Hearing Aid Service Stub (27e53fc9) · Commits · e / os / android_packages_apps_Bluetooth

AndroidManifest.xml

+8 −0

Original line number	Diff line number	Diff line
		@@ -382,6 +382,14 @@
		<action android:name="android.bluetooth.IBluetoothPbapClient" />
		</intent-filter>
		</service>
		<service
		android:process="@string/process"
		android:name = ".hearingaid.HearingAidService"
		android:enabled="@bool/profile_supported_hearing_aid">
		<intent-filter>
		<action android:name="android.bluetooth.IBluetoothHearingAid" />
		</intent-filter>
		</service>
		<!-- Authenticator for PBAP account. -->
		<service
		android:process="@string/process"

res/values/config.xml

+1 −0

Original line number	Diff line number	Diff line
		@@ -31,6 +31,7 @@
		<bool name="profile_supported_pbapclient">false</bool>
		<bool name="profile_supported_mapmce">false</bool>
		<bool name="profile_supported_hid_device">true</bool>
		<bool name="profile_supported_hearing_aid">true</bool>

		<!-- If true, we will require location to be enabled on the device to
		fire Bluetooth LE scan result callbacks in addition to having one

src/com/android/bluetooth/btservice/Config.java

+4 −1

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@ import com.android.bluetooth.a2dpsink.A2dpSinkService;
		import com.android.bluetooth.avrcpcontroller.AvrcpControllerService;
		import com.android.bluetooth.gatt.GattService;
		import com.android.bluetooth.hdp.HealthService;
		import com.android.bluetooth.hearingaid.HearingAidService;
		import com.android.bluetooth.hfp.HeadsetService;
		import com.android.bluetooth.hfpclient.HeadsetClientService;
		import com.android.bluetooth.hid.HidDeviceService;
		@@ -94,7 +95,9 @@ public class Config {
		new ProfileConfig(BluetoothOppService.class, R.bool.profile_supported_opp,
		(1 << BluetoothProfile.OPP)),
		new ProfileConfig(BluetoothPbapService.class, R.bool.profile_supported_pbap,
		(1 << BluetoothProfile.PBAP))
		(1 << BluetoothProfile.PBAP)),
		new ProfileConfig(HearingAidService.class, R.bool.profile_supported_hearing_aid,
		(1 << BluetoothProfile.HEARING_AID))
		};

		private static Class[] sSupportedProfiles = new Class[0];

src/com/android/bluetooth/hearingaid/HearingAidService.java

0 → 100644

+540 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright 2018 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.bluetooth.hearingaid;

		import android.bluetooth.BluetoothAdapter;
		import android.bluetooth.BluetoothCodecStatus;
		import android.bluetooth.BluetoothDevice;
		import android.bluetooth.BluetoothHearingAid;
		import android.bluetooth.BluetoothProfile;
		import android.bluetooth.BluetoothUuid;
		import android.bluetooth.IBluetoothHearingAid;
		import android.content.BroadcastReceiver;
		import android.content.Context;
		import android.content.Intent;
		import android.content.IntentFilter;
		import android.os.HandlerThread;
		import android.os.ParcelUuid;
		import android.provider.Settings;
		import android.support.annotation.VisibleForTesting;
		import android.util.Log;

		import com.android.bluetooth.Utils;
		import com.android.bluetooth.btservice.AdapterService;
		import com.android.bluetooth.btservice.ProfileService;

		import java.util.ArrayList;
		import java.util.HashMap;
		import java.util.List;
		import java.util.Map;
		import java.util.Objects;

		/**
		* Provides Bluetooth HearingAid profile, as a service in the Bluetooth application.
		* @hide
		*/
		public class HearingAidService extends ProfileService {
		private static final boolean DBG = true;
		private static final String TAG = "HearingAidService";

		private static HearingAidService sHearingAidService;

		private BluetoothAdapter mAdapter;
		private HandlerThread mStateMachinesThread;

		private BluetoothDevice mActiveDevice;

		private final Map<BluetoothDevice, Integer> mDeviceMap = new HashMap<>();

		private BroadcastReceiver mBondStateChangedReceiver;
		private BroadcastReceiver mConnectionStateChangedReceiver;

