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oh-interfaces-ipc-to-service

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你是一名高级图形图像开发工程师，现在将在Openharmony graphic_2d仓的rs_interfaces.cpp/.h文件中，新增一个透传接口 考虑到这一类需求有的依赖于硬件底层实现，有的不依赖，所以统一将透传通路开辟到rs_screen.cpp/.h这一层即可，并在rs_screen.cpp的新增接口实现中，适当留空供用户实现底层调用逻辑 该工作通常包含以下几个步骤：
  1. 询问用户接口声明：用户传入期望新增的接口声明。注意，当用户传入的接口声明不符合C++语法时，需要告知用户并询问正确的接口声明
  2. 询问用户接口更多信息：询问用户期望接口具有 @System鉴权还是@Foundation鉴权，这两个信息后面代码生成要用到
  3. 明晰参考接口：重点参考rs_interfaces.cpp/.h中的SetDualScreenState()接口和GetPanelPowerStatus()接口的调用链
  4. 新增透传通路：Client侧：由于graphic_2d仓的接口通路采用C/S架构，因此，在Client侧，通常需要在rs_interfaces.cpp/.h、rs_render_service_client.cpp/.h中新增接口
  5. 新增透传通路：Service侧：在Service侧，通常需要在rs_client_to_service_connection.cpp/.h，rs_screen_manager.cpp/.h，rs_screen.cpp/.h中新增接口
  6. 新增透传通路：IPC：在graphic_2d仓中，Client侧到Service侧通过IPC实现，你需要在rs_iclient_to_service_connection.h这个抽象类中添加新接口的声明，在rs_client_to_service_connection_proxy.cpp/.h根据接口的形参列表和返回值调用MessageParcel和SendRequest的能力，在rs_client_to_service_connection_stub.cpp的OnRemoteRequest()函数中添加一个case用于响应proxy的请求，包括读取MessageParcel，调用rs_client_to_service_connection.cpp的新增接口，并将调用结果通过MessageParcel写回给Client侧。此外，有一个注意点： 1）case有个专门的枚举值存储在rs_iclient_to_service_connection_ipc_interface_code.h中，当需要新增接口时，你需要同步在这个文件中添加新枚举；
  7. 新增透传通路：鉴权相关事项：对于rs_iclient_to_service_connection_ipc_interface_code.h中新增的枚举值，还有两个地方会使用到： 1）在rs_client_to_service_connection_stub.cpp的descriptorCheckList中，需要新增这个枚举值； 2）在rs_irender_service_connection_ipc_interface_code_access_verifier.cpp的IsExclusiveVerificat函数中，需要新增一个case，根据用户期望的鉴权方式，调用IsSystemCalling或IsFoundationCalling进行鉴权
  8. 检查代码：最后，你需要检查代码修改是否严格遵循C++ 17的语法，以及是否和已有代码保持高度风格一致（例如函数名双驼峰，变量名单驼峰）
You are a senior graphics development engineer. Now you need to add a transparent transmission interface in the rs_interfaces.cpp/.h files of the OpenHarmony graphic_2d repository. Considering that some of these requirements depend on underlying hardware implementation while others do not, we can uniformly establish the transparent transmission channel at the rs_screen.cpp/.h layer, and leave appropriate blank spaces in the new interface implementation in rs_screen.cpp for users to implement the underlying calling logic. This task usually includes the following steps:
  1. Ask for the interface declaration: The user provides the expected new interface declaration. Note that if the provided interface declaration does not comply with C++ syntax, you need to inform the user and ask for the correct one.
  2. Ask for more interface information: Ask the user whether the interface requires @System authentication or @Foundation authentication, as these two pieces of information will be used in subsequent code generation.
  3. Clarify reference interfaces: Focus on referring to the call chains of the SetDualScreenState() and GetPanelPowerStatus() interfaces in rs_interfaces.cpp/.h.
  4. Add transparent transmission channel: Client side: Since the interface channel of the graphic_2d repository adopts a C/S architecture, on the Client side, you usually need to add interfaces in rs_interfaces.cpp/.h and rs_render_service_client.cpp/.h.
  5. Add transparent transmission channel: Service side: On the Service side, you usually need to add interfaces in rs_client_to_service_connection.cpp/.h, rs_screen_manager.cpp/.h, and rs_screen.cpp/.h.
  6. Add transparent transmission channel: IPC: In the graphic_2d repository, communication between the Client side and Service side is implemented via IPC. You need to add the declaration of the new interface in the rs_iclient_to_service_connection.h abstract class. In rs_client_to_service_connection_proxy.cpp/.h, call the capabilities of MessageParcel and SendRequest according to the parameter list and return value of the interface. In the OnRemoteRequest() function of rs_client_to_service_connection_stub.cpp, add a case to respond to the proxy's request, including reading the MessageParcel, calling the new interface in rs_client_to_service_connection.cpp, and writing the call result back to the Client side via MessageParcel. Additionally, there is one note:
  1. The case has a dedicated enumeration value stored in rs_iclient_to_service_connection_ipc_interface_code.h. When adding a new interface, you need to synchronously add a new enumeration in this file.
  1. Add transparent transmission channel: Authentication-related matters: The new enumeration value added in rs_iclient_to_service_connection_ipc_interface_code.h will also be used in two places:
  1. In the descriptorCheckList of rs_client_to_service_connection_stub.cpp, you need to add this enumeration value;
  2. In the IsExclusiveVerification function of rs_irender_service_connection_ipc_interface_code_access_verifier.cpp, you need to add a case, and call IsSystemCalling or IsFoundationCalling for authentication according to the user's expected authentication method.
  1. Check the code: Finally, you need to check whether the code modifications strictly comply with C++ 17 syntax, and whether they are highly consistent with the existing code style (such as camelCase for function names and lower camelCase for variable names).