1/* 2 * Copyright (C) 2016 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 17package com.android.car; 18 19import android.content.Context; 20import android.hardware.automotive.vehicle.V2_0.VehicleAudioContextFlag; 21import android.media.AudioManager; 22import android.media.IAudioService; 23import android.media.IVolumeController; 24import android.os.Handler; 25import android.os.HandlerThread; 26import android.os.Looper; 27import android.os.Message; 28import android.os.RemoteCallbackList; 29import android.os.RemoteException; 30import android.os.ServiceManager; 31import android.provider.Settings; 32import android.telecom.TelecomManager; 33import android.util.ArrayMap; 34import android.util.Log; 35import android.util.SparseArray; 36import android.view.KeyEvent; 37 38import com.android.car.CarVolumeService.CarVolumeController; 39import com.android.car.hal.AudioHalService; 40import com.android.internal.annotations.GuardedBy; 41 42import java.io.PrintWriter; 43import java.util.Map; 44 45/** 46 * A factory class to create {@link com.android.car.CarVolumeService.CarVolumeController} based 47 * on car properties. 48 */ 49public class CarVolumeControllerFactory { 50 // STOPSHIP if true. 51 private static final boolean DBG = false; 52 53 public static CarVolumeController createCarVolumeController(Context context, 54 CarAudioService audioService, AudioHalService audioHal, CarInputService inputService) { 55 final boolean volumeSupported = audioHal.isAudioVolumeSupported(); 56 57 // Case 1: Car Audio Module does not support volume controls 58 if (!volumeSupported) { 59 return new SimpleCarVolumeController(context); 60 } 61 return new CarExternalVolumeController(context, audioService, audioHal, inputService); 62 } 63 64 public static boolean interceptVolKeyBeforeDispatching(Context context) { 65 Log.d(CarLog.TAG_AUDIO, "interceptVolKeyBeforeDispatching"); 66 67 TelecomManager telecomManager = (TelecomManager) 68 context.getSystemService(Context.TELECOM_SERVICE); 69 if (telecomManager != null && telecomManager.isRinging()) { 70 // If an incoming call is ringing, either VOLUME key means 71 // "silence ringer". This is consistent with current android phone's behavior 72 Log.i(CarLog.TAG_AUDIO, "interceptKeyBeforeQueueing:" 73 + " VOLUME key-down while ringing: Silence ringer!"); 74 75 // Silence the ringer. (It's safe to call this 76 // even if the ringer has already been silenced.) 77 telecomManager.silenceRinger(); 78 return true; 79 } 80 return false; 81 } 82 83 public static boolean isVolumeKey(KeyEvent event) { 84 return event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_DOWN 85 || event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_UP; 86 } 87 88 /** 89 * To control volumes through {@link android.media.AudioManager} when car audio module does not 90 * support volume controls. 91 */ 92 public static final class SimpleCarVolumeController extends CarVolumeController { 93 private final AudioManager mAudioManager; 94 private final Context mContext; 95 96 public SimpleCarVolumeController(Context context) { 97 mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); 98 mContext = context; 99 } 100 101 @Override 102 void init() { 103 } 104 105 @Override 106 void release() { 107 } 108 109 @Override 110 public void setStreamVolume(int stream, int index, int flags) { 111 if (DBG) { 112 Log.d(CarLog.TAG_AUDIO, "setStreamVolume " + stream + " " + index + " " + flags); 113 } 114 mAudioManager.setStreamVolume(stream, index, flags); 115 } 116 117 @Override 118 public int getStreamVolume(int stream) { 119 return mAudioManager.getStreamVolume(stream); 120 } 121 122 @Override 123 public void setVolumeController(IVolumeController controller) { 124 mAudioManager.setVolumeController(controller); 125 } 126 127 @Override 128 public int getStreamMaxVolume(int stream) { 129 return mAudioManager.getStreamMaxVolume(stream); 130 } 131 132 @Override 133 public int getStreamMinVolume(int stream) { 134 return mAudioManager.getStreamMinVolume(stream); 