Add copy of LegacyBluetoothRouteController (cef25ef7) · Commits · e / os / android_frameworks_base

services/core/java/com/android/server/media/AudioPoliciesBluetoothRouteController.java

0 → 100644

+579 −0

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		/*
		* Copyright 2020 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.
		*/

		package com.android.server.media;

		import static android.bluetooth.BluetoothAdapter.ACTIVE_DEVICE_AUDIO;
		import static android.bluetooth.BluetoothAdapter.STATE_CONNECTED;
		import static android.bluetooth.BluetoothAdapter.STATE_DISCONNECTED;

		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.bluetooth.BluetoothA2dp;
		import android.bluetooth.BluetoothAdapter;
		import android.bluetooth.BluetoothDevice;
		import android.bluetooth.BluetoothHearingAid;
		import android.bluetooth.BluetoothLeAudio;
		import android.bluetooth.BluetoothProfile;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.media.AudioManager;
		import android.media.AudioSystem;
		import android.media.MediaRoute2Info;
		import android.os.UserHandle;
		import android.text.TextUtils;
		import android.util.Log;
		import android.util.Slog;
		import android.util.SparseBooleanArray;
		import android.util.SparseIntArray;

		import com.android.internal.R;

		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.Iterator;
		import java.util.List;
		import java.util.Map;
		import java.util.Set;

		/**
		* Controls bluetooth routes and provides selected route override.
		*
		* <p>The controller offers similar functionality to {@link LegacyBluetoothRouteController} but does
		* not support routes selection logic. Instead, relies on external clients to make a decision
		* about currently selected route.
		*
		* <p>Selected route override should be used by {@link AudioManager} which is aware of Audio
		* Policies.
		*/
		class AudioPoliciesBluetoothRouteController implements BluetoothRouteController {
		private static final String TAG = "APBtRouteController";
		private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);

		private static final String HEARING_AID_ROUTE_ID_PREFIX = "HEARING_AID_";
		private static final String LE_AUDIO_ROUTE_ID_PREFIX = "LE_AUDIO_";

		// Maps hardware address to BluetoothRouteInfo
		private final Map<String, BluetoothRouteInfo> mBluetoothRoutes = new HashMap<>();
		private final List<BluetoothRouteInfo> mActiveRoutes = new ArrayList<>();

		// Route type -> volume map
		private final SparseIntArray mVolumeMap = new SparseIntArray();

		private final Context mContext;
		private final BluetoothAdapter mBluetoothAdapter;
		private final BluetoothRoutesUpdatedListener mListener;
		private final AudioManager mAudioManager;
		private final BluetoothProfileListener mProfileListener = new BluetoothProfileListener();

		private final AdapterStateChangedReceiver mAdapterStateChangedReceiver =
		new AdapterStateChangedReceiver();
		private final DeviceStateChangedReceiver mDeviceStateChangedReceiver =
		new DeviceStateChangedReceiver();

		private BluetoothA2dp mA2dpProfile;
		private BluetoothHearingAid mHearingAidProfile;
		private BluetoothLeAudio mLeAudioProfile;

		AudioPoliciesBluetoothRouteController(Context context, BluetoothAdapter btAdapter,
		BluetoothRoutesUpdatedListener listener) {
		mContext = context;
		mBluetoothAdapter = btAdapter;
		mListener = listener;
		mAudioManager = (AudioManager) mContext.getSystemService(Context.AUDIO_SERVICE);
		buildBluetoothRoutes();
		}

		/**
		* Registers listener to bluetooth status changes as the provided user.
		*
		* The registered receiver listens to {@link BluetoothA2dp#ACTION_ACTIVE_DEVICE_CHANGED} and
		* {@link BluetoothA2dp#ACTION_CONNECTION_STATE_CHANGED } events for {@link BluetoothProfile#A2DP},
		* {@link BluetoothProfile#HEARING_AID}, and {@link BluetoothProfile#LE_AUDIO} bluetooth profiles.
		*
		* @param user {@code UserHandle} as which receiver is registered
		*/
		@Override
		public void start(UserHandle user) {
		mBluetoothAdapter.getProfileProxy(mContext, mProfileListener, BluetoothProfile.A2DP);
		mBluetoothAdapter.getProfileProxy(mContext, mProfileListener, BluetoothProfile.HEARING_AID);
		mBluetoothAdapter.getProfileProxy(mContext, mProfileListener, BluetoothProfile.LE_AUDIO);

		IntentFilter adapterStateChangedIntentFilter = new IntentFilter();

		adapterStateChangedIntentFilter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
		mContext.registerReceiverAsUser(mAdapterStateChangedReceiver, user,
		adapterStateChangedIntentFilter, null, null);

