AudioService.java revision d5176cfe6eae954e9cef1e2ec17859a5089e1330
1/* 2 * Copyright (C) 2006 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 android.media; 18 19import android.app.ActivityManagerNative; 20import android.content.BroadcastReceiver; 21import android.content.ContentResolver; 22import android.content.Context; 23import android.content.Intent; 24import android.content.IntentFilter; 25import android.bluetooth.BluetoothA2dp; 26import android.bluetooth.BluetoothClass; 27import android.bluetooth.BluetoothDevice; 28import android.bluetooth.BluetoothHeadset; 29import android.content.pm.PackageManager; 30import android.database.ContentObserver; 31import android.media.MediaPlayer.OnCompletionListener; 32import android.media.MediaPlayer.OnErrorListener; 33import android.os.Binder; 34import android.os.Environment; 35import android.os.Handler; 36import android.os.IBinder; 37import android.os.Looper; 38import android.os.Message; 39import android.os.RemoteException; 40import android.os.ServiceManager; 41import android.provider.Settings; 42import android.provider.Settings.System; 43import android.util.Log; 44import android.view.VolumePanel; 45import android.os.SystemProperties; 46 47import com.android.internal.telephony.ITelephony; 48 49import java.io.FileDescriptor; 50import java.io.IOException; 51import java.io.PrintWriter; 52import java.util.ArrayList; 53import java.util.HashMap; 54import java.util.Iterator; 55import java.util.Map; 56import java.util.Set; 57import java.util.Stack; 58 59/** 60 * The implementation of the volume manager service. 61 * <p> 62 * This implementation focuses on delivering a responsive UI. Most methods are 63 * asynchronous to external calls. For example, the task of setting a volume 64 * will update our internal state, but in a separate thread will set the system 65 * volume and later persist to the database. Similarly, setting the ringer mode 66 * will update the state and broadcast a change and in a separate thread later 67 * persist the ringer mode. 68 * 69 * @hide 70 */ 71public class AudioService extends IAudioService.Stub { 72 73 private static final String TAG = "AudioService"; 74 75 /** How long to delay before persisting a change in volume/ringer mode. */ 76 private static final int PERSIST_DELAY = 3000; 77 78 private Context mContext; 79 private ContentResolver mContentResolver; 80 81 82 /** The UI */ 83 private VolumePanel mVolumePanel; 84 85 // sendMsg() flags 86 /** Used when a message should be shared across all stream types. */ 87 private static final int SHARED_MSG = -1; 88 /** If the msg is already queued, replace it with this one. */ 89 private static final int SENDMSG_REPLACE = 0; 90 /** If the msg is already queued, ignore this one and leave the old. */ 91 private static final int SENDMSG_NOOP = 1; 92 /** If the msg is already queued, queue this one and leave the old. */ 93 private static final int SENDMSG_QUEUE = 2; 94 95 // AudioHandler message.whats 96 private static final int MSG_SET_SYSTEM_VOLUME = 0; 97 private static final int MSG_PERSIST_VOLUME = 1; 98 private static final int MSG_PERSIST_RINGER_MODE = 3; 99 private static final int MSG_PERSIST_VIBRATE_SETTING = 4; 100 private static final int MSG_MEDIA_SERVER_DIED = 5; 101 private static final int MSG_MEDIA_SERVER_STARTED = 6; 102 private static final int MSG_PLAY_SOUND_EFFECT = 7; 103 104 /** @see AudioSystemThread */ 105 private AudioSystemThread mAudioSystemThread; 106 /** @see AudioHandler */ 107 private AudioHandler mAudioHandler; 108 /** @see VolumeStreamState */ 109 private VolumeStreamState[] mStreamStates; 110 private SettingsObserver mSettingsObserver; 111 112 private int mMode; 113 private Object mSettingsLock = new Object(); 114 private boolean mMediaServerOk; 115 116 /** cached value of the BT dock address to recognize undocking events */ 117 private static String sBtDockAddress = ""; 118 119 private SoundPool mSoundPool; 120 private Object mSoundEffectsLock = new Object(); 121 private static final int NUM_SOUNDPOOL_CHANNELS = 4; 122 private static final int SOUND_EFFECT_VOLUME = 1000; 123 124 /* Sound effect file names */ 125 private static final String SOUND_EFFECTS_PATH = "/media/audio/ui/"; 126 private static final String[] SOUND_EFFECT_FILES = new String[] { 127 "Effect_Tick.ogg", 128 "KeypressStandard.ogg", 129 "KeypressSpacebar.ogg", 130 "KeypressDelete.ogg", 131 "KeypressReturn.ogg" 132 }; 133 134 /* Sound effect file name mapping sound effect id (AudioManager.FX_xxx) to 135 * file index in SOUND_EFFECT_FILES[] (first column) and indicating if effect 136 * uses soundpool (second column) */ 137 private int[][] SOUND_EFFECT_FILES_MAP = new int[][] { 138 {0, -1}, // FX_KEY_CLICK 139 {0, -1}, // FX_FOCUS_NAVIGATION_UP 140 {0, -1}, // FX_FOCUS_NAVIGATION_DOWN 141 {0, -1}, // FX_FOCUS_NAVIGATION_LEFT 142 {0, -1}, // FX_FOCUS_NAVIGATION_RIGHT 143 {1, -1}, // FX_KEYPRESS_STANDARD 144 {2, -1}, // FX_KEYPRESS_SPACEBAR 145 {3, -1}, // FX_FOCUS_DELETE 146 {4, -1} // FX_FOCUS_RETURN 147 }; 148 149 /** @hide Maximum volume index values for audio streams */ 150 private int[] MAX_STREAM_VOLUME = new int[] { 151 5, // STREAM_VOICE_CALL 152 7, // STREAM_SYSTEM 153 7, // STREAM_RING 154 15, // STREAM_MUSIC 155 7, // STREAM_ALARM 156 7, // STREAM_NOTIFICATION 157 15, // STREAM_BLUETOOTH_SCO 158 7, // STREAM_SYSTEM_ENFORCED 159 15, // STREAM_DTMF 160 15 // STREAM_TTS 161 }; 162 /* STREAM_VOLUME_ALIAS[] indicates for each stream if it uses the volume settings 163 * of another stream: This avoids multiplying the volume settings for hidden 164 * stream types that follow other stream behavior for volume settings 165 * NOTE: do not create loops in aliases! */ 166 private int[] STREAM_VOLUME_ALIAS = new int[] { 167 AudioSystem.STREAM_VOICE_CALL, // STREAM_VOICE_CALL 168 AudioSystem.STREAM_SYSTEM, // STREAM_SYSTEM 169 AudioSystem.STREAM_RING, // STREAM_RING 170 AudioSystem.STREAM_MUSIC, // STREAM_MUSIC 171 AudioSystem.STREAM_ALARM, // STREAM_ALARM 172 AudioSystem.STREAM_NOTIFICATION, // STREAM_NOTIFICATION 173 AudioSystem.STREAM_BLUETOOTH_SCO, // STREAM_BLUETOOTH_SCO 174 AudioSystem.STREAM_SYSTEM, // STREAM_SYSTEM_ENFORCED 175 AudioSystem.STREAM_VOICE_CALL, // STREAM_DTMF 176 AudioSystem.STREAM_MUSIC // STREAM_TTS 177 }; 178 179 private AudioSystem.ErrorCallback mAudioSystemCallback = new AudioSystem.ErrorCallback() { 180 public void onError(int error) { 181 switch (error) { 182 case AudioSystem.AUDIO_STATUS_SERVER_DIED: 183 if (mMediaServerOk) { 184 sendMsg(mAudioHandler, MSG_MEDIA_SERVER_DIED, SHARED_MSG, SENDMSG_NOOP, 0, 0, 185 null, 1500); 186 mMediaServerOk = false; 187 } 188 break; 189 case AudioSystem.AUDIO_STATUS_OK: 190 if (!mMediaServerOk) { 191 sendMsg(mAudioHandler, MSG_MEDIA_SERVER_STARTED, SHARED_MSG, SENDMSG_NOOP, 0, 0, 192 null, 0); 193 mMediaServerOk = true; 194 } 195 break; 196 default: 197 break; 198 } 199 } 200 }; 201 202 /** 203 * Current ringer mode from one of {@link AudioManager#RINGER_MODE_NORMAL}, 204 * {@link AudioManager#RINGER_MODE_SILENT}, or 205 * {@link AudioManager#RINGER_MODE_VIBRATE}. 206 */ 207 private int mRingerMode; 208 209 /** @see System#MODE_RINGER_STREAMS_AFFECTED */ 210 private int mRingerModeAffectedStreams; 211 212 /** @see System#MUTE_STREAMS_AFFECTED */ 213 private int mMuteAffectedStreams; 214 215 /** 216 * Has multiple bits per vibrate type to indicate the type's vibrate 217 * setting. See {@link #setVibrateSetting(int, int)}. 218 * <p> 219 * NOTE: This is not the final decision of whether vibrate is on/off for the 220 * type since it depends on the ringer mode. See {@link #shouldVibrate(int)}. 221 */ 222 private int mVibrateSetting; 223 224 /** @see System#NOTIFICATIONS_USE_RING_VOLUME */ 225 private int mNotificationsUseRingVolume; 226 227 // Broadcast receiver for device connections intent broadcasts 228 private final BroadcastReceiver mReceiver = new AudioServiceBroadcastReceiver(); 229 230 // Devices currently connected 231 private HashMap <Integer, String> mConnectedDevices = new HashMap <Integer, String>(); 232 233 // Forced device usage for communications 234 private int mForcedUseForComm; 235 236 // List of binder death handlers for setMode() client processes. 