135 } 136 137 @Override 138 public boolean onKeyEvent(KeyEvent event) { 139 if (!isVolumeKey(event)) { 140 return false; 141 } 142 handleVolumeKeyDefault(event); 143 return true; 144 } 145 146 @Override 147 public void dump(PrintWriter writer) { 148 writer.println("Volume controller:" + SimpleCarVolumeController.class.getSimpleName()); 149 // nothing else to dump 150 } 151 152 private void handleVolumeKeyDefault(KeyEvent event) { 153 if (event.getAction() != KeyEvent.ACTION_DOWN 154 || interceptVolKeyBeforeDispatching(mContext)) { 155 return; 156 } 157 158 boolean volUp = event.getKeyCode() == KeyEvent.KEYCODE_VOLUME_UP; 159 int flags = AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_PLAY_SOUND 160 | AudioManager.FLAG_FROM_KEY; 161 IAudioService audioService = getAudioService(); 162 String pkgName = mContext.getOpPackageName(); 163 try { 164 if (audioService != null) { 165 audioService.adjustSuggestedStreamVolume( 166 volUp ? AudioManager.ADJUST_RAISE : AudioManager.ADJUST_LOWER, 167 AudioManager.USE_DEFAULT_STREAM_TYPE, flags, pkgName, CarLog.TAG_INPUT); 168 } 169 } catch (RemoteException e) { 170 Log.e(CarLog.TAG_INPUT, "Error calling android audio service.", e); 171 } 172 } 173 174 private static IAudioService getAudioService() { 175 IAudioService audioService = IAudioService.Stub.asInterface( 176 ServiceManager.checkService(Context.AUDIO_SERVICE)); 177 if (audioService == null) { 178 Log.w(CarLog.TAG_INPUT, "Unable to find IAudioService interface."); 179 } 180 return audioService; 181 } 182 } 183 184 /** 185 * The car volume controller to use when the car audio modules supports volume controls. 186 * 187 * Depending on whether the car support audio context and has persistent memory, we need to 188 * handle per context volume change properly. 189 * 190 * Regardless whether car supports audio context or not, we need to keep per audio context 191 * volume internally. If we only support single channel, then we only send the volume change 192 * event when that stream is in focus; Otherwise, we need to adjust the stream volume either on 193 * software mixer level or send it the car audio module if the car support audio context 194 * and multi channel. TODO: Add support for multi channel. bug: 32095376 195 * 196 * Per context volume should be persisted, so the volumes can stay the same across boots. 197 * Depending on the hardware property, this can be persisted on car side (or/and android side). 198 * TODO: we need to define one single source of truth if the car has memory. bug: 32091839 199 */ 200 public static class CarExternalVolumeController extends CarVolumeController 201 implements CarInputService.KeyEventListener, AudioHalService.AudioHalVolumeListener, 202 CarAudioService.AudioContextChangeListener { 203 private static final String TAG = CarLog.TAG_AUDIO + ".VolCtrl"; 204 private static final int MSG_UPDATE_VOLUME = 0; 205 private static final int MSG_UPDATE_HAL = 1; 206 private static final int MSG_SUPPRESS_UI_FOR_VOLUME = 2; 207 private static final int MSG_VOLUME_UI_RESTORE = 3; 208 209 // within 5 seconds after a UI invisible volume change (e.g., due to audio context change, 210 // or explicitly flag), we will not show UI in respond to that particular volume changes 211 // events from HAL (context and volume index must match). 212 private static final int HIDE_VOLUME_UI_MILLISECONDS = 5 * 1000; // 5 seconds 213 214 private final Context mContext; 215 private final AudioRoutingPolicy mPolicy; 216 private final AudioHalService mHal; 217 private final CarInputService mInputService; 218 private final CarAudioService mAudioService; 219 220 private int mSupportedAudioContext; 221 222 private boolean mHasExternalMemory; 223 private boolean mMasterVolumeOnly; 224 225 @GuardedBy("this") 226 private int mCurrentContext = CarVolumeService.DEFAULT_CAR_AUDIO_CONTEXT; 227 // current logical volume, the key is car audio context 228 @GuardedBy("this") 229 private final SparseArray<Integer> mCurrentCarContextVolume = 