| /* |
| * Copyright (C) 2017 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.car; |
| |
| import android.bluetooth.BluetoothA2dpSink; |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothHeadsetClient; |
| import android.bluetooth.BluetoothMapClient; |
| import android.bluetooth.BluetoothPan; |
| import android.bluetooth.BluetoothPbapClient; |
| import android.bluetooth.BluetoothProfile; |
| import android.car.ICarBluetoothUserService; |
| import android.util.Log; |
| import android.util.SparseBooleanArray; |
| |
| import com.android.internal.util.Preconditions; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.locks.Condition; |
| import java.util.concurrent.locks.ReentrantLock; |
| |
| public class CarBluetoothUserService extends ICarBluetoothUserService.Stub { |
| private static final String TAG = "CarBluetoothUserService"; |
| private static final boolean DBG = Log.isLoggable(TAG, Log.DEBUG); |
| private final PerUserCarService mService; |
| private final BluetoothAdapter mBluetoothAdapter; |
| |
| // Profiles we support |
| private static final List<Integer> sProfilesToConnect = Arrays.asList( |
| BluetoothProfile.HEADSET_CLIENT, |
| BluetoothProfile.PBAP_CLIENT, |
| BluetoothProfile.A2DP_SINK, |
| BluetoothProfile.MAP_CLIENT, |
| BluetoothProfile.PAN |
| ); |
| |
| // Profile Proxies Objects to pair with above list. Access to these proxy objects will all be |
| // guarded by the below mBluetoothProxyLock |
| private BluetoothA2dpSink mBluetoothA2dpSink = null; |
| private BluetoothHeadsetClient mBluetoothHeadsetClient = null; |
| private BluetoothPbapClient mBluetoothPbapClient = null; |
| private BluetoothMapClient mBluetoothMapClient = null; |
| private BluetoothPan mBluetoothPan = null; |
| |
| // Concurrency variables for waitForProxies. Used so we can best effort block with a timeout |
| // while waiting for services to be bound to the proxy objects. |
| private final ReentrantLock mBluetoothProxyLock; |
| private final Condition mConditionAllProxiesConnected; |
| private SparseBooleanArray mBluetoothProfileStatus; |
| private int mConnectedProfiles; |
| private static final int PROXY_OPERATION_TIMEOUT_MS = 8000; |
| |
| /** |
| * Create a CarBluetoothUserService instance. |
| * |
| * @param serice - A reference to a PerUserCarService, so we can use its context to receive |
| * updates as a particular user. |
| */ |
| public CarBluetoothUserService(PerUserCarService service) { |
| mService = service; |
| mConnectedProfiles = 0; |
| mBluetoothProfileStatus = new SparseBooleanArray(); |
| for (int profile : sProfilesToConnect) { |
| mBluetoothProfileStatus.put(profile, false); |
| } |
| mBluetoothProxyLock = new ReentrantLock(); |
| mConditionAllProxiesConnected = mBluetoothProxyLock.newCondition(); |
| mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter(); |
| Preconditions.checkNotNull(mBluetoothAdapter, "Bluetooth adapter cannot be null"); |
| } |
| |
| /** |
| * Setup connections to the profile proxy objects that talk to the Bluetooth profile services. |
| * |
| * Proxy references are held by the Bluetooth Framework on our behalf. We will be notified each |
| * time the underlying service connects for each proxy we create. Notifications stop when we |
| * close the proxy. As such, each time this is called we clean up any existing proxies before |
| * creating new ones. |
| */ |
| @Override |
| public void setupBluetoothConnectionProxies() { |
| logd("Initiate connections to profile proxies"); |
| |
| // Clear existing proxy objects |
| closeBluetoothConnectionProxies(); |
| |
| // Create proxy for each supported profile. Objects arrive later in the profile listener. |
| // Operations on the proxies expect them to be connected. Functions below should call |
| // waitForProxies() to best effort wait for them to be up if Bluetooth is enabled. |