237 // The last process to have called setMode() is at the top of the list. 238 private ArrayList <SetModeDeathHandler> mSetModeDeathHandlers = new ArrayList <SetModeDeathHandler>(); 239 240 /////////////////////////////////////////////////////////////////////////// 241 // Construction 242 /////////////////////////////////////////////////////////////////////////// 243 244 /** @hide */ 245 public AudioService(Context context) { 246 mContext = context; 247 mContentResolver = context.getContentResolver(); 248 249 // Intialized volume 250 MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = SystemProperties.getInt( 251 "ro.config.vc_call_vol_steps", 252 MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]); 253 254 mVolumePanel = new VolumePanel(context, this); 255 mSettingsObserver = new SettingsObserver(); 256 mForcedUseForComm = AudioSystem.FORCE_NONE; 257 createAudioSystemThread(); 258 readPersistedSettings(); 259 createStreamStates(); 260 // Call setMode() to initialize mSetModeDeathHandlers 261 mMode = AudioSystem.MODE_INVALID; 262 setMode(AudioSystem.MODE_NORMAL, null); 263 mMediaServerOk = true; 264 AudioSystem.setErrorCallback(mAudioSystemCallback); 265 loadSoundEffects(); 266 267 // Register for device connection intent broadcasts. 268 IntentFilter intentFilter = 269 new IntentFilter(Intent.ACTION_HEADSET_PLUG); 270 intentFilter.addAction(BluetoothA2dp.ACTION_SINK_STATE_CHANGED); 271 intentFilter.addAction(BluetoothHeadset.ACTION_STATE_CHANGED); 272 context.registerReceiver(mReceiver, intentFilter); 273 274 } 275 276 private void createAudioSystemThread() { 277 mAudioSystemThread = new AudioSystemThread(); 278 mAudioSystemThread.start(); 279 waitForAudioHandlerCreation(); 280 } 281 282 /** Waits for the volume handler to be created by the other thread. */ 283 private void waitForAudioHandlerCreation() { 284 synchronized(this) { 285 while (mAudioHandler == null) { 286 try { 287 // Wait for mAudioHandler to be set by the other thread 288 wait(); 289 } catch (InterruptedException e) { 290 Log.e(TAG, "Interrupted while waiting on volume handler."); 291 } 292 } 293 } 294 } 295 296 private void createStreamStates() { 297 int numStreamTypes = AudioSystem.getNumStreamTypes(); 298 VolumeStreamState[] streams = mStreamStates = new VolumeStreamState[numStreamTypes]; 299 300 for (int i = 0; i < numStreamTypes; i++) { 301 streams[i] = new VolumeStreamState(System.VOLUME_SETTINGS[STREAM_VOLUME_ALIAS[i]], i); 302 } 303 304 // Correct stream index values for streams with aliases 305 for (int i = 0; i < numStreamTypes; i++) { 306 if (STREAM_VOLUME_ALIAS[i] != i) { 307 int index = rescaleIndex(streams[i].mIndex, STREAM_VOLUME_ALIAS[i], i); 308 streams[i].mIndex = streams[i].getValidIndex(index); 309 setStreamVolumeIndex(i, index); 310 index = rescaleIndex(streams[i].mLastAudibleIndex, STREAM_VOLUME_ALIAS[i], i); 311 streams[i].mLastAudibleIndex = streams[i].getValidIndex(index); 312 } 313 } 314 } 315 316 private void readPersistedSettings() { 317 final ContentResolver cr = mContentResolver; 318 319 mRingerMode = System.getInt(cr, System.MODE_RINGER, AudioManager.RINGER_MODE_NORMAL); 320 321 mVibrateSetting = System.getInt(cr, System.VIBRATE_ON, 0); 322 323 mRingerModeAffectedStreams = Settings.System.getInt(cr, 324 Settings.System.MODE_RINGER_STREAMS_AFFECTED, 325 ((1 << AudioSystem.STREAM_RING)|(1 << AudioSystem.STREAM_NOTIFICATION)| 326 (1 << AudioSystem.STREAM_SYSTEM)|(1 << AudioSystem.STREAM_SYSTEM_ENFORCED))); 327 328 mMuteAffectedStreams = System.getInt(cr, 329 System.MUTE_STREAMS_AFFECTED, 330 ((1 << AudioSystem.STREAM_MUSIC)|(1 << AudioSystem.STREAM_RING)|(1 << AudioSystem.STREAM_SYSTEM))); 331 332 mNotificationsUseRingVolume = System.getInt(cr, 333 Settings.System.NOTIFICATIONS_USE_RING_VOLUME, 1); 334 335 if (mNotificationsUseRingVolume == 1) { 336 STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_RING; 337 } 338 // Each stream will read its own persisted settings 339 340 // Broadcast the sticky intent 341 broadcastRingerMode(); 342 343 // Broadcast vibrate settings 344 broadcastVibrateSetting(AudioManager.VIBRATE_TYPE_RINGER); 345 broadcastVibrateSetting(AudioManager.VIBRATE_TYPE_NOTIFICATION); 346 } 347 348 private void setStreamVolumeIndex(int stream, int index) { 349 AudioSystem.setStreamVolumeIndex(stream, (index + 5)/10); 350 } 351 352 private int rescaleIndex(int index, int srcStream, int dstStream) { 353 return (index * mStreamStates[dstStream].getMaxIndex() + mStreamStates[srcStream].getMaxIndex() / 2) / mStreamStates[srcStream].getMaxIndex(); 354 } 355 356 /////////////////////////////////////////////////////////////////////////// 357 // IPC methods 358 /////////////////////////////////////////////////////////////////////////// 359 360 /** @see AudioManager#adjustVolume(int, int) */ 361 public void adjustVolume(int direction, int flags) { 362 adjustSuggestedStreamVolume(direction, AudioManager.USE_DEFAULT_STREAM_TYPE, flags); 363 } 364 365 /** @see AudioManager#adjustVolume(int, int, int) */ 366 public void adjustSuggestedStreamVolume(int direction, int suggestedStreamType, int flags) { 367 368 int streamType = getActiveStreamType(suggestedStreamType); 369 370 // Don't play sound on other streams 371 if (streamType != AudioSystem.STREAM_RING && (flags & AudioManager.FLAG_PLAY_SOUND) != 0) { 372 flags &= ~AudioManager.FLAG_PLAY_SOUND; 373 } 374 375 adjustStreamVolume(streamType, direction, flags); 376 } 377 378 /** @see AudioManager#adjustStreamVolume(int, int, int) */ 379 public void adjustStreamVolume(int streamType, int direction, int flags) { 380 ensureValidDirection(direction); 381 ensureValidStreamType(streamType); 382 383 384 VolumeStreamState streamState = mStreamStates[STREAM_VOLUME_ALIAS[streamType]]; 385 final int oldIndex = streamState.mIndex; 386 boolean adjustVolume = true; 387 388 // If either the client forces allowing ringer modes for this adjustment, 389 // or the stream type is one that is affected by ringer modes 390 if ((flags & AudioManager.FLAG_ALLOW_RINGER_MODES) != 0 391 || streamType == AudioSystem.STREAM_RING) { 392 // Check if the ringer mode changes with this volume adjustment. If 393 // it does, it will handle adjusting the volume, so we won't below 394 adjustVolume = checkForRingerModeChange(oldIndex, direction); 395 } 396 397 if (adjustVolume && streamState.adjustIndex(direction)) { 398 // Post message to set system volume (it in turn will post a message 399 // to persist). Do not change volume if stream is muted. 400 if (streamState.muteCount() == 0) { 401 sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, STREAM_VOLUME_ALIAS[streamType], SENDMSG_NOOP, 0, 0, 402 streamState, 0); 403 } 404 } 405 406 // UI 407 mVolumePanel.postVolumeChanged(streamType, flags); 408 // Broadcast Intent 409 sendVolumeUpdate(streamType, oldIndex, streamState.mIndex); 410 } 411 412 /** @see AudioManager#setStreamVolume(int, int, int) */ 413 public void setStreamVolume(int streamType, int index, int flags) { 414 ensureValidStreamType(streamType); 415 416 final int oldIndex = mStreamStates[STREAM_VOLUME_ALIAS[streamType]].mIndex; 417 418 index = rescaleIndex(index * 10, streamType, STREAM_VOLUME_ALIAS[streamType]); 419 setStreamVolumeInt(STREAM_VOLUME_ALIAS[streamType], index, false, true); 420 421 // UI, etc. 422 mVolumePanel.postVolumeChanged(streamType, flags); 423 // Broadcast Intent 424 sendVolumeUpdate(streamType, oldIndex, index); 425 } 426 427 private void sendVolumeUpdate(int streamType, int oldIndex, int index) { 428 oldIndex = (oldIndex + 5) / 10; 429 index = (index + 5) / 10; 430 431 Intent intent = new Intent(AudioManager.VOLUME_CHANGED_ACTION); 432 intent.putExtra(AudioManager.EXTRA_VOLUME_STREAM_TYPE, streamType); 433 intent.putExtra(AudioManager.EXTRA_VOLUME_STREAM_VALUE, index); 434 intent.putExtra(AudioManager.EXTRA_PREV_VOLUME_STREAM_VALUE, oldIndex); 435 436 mContext.sendBroadcast(intent); 437 } 438 439 /** 440 * Sets the stream state's index, and posts a message to set system volume. 