230 new SparseArray<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); 231 // stream volume limit, the key is car audio context type 232 @GuardedBy("this") 233 private final SparseArray<Integer> mCarContextVolumeMax = 234 new SparseArray<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); 235 // stream volume limit, the key is car audio context type 236 @GuardedBy("this") 237 private final RemoteCallbackList<IVolumeController> mVolumeControllers = 238 new RemoteCallbackList<>(); 239 @GuardedBy("this") 240 private int[] mSuppressUiForVolume = new int[2]; 241 @GuardedBy("this") 242 private boolean mShouldSuppress = false; 243 private HandlerThread mVolumeThread; 244 private Handler mHandler; 245 246 /** 247 * Convert an car context to the car stream. 248 * 249 * @return If car supports audio context, then it returns the car audio context. Otherwise, 250 * it returns the physical stream that maps to this logical stream. 251 */ 252 private int carContextToCarStream(int carContext) { 253 if (mSupportedAudioContext == 0) { 254 int physicalStream = mPolicy.getPhysicalStreamForLogicalStream( 255 AudioHalService.carContextToCarUsage(carContext)); 256 return physicalStream; 257 } else { 258 return carContext == VehicleAudioContextFlag.UNKNOWN_FLAG ? 259 mCurrentContext : carContext; 260 } 261 } 262 263 private void writeVolumeToSettings(int carContext, int volume) { 264 String key = VolumeUtils.CAR_AUDIO_CONTEXT_SETTINGS.get(carContext); 265 if (key != null) { 266 Settings.Global.putInt(mContext.getContentResolver(), key, volume); 267 } 268 } 269 270 /** 271 * All updates to external components should be posted to this handler to avoid holding 272 * the internal lock while sending updates. 273 */ 274 private final class VolumeHandler extends Handler { 275 public VolumeHandler(Looper looper) { 276 super(looper); 277 } 278 @Override 279 public void handleMessage(Message msg) { 280 int stream; 281 int volume; 282 switch (msg.what) { 283 case MSG_UPDATE_VOLUME: 284 // arg1 is car context 285 stream = msg.arg1; 286 volume = (int) msg.obj; 287 int flag = msg.arg2; 288 synchronized (CarExternalVolumeController.this) { 289 // the suppressed stream is sending us update.... 290 if (mShouldSuppress && stream == mSuppressUiForVolume[0]) { 291 // the volume matches, we want to suppress it 292 if (volume == mSuppressUiForVolume[1]) { 293 if (DBG) { 294 Log.d(TAG, "Suppress Volume UI for stream " 295 + stream + " volume: " + volume); 296 } 297 flag &= ~AudioManager.FLAG_SHOW_UI; 298 } 299 // No matter if the volume matches or not, we will stop suppressing 300 // UI for this stream now. After an audio context switch, user may 301 // quickly turn the nob, -1 and +1, it ends the same volume, 302 // but we should show the UI for both. 303 removeMessages(MSG_VOLUME_UI_RESTORE); 304 mShouldSuppress = false; 305 } 306 } 307 final int size = mVolumeControllers.beginBroadcast(); 308 try { 309 for (int i = 0; i < size; i++) { 310 try { 311 mVolumeControllers.getBroadcastItem(i).volumeChanged( 312 VolumeUtils.carContextToAndroidStream(stream), flag); 313 } catch (RemoteException ignored) { 314 } 315 } 316 } finally { 317 mVolumeControllers.finishBroadcast(); 318 } 319 break; 320 case MSG_UPDATE_HAL: 321 stream = msg.arg1; 322 volume = msg.arg2; 323 synchronized (CarExternalVolumeController.this) { 324 if (mMasterVolumeOnly) { 325 stream = 0; 326 } 327 } 328 mHal.setStreamVolume(stream, volume); 329 break; 330 case MSG_SUPPRESS_UI_FOR_VOLUME: 331 if (DBG) { 332 Log.d(TAG, "Suppress stream volume " + msg.arg1 + " " + msg.arg2); 333 } 334 synchronized (CarExternalVolumeController.this) { 335 mShouldSuppress = true; 336 mSuppressUiForVolume[0] = msg.arg1; 337 mSuppressUiForVolume[1] = msg.arg2; 338 } 339 removeMessages(MSG_VOLUME_UI_RESTORE); 340 sendMessageDelayed(obtainMessage(MSG_VOLUME_UI_RESTORE), 341 HIDE_VOLUME_UI_MILLISECONDS); 342 break; 343 case MSG_VOLUME_UI_RESTORE: 344 if (DBG) { 345 Log.d(TAG, "Volume Ui suppress expired"); 346 } 347 