Qtopia構(gòu)架下智能手機(jī)多媒體IPC 服務(wù)器的設(shè)計(jì)與實(shí)現(xiàn)

本文重點(diǎn)闡述了IPC 多媒體服務(wù)器模型實(shí)現(xiàn)的原理，通過對基于進(jìn)程并發(fā)IPC 服務(wù)
器模型與基于I/O 多路復(fù)用IPC 并發(fā)事件驅(qū)動服務(wù)器模型優(yōu)劣的分析和比較，得出在Qtopia構(gòu)架下采用后者模型的理論依據(jù)。根據(jù)該模型的原理，詳細(xì)論述了媒體服務(wù)器實(shí)現(xiàn)的方法和仲裁并發(fā)應(yīng)用沖突的策略。由于該模型不適合傳輸大批量數(shù)據(jù)，因此通過共享內(nèi)存和信號燈的結(jié)合給出了基于I/O 多路復(fù)用服務(wù)器對流媒體播放的解決方案。
關(guān)鍵詞：I/O 多路復(fù)用；事件驅(qū)動服務(wù)器；共享內(nèi)存

Multimedia IPC server of Smart phone designed under Qtopia framework Ju Yuan-qun Huo Lin (School of Computer and Electronics information, GuangXi University, NanNing 530004,China) Abstract: This paper expounds the principle of implement the IPC multimedia server model, analysis and comparing with the concurrent process IPC server model and the concurrent event-driven IPC server model based on I/O multiplexing, the model under Qtopia framework is based on the latter theory. According to the principle of the model, the methods of the media server application and the arbitration of concurrent application conflicts described in details. The model is not suitable due to a large amount of data, therefore, through the combination of shared memory and the signal lamp, the solution about playing media streaming based on I/O multiplexing server is given.
Keywords: I/O multiplexing Event-driven server Shared memory