| /* |
| * Copyright (C) 2008 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.server; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.content.pm.PackageManager; |
| import android.os.Handler; |
| import android.os.IVibratorService; |
| import android.os.PowerManager; |
| import android.os.Process; |
| import android.os.RemoteException; |
| import android.os.IBinder; |
| import android.os.Binder; |
| import android.os.SystemClock; |
| import android.os.WorkSource; |
| import android.util.Slog; |
| |
| import java.util.LinkedList; |
| import java.util.ListIterator; |
| |
| public class VibratorService extends IVibratorService.Stub { |
| private static final String TAG = "VibratorService"; |
| |
| private final LinkedList<Vibration> mVibrations; |
| private Vibration mCurrentVibration; |
| private final WorkSource mTmpWorkSource = new WorkSource(); |
| |
| private class Vibration implements IBinder.DeathRecipient { |
| private final IBinder mToken; |
| private final long mTimeout; |
| private final long mStartTime; |
| private final long[] mPattern; |
| private final int mRepeat; |
| private final int mUid; |
| |
| Vibration(IBinder token, long millis, int uid) { |
| this(token, millis, null, 0, uid); |
| } |
| |
| Vibration(IBinder token, long[] pattern, int repeat, int uid) { |
| this(token, 0, pattern, repeat, uid); |
| } |
| |
| private Vibration(IBinder token, long millis, long[] pattern, |
| int repeat, int uid) { |
| mToken = token; |
| mTimeout = millis; |
| mStartTime = SystemClock.uptimeMillis(); |
| mPattern = pattern; |
| mRepeat = repeat; |
| mUid = uid; |
| } |
| |
| public void binderDied() { |
| synchronized (mVibrations) { |
| mVibrations.remove(this); |
| if (this == mCurrentVibration) { |
| doCancelVibrateLocked(); |
| startNextVibrationLocked(); |
| } |
| } |
| } |
| |
| public boolean hasLongerTimeout(long millis) { |
| if (mTimeout == 0) { |
| // This is a pattern, return false to play the simple |
| // vibration. |
| return false; |
| } |
| if ((mStartTime + mTimeout) |
| < (SystemClock.uptimeMillis() + millis)) { |
| // If this vibration will end before the time passed in, let |
| // the new vibration play. |
| return false; |
| } |
| return true; |
| } |
| } |
| |
| VibratorService(Context context) { |
| // Reset the hardware to a default state, in case this is a runtime |
| // restart instead of a fresh boot. |
| vibratorOff(); |
| |
| mContext = context; |
| PowerManager pm = (PowerManager)context.getSystemService( |
| Context.POWER_SERVICE); |
| mWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "*vibrator*"); |
| mWakeLock.setReferenceCounted(true); |
| |
| mVibrations = new LinkedList<Vibration>(); |
| |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_SCREEN_OFF); |
| context.registerReceiver(mIntentReceiver, filter); |
| } |
| |
| public void vibrate(long milliseconds, IBinder token) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.VIBRATE) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException("Requires VIBRATE permission"); |
| } |
| int uid = Binder.getCallingUid(); |
| // We're running in the system server so we cannot crash. Check for a |
| // timeout of 0 or negative. This will ensure that a vibration has |
| // either a timeout of > 0 or a non-null pattern. |
| if (milliseconds <= 0 || (mCurrentVibration != null |
| && mCurrentVibration.hasLongerTimeout(milliseconds))) { |
| // Ignore this vibration since the current vibration will play for |
| // longer than milliseconds. |
| return; |
| } |
| Vibration vib = new Vibration(token, milliseconds, uid); |
| synchronized (mVibrations) { |
| removeVibrationLocked(token); |
| doCancelVibrateLocked(); |
| mCurrentVibration = vib; |
| startVibrationLocked(vib); |
| } |
| } |
| |
| private boolean isAll0(long[] pattern) { |
| int N = pattern.length; |
| for (int i = 0; i < N; i++) { |
| if (pattern[i] != 0) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| public void vibratePattern(long[] pattern, int repeat, IBinder token) { |
| if (mContext.checkCallingOrSelfPermission(android.Manifest.permission.VIBRATE) |
| != PackageManager.PERMISSION_GRANTED) { |
| throw new SecurityException("Requires VIBRATE permission"); |
| } |
| int uid = Binder.getCallingUid(); |
| // so wakelock calls will succeed |
| long identity = Binder.clearCallingIdentity(); |
| try { |
| if (false) { |
| String s = ""; |
| int N = pattern.length; |
| for (int i=0; i<N; i++) { |
| s += " " + pattern[i]; |
| } |
| Slog.i(TAG, "vibrating with pattern: " + s); |
| } |
| |
| // we're running in the server so we can't fail |
| if (pattern == null || pattern.length == 0 |
| || isAll0(pattern) |
| || repeat >= pattern.length || token == null) { |
| return; |
| } |
| |
| Vibration vib = new Vibration(token, pattern, repeat, uid); |
| try { |
| token.linkToDeath(vib, 0); |
| } catch (RemoteException e) { |
| return; |
| } |
| |
| synchronized (mVibrations) { |
| removeVibrationLocked(token); |
| doCancelVibrateLocked(); |