synchronized (CarExternalVolumeController.this) { 348 mShouldSuppress = false; 349 } 350 break; 351 default: 352 break; 353 } 354 } 355 } 356 357 public CarExternalVolumeController(Context context, CarAudioService audioService, 358 AudioHalService hal, CarInputService inputService) { 359 mContext = context; 360 mAudioService = audioService; 361 mPolicy = audioService.getAudioRoutingPolicy(); 362 mHal = hal; 363 mInputService = inputService; 364 } 365 366 @Override 367 void init() { 368 mSupportedAudioContext = mHal.getSupportedAudioVolumeContexts(); 369 mHasExternalMemory = mHal.isExternalAudioVolumePersistent(); 370 mMasterVolumeOnly = mHal.isAudioVolumeMasterOnly(); 371 synchronized (this) { 372 mVolumeThread = new HandlerThread(TAG); 373 mVolumeThread.start(); 374 mHandler = new VolumeHandler(mVolumeThread.getLooper()); 375 initVolumeLimitLocked(); 376 initCurrentVolumeLocked(); 377 } 378 mInputService.setVolumeKeyListener(this); 379 mHal.setVolumeListener(this); 380 mAudioService.setAudioContextChangeListener(Looper.getMainLooper(), this); 381 } 382 383 @Override 384 void release() { 385 synchronized (this) { 386 if (mVolumeThread != null) { 387 mVolumeThread.quit(); 388 } 389 } 390 } 391 392 private void initVolumeLimitLocked() { 393 for (int i : VolumeUtils.CAR_AUDIO_CONTEXT) { 394 int carStream = carContextToCarStream(i); 395 Integer volumeMax = mHal.getStreamMaxVolume(carStream); 396 int max = volumeMax == null ? 0 : volumeMax; 397 if (max < 0) { 398 max = 0; 399 } 400 // get default stream volume limit first. 401 mCarContextVolumeMax.put(i, max); 402 } 403 } 404 405 private void initCurrentVolumeLocked() { 406 if (mHasExternalMemory) { 407 // TODO: read per context volume from audio hal. bug: 32091839 408 } else { 409 // when vhal does not work, get call can take long. For that case, 410 // for the same physical streams, cache initial get results 411 Map<Integer, Integer> volumesPerCarStream = 412 new ArrayMap<>(VolumeUtils.CAR_AUDIO_CONTEXT.length); 413 for (int i : VolumeUtils.CAR_AUDIO_CONTEXT) { 414 String key = VolumeUtils.CAR_AUDIO_CONTEXT_SETTINGS.get(i); 415 if (key != null) { 416 int vol = Settings.Global.getInt(mContext.getContentResolver(), key, -1); 417 if (vol >= 0) { 418 // Read valid volume for this car context from settings and continue; 419 mCurrentCarContextVolume.put(i, vol); 420 if (DBG) { 421 Log.d(TAG, "init volume from settings, car audio context: " 422 + i + " volume: " + vol); 423 } 424 continue; 425 } 426 } 427 428 // There is no settings for this car context. Use the current physical car 429 // stream volume as initial value instead, and put the volume into settings. 430 int carStream = carContextToCarStream(i); 431 Integer volume = volumesPerCarStream.get(carStream); 432 if (volume == null) { 433 volume = Integer.valueOf(mHal.getStreamVolume(mMasterVolumeOnly ? 0 : 434 carStream)); 435 volumesPerCarStream.put(carStream, volume); 436 } 437 mCurrentCarContextVolume.put(i, volume); 438 writeVolumeToSettings(i, volume); 439 if (DBG) { 440 Log.d(TAG, "init volume from physical stream," + 441 " car audio context: " + i + " volume: " + volume); 442 } 443 } 444 } 445 } 446 447 @Override 448 public void setStreamVolume(int stream, int index, int flags) { 449 synchronized (this) { 450 int carContext; 451 // Currently car context and android logical stream are not 452 // one-to-one mapping. In this API, Android side asks us to change a logical stream 453 // volume. If the current car audio context maps to this logical stream, then we 454 // change the volume for the current car audio context. Otherwise, we change the 455 // volume for the primary mapped car audio context. 