AudioService.java revision a60e212d0dda7d2a748180ce77405f2463c9cf53 
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.bluetooth.BluetoothA2dp;
21import android.bluetooth.BluetoothAdapter;
22import android.bluetooth.BluetoothClass;
23import android.bluetooth.BluetoothDevice;
24import android.bluetooth.BluetoothHeadset;
25import android.bluetooth.BluetoothProfile;
26import android.content.BroadcastReceiver;
27import android.content.ComponentName;
28import android.content.ContentResolver;
29import android.content.Context;
30import android.content.Intent;
31import android.content.IntentFilter;
32import android.content.pm.PackageManager;
33import android.database.ContentObserver;
34import android.media.MediaPlayer.OnCompletionListener;
35import android.media.MediaPlayer.OnErrorListener;
36import android.os.Binder;
37import android.os.Environment;
38import android.os.Handler;
39import android.os.IBinder;
40import android.os.Looper;
41import android.os.Message;
42import android.os.RemoteException;
43import android.os.ServiceManager;
44import android.os.SystemProperties;
45import android.provider.Settings;
46import android.provider.Settings.System;
47import android.telephony.PhoneStateListener;
48import android.telephony.TelephonyManager;
49import android.util.Log;
50import android.view.KeyEvent;
51import android.view.VolumePanel;
52
53import com.android.internal.telephony.ITelephony;
54
55import java.io.FileDescriptor;
56import java.io.IOException;
57import java.io.PrintWriter;
58import java.util.ArrayList;
59import java.util.HashMap;
60import java.util.Iterator;
61import java.util.List;
62import java.util.Map;
63import java.util.NoSuchElementException;
64import java.util.Set;
65import java.util.Stack;
66
67/**
68 * The implementation of the volume manager service.
69 * <p>
70 * This implementation focuses on delivering a responsive UI. Most methods are
71 * asynchronous to external calls. For example, the task of setting a volume
72 * will update our internal state, but in a separate thread will set the system
73 * volume and later persist to the database. Similarly, setting the ringer mode
74 * will update the state and broadcast a change and in a separate thread later
75 * persist the ringer mode.
76 *
77 * @hide
78 */
79public class AudioService extends IAudioService.Stub {
80
81    private static final String TAG = "AudioService";
82
83    /** How long to delay before persisting a change in volume/ringer mode. */
84    private static final int PERSIST_DELAY = 3000;
85
86    private Context mContext;
87    private ContentResolver mContentResolver;
88    private boolean mVoiceCapable;
89
90    /** The UI */
91    private VolumePanel mVolumePanel;
92
93    // sendMsg() flags
94    /** Used when a message should be shared across all stream types. */
95    private static final int SHARED_MSG = -1;
96    /** If the msg is already queued, replace it with this one. */
97    private static final int SENDMSG_REPLACE = 0;
98    /** If the msg is already queued, ignore this one and leave the old. */
99    private static final int SENDMSG_NOOP = 1;
100    /** If the msg is already queued, queue this one and leave the old. */
101    private static final int SENDMSG_QUEUE = 2;
102
103    // AudioHandler message.whats
104    private static final int MSG_SET_SYSTEM_VOLUME = 0;
105    private static final int MSG_PERSIST_VOLUME = 1;
106    private static final int MSG_PERSIST_RINGER_MODE = 3;
107    private static final int MSG_PERSIST_VIBRATE_SETTING = 4;
108    private static final int MSG_MEDIA_SERVER_DIED = 5;
109    private static final int MSG_MEDIA_SERVER_STARTED = 6;
110    private static final int MSG_PLAY_SOUND_EFFECT = 7;
111    private static final int MSG_BTA2DP_DOCK_TIMEOUT = 8;
112
113    private static final int BTA2DP_DOCK_TIMEOUT_MILLIS = 8000;
114
115    /** @see AudioSystemThread */
116    private AudioSystemThread mAudioSystemThread;
117    /** @see AudioHandler */
118    private AudioHandler mAudioHandler;
119    /** @see VolumeStreamState */
120    private VolumeStreamState[] mStreamStates;
121    private SettingsObserver mSettingsObserver;
122
123    private int mMode;
124    private Object mSettingsLock = new Object();
125    private boolean mMediaServerOk;
126
127    private SoundPool mSoundPool;
