Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.server.power; |
| 18 | |
| 19 | import android.hardware.Sensor; |
| 20 | import android.hardware.SensorEvent; |
| 21 | import android.hardware.SensorEventListener; |
| 22 | import android.hardware.SensorManager; |
| 23 | import android.os.BatteryManager; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 24 | import android.os.Handler; |
| 25 | import android.os.Message; |
Jeff Brown | 20e2875 | 2013-09-10 17:13:28 -0700 | [diff] [blame] | 26 | import android.os.SystemClock; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 27 | import android.util.Slog; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 28 | import android.util.TimeUtils; |
Netta P | 958d0a5 | 2017-02-07 11:20:55 -0800 | [diff] [blame] | 29 | import android.util.proto.ProtoOutputStream; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 30 | |
Santos Cordon | 9b510a2 | 2018-08-24 16:42:54 +0100 | [diff] [blame] | 31 | import com.android.internal.annotations.VisibleForTesting; |
| 32 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 33 | import java.io.PrintWriter; |
| 34 | |
| 35 | /** |
| 36 | * Implements heuristics to detect docking or undocking from a wireless charger. |
| 37 | * <p> |
| 38 | * Some devices have wireless charging circuits that are unable to detect when the |
| 39 | * device is resting on a wireless charger except when the device is actually |
| 40 | * receiving power from the charger. The device may stop receiving power |
| 41 | * if the battery is already nearly full or if it is too hot. As a result, we cannot |
| 42 | * always rely on the battery service wireless plug signal to accurately indicate |
| 43 | * whether the device has been docked or undocked from a wireless charger. |
| 44 | * </p><p> |
| 45 | * This is a problem because the power manager typically wakes up the screen and |
| 46 | * plays a tone when the device is docked in a wireless charger. It is important |
| 47 | * for the system to suppress spurious docking and undocking signals because they |
| 48 | * can be intrusive for the user (especially if they cause a tone to be played |
| 49 | * late at night for no apparent reason). |
| 50 | * </p><p> |
| 51 | * To avoid spurious signals, we apply some special policies to wireless chargers. |
| 52 | * </p><p> |
| 53 | * 1. Don't wake the device when undocked from the wireless charger because |
| 54 | * it might be that the device is still resting on the wireless charger |
| 55 | * but is not receiving power anymore because the battery is full. |
| 56 | * Ideally we would wake the device if we could be certain that the user had |
| 57 | * picked it up from the wireless charger but due to hardware limitations we |
| 58 | * must be more conservative. |
| 59 | * </p><p> |
| 60 | * 2. Don't wake the device when docked on a wireless charger if the |
| 61 | * battery already appears to be mostly full. This situation may indicate |
| 62 | * that the device was resting on the charger the whole time and simply |
| 63 | * wasn't receiving power because the battery was already full. We can't tell |
| 64 | * whether the device was just placed on the charger or whether it has |
| 65 | * been there for half of the night slowly discharging until it reached |
| 66 | * the point where it needed to start charging again. So we suppress docking |
| 67 | * signals that occur when the battery level is above a given threshold. |
| 68 | * </p><p> |
| 69 | * 3. Don't wake the device when docked on a wireless charger if it does |
| 70 | * not appear to have moved since it was last undocked because it may |
| 71 | * be that the prior undocking signal was spurious. We use the gravity |
| 72 | * sensor to detect this case. |
| 73 | * </p> |
| 74 | */ |
Santos Cordon | 9b510a2 | 2018-08-24 16:42:54 +0100 | [diff] [blame] | 75 | @VisibleForTesting |
| 76 | public class WirelessChargerDetector { |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 77 | private static final String TAG = "WirelessChargerDetector"; |
