| /* |
| * Copyright 2020 HIMSA II K/S - www.himsa.com. |
| * Represented by EHIMA - www.ehima.com |
| * |
| * 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.le_audio; |
| |
| import static android.bluetooth.IBluetoothLeAudio.LE_AUDIO_GROUP_ID_INVALID; |
| |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothLeAudio; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.BluetoothUuid; |
| import android.bluetooth.IBluetoothLeAudio; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.media.AudioManager; |
| import android.os.HandlerThread; |
| import android.os.ParcelUuid; |
| import android.util.Log; |
| |
| import com.android.bluetooth.Utils; |
| import com.android.bluetooth.btservice.AdapterService; |
| import com.android.bluetooth.btservice.ProfileService; |
| import com.android.bluetooth.btservice.storage.DatabaseManager; |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.ArrayUtils; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Objects; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * Provides Bluetooth LeAudio profile, as a service in the Bluetooth application. |
| * @hide |
| */ |
| public class LeAudioService extends ProfileService { |
| private static final boolean DBG = true; |
| private static final String TAG = "LeAudioService"; |
| |
| // Upper limit of all LeAudio devices: Bonded or Connected |
| private static final int MAX_LE_AUDIO_STATE_MACHINES = 10; |
| private static LeAudioService sLeAudioService; |
| |
| private AdapterService mAdapterService; |
| private DatabaseManager mDatabaseManager; |
| private HandlerThread mStateMachinesThread; |
| private BluetoothDevice mPreviousAudioDevice; |
| |
| LeAudioNativeInterface mLeAudioNativeInterface; |
| AudioManager mAudioManager; |
| |
| private final Map<BluetoothDevice, LeAudioStateMachine> mStateMachines = new HashMap<>(); |
| |
| private final Map<BluetoothDevice, Integer> mDeviceGroupIdMap = new ConcurrentHashMap<>(); |
| private final Map<Integer, Boolean> mGroupIdConnectedMap = new HashMap<>(); |
| private int mActiveDeviceGroupId = LE_AUDIO_GROUP_ID_INVALID; |
| |
| private BroadcastReceiver mBondStateChangedReceiver; |
| private BroadcastReceiver mConnectionStateChangedReceiver; |
| |
| @Override |
| protected IProfileServiceBinder initBinder() { |
| return new BluetoothLeAudioBinder(this); |
| } |
| |
| @Override |
| protected void create() { |
| Log.i(TAG, "create()"); |
| } |
| |
| @Override |
| protected boolean start() { |
| Log.i(TAG, "start()"); |
| if (sLeAudioService != null) { |
| throw new IllegalStateException("start() called twice"); |
| } |
| |
| mAdapterService = Objects.requireNonNull(AdapterService.getAdapterService(), |
| "AdapterService cannot be null when LeAudioService starts"); |
| mLeAudioNativeInterface = Objects.requireNonNull(LeAudioNativeInterface.getInstance(), |
| "LeAudioNativeInterface cannot be null when LeAudioService starts"); |
| mDatabaseManager = Objects.requireNonNull(mAdapterService.getDatabase(), |
| "DatabaseManager cannot be null when A2dpService starts"); |
| mAudioManager = getSystemService(AudioManager.class); |
| Objects.requireNonNull(mAudioManager, |
| "AudioManager cannot be null when LeAudioService starts"); |
| |
| // Start handler thread for state machines |
| mStateMachines.clear(); |
| mStateMachinesThread = new HandlerThread("LeAudioService.StateMachines"); |
| mStateMachinesThread.start(); |
| |
| mDeviceGroupIdMap.clear(); |
| mGroupIdConnectedMap.clear(); |
| |
| // 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(BluetoothLeAudio.ACTION_LE_AUDIO_CONNECTION_STATE_CHANGED); |
| mConnectionStateChangedReceiver = new ConnectionStateChangedReceiver(); |
| registerReceiver(mConnectionStateChangedReceiver, filter); |
| |
| // Mark service as started |