		IntentFilter deviceStateChangedIntentFilter = new IntentFilter();

		deviceStateChangedIntentFilter.addAction(BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED);
		deviceStateChangedIntentFilter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED);
		deviceStateChangedIntentFilter.addAction(BluetoothHearingAid.ACTION_ACTIVE_DEVICE_CHANGED);
		deviceStateChangedIntentFilter.addAction(
		BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED);
		deviceStateChangedIntentFilter.addAction(
		BluetoothLeAudio.ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED);
		deviceStateChangedIntentFilter.addAction(
		BluetoothLeAudio.ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED);

		mContext.registerReceiverAsUser(mDeviceStateChangedReceiver, user,
		deviceStateChangedIntentFilter, null, null);
		}

		@Override
		public void stop() {
		mContext.unregisterReceiver(mAdapterStateChangedReceiver);
		mContext.unregisterReceiver(mDeviceStateChangedReceiver);
		}

		/**
		* Transfers to a given bluetooth route.
		* The dedicated BT device with the route would be activated.
		*
		* @param routeId the id of the Bluetooth device. {@code null} denotes to clear the use of
		* BT routes.
		*/
		@Override
		public void transferTo(@Nullable String routeId) {
		if (routeId == null) {
		clearActiveDevices();
		return;
		}

		BluetoothRouteInfo btRouteInfo = findBluetoothRouteWithRouteId(routeId);

		if (btRouteInfo == null) {
		Slog.w(TAG, "transferTo: Unknown route. ID=" + routeId);
		return;
		}

		if (mBluetoothAdapter != null) {
		mBluetoothAdapter.setActiveDevice(btRouteInfo.mBtDevice, ACTIVE_DEVICE_AUDIO);
		}
		}

		private BluetoothRouteInfo findBluetoothRouteWithRouteId(String routeId) {
		if (routeId == null) {
		return null;
		}
		for (BluetoothRouteInfo btRouteInfo : mBluetoothRoutes.values()) {
		if (TextUtils.equals(btRouteInfo.mRoute.getId(), routeId)) {
		return btRouteInfo;
		}
		}
		return null;
		}

		/**
		* Clears the active device for all known profiles.
		*/
		private void clearActiveDevices() {
		if (mBluetoothAdapter != null) {
		mBluetoothAdapter.removeActiveDevice(ACTIVE_DEVICE_AUDIO);
		}
		}

		private void buildBluetoothRoutes() {
		mBluetoothRoutes.clear();
		Set<BluetoothDevice> bondedDevices = mBluetoothAdapter.getBondedDevices();
		if (bondedDevices != null) {
		for (BluetoothDevice device : bondedDevices) {
		if (device.isConnected()) {
		BluetoothRouteInfo newBtRoute = createBluetoothRoute(device);
		if (newBtRoute.mConnectedProfiles.size() > 0) {
		mBluetoothRoutes.put(device.getAddress(), newBtRoute);
		}
		}
		}
		}
		}

		@Nullable
		@Override
		public MediaRoute2Info getSelectedRoute() {
		// For now, active routes can be multiple only when a pair of hearing aid devices is active.
		// Let the first active device represent them.
		return (mActiveRoutes.isEmpty() ? null : mActiveRoutes.get(0).mRoute);
		}

		@NonNull
		@Override
		public List<MediaRoute2Info> getTransferableRoutes() {
		List<MediaRoute2Info> routes = getAllBluetoothRoutes();
		for (BluetoothRouteInfo btRoute : mActiveRoutes) {
		routes.remove(btRoute.mRoute);
		}
		return routes;
		}

		@NonNull
		@Override
		public List<MediaRoute2Info> getAllBluetoothRoutes() {
		List<MediaRoute2Info> routes = new ArrayList<>();
		List<String> routeIds = new ArrayList<>();

		MediaRoute2Info selectedRoute = getSelectedRoute();
		if (selectedRoute != null) {
		routes.add(selectedRoute);
		routeIds.add(selectedRoute.getId());
		}

		for (BluetoothRouteInfo btRoute : mBluetoothRoutes.values()) {
		// A pair of hearing aid devices or having the same hardware address
		if (routeIds.contains(btRoute.mRoute.getId())) {
		continue;
		}
		routes.add(btRoute.mRoute);
		routeIds.add(btRoute.mRoute.getId());
		}
		return routes;
		}