| 78 | private static final boolean DEBUG = false; |
| 79 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 80 | // The minimum amount of time to spend watching the sensor before making |
| 81 | // a determination of whether movement occurred. |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 82 | private static final long SETTLE_TIME_MILLIS = 800; |
| 83 | |
| 84 | // The sensor sampling interval. |
| 85 | private static final int SAMPLING_INTERVAL_MILLIS = 50; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 86 | |
| 87 | // The minimum number of samples that must be collected. |
| 88 | private static final int MIN_SAMPLES = 3; |
| 89 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 90 | // To detect movement, we compute the angle between the gravity vector |
| 91 | // at rest and the current gravity vector. This field specifies the |
| 92 | // cosine of the maximum angle variance that we tolerate while at rest. |
| 93 | private static final double MOVEMENT_ANGLE_COS_THRESHOLD = Math.cos(5 * Math.PI / 180); |
| 94 | |
| 95 | // Sanity thresholds for the gravity vector. |
| 96 | private static final double MIN_GRAVITY = SensorManager.GRAVITY_EARTH - 1.0f; |
| 97 | private static final double MAX_GRAVITY = SensorManager.GRAVITY_EARTH + 1.0f; |
| 98 | |
| 99 | private final Object mLock = new Object(); |
| 100 | |
| 101 | private final SensorManager mSensorManager; |
| 102 | private final SuspendBlocker mSuspendBlocker; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 103 | private final Handler mHandler; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 104 | |
| 105 | // The gravity sensor, or null if none. |
| 106 | private Sensor mGravitySensor; |
| 107 | |
| 108 | // Previously observed wireless power state. |
| 109 | private boolean mPoweredWirelessly; |
| 110 | |
| 111 | // True if the device is thought to be at rest on a wireless charger. |
| 112 | private boolean mAtRest; |
| 113 | |
| 114 | // The gravity vector most recently observed while at rest. |
| 115 | private float mRestX, mRestY, mRestZ; |
| 116 | |
| 117 | /* These properties are only meaningful while detection is in progress. */ |
| 118 | |
| 119 | // True if detection is in progress. |
| 120 | // The suspend blocker is held while this is the case. |
| 121 | private boolean mDetectionInProgress; |
| 122 | |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 123 | // The time when detection was last performed. |
| 124 | private long mDetectionStartTime; |
| 125 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 126 | // True if the rest position should be updated if at rest. |
| 127 | // Otherwise, the current rest position is simply checked and cleared if movement |
| 128 | // is detected but no new rest position is stored. |
| 129 | private boolean mMustUpdateRestPosition; |
| 130 | |
| 131 | // The total number of samples collected. |
| 132 | private int mTotalSamples; |
| 133 | |
| 134 | // The number of samples collected that showed evidence of not being at rest. |
| 135 | private int mMovingSamples; |
| 136 | |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 137 | // The value of the first sample that was collected. |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 138 | private float mFirstSampleX, mFirstSampleY, mFirstSampleZ; |
| 139 | |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 140 | // The value of the last sample that was collected. |
Jeff Brown | 20e2875 | 2013-09-10 17:13:28 -0700 | [diff] [blame] | 141 | private float mLastSampleX, mLastSampleY, mLastSampleZ; |
| 142 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 143 | public WirelessChargerDetector(SensorManager sensorManager, |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 144 | SuspendBlocker suspendBlocker, Handler handler) { |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 145 | mSensorManager = sensorManager; |
| 146 | mSuspendBlocker = suspendBlocker; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 147 | mHandler = handler; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 148 | |
