| /* |
| * Copyright (C) 2012 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.a2dp; |
| |
| import android.bluetooth.BluetoothA2dp; |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothCodecConfig; |
| import android.bluetooth.BluetoothCodecStatus; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.BluetoothUuid; |
| import android.bluetooth.IBluetoothA2dp; |
| 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.provider.Settings; |
| import android.support.annotation.GuardedBy; |
| import android.support.annotation.VisibleForTesting; |
| import android.util.Log; |
| |
| import com.android.bluetooth.BluetoothMetricsProto; |
| import com.android.bluetooth.Utils; |
| import com.android.bluetooth.avrcp.AvrcpTargetService; |
| import com.android.bluetooth.btservice.AdapterService; |
| import com.android.bluetooth.btservice.MetricsLogger; |
| import com.android.bluetooth.btservice.ProfileService; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.ConcurrentMap; |
| |
| /** |
| * Provides Bluetooth A2DP profile, as a service in the Bluetooth application. |
| * @hide |
| */ |
| public class A2dpService extends ProfileService { |
| private static final boolean DBG = true; |
| private static final String TAG = "A2dpService"; |
| |
| private static A2dpService sA2dpService; |
| |
| private BluetoothAdapter mAdapter; |
| private AdapterService mAdapterService; |
| private HandlerThread mStateMachinesThread; |
| |
| @VisibleForTesting |
| A2dpNativeInterface mA2dpNativeInterface; |
| private AudioManager mAudioManager; |
| private A2dpCodecConfig mA2dpCodecConfig; |
| |
| @GuardedBy("mStateMachines") |
| private BluetoothDevice mActiveDevice; |
| private final ConcurrentMap<BluetoothDevice, A2dpStateMachine> mStateMachines = |
| new ConcurrentHashMap<>(); |
| |
| // Upper limit of all A2DP devices: Bonded or Connected |
| private static final int MAX_A2DP_STATE_MACHINES = 50; |
| // Upper limit of all A2DP devices that are Connected or Connecting |
| private int mMaxConnectedAudioDevices = 1; |
| // A2DP Offload Enabled in platform |
| boolean mA2dpOffloadEnabled = false; |
| |
| private BroadcastReceiver mBondStateChangedReceiver; |
| private BroadcastReceiver mConnectionStateChangedReceiver; |
| |
| @Override |
| protected IProfileServiceBinder initBinder() { |
| return new BluetoothA2dpBinder(this); |
| } |
| |
| @Override |
| protected void create() { |
| Log.i(TAG, "create()"); |
| } |
| |
| @Override |
| protected boolean start() { |
| Log.i(TAG, "start()"); |
| if (sA2dpService != 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 A2dpService starts"); |
| mAdapterService = Objects.requireNonNull(AdapterService.getAdapterService(), |
| "AdapterService cannot be null when A2dpService starts"); |
| mA2dpNativeInterface = Objects.requireNonNull(A2dpNativeInterface.getInstance(), |
| "A2dpNativeInterface cannot be null when A2dpService starts"); |
| mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE); |
| Objects.requireNonNull(mAudioManager, |
| "AudioManager cannot be null when A2dpService starts"); |
| |
| // Step 2: Get maximum number of connected audio devices |
| mMaxConnectedAudioDevices = mAdapterService.getMaxConnectedAudioDevices(); |
| Log.i(TAG, "Max connected audio devices set to " + mMaxConnectedAudioDevices); |
| |
| // Step 3: Start handler thread for state machines |
| mStateMachines.clear(); |
| mStateMachinesThread = new HandlerThread("A2dpService.StateMachines"); |
| mStateMachinesThread.start(); |
| |
| // Step 4: Setup codec config |
| mA2dpCodecConfig = new A2dpCodecConfig(this, mA2dpNativeInterface); |
| |
| // Step 5: Initialize native interface |
| mA2dpNativeInterface.init(mMaxConnectedAudioDevices, |
| mA2dpCodecConfig.codecConfigPriorities()); |
| |
| // Step 6: Check if A2DP is in offload mode |
| mA2dpOffloadEnabled = mAdapterService.isA2dpOffloadEnabled(); |
| if (DBG) { |
| Log.d(TAG, "A2DP offload flag set to " + mA2dpOffloadEnabled); |
| } |
| |
| // Step 7: 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(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED); |
| mConnectionStateChangedReceiver = new ConnectionStateChangedReceiver(); |
| registerReceiver(mConnectionStateChangedReceiver, filter); |
| |
| // Step 8: Mark service as started |
| setA2dpService(this); |
| |
