| /* |
| * Copyright 2021 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.vc; |
| |
| import static android.Manifest.permission.BLUETOOTH_CONNECT; |
| |
| import static com.android.bluetooth.Utils.enforceBluetoothPrivilegedPermission; |
| |
| import android.annotation.RequiresPermission; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.BluetoothUuid; |
| import android.bluetooth.BluetoothVolumeControl; |
| import android.bluetooth.IBluetoothVolumeControl; |
| import android.content.AttributionSource; |
| 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.ServiceFactory; |
| 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; |
| |
| public class VolumeControlService extends ProfileService { |
| private static final boolean DBG = false; |
| private static final String TAG = "VolumeControlService"; |
| |
| // Upper limit of all VolumeControl devices: Bonded or Connected |
| private static final int MAX_VC_STATE_MACHINES = 10; |
| private static VolumeControlService sVolumeControlService; |
| |
| private AdapterService mAdapterService; |
| private HandlerThread mStateMachinesThread; |
| private BluetoothDevice mPreviousAudioDevice; |
| |
| @VisibleForTesting |
| VolumeControlNativeInterface mVolumeControlNativeInterface; |
| @VisibleForTesting |
| AudioManager mAudioManager; |
| |
| private final Map<BluetoothDevice, VolumeControlStateMachine> mStateMachines = new HashMap<>(); |
| |
| private BroadcastReceiver mBondStateChangedReceiver; |
| private BroadcastReceiver mConnectionStateChangedReceiver; |
| |
| private final ServiceFactory mFactory = new ServiceFactory(); |
| |
| @Override |
| protected IProfileServiceBinder initBinder() { |
| return new BluetoothVolumeControlBinder(this); |
| } |
| |
| @Override |
| protected void create() { |
| if (DBG) { |
| Log.d(TAG, "create()"); |
| } |
| } |
| |
| @Override |
| protected boolean start() { |
| if (DBG) { |
| Log.d(TAG, "start()"); |
| } |
| if (sVolumeControlService != null) { |
| throw new IllegalStateException("start() called twice"); |
| } |
| |
| // Get AdapterService, VolumeControlNativeInterface, AudioManager. |
| // None of them can be null. |
| mAdapterService = Objects.requireNonNull(AdapterService.getAdapterService(), |
| "AdapterService cannot be null when VolumeControlService starts"); |
| mVolumeControlNativeInterface = Objects.requireNonNull( |
| VolumeControlNativeInterface.getInstance(), |
| "VolumeControlNativeInterface cannot be null when VolumeControlService starts"); |
| mAudioManager = getSystemService(AudioManager.class); |
| Objects.requireNonNull(mAudioManager, |
| "AudioManager cannot be null when VolumeControlService starts"); |
| |
| // Start handler thread for state machines |
| mStateMachines.clear(); |
| mStateMachinesThread = new HandlerThread("VolumeControlService.StateMachines"); |
| mStateMachinesThread.start(); |
| |
| // 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(BluetoothVolumeControl.ACTION_CONNECTION_STATE_CHANGED); |
| mConnectionStateChangedReceiver = new ConnectionStateChangedReceiver(); |
| registerReceiver(mConnectionStateChangedReceiver, filter); |
| |
| // Mark service as started |
| setVolumeControlService(this); |
| |
| // Initialize native interface |
| mVolumeControlNativeInterface.init(); |
| |
| return true; |
| } |
| |
| @Override |
| protected boolean stop() { |
| if (DBG) { |
| Log.d(TAG, "stop()"); |
| } |
| if (sVolumeControlService == null) { |
| Log.w(TAG, "stop() called before start()"); |
| return true; |
| } |
| |
| // Cleanup native interface |
| mVolumeControlNativeInterface.cleanup(); |
| mVolumeControlNativeInterface = null; |
| |
| // Mark service as stopped |
| setVolumeControlService(null); |
| |
| // Unregister broadcast receivers |
| unregisterReceiver(mBondStateChangedReceiver); |
| mBondStateChangedReceiver = null; |
| unregisterReceiver(mConnectionStateChangedReceiver); |
| mConnectionStateChangedReceiver = null; |
| |
| // Destroy state machines and stop handler thread |
| synchronized (mStateMachines) { |
| for (VolumeControlStateMachine sm : mStateMachines.values()) { |
| sm.doQuit(); |
| sm.cleanup(); |
| } |
| mStateMachines.clear(); |
| } |
| |
| |
| if (mStateMachinesThread != null) { |
| mStateMachinesThread.quitSafely(); |
| mStateMachinesThread = null; |
| } |
| |
| // Clear AdapterService, VolumeControlNativeInterface |
| mAudioManager = null; |
| mVolumeControlNativeInterface = null; |
| mAdapterService = null; |
| |
| return true; |
| } |
| |
| @Override |
| protected void cleanup() { |
| if (DBG) { |
| Log.d(TAG, "cleanup()"); |
| } |
| } |
| |
| /** |
| * Get the VolumeControlService instance |
| * @return VolumeControlService instance |
| */ |
| public static synchronized VolumeControlService getVolumeControlService() { |
| if (sVolumeControlService == null) { |
| Log.w(TAG, "getVolumeControlService(): service is NULL"); |
| return null; |
| } |
| |
| if (!sVolumeControlService.isAvailable()) { |
| Log.w(TAG, "getVolumeControlService(): service is not available"); |
| return null; |
| } |
| return sVolumeControlService; |
| } |
| |