| 149 | mGravitySensor = sensorManager.getDefaultSensor(Sensor.TYPE_GRAVITY); |
| 150 | } |
| 151 | |
| 152 | public void dump(PrintWriter pw) { |
| 153 | synchronized (mLock) { |
| 154 | pw.println(); |
| 155 | pw.println("Wireless Charger Detector State:"); |
| 156 | pw.println(" mGravitySensor=" + mGravitySensor); |
| 157 | pw.println(" mPoweredWirelessly=" + mPoweredWirelessly); |
| 158 | pw.println(" mAtRest=" + mAtRest); |
| 159 | pw.println(" mRestX=" + mRestX + ", mRestY=" + mRestY + ", mRestZ=" + mRestZ); |
| 160 | pw.println(" mDetectionInProgress=" + mDetectionInProgress); |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 161 | pw.println(" mDetectionStartTime=" + (mDetectionStartTime == 0 ? "0 (never)" |
| 162 | : TimeUtils.formatUptime(mDetectionStartTime))); |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 163 | pw.println(" mMustUpdateRestPosition=" + mMustUpdateRestPosition); |
| 164 | pw.println(" mTotalSamples=" + mTotalSamples); |
| 165 | pw.println(" mMovingSamples=" + mMovingSamples); |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 166 | pw.println(" mFirstSampleX=" + mFirstSampleX |
| 167 | + ", mFirstSampleY=" + mFirstSampleY + ", mFirstSampleZ=" + mFirstSampleZ); |
Jeff Brown | 20e2875 | 2013-09-10 17:13:28 -0700 | [diff] [blame] | 168 | pw.println(" mLastSampleX=" + mLastSampleX |
| 169 | + ", mLastSampleY=" + mLastSampleY + ", mLastSampleZ=" + mLastSampleZ); |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 170 | } |
| 171 | } |
| 172 | |
Netta P | 958d0a5 | 2017-02-07 11:20:55 -0800 | [diff] [blame] | 173 | public void writeToProto(ProtoOutputStream proto, long fieldId) { |
| 174 | final long wcdToken = proto.start(fieldId); |
| 175 | synchronized (mLock) { |
| 176 | proto.write(WirelessChargerDetectorProto.IS_POWERED_WIRELESSLY, mPoweredWirelessly); |
| 177 | proto.write(WirelessChargerDetectorProto.IS_AT_REST, mAtRest); |
| 178 | |
| 179 | final long restVectorToken = proto.start(WirelessChargerDetectorProto.REST); |
| 180 | proto.write(WirelessChargerDetectorProto.VectorProto.X, mRestX); |
| 181 | proto.write(WirelessChargerDetectorProto.VectorProto.Y, mRestY); |
| 182 | proto.write(WirelessChargerDetectorProto.VectorProto.Z, mRestZ); |
| 183 | proto.end(restVectorToken); |
| 184 | |
| 185 | proto.write( |
| 186 | WirelessChargerDetectorProto.IS_DETECTION_IN_PROGRESS, mDetectionInProgress); |
| 187 | proto.write(WirelessChargerDetectorProto.DETECTION_START_TIME_MS, mDetectionStartTime); |
| 188 | proto.write( |
| 189 | WirelessChargerDetectorProto.IS_MUST_UPDATE_REST_POSITION, |
| 190 | mMustUpdateRestPosition); |
| 191 | proto.write(WirelessChargerDetectorProto.TOTAL_SAMPLES, mTotalSamples); |
| 192 | proto.write(WirelessChargerDetectorProto.MOVING_SAMPLES, mMovingSamples); |
| 193 | |
| 194 | final long firstSampleVectorToken = |
| 195 | proto.start(WirelessChargerDetectorProto.FIRST_SAMPLE); |
| 196 | proto.write(WirelessChargerDetectorProto.VectorProto.X, mFirstSampleX); |
| 197 | proto.write(WirelessChargerDetectorProto.VectorProto.Y, mFirstSampleY); |
| 198 | proto.write(WirelessChargerDetectorProto.VectorProto.Z, mFirstSampleZ); |
| 199 | proto.end(firstSampleVectorToken); |
| 200 | |
| 201 | final long lastSampleVectorToken = |
| 202 | proto.start(WirelessChargerDetectorProto.LAST_SAMPLE); |
| 203 | proto.write(WirelessChargerDetectorProto.VectorProto.X, mLastSampleX); |
| 204 | proto.write(WirelessChargerDetectorProto.VectorProto.Y, mLastSampleY); |
| 205 | proto.write(WirelessChargerDetectorProto.VectorProto.Z, mLastSampleZ); |
| 206 | proto.end(lastSampleVectorToken); |
| 207 | } |
| 208 | proto.end(wcdToken); |
| 209 | } |
| 210 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 211 | /** |
| 212 | * Updates the charging state and returns true if docking was detected. |
| 213 | * |
| 214 | * @param isPowered True if the device is powered. |
| 215 | * @param plugType The current plug type. |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 216 | * @return True if the device is determined to have just been docked on a wireless |