441 * This will not call out to the UI. Assumes a valid stream type. 442 * 443 * @param streamType Type of the stream 444 * @param index Desired volume index of the stream 445 * @param force If true, set the volume even if the desired volume is same 446 * as the current volume. 447 * @param lastAudible If true, stores new index as last audible one 448 */ 449 private void setStreamVolumeInt(int streamType, int index, boolean force, boolean lastAudible) { 450 VolumeStreamState streamState = mStreamStates[streamType]; 451 if (streamState.setIndex(index, lastAudible) || force) { 452 // Post message to set system volume (it in turn will post a message 453 // to persist). Do not change volume if stream is muted. 454 if (streamState.muteCount() == 0) { 455 sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, streamType, SENDMSG_NOOP, 0, 0, 456 streamState, 0); 457 } 458 } 459 } 460 461 /** @see AudioManager#setStreamSolo(int, boolean) */ 462 public void setStreamSolo(int streamType, boolean state, IBinder cb) { 463 for (int stream = 0; stream < mStreamStates.length; stream++) { 464 if (!isStreamAffectedByMute(stream) || stream == streamType) continue; 465 // Bring back last audible volume 466 mStreamStates[stream].mute(cb, state); 467 } 468 } 469 470 /** @see AudioManager#setStreamMute(int, boolean) */ 471 public void setStreamMute(int streamType, boolean state, IBinder cb) { 472 if (isStreamAffectedByMute(streamType)) { 473 mStreamStates[streamType].mute(cb, state); 474 } 475 } 476 477 /** @see AudioManager#getStreamVolume(int) */ 478 public int getStreamVolume(int streamType) { 479 ensureValidStreamType(streamType); 480 return (mStreamStates[streamType].mIndex + 5) / 10; 481 } 482 483 /** @see AudioManager#getStreamMaxVolume(int) */ 484 public int getStreamMaxVolume(int streamType) { 485 ensureValidStreamType(streamType); 486 return (mStreamStates[streamType].getMaxIndex() + 5) / 10; 487 } 488 489 /** @see AudioManager#getRingerMode() */ 490 public int getRingerMode() { 491 return mRingerMode; 492 } 493 494 /** @see AudioManager#setRingerMode(int) */ 495 public void setRingerMode(int ringerMode) { 496 synchronized (mSettingsLock) { 497 if (ringerMode != mRingerMode) { 498 setRingerModeInt(ringerMode, true); 499 // Send sticky broadcast 500 broadcastRingerMode(); 501 } 502 } 503 } 504 505 private void setRingerModeInt(int ringerMode, boolean persist) { 506 mRingerMode = ringerMode; 507 508 // Adjust volumes via posting message 509 int numStreamTypes = AudioSystem.getNumStreamTypes(); 510 if (mRingerMode == AudioManager.RINGER_MODE_NORMAL) { 511 for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) { 512 if (!isStreamAffectedByRingerMode(streamType)) continue; 513 // Bring back last audible volume 514 setStreamVolumeInt(streamType, mStreamStates[streamType].mLastAudibleIndex, 515 false, false); 516 } 517 } else { 518 for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) { 519 if (isStreamAffectedByRingerMode(streamType)) { 520 // Either silent or vibrate, either way volume is 0 521 setStreamVolumeInt(streamType, 0, false, false); 522 } else { 523 // restore stream volume in the case the stream changed from affected 524 // to non affected by ringer mode. Does not arm to do it for streams that 525 // are not affected as well. 526 setStreamVolumeInt(streamType, mStreamStates[streamType].mLastAudibleIndex, 527 false, false); 528 } 529 } 530 } 531 532 // Post a persist ringer mode msg 533 if (persist) { 534 sendMsg(mAudioHandler, MSG_PERSIST_RINGER_MODE, SHARED_MSG, 535 SENDMSG_REPLACE, 0, 0, null, PERSIST_DELAY); 536 } 537 } 538 539 /** @see AudioManager#shouldVibrate(int) */ 540 public boolean shouldVibrate(int vibrateType) { 541 542 switch (getVibrateSetting(vibrateType)) { 543 544 case AudioManager.VIBRATE_SETTING_ON: 545 return mRingerMode != AudioManager.RINGER_MODE_SILENT; 546 547 case AudioManager.VIBRATE_SETTING_ONLY_SILENT: 548 return mRingerMode == AudioManager.RINGER_MODE_VIBRATE; 549 550 case AudioManager.VIBRATE_SETTING_OFF: 551 // Phone ringer should always vibrate in vibrate mode 552 if (vibrateType == AudioManager.VIBRATE_TYPE_RINGER) { 553 return mRingerMode == AudioManager.RINGER_MODE_VIBRATE; 554 } 555 556 default: 557 return false; 558 } 559 } 560 561 /** @see AudioManager#getVibrateSetting(int) */ 562 public int getVibrateSetting(int vibrateType) { 563 return (mVibrateSetting >> (vibrateType * 2)) & 3; 564 } 565 566 /** @see AudioManager#setVibrateSetting(int, int) */ 567 public void setVibrateSetting(int vibrateType, int vibrateSetting) { 568 569 mVibrateSetting = getValueForVibrateSetting(mVibrateSetting, vibrateType, vibrateSetting); 570 571 // Broadcast change 572 broadcastVibrateSetting(vibrateType); 573 574 // Post message to set ringer mode (it in turn will post a message 575 // to persist) 576 sendMsg(mAudioHandler, MSG_PERSIST_VIBRATE_SETTING, SHARED_MSG, SENDMSG_NOOP, 0, 0, 577 null, 0); 578 } 579 580 /** 581 * @see #setVibrateSetting(int, int) 582 */ 583 public static int getValueForVibrateSetting(int existingValue, int vibrateType, 584 int vibrateSetting) { 585 586 // First clear the existing setting. Each vibrate type has two bits in 587 // the value. Note '3' is '11' in binary. 588 existingValue &= ~(3 << (vibrateType * 2)); 589 590 // Set into the old value 591 existingValue |= (vibrateSetting & 3) << (vibrateType * 2); 592 593 return existingValue; 594 } 595 596 private class SetModeDeathHandler implements IBinder.DeathRecipient { 597 private IBinder mCb; // To be notified of client's death 598 private int mMode = AudioSystem.MODE_NORMAL; // Current mode set by this client 599 600 SetModeDeathHandler(IBinder cb) { 601 mCb = cb; 602 } 603 604 public void binderDied() { 605 synchronized(mSetModeDeathHandlers) { 606 Log.w(TAG, "setMode() client died"); 607 int index = mSetModeDeathHandlers.indexOf(this); 608 if (index < 0) { 609 Log.w(TAG, "unregistered setMode() client died"); 610 } else { 611 mSetModeDeathHandlers.remove(this); 612 // If dead client was a the top of client list, 613 // apply next mode in the stack 614 if (index == 0) { 615 // mSetModeDeathHandlers is never empty as the initial entry 616 // created when AudioService starts is never removed 617 SetModeDeathHandler hdlr = mSetModeDeathHandlers.get(0); 618 int mode = hdlr.getMode(); 619 if (AudioService.this.mMode != mode) { 620 if (AudioSystem.setPhoneState(mode) == AudioSystem.AUDIO_STATUS_OK) { 621 AudioService.this.mMode = mode; 622 } 623 } 624 } 625 } 626 } 627 } 628 629 public void setMode(int mode) { 630 mMode = mode; 631 } 632 633 public int getMode() { 634 return mMode; 635 } 636 637 public IBinder getBinder() { 638 return mCb; 639 } 640 } 641 642 /** @see AudioManager#setMode(int) */ 643 public void setMode(int mode, IBinder cb) { 644 if (!checkAudioSettingsPermission("setMode()")) { 645 return; 646 } 647 648 if (mode < AudioSystem.MODE_CURRENT || mode > AudioSystem.MODE_IN_CALL) { 649 return; 650 } 651 652 synchronized (mSettingsLock) { 653 if (mode == AudioSystem.MODE_CURRENT) { 654 mode = mMode; 655 } 656 if (mode != mMode) { 657 if (AudioSystem.setPhoneState(mode) == AudioSystem.AUDIO_STATUS_OK) { 658 mMode = mode; 659 660 synchronized(mSetModeDeathHandlers) { 661 SetModeDeathHandler hdlr = null; 662 Iterator iter = mSetModeDeathHandlers.iterator(); 663 while (iter.hasNext()) { 664 SetModeDeathHandler h = (SetModeDeathHandler)iter.next(); 665 if (h.getBinder() == cb) { 666 hdlr = h; 667 // Remove from client list so that it is re-inserted at top of list 668 iter.remove(); 669 break; 670 } 671 } 672 if (hdlr == null) { 673 hdlr = new SetModeDeathHandler(cb); 674 // cb is null when setMode() is called by AudioService constructor 675 if (cb != null) { 676 // Register for client death notification 677 try { 678 cb.linkToDeath(hdlr, 0); 679 } catch (RemoteException e) { 680 // Client has died! 681 Log.w(TAG, "setMode() could not link to "+cb+" binder death"); 682 } 683 } 684 } 685 // Last client to call setMode() is always at top of client list 686 // as required by SetModeDeathHandler.binderDied() 687 mSetModeDeathHandlers.add(0, hdlr); 688 hdlr.setMode(mode); 689 } 690 } 691 } 692 int streamType = getActiveStreamType(AudioManager.USE_DEFAULT_STREAM_TYPE); 693 int index = mStreamStates[STREAM_VOLUME_ALIAS[streamType]].mIndex; 694 setStreamVolumeInt(STREAM_VOLUME_ALIAS[streamType], index, true, true); 695 } 696 } 697 698 /** @see AudioManager#getMode() */ 699 public int getMode() { 700 return mMode; 701 } 702 703 /** @see AudioManager#playSoundEffect(int) */ 704 public void playSoundEffect(int effectType) { 705 sendMsg(mAudioHandler, MSG_PLAY_SOUND_EFFECT, SHARED_MSG, SENDMSG_NOOP, 706 effectType, -1, null, 0); 707 } 708 709 /** @see AudioManager#playSoundEffect(int, float) */ 710 public void playSoundEffectVolume(int effectType, float volume) { 711 loadSoundEffects(); 712 sendMsg(mAudioHandler, MSG_PLAY_SOUND_EFFECT, SHARED_MSG, SENDMSG_NOOP, 713 effectType, (int) (volume * 1000), null, 0); 714 } 715 716 /** 717 * Loads samples into the soundpool. 