| for (int profile : sProfilesToConnect) { |
| logd("Creating proxy for " + Utils.getProfileName(profile)); |
| mBluetoothAdapter.getProfileProxy(mService.getApplicationContext(), |
| mProfileListener, profile); |
| } |
| } |
| |
| /** |
| * Close connections to the profile proxy objects |
| */ |
| @Override |
| public void closeBluetoothConnectionProxies() { |
| logd("Clean up profile proxy objects"); |
| mBluetoothProxyLock.lock(); |
| try { |
| mBluetoothAdapter.closeProfileProxy(BluetoothProfile.A2DP_SINK, mBluetoothA2dpSink); |
| mBluetoothA2dpSink = null; |
| mBluetoothProfileStatus.put(BluetoothProfile.A2DP_SINK, false); |
| |
| mBluetoothAdapter.closeProfileProxy(BluetoothProfile.HEADSET_CLIENT, |
| mBluetoothHeadsetClient); |
| mBluetoothHeadsetClient = null; |
| mBluetoothProfileStatus.put(BluetoothProfile.HEADSET_CLIENT, false); |
| |
| mBluetoothAdapter.closeProfileProxy(BluetoothProfile.PBAP_CLIENT, mBluetoothPbapClient); |
| mBluetoothPbapClient = null; |
| mBluetoothProfileStatus.put(BluetoothProfile.PBAP_CLIENT, false); |
| |
| mBluetoothAdapter.closeProfileProxy(BluetoothProfile.MAP_CLIENT, mBluetoothMapClient); |
| mBluetoothMapClient = null; |
| mBluetoothProfileStatus.put(BluetoothProfile.MAP_CLIENT, false); |
| |
| mBluetoothAdapter.closeProfileProxy(BluetoothProfile.PAN, mBluetoothPan); |
| mBluetoothPan = null; |
| mBluetoothProfileStatus.put(BluetoothProfile.PAN, false); |
| |
| mConnectedProfiles = 0; |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| } |
| |
| /** |
| * Listen for and collect Bluetooth profile proxy connections and disconnections. |
| */ |
| private BluetoothProfile.ServiceListener mProfileListener = |
| new BluetoothProfile.ServiceListener() { |
| public void onServiceConnected(int profile, BluetoothProfile proxy) { |
| logd("onServiceConnected profile: " + Utils.getProfileName(profile)); |
| |
| // Grab the profile proxy object and update the status book keeping in one step so the |
| // book keeping and proxy objects never disagree |
| mBluetoothProxyLock.lock(); |
| try { |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| mBluetoothA2dpSink = (BluetoothA2dpSink) proxy; |
| break; |
| case BluetoothProfile.HEADSET_CLIENT: |
| mBluetoothHeadsetClient = (BluetoothHeadsetClient) proxy; |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| mBluetoothPbapClient = (BluetoothPbapClient) proxy; |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| mBluetoothMapClient = (BluetoothMapClient) proxy; |
| break; |
| case BluetoothProfile.PAN: |
| mBluetoothPan = (BluetoothPan) proxy; |
| break; |
| default: |
| logd("Unhandled profile connected: " + Utils.getProfileName(profile)); |
| break; |
| } |
| |
| if (!mBluetoothProfileStatus.get(profile, false)) { |
| mBluetoothProfileStatus.put(profile, true); |
| mConnectedProfiles++; |
| if (mConnectedProfiles == sProfilesToConnect.size()) { |
| logd("All profiles have connected"); |
| mConditionAllProxiesConnected.signal(); |
| } |
| } else { |
| Log.w(TAG, "Received duplicate service connection event for: " |
| + Utils.getProfileName(profile)); |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| } |
| |
| public void onServiceDisconnected(int profile) { |
| logd("onServiceDisconnected profile: " + Utils.getProfileName(profile)); |
| mBluetoothProxyLock.lock(); |
| try { |
| if (mBluetoothProfileStatus.get(profile, false)) { |
| mBluetoothProfileStatus.put(profile, false); |
| mConnectedProfiles--; |
| } else { |
| Log.w(TAG, "Received duplicate service disconnection event for: " |
| + Utils.getProfileName(profile)); |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| } |
| }; |
| |
| /** |
| * Check if a proxy is available for the given profile to talk to the Profile's bluetooth |
| * service. |