128    private Object mSoundEffectsLock = new Object();
129    private static final int NUM_SOUNDPOOL_CHANNELS = 4;
130    private static final int SOUND_EFFECT_VOLUME = 1000;
131
132    /* Sound effect file names  */
133    private static final String SOUND_EFFECTS_PATH = "/media/audio/ui/";
134    private static final String[] SOUND_EFFECT_FILES = new String[] {
135        "Effect_Tick.ogg",
136        "KeypressStandard.ogg",
137        "KeypressSpacebar.ogg",
138        "KeypressDelete.ogg",
139        "KeypressReturn.ogg"
140    };
141
142    /* Sound effect file name mapping sound effect id (AudioManager.FX_xxx) to
143     * file index in SOUND_EFFECT_FILES[] (first column) and indicating if effect
144     * uses soundpool (second column) */
145    private int[][] SOUND_EFFECT_FILES_MAP = new int[][] {
146        {0, -1},  // FX_KEY_CLICK
147        {0, -1},  // FX_FOCUS_NAVIGATION_UP
148        {0, -1},  // FX_FOCUS_NAVIGATION_DOWN
149        {0, -1},  // FX_FOCUS_NAVIGATION_LEFT
150        {0, -1},  // FX_FOCUS_NAVIGATION_RIGHT
151        {1, -1},  // FX_KEYPRESS_STANDARD
152        {2, -1},  // FX_KEYPRESS_SPACEBAR
153        {3, -1},  // FX_FOCUS_DELETE
154        {4, -1}   // FX_FOCUS_RETURN
155    };
156
157   /** @hide Maximum volume index values for audio streams */
158    private int[] MAX_STREAM_VOLUME = new int[] {
159        5,  // STREAM_VOICE_CALL
160        7,  // STREAM_SYSTEM
161        7,  // STREAM_RING
162        15, // STREAM_MUSIC
163        7,  // STREAM_ALARM
164        7,  // STREAM_NOTIFICATION
165        15, // STREAM_BLUETOOTH_SCO
166        7,  // STREAM_SYSTEM_ENFORCED
167        15, // STREAM_DTMF
168        15  // STREAM_TTS
169    };
170    /* STREAM_VOLUME_ALIAS[] indicates for each stream if it uses the volume settings
171     * of another stream: This avoids multiplying the volume settings for hidden
172     * stream types that follow other stream behavior for volume settings
173     * NOTE: do not create loops in aliases! */
174    private int[] STREAM_VOLUME_ALIAS = new int[] {
175        AudioSystem.STREAM_VOICE_CALL,  // STREAM_VOICE_CALL
176        AudioSystem.STREAM_SYSTEM,  // STREAM_SYSTEM
177        AudioSystem.STREAM_RING,  // STREAM_RING
178        AudioSystem.STREAM_MUSIC, // STREAM_MUSIC
179        AudioSystem.STREAM_ALARM,  // STREAM_ALARM
180        AudioSystem.STREAM_NOTIFICATION,  // STREAM_NOTIFICATION
181        AudioSystem.STREAM_BLUETOOTH_SCO, // STREAM_BLUETOOTH_SCO
182        AudioSystem.STREAM_SYSTEM,  // STREAM_SYSTEM_ENFORCED
183        AudioSystem.STREAM_VOICE_CALL, // STREAM_DTMF
184        AudioSystem.STREAM_MUSIC  // STREAM_TTS
185    };
186
187    private AudioSystem.ErrorCallback mAudioSystemCallback = new AudioSystem.ErrorCallback() {
188        public void onError(int error) {
189            switch (error) {
190            case AudioSystem.AUDIO_STATUS_SERVER_DIED:
191                if (mMediaServerOk) {
192                    sendMsg(mAudioHandler, MSG_MEDIA_SERVER_DIED, SHARED_MSG, SENDMSG_NOOP, 0, 0,
193                            null, 1500);
194                    mMediaServerOk = false;
195                }
196                break;
197            case AudioSystem.AUDIO_STATUS_OK:
198                if (!mMediaServerOk) {
199                    sendMsg(mAudioHandler, MSG_MEDIA_SERVER_STARTED, SHARED_MSG, SENDMSG_NOOP, 0, 0,
200                            null, 0);
201                    mMediaServerOk = true;
202                }
203                break;
204            default:
205                break;
206            }
207       }
208    };
209
210    /**
211     * Current ringer mode from one of {@link AudioManager#RINGER_MODE_NORMAL},
212     * {@link AudioManager#RINGER_MODE_SILENT}, or
213     * {@link AudioManager#RINGER_MODE_VIBRATE}.
214     */
215    private int mRingerMode;
216
217    /** @see System#MODE_RINGER_STREAMS_AFFECTED */
218    private int mRingerModeAffectedStreams;
219
220    // Streams currently muted by ringer mode
221    private int mRingerModeMutedStreams;
222
223    /** @see System#MUTE_STREAMS_AFFECTED */
224    private int mMuteAffectedStreams;
225
226    /**
227     * Has multiple bits per vibrate type to indicate the type's vibrate
228     * setting. See {@link #setVibrateSetting(int, int)}.