| // Step 9: Clear active device |
| setActiveDevice(null); |
| |
| return true; |
| } |
| |
| @Override |
| protected boolean stop() { |
| Log.i(TAG, "stop()"); |
| if (sA2dpService == null) { |
| Log.w(TAG, "stop() called before start()"); |
| return true; |
| } |
| |
| // Step 10: Store volume if there is an active device |
| if (mActiveDevice != null && AvrcpTargetService.get() != null) { |
| AvrcpTargetService.get().storeVolumeForDevice(mActiveDevice); |
| } |
| |
| // Step 9: Clear active device and stop playing audio |
| removeActiveDevice(true); |
| |
| // Step 8: Mark service as stopped |
| setA2dpService(null); |
| |
| // Step 7: Unregister broadcast receivers |
| unregisterReceiver(mConnectionStateChangedReceiver); |
| mConnectionStateChangedReceiver = null; |
| unregisterReceiver(mBondStateChangedReceiver); |
| mBondStateChangedReceiver = null; |
| |
| // Step 6: Cleanup native interface |
| mA2dpNativeInterface.cleanup(); |
| mA2dpNativeInterface = null; |
| |
| // Step 5: Clear codec config |
| mA2dpCodecConfig = null; |
| |
| // Step 4: Destroy state machines and stop handler thread |
| synchronized (mStateMachines) { |
| for (A2dpStateMachine sm : mStateMachines.values()) { |
| sm.doQuit(); |
| sm.cleanup(); |
| } |
| mStateMachines.clear(); |
| } |
| mStateMachinesThread.quitSafely(); |
| mStateMachinesThread = null; |
| |
| // Step 2: Reset maximum number of connected audio devices |
| mMaxConnectedAudioDevices = 1; |
| |
| // Step 1: Clear BluetoothAdapter, AdapterService, A2dpNativeInterface, AudioManager |
| mAudioManager = null; |
| mA2dpNativeInterface = null; |
| mAdapterService = null; |
| mAdapter = null; |
| |
| return true; |
| } |
| |
| @Override |
| protected void cleanup() { |
| Log.i(TAG, "cleanup()"); |
| } |
| |
| public static synchronized A2dpService getA2dpService() { |
| if (sA2dpService == null) { |
| Log.w(TAG, "getA2dpService(): service is null"); |
| return null; |
| } |
| if (!sA2dpService.isAvailable()) { |
| Log.w(TAG, "getA2dpService(): service is not available"); |
| return null; |
| } |
| return sA2dpService; |
| } |
| |
| private static synchronized void setA2dpService(A2dpService instance) { |
| if (DBG) { |
| Log.d(TAG, "setA2dpService(): set to: " + instance); |
| } |
| sA2dpService = instance; |
| } |
| |
| public 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) { |
| Log.e(TAG, "Cannot connect to " + device + " : PRIORITY_OFF"); |
| return false; |
| } |
| if (!BluetoothUuid.isUuidPresent(mAdapterService.getRemoteUuids(device), |
| BluetoothUuid.AudioSink)) { |
| Log.e(TAG, "Cannot connect to " + device + " : Remote does not have A2DP Sink UUID"); |
| return false; |
| } |
| |
| synchronized (mStateMachines) { |
| if (!connectionAllowedCheckMaxDevices(device)) { |
| Log.e(TAG, "Cannot connect to " + device + " : too many connected devices"); |
| return false; |
| } |
| A2dpStateMachine smConnect = getOrCreateStateMachine(device); |
| if (smConnect == null) { |
| Log.e(TAG, "Cannot connect to " + device + " : no state machine"); |
| return false; |
| } |
| smConnect.sendMessage(A2dpStateMachine.CONNECT); |
| return true; |
| } |
| } |
| |
| boolean disconnect(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission"); |
| if (DBG) { |
| Log.d(TAG, "disconnect(): " + device); |
| } |
| |
| synchronized (mStateMachines) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| Log.e(TAG, "Ignored disconnect request for " + device + " : no state machine"); |
| return false; |
| } |
| sm.sendMessage(A2dpStateMachine.DISCONNECT); |
| return true; |
| } |
| } |
| |
| public List<BluetoothDevice> getConnectedDevices() { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| synchronized (mStateMachines) { |
| List<BluetoothDevice> devices = new ArrayList<>(); |
| for (A2dpStateMachine sm : mStateMachines.values()) { |
| if (sm.isConnected()) { |
| devices.add(sm.getDevice()); |
| } |
| } |
| return devices; |
| } |
| } |
| |
| /** |
| * Check whether can connect to a peer device. |
| * The check considers the maximum number of connected peers. |
| * |
| * @param device the peer device to connect to |
| * @return true if connection is allowed, otherwise false |
| */ |
| private boolean connectionAllowedCheckMaxDevices(BluetoothDevice device) { |
| int connected = 0; |
