Android上的ril库

Tester_hope

于 2019-08-20 10:30:13 发布

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分类专栏： Android

本文链接：https://blog.youkuaiyun.com/Hh20161314/article/details/97289135

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Android的RIL分为RIL驱动和RIL代理两部分，处理无线电命令和事件。RIL驱动处理无线电指令，RIL代理负责多个客户端对单一RIL驱动的仲裁。模块注册时提供两个回调函数，分别用于未请求通知和函数调用响应。例如，来电时，RIL通过未请求通知回调通知每个模块。当模块获取信号强度时，RIL通过函数响应回调传递信息，使用相同的响应标识符确保正确匹配。同步调用RIL函数时，模块需阻塞直到收到函数响应。

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ril:(radio interface layer)

ril库的结构如下：

在这里插入图片描述

The RIL is divided into two separate components, a RIL Driver and a RIL Proxy. The RIL Driver processes radio commands and events. The RIL Proxy performs arbitration between multiple clients for access to the single RIL driver.

ril driver
ril proxy

When a module first registers with the RIL, it passes in two callback functions. One is used for unsolicited notifications, and the other is used for responses to function calls. For example, when the phone receives a new incoming call, the RIL uses the unsolicited notification callback to notify each module about the incoming call.

When a module calls the RIL to get the signal strength, the function call immediately returns a response identifier. The RI