| private static synchronized void setVolumeControlService(VolumeControlService instance) { |
| if (DBG) { |
| Log.d(TAG, "setVolumeControlService(): set to: " + instance); |
| } |
| sVolumeControlService = instance; |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| public boolean connect(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| if (DBG) { |
| Log.d(TAG, "connect(): " + device); |
| } |
| if (device == null) { |
| return false; |
| } |
| |
| if (getConnectionPolicy(device) == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN) { |
| return false; |
| } |
| ParcelUuid[] featureUuids = mAdapterService.getRemoteUuids(device); |
| if (!ArrayUtils.contains(featureUuids, BluetoothUuid.VOLUME_CONTROL)) { |
| Log.e(TAG, "Cannot connect to " + device |
| + " : Remote does not have Volume Control UUID"); |
| return false; |
| } |
| |
| |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine smConnect = getOrCreateStateMachine(device); |
| if (smConnect == null) { |
| Log.e(TAG, "Cannot connect to " + device + " : no state machine"); |
| } |
| smConnect.sendMessage(VolumeControlStateMachine.CONNECT); |
| } |
| |
| return true; |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| public boolean disconnect(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| if (DBG) { |
| Log.d(TAG, "disconnect(): " + device); |
| } |
| if (device == null) { |
| return false; |
| } |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine sm = getOrCreateStateMachine(device); |
| if (sm != null) { |
| sm.sendMessage(VolumeControlStateMachine.DISCONNECT); |
| } |
| } |
| |
| return true; |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| List<BluetoothDevice> getConnectedDevices() { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| synchronized (mStateMachines) { |
| List<BluetoothDevice> devices = new ArrayList<>(); |
| for (VolumeControlStateMachine sm : mStateMachines.values()) { |
| if (sm.isConnected()) { |
| devices.add(sm.getDevice()); |
| } |
| } |
| return devices; |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| @VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE) |
| 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; |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED 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.VOLUME_CONTROL)) { |
| continue; |
| } |
| int connectionState = BluetoothProfile.STATE_DISCONNECTED; |
| VolumeControlStateMachine 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 list of devices that have state machines. |
| * |
| * @return the list of devices that have state machines |
| */ |
| @VisibleForTesting |
| List<BluetoothDevice> getDevices() { |
| List<BluetoothDevice> devices = new ArrayList<>(); |
| synchronized (mStateMachines) { |
| for (VolumeControlStateMachine sm : mStateMachines.values()) { |
| devices.add(sm.getDevice()); |
| } |
| return devices; |
| } |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| public int getConnectionState(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_CONNECT, |
| "Need BLUETOOTH_CONNECT permission"); |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return sm.getConnectionState(); |
| } |
| } |
| |
| /** |
| * 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 |
| */ |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| public boolean setConnectionPolicy(BluetoothDevice device, int connectionPolicy) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| if (DBG) { |
| Log.d(TAG, "Saved connectionPolicy " + device + " = " + connectionPolicy); |
| } |
| mAdapterService.getDatabase() |
| .setProfileConnectionPolicy(device, BluetoothProfile.VOLUME_CONTROL, |
| connectionPolicy); |
| if (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_ALLOWED) { |
| connect(device); |
| } else if (connectionPolicy == BluetoothProfile.CONNECTION_POLICY_FORBIDDEN) { |
| disconnect(device); |
| } |
| return true; |
| } |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_PRIVILEGED) |
| public int getConnectionPolicy(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PRIVILEGED, |
| "Need BLUETOOTH_PRIVILEGED permission"); |
| return mAdapterService.getDatabase() |
| .getProfileConnectionPolicy(device, BluetoothProfile.VOLUME_CONTROL); |
| } |
| |
| void setVolume(BluetoothDevice device, int volume) { |
| mVolumeControlNativeInterface.setVolume(device, volume); |
| } |
| |
| void setVolumeGroup(int groupId, int volume) { |
| mVolumeControlNativeInterface.setVolumeGroup(groupId, volume); |
| } |
| |
| void handleVolumeControlChanged(BluetoothDevice device, int groupId, |
| int volume, boolean mute) { |
| /* TODO handle volume change for group in case of unicast le audio |
| * or per device in case of broadcast or simple remote controller. |
| * Note: minimum volume is 0 and maximum 255. |
| */ |
| } |
| |
| void messageFromNative(VolumeControlStackEvent stackEvent) { |
| Objects.requireNonNull(stackEvent.device, |
| "Device should never be null, event: " + stackEvent); |
| |
| Intent intent = null; |
| if (stackEvent.type == VolumeControlStackEvent.EVENT_TYPE_VOLUME_STATE_CHANGED) { |