| // Count devices that are in the process of connecting or already connected |
| synchronized (mStateMachines) { |
| for (A2dpStateMachine sm : mStateMachines.values()) { |
| switch (sm.getConnectionState()) { |
| case BluetoothProfile.STATE_CONNECTING: |
| case BluetoothProfile.STATE_CONNECTED: |
| if (Objects.equals(device, sm.getDevice())) { |
| return true; // Already connected or accounted for |
| } |
| connected++; |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| return (connected < mMaxConnectedAudioDevices); |
| } |
| |
| /** |
| * 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 |
| * @param isOutgoingRequest if true, the check is for outgoing connection |
| * request, otherwise is for incoming connection request |
| * @return true if connection is allowed, otherwise false |
| */ |
| @VisibleForTesting(otherwise = VisibleForTesting.PACKAGE_PRIVATE) |
| public boolean okToConnect(BluetoothDevice device, boolean isOutgoingRequest) { |
| Log.i(TAG, "okToConnect: device " + device + " isOutgoingRequest: " + isOutgoingRequest); |
| // Check if this is an incoming connection in Quiet mode. |
| if (mAdapterService.isQuietModeEnabled() && !isOutgoingRequest) { |
| Log.e(TAG, "okToConnect: cannot connect to " + device + " : quiet mode enabled"); |
| return false; |
| } |
| // Check if too many devices |
| if (!connectionAllowedCheckMaxDevices(device)) { |
| Log.e(TAG, "okToConnect: cannot connect to " + device |
| + " : too many connected devices"); |
| return false; |
| } |
| // Check priority and accept or reject the connection. |
| // Note: Logic can be simplified, but keeping it this way for readability |
| int priority = getPriority(device); |
| int bondState = mAdapterService.getBondState(device); |
| // If priority is undefined, it is likely that service discovery has not completed and peer |
| // initiated the connection. Allow this connection only if the device is bonded or bonding |
| boolean serviceDiscoveryPending = (priority == BluetoothProfile.PRIORITY_UNDEFINED) |
| && (bondState == BluetoothDevice.BOND_BONDING |
| || bondState == BluetoothDevice.BOND_BONDED); |
| // Also allow connection when device is bonded/bonding and priority is ON/AUTO_CONNECT. |
| boolean isEnabled = (priority == BluetoothProfile.PRIORITY_ON |
| || priority == BluetoothProfile.PRIORITY_AUTO_CONNECT) |
| && (bondState == BluetoothDevice.BOND_BONDED |
| || bondState == BluetoothDevice.BOND_BONDING); |
| if (!serviceDiscoveryPending && !isEnabled) { |
| // Otherwise, reject the connection if no service discovery is pending and priority is |
| // neither PRIORITY_ON nor PRIORITY_AUTO_CONNECT |
| Log.w(TAG, "okToConnect: return false, priority=" + priority + ", bondState=" |
| + bondState); |
| return false; |
| } |
| return true; |
| } |
| |
| List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| List<BluetoothDevice> devices = new ArrayList<>(); |
| Set<BluetoothDevice> bondedDevices = mAdapter.getBondedDevices(); |
| synchronized (mStateMachines) { |
| for (BluetoothDevice device : bondedDevices) { |
| if (!BluetoothUuid.isUuidPresent(mAdapterService.getRemoteUuids(device), |
| BluetoothUuid.AudioSink)) { |
| continue; |
| } |
| int connectionState = BluetoothProfile.STATE_DISCONNECTED; |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| connectionState = sm.getConnectionState(); |
| } |
| for (int i = 0; i < states.length; i++) { |
| if (connectionState == states[i]) { |
| devices.add(device); |
| } |
| } |
| } |
| 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 (A2dpStateMachine sm : mStateMachines.values()) { |
| devices.add(sm.getDevice()); |
| } |
| return devices; |
| } |
| } |
| |
| public int getConnectionState(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| synchronized (mStateMachines) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return sm.getConnectionState(); |
| } |
| } |
| |
| private void removeActiveDevice(boolean forceStopPlayingAudio) { |
| BluetoothDevice previousActiveDevice = mActiveDevice; |
| synchronized (mStateMachines) { |
| // Clear the active device |
| mActiveDevice = null; |
| // This needs to happen before we inform the audio manager that the device |
| // disconnected. Please see comment in broadcastActiveDevice() for why. |
| broadcastActiveDevice(null); |
| |
| if (previousActiveDevice == null) { |
| return; |
| } |