| * |
| * @param profile - Bluetooth profile to check for |
| * @return - true if proxy available, false if not. |
| */ |
| @Override |
| public boolean isBluetoothConnectionProxyAvailable(int profile) { |
| if (!mBluetoothAdapter.isEnabled()) return false; |
| boolean proxyConnected = false; |
| mBluetoothProxyLock.lock(); |
| try { |
| proxyConnected = mBluetoothProfileStatus.get(profile, false); |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| return proxyConnected; |
| } |
| |
| /** |
| * Wait for the proxy objects to be up for all profiles, with a timeout. |
| * |
| * @param timeout Amount of time in milliseconds to wait for giving up on the wait operation |
| * @return True if the condition was satisfied within the timeout, False otherwise |
| */ |
| private boolean waitForProxies(int timeout /* ms */) { |
| logd("waitForProxies()"); |
| // If bluetooth isn't on then the operation waiting on proxies was never meant to actually |
| // work regardless if Bluetooth comes on within the timeout period or not. Return false. |
| if (!mBluetoothAdapter.isEnabled()) return false; |
| try { |
| while (mConnectedProfiles != sProfilesToConnect.size()) { |
| if (!mConditionAllProxiesConnected.await( |
| timeout, TimeUnit.MILLISECONDS)) { |
| Log.e(TAG, "Timeout while waiting for proxies, Connected: " + mConnectedProfiles |
| + "/" + sProfilesToConnect.size()); |
| return false; |
| } |
| } |
| } catch (InterruptedException e) { |
| Log.w(TAG, "waitForProxies: interrupted", e); |
| return false; |
| } |
| return true; |
| } |
| |
| /** |
| * Connect a given remote device on a specific Bluetooth profile |
| * |
| * @param profile BluetoothProfile.* based profile ID |
| * @param device The device you wish to connect |
| */ |
| @Override |
| public boolean bluetoothConnectToProfile(int profile, BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "Cannot connect to profile on null device"); |
| return false; |
| } |
| logd("Trying to connect to " + device.getName() + " (" + device.getAddress() + ") Profile: " |
| + Utils.getProfileName(profile)); |
| mBluetoothProxyLock.lock(); |
| try { |
| if (!isBluetoothConnectionProxyAvailable(profile) |
| && !waitForProxies(PROXY_OPERATION_TIMEOUT_MS)) { |
| Log.e(TAG, "Cannot connect to Profile. Proxy Unavailable"); |
| return false; |
| } |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| return mBluetoothA2dpSink.connect(device); |
| case BluetoothProfile.HEADSET_CLIENT: |
| return mBluetoothHeadsetClient.connect(device); |
| case BluetoothProfile.MAP_CLIENT: |
| return mBluetoothMapClient.connect(device); |
| case BluetoothProfile.PBAP_CLIENT: |
| return mBluetoothPbapClient.connect(device); |
| case BluetoothProfile.PAN: |
| return mBluetoothPan.connect(device); |
| default: |
| Log.w(TAG, "Unknown Profile: " + Utils.getProfileName(profile)); |
| break; |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| return false; |
| } |
| |
| /** |
| * Disonnect a given remote device from a specific Bluetooth profile |
| * |
| * @param profile BluetoothProfile.* based profile ID |
| * @param device The device you wish to disconnect |
| */ |
| @Override |
| public boolean bluetoothDisconnectFromProfile(int profile, BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "Cannot disconnect from profile on null device"); |
| return false; |
| } |
| logd("Trying to disconnect from " + device.getName() + " (" + device.getAddress() |
| + ") Profile: " + Utils.getProfileName(profile)); |
| mBluetoothProxyLock.lock(); |
| try { |
| if (!isBluetoothConnectionProxyAvailable(profile) |
| && !waitForProxies(PROXY_OPERATION_TIMEOUT_MS)) { |
| Log.e(TAG, "Cannot disconnect from profile. Proxy Unavailable"); |
| return false; |
| } |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| return mBluetoothA2dpSink.disconnect(device); |