| handleVolumeControlChanged(stackEvent.device, stackEvent.valueInt1, |
| stackEvent.valueInt2, stackEvent.valueBool1); |
| } |
| |
| if (intent != null) { |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT |
| | Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); |
| sendBroadcast(intent, BLUETOOTH_CONNECT); |
| return; |
| } |
| |
| synchronized (mStateMachines) { |
| BluetoothDevice device = stackEvent.device; |
| VolumeControlStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| if (stackEvent.type |
| == VolumeControlStackEvent.EVENT_TYPE_CONNECTION_STATE_CHANGED) { |
| switch (stackEvent.valueInt1) { |
| case VolumeControlStackEvent.CONNECTION_STATE_CONNECTED: |
| case VolumeControlStackEvent.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(VolumeControlStateMachine.STACK_EVENT, stackEvent); |
| } |
| } |
| |
| private VolumeControlStateMachine getOrCreateStateMachine(BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "getOrCreateStateMachine failed: device cannot be null"); |
| return null; |
| } |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| return sm; |
| } |
| // Limit the maximum number of state machines to avoid DoS attack |
| if (mStateMachines.size() >= MAX_VC_STATE_MACHINES) { |
| Log.e(TAG, "Maximum number of VolumeControl state machines reached: " |
| + MAX_VC_STATE_MACHINES); |
| return null; |
| } |
| if (DBG) { |
| Log.d(TAG, "Creating a new state machine for " + device); |
| } |
| sm = VolumeControlStateMachine.make(device, this, |
| mVolumeControlNativeInterface, 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; |
| } |
| |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return; |
| } |
| if (sm.getConnectionState() != BluetoothProfile.STATE_DISCONNECTED) { |
| return; |
| } |
| removeStateMachine(device); |
| } |
| } |
| |
| private void removeStateMachine(BluetoothDevice device) { |
| synchronized (mStateMachines) { |
| VolumeControlStateMachine 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); |
| } |
| } |
| |
| @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; |
| } |
| |
| // 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 (!BluetoothVolumeControl.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 a static class or memory leak may occur |
| */ |
| @VisibleForTesting |
| static class BluetoothVolumeControlBinder extends IBluetoothVolumeControl.Stub |
| implements IProfileServiceBinder { |
| private VolumeControlService mService; |
| |
| @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT) |
| private VolumeControlService getService(AttributionSource source) { |
| if (!Utils.checkCallerIsSystemOrActiveUser(TAG) |
| || !Utils.checkServiceAvailable(mService, TAG) |
| || !Utils.checkConnectPermissionForDataDelivery(mService, source, TAG)) { |
| return null; |
| } |
| return mService; |
| } |
| |
| BluetoothVolumeControlBinder(VolumeControlService svc) { |
| mService = svc; |
| } |
| |
| @Override |
| public void cleanup() { |
| mService = null; |
| } |
| |
| @Override |
| public boolean connect(BluetoothDevice device, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return false; |
| } |
| return service.connect(device); |
| } |
| |
| @Override |
| public boolean disconnect(BluetoothDevice device, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return false; |
| } |
| return service.disconnect(device); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getConnectedDevices(AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return new ArrayList<>(); |
| } |
| enforceBluetoothPrivilegedPermission(service); |
| return service.getConnectedDevices(); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states, |
| AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return new ArrayList<>(); |
| } |
| return service.getDevicesMatchingConnectionStates(states); |
| } |
| |
| @Override |
| public int getConnectionState(BluetoothDevice device, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return service.getConnectionState(device); |
| } |
| |
| @Override |
| public boolean setConnectionPolicy(BluetoothDevice device, int connectionPolicy, |
| AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return false; |
| } |
| return service.setConnectionPolicy(device, connectionPolicy); |
| } |
| |
| @Override |
| public int getConnectionPolicy(BluetoothDevice device, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return BluetoothProfile.CONNECTION_POLICY_UNKNOWN; |
| } |
| return service.getConnectionPolicy(device); |
| } |
| |
| @Override |
| public void setVolume(BluetoothDevice device, int volume, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return; |
| } |
| service.setVolume(device, volume); |
| } |
| |
| @Override |
| public void setVolumeGroup(int groupId, int volume, AttributionSource source) { |
| VolumeControlService service = getService(source); |
| if (service == null) { |
| return; |
| } |
| service.setVolumeGroup(groupId, volume); |
| } |
| } |
| |
| @Override |
| public void dump(StringBuilder sb) { |
| super.dump(sb); |
| for (VolumeControlStateMachine sm : mStateMachines.values()) { |
| sm.dump(sb); |
| } |
| } |
| } |
