[Audio Routing] Add audio routing functionality for hearing device
* 'Ringtone', 'Call', 'Media', 'System sounds' routing capability for hearing device Bug: 269122580 Test: make RunSettingsRoboTests ROBOTEST_FILTER=HearingDeviceAudioRoutingBasePreferenceControllerTest Change-Id: Id43b2323740bfa40c36f74dec644c00695f414c3
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jasonwshsu
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/*
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.bluetooth;
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import android.content.ContentResolver;
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import android.content.Context;
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import android.media.AudioAttributes;
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import android.media.AudioDeviceAttributes;
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import android.media.AudioDeviceInfo;
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import android.media.AudioManager;
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import android.media.audiopolicy.AudioProductStrategy;
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import android.util.Log;
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import androidx.annotation.IntDef;
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import androidx.annotation.VisibleForTesting;
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import androidx.preference.ListPreference;
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import androidx.preference.Preference;
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import com.android.settings.core.BasePreferenceController;
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import com.android.settingslib.bluetooth.CachedBluetoothDevice;
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import com.google.common.primitives.Ints;
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import java.lang.annotation.Retention;
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import java.lang.annotation.RetentionPolicy;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.stream.Collectors;
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/**
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* Abstract class for providing audio routing {@link ListPreference} common control for hearing
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* device specifically.
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*/
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public abstract class HearingDeviceAudioRoutingBasePreferenceController extends
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BasePreferenceController implements Preference.OnPreferenceChangeListener {
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private static final String TAG = "HARoutingBasePreferenceController";
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private static final AudioDeviceAttributes DEVICE_SPEAKER_OUT = new AudioDeviceAttributes(
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AudioDeviceAttributes.ROLE_OUTPUT, AudioDeviceInfo.TYPE_BUILTIN_SPEAKER, "");
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private final AudioManager mAudioManager;
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public HearingDeviceAudioRoutingBasePreferenceController(Context context,
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String preferenceKey) {
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super(context, preferenceKey);
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mAudioManager = mContext.getSystemService(AudioManager.class);
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}
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@Override
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public int getAvailabilityStatus() {
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return AVAILABLE;
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}
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@Override
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public void updateState(Preference preference) {
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super.updateState(preference);
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final ListPreference listPreference = (ListPreference) preference;
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final int routingValue = restoreRoutingValue(mContext);
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listPreference.setValue(String.valueOf(routingValue));
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}
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@Override
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public boolean onPreferenceChange(Preference preference, Object newValue) {
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final ListPreference listPreference = (ListPreference) preference;
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final Integer routingValue = Ints.tryParse((String) newValue);
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final AudioDeviceAttributes hearingDeviceAttribute = new AudioDeviceAttributes(
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AudioDeviceAttributes.ROLE_OUTPUT,
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AudioDeviceInfo.TYPE_HEARING_AID,
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getHearingDevice().getAddress());
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final List<AudioProductStrategy> supportedStrategies = getSupportedStrategies(
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getSupportedAttributeList());
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boolean status = false;
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if (routingValue != null) {
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switch (routingValue) {
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case RoutingValue.AUTO:
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status = removePreferredDeviceForStrategies(supportedStrategies);
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break;
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case RoutingValue.HEARING_DEVICE:
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removePreferredDeviceForStrategies(supportedStrategies);
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status = setPreferredDeviceForStrategies(supportedStrategies,
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hearingDeviceAttribute);
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break;
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case RoutingValue.DEVICE_SPEAKER:
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removePreferredDeviceForStrategies(supportedStrategies);
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status = setPreferredDeviceForStrategies(supportedStrategies,
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DEVICE_SPEAKER_OUT);
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break;
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default:
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throw new IllegalArgumentException("Unexpected routingValue: " + routingValue);
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}
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}
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if (!status) {
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Log.w(TAG, "routingMode: " + listPreference.getKey() + "routingValue: " + routingValue
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+ " fail to configure AudioProductStrategy");
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}
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saveRoutingValue(mContext, routingValue);
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updateState(listPreference);
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return true;
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}
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/**
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* Gets a list of usage value defined in {@link AudioAttributes} that is used to configure
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* audio routing via {@link AudioProductStrategy}.
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*/
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protected abstract int[] getSupportedAttributeList();
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/**
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* Gets the {@link CachedBluetoothDevice} hearing device that is used to configure audio
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* routing.
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*/
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protected abstract CachedBluetoothDevice getHearingDevice();
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/**
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* Saves the {@link RoutingValue}.
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*
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* @param context the valid context used to get the {@link ContentResolver}
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* @param routingValue the value defined in {@link RoutingValue}
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*/
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protected abstract void saveRoutingValue(Context context, int routingValue);
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/**
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* Restores the {@link RoutingValue} and used to reflect status on ListPreference.
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*
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* @param context the valid context used to get the {@link ContentResolver}
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* @return one of {@link RoutingValue}
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*/
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protected abstract int restoreRoutingValue(Context context);
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private List<AudioProductStrategy> getSupportedStrategies(int[] attributeSdkUsageList) {
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final List<AudioAttributes> audioAttrList = new ArrayList<>(attributeSdkUsageList.length);
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for (int attributeSdkUsage : attributeSdkUsageList) {
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audioAttrList.add(new AudioAttributes.Builder().setUsage(attributeSdkUsage).build());
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}
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final List<AudioProductStrategy> allStrategies = getAudioProductStrategies();
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final List<AudioProductStrategy> supportedStrategies = new ArrayList<>();
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for (AudioProductStrategy strategy : allStrategies) {
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for (AudioAttributes audioAttr : audioAttrList) {
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if (strategy.supportsAudioAttributes(audioAttr)) {
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supportedStrategies.add(strategy);
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}
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}
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}
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return supportedStrategies.stream().distinct().collect(Collectors.toList());
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}
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@VisibleForTesting
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List<AudioProductStrategy> getAudioProductStrategies() {
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return AudioManager.getAudioProductStrategies();
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}
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@VisibleForTesting
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boolean setPreferredDeviceForStrategies(List<AudioProductStrategy> strategies,
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AudioDeviceAttributes audioDevice) {
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boolean status = true;
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for (AudioProductStrategy strategy : strategies) {
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status &= mAudioManager.setPreferredDeviceForStrategy(strategy, audioDevice);
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}
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return status;
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}
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@VisibleForTesting
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boolean removePreferredDeviceForStrategies(List<AudioProductStrategy> strategies) {
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boolean status = true;
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for (AudioProductStrategy strategy : strategies) {
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status &= mAudioManager.removePreferredDeviceForStrategy(strategy);
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}
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return status;
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}
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@Retention(RetentionPolicy.SOURCE)
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@IntDef({
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RoutingValue.AUTO,
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RoutingValue.HEARING_DEVICE,
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RoutingValue.DEVICE_SPEAKER,
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})
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@VisibleForTesting
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protected @interface RoutingValue {
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int AUTO = 0;
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int HEARING_DEVICE = 1;
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int DEVICE_SPEAKER = 2;
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}
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}
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