718 * This method must be called at when sound effects are enabled 719 */ 720 public boolean loadSoundEffects() { 721 synchronized (mSoundEffectsLock) { 722 if (mSoundPool != null) { 723 return true; 724 } 725 mSoundPool = new SoundPool(NUM_SOUNDPOOL_CHANNELS, AudioSystem.STREAM_SYSTEM, 0); 726 if (mSoundPool == null) { 727 return false; 728 } 729 /* 730 * poolId table: The value -1 in this table indicates that corresponding 731 * file (same index in SOUND_EFFECT_FILES[] has not been loaded. 732 * Once loaded, the value in poolId is the sample ID and the same 733 * sample can be reused for another effect using the same file. 734 */ 735 int[] poolId = new int[SOUND_EFFECT_FILES.length]; 736 for (int fileIdx = 0; fileIdx < SOUND_EFFECT_FILES.length; fileIdx++) { 737 poolId[fileIdx] = -1; 738 } 739 /* 740 * Effects whose value in SOUND_EFFECT_FILES_MAP[effect][1] is -1 must be loaded. 741 * If load succeeds, value in SOUND_EFFECT_FILES_MAP[effect][1] is > 0: 742 * this indicates we have a valid sample loaded for this effect. 743 */ 744 for (int effect = 0; effect < AudioManager.NUM_SOUND_EFFECTS; effect++) { 745 // Do not load sample if this effect uses the MediaPlayer 746 if (SOUND_EFFECT_FILES_MAP[effect][1] == 0) { 747 continue; 748 } 749 if (poolId[SOUND_EFFECT_FILES_MAP[effect][0]] == -1) { 750 String filePath = Environment.getRootDirectory() + SOUND_EFFECTS_PATH + SOUND_EFFECT_FILES[SOUND_EFFECT_FILES_MAP[effect][0]]; 751 int sampleId = mSoundPool.load(filePath, 0); 752 SOUND_EFFECT_FILES_MAP[effect][1] = sampleId; 753 poolId[SOUND_EFFECT_FILES_MAP[effect][0]] = sampleId; 754 if (sampleId <= 0) { 755 Log.w(TAG, "Soundpool could not load file: "+filePath); 756 } 757 } else { 758 SOUND_EFFECT_FILES_MAP[effect][1] = poolId[SOUND_EFFECT_FILES_MAP[effect][0]]; 759 } 760 } 761 } 762 763 return true; 764 } 765 766 /** 767 * Unloads samples from the sound pool. 768 * This method can be called to free some memory when 769 * sound effects are disabled. 770 */ 771 public void unloadSoundEffects() { 772 synchronized (mSoundEffectsLock) { 773 if (mSoundPool == null) { 774 return; 775 } 776 int[] poolId = new int[SOUND_EFFECT_FILES.length]; 777 for (int fileIdx = 0; fileIdx < SOUND_EFFECT_FILES.length; fileIdx++) { 778 poolId[fileIdx] = 0; 779 } 780 781 for (int effect = 0; effect < AudioManager.NUM_SOUND_EFFECTS; effect++) { 782 if (SOUND_EFFECT_FILES_MAP[effect][1] <= 0) { 783 continue; 784 } 785 if (poolId[SOUND_EFFECT_FILES_MAP[effect][0]] == 0) { 786 mSoundPool.unload(SOUND_EFFECT_FILES_MAP[effect][1]); 787 SOUND_EFFECT_FILES_MAP[effect][1] = -1; 788 poolId[SOUND_EFFECT_FILES_MAP[effect][0]] = -1; 789 } 790 } 791 mSoundPool = null; 792 } 793 } 794 795 /** @see AudioManager#reloadAudioSettings() */ 796 public void reloadAudioSettings() { 797 // restore ringer mode, ringer mode affected streams, mute affected streams and vibrate settings 798 readPersistedSettings(); 799 800 // restore volume settings 801 int numStreamTypes = AudioSystem.getNumStreamTypes(); 802 for (int streamType = 0; streamType < numStreamTypes; streamType++) { 803 VolumeStreamState streamState = mStreamStates[streamType]; 804 805 String settingName = System.VOLUME_SETTINGS[STREAM_VOLUME_ALIAS[streamType]]; 806 String lastAudibleSettingName = settingName + System.APPEND_FOR_LAST_AUDIBLE; 807 int index = Settings.System.getInt(mContentResolver, 808 settingName, 809 AudioManager.DEFAULT_STREAM_VOLUME[streamType]); 810 if (STREAM_VOLUME_ALIAS[streamType] != streamType) { 811 index = rescaleIndex(index * 10, STREAM_VOLUME_ALIAS[streamType], streamType); 812 } else { 813 index *= 10; 814 } 815 streamState.mIndex = streamState.getValidIndex(index); 816 817 index = (index + 5) / 10; 818 index = Settings.System.getInt(mContentResolver, 819 lastAudibleSettingName, 820 (index > 0) ? index : AudioManager.DEFAULT_STREAM_VOLUME[streamType]); 821 if (STREAM_VOLUME_ALIAS[streamType] != streamType) { 822 index = rescaleIndex(index * 10, STREAM_VOLUME_ALIAS[streamType], streamType); 823 } else { 824 index *= 10; 825 } 826 streamState.mLastAudibleIndex = streamState.getValidIndex(index); 827 828 // unmute stream that whas muted but is not affect by mute anymore 829 if (streamState.muteCount() != 0 && !isStreamAffectedByMute(streamType)) { 830 int size = streamState.mDeathHandlers.size(); 831 for (int i = 0; i < size; i++) { 832 streamState.mDeathHandlers.get(i).mMuteCount = 1; 833 streamState.mDeathHandlers.get(i).mute(false); 834 } 835 } 836 // apply stream volume 837 if (streamState.muteCount() == 0) { 838 setStreamVolumeIndex(streamType, streamState.mIndex); 839 } 840 } 841 842 // apply new ringer mode 843 setRingerModeInt(getRingerMode(), false); 844 } 845 846 /** @see AudioManager#setSpeakerphoneOn() */ 847 public void setSpeakerphoneOn(boolean on){ 848 if (!checkAudioSettingsPermission("setSpeakerphoneOn()")) { 849 return; 850 } 851 if (on) { 852 AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_SPEAKER); 853 mForcedUseForComm = AudioSystem.FORCE_SPEAKER; 854 } else { 855 AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_NONE); 856 mForcedUseForComm = AudioSystem.FORCE_NONE; 857 } 858 } 859 860 /** @see AudioManager#isSpeakerphoneOn() */ 861 public boolean isSpeakerphoneOn() { 862 if (mForcedUseForComm == AudioSystem.FORCE_SPEAKER) { 863 return true; 864 } else { 865 return false; 866 } 867 } 868 869 /** @see AudioManager#setBluetoothScoOn() */ 870 public void setBluetoothScoOn(boolean on){ 871 if (!checkAudioSettingsPermission("setBluetoothScoOn()")) { 872 return; 873 } 874 if (on) { 875 AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_BT_SCO); 876 AudioSystem.setForceUse(AudioSystem.FOR_RECORD, AudioSystem.FORCE_BT_SCO); 877 mForcedUseForComm = AudioSystem.FORCE_BT_SCO; 878 } else { 879 AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_NONE); 880 AudioSystem.setForceUse(AudioSystem.FOR_RECORD, AudioSystem.FORCE_NONE); 881 mForcedUseForComm = AudioSystem.FORCE_NONE; 882 } 883 } 884 885 /** @see AudioManager#isBluetoothScoOn() */ 886 public boolean isBluetoothScoOn() { 887 if (mForcedUseForComm == AudioSystem.FORCE_BT_SCO) { 888 return true; 889 } else { 890 return false; 891 } 892 } 893 894 895 /////////////////////////////////////////////////////////////////////////// 896 // Internal methods 897 /////////////////////////////////////////////////////////////////////////// 898 899 /** 900 * Checks if the adjustment should change ringer mode instead of just 901 * adjusting volume. If so, this will set the proper ringer mode and volume 902 * indices on the stream states. 903 */ 904 private boolean checkForRingerModeChange(int oldIndex, int direction) { 905 boolean adjustVolumeIndex = true; 906 int newRingerMode = mRingerMode; 907 908 if (mRingerMode == AudioManager.RINGER_MODE_NORMAL) { 909 // audible mode, at the bottom of the scale 910 if (direction == AudioManager.ADJUST_LOWER 911 && (oldIndex + 5) / 10 == 1) { 912 // "silent mode", but which one? 913 newRingerMode = System.getInt(mContentResolver, System.VIBRATE_IN_SILENT, 1) == 1 914 ? AudioManager.RINGER_MODE_VIBRATE 915 : AudioManager.RINGER_MODE_SILENT; 916 } 917 } else { 918 if (direction == AudioManager.ADJUST_RAISE) { 919 // exiting silent mode 920 newRingerMode = AudioManager.RINGER_MODE_NORMAL; 921 } 922 } 923 924 if (newRingerMode != mRingerMode) { 925 setRingerMode(newRingerMode); 926 927 /* 928 * If we are changing ringer modes, do not increment/decrement the 929 * volume index. Instead, the handler for the message above will 930 * take care of changing the index. 