| 217 | * charger, after suppressing spurious docking or undocking signals. |
| 218 | */ |
Beverly | fcaab29 | 2018-03-19 10:42:06 -0400 | [diff] [blame] | 219 | public boolean update(boolean isPowered, int plugType) { |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 220 | synchronized (mLock) { |
| 221 | final boolean wasPoweredWirelessly = mPoweredWirelessly; |
| 222 | |
| 223 | if (isPowered && plugType == BatteryManager.BATTERY_PLUGGED_WIRELESS) { |
| 224 | // The device is receiving power from the wireless charger. |
| 225 | // Update the rest position asynchronously. |
| 226 | mPoweredWirelessly = true; |
| 227 | mMustUpdateRestPosition = true; |
| 228 | startDetectionLocked(); |
| 229 | } else { |
| 230 | // The device may or may not be on the wireless charger depending on whether |
| 231 | // the unplug signal that we received was spurious. |
| 232 | mPoweredWirelessly = false; |
| 233 | if (mAtRest) { |
| 234 | if (plugType != 0 && plugType != BatteryManager.BATTERY_PLUGGED_WIRELESS) { |
| 235 | // The device was plugged into a new non-wireless power source. |
| 236 | // It's safe to assume that it is no longer on the wireless charger. |
| 237 | mMustUpdateRestPosition = false; |
| 238 | clearAtRestLocked(); |
| 239 | } else { |
| 240 | // The device may still be on the wireless charger but we don't know. |
| 241 | // Check whether the device has remained at rest on the charger |
| 242 | // so that we will know to ignore the next wireless plug event |
| 243 | // if needed. |
| 244 | startDetectionLocked(); |
| 245 | } |
| 246 | } |
| 247 | } |
| 248 | |
| 249 | // Report that the device has been docked only if the device just started |
Beverly | fcaab29 | 2018-03-19 10:42:06 -0400 | [diff] [blame] | 250 | // receiving power wirelessly and the device is not known to already be at rest |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 251 | // on the wireless charger from earlier. |
Beverly | fcaab29 | 2018-03-19 10:42:06 -0400 | [diff] [blame] | 252 | return mPoweredWirelessly && !wasPoweredWirelessly && !mAtRest; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 253 | } |
| 254 | } |
| 255 | |
| 256 | private void startDetectionLocked() { |
| 257 | if (!mDetectionInProgress && mGravitySensor != null) { |
| 258 | if (mSensorManager.registerListener(mListener, mGravitySensor, |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 259 | SAMPLING_INTERVAL_MILLIS * 1000)) { |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 260 | mSuspendBlocker.acquire(); |
| 261 | mDetectionInProgress = true; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 262 | mDetectionStartTime = SystemClock.uptimeMillis(); |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 263 | mTotalSamples = 0; |
| 264 | mMovingSamples = 0; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 265 | |
| 266 | Message msg = Message.obtain(mHandler, mSensorTimeout); |
| 267 | msg.setAsynchronous(true); |
| 268 | mHandler.sendMessageDelayed(msg, SETTLE_TIME_MILLIS); |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 269 | } |
| 270 | } |
| 271 | } |
| 272 | |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 273 | private void finishDetectionLocked() { |
| 274 | if (mDetectionInProgress) { |
| 275 | mSensorManager.unregisterListener(mListener); |
| 276 | mHandler.removeCallbacks(mSensorTimeout); |
| 277 | |
| 278 | if (mMustUpdateRestPosition) { |
| 279 | clearAtRestLocked(); |
| 280 | if (mTotalSamples < MIN_SAMPLES) { |
| 281 | Slog.w(TAG, "Wireless charger detector is broken. Only received " |
| 282 | + mTotalSamples + " samples from the gravity sensor but we " |
| 283 | + "need at least " + MIN_SAMPLES + " and we expect to see " |
| 284 | + "about " + SETTLE_TIME_MILLIS / SAMPLING_INTERVAL_MILLIS |
| 285 | + " on average."); |
| 286 | } else if (mMovingSamples == 0) { |
| 287 | mAtRest = true; |
| 288 | mRestX = mLastSampleX; |
| 289 | mRestY = mLastSampleY; |
| 290 | mRestZ = mLastSampleZ; |
| 291 | } |