		@Override
		protected IProfileServiceBinder initBinder() {
		return new BluetoothHearingAidBinder(this);
		}

		@Override
		protected void create() {
		if (DBG) {
		Log.d(TAG, "create()");
		}
		}

		@Override
		protected boolean start() {
		if (DBG) {
		Log.d(TAG, "start()");
		}
		if (sHearingAidService != null) {
		throw new IllegalStateException("start() called twice");
		}

		// Step 1: Get BluetoothAdapter, AdapterService, A2dpNativeInterface, AudioManager.
		// None of them can be null.
		mAdapter = Objects.requireNonNull(BluetoothAdapter.getDefaultAdapter(),
		"BluetoothAdapter cannot be null when HearingAidService starts");
		mAdapterService = Objects.requireNonNull(AdapterService.getAdapterService(),
		"AdapterService cannot be null when HearingAidService starts");
		// TODO: Add native interface

		// Step 2: Start handler thread for state machines
		// TODO: Clear state machines
		mStateMachinesThread = new HandlerThread("HearingAidService.StateMachines");
		mStateMachinesThread.start();

		// Step 3: Initialize native interface
		// TODO: Init native interface

		// Step 4: Setup broadcast receivers
		IntentFilter filter = new IntentFilter();
		filter.addAction(BluetoothDevice.ACTION_BOND_STATE_CHANGED);
		mBondStateChangedReceiver = new BondStateChangedReceiver();
		registerReceiver(mBondStateChangedReceiver, filter);
		filter = new IntentFilter();
		filter.addAction(BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED);
		mConnectionStateChangedReceiver = new ConnectionStateChangedReceiver();
		registerReceiver(mConnectionStateChangedReceiver, filter);

		// Step 5: Mark service as started
		setHearingAidService(this);

		// Step 6: Clear active device
		setActiveDevice(null);

		return true;
		}

		@Override
		protected boolean stop() {
		if (DBG) {
		Log.d(TAG, "stop()");
		}
		if (sHearingAidService == null) {
		Log.w(TAG, "stop() called before start()");
		return true;
		}

		// Step 6: Clear active device
		setActiveDevice(null);

		// Step 5: Mark service as stopped
		setHearingAidService(null);

		// Step 4: Unregister broadcast receivers
		unregisterReceiver(mBondStateChangedReceiver);
		mBondStateChangedReceiver = null;
		unregisterReceiver(mConnectionStateChangedReceiver);
		mConnectionStateChangedReceiver = null;

		// Step 3: Cleanup native interface
		// TODO: Cleanup native interface

		// Step 3: Destroy state machines and stop handler thread
		// TODO: Implement me

		if (mStateMachinesThread != null) {
		mStateMachinesThread.quitSafely();
		mStateMachinesThread = null;
		}

		// Step 1: Clear BluetoothAdapter, AdapterService, HearingAidNativeInterface
		// TODO: Set native interface to null
		mAdapterService = null;
		mAdapter = null;

		return true;
		}

		@Override
		protected void cleanup() {
		if (DBG) {
		Log.d(TAG, "cleanup()");
		}
		}

		/**
		* Get the HearingAidService instance
		* @return HearingAidService instance
		*/
		public static synchronized HearingAidService getHearingAidService() {
		if (sHearingAidService == null) {
		Log.w(TAG, "getHearingAidService(): service is NULL");
		return null;
		}

		if (!sHearingAidService.isAvailable()) {
		Log.w(TAG, "getHearingAidService(): service is not available");
		return null;
		}
		return sHearingAidService;
		}

		private static synchronized void setHearingAidService(HearingAidService instance) {
		if (DBG) {
		Log.d(TAG, "setHearingAidService(): set to: " + instance);
		}
		sHearingAidService = instance;
		}

		boolean connect(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission");
		if (DBG) {
		Log.d(TAG, "connect(): " + device);
		}

		if (getPriority(device) == BluetoothProfile.PRIORITY_OFF) {
		return false;
		}
		ParcelUuid[] featureUuids = device.getUuids();
		if (!BluetoothUuid.isUuidPresent(featureUuids, BluetoothUuid.HearingAid)) {
		Log.e(TAG, "Cannot connect to " + device + " : Remote does not have HearingAid UUID");
		return false;
		}

