ANDROID Porting系列十、Audio

•建立一个音频库

•接口

AudioHardwareInterface充当专有音频driver和Android AudioFlinger服务之间的连接体，Audio server的核心即处理来自应用程序的所有音频相关要求。

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实线表示Android的块元素和虚线代表partner-specific组成部分。

建设一个音频库

为了实现一个音频驱动程序，创建一个共享库，实现了在AudioHardwareInterface.h定义的接口。您必须命名您的共享librarylibaudio.so，以便它会从/system/lib中在运行时加载。放置libaudio来源和Android.mk 在/vendor/acme/chipset_or_board/libaudio/。

下面的Android.mk文件，确保与libaudio编译和链接到相应的库：

LOCAL_PATH := $(call my-dir)

include $(CLEAR_VARS)

LOCAL_MODULE := libaudio

LOCAL_SHARED_LIBRARIES := /

 libcutils /

 libutils /

 libmedia /

 libhardware

LOCAL_SRC_FILES += MyAudioHardware.cpp

LOCAL_CFLAGS +=

LOCAL_C_INCLUDES +=

LOCAL_STATIC_LIBRARIES += libaudiointerface

include $(BUILD_SHARED_LIBRARY)

Interface:AudioHardwareInterface.h