Android平台HDMI-CEC HAL的设计与实现  

Design and Implementation of HDMI-CEC HAL on Android Platform

作　　者：纪大峣 JI Dayao(Department of Research and Development,Rockchip Electronics Co.,Ltd,Fuzhou,China,350003)

机构地区：[1]瑞芯微电子股份有限公司研发部,福州350003

出　　处：《福建电脑》2025年第3期59-66,共8页Journal of Fujian Computer

摘　　要：HDMI-CECHAL是Android系统中HDMI-CEC控制服务的核心。如何确保HDMI-CECHAL的可移植性是HDMI-CECHAL设计与实现的关键问题。为此,本文提出一种HDMI-CECHAL的设计与实现。它通过将芯片厂家针对具体芯片的CEC实现剥离到独立的厂家实现库,从而将具体芯片的CEC实现与CECHAL中的AIDL服务解耦合,提高了HDMI-CEC HAL的可移植性。实验结果表明,采用该方案能够降低Android平台HDMI-CEC HAL中AIDL服务的复杂度并提高了芯片厂家适配新版本Android平台的移植效率,该设计已经在多款芯片的量产Android固件平台中得到了广泛应用。HDMI-CEC HAL is the core of the HDMI-CEC control service in the Android system,and how to ensure the portability of HDMI-CEC HAL is the key issue in the design and implementation of HDMI-CEC HAL.Therefore,this paper proposes a design and implementation of HDMI-CEC HAL,which decouples the CEC implementation of a specific chipset from the AIDL service in the CEC HAL by separating the chipset-specific CEC implementation into independent vendor implementation libraries.Experimental results show that the proposed design can reduce the complexity of AIDL service in HDMI-CEC HAL of Android platform and improve the porting efficiency of chipset vendors to develop new versions of the Android platform,and the design has been widely used in the mass production Android firmware platform of multiple chipsets.

关 键 词：消费电子控制 硬件抽象层 厂家实现库 Android平台移植 

分 类 号：TP303[自动化与计算机技术—计算机系统结构]