| |
| // Make sure the Audio Manager knows the previous Active device is disconnected. |
| // However, if A2DP is still connected and not forcing stop audio for that remote |
| // device, the user has explicitly switched the output to the local device and music |
| // should continue playing. Otherwise, the remote device has been indeed disconnected |
| // and audio should be suspended before switching the output to the local device. |
| boolean suppressNoisyIntent = !forceStopPlayingAudio |
| && (getConnectionState(previousActiveDevice) |
| == BluetoothProfile.STATE_CONNECTED); |
| Log.i(TAG, "removeActiveDevice: suppressNoisyIntent=" + suppressNoisyIntent); |
| mAudioManager.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent( |
| previousActiveDevice, BluetoothProfile.STATE_DISCONNECTED, |
| BluetoothProfile.A2DP, suppressNoisyIntent, -1); |
| // Make sure the Active device in native layer is set to null and audio is off |
| if (!mA2dpNativeInterface.setActiveDevice(null)) { |
| Log.w(TAG, "setActiveDevice(null): Cannot remove active device in native " |
| + "layer"); |
| } |
| } |
| } |
| |
| /** |
| * Set the active device. |
| * |
| * @param device the active device |
| * @return true on success, otherwise false |
| */ |
| public boolean setActiveDevice(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH ADMIN permission"); |
| synchronized (mStateMachines) { |
| BluetoothDevice previousActiveDevice = mActiveDevice; |
| if (DBG) { |
| Log.d(TAG, "setActiveDevice(" + device + "): previous is " + previousActiveDevice); |
| } |
| |
| if (previousActiveDevice != null && AvrcpTargetService.get() != null) { |
| AvrcpTargetService.get().storeVolumeForDevice(previousActiveDevice); |
| } |
| |
| if (device == null) { |
| // Remove active device and continue playing audio only if necessary. |
| removeActiveDevice(false); |
| return true; |
| } |
| |
| BluetoothCodecStatus codecStatus = null; |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| Log.e(TAG, "setActiveDevice(" + device + "): Cannot set as active: " |
| + "no state machine"); |
| return false; |
| } |
| if (sm.getConnectionState() != BluetoothProfile.STATE_CONNECTED) { |
| Log.e(TAG, "setActiveDevice(" + device + "): Cannot set as active: " |
| + "device is not connected"); |
| return false; |
| } |
| if (!mA2dpNativeInterface.setActiveDevice(device)) { |
| Log.e(TAG, "setActiveDevice(" + device + "): Cannot set as active in native layer"); |
| return false; |
| } |
| codecStatus = sm.getCodecStatus(); |
| |
| boolean deviceChanged = !Objects.equals(device, mActiveDevice); |
| mActiveDevice = device; |
| // This needs to happen before we inform the audio manager that the device |
| // disconnected. Please see comment in broadcastActiveDevice() for why. |
| broadcastActiveDevice(mActiveDevice); |
| if (deviceChanged) { |
| // Send an intent with the active device codec config |
| if (codecStatus != null) { |
| broadcastCodecConfig(mActiveDevice, codecStatus); |
| } |
| // Make sure the Audio Manager knows the previous Active device is disconnected, |
| // and the new Active device is connected. |
| // Also, mute and unmute the output during the switch to avoid audio glitches. |
| boolean wasMuted = false; |
| if (previousActiveDevice != null) { |
| if (!mAudioManager.isStreamMute(AudioManager.STREAM_MUSIC)) { |
| mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, |
| AudioManager.ADJUST_MUTE, 0); |
| wasMuted = true; |
| } |
| mAudioManager.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent( |
| previousActiveDevice, BluetoothProfile.STATE_DISCONNECTED, |
| BluetoothProfile.A2DP, true, -1); |
| } |
| |
| int rememberedVolume = -1; |
| if (AvrcpTargetService.get() != null) { |
| AvrcpTargetService.get().volumeDeviceSwitched(mActiveDevice); |
| |
| rememberedVolume = AvrcpTargetService.get() |
| .getRememberedVolumeForDevice(mActiveDevice); |
| } |
| |
| mAudioManager.setBluetoothA2dpDeviceConnectionStateSuppressNoisyIntent( |
| mActiveDevice, BluetoothProfile.STATE_CONNECTED, BluetoothProfile.A2DP, |
| true, rememberedVolume); |
| |
| // Inform the Audio Service about the codec configuration |
| // change, so the Audio Service can reset accordingly the audio |
| // feeding parameters in the Audio HAL to the Bluetooth stack. |
| mAudioManager.handleBluetoothA2dpDeviceConfigChange(mActiveDevice); |
