| /* |
| * Copyright (C) 2011 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.settingslib.bluetooth; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.bluetooth.BluetoothDevice; |
| import android.bluetooth.BluetoothProfile; |
| import android.bluetooth.le.BluetoothLeScanner; |
| import android.content.Context; |
| import android.os.ParcelUuid; |
| import android.util.Log; |
| |
| import java.util.Set; |
| |
| /** |
| * LocalBluetoothAdapter provides an interface between the Settings app |
| * and the functionality of the local {@link BluetoothAdapter}, specifically |
| * those related to state transitions of the adapter itself. |
| * |
| * <p>Connection and bonding state changes affecting specific devices |
| * are handled by {@link CachedBluetoothDeviceManager}, |
| * {@link BluetoothEventManager}, and {@link LocalBluetoothProfileManager}. |
| */ |
| public class LocalBluetoothAdapter { |
| private static final String TAG = "LocalBluetoothAdapter"; |
| |
| /** This class does not allow direct access to the BluetoothAdapter. */ |
| private final BluetoothAdapter mAdapter; |
| |
| private LocalBluetoothProfileManager mProfileManager; |
| |
| private static LocalBluetoothAdapter sInstance; |
| |
| private int mState = BluetoothAdapter.ERROR; |
| |
| private static final int SCAN_EXPIRATION_MS = 5 * 60 * 1000; // 5 mins |
| |
| private long mLastScan; |
| |
| private LocalBluetoothAdapter(BluetoothAdapter adapter) { |
| mAdapter = adapter; |
| } |
| |
| void setProfileManager(LocalBluetoothProfileManager manager) { |
| mProfileManager = manager; |
| } |
| |
| /** |
| * Get the singleton instance of the LocalBluetoothAdapter. If this device |
| * doesn't support Bluetooth, then null will be returned. Callers must be |
| * prepared to handle a null return value. |
| * @return the LocalBluetoothAdapter object, or null if not supported |
| */ |
| static synchronized LocalBluetoothAdapter getInstance() { |
| if (sInstance == null) { |
| BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter(); |
| if (adapter != null) { |
| sInstance = new LocalBluetoothAdapter(adapter); |
| } |
| } |
| |
| return sInstance; |
| } |
| |
| // Pass-through BluetoothAdapter methods that we can intercept if necessary |
| |
| public void cancelDiscovery() { |
| mAdapter.cancelDiscovery(); |
| } |
| |
| public boolean enable() { |
| return mAdapter.enable(); |
| } |
| |
| public boolean disable() { |
| return mAdapter.disable(); |
| } |
| |
| public String getAddress() { |
| return mAdapter.getAddress(); |
| } |
| |
| void getProfileProxy(Context context, |
| BluetoothProfile.ServiceListener listener, int profile) { |
| mAdapter.getProfileProxy(context, listener, profile); |
| } |
| |
| public Set<BluetoothDevice> getBondedDevices() { |
| return mAdapter.getBondedDevices(); |
| } |
| |
| public String getName() { |
| return mAdapter.getName(); |
| } |
| |
| public int getScanMode() { |
| return mAdapter.getScanMode(); |
| } |
| |
| public BluetoothLeScanner getBluetoothLeScanner() { |
| return mAdapter.getBluetoothLeScanner(); |
| } |
| |
| public int getState() { |
| return mAdapter.getState(); |
| } |
| |
| public ParcelUuid[] getUuids() { |
| return mAdapter.getUuids(); |
| } |
| |
| public boolean isDiscovering() { |
| return mAdapter.isDiscovering(); |
| } |
| |
| public boolean isEnabled() { |
| return mAdapter.isEnabled(); |
| } |
| |
| public int getConnectionState() { |
| return mAdapter.getConnectionState(); |
| } |
| |
| public void setDiscoverableTimeout(int timeout) { |
| mAdapter.setDiscoverableTimeout(timeout); |
| } |
| |
| public long getDiscoveryEndMillis() { |
| return mAdapter.getDiscoveryEndMillis(); |
| } |
| |
| public void setName(String name) { |
| mAdapter.setName(name); |
| } |
| |
| public void setScanMode(int mode) { |
| mAdapter.setScanMode(mode); |
| } |
| |
| public boolean setScanMode(int mode, int duration) { |
| return mAdapter.setScanMode(mode, duration); |
| } |
| |
| public void startScanning(boolean force) { |
| // Only start if we're not already scanning |
| if (!mAdapter.isDiscovering()) { |
| if (!force) { |
| // Don't scan more than frequently than SCAN_EXPIRATION_MS, |
| // unless forced |
| if (mLastScan + SCAN_EXPIRATION_MS > System.currentTimeMillis()) { |
| return; |
| } |
| |
| // If we are playing music, don't scan unless forced. |
| A2dpProfile a2dp = mProfileManager.getA2dpProfile(); |
| if (a2dp != null && a2dp.isA2dpPlaying()) { |
| return; |
| } |
| A2dpSinkProfile a2dpSink = mProfileManager.getA2dpSinkProfile(); |
| if ((a2dpSink != null) && (a2dpSink.isA2dpPlaying())){ |
| return; |
| } |
| } |
| |
| if (mAdapter.startDiscovery()) { |
| mLastScan = System.currentTimeMillis(); |
| } |
| } |
| } |
| |
| public void stopScanning() { |
| if (mAdapter.isDiscovering()) { |
| mAdapter.cancelDiscovery(); |
| } |
| } |
| |
| public synchronized int getBluetoothState() { |
| // Always sync state, in case it changed while paused |
| syncBluetoothState(); |
| return mState; |
| } |
| |
| synchronized void setBluetoothStateInt(int state) { |
| mState = state; |
| |
| if (state == BluetoothAdapter.STATE_ON) { |
| // if mProfileManager hasn't been constructed yet, it will |
| // get the adapter UUIDs in its constructor when it is. |
| if (mProfileManager != null) { |
| mProfileManager.setBluetoothStateOn(); |
| } |
| } |
| } |
| |
| // Returns true if the state changed; false otherwise. |
| boolean syncBluetoothState() { |
| int currentState = mAdapter.getState(); |
| if (currentState != mState) { |
| setBluetoothStateInt(mAdapter.getState()); |
| return true; |
| } |
| return false; |
| } |
| |
| public boolean setBluetoothEnabled(boolean enabled) { |
| boolean success = enabled |
| ? mAdapter.enable() |
| : mAdapter.disable(); |
| |
| if (success) { |
| setBluetoothStateInt(enabled |
| ? BluetoothAdapter.STATE_TURNING_ON |
| : BluetoothAdapter.STATE_TURNING_OFF); |
| } else { |
| if (Utils.V) { |
| Log.v(TAG, "setBluetoothEnabled call, manager didn't return " + |
| "success for enabled: " + enabled); |
| } |
| |
| syncBluetoothState(); |
| } |
| return success; |
| } |
| |
| public BluetoothDevice getRemoteDevice(String address) { |
| return mAdapter.getRemoteDevice(address); |
| } |
| |
| public int getMaxConnectedAudioDevices() { |
| return mAdapter.getMaxConnectedAudioDevices(); |
| } |
| } |