| if (repeat >= 0) { |
| mVibrations.addFirst(vib); |
| startNextVibrationLocked(); |
| } else { |
| // A negative repeat means that this pattern is not meant |
| // to repeat. Treat it like a simple vibration. |
| mCurrentVibration = vib; |
| startVibrationLocked(vib); |
| } |
| } |
| } |
| finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| public void cancelVibrate(IBinder token) { |
| mContext.enforceCallingOrSelfPermission( |
| android.Manifest.permission.VIBRATE, |
| "cancelVibrate"); |
| |
| // so wakelock calls will succeed |
| long identity = Binder.clearCallingIdentity(); |
| try { |
| synchronized (mVibrations) { |
| final Vibration vib = removeVibrationLocked(token); |
| if (vib == mCurrentVibration) { |
| doCancelVibrateLocked(); |
| startNextVibrationLocked(); |
| } |
| } |
| } |
| finally { |
| Binder.restoreCallingIdentity(identity); |
| } |
| } |
| |
| private final Runnable mVibrationRunnable = new Runnable() { |
| public void run() { |
| synchronized (mVibrations) { |
| doCancelVibrateLocked(); |
| startNextVibrationLocked(); |
| } |
| } |
| }; |
| |
| // Lock held on mVibrations |
| private void doCancelVibrateLocked() { |
| if (mThread != null) { |
| synchronized (mThread) { |
| mThread.mDone = true; |
| mThread.notify(); |
| } |
| mThread = null; |
| } |
| vibratorOff(); |
| mH.removeCallbacks(mVibrationRunnable); |
| } |
| |
| // Lock held on mVibrations |
| private void startNextVibrationLocked() { |
| if (mVibrations.size() <= 0) { |
| return; |
| } |
| mCurrentVibration = mVibrations.getFirst(); |
| startVibrationLocked(mCurrentVibration); |
| } |
| |
| // Lock held on mVibrations |
| private void startVibrationLocked(final Vibration vib) { |
| if (vib.mTimeout != 0) { |
| vibratorOn(vib.mTimeout); |
| mH.postDelayed(mVibrationRunnable, vib.mTimeout); |
| } else { |
| // mThread better be null here. doCancelVibrate should always be |
| // called before startNextVibrationLocked or startVibrationLocked. |
| mThread = new VibrateThread(vib); |
| mThread.start(); |
| } |
| } |
| |
| // Lock held on mVibrations |
| private Vibration removeVibrationLocked(IBinder token) { |
| ListIterator<Vibration> iter = mVibrations.listIterator(0); |
| while (iter.hasNext()) { |
| Vibration vib = iter.next(); |
| if (vib.mToken == token) { |
| iter.remove(); |
| return vib; |
| } |
| } |
| // We might be looking for a simple vibration which is only stored in |
| // mCurrentVibration. |
| if (mCurrentVibration != null && mCurrentVibration.mToken == token) { |
| return mCurrentVibration; |
| } |
| return null; |
| } |
| |
| private class VibrateThread extends Thread { |
| final Vibration mVibration; |
| boolean mDone; |
| |
| VibrateThread(Vibration vib) { |
| mVibration = vib; |
| mTmpWorkSource.set(vib.mUid); |
| mWakeLock.setWorkSource(mTmpWorkSource); |
| mWakeLock.acquire(); |
| } |
| |
| private void delay(long duration) { |
| if (duration > 0) { |
| long bedtime = SystemClock.uptimeMillis(); |
| do { |
| try { |
| this.wait(duration); |
| } |
| catch (InterruptedException e) { |
| } |
| if (mDone) { |
| break; |
| } |
| duration = duration |
| - SystemClock.uptimeMillis() - bedtime; |
| } while (duration > 0); |
| } |
| } |
| |
| public void run() { |
| Process.setThreadPriority(Process.THREAD_PRIORITY_URGENT_DISPLAY); |
| synchronized (this) { |
| int index = 0; |
| long[] pattern = mVibration.mPattern; |
| int len = pattern.length; |
| int repeat = mVibration.mRepeat; |
| long duration = 0; |
| |
| while (!mDone) { |
| // add off-time duration to any accumulated on-time duration |
| if (index < len) { |
| duration += pattern[index++]; |
| } |
| |
| // sleep until it is time to start the vibrator |
| delay(duration); |
| if (mDone) { |
| break; |
| } |
| |
| if (index < len) { |
| // read on-time duration and start the vibrator |
| // duration is saved for delay() at top of loop |
| duration = pattern[index++]; |
| if (duration > 0) { |
| VibratorService.this.vibratorOn(duration); |
| } |
| } else { |
| if (repeat < 0) { |
| break; |
| } else { |
| index = repeat; |
| duration = 0; |
| } |
| } |
| } |
| mWakeLock.release(); |
| } |
| synchronized (mVibrations) { |
| if (mThread == this) { |
| mThread = null; |
| } |
| if (!mDone) { |
| // If this vibration finished naturally, start the next |
| // vibration. |
| mVibrations.remove(mVibration); |
| startNextVibrationLocked(); |
| } |
| } |
| } |
| }; |
| |
| BroadcastReceiver mIntentReceiver = new BroadcastReceiver() { |
| public void onReceive(Context context, Intent intent) { |
| if (intent.getAction().equals(Intent.ACTION_SCREEN_OFF)) { |
| synchronized (mVibrations) { |
| doCancelVibrateLocked(); |
| mVibrations.clear(); |
| } |
| } |
| } |
| }; |
| |
| private Handler mH = new Handler(); |
| |
| private final Context mContext; |
| private final PowerManager.WakeLock mWakeLock; |
| |
| volatile VibrateThread mThread; |
| |
| native static void vibratorOn(long milliseconds); |
| native static void vibratorOff(); |
| } |