931 */ 932 adjustVolumeIndex = false; 933 } 934 935 return adjustVolumeIndex; 936 } 937 938 public boolean isStreamAffectedByRingerMode(int streamType) { 939 return (mRingerModeAffectedStreams & (1 << streamType)) != 0; 940 } 941 942 public boolean isStreamAffectedByMute(int streamType) { 943 return (mMuteAffectedStreams & (1 << streamType)) != 0; 944 } 945 946 private void ensureValidDirection(int direction) { 947 if (direction < AudioManager.ADJUST_LOWER || direction > AudioManager.ADJUST_RAISE) { 948 throw new IllegalArgumentException("Bad direction " + direction); 949 } 950 } 951 952 private void ensureValidStreamType(int streamType) { 953 if (streamType < 0 || streamType >= mStreamStates.length) { 954 throw new IllegalArgumentException("Bad stream type " + streamType); 955 } 956 } 957 958 private int getActiveStreamType(int suggestedStreamType) { 959 boolean isOffhook = false; 960 try { 961 ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.checkService("phone")); 962 if (phone != null) isOffhook = phone.isOffhook(); 963 } catch (RemoteException e) { 964 Log.w(TAG, "Couldn't connect to phone service", e); 965 } 966 967 if (AudioSystem.getForceUse(AudioSystem.FOR_COMMUNICATION) == AudioSystem.FORCE_BT_SCO) { 968 // Log.v(TAG, "getActiveStreamType: Forcing STREAM_BLUETOOTH_SCO..."); 969 return AudioSystem.STREAM_BLUETOOTH_SCO; 970 } else if (isOffhook || AudioSystem.isStreamActive(AudioSystem.STREAM_VOICE_CALL)) { 971 // Log.v(TAG, "getActiveStreamType: Forcing STREAM_VOICE_CALL..."); 972 return AudioSystem.STREAM_VOICE_CALL; 973 } else if (AudioSystem.isStreamActive(AudioSystem.STREAM_MUSIC)) { 974 // Log.v(TAG, "getActiveStreamType: Forcing STREAM_MUSIC..."); 975 return AudioSystem.STREAM_MUSIC; 976 } else if (suggestedStreamType == AudioManager.USE_DEFAULT_STREAM_TYPE) { 977 // Log.v(TAG, "getActiveStreamType: Forcing STREAM_RING..."); 978 return AudioSystem.STREAM_RING; 979 } else { 980 // Log.v(TAG, "getActiveStreamType: Returning suggested type " + suggestedStreamType); 981 return suggestedStreamType; 982 } 983 } 984 985 private void broadcastRingerMode() { 986 // Send sticky broadcast 987 Intent broadcast = new Intent(AudioManager.RINGER_MODE_CHANGED_ACTION); 988 broadcast.putExtra(AudioManager.EXTRA_RINGER_MODE, mRingerMode); 989 broadcast.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT 990 | Intent.FLAG_RECEIVER_REPLACE_PENDING); 991 long origCallerIdentityToken = Binder.clearCallingIdentity(); 992 mContext.sendStickyBroadcast(broadcast); 993 Binder.restoreCallingIdentity(origCallerIdentityToken); 994 } 995 996 private void broadcastVibrateSetting(int vibrateType) { 997 // Send broadcast 998 if (ActivityManagerNative.isSystemReady()) { 999 Intent broadcast = new Intent(AudioManager.VIBRATE_SETTING_CHANGED_ACTION); 1000 broadcast.putExtra(AudioManager.EXTRA_VIBRATE_TYPE, vibrateType); 1001 broadcast.putExtra(AudioManager.EXTRA_VIBRATE_SETTING, getVibrateSetting(vibrateType)); 1002 mContext.sendBroadcast(broadcast); 1003 } 1004 } 1005 1006 // Message helper methods 1007 private static int getMsg(int baseMsg, int streamType) { 1008 return (baseMsg & 0xffff) | streamType << 16; 1009 } 1010 1011 private static int getMsgBase(int msg) { 1012 return msg & 0xffff; 1013 } 1014 1015 private static void sendMsg(Handler handler, int baseMsg, int streamType, 1016 int existingMsgPolicy, int arg1, int arg2, Object obj, int delay) { 1017 int msg = (streamType == SHARED_MSG) ? baseMsg : getMsg(baseMsg, streamType); 1018 1019 if (existingMsgPolicy == SENDMSG_REPLACE) { 1020 handler.removeMessages(msg); 1021 } else if (existingMsgPolicy == SENDMSG_NOOP && handler.hasMessages(msg)) { 1022 return; 1023 } 1024 1025 handler 1026 .sendMessageDelayed(handler.obtainMessage(msg, arg1, arg2, obj), delay); 1027 } 1028 1029 boolean checkAudioSettingsPermission(String method) { 1030 if (mContext.checkCallingOrSelfPermission("android.permission.MODIFY_AUDIO_SETTINGS") 1031 == PackageManager.PERMISSION_GRANTED) { 1032 return true; 1033 } 1034 String msg = "Audio Settings Permission Denial: " + method + " from pid=" 1035 + Binder.getCallingPid() 1036 + ", uid=" + Binder.getCallingUid(); 1037 Log.w(TAG, msg); 1038 return false; 1039 } 1040 1041 1042 /////////////////////////////////////////////////////////////////////////// 1043 // Inner classes 1044 /////////////////////////////////////////////////////////////////////////// 1045 1046 public class VolumeStreamState { 1047 private final int mStreamType; 1048 1049 private String mVolumeIndexSettingName; 1050 private String mLastAudibleVolumeIndexSettingName; 1051 private int mIndexMax; 1052 private int mIndex; 1053 private int mLastAudibleIndex; 1054 private ArrayList<VolumeDeathHandler> mDeathHandlers; //handles mute/solo requests client death 1055 1056 private VolumeStreamState(String settingName, int streamType) { 1057 1058 setVolumeIndexSettingName(settingName); 1059 1060 mStreamType = streamType; 1061 1062 final ContentResolver cr = mContentResolver; 1063 mIndexMax = MAX_STREAM_VOLUME[streamType]; 1064 mIndex = Settings.System.getInt(cr, 1065 mVolumeIndexSettingName, 1066 AudioManager.DEFAULT_STREAM_VOLUME[streamType]); 1067 mLastAudibleIndex = Settings.System.getInt(cr, 1068 mLastAudibleVolumeIndexSettingName, 1069 (mIndex > 0) ? mIndex : AudioManager.DEFAULT_STREAM_VOLUME[streamType]); 1070 AudioSystem.initStreamVolume(streamType, 0, mIndexMax); 1071 mIndexMax *= 10; 1072 mIndex = getValidIndex(10 * mIndex); 1073 mLastAudibleIndex = getValidIndex(10 * mLastAudibleIndex); 1074 setStreamVolumeIndex(streamType, mIndex); 1075 mDeathHandlers = new ArrayList<VolumeDeathHandler>(); 1076 } 1077 1078 public void setVolumeIndexSettingName(String settingName) { 1079 mVolumeIndexSettingName = settingName; 1080 mLastAudibleVolumeIndexSettingName = settingName + System.APPEND_FOR_LAST_AUDIBLE; 1081 } 1082 1083 public boolean adjustIndex(int deltaIndex) { 1084 return setIndex(mIndex + deltaIndex * 10, true); 1085 } 1086 1087 public boolean setIndex(int index, boolean lastAudible) { 1088 int oldIndex = mIndex; 1089 mIndex = getValidIndex(index); 1090 1091 if (oldIndex != mIndex) { 1092 if (lastAudible) { 1093 mLastAudibleIndex = mIndex; 1094 } 1095 // Apply change to all streams using this one as alias 1096 int numStreamTypes = AudioSystem.getNumStreamTypes(); 1097 for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) { 1098 if (streamType != mStreamType && STREAM_VOLUME_ALIAS[streamType] == mStreamType) { 1099 mStreamStates[streamType].setIndex(rescaleIndex(mIndex, mStreamType, streamType), lastAudible); 1100 } 1101 } 1102 return true; 1103 } else { 1104 return false; 1105 } 1106 } 1107 1108 public int getMaxIndex() { 1109 return mIndexMax; 1110 } 1111 1112 public void mute(IBinder cb, boolean state) { 1113 VolumeDeathHandler handler = getDeathHandler(cb, state); 1114 if (handler == null) { 1115 Log.e(TAG, "Could not get client death handler for stream: "+mStreamType); 1116 return; 1117 } 1118 handler.mute(state); 1119 } 1120 1121 private int getValidIndex(int index) { 1122 if (index < 0) { 1123 return 0; 1124 } else if (index > mIndexMax) { 1125 return mIndexMax; 1126 } 1127 1128 return index; 1129 } 1130 1131 private class VolumeDeathHandler implements IBinder.DeathRecipient { 1132 private IBinder mICallback; // To be notified of client's death 1133 private int mMuteCount; // Number of active mutes for this client 1134 1135 VolumeDeathHandler(IBinder cb) { 1136 mICallback = cb; 1137 } 1138 1139 public void mute(boolean state) { 1140 synchronized(mDeathHandlers) { 1141 if (state) { 1142 if (mMuteCount == 0) { 1143 // Register for client death notification 1144 try { 1145 mICallback.linkToDeath(this, 0); 1146 mDeathHandlers.add(this); 1147 // If the stream is not yet muted by any client, set lvel to 0 1148 if (muteCount() == 0) { 1149 setIndex(0, false); 1150 sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, mStreamType, SENDMSG_NOOP, 0, 0, 1151 VolumeStreamState.this, 