基于Android的視頻采集系統(tǒng)的設(shè)計與實現(xiàn).pdf

1、近年來，隨著信息技術(shù)的發(fā)展，物聯(lián)網(wǎng)成為了眾多領(lǐng)域中應(yīng)用的熱點。本文從物聯(lián)網(wǎng)應(yīng)用的需求出發(fā)，設(shè)計并實現(xiàn)了一套以基于Android操作系統(tǒng)的移動終端設(shè)備為客戶端、以基于Linux的PC機作為服務(wù)器的視頻采集處理平臺。
　　本文實現(xiàn)了一套使用Java層程序完成控制功能，通過JNI（Java Native Interface）技術(shù)調(diào)用FFmpeg編解碼庫進行編碼解碼操作的音視頻采集框架，并在底層設(shè)計了一個插件式的多線程任務(wù)系統(tǒng)，使客戶端系

2、統(tǒng)具備了高度的靈活性。同時客戶端能夠通過Wi-Fi、3G電話網(wǎng)絡(luò)等無線通信技術(shù)，實時的將采集的音視頻數(shù)據(jù)傳輸?shù)竭h程服務(wù)器上進行存儲或后端處理。服務(wù)器端基于ACE（Adaptive Communication Environment）中的Reactor框架設(shè)計并實現(xiàn)，具有良好的性能和穩(wěn)定性，能夠快速擴展數(shù)據(jù)處理模塊，實現(xiàn)了數(shù)據(jù)接收與具體業(yè)務(wù)的分離。文章基于實際的項目需求，對整個系統(tǒng)的結(jié)構(gòu)進行了分析，給出了各個模塊的結(jié)構(gòu)設(shè)計和軟件流程以及重

3、要模塊的詳細實現(xiàn)。
　　最后對系統(tǒng)進行了功能測試和非功能測試，并對測試結(jié)果進行了分析和總結(jié)。結(jié)果表明系統(tǒng)的功能達到了設(shè)計要求，但在性能方面仍需改進。
　　With the development of information technology, the application of Internet of Things has become a hot spot in many fields. To meet the r

4、equirements for applications of the network, a video capture system using devices based on android operating system as clients and a PC on which Linux system is installed as server is designed and implemented in this the

5、sis.
　　The thesis implements a system combined the advantages of Java and C++ language, as the design that the controller is designed on Java layer and the data processer is on C++ layer. A multi-thread based plugin s

6、ystem is implemented, providing extra flexibility. Real-time media data is transferred from clients to remote server through wireless network such as Wi-Fi or cellphone network and processed or stored right after its arr

7、iving at the server. The framework of the server is the reactor model of Adaptive Communication Environment library which is efficient and stable. The architecture and functions of system according the requirements of th

8、e project are analyzed. This thesis emphasizes on the structure and process of sub-modules.
　　The result of system function and non-function testing is analyzed and summarized. It shows that the system reaches the des