| setLeAudioService(this); |
| |
| mLeAudioNativeInterface.init(); |
| |
| return true; |
| } |
| |
| @Override |
| protected boolean stop() { |
| Log.i(TAG, "stop()"); |
| if (sLeAudioService == null) { |
| Log.w(TAG, "stop() called before start()"); |
| return true; |
| } |
| |
| // Cleanup native interfaces |
| mLeAudioNativeInterface.cleanup(); |
| mLeAudioNativeInterface = null; |
| |
| // Set the service and BLE devices as inactive |
| setLeAudioService(null); |
| |
| // Unregister broadcast receivers |
| unregisterReceiver(mBondStateChangedReceiver); |
| mBondStateChangedReceiver = null; |
| unregisterReceiver(mConnectionStateChangedReceiver); |
| mConnectionStateChangedReceiver = null; |
| |
| // Destroy state machines and stop handler thread |
| synchronized (mStateMachines) { |
| for (LeAudioStateMachine sm : mStateMachines.values()) { |
| sm.doQuit(); |
| sm.cleanup(); |
| } |
| mStateMachines.clear(); |
| } |
| |
| mDeviceGroupIdMap.clear(); |
| mGroupIdConnectedMap.clear(); |
| |
| if (mStateMachinesThread != null) { |
| mStateMachinesThread.quitSafely(); |
| mStateMachinesThread = null; |
| } |
| |
| mAudioManager = null; |
| mAdapterService = null; |
| return true; |
| } |
| |
| @Override |
| protected void cleanup() { |
| Log.i(TAG, "cleanup()"); |
| } |
| |
| public static synchronized LeAudioService getLeAudioService() { |
| if (sLeAudioService == null) { |
| Log.w(TAG, "getLeAudioService(): service is NULL"); |
| return null; |
| } |
| if (!sLeAudioService.isAvailable()) { |
| Log.w(TAG, "getLeAudioService(): service is not available"); |
| return null; |
| } |
| return sLeAudioService; |
| } |
| |
| private static synchronized void setLeAudioService(LeAudioService instance) { |
| if (DBG) { |
| Log.d(TAG, "setLeAudioService(): set to: " + instance); |
| } |
| sLeAudioService = instance; |
| } |
| |
| public boolean connect(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission"); |
| if (DBG) { |
| Log.d(TAG, "connect(): " + device); |
| } |
| |
| if (getConnectionPolicy(device) == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN) { |
| Log.e(TAG, "Cannot connect to " + device + " : CONNECTION_POLICY_FORBIDDEN"); |
| return false; |
| } |
| ParcelUuid[] featureUuids = mAdapterService.getRemoteUuids(device); |
| if (!ArrayUtils.contains(featureUuids, BluetoothUuid.LE_AUDIO)) { |
| Log.e(TAG, "Cannot connect to " + device + " : Remote does not have LE_AUDIO UUID"); |
| return false; |
| } |
| |
| int groupId = getGroupId(device); |
| |
| //TODO: disconnect active device if it's not in groupId |
| |
| if (DBG) { |
| Log.d(TAG, "connect(): " + device + "group id: " + groupId); |
| } |
| |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = getOrCreateStateMachine(device); |
| if (sm == null) { |
| Log.e(TAG, "Ignored connect request for " + device + " : no state machine"); |
| return false; |
| } |
| sm.sendMessage(LeAudioStateMachine.CONNECT, groupId); |
| } |
| |
| // Connect other devices from this group |
| if (groupId != LE_AUDIO_GROUP_ID_INVALID) { |
| for (BluetoothDevice storedDevice : mDeviceGroupIdMap.keySet()) { |
| if (device.equals(storedDevice)) { |
| continue; |
| } |
| if (getGroupId(storedDevice) != groupId) { |
| continue; |
| } |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = getOrCreateStateMachine(storedDevice); |
| if (sm == null) { |
| Log.e(TAG, "Ignored connect request for " + storedDevice |
| + " : no state machine"); |
| continue; |
| } |
| sm.sendMessage(LeAudioStateMachine.CONNECT, groupId); |
| } |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Disconnects LE Audio for the remote bluetooth device |
| * |
| * @param device is the device with which we would like to disconnect LE Audio |
| * @return true if profile disconnected, false if device not connected over LE Audio |