| if (wasMuted) { |
| mAudioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, |
| AudioManager.ADJUST_UNMUTE, 0); |
| } |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Get the active device. |
| * |
| * @return the active device or null if no device is active |
| */ |
| public BluetoothDevice getActiveDevice() { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| synchronized (mStateMachines) { |
| return mActiveDevice; |
| } |
| } |
| |
| private boolean isActiveDevice(BluetoothDevice device) { |
| synchronized (mStateMachines) { |
| return (device != null) && Objects.equals(device, mActiveDevice); |
| } |
| } |
| |
| public boolean setPriority(BluetoothDevice device, int priority) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| Settings.Global.putInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()), priority); |
| if (DBG) { |
| Log.d(TAG, "Saved priority " + device + " = " + priority); |
| } |
| return true; |
| } |
| |
| public int getPriority(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| int priority = Settings.Global.getInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpSinkPriorityKey(device.getAddress()), |
| BluetoothProfile.PRIORITY_UNDEFINED); |
| return priority; |
| } |
| |
| public boolean isAvrcpAbsoluteVolumeSupported() { |
| // TODO (apanicke): Add a hook here for the AvrcpTargetService. |
| return false; |
| } |
| |
| |
| public void setAvrcpAbsoluteVolume(int volume) { |
| // TODO (apanicke): Instead of using A2DP as a middleman for volume changes, add a binder |
| // service to the new AVRCP Profile and have the audio manager use that instead. |
| if (AvrcpTargetService.get() != null) { |
| AvrcpTargetService.get().sendVolumeChanged(volume); |
| return; |
| } |
| } |
| |
| boolean isA2dpPlaying(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| if (DBG) { |
| Log.d(TAG, "isA2dpPlaying(" + device + ")"); |
| } |
| synchronized (mStateMachines) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return false; |
| } |
| return sm.isPlaying(); |
| } |
| } |
| |
| /** |
| * Gets the current codec status (configuration and capability). |
| * |
| * @param device the remote Bluetooth device. If null, use the currect |
| * active A2DP 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 + ")"); |
| } |
| synchronized (mStateMachines) { |
| if (device == null) { |
| device = mActiveDevice; |
| } |
| if (device == null) { |
| return null; |
| } |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| return sm.getCodecStatus(); |
| } |
| return null; |
| } |
| } |
| |
| /** |
| * Sets the codec configuration preference. |
| * |
| * @param device the remote Bluetooth device. If null, use the currect |
| * active A2DP Bluetooth device. |
| * @param codecConfig the codec configuration preference |
| * @hide |
| */ |
| public void setCodecConfigPreference(BluetoothDevice device, |
| BluetoothCodecConfig codecConfig) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| if (DBG) { |
| Log.d(TAG, "setCodecConfigPreference(" + device + "): " |
| + Objects.toString(codecConfig)); |
| } |
| if (device == null) { |
| device = mActiveDevice; |
| } |
| if (device == null) { |
| Log.e(TAG, "Cannot set codec config preference: no active A2DP device"); |
| return; |
| } |
| mA2dpCodecConfig.setCodecConfigPreference(device, codecConfig); |
| } |
| |
| /** |
| * Enables the optional codecs. |
| * |
| * @param device the remote Bluetooth device. If null, use the currect |
| * active A2DP Bluetooth device. |
| * @hide |
| */ |
| public void enableOptionalCodecs(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| if (DBG) { |
| Log.d(TAG, "enableOptionalCodecs(" + device + ")"); |
| } |
| if (device == null) { |
| device = mActiveDevice; |
| } |
| if (device == null) { |
| Log.e(TAG, "Cannot enable optional codecs: no active A2DP device"); |
| return; |
| } |
| mA2dpCodecConfig.enableOptionalCodecs(device); |
| } |
| |
| /** |
| * Disables the optional codecs. |
| * |
| * @param device the remote Bluetooth device. If null, use the currect |
| * active A2DP Bluetooth device. |
| * @hide |
| */ |
| public void disableOptionalCodecs(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_PERM, "Need BLUETOOTH permission"); |
| if (DBG) { |
| Log.d(TAG, "disableOptionalCodecs(" + device + ")"); |