229     * <p>
230     * NOTE: This is not the final decision of whether vibrate is on/off for the
231     * type since it depends on the ringer mode. See {@link #shouldVibrate(int)}.
232     */
233    private int mVibrateSetting;
234
235    /** @see System#NOTIFICATIONS_USE_RING_VOLUME */
236    private int mNotificationsUseRingVolume;
237
238    // Broadcast receiver for device connections intent broadcasts
239    private final BroadcastReceiver mReceiver = new AudioServiceBroadcastReceiver();
240
241    //  Broadcast receiver for media button broadcasts (separate from mReceiver to
242    //  independently change its priority)
243    private final BroadcastReceiver mMediaButtonReceiver = new MediaButtonBroadcastReceiver();
244
245    // Used to alter media button redirection when the phone is ringing.
246    private boolean mIsRinging = false;
247
248    // Devices currently connected
249    private HashMap <Integer, String> mConnectedDevices = new HashMap <Integer, String>();
250
251    // Forced device usage for communications
252    private int mForcedUseForComm;
253
254    // List of binder death handlers for setMode() client processes.
255    // The last process to have called setMode() is at the top of the list.
256    private ArrayList <SetModeDeathHandler> mSetModeDeathHandlers = new ArrayList <SetModeDeathHandler>();
257
258    // List of clients having issued a SCO start request
259    private ArrayList <ScoClient> mScoClients = new ArrayList <ScoClient>();
260
261    // BluetoothHeadset API to control SCO connection
262    private BluetoothHeadset mBluetoothHeadset;
263
264    // Bluetooth headset device
265    private BluetoothDevice mBluetoothHeadsetDevice;
266
267    // Indicate if SCO audio connection is currently active and if the initiator is
268    // audio service (internal) or bluetooth headset (external)
269    private int mScoAudioState;
270    // SCO audio state is not active
271    private static final int SCO_STATE_INACTIVE = 0;
272    // SCO audio state is active or starting due to a local request to start a virtual call
273    private static final int SCO_STATE_ACTIVE_INTERNAL = 1;
274    // SCO audio state is active due to an action in BT handsfree (either voice recognition or
275    // in call audio)
276    private static final int SCO_STATE_ACTIVE_EXTERNAL = 2;
277
278    // true if boot sequence has been completed
279    private boolean mBootCompleted;
280    // listener for SoundPool sample load completion indication
281    private SoundPoolCallback mSoundPoolCallBack;
282    // thread for SoundPool listener
283    private SoundPoolListenerThread mSoundPoolListenerThread;
284    // message looper for SoundPool listener
285    private Looper mSoundPoolLooper = null;
286
287    ///////////////////////////////////////////////////////////////////////////
288    // Construction
289    ///////////////////////////////////////////////////////////////////////////
290
291    /** @hide */
292    public AudioService(Context context) {
293        mContext = context;
294        mContentResolver = context.getContentResolver();
295        mVoiceCapable = mContext.getResources().getBoolean(
296                com.android.internal.R.bool.config_voice_capable);
297
298       // Intialized volume
299        MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL] = SystemProperties.getInt(
300            "ro.config.vc_call_vol_steps",
301           MAX_STREAM_VOLUME[AudioSystem.STREAM_VOICE_CALL]);
302
303        mVolumePanel = new VolumePanel(context, this);
304        mSettingsObserver = new SettingsObserver();
305        mForcedUseForComm = AudioSystem.FORCE_NONE;
306        createAudioSystemThread();
307        readPersistedSettings();
308        createStreamStates();
309        // Call setMode() to initialize mSetModeDeathHandlers
310        mMode = AudioSystem.MODE_INVALID;
311        setMode(AudioSystem.MODE_NORMAL, null);
312        mMediaServerOk = true;
313
314        // Call setRingerModeInt() to apply correct mute
315        // state on streams affected by ringer mode.
316        mRingerModeMutedStreams = 0;
317        setRingerModeInt(getRingerMode(), false);
318
319        AudioSystem.setErrorCallback(mAudioSystemCallback);
320
321        mBluetoothHeadsetDevice = null;
322        BluetoothAdapter adapter = BluetoothAdapter.getDefaultAdapter();
323        if (adapter != null) {
324            adapter.getProfileProxy(mContext, mBluetoothProfileServiceListener,
325                                    BluetoothProfile.HEADSET);
326        }
327
328        // Register for device connection intent broadcasts.