		/**
		* Updates the volume for {@link AudioManager#getDevicesForStream(int) devices}.
		*
		* @return true if devices can be handled by the provider.
		*/
		@Override
		public boolean updateVolumeForDevices(int devices, int volume) {
		int routeType;
		if ((devices & (AudioSystem.DEVICE_OUT_HEARING_AID)) != 0) {
		routeType = MediaRoute2Info.TYPE_HEARING_AID;
		} else if ((devices & (AudioManager.DEVICE_OUT_BLUETOOTH_A2DP
		\| AudioManager.DEVICE_OUT_BLUETOOTH_A2DP_HEADPHONES
		\| AudioManager.DEVICE_OUT_BLUETOOTH_A2DP_SPEAKER)) != 0) {
		routeType = MediaRoute2Info.TYPE_BLUETOOTH_A2DP;
		} else if ((devices & (AudioManager.DEVICE_OUT_BLE_HEADSET)) != 0) {
		routeType = MediaRoute2Info.TYPE_BLE_HEADSET;
		} else {
		return false;
		}
		mVolumeMap.put(routeType, volume);

		boolean shouldNotify = false;
		for (BluetoothRouteInfo btRoute : mActiveRoutes) {
		if (btRoute.mRoute.getType() != routeType) {
		continue;
		}
		btRoute.mRoute = new MediaRoute2Info.Builder(btRoute.mRoute)
		.setVolume(volume)
		.build();
		shouldNotify = true;
		}
		if (shouldNotify) {
		notifyBluetoothRoutesUpdated();
		}
		return true;
		}

		private void notifyBluetoothRoutesUpdated() {
		if (mListener != null) {
		mListener.onBluetoothRoutesUpdated(getAllBluetoothRoutes());
		}
		}

		private BluetoothRouteInfo createBluetoothRoute(BluetoothDevice device) {
		BluetoothRouteInfo newBtRoute = new BluetoothRouteInfo();
		newBtRoute.mBtDevice = device;

		String routeId = device.getAddress();
		String deviceName = device.getName();
		if (TextUtils.isEmpty(deviceName)) {
		deviceName = mContext.getResources().getText(R.string.unknownName).toString();
		}
		int type = MediaRoute2Info.TYPE_BLUETOOTH_A2DP;
		newBtRoute.mConnectedProfiles = new SparseBooleanArray();
		if (mA2dpProfile != null && mA2dpProfile.getConnectedDevices().contains(device)) {
		newBtRoute.mConnectedProfiles.put(BluetoothProfile.A2DP, true);
		}
		if (mHearingAidProfile != null
		&& mHearingAidProfile.getConnectedDevices().contains(device)) {
		newBtRoute.mConnectedProfiles.put(BluetoothProfile.HEARING_AID, true);
		// Intentionally assign the same ID for a pair of devices to publish only one of them.
		routeId = HEARING_AID_ROUTE_ID_PREFIX + mHearingAidProfile.getHiSyncId(device);
		type = MediaRoute2Info.TYPE_HEARING_AID;
		}
		if (mLeAudioProfile != null
		&& mLeAudioProfile.getConnectedDevices().contains(device)) {
		newBtRoute.mConnectedProfiles.put(BluetoothProfile.LE_AUDIO, true);
		routeId = LE_AUDIO_ROUTE_ID_PREFIX + mLeAudioProfile.getGroupId(device);
		type = MediaRoute2Info.TYPE_BLE_HEADSET;
		}

		// Current volume will be set when connected.
		newBtRoute.mRoute = new MediaRoute2Info.Builder(routeId, deviceName)
		.addFeature(MediaRoute2Info.FEATURE_LIVE_AUDIO)
		.addFeature(MediaRoute2Info.FEATURE_LOCAL_PLAYBACK)
		.setConnectionState(MediaRoute2Info.CONNECTION_STATE_DISCONNECTED)
		.setDescription(mContext.getResources().getText(
		R.string.bluetooth_a2dp_audio_route_name).toString())
		.setType(type)
		.setVolumeHandling(MediaRoute2Info.PLAYBACK_VOLUME_VARIABLE)
		.setVolumeMax(mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC))
		.setAddress(device.getAddress())
		.build();
		return newBtRoute;
		}

		private void setRouteConnectionState(@NonNull BluetoothRouteInfo btRoute,
		@MediaRoute2Info.ConnectionState int state) {
		if (btRoute == null) {
		Slog.w(TAG, "setRouteConnectionState: route shouldn't be null");
		return;
		}
		if (btRoute.mRoute.getConnectionState() == state) {
		return;
		}