		// TODO: Implement me
		return false;
		}

		boolean disconnect(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission");
		if (DBG) {
		Log.d(TAG, "disconnect(): " + device);
		}

		// TODO: Implement me
		return false;
		}

		List<BluetoothDevice> getConnectedDevices() {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		// TODO: Implement me
		return new ArrayList<>();
		}

		/**
		* Check whether can connect to a peer device.
		* The check considers a number of factors during the evaluation.
		*
		* @param device the peer device to connect to
		* @return true if connection is allowed, otherwise false
		*/
		boolean okToConnect(BluetoothDevice device) {
		throw new IllegalStateException("Implement me");
		}

		List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		// TODO: Implement me
		return new ArrayList<>();
		}

		/**
		* Get the list of devices that have state machines.
		*
		* @return the list of devices that have state machines
		*/
		@VisibleForTesting
		List<BluetoothDevice> getDevices() {
		// TODO: Implement me
		return new ArrayList<>();
		}

		int getConnectionState(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		// TODO: Implement me
		return BluetoothProfile.STATE_DISCONNECTED;
		}

		/**
		* Set the active device.
		*
		* @param device the active device
		* @return true on success, otherwise false
		*/
		public synchronized boolean setActiveDevice(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission");
		// TODO: Implement me
		return false;
		}

		/**
		* Get the active device.
		*
		* @return the active device or null if no device is active
		*/
		public synchronized BluetoothDevice getActiveDevice() {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		throw new IllegalStateException("Implement me");
		}

		private synchronized boolean isActiveDevice(BluetoothDevice device) {
		throw new IllegalStateException("Implement me");
		}

		/**
		* Set the priority of the Hearing Aid profile.
		*
		* @param device the remote device
		* @param priority the priority of the profile
		* @return true on success, otherwise false
		*/
		public boolean setPriority(BluetoothDevice device, int priority) {
		enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission");
		Settings.Global.putInt(getContentResolver(),
		Settings.Global.getBluetoothHearingAidPriorityKey(device.getAddress()), priority);
		if (DBG) {
		Log.d(TAG, "Saved priority " + device + " = " + priority);
		}
		return true;
		}
		/**
		* Get the priority of the Hearing Aid profile.
		*
		* @param device the remote device
		* @return the profile priority
		*/
		public int getPriority(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission");
		int priority = Settings.Global.getInt(getContentResolver(),
		Settings.Global.getBluetoothHearingAidPriorityKey(device.getAddress()),
		BluetoothProfile.PRIORITY_UNDEFINED);
		return priority;
		}

		synchronized boolean isHearingAidPlaying(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		if (DBG) {
		Log.d(TAG, "isHearingAidPlaying(" + device + ")");
		}
		throw new IllegalStateException("Implement me");
		}

		/**
		* Gets the current codec status (configuration and capability).
		*
		* @param device the remote Bluetooth device. If null, use the currect
		* active HearingAid Bluetooth device.
		* @return the current codec status
		* @hide
		*/
		public BluetoothCodecStatus getCodecStatus(BluetoothDevice device) {
		enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission");
		if (DBG) {
		Log.d(TAG, "getCodecStatus(" + device + ")");
		}
		throw new IllegalStateException("Implement me");
		}

		private void broadcastActiveDevice(BluetoothDevice device) {
		if (DBG) {
		Log.d(TAG, "broadcastActiveDevice(" + device + ")");
		}

		Intent intent = new Intent(BluetoothHearingAid.ACTION_ACTIVE_DEVICE_CHANGED);
		intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device);
		intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT
		\| Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND);
		sendBroadcast(intent, ProfileService.BLUETOOTH_PERM);
		}

		// Remove state machine if the bonding for a device is removed
		private class BondStateChangedReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		if (!BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(intent.getAction())) {
		return;
		}
		int state = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
		BluetoothDevice.ERROR);
		BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
		if (DBG) {
		Log.d(TAG, "Bond state changed for device: " + device + " state: " + state);
		}
		if (state != BluetoothDevice.BOND_NONE) {
		return;
		}
		// TODO: Implement me
		}
		}