| */ |
| public boolean disconnect(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission"); |
| if (DBG) { |
| Log.d(TAG, "disconnect(): " + device); |
| } |
| |
| // Disconnect this device |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| Log.e(TAG, "Ignored disconnect request for " + device |
| + " : no state machine"); |
| return false; |
| } |
| sm.sendMessage(LeAudioStateMachine.DISCONNECT); |
| } |
| |
| // Disconnect other devices from this group |
| int groupId = getGroupId(device); |
| if (groupId != LE_AUDIO_GROUP_ID_INVALID) { |
| for (BluetoothDevice storedDevice : mDeviceGroupIdMap.keySet()) { |
| if (device.equals(storedDevice)) { |
| continue; |
| } |
| if (getGroupId(storedDevice) != groupId) { |
| continue; |
| } |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(storedDevice); |
| if (sm == null) { |
| Log.e(TAG, "Ignored disconnect request for " + storedDevice |
| + " : no state machine"); |
| continue; |
| } |
| sm.sendMessage(LeAudioStateMachine.DISCONNECT); |
| } |
| } |
| } |
| return true; |
| } |
| |
| List<BluetoothDevice> getConnectedDevices() { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| synchronized (mStateMachines) { |
| List<BluetoothDevice> devices = new ArrayList<>(); |
| for (LeAudioStateMachine sm : mStateMachines.values()) { |
| if (sm.isConnected()) { |
| devices.add(sm.getDevice()); |
| } |
| } |
| return devices; |
| } |
| } |
| |
| List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| ArrayList<BluetoothDevice> devices = new ArrayList<>(); |
| if (states == null) { |
| return devices; |
| } |
| final BluetoothDevice[] bondedDevices = mAdapterService.getBondedDevices(); |
| if (bondedDevices == null) { |
| return devices; |
| } |
| synchronized (mStateMachines) { |
| for (BluetoothDevice device : bondedDevices) { |
| final ParcelUuid[] featureUuids = device.getUuids(); |
| if (!ArrayUtils.contains(featureUuids, BluetoothUuid.LE_AUDIO)) { |
| continue; |
| } |
| int connectionState = BluetoothProfile.STATE_DISCONNECTED; |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| connectionState = sm.getConnectionState(); |
| } |
| for (int state : states) { |
| if (connectionState == state) { |
| devices.add(device); |
| break; |
| } |
| } |
| } |
| return devices; |
| } |
| } |
| |
| /** |
| * Get the current connection state of the profile |
| * |
| * @param device is the remote bluetooth device |
| * @return {@link BluetoothProfile#STATE_DISCONNECTED} if this profile is disconnected, |
| * {@link BluetoothProfile#STATE_CONNECTING} if this profile is being connected, |
| * {@link BluetoothProfile#STATE_CONNECTED} if this profile is connected, or |
| * {@link BluetoothProfile#STATE_DISCONNECTING} if this profile is being disconnected |
| */ |
| public int getConnectionState(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return sm.getConnectionState(); |
| } |
| } |
| |
| /** |
| * Set the active device. |
| * |
| * @param device the new active device |
| * @return true on success, otherwise false |
| */ |
| public boolean setActiveDevice(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission"); |
| if (DBG) { |
| Log.d(TAG, "setActiveDevice:" + device); |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Get the connected physical LeAudio devices that are active. |
| * |
| * @return the list of active devices. |
| */ |
| List<BluetoothDevice> getActiveDevices() { |
| if (DBG) { |
| Log.d(TAG, "getActiveDevices"); |
| } |
| ArrayList<BluetoothDevice> activeDevices = new ArrayList<>(); |
| return activeDevices; |
| } |
| |
| void messageFromNative(LeAudioStackEvent stackEvent) { |
| Log.d(TAG, "Message from native: " + stackEvent); |
| BluetoothDevice device = stackEvent.device; |
| |