0); 1152 } 1153 } catch (RemoteException e) { 1154 // Client has died! 1155 binderDied(); 1156 mDeathHandlers.notify(); 1157 return; 1158 } 1159 } else { 1160 Log.w(TAG, "stream: "+mStreamType+" was already muted by this client"); 1161 } 1162 mMuteCount++; 1163 } else { 1164 if (mMuteCount == 0) { 1165 Log.e(TAG, "unexpected unmute for stream: "+mStreamType); 1166 } else { 1167 mMuteCount--; 1168 if (mMuteCount == 0) { 1169 // Unregistr from client death notification 1170 mDeathHandlers.remove(this); 1171 mICallback.unlinkToDeath(this, 0); 1172 if (muteCount() == 0) { 1173 // If the stream is not mut any more, restore it's volume if 1174 // ringer mode allows it 1175 if (!isStreamAffectedByRingerMode(mStreamType) || mRingerMode == AudioManager.RINGER_MODE_NORMAL) { 1176 setIndex(mLastAudibleIndex, false); 1177 sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, mStreamType, SENDMSG_NOOP, 0, 0, 1178 VolumeStreamState.this, 0); 1179 } 1180 } 1181 } 1182 } 1183 } 1184 mDeathHandlers.notify(); 1185 } 1186 } 1187 1188 public void binderDied() { 1189 Log.w(TAG, "Volume service client died for stream: "+mStreamType); 1190 if (mMuteCount != 0) { 1191 // Reset all active mute requests from this client. 1192 mMuteCount = 1; 1193 mute(false); 1194 } 1195 } 1196 } 1197 1198 private int muteCount() { 1199 int count = 0; 1200 int size = mDeathHandlers.size(); 1201 for (int i = 0; i < size; i++) { 1202 count += mDeathHandlers.get(i).mMuteCount; 1203 } 1204 return count; 1205 } 1206 1207 private VolumeDeathHandler getDeathHandler(IBinder cb, boolean state) { 1208 synchronized(mDeathHandlers) { 1209 VolumeDeathHandler handler; 1210 int size = mDeathHandlers.size(); 1211 for (int i = 0; i < size; i++) { 1212 handler = mDeathHandlers.get(i); 1213 if (cb.equals(handler.mICallback)) { 1214 return handler; 1215 } 1216 } 1217 // If this is the first mute request for this client, create a new 1218 // client death handler. Otherwise, it is an out of sequence unmute request. 1219 if (state) { 1220 handler = new VolumeDeathHandler(cb); 1221 } else { 1222 Log.w(TAG, "stream was not muted by this client"); 1223 handler = null; 1224 } 1225 return handler; 1226 } 1227 } 1228 } 1229 1230 /** Thread that handles native AudioSystem control. */ 1231 private class AudioSystemThread extends Thread { 1232 AudioSystemThread() { 1233 super("AudioService"); 1234 } 1235 1236 @Override 1237 public void run() { 1238 // Set this thread up so the handler will work on it 1239 Looper.prepare(); 1240 1241 synchronized(AudioService.this) { 1242 mAudioHandler = new AudioHandler(); 1243 1244 // Notify that the handler has been created 1245 AudioService.this.notify(); 1246 } 1247 1248 // Listen for volume change requests that are set by VolumePanel 1249 Looper.loop(); 1250 } 1251 } 1252 1253 /** Handles internal volume messages in separate volume thread. */ 1254 private class AudioHandler extends Handler { 1255 1256 private void setSystemVolume(VolumeStreamState streamState) { 1257 1258 // Adjust volume 1259 setStreamVolumeIndex(streamState.mStreamType, streamState.mIndex); 1260 1261 // Apply change to all streams using this one as alias 1262 int numStreamTypes = AudioSystem.getNumStreamTypes(); 1263 for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) { 1264 if (streamType != streamState.mStreamType && 1265 STREAM_VOLUME_ALIAS[streamType] == streamState.mStreamType) { 1266 setStreamVolumeIndex(streamType, mStreamStates[streamType].mIndex); 1267 } 1268 } 1269 1270 // Post a persist volume msg 1271 sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, streamState.mStreamType, 1272 SENDMSG_REPLACE, 0, 0, streamState, PERSIST_DELAY); 1273 } 1274 1275 private void persistVolume(VolumeStreamState streamState) { 1276 System.putInt(mContentResolver, streamState.mVolumeIndexSettingName, 1277 (streamState.mIndex + 5)/ 10); 1278 System.putInt(mContentResolver, streamState.mLastAudibleVolumeIndexSettingName, 1279 (streamState.mLastAudibleIndex + 5) / 10); 1280 } 1281 1282 private void persistRingerMode() { 1283 System.putInt(mContentResolver, System.MODE_RINGER, mRingerMode); 1284 } 1285 1286 private void persistVibrateSetting() { 1287 System.putInt(mContentResolver, System.VIBRATE_ON, mVibrateSetting); 1288 } 1289 1290 private void playSoundEffect(int effectType, int volume) { 1291 synchronized (mSoundEffectsLock) { 1292 if (mSoundPool == null) { 1293 return; 1294 } 1295 float volFloat; 1296 // use STREAM_MUSIC volume attenuated by 3 dB if volume is not specified by caller 1297 if (volume < 0) { 1298 // Same linear to log conversion as in native AudioSystem::linearToLog() (AudioSystem.cpp) 1299 float dBPerStep = (float)((0.5 * 100) / MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]); 1300 int musicVolIndex = (mStreamStates[AudioSystem.STREAM_MUSIC].mIndex + 5) / 10; 1301 float musicVoldB = dBPerStep * (musicVolIndex - MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]); 1302 volFloat = (float)Math.pow(10, (musicVoldB - 3)/20); 1303 } else { 1304 volFloat = (float) volume / 1000.0f; 1305 } 1306 1307 if (SOUND_EFFECT_FILES_MAP[effectType][1] > 0) { 1308 mSoundPool.play(SOUND_EFFECT_FILES_MAP[effectType][1], volFloat, volFloat, 0, 0, 1.0f); 1309 } else { 1310 MediaPlayer mediaPlayer = new MediaPlayer(); 1311 if (mediaPlayer != null) { 1312 try { 1313 String filePath = Environment.getRootDirectory() + SOUND_EFFECTS_PATH + SOUND_EFFECT_FILES[SOUND_EFFECT_FILES_MAP[effectType][0]]; 1314 mediaPlayer.setDataSource(filePath); 1315 mediaPlayer.setAudioStreamType(AudioSystem.STREAM_SYSTEM); 1316 mediaPlayer.prepare(); 1317 mediaPlayer.setVolume(volFloat, volFloat); 1318 mediaPlayer.setOnCompletionListener(new OnCompletionListener() { 1319 public void onCompletion(MediaPlayer mp) { 1320 cleanupPlayer(mp); 1321 } 1322 }); 1323 mediaPlayer.setOnErrorListener(new OnErrorListener() { 1324 public boolean onError(MediaPlayer mp, int what, int extra) { 1325 cleanupPlayer(mp); 1326 return true; 1327 } 1328 }); 1329 mediaPlayer.start(); 1330 } catch (IOException ex) { 1331 Log.w(TAG, "MediaPlayer IOException: "+ex); 1332 } catch (IllegalArgumentException ex) { 1333 Log.w(TAG, "MediaPlayer IllegalArgumentException: "+ex); 1334 } catch (IllegalStateException ex) { 1335 Log.w(TAG, "MediaPlayer IllegalStateException: "+ex); 1336 } 1337 } 1338 } 1339 } 1340 } 1341 1342 private void cleanupPlayer(MediaPlayer mp) { 1343 if (mp != null) { 1344 try { 1345 mp.stop(); 1346 mp.release(); 1347 } catch (IllegalStateException ex) { 1348 Log.w(TAG, "MediaPlayer IllegalStateException: "+ex); 1349 } 1350 } 1351 } 1352 1353 @Override 1354 public void handleMessage(Message msg) { 1355 int baseMsgWhat = getMsgBase(msg.what); 1356 1357 switch (baseMsgWhat) { 1358 1359 case MSG_SET_SYSTEM_VOLUME: 1360 setSystemVolume((VolumeStreamState) msg.obj); 1361 break; 1362 1363 case MSG_PERSIST_VOLUME: 1364 persistVolume((VolumeStreamState) msg.obj); 1365 break; 1366 1367 case MSG_PERSIST_RINGER_MODE: 1368 persistRingerMode(); 1369 break; 1370 1371 case MSG_PERSIST_VIBRATE_SETTING: 1372 persistVibrateSetting(); 1373 break; 1374 1375 case MSG_MEDIA_SERVER_DIED: 1376 // Force creation of new IAudioflinger interface 1377 if (!mMediaServerOk) { 1378 Log.e(TAG, "Media server died."); 1379 AudioSystem.isStreamActive(AudioSystem.STREAM_MUSIC); 1380 sendMsg(mAudioHandler, MSG_MEDIA_SERVER_DIED, SHARED_MSG, SENDMSG_NOOP, 0, 0, 1381 null, 500); 1382 } 1383 break; 1384 1385 case MSG_MEDIA_SERVER_STARTED: 1386 Log.e(TAG, "Media server started."); 1387 // Restore device connection states 1388 Set set = mConnectedDevices.entrySet(); 1389 Iterator i = set.iterator(); 1390 while(i.hasNext()){ 1391 Map.Entry device = (Map.Entry)i.next(); 1392 AudioSystem.setDeviceConnectionState(((Integer)device.getKey()).intValue(), 1393 AudioSystem.DEVICE_STATE_AVAILABLE, 1394 (String)device.getValue()); 1395 } 1396 1397 // Restore call state 1398 AudioSystem.setPhoneState(mMode); 1399 1400 // Restore forced usage for communcations and record 1401 AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, mForcedUseForComm); 1402 AudioSystem.setForceUse(AudioSystem.FOR_RECORD, mForcedUseForComm); 1403 1404 // Restore stream volumes 1405 int numStreamTypes = AudioSystem.getNumStreamTypes(); 1406 for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) { 1407 int index; 1408 VolumeStreamState streamState = mStreamStates[streamType]; 1409 AudioSystem.initStreamVolume(streamType, 0, (streamState.mIndexMax + 5) / 10); 1410 if (streamState.muteCount() == 0) { 1411 index = streamState.mIndex; 1412 } else { 1413 index = 0; 1414 } 1415 setStreamVolumeIndex(streamType, index); 1416 } 1417 1418 // Restore ringer mode 1419 setRingerModeInt(getRingerMode(), false); 1420 break; 1421 1422 case MSG_PLAY_SOUND_EFFECT: 1423 playSoundEffect(msg.arg1, msg.arg2); 1424 break; 1425 } 1426 } 1427 } 1428 1429 private class SettingsObserver extends ContentObserver { 1430 1431 SettingsObserver() { 1432 super(new Handler()); 1433 mContentResolver.registerContentObserver(Settings.System.getUriFor( 1434 Settings.System.MODE_RINGER_STREAMS_AFFECTED), false, this); 1435 mContentResolver.registerContentObserver(Settings.System.getUriFor( 1436 Settings.System.NOTIFICATIONS_USE_RING_VOLUME), false, this); 1437 } 1438 1439 @Override 1440 public void onChange(boolean selfChange) { 1441 super.onChange(selfChange); 1442 synchronized (mSettingsLock) { 1443 int ringerModeAffectedStreams = Settings.System.getInt(mContentResolver, 1444 Settings.System.MODE_RINGER_STREAMS_AFFECTED, 1445 0); 1446 if (ringerModeAffectedStreams != mRingerModeAffectedStreams) { 1447 /* 1448 * Ensure all stream types that should be affected by ringer mode 1449 * are in the proper state. 1450 */ 1451 mRingerModeAffectedStreams = ringerModeAffectedStreams; 1452 setRingerModeInt(getRingerMode(), false); 1453 } 1454 1455 int notificationsUseRingVolume = Settings.System.getInt(mContentResolver, 1456 Settings.System.NOTIFICATIONS_USE_RING_VOLUME, 1457 1); 1458 if (notificationsUseRingVolume != mNotificationsUseRingVolume) { 1459 mNotificationsUseRingVolume = notificationsUseRingVolume; 1460 if (mNotificationsUseRingVolume == 1) { 1461 STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_RING; 1462 mStreamStates[AudioSystem.STREAM_NOTIFICATION].setVolumeIndexSettingName( 1463 System.VOLUME_SETTINGS[AudioSystem.STREAM_RING]); 1464 } else { 1465 STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_NOTIFICATION; 1466 mStreamStates[AudioSystem.STREAM_NOTIFICATION].setVolumeIndexSettingName( 1467 System.VOLUME_SETTINGS[AudioSystem.STREAM_NOTIFICATION]); 1468 // Persist notification volume volume as it was not persisted while aliased to ring volume 1469 // and persist with no delay as there might be registered observers of the persisted 1470 // notification volume. 1471 sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, AudioSystem.STREAM_NOTIFICATION, 1472 SENDMSG_REPLACE, 0, 0, mStreamStates[AudioSystem.STREAM_NOTIFICATION], 0); 1473 } 1474 } 1475 } 1476 } 1477 } 1478 1479 /** 1480 * Receiver for misc intent broadcasts the Phone app cares about. 1481 */ 1482 private class AudioServiceBroadcastReceiver extends BroadcastReceiver { 1483 @Override 1484 public void onReceive(Context context, Intent intent) { 1485 String action = intent.getAction(); 1486 1487 if (action.equals(BluetoothA2dp.ACTION_SINK_STATE_CHANGED)) { 1488 int state = intent.getIntExtra(BluetoothA2dp.EXTRA_SINK_STATE, 1489 BluetoothA2dp.STATE_DISCONNECTED); 1490 BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 1491 String address = btDevice.getAddress(); 1492 boolean isConnected = (mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP) && 1493 ((String)mConnectedDevices.get(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP)).equals(address)); 1494 1495 if (isConnected && 1496 state != BluetoothA2dp.STATE_CONNECTED && state != BluetoothA2dp.STATE_PLAYING) { 1497 if (address.equals(sBtDockAddress)) { 1498 Log.v(TAG, "Recognized undocking from BT dock"); 1499 AudioSystem.setForceUse(AudioSystem.FOR_DOCK, AudioSystem.FORCE_NONE); 1500 } 1501 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, 1502 AudioSystem.DEVICE_STATE_UNAVAILABLE, 1503 address); 1504 mConnectedDevices.remove(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP); 1505 } else if (!isConnected && 1506 (state == BluetoothA2dp.STATE_CONNECTED || 1507 state == BluetoothA2dp.STATE_PLAYING)) { 1508 if (btDevice.isBluetoothDock()) { 1509 Log.v(TAG, "Recognized connection to BT dock"); 1510 sBtDockAddress = address; 1511 Intent i = context.registerReceiver(null, new IntentFilter(Intent.ACTION_DOCK_EVENT)); 1512 if (i != null) { 1513 int dockState = i.getIntExtra(Intent.EXTRA_DOCK_STATE, Intent.EXTRA_DOCK_STATE_UNDOCKED); 1514 int config; 1515 switch (dockState) { 1516 case Intent.EXTRA_DOCK_STATE_DESK: 1517 config = AudioSystem.FORCE_BT_DESK_DOCK; 1518 break; 1519 case Intent.EXTRA_DOCK_STATE_CAR: 1520 config = AudioSystem.FORCE_BT_CAR_DOCK; 1521 break; 1522 case Intent.EXTRA_DOCK_STATE_UNDOCKED: 1523 default: 1524 config = AudioSystem.FORCE_NONE; 1525 } 1526 AudioSystem.setForceUse(AudioSystem.FOR_DOCK, config); 1527 } 1528 } 1529 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP, 1530 AudioSystem.DEVICE_STATE_AVAILABLE, 1531 address); 1532 // Reset A2DP suspend state each time a new sink is connected 1533 AudioSystem.setParameters("A2dpSuspended=false"); 1534 mConnectedDevices.put( new Integer(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP), 1535 address); 1536 } 1537 } else if (action.equals(BluetoothHeadset.ACTION_STATE_CHANGED)) { 1538 int state = intent.getIntExtra(BluetoothHeadset.EXTRA_STATE, 1539 BluetoothHeadset.STATE_ERROR); 1540 int device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO; 1541 BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); 1542 String address = null; 1543 if (btDevice != null) { 1544 address = btDevice.getAddress(); 1545 BluetoothClass btClass = btDevice.getBluetoothClass(); 1546 if (btClass != null) { 1547 switch (btClass.getDeviceClass()) { 1548 case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET: 1549 case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE: 1550 device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_HEADSET; 1551 break; 1552 case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO: 1553 device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_CARKIT; 1554 break; 1555 } 1556 } 1557 } 1558 1559 boolean isConnected = (mConnectedDevices.containsKey(device) && 1560 ((String)mConnectedDevices.get(device)).equals(address)); 1561 1562 if (isConnected && state != BluetoothHeadset.STATE_CONNECTED) { 1563 AudioSystem.setDeviceConnectionState(device, 1564 AudioSystem.DEVICE_STATE_UNAVAILABLE, 1565 address); 1566 mConnectedDevices.remove(device); 1567 } else if (!isConnected && state == BluetoothHeadset.STATE_CONNECTED) { 1568 AudioSystem.setDeviceConnectionState(device, 1569 AudioSystem.DEVICE_STATE_AVAILABLE, 1570 address); 1571 mConnectedDevices.put(new Integer(device), address); 1572 } 1573 } else if (action.equals(Intent.ACTION_HEADSET_PLUG)) { 1574 int state = intent.getIntExtra("state", 0); 1575 int microphone = intent.getIntExtra("microphone", 0); 1576 1577 if (microphone != 0) { 1578 boolean isConnected = mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_WIRED_HEADSET); 1579 if (state == 0 && isConnected) { 1580 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADSET, 1581 AudioSystem.DEVICE_STATE_UNAVAILABLE, 1582 ""); 1583 mConnectedDevices.remove(AudioSystem.DEVICE_OUT_WIRED_HEADSET); 1584 } else if (state == 1 && !isConnected) { 1585 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADSET, 1586 AudioSystem.DEVICE_STATE_AVAILABLE, 1587 ""); 1588 mConnectedDevices.put( new Integer(AudioSystem.DEVICE_OUT_WIRED_HEADSET), ""); 1589 } 1590 } else { 1591 boolean isConnected = mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE); 1592 if (state == 0 && isConnected) { 1593 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE, 1594 AudioSystem.DEVICE_STATE_UNAVAILABLE, 1595 ""); 1596 mConnectedDevices.remove(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE); 1597 } else if (state == 1 && !isConnected) { 1598 AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE, 1599 AudioSystem.DEVICE_STATE_AVAILABLE, 