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Commit 2144b4f8 authored by Changyeon Jo's avatar Changyeon Jo
Browse files

Enable rust backend 

Enable rust EVS HAL backend and add its empty implementation that
returns binder::StatusCode::UNKNOWN_ERROR for all API except deprecated
ultrasonic API.

Fix: 319475162
Test: Build android.hardware.automotive.evs-aidl-rust-service and
      manually run it on cf_x86_64_auto lunch target.
Flag: EXEMPT HAL interface change
Change-Id: Ib9a1ee5fb224c114f57b6b6dca21d7b1cee005f0
parent 6c4f7afc

automotive/evs/aidl/Android.bp

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Original line number Diff line number Diff line
@@ -44,6 +44,9 @@ aidl_interface { 
        ndk: {

            min_sdk_version: "29",

        },

        rust: {

            enabled: true,

        },

    },

    versions_with_info: [

        {

automotive/evs/aidl/rust_impl/Android.bp

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/*

 * Copyright (C) 2024 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */



rust_binary {

    name: "android.hardware.automotive.evs-aidl-rust-service",

    relative_install_path: "hw",

    vendor: true,

    srcs: ["src/*.rs"],

    crate_root: "src/main.rs",

    vintf_fragments: ["manifest_evs-rust-service.xml"],

    init_rc: ["evs-rust-service.rc"],

    rustlibs: [

        "android.hardware.automotive.evs-V2-rust",

        "libbinder_rs",

        "liblog_rust",

    ],

}

automotive/evs/aidl/rust_impl/README.md

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# Rust Skeleton EVS HAL implementation.



WARNING: This is not a reference EVS HAL implementation and therefore does not

provide any actual functionality.



This folder contains a skeleton EVS HAL implementation in Rust to demonstrate

how vendors could implement their EVS HAL in Rust. To compile and run this

implementation, please include below package to the device build script:



* `android.hardware.automotive.evs-aidl-rust-service`



Please note that this service will attempt to register the service as

`IEvsEnumerator/rust/0` and therefore is also required to be declared in the

service context by adding below line to a proper `service_contexts` file:



> android.hardware.automotive.evs.IEvsEnumerator/rust/0 u:object_r:hal_evs_service:s0



This implementation intentionally returns `binder::StatusCode::UNKNOWN_ERROR`

for any API call except deprecated API for ultrasonics; the process will be

panicked on these methods instead. Hence, this implementation does not comply

with VTS tests and vendors must replace each method with actual implementation.

automotive/evs/aidl/rust_impl/evs-rust-service.rc

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service vendor.evs-hal-rust-default /vendor/bin/hw/android.hardware.automotive.evs-aidl-rust-service

    class early_hal

    priority -20

    user graphics

    group automotive_evs camera

    onrestart restart cardisplayproxyd

    onrestart restart evsmanagerd

    disabled

automotive/evs/aidl/rust_impl/manifest_evs-rust-service.xml

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<manifest version="2.0" type="device">

    <hal format="aidl">

        <name>android.hardware.automotive.evs</name>

        <version>2</version>

        <fqname>IEvsEnumerator/rust/0</fqname>

    </hal>

</manifest>