| if (stackEvent.type == LeAudioStackEvent.EVENT_TYPE_CONNECTION_STATE_CHANGED) { |
| // Some events require device state machine |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| switch (stackEvent.valueInt1) { |
| case LeAudioStackEvent.CONNECTION_STATE_CONNECTED: |
| case LeAudioStackEvent.CONNECTION_STATE_CONNECTING: |
| sm = getOrCreateStateMachine(device); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| if (sm == null) { |
| Log.e(TAG, "Cannot process stack event: no state machine: " + stackEvent); |
| return; |
| } |
| |
| sm.sendMessage(LeAudioStateMachine.STACK_EVENT, stackEvent); |
| return; |
| } |
| } |
| |
| // Some events do not require device state machine |
| if (stackEvent.type == LeAudioStackEvent.EVENT_TYPE_GROUP_STATUS_CHANGED) { |
| int group_id = stackEvent.valueInt1; |
| int group_status = stackEvent.valueInt2; |
| int group_flags = stackEvent.valueInt3; |
| |
| // TODO: Handle Stream events |
| switch (group_status) { |
| case LeAudioStackEvent.GROUP_STATUS_IDLE: |
| case LeAudioStackEvent.GROUP_STATUS_RECONFIGURED: |
| case LeAudioStackEvent.GROUP_STATUS_DESTROYED: |
| case LeAudioStackEvent.GROUP_STATUS_SUSPENDED: |
| setActiveDevice(null); |
| // TODO: Get all devices with a group and Unassign? or they are already unasigned |
| // This event may come after removing all the nodes from a certain group but only that. |
| break; |
| case LeAudioStackEvent.GROUP_STATUS_STREAMING: |
| BluetoothDevice streaming_device = getConnectedPeerDevices(group_id).get(0); |
| setActiveDevice(streaming_device); |
| break; |
| default: |
| break; |
| } |
| |
| } |
| } |
| |
| private LeAudioStateMachine getOrCreateStateMachine(BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "getOrCreateStateMachine failed: device cannot be null"); |
| return null; |
| } |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| return sm; |
| } |
| // Limit the maximum number of state machines to avoid DoS attack |
| if (mStateMachines.size() >= MAX_LE_AUDIO_STATE_MACHINES) { |
| Log.e(TAG, "Maximum number of LeAudio state machines reached: " |
| + MAX_LE_AUDIO_STATE_MACHINES); |
| return null; |
| } |
| if (DBG) { |
| Log.d(TAG, "Creating a new state machine for " + device); |
| } |
| sm = LeAudioStateMachine.make(device, this, |
| mLeAudioNativeInterface, mStateMachinesThread.getLooper()); |
| mStateMachines.put(device, sm); |
| return sm; |
| } |
| } |
| |
| // 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); |
| Objects.requireNonNull(device, "ACTION_BOND_STATE_CHANGED with no EXTRA_DEVICE"); |
| bondStateChanged(device, state); |
| } |
| } |
| |
| /** |
| * 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; |
| } |
| mDeviceGroupIdMap.remove(device); |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return; |
| } |
| if (sm.getConnectionState() != BluetoothProfile.STATE_DISCONNECTED) { |
| return; |
| } |
| removeStateMachine(device); |
| } |
| } |
| |
| private void removeStateMachine(BluetoothDevice device) { |
| synchronized (mStateMachines) { |
| LeAudioStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| Log.w(TAG, "removeStateMachine: device " + device |
| + " does not have a state machine"); |
| return; |
| } |
| Log.i(TAG, "removeStateMachine: removing state machine for device: " + device); |
| sm.doQuit(); |
| sm.cleanup(); |
| mStateMachines.remove(device); |
| } |
| } |
| |
| private List<BluetoothDevice> getConnectedPeerDevices(int groupId) { |
| List<BluetoothDevice> result = new ArrayList<>(); |
| for (BluetoothDevice peerDevice : getConnectedDevices()) { |
| if (getGroupId(peerDevice) == groupId) { |
| result.add(peerDevice); |
| } |
| } |
| return result; |
| } |
| |
| @VisibleForTesting |
| synchronized void connectionStateChanged(BluetoothDevice device, int fromState, |
| int toState) { |