		MediaRoute2Info.Builder builder = new MediaRoute2Info.Builder(btRoute.mRoute)
		.setConnectionState(state);
		builder.setType(btRoute.getRouteType());

		if (state == MediaRoute2Info.CONNECTION_STATE_CONNECTED) {
		builder.setVolume(mVolumeMap.get(btRoute.getRouteType(), 0));
		}
		btRoute.mRoute = builder.build();
		}

		private void addActiveRoute(BluetoothRouteInfo btRoute) {
		if (btRoute == null) {
		Slog.w(TAG, "addActiveRoute: btRoute is null");
		return;
		}
		if (DEBUG) {
		Log.d(TAG, "Adding active route: " + btRoute.mRoute);
		}
		if (mActiveRoutes.contains(btRoute)) {
		Slog.w(TAG, "addActiveRoute: btRoute is already added.");
		return;
		}
		setRouteConnectionState(btRoute, STATE_CONNECTED);
		mActiveRoutes.add(btRoute);
		}

		private void removeActiveRoute(BluetoothRouteInfo btRoute) {
		if (DEBUG) {
		Log.d(TAG, "Removing active route: " + btRoute.mRoute);
		}
		if (mActiveRoutes.remove(btRoute)) {
		setRouteConnectionState(btRoute, STATE_DISCONNECTED);
		}
		}

		private void clearActiveRoutesWithType(int type) {
		if (DEBUG) {
		Log.d(TAG, "Clearing active routes with type. type=" + type);
		}
		Iterator<BluetoothRouteInfo> iter = mActiveRoutes.iterator();
		while (iter.hasNext()) {
		BluetoothRouteInfo btRoute = iter.next();
		if (btRoute.mRoute.getType() == type) {
		iter.remove();
		setRouteConnectionState(btRoute, STATE_DISCONNECTED);
		}
		}
		}

		private void addActiveDevices(BluetoothDevice device) {
		// Let the given device be the first active device
		BluetoothRouteInfo activeBtRoute = mBluetoothRoutes.get(device.getAddress());
		// This could happen if ACTION_ACTIVE_DEVICE_CHANGED is sent before
		// ACTION_CONNECTION_STATE_CHANGED is sent.
		if (activeBtRoute == null) {
		activeBtRoute = createBluetoothRoute(device);
		mBluetoothRoutes.put(device.getAddress(), activeBtRoute);
		}
		addActiveRoute(activeBtRoute);

		// A bluetooth route with the same route ID should be added.
		for (BluetoothRouteInfo btRoute : mBluetoothRoutes.values()) {
		if (TextUtils.equals(btRoute.mRoute.getId(), activeBtRoute.mRoute.getId())
		&& !TextUtils.equals(btRoute.mBtDevice.getAddress(),
		activeBtRoute.mBtDevice.getAddress())) {
		addActiveRoute(btRoute);
		}
		}
		}

		private static class BluetoothRouteInfo {
		private BluetoothDevice mBtDevice;
		private MediaRoute2Info mRoute;
		private SparseBooleanArray mConnectedProfiles;

		@MediaRoute2Info.Type
		int getRouteType() {
		// Let hearing aid profile have a priority.
		if (mConnectedProfiles.get(BluetoothProfile.HEARING_AID, false)) {
		return MediaRoute2Info.TYPE_HEARING_AID;
		}

		if (mConnectedProfiles.get(BluetoothProfile.LE_AUDIO, false)) {
		return MediaRoute2Info.TYPE_BLE_HEADSET;
		}

		return MediaRoute2Info.TYPE_BLUETOOTH_A2DP;
		}
		}

		// These callbacks run on the main thread.
		private final class BluetoothProfileListener implements BluetoothProfile.ServiceListener {
		@Override
		public void onServiceConnected(int profile, BluetoothProfile proxy) {
		List<BluetoothDevice> activeDevices;
		switch (profile) {
		case BluetoothProfile.A2DP:
		mA2dpProfile = (BluetoothA2dp) proxy;
		// It may contain null.
		activeDevices = mBluetoothAdapter.getActiveDevices(BluetoothProfile.A2DP);
		break;
		case BluetoothProfile.HEARING_AID:
		mHearingAidProfile = (BluetoothHearingAid) proxy;
		activeDevices = mBluetoothAdapter.getActiveDevices(
		BluetoothProfile.HEARING_AID);
		break;
		case BluetoothProfile.LE_AUDIO:
		mLeAudioProfile = (BluetoothLeAudio) proxy;
		activeDevices = mBluetoothAdapter.getActiveDevices(BluetoothProfile.LE_AUDIO);
		break;
		default:
		return;
		}
		for (BluetoothDevice device : proxy.getConnectedDevices()) {
		BluetoothRouteInfo btRoute = mBluetoothRoutes.get(device.getAddress());
		if (btRoute == null) {
		btRoute = createBluetoothRoute(device);
		mBluetoothRoutes.put(device.getAddress(), btRoute);
		}
		if (activeDevices.contains(device)) {
		addActiveRoute(btRoute);
		}
		}
		notifyBluetoothRoutesUpdated();
		}

