘要
基于WinCE6.0智能手机平台设计了一套视频监控终端软件,分析了视频网络传输的途径,兼容GPRS和WIFI无线网络链路,采用RTP实现了视频传输的实时控制,并以多线程技术将视频RTP包的接收、排序组帧和视频解码分解为3个子线程任务模块;最后讨论了解码显示性能的改进,使用与Windows GDI兼容的DirectDraw技术实现视频双缓冲显示;实验表明,使用200MHz、ARM内核处理器的手机进行测试,在GPRS网络环境下视频帧率约5FPS;WIFI网络环境下实时帧率可达20FPS以上,性能稳定可靠。
Based on WinCE6.0 intelligent mobile platform, this paper design a set of video surveillance terminal software, compatible with GPRS and WIFI wireless link, real--time control was realized using RTP video transmission, and by means of multithreading technolo- gy, one RTP video sequence was decomposed into 3 subtask modules. Finally, the performance improvement of decoding display was dis- cussed. Adopting Windows GDI compatible DirectDraw technique has realized double buffering display. Proved by the experiment, the pro- cessor in the mobile （200NIHZ＇s ARM kernel）, transfer video by frame rate about 5FPS through GPRS networks;WIFI network real--time frame rate can reach 20FPS above. It＇ s stable and reliable in performance respect.
出处
《计算机测量与控制》
CSCD
北大核心
2011年第9期2292-2295,共4页
Computer Measurement &Control
基金
陕西科技大学自然科学基金项目(ZX09-34)资助