| case BluetoothProfile.HEADSET_CLIENT: |
| return mBluetoothHeadsetClient.disconnect(device); |
| case BluetoothProfile.MAP_CLIENT: |
| return mBluetoothMapClient.disconnect(device); |
| case BluetoothProfile.PBAP_CLIENT: |
| return mBluetoothPbapClient.disconnect(device); |
| case BluetoothProfile.PAN: |
| return mBluetoothPan.disconnect(device); |
| default: |
| Log.w(TAG, "Unknown Profile: " + Utils.getProfileName(profile)); |
| break; |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| return false; |
| } |
| |
| /** |
| * Get the priority of the given Bluetooth profile for the given remote device |
| * |
| * @param profile - Bluetooth profile |
| * @param device - remote Bluetooth device |
| */ |
| @Override |
| public int getProfilePriority(int profile, BluetoothDevice device) { |
| if (device == null) { |
| Log.e(TAG, "Cannot get " + Utils.getProfileName(profile) |
| + " profile priority on null device"); |
| return BluetoothProfile.PRIORITY_UNDEFINED; |
| } |
| int priority; |
| mBluetoothProxyLock.lock(); |
| try { |
| if (!isBluetoothConnectionProxyAvailable(profile) |
| && !waitForProxies(PROXY_OPERATION_TIMEOUT_MS)) { |
| Log.e(TAG, "Cannot get " + Utils.getProfileName(profile) |
| + " profile priority. Proxy Unavailable"); |
| return BluetoothProfile.PRIORITY_UNDEFINED; |
| } |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| priority = mBluetoothA2dpSink.getPriority(device); |
| break; |
| case BluetoothProfile.HEADSET_CLIENT: |
| priority = mBluetoothHeadsetClient.getPriority(device); |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| priority = mBluetoothMapClient.getPriority(device); |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| priority = mBluetoothPbapClient.getPriority(device); |
| break; |
| default: |
| Log.w(TAG, "Unknown Profile: " + Utils.getProfileName(profile)); |
| priority = BluetoothProfile.PRIORITY_UNDEFINED; |
| break; |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| logd(Utils.getProfileName(profile) + " priority for " + device.getName() + " (" |
| + device.getAddress() + ") = " + priority); |
| return priority; |
| } |
| |
| /** |
| * Set the priority of the given Bluetooth profile for the given remote device |
| * |
| * @param profile - Bluetooth profile |
| * @param device - remote Bluetooth device |
| * @param priority - priority to set |
| */ |
| @Override |
| public void setProfilePriority(int profile, BluetoothDevice device, int priority) { |
| if (device == null) { |
| Log.e(TAG, "Cannot set " + Utils.getProfileName(profile) |
| + " profile priority on null device"); |
| return; |
| } |
| logd("Setting " + Utils.getProfileName(profile) + " priority for " + device.getName() + " (" |
| + device.getAddress() + ") to " + priority); |
| mBluetoothProxyLock.lock(); |
| try { |
| if (!isBluetoothConnectionProxyAvailable(profile) |
| && !waitForProxies(PROXY_OPERATION_TIMEOUT_MS)) { |
| Log.e(TAG, "Cannot set " + Utils.getProfileName(profile) |
| + " profile priority. Proxy Unavailable"); |
| return; |
| } |
| switch (profile) { |
| case BluetoothProfile.A2DP_SINK: |
| mBluetoothA2dpSink.setPriority(device, priority); |
| break; |
| case BluetoothProfile.HEADSET_CLIENT: |
| mBluetoothHeadsetClient.setPriority(device, priority); |
| break; |
| case BluetoothProfile.MAP_CLIENT: |
| mBluetoothMapClient.setPriority(device, priority); |
| break; |
| case BluetoothProfile.PBAP_CLIENT: |
| mBluetoothPbapClient.setPriority(device, priority); |
| break; |
| default: |
| Log.w(TAG, "Unknown Profile: " + Utils.getProfileName(profile)); |
| break; |
| } |
| } finally { |
| mBluetoothProxyLock.unlock(); |
| } |
| } |
| |
| /** |
| * Log to debug if debug output is enabled |
| */ |
| private void logd(String msg) { |
| if (DBG) { |
| Log.d(TAG, msg); |
| } |
| } |
| } |