| if ((device == null) || (fromState == toState)) { |
| Log.e(TAG, "connectionStateChanged: unexpected invocation. device=" + device |
| + " fromState=" + fromState + " toState=" + toState); |
| return; |
| } |
| if (toState == BluetoothProfile.STATE_CONNECTED) { |
| int myGroupId = getGroupId(device); |
| if (myGroupId == LE_AUDIO_GROUP_ID_INVALID |
| || getConnectedPeerDevices(myGroupId).size() == 1) { |
| // Log LE Audio connection event if we are the first device in a set |
| // Or when the GroupId has not been found |
| // MetricsLogger.logProfileConnectionEvent( |
| // BluetoothMetricsProto.ProfileId.LE_AUDIO); |
| } |
| if (!mGroupIdConnectedMap.getOrDefault(myGroupId, false)) { |
| mGroupIdConnectedMap.put(myGroupId, true); |
| } |
| } |
| if (fromState == BluetoothProfile.STATE_CONNECTED && getConnectedDevices().isEmpty()) { |
| setActiveDevice(null); |
| int myGroupId = getGroupId(device); |
| mGroupIdConnectedMap.put(myGroupId, false); |
| } |
| // Check if the device is disconnected - if unbond, remove the state machine |
| if (toState == BluetoothProfile.STATE_DISCONNECTED) { |
| int bondState = mAdapterService.getBondState(device); |
| if (bondState == BluetoothDevice.BOND_NONE) { |
| if (DBG) { |
| Log.d(TAG, device + " is unbond. Remove state machine"); |
| } |
| removeStateMachine(device); |
| } |
| } |
| } |
| |
| private class ConnectionStateChangedReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!BluetoothLeAudio.ACTION_LE_AUDIO_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); |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| public boolean okToConnect(BluetoothDevice device) { |
| // Check if this is an incoming connection in Quiet mode. |
| if (mAdapterService.isQuietModeEnabled()) { |
| Log.e(TAG, "okToConnect: cannot connect to " + device + " : quiet mode enabled"); |
| return false; |
| } |
| // Check connectionPolicy and accept or reject the connection. |
| int connectionPolicy = getConnectionPolicy(device); |
| int bondState = mAdapterService.getBondState(device); |
| // Allow this connection only if the device is bonded. Any attempt to connect while |
| // bonding would potentially lead to an unauthorized connection. |
| if (bondState != BluetoothDevice.BOND_BONDED) { |
| Log.w(TAG, "okToConnect: return false, bondState=" + bondState); |
| return false; |
| } else if (connectionPolicy != BluetoothProfile.CONNECTION_POLICY_UNKNOWN |
| && connectionPolicy != BluetoothProfile.CONNECTION_POLICY_ALLOWED) { |
| // Otherwise, reject the connection if connectionPolicy is not valid. |
| Log.w(TAG, "okToConnect: return false, connectionPolicy=" + connectionPolicy); |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Set connection policy of the profile and connects it if connectionPolicy is |
| * {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED} or disconnects if connectionPolicy is |
| * {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN} |
| * |
| * <p> The device should already be paired. |
| * Connection policy can be one of: |
| * {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED}, |
| * {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN}, |
| * {@link BluetoothProfile#CONNECTION_POLICY_UNKNOWN} |
| * |
| * @param device the remote device |
| * @param connectionPolicy is the connection policy to set to for this profile |
| * @return true on success, otherwise false |
| */ |
| public boolean setConnectionPolicy(BluetoothDevice device, int connectionPolicy) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| if (DBG) { |
| Log.d(TAG, "Saved connectionPolicy " + device + " = " + connectionPolicy); |
| } |
| |
| if (!mDatabaseManager.setProfileConnectionPolicy(device, BluetoothProfile.LE_AUDIO, |
| connectionPolicy)) { |
| return false; |
| } |