| } |
| if (device == null) { |
| device = mActiveDevice; |
| } |
| if (device == null) { |
| Log.e(TAG, "Cannot disable optional codecs: no active A2DP device"); |
| return; |
| } |
| mA2dpCodecConfig.disableOptionalCodecs(device); |
| } |
| |
| public int getSupportsOptionalCodecs(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| int support = Settings.Global.getInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpSupportsOptionalCodecsKey(device.getAddress()), |
| BluetoothA2dp.OPTIONAL_CODECS_SUPPORT_UNKNOWN); |
| return support; |
| } |
| |
| public void setSupportsOptionalCodecs(BluetoothDevice device, boolean doesSupport) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| int value = doesSupport ? BluetoothA2dp.OPTIONAL_CODECS_SUPPORTED |
| : BluetoothA2dp.OPTIONAL_CODECS_NOT_SUPPORTED; |
| Settings.Global.putInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpSupportsOptionalCodecsKey(device.getAddress()), |
| value); |
| } |
| |
| public int getOptionalCodecsEnabled(BluetoothDevice device) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| return Settings.Global.getInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpOptionalCodecsEnabledKey(device.getAddress()), |
| BluetoothA2dp.OPTIONAL_CODECS_PREF_UNKNOWN); |
| } |
| |
| public void setOptionalCodecsEnabled(BluetoothDevice device, int value) { |
| enforceCallingOrSelfPermission(BLUETOOTH_ADMIN_PERM, "Need BLUETOOTH_ADMIN permission"); |
| if (value != BluetoothA2dp.OPTIONAL_CODECS_PREF_UNKNOWN |
| && value != BluetoothA2dp.OPTIONAL_CODECS_PREF_DISABLED |
| && value != BluetoothA2dp.OPTIONAL_CODECS_PREF_ENABLED) { |
| Log.w(TAG, "Unexpected value passed to setOptionalCodecsEnabled:" + value); |
| return; |
| } |
| Settings.Global.putInt(getContentResolver(), |
| Settings.Global.getBluetoothA2dpOptionalCodecsEnabledKey(device.getAddress()), |
| value); |
| } |
| |
| // Handle messages from native (JNI) to Java |
| void messageFromNative(A2dpStackEvent stackEvent) { |
| Objects.requireNonNull(stackEvent.device, |
| "Device should never be null, event: " + stackEvent); |
| synchronized (mStateMachines) { |
| BluetoothDevice device = stackEvent.device; |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| if (stackEvent.type == A2dpStackEvent.EVENT_TYPE_CONNECTION_STATE_CHANGED) { |
| switch (stackEvent.valueInt) { |
| case A2dpStackEvent.CONNECTION_STATE_CONNECTED: |
| case A2dpStackEvent.CONNECTION_STATE_CONNECTING: |
| // Create a new state machine only when connecting to a device |
| if (!connectionAllowedCheckMaxDevices(device)) { |
| Log.e(TAG, "Cannot connect to " + device |
| + " : too many connected devices"); |
| return; |
| } |
| sm = getOrCreateStateMachine(device); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| if (sm == null) { |
| Log.e(TAG, "Cannot process stack event: no state machine: " + stackEvent); |
| return; |
| } |
| sm.sendMessage(A2dpStateMachine.STACK_EVENT, stackEvent); |
| } |
| } |
| |
| /** |
| * The codec configuration for a device has been updated. |
| * |
| * @param device the remote device |
| * @param codecStatus the new codec status |
| * @param sameAudioFeedingParameters if true the audio feeding parameters |
| * haven't been changed |
| */ |
| void codecConfigUpdated(BluetoothDevice device, BluetoothCodecStatus codecStatus, |
| boolean sameAudioFeedingParameters) { |
| broadcastCodecConfig(device, codecStatus); |
| |
| // Inform the Audio Service about the codec configuration change, |
| // so the Audio Service can reset accordingly the audio feeding |
| // parameters in the Audio HAL to the Bluetooth stack. |
| if (isActiveDevice(device) && !sameAudioFeedingParameters) { |
| mAudioManager.handleBluetoothA2dpDeviceConfigChange(device); |
| } |
| } |
| |
| private A2dpStateMachine getOrCreateStateMachine(BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "getOrCreateStateMachine failed: device cannot be null"); |
| return null; |
| } |
| synchronized (mStateMachines) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm != null) { |
| return sm; |
| } |
| // Limit the maximum number of state machines to avoid DoS attack |
| if (mStateMachines.size() >= MAX_A2DP_STATE_MACHINES) { |
| Log.e(TAG, "Maximum number of A2DP state machines reached: " |
| + MAX_A2DP_STATE_MACHINES); |
| return null; |
