car: build audio control hal

aosp_rpi5_car.mk

@@ -15,6 +15,13 @@ PRODUCT_CHARACTERISTICS := automotive,nosdcard
 $(call inherit-product, $(SRC_TARGET_DIR)/product/full_base.mk)
 $(call inherit-product, packages/services/Car/car_product/build/car.mk)
 
+# Audio
+PRODUCT_PACKAGES += \
+    android.hardware.automotive.audiocontrol-service.example
+
+PRODUCT_COPY_FILES += \
+    $(DEVICE_CAR_PATH)/car_audio_configuration.xml:$(TARGET_COPY_OUT_VENDOR)/etc/car_audio_configuration.xml
+
 # Bluetooth
 PRODUCT_VENDOR_PROPERTIES += \
     bluetooth.device.class_of_device=38,4,8 \

car/car_audio_configuration.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+
+<!--
+  Defines the audio configuration in a car, including
+    - Audio zones
+    - Zone configurations (in each audio zone)
+    - Volume groups (in each zone configuration)
+    - Context to audio bus mappings (in each volume group)
+  in the car environment.
+-->
+<carAudioConfiguration version="3">
+    <zones>
+        <zone name="Primary zone" isPrimary="true" occupantZoneId="0">
+            <zoneConfigs>
+                <zoneConfig name="Config 0" isDefault="true">
+                    <volumeGroups>
+                        <group>
+                            <device address="Speaker">
+                                <context context="music"/>
+                                <context context="navigation"/>
+                                <context context="voice_command"/>
+                                <context context="call_ring"/>
+                                <context context="call"/>
+                                <context context="alarm"/>
+                                <context context="notification"/>
+                                <context context="system_sound"/>
+                                <context context="emergency"/>
+                                <context context="safety"/>
+                                <context context="vehicle_status"/>
+                                <context context="announcement"/>
+                            </device>
+                        </group>
+                    </volumeGroups>
+                </zoneConfig>
+            </zoneConfigs>
+        </zone>
+    </zones>
+</carAudioConfiguration>