一、相关资料准备

1. android.so 路径列表

libbinder.so 路径如下：frameworks/native/libs/binder

2. lib_ndk 参考路径：frameworks/native/libs/binder/ndk/Android.bp

cc_library {
    name: "libbinder_ndk",
    vendor_available: true,

    export_include_dirs: [
        "include_ndk",
        "include_apex",
    ],

    cflags: [
        "-Wall",
        "-Wextra",
        "-Werror",
    ],

    srcs: [
        "ibinder.cpp",
        "ibinder_jni.cpp",
        "parcel.cpp",
        "process.cpp",
        "status.cpp",
        "service_manager.cpp",
    ],

    shared_libs: [
        "libandroid_runtime_lazy",
        "libbase",
        "libbinder",
        "libutils",
    ],

    header_libs: [
        "jni_headers",
    ],
    export_header_lib_headers: [
        "jni_headers",
    ],

    version_script: "libbinder_ndk.map.txt",
    stubs: {
        symbol_file: "libbinder_ndk.map.txt",
        versions: ["29"],
    },
}

从这里可以看出libbinder_ndk.so --依赖于---> libbinder.so 。

3. lib_ndk 对应的samples中的 makefile: iface.h

cc_library_static {
    name: "test_libbinder_ndk_library",
    defaults: ["test_libbinder_ndk_defaults"],
    export_include_dirs: ["include"],
    shared_libs: ["libbinder_ndk"],
    export_shared_lib_headers: ["libbinder_ndk"],
    srcs: ["iface.cpp"],
}

4. 参考 iface.cpp

5. 然后想办法传递parcel对象

相关链接信息

1.Android Binder 底层实现原理 2.Android Developer 官网 3.HAL: 将HIDL 接口改造为Stable AIDL 4.vnd binder和binder共存问题 5.Android native进程间通信实例-binder篇 6.binder的两种C语言实现方式

方式二 通过binder去获取 值IPC State

1. libhwbinder系统binder库 real实现
2. libbinder

方式三 通过binder service_manager去获取

/frameworks/native/cmds/servicemanager/bctest.c servicemanager

相关头文件

../../rk3568_android12_SDK/frameworks/native/include/binder/IServiceManager.h ../../rk3568_android12_SDK/frameworks/native/libs/binder/include/binder/IServiceManager.h ../../rk3568_android12_SDK/frameworks/native/include/binder/IInterface.h ../../rk3568_android12_SDK/frameworks/native/libs/binder/include/binder/IInterface.h ../../rk3568_android12_SDK/system/core/libutils/include/utils/VectorImpl.h ../../rk3568_android12_SDK/system/logging/liblog/include/log/log_id.h ../../rk3568_android12_SDK/system/logging/liblog/include/log/log.h /system/core/libsystem/include/system/graphics.h

out/target/product/rk3568_s/system/lib/libbinder.so out/target/product/rk3568_s/system/lib/libutils.so out/target/product/rk3568_s/system/lib/libcutils.so out/target/product/rk3568_s/system/lib/liblog.so

scp beancurd@121.37.117.214:/home/beancurd/rk3568_android_sdk/rk3568_android12_SDK/out/target/product/rk3568_s/system/lib/liblog.so -P 65068 .

../../rk3568_android12_SDK/prebuilts/clang/host/linux-x86/clang-r416183b1/bin/clang++ -o vibrator_main.o -I include/ vibrator_main.cpp -std=c++17 -lc++_shared

输入结果： Sharknade Binder info: 0xb400007809678490

震动驱动对应AIDL生成目录 /out/soong/.intermediates/hardware/interfaces/vibrator/aidl/android.hardware.vibrator-V2-cpp-source/gen/include/android/hardware/vibrator/