Does any car emulator project (arm, arm64, x86, x64_64) being tested on Android 8.1?

[GuoXin Hong]

Hi,

I downloaded Android 8.1 from AOSP

Got build failed after choosing any one of the car emulator projects listed

Does anyone knows the tricks to build car emulator project or car emulator projects are NOT tested yet

Thanks

[Christopher McClellan]

Those projects appear to have been added prior to Oreo and not maintained since.

I've not gotten the car emulator projects to build, but have been able to get the emulated vehicle HAL and the demo apps running.

Most of this is accomplished by including the `packages/services/Car/build/car.mk` file in the device's makefile.

https://android.googlesource.com/platform/packages/services/Car/+/master/car_product/build/car.mk

We did also have to add an SELinux domain for the for the vehicle service as described here.

https://source.android.com/security/selinux/device-policy#label_new_services_and_address_denials

[Sibiraj T]

Hello Christopher McClellan,

If you have worked on vehicle HAL, Kindly help me out with the below query.

AOSP: How to initialize the VehicleProperty::AUDIO_VOLUME  property (.initialValues in the DefaultConfig.h) in vehicl hal ?

Trying to add AUDIO_VOLUME property to the demo vehicle hal code present in /hardware/interfaces/automotive/vehicle/2.0/default/impl/vhal_v2_0/

File name: DefaultConfig.h
tried adding like below, but it is crashing.

        {.config =
            {
                .prop = toInt(VehicleProperty::AUDIO_VOLUME),
                .access = VehiclePropertyAccess::READ_WRITE,
                .changeMode = VehiclePropertyChangeMode::ON_CHANGE,
                .configArray = { toInt(VehicleAudioContextFlag::MUSIC_FLAG), toInt(VehicleAudioVolumeCapabilityFlag::MASTER_VOLUME_ONLY),0,0,100 },
            },
            .initialValue = {.int32Values = { toInt(VehicleAudioContextFlag::MUSIC_FLAG), 80, toInt(VehicleAudioVolumeState::STATE_OK)  } }
        },

AUDIO_VOLUME property as defined in /hardware/interfaces/automotive/vehicle/2.0/types.hal
     * @change_mode VehiclePropertyChangeMode:ON_CHANGE
     * @access VehiclePropertyAccess:READ_WRITE
     * @config_flags all audio contexts supported.
     */
    AUDIO_VOLUME = (
        0x0901
        | VehiclePropertyGroup:SYSTEM
        | VehiclePropertyType:INT32_VEC
        | VehicleArea:GLOBAL),


reference OSP code available in http://androidxref.com/8.0.0_r4/xref/

Thanks in advance.!!