| } |
| if (DBG) { |
| Log.d(TAG, "Creating a new state machine for " + device); |
| } |
| sm = A2dpStateMachine.make(device, this, mA2dpNativeInterface, |
| mStateMachinesThread.getLooper()); |
| mStateMachines.put(device, sm); |
| return sm; |
| } |
| } |
| |
| private void broadcastActiveDevice(BluetoothDevice device) { |
| if (DBG) { |
| Log.d(TAG, "broadcastActiveDevice(" + device + ")"); |
| } |
| |
| Intent intent = new Intent(BluetoothA2dp.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); |
| } |
| |
| private void broadcastCodecConfig(BluetoothDevice device, BluetoothCodecStatus codecStatus) { |
| if (DBG) { |
| Log.d(TAG, "broadcastCodecConfig(" + device + "): " + codecStatus); |
| } |
| Intent intent = new Intent(BluetoothA2dp.ACTION_CODEC_CONFIG_CHANGED); |
| intent.putExtra(BluetoothCodecStatus.EXTRA_CODEC_STATUS, codecStatus); |
| intent.putExtra(BluetoothDevice.EXTRA_DEVICE, device); |
| intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT |
| | Intent.FLAG_RECEIVER_INCLUDE_BACKGROUND); |
| sendBroadcast(intent, A2dpService.BLUETOOTH_PERM); |
| } |
| |
| 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) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return; |
| } |
| if (sm.getConnectionState() != BluetoothProfile.STATE_DISCONNECTED) { |
| return; |
| } |
| removeStateMachine(device); |
| } |
| } |
| |
| private void removeStateMachine(BluetoothDevice device) { |
| synchronized (mStateMachines) { |
| A2dpStateMachine 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 void updateOptionalCodecsSupport(BluetoothDevice device) { |
| int previousSupport = getSupportsOptionalCodecs(device); |
| boolean supportsOptional = false; |
| |
| synchronized (mStateMachines) { |
| A2dpStateMachine sm = mStateMachines.get(device); |
| if (sm == null) { |
| return; |
| } |
| BluetoothCodecStatus codecStatus = sm.getCodecStatus(); |
| if (codecStatus != null) { |
| for (BluetoothCodecConfig config : codecStatus.getCodecsSelectableCapabilities()) { |
| if (!config.isMandatoryCodec()) { |
| supportsOptional = true; |
| break; |
| } |
| } |
| } |
| } |
| if (previousSupport == BluetoothA2dp.OPTIONAL_CODECS_SUPPORT_UNKNOWN |
| || supportsOptional != (previousSupport |
| == BluetoothA2dp.OPTIONAL_CODECS_SUPPORTED)) { |
| setSupportsOptionalCodecs(device, supportsOptional); |
| } |
| if (supportsOptional) { |
| int enabled = getOptionalCodecsEnabled(device); |
| if (enabled == BluetoothA2dp.OPTIONAL_CODECS_PREF_ENABLED) { |
| enableOptionalCodecs(device); |
| } else if (enabled == BluetoothA2dp.OPTIONAL_CODECS_PREF_DISABLED) { |
| disableOptionalCodecs(device); |
| } |
| } |
| } |
| |
| private void connectionStateChanged(BluetoothDevice device, int fromState, int toState) { |
| if ((device == null) || (fromState == toState)) { |
| return; |
| } |
| synchronized (mStateMachines) { |
| if (toState == BluetoothProfile.STATE_CONNECTED) { |
| // Each time a device connects, we want to re-check if it supports optional |
| // codecs (perhaps it's had a firmware update, etc.) and save that state if |
| // it differs from what we had saved before. |
| updateOptionalCodecsSupport(device); |
| MetricsLogger.logProfileConnectionEvent(BluetoothMetricsProto.ProfileId.A2DP); |
| } |
| // Set the active device if only one connected device is supported and it was connected |
| if (toState == BluetoothProfile.STATE_CONNECTED && (mMaxConnectedAudioDevices == 1)) { |
| setActiveDevice(device); |
| } |
| // Check if the active device is not connected anymore |
| if (isActiveDevice(device) && (fromState == BluetoothProfile.STATE_CONNECTED)) { |
| setActiveDevice(null); |
| } |
| // 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) { |
| removeStateMachine(device); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Receiver for processing device connection state changes. |
| * |
| * <ul> |
| * <li> Update codec support per device when device is (re)connected |
| * <li> Delete the state machine instance if the device is disconnected and unbond |
| * </ul> |
| */ |
| private class ConnectionStateChangedReceiver extends BroadcastReceiver { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| if (!BluetoothA2dp.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 BluetoothA2dpBinder extends IBluetoothA2dp.Stub |
| implements IProfileServiceBinder { |