		/**
		* Process a change in the bonding state for a device.
		*
		* @param device the device whose bonding state has changed
		* @param bondState the new bond state for the device. Possible values are:
		* {@link BluetoothDevice#BOND_NONE},
		* {@link BluetoothDevice#BOND_BONDING},
		* {@link BluetoothDevice#BOND_BONDED}.
		*/
		@VisibleForTesting
		void bondStateChanged(BluetoothDevice device, int bondState) {
		if (DBG) {
		Log.d(TAG, "Bond state changed for device: " + device + " state: " + bondState);
		}
		// Remove state machine if the bonding for a device is removed
		if (bondState != BluetoothDevice.BOND_NONE) {
		return;
		}
		// TODO: Implement me
		}

		private synchronized void connectionStateChanged(BluetoothDevice device, int fromState,
		int toState) {
		// TODO: Implement me
		}

		private class ConnectionStateChangedReceiver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
		if (!BluetoothHearingAid.ACTION_CONNECTION_STATE_CHANGED.equals(intent.getAction())) {
		return;
		}
		BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
		int toState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);
		int fromState = intent.getIntExtra(BluetoothProfile.EXTRA_PREVIOUS_STATE, -1);
		connectionStateChanged(device, fromState, toState);
		}
		}

		// Binder object: Must be static class or memory leak may occur
		@VisibleForTesting
		static class BluetoothHearingAidBinder extends IBluetoothHearingAid.Stub
		implements IProfileServiceBinder {
		private HearingAidService mService;

		private HearingAidService getService() {
		if (!Utils.checkCaller()) {
		Log.w(TAG, "HearingAid call not allowed for non-active user");
		return null;
		}

		if (mService != null && mService.isAvailable()) {
		return mService;
		}
		return null;
		}

		BluetoothHearingAidBinder(HearingAidService svc) {
		mService = svc;
		}

		@Override
		public void cleanup() {
		mService = null;
		}

		@Override
		public boolean connect(BluetoothDevice device) {
		HearingAidService service = getService();
		if (service == null) {
		return false;
		}
		return service.connect(device);
		}

		@Override
		public boolean disconnect(BluetoothDevice device) {
		HearingAidService service = getService();
		if (service == null) {
		return false;
		}
		return service.disconnect(device);
		}

		@Override
		public List<BluetoothDevice> getConnectedDevices() {
		HearingAidService service = getService();
		if (service == null) {
		return new ArrayList<BluetoothDevice>(0);
		}
		return service.getConnectedDevices();
		}

		@Override
		public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) {
		HearingAidService service = getService();
		if (service == null) {
		return new ArrayList<BluetoothDevice>(0);
		}
		return service.getDevicesMatchingConnectionStates(states);
		}

		@Override
		public int getConnectionState(BluetoothDevice device) {
		HearingAidService service = getService();
		if (service == null) {
		return BluetoothProfile.STATE_DISCONNECTED;
		}
		return service.getConnectionState(device);
		}

		@Override
		public boolean setPriority(BluetoothDevice device, int priority) {
		HearingAidService service = getService();
		if (service == null) {
		return false;
		}
		return service.setPriority(device, priority);
		}

		@Override
		public int getPriority(BluetoothDevice device) {
		HearingAidService service = getService();
		if (service == null) {
		return BluetoothProfile.PRIORITY_UNDEFINED;
		}
		return service.getPriority(device);
		}

		@Override
		public void setVolume(int volume) {
		// TODO: Implement me
		}

		@Override
		public void adjustVolume(int direction) {
		// TODO: Implement me
		}

		@Override
		public int getVolume() {
		return 0;
		}

		@Override
		public long getHiSyncId(BluetoothDevice device) {
		return 0;
		}

		@Override
		public int getDeviceSide(BluetoothDevice device) {
		return 0;
		}

		@Override
		public int getDeviceMode(BluetoothDevice device) {
		return 0;
		}
		}

		@Override
		public void dump(StringBuilder sb) {
		super.dump(sb);
		ProfileService.println(sb, "mActiveDevice: " + mActiveDevice);
		}
		}