android service camera,android CameraService 最终也是继承 BBinder

android CameraService 最终也是继承 BBinder,所以可以实现binder功能

class CameraService :

public BinderService,

public virtual ::android::hardware::BnCameraService,

public virtual IBinder::DeathRecipient,

public camera_module_callbacks_t,

public virtual CameraProviderManager::StatusListener{

。。。

。。。

}

class BnCameraService: public BnInterface

{

public:

virtual status_t    onTransact( uint32_t code,

const Parcel& data,

Parcel* reply,

uint32_t flags = 0);

};

template

class BnInterface : public INTERFACE, public BBinder

{

public:

virtual sp      queryLocalInterface(const String16& _descriptor);

virtual const String16&     getInterfaceDescriptor() const;

protected:

virtual IBinder*            onAsBinder();

};