| private A2dpService mService; |
| |
| private A2dpService getService() { |
| if (!Utils.checkCaller()) { |
| Log.w(TAG, "A2DP call not allowed for non-active user"); |
| return null; |
| } |
| |
| if (mService != null && mService.isAvailable()) { |
| return mService; |
| } |
| return null; |
| } |
| |
| BluetoothA2dpBinder(A2dpService svc) { |
| mService = svc; |
| } |
| |
| @Override |
| public void cleanup() { |
| mService = null; |
| } |
| |
| @Override |
| public boolean connect(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.connect(device); |
| } |
| |
| @Override |
| public boolean disconnect(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.disconnect(device); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getConnectedDevices() { |
| A2dpService service = getService(); |
| if (service == null) { |
| return new ArrayList<>(0); |
| } |
| return service.getConnectedDevices(); |
| } |
| |
| @Override |
| public List<BluetoothDevice> getDevicesMatchingConnectionStates(int[] states) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return new ArrayList<>(0); |
| } |
| return service.getDevicesMatchingConnectionStates(states); |
| } |
| |
| @Override |
| public int getConnectionState(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return BluetoothProfile.STATE_DISCONNECTED; |
| } |
| return service.getConnectionState(device); |
| } |
| |
| @Override |
| public boolean setActiveDevice(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.setActiveDevice(device); |
| } |
| |
| @Override |
| public BluetoothDevice getActiveDevice() { |
| A2dpService service = getService(); |
| if (service == null) { |
| return null; |
| } |
| return service.getActiveDevice(); |
| } |
| |
| @Override |
| public boolean setPriority(BluetoothDevice device, int priority) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.setPriority(device, priority); |
| } |
| |
| @Override |
| public int getPriority(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return BluetoothProfile.PRIORITY_UNDEFINED; |
| } |
| return service.getPriority(device); |
| } |
| |
| @Override |
| public boolean isAvrcpAbsoluteVolumeSupported() { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.isAvrcpAbsoluteVolumeSupported(); |
| } |
| |
| @Override |
| public void setAvrcpAbsoluteVolume(int volume) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return; |
| } |
| service.setAvrcpAbsoluteVolume(volume); |
| } |
| |
| @Override |
| public boolean isA2dpPlaying(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return false; |
| } |
| return service.isA2dpPlaying(device); |
| } |
| |
| @Override |
| public BluetoothCodecStatus getCodecStatus(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return null; |
| } |
| return service.getCodecStatus(device); |
| } |
| |
| @Override |
| public void setCodecConfigPreference(BluetoothDevice device, |
| BluetoothCodecConfig codecConfig) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return; |
| } |
| service.setCodecConfigPreference(device, codecConfig); |
| } |
| |
| @Override |
| public void enableOptionalCodecs(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return; |
| } |
| service.enableOptionalCodecs(device); |
| } |
| |
| @Override |
| public void disableOptionalCodecs(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return; |
| } |
| service.disableOptionalCodecs(device); |
| } |
| |
| public int supportsOptionalCodecs(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return BluetoothA2dp.OPTIONAL_CODECS_SUPPORT_UNKNOWN; |
| } |
| return service.getSupportsOptionalCodecs(device); |
| } |
| |
| public int getOptionalCodecsEnabled(BluetoothDevice device) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return BluetoothA2dp.OPTIONAL_CODECS_PREF_UNKNOWN; |
| } |
| return service.getOptionalCodecsEnabled(device); |
| } |
| |
| public void setOptionalCodecsEnabled(BluetoothDevice device, int value) { |
| A2dpService service = getService(); |
| if (service == null) { |
| return; |
| } |
| service.setOptionalCodecsEnabled(device, value); |
| } |
| } |
| |
| @Override |
| public void dump(StringBuilder sb) { |
| super.dump(sb); |
| ProfileService.println(sb, "mActiveDevice: " + mActiveDevice); |
| for (A2dpStateMachine sm : mStateMachines.values()) { |
| sm.dump(sb); |
| } |
| } |
| } |