		@Override
		public void onServiceDisconnected(int profile) {
		switch (profile) {
		case BluetoothProfile.A2DP:
		mA2dpProfile = null;
		break;
		case BluetoothProfile.HEARING_AID:
		mHearingAidProfile = null;
		break;
		case BluetoothProfile.LE_AUDIO:
		mLeAudioProfile = null;
		break;
		default:
		return;
		}
		}
		}

		private class AdapterStateChangedReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, -1);
		if (state == BluetoothAdapter.STATE_OFF
		\|\| state == BluetoothAdapter.STATE_TURNING_OFF) {
		mBluetoothRoutes.clear();
		notifyBluetoothRoutesUpdated();
		} else if (state == BluetoothAdapter.STATE_ON) {
		buildBluetoothRoutes();
		if (!mBluetoothRoutes.isEmpty()) {
		notifyBluetoothRoutesUpdated();
		}
		}
		}
		}

		private class DeviceStateChangedReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		BluetoothDevice device = intent.getParcelableExtra(
		BluetoothDevice.EXTRA_DEVICE, BluetoothDevice.class);

		switch (intent.getAction()) {
		case BluetoothA2dp.ACTION_ACTIVE_DEVICE_CHANGED:
		clearActiveRoutesWithType(MediaRoute2Info.TYPE_BLUETOOTH_A2DP);
		if (device != null) {
		addActiveRoute(mBluetoothRoutes.get(device.getAddress()));
		}
		notifyBluetoothRoutesUpdated();
		break;
		case BluetoothHearingAid.ACTION_ACTIVE_DEVICE_CHANGED:
		clearActiveRoutesWithType(MediaRoute2Info.TYPE_HEARING_AID);
		if (device != null) {
		if (DEBUG) {
		Log.d(TAG, "Setting active hearing aid devices. device=" + device);
		}

		addActiveDevices(device);
		}
		notifyBluetoothRoutesUpdated();
		break;
		case BluetoothLeAudio.ACTION_LE_AUDIO_ACTIVE_DEVICE_CHANGED:
		clearActiveRoutesWithType(MediaRoute2Info.TYPE_BLE_HEADSET);
		if (device != null) {
		if (DEBUG) {
		Log.d(TAG, "Setting active le audio devices. device=" + device);
		}

		addActiveDevices(device);
		}
		notifyBluetoothRoutesUpdated();
		break;
		case BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED:
		handleConnectionStateChanged(BluetoothProfile.A2DP, intent, device);
		break;
		case BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED:
		handleConnectionStateChanged(BluetoothProfile.HEARING_AID, intent, device);
		break;
		case BluetoothLeAudio.ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED:
		handleConnectionStateChanged(BluetoothProfile.LE_AUDIO, intent, device);
		break;
		}
		}

		private void handleConnectionStateChanged(int profile, Intent intent,
		BluetoothDevice device) {
		int state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);
		BluetoothRouteInfo btRoute = mBluetoothRoutes.get(device.getAddress());
		if (state == BluetoothProfile.STATE_CONNECTED) {
		if (btRoute == null) {
		btRoute = createBluetoothRoute(device);
		if (btRoute.mConnectedProfiles.size() > 0) {
		mBluetoothRoutes.put(device.getAddress(), btRoute);
		notifyBluetoothRoutesUpdated();
		}
		} else {
		btRoute.mConnectedProfiles.put(profile, true);
		}
		} else if (state == BluetoothProfile.STATE_DISCONNECTING
		\|\| state == BluetoothProfile.STATE_DISCONNECTED) {
		if (btRoute != null) {
		btRoute.mConnectedProfiles.delete(profile);
		if (btRoute.mConnectedProfiles.size() == 0) {
		removeActiveRoute(mBluetoothRoutes.remove(device.getAddress()));
		notifyBluetoothRoutesUpdated();
		}
		}
		}
		}
		}
		}

services/core/java/com/android/server/media/LegacyBluetoothRouteController.java

+1 −1

Original line number	Diff line number	Diff line
		@@ -52,7 +52,7 @@ import java.util.Map;
		import java.util.Set;

		class LegacyBluetoothRouteController implements BluetoothRouteController {
		private static final String TAG = "BTRouteProvider";
		private static final String TAG = "LBtRouteProvider";
		private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG);

		private static final String HEARING_AID_ROUTE_ID_PREFIX = "HEARING_AID_";