| if (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_ALLOWED) { |
| connect(device); |
| } else if (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN) { |
| disconnect(device); |
| } |
| return true; |
| } |
| |
| /** |
| * Get the connection policy of the profile. |
| * |
| * <p> The connection policy can be any of: |
| * {@link BluetoothProfile#CONNECTION_POLICY_ALLOWED}, |
| * {@link BluetoothProfile#CONNECTION_POLICY_FORBIDDEN}, |
| * {@link BluetoothProfile#CONNECTION_POLICY_UNKNOWN} |
| * |
| * @param device Bluetooth device |
| * @return connection policy of the device |
| * @hide |
| */ |
| public int getConnectionPolicy(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| return mDatabaseManager |
| .getProfileConnectionPolicy(device, BluetoothProfile.LE_AUDIO); |
| } |
| |
| /** |
| * Get device group id. Devices with same group id belong to same group (i.e left and right |
| * earbud) |
| * @param device LE Audio capable device |
| * @return group id that this device currently belongs to |
| */ |
| public int getGroupId(BluetoothDevice device) { |
| if (device == null) { |
| return LE_AUDIO_GROUP_ID_INVALID; |
| } |
| //TODO: implement |
| return LE_AUDIO_GROUP_ID_INVALID; |
| } |
| |
| /** |
| * Binder object: must be a static class or memory leak may occur |
| */ |
| @VisibleForTesting |
| static class BluetoothLeAudioBinder extends IBluetoothLeAudio.Stub |
| implements IProfileServiceBinder { |
| private LeAudioService mService; |
| |
| private LeAudioService getService() { |
| if (!Utils.checkCaller()) { |
| Log.w(TAG, "LeAudio call not allowed for non-active user"); |
| return null; |
| } |
| |
| if (mService != null && mService.isAvailable()) { |
| return mService; |
| } |
| return null; |
| } |
| |
| BluetoothLeAudioBinder(LeAudioService svc) { |
| mService = svc; |
| } |
| |
| @Override |
| public void cleanup() { |
| mService = null; |
| } |
| |
| @Override |
| public boolean connect(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.connect(device); |
| } |
| |
| @Override |
| public boolean disconnect(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.disconnect(device); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getConnectedDevices() { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return new ArrayList<>(0); |
| } |
| return service.getConnectedDevices(); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return new ArrayList<>(0); |
| } |
| return service.getDevicesMatchingConnectionStates(states); |
| } |
| |
| @Override |
| public int getConnectionState(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return service.getConnectionState(device); |
| } |
| |
| @Override |
| public boolean setActiveDevice(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.setActiveDevice(device); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getActiveDevices() { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return new ArrayList<>(); |
| } |
| return service.getActiveDevices(); |
| } |
| |
| @Override |
| public boolean setConnectionPolicy(BluetoothDevice device, int connectionPolicy) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.setConnectionPolicy(device, connectionPolicy); |
| } |
| |
| @Override |
| public int getConnectionPolicy(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return BluetoothProfile.CONNECTION_POLICY_UNKNOWN; |
| } |
| return service.getConnectionPolicy(device); |
| } |
| |
| @Override |
| public int getGroupId(BluetoothDevice device) { |
| LeAudioService service = getService(); |
| if (service == null) { |
| return LE_AUDIO_GROUP_ID_INVALID; |
| } |
| |
| return service.getGroupId(device); |
| } |
| } |
| |
| @Override |
| public void dump(StringBuilder sb) { |
| super.dump(sb); |
| // TODO: Dump all state machines |
| } |
| } |