1600 ""); 1601 mConnectedDevices.put( new Integer(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE), ""); 1602 } 1603 } 1604 } 1605 } 1606 } 1607 1608 //========================================================================================== 1609 // AudioFocus 1610 //========================================================================================== 1611 private static class FocusStackEntry { 1612 public int mStreamType = -1;// no stream type 1613 public boolean mIsTransportControlReceiver = false; 1614 public IAudioFocusDispatcher mFocusDispatcher = null; 1615 public IBinder mSourceRef = null; 1616 public String mClientId; 1617 public int mDurationHint; 1618 1619 public FocusStackEntry() { 1620 } 1621 1622 public FocusStackEntry(int streamType, int duration, boolean isTransportControlReceiver, 1623 IAudioFocusDispatcher afl, IBinder source, String id) { 1624 mStreamType = streamType; 1625 mIsTransportControlReceiver = isTransportControlReceiver; 1626 mFocusDispatcher = afl; 1627 mSourceRef = source; 1628 mClientId = id; 1629 mDurationHint = duration; 1630 } 1631 } 1632 1633 private Stack<FocusStackEntry> mFocusStack = new Stack<FocusStackEntry>(); 1634 1635 /** 1636 * Helper function: 1637 * Display in the log the current entries in the audio focus stack 1638 */ 1639 private void dumpFocusStack(PrintWriter pw) { 1640 pw.println("Audio Focus stack entries:"); 1641 synchronized(mFocusStack) { 1642 Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator(); 1643 while(stackIterator.hasNext()) { 1644 FocusStackEntry fse = stackIterator.next(); 1645 pw.println(" source:" + fse.mSourceRef + " -- client: " + fse.mClientId 1646 + " -- duration: " +fse.mDurationHint); 1647 } 1648 } 1649 } 1650 1651 /** 1652 * Helper function: 1653 * Remove a focus listener from the focus stack. 1654 * @param focusListenerToRemove the focus listener 1655 * @param signal if true and the listener was at the top of the focus stack, i.e. it was holding 1656 * focus, notify the next item in the stack it gained focus. 1657 */ 1658 private void removeFocusStackEntry(String clientToRemove, boolean signal) { 1659 // is the current top of the focus stack abandoning focus? (because of death or request) 1660 if (!mFocusStack.empty() && mFocusStack.peek().mClientId.equals(clientToRemove)) 1661 { 1662 //Log.i(TAG, " removeFocusStackEntry() removing top of stack"); 1663 mFocusStack.pop(); 1664 if (signal) { 1665 // notify the new top of the stack it gained focus 1666 if (!mFocusStack.empty() && (mFocusStack.peek().mFocusDispatcher != null) 1667 && canReassignFocus()) { 1668 try { 1669 mFocusStack.peek().mFocusDispatcher.dispatchAudioFocusChange( 1670 AudioManager.AUDIOFOCUS_GAIN, mFocusStack.peek().mClientId); 1671 } catch (RemoteException e) { 1672 Log.e(TAG, " Failure to signal gain of focus due to "+ e); 1673 e.printStackTrace(); 1674 } 1675 } 1676 } 1677 } else { 1678 // focus is abandoned by a client that's not at the top of the stack, 1679 // no need to update focus. 1680 Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator(); 1681 while(stackIterator.hasNext()) { 1682 FocusStackEntry fse = (FocusStackEntry)stackIterator.next(); 1683 if(fse.mClientId.equals(clientToRemove)) { 1684 Log.i(TAG, " AudioFocus abandonAudioFocus(): removing entry for " 1685 + fse.mClientId); 1686 mFocusStack.remove(fse); 1687 } 1688 } 1689 } 1690 } 1691 1692 /** 1693 * Helper function: 1694 * Remove focus listeners from the focus stack for a particular client. 1695 */ 1696 private void removeFocusStackEntryForClient(IBinder cb) { 1697 // focus is abandoned by a client that's not at the top of the stack, 1698 // no need to update focus. 1699 Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator(); 1700 while(stackIterator.hasNext()) { 1701 FocusStackEntry fse = (FocusStackEntry)stackIterator.next(); 1702 if(fse.mSourceRef.equals(cb)) { 1703 Log.i(TAG, " AudioFocus abandonAudioFocus(): removing entry for " 1704 + fse.mClientId); 1705 mFocusStack.remove(fse); 1706 } 1707 } 1708 } 1709 1710 /** 1711 * Helper function: 1712 * Returns true if the system is in a state where the focus can be reevaluated, false otherwise. 1713 */ 1714 private boolean canReassignFocus() { 1715 // focus requests are rejected during a phone call 1716 if (getMode() == AudioSystem.MODE_IN_CALL) { 1717 Log.i(TAG, " AudioFocus can't be reassigned during a call, exiting"); 1718 return false; 1719 } 1720 return true; 1721 } 1722 1723 /** 1724 * Inner class to monitor audio focus client deaths, and remove them from the audio focus 1725 * stack if necessary. 1726 */ 1727 private class AudioFocusDeathHandler implements IBinder.DeathRecipient { 1728 private IBinder mCb; // To be notified of client's death 1729 1730 AudioFocusDeathHandler(IBinder cb) { 1731 mCb = cb; 1732 } 1733 1734 public void binderDied() { 1735 synchronized(mFocusStack) { 1736 Log.w(TAG, " AudioFocus audio focus client died"); 1737 removeFocusStackEntryForClient(mCb); 1738 } 1739 } 1740 1741 public IBinder getBinder() { 1742 return mCb; 1743 } 1744 } 1745 1746 1747 /** @see AudioManager#requestAudioFocus(int, int, IBinder, IAudioFocusDispatcher, String) */ 1748 public int requestAudioFocus(int mainStreamType, int durationHint, IBinder cb, 1749 IAudioFocusDispatcher fd, String clientId) { 1750 Log.i(TAG, " AudioFocus requestAudioFocus() from " + clientId); 1751 // the main stream type for the audio focus request is currently not used. It may 1752 // potentially be used to handle multiple stream type-dependent audio focuses. 1753 1754 if ((cb == null) || !cb.pingBinder()) { 1755 Log.i(TAG, " AudioFocus DOA client for requestAudioFocus(), exiting"); 1756 return AudioManager.AUDIOFOCUS_REQUEST_FAILED; 1757 } 1758 1759 if (!canReassignFocus()) { 1760 return AudioManager.AUDIOFOCUS_REQUEST_FAILED; 1761 } 1762 1763 synchronized(mFocusStack) { 1764 if (!mFocusStack.empty() && mFocusStack.peek().mClientId.equals(clientId)) { 1765 mFocusStack.peek().mDurationHint = durationHint; 1766 // if focus is already owned by this client, don't do anything 1767 return AudioManager.AUDIOFOCUS_REQUEST_GRANTED; 1768 } 1769 1770 // notify current top of stack it is losing focus 1771 if (!mFocusStack.empty() && (mFocusStack.peek().mFocusDispatcher != null)) { 1772 try { 1773 mFocusStack.peek().mFocusDispatcher.dispatchAudioFocusChange( 1774 (durationHint == AudioManager.AUDIOFOCUS_GAIN) ? 1775 AudioManager.AUDIOFOCUS_LOSS : 1776 AudioManager.AUDIOFOCUS_LOSS_TRANSIENT, 1777 mFocusStack.peek().mClientId); 1778 } catch (RemoteException e) { 1779 Log.e(TAG, " Failure to signal loss of focus due to "+ e); 1780 e.printStackTrace(); 1781 } 1782 } 1783 1784 // push focus requester at the top of the audio focus stack 1785 mFocusStack.push(new FocusStackEntry(mainStreamType, durationHint, false, fd, cb, 1786 clientId)); 1787 }//synchronized(mFocusStack) 1788 1789 // handle the potential premature death of the new holder of the focus 1790 // (premature death == death before abandoning focus) 1791 // Register for client death notification 1792 AudioFocusDeathHandler afdh = new AudioFocusDeathHandler(cb); 1793 try { 1794 cb.linkToDeath(afdh, 0); 1795 } catch (RemoteException e) { 1796 // client has already died! 1797 Log.w(TAG, " AudioFocus requestAudioFocus() could not link to "+cb+" binder death"); 1798 } 1799 1800 return AudioManager.AUDIOFOCUS_REQUEST_GRANTED; 1801 } 1802 1803 /** @see AudioManager#abandonAudioFocus(IBinder, IAudioFocusDispatcher, String) */ 1804 public int abandonAudioFocus(IAudioFocusDispatcher fl, String clientId) { 1805 Log.i(TAG, " AudioFocus abandonAudioFocus() from " + clientId); 1806 1807 // this will take care of notifying the new focus owner if needed 1808 removeFocusStackEntry(clientId, true); 1809 1810 return AudioManager.AUDIOFOCUS_REQUEST_GRANTED; 1811 } 1812 1813 1814 public void unregisterFocusClient(String clientId) { 1815 removeFocusStackEntry(clientId, false); 1816 } 1817 1818 1819 @Override 1820 protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 1821 // TODO probably a lot more to do here than just the audio focus stack 1822 dumpFocusStack(pw); 1823 } 1824 1825 1826} 1827