456 if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { 457 carContext = mCurrentContext; 458 } else { 459 carContext = VolumeUtils.androidStreamToCarContext(stream); 460 } 461 if (DBG) { 462 Log.d(TAG, "Receive setStreamVolume logical stream: " + stream + " index: " 463 + index + " flags: " + flags + " maps to car context: " + carContext); 464 } 465 setStreamVolumeInternalLocked(carContext, index, flags); 466 } 467 } 468 469 private void setStreamVolumeInternalLocked(int carContext, int index, int flags) { 470 if (mCarContextVolumeMax.get(carContext) == null) { 471 Log.e(TAG, "Stream type not supported " + carContext); 472 return; 473 } 474 int limit = mCarContextVolumeMax.get(carContext); 475 if (index > limit) { 476 Log.w(TAG, "Volume exceeds volume limit. context: " + carContext 477 + " index: " + index + " limit: " + limit); 478 index = limit; 479 } 480 481 if (index < 0) { 482 index = 0; 483 } 484 485 if (mCurrentCarContextVolume.get(carContext) == index) { 486 return; 487 } 488 489 int carStream = carContextToCarStream(carContext); 490 if (DBG) { 491 Log.d(TAG, "Change car stream volume, stream: " + carStream + " volume:" + index); 492 } 493 // For single channel, only adjust the volume when the audio context is the current one. 494 if (mCurrentContext == carContext) { 495 if (DBG) { 496 Log.d(TAG, "Sending volume change to HAL"); 497 } 498 mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_HAL, carStream, index)); 499 if ((flags & AudioManager.FLAG_SHOW_UI) != 0) { 500 if (mShouldSuppress && mSuppressUiForVolume[0] == carContext) { 501 // In this case, the caller explicitly says "Show_UI" for the same context. 502 // We will respect the flag, and let the UI show. 503 mShouldSuppress = false; 504 mHandler.removeMessages(MSG_VOLUME_UI_RESTORE); 505 } 506 } else { 507 mHandler.sendMessage(mHandler.obtainMessage(MSG_SUPPRESS_UI_FOR_VOLUME, 508 carContext, index)); 509 } 510 } 511 // Record the current volume internally. 512 mCurrentCarContextVolume.put(carContext, index); 513 writeVolumeToSettings(mCurrentContext, index); 514 } 515 516 @Override 517 public int getStreamVolume(int stream) { 518 synchronized (this) { 519 if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { 520 return mCurrentCarContextVolume.get(mCurrentContext); 521 } 522 return mCurrentCarContextVolume.get(VolumeUtils.androidStreamToCarContext(stream)); 523 } 524 } 525 526 @Override 527 public void setVolumeController(IVolumeController controller) { 528 synchronized (this) { 529 mVolumeControllers.register(controller); 530 } 531 } 532 533 @Override 534 public void onVolumeChange(int carStream, int volume, int volumeState) { 535 synchronized (this) { 536 int flag = getVolumeUpdateFlag(true); 537 if (DBG) { 538 Log.d(TAG, "onVolumeChange carStream: " + carStream + " volume: " + volume 539 + " volumeState: " + volumeState 540 + " suppressUI? " + mShouldSuppress 541 + " stream: " + mSuppressUiForVolume[0] 542 + " volume: " + mSuppressUiForVolume[1]); 543 } 544 int currentCarStream = carContextToCarStream(mCurrentContext); 545 if (mMasterVolumeOnly) { //for master volume only H/W, always assume current stream 546 carStream = currentCarStream; 547 } 548 549 // Map the UNKNOWN context to the current context. 550 if (mSupportedAudioContext != 0 551 && carStream == VehicleAudioContextFlag.UNKNOWN_FLAG) { 552 carStream = mCurrentContext; 553 } 554 555 if (currentCarStream == carStream) { 556 mCurrentCarContextVolume.put(mCurrentContext, volume); 557 writeVolumeToSettings(mCurrentContext, volume); 558 mHandler.sendMessage( 559 mHandler.obtainMessage(MSG_UPDATE_VOLUME, mCurrentContext, flag, 560 new Integer(volume))); 561 } else { 562 // Hal is telling us a car stream volume has changed, but it is not the current 563 // stream. 