| 292 | mMustUpdateRestPosition = false; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 293 | } |
| 294 | |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 295 | if (DEBUG) { |
| 296 | Slog.d(TAG, "New state: mAtRest=" + mAtRest |
| 297 | + ", mRestX=" + mRestX + ", mRestY=" + mRestY + ", mRestZ=" + mRestZ |
| 298 | + ", mTotalSamples=" + mTotalSamples |
| 299 | + ", mMovingSamples=" + mMovingSamples); |
| 300 | } |
| 301 | |
| 302 | mDetectionInProgress = false; |
| 303 | mSuspendBlocker.release(); |
| 304 | } |
| 305 | } |
| 306 | |
| 307 | private void processSampleLocked(float x, float y, float z) { |
| 308 | if (mDetectionInProgress) { |
Jeff Brown | 20e2875 | 2013-09-10 17:13:28 -0700 | [diff] [blame] | 309 | mLastSampleX = x; |
| 310 | mLastSampleY = y; |
| 311 | mLastSampleZ = z; |
| 312 | |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 313 | mTotalSamples += 1; |
| 314 | if (mTotalSamples == 1) { |
| 315 | // Save information about the first sample collected. |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 316 | mFirstSampleX = x; |
| 317 | mFirstSampleY = y; |
| 318 | mFirstSampleZ = z; |
| 319 | } else { |
| 320 | // Determine whether movement has occurred relative to the first sample. |
| 321 | if (hasMoved(mFirstSampleX, mFirstSampleY, mFirstSampleZ, x, y, z)) { |
| 322 | mMovingSamples += 1; |
| 323 | } |
| 324 | } |
| 325 | |
| 326 | // Clear the at rest flag if movement has occurred relative to the rest sample. |
| 327 | if (mAtRest && hasMoved(mRestX, mRestY, mRestZ, x, y, z)) { |
| 328 | if (DEBUG) { |
| 329 | Slog.d(TAG, "No longer at rest: " |
| 330 | + "mRestX=" + mRestX + ", mRestY=" + mRestY + ", mRestZ=" + mRestZ |
| 331 | + ", x=" + x + ", y=" + y + ", z=" + z); |
| 332 | } |
| 333 | clearAtRestLocked(); |
| 334 | } |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 335 | } |
| 336 | } |
| 337 | |
| 338 | private void clearAtRestLocked() { |
| 339 | mAtRest = false; |
| 340 | mRestX = 0; |
| 341 | mRestY = 0; |
| 342 | mRestZ = 0; |
| 343 | } |
| 344 | |
| 345 | private static boolean hasMoved(float x1, float y1, float z1, |
| 346 | float x2, float y2, float z2) { |
| 347 | final double dotProduct = (x1 * x2) + (y1 * y2) + (z1 * z2); |
| 348 | final double mag1 = Math.sqrt((x1 * x1) + (y1 * y1) + (z1 * z1)); |
| 349 | final double mag2 = Math.sqrt((x2 * x2) + (y2 * y2) + (z2 * z2)); |
| 350 | if (mag1 < MIN_GRAVITY || mag1 > MAX_GRAVITY |
| 351 | || mag2 < MIN_GRAVITY || mag2 > MAX_GRAVITY) { |
| 352 | if (DEBUG) { |
| 353 | Slog.d(TAG, "Weird gravity vector: mag1=" + mag1 + ", mag2=" + mag2); |
| 354 | } |
| 355 | return true; |
| 356 | } |
| 357 | final boolean moved = (dotProduct < mag1 * mag2 * MOVEMENT_ANGLE_COS_THRESHOLD); |
| 358 | if (DEBUG) { |
| 359 | Slog.d(TAG, "Check: moved=" + moved |
| 360 | + ", x1=" + x1 + ", y1=" + y1 + ", z1=" + z1 |
| 361 | + ", x2=" + x2 + ", y2=" + y2 + ", z2=" + z2 |
| 362 | + ", angle=" + (Math.acos(dotProduct / mag1 / mag2) * 180 / Math.PI) |
| 363 | + ", dotProduct=" + dotProduct |
| 364 | + ", mag1=" + mag1 + ", mag2=" + mag2); |
| 365 | } |
| 366 | return moved; |
| 367 | } |
| 368 | |
| 369 | private final SensorEventListener mListener = new SensorEventListener() { |
| 370 | @Override |
| 371 | public void onSensorChanged(SensorEvent event) { |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 372 | synchronized (mLock) { |
| 373 | processSampleLocked(event.values[0], event.values[1], event.values[2]); |
| 374 | } |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 375 | } |
| 376 | |
| 377 | @Override |
| 378 | public void onAccuracyChanged(Sensor sensor, int accuracy) { |
| 379 | } |
| 380 | }; |
Jeff Brown | dbcc8a2 | 2013-10-01 16:16:44 -0700 | [diff] [blame] | 381 | |
| 382 | private final Runnable mSensorTimeout = new Runnable() { |
| 383 | @Override |
| 384 | public void run() { |
| 385 | synchronized (mLock) { |
| 386 | finishDetectionLocked(); |
| 387 | } |
| 388 | } |
| 389 | }; |
Jeff Brown | 3b97159 | 2013-01-09 18:46:37 -0800 | [diff] [blame] | 390 | } |