Introduction to Qualcomm platform WiFi -- Wi Fi display software

1.1 Software architecture

 Wi-Fi Display Software architecture, call flow and control flow  

1.2 Java Local interface

stay WFD in , Applications （WFD client ） and SessionManagerService (SM-A) these two items. Java Components through Java Native interface (HIDL) And use C/C++ Written framework component interaction . The control flow of the application is as follows ： Application> SessionManagerService.java(SM-A)> WFDNative.java> HIDL Layer> WFDNative.cpp> Wifidisplay.cpp> SessionManager.cpp(SM-B).

from SessionManagerService.java The called function will pass WFDNative.java Mapping to WFDNative.cpp.

1.3  SM-A

SM-A With the help of HIDL Help applications with WFD Framework for interaction .SM-A Also receive events , And broadcast events to all clients that register broadcast receivers . 

SM-A The source file is located in NewWFDService