564 // TODO: b/63778359 565 Log.w(TAG, "Car stream" + carStream 566 + " volume changed, but it is not current stream, ignored."); 567 } 568 } 569 } 570 571 private int getVolumeUpdateFlag(boolean showUi) { 572 return showUi? AudioManager.FLAG_SHOW_UI : 0; 573 } 574 575 @Override 576 public void onVolumeLimitChange(int streamNumber, int volume) { 577 // TODO: How should this update be sent to SystemUI? bug: 32095237 578 // maybe send a volume update without showing UI. 579 synchronized (this) { 580 initVolumeLimitLocked(); 581 } 582 } 583 584 @Override 585 public int getStreamMaxVolume(int stream) { 586 synchronized (this) { 587 if (VolumeUtils.carContextToAndroidStream(mCurrentContext) == stream) { 588 return mCarContextVolumeMax.get(mCurrentContext); 589 } else { 590 return mCarContextVolumeMax.get(VolumeUtils.androidStreamToCarContext(stream)); 591 } 592 } 593 } 594 595 @Override 596 public int getStreamMinVolume(int stream) { 597 return 0; // Min value is always zero. 598 } 599 600 @Override 601 public boolean onKeyEvent(KeyEvent event) { 602 if (!isVolumeKey(event)) { 603 return false; 604 } 605 final boolean down = event.getAction() == KeyEvent.ACTION_DOWN; 606 if (DBG) { 607 Log.d(TAG, "Receive volume keyevent " + event.toString()); 608 } 609 // TODO: properly handle long press on volume key, bug: 32095989 610 if (!down || interceptVolKeyBeforeDispatching(mContext)) { 611 return true; 612 } 613 614 synchronized (this) { 615 int currentVolume = mCurrentCarContextVolume.get(mCurrentContext); 616 switch (event.getKeyCode()) { 617 case KeyEvent.KEYCODE_VOLUME_UP: 618 setStreamVolumeInternalLocked(mCurrentContext, currentVolume + 1, 619 getVolumeUpdateFlag(true)); 620 break; 621 case KeyEvent.KEYCODE_VOLUME_DOWN: 622 setStreamVolumeInternalLocked(mCurrentContext, currentVolume - 1, 623 getVolumeUpdateFlag(true)); 624 break; 625 } 626 } 627 return true; 628 } 629 630 @Override 631 public void onContextChange(int primaryFocusContext, int primaryFocusPhysicalStream) { 632 synchronized (this) { 633 if(DBG) { 634 Log.d(TAG, "Audio context changed from " + mCurrentContext + " to: " 635 + primaryFocusContext + " physical: " + primaryFocusPhysicalStream); 636 } 637 // if primaryFocusContext is 0, it means nothing is playing or holding focus, 638 // we will keep the last focus context and if the user changes the volume 639 // it will go to the last audio context. 640 if (primaryFocusContext == mCurrentContext || primaryFocusContext == 0) { 641 return; 642 } 643 int oldContext = mCurrentContext; 644 mCurrentContext = primaryFocusContext; 645 // if car supports audio context and has external memory, then we don't need to do 646 // anything. 647 if(mSupportedAudioContext != 0 && mHasExternalMemory) { 648 if (DBG) { 649 Log.d(TAG, "Car support audio context and has external memory," + 650 " no volume change needed from car service"); 651 } 652 return; 653 } 654 655 // Otherwise, we need to tell Hal what the correct volume is for the new context. 656 int currentVolume = mCurrentCarContextVolume.get(primaryFocusContext); 657 658 int carStreamNumber = (mSupportedAudioContext == 0) ? primaryFocusPhysicalStream : 659 primaryFocusContext; 660 if (DBG) { 661 Log.d(TAG, "Change volume from: " 662 + mCurrentCarContextVolume.get(oldContext) 663 + " to: "+ currentVolume); 664 } 665 mHandler.sendMessage(mHandler.obtainMessage(MSG_UPDATE_HAL, carStreamNumber, 666 currentVolume)); 667 mHandler.sendMessage(mHandler.obtainMessage(MSG_SUPPRESS_UI_FOR_VOLUME, 668 mCurrentContext, currentVolume)); 669 } 670 } 671 672 @Override 673 public void dump(PrintWriter writer) { 674 writer.println("Volume controller:" + 675 CarExternalVolumeController.class.getSimpleName()); 676 synchronized (this) { 677 writer.println("mSupportedAudioContext:0x" + 678 Integer.toHexString(mSupportedAudioContext) + 679 ",mHasExternalMemory:" + mHasExternalMemory + 680 ",mMasterVolumeOnly:" + mMasterVolumeOnly); 681 writer.println("mCurrentContext:0x" + Integer.toHexString(mCurrentContext)); 682 writer.println("mCurrentCarContextVolume:"); 683 dumpVolumes(writer, mCurrentCarContextVolume); 684 writer.println("mCarContextVolumeMax:"); 685 dumpVolumes(writer, mCarContextVolumeMax); 686 writer.println("Number of volume controllers:" + 687 mVolumeControllers.getRegisteredCallbackCount()); 688 } 689 } 690 691 private void dumpVolumes(PrintWriter writer, SparseArray<Integer> array) { 692 for (int i = 0; i < array.size(); i++) { 693 writer.println("0x" + Integer.toHexString(array.keyAt(i)) + ":" + array.valueAt(i)); 694 } 695 } 696 } 697} 698