329        IntentFilter intentFilter =
330                new IntentFilter(Intent.ACTION_HEADSET_PLUG);
331
332        intentFilter.addAction(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED);
333        intentFilter.addAction(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED);
334        intentFilter.addAction(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED);
335        intentFilter.addAction(Intent.ACTION_DOCK_EVENT);
336        intentFilter.addAction(Intent.ACTION_USB_ANLG_HEADSET_PLUG);
337        intentFilter.addAction(Intent.ACTION_USB_DGTL_HEADSET_PLUG);
338        intentFilter.addAction(Intent.ACTION_HDMI_AUDIO_PLUG);
339        intentFilter.addAction(Intent.ACTION_BOOT_COMPLETED);
340        context.registerReceiver(mReceiver, intentFilter);
341
342        // Register for media button intent broadcasts.
343        intentFilter = new IntentFilter(Intent.ACTION_MEDIA_BUTTON);
344        intentFilter.setPriority(IntentFilter.SYSTEM_HIGH_PRIORITY);
345        context.registerReceiver(mMediaButtonReceiver, intentFilter);
346
347        // Register for phone state monitoring
348        TelephonyManager tmgr = (TelephonyManager)
349                context.getSystemService(Context.TELEPHONY_SERVICE);
350        tmgr.listen(mPhoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
351    }
352
353    private void createAudioSystemThread() {
354        mAudioSystemThread = new AudioSystemThread();
355        mAudioSystemThread.start();
356        waitForAudioHandlerCreation();
357    }
358
359    /** Waits for the volume handler to be created by the other thread. */
360    private void waitForAudioHandlerCreation() {
361        synchronized(this) {
362            while (mAudioHandler == null) {
363                try {
364                    // Wait for mAudioHandler to be set by the other thread
365                    wait();
366                } catch (InterruptedException e) {
367                    Log.e(TAG, "Interrupted while waiting on volume handler.");
368                }
369            }
370        }
371    }
372
373    private void createStreamStates() {
374        int numStreamTypes = AudioSystem.getNumStreamTypes();
375        VolumeStreamState[] streams = mStreamStates = new VolumeStreamState[numStreamTypes];
376
377        for (int i = 0; i < numStreamTypes; i++) {
378            streams[i] = new VolumeStreamState(System.VOLUME_SETTINGS[STREAM_VOLUME_ALIAS[i]], i);
379        }
380
381        // Correct stream index values for streams with aliases
382        for (int i = 0; i < numStreamTypes; i++) {
383            if (STREAM_VOLUME_ALIAS[i] != i) {
384                int index = rescaleIndex(streams[i].mIndex, STREAM_VOLUME_ALIAS[i], i);
385                streams[i].mIndex = streams[i].getValidIndex(index);
386                setStreamVolumeIndex(i, index);
387                index = rescaleIndex(streams[i].mLastAudibleIndex, STREAM_VOLUME_ALIAS[i], i);
388                streams[i].mLastAudibleIndex = streams[i].getValidIndex(index);
389            }
390        }
391    }
392
393    private void readPersistedSettings() {
394        final ContentResolver cr = mContentResolver;
395
396        mRingerMode = System.getInt(cr, System.MODE_RINGER, AudioManager.RINGER_MODE_NORMAL);
397
398        mVibrateSetting = System.getInt(cr, System.VIBRATE_ON, 0);
399
400        mRingerModeAffectedStreams = Settings.System.getInt(cr,
401                Settings.System.MODE_RINGER_STREAMS_AFFECTED,
402                ((1 << AudioSystem.STREAM_RING)|(1 << AudioSystem.STREAM_NOTIFICATION)|
403                 (1 << AudioSystem.STREAM_SYSTEM)|(1 << AudioSystem.STREAM_SYSTEM_ENFORCED)));
404
405        mMuteAffectedStreams = System.getInt(cr,
406                System.MUTE_STREAMS_AFFECTED,
407                ((1 << AudioSystem.STREAM_MUSIC)|(1 << AudioSystem.STREAM_RING)|(1 << AudioSystem.STREAM_SYSTEM)));
408
409        mNotificationsUseRingVolume = System.getInt(cr,
410                Settings.System.NOTIFICATIONS_USE_RING_VOLUME, 1);
411
412        if (mNotificationsUseRingVolume == 1) {
413            STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_RING;
414        }
415        // Each stream will read its own persisted settings
416
417        // Broadcast the sticky intent
418        broadcastRingerMode();
419
420        // Broadcast vibrate settings
421        broadcastVibrateSetting(AudioManager.VIBRATE_TYPE_RINGER);
422        broadcastVibrateSetting(AudioManager.VIBRATE_TYPE_NOTIFICATION);
423    }
424
425    private void setStreamVolumeIndex(int stream, int index) {
426        AudioSystem.setStreamVolumeIndex(stream, (index + 5)/10);
427    }
428
429    private int rescaleIndex(int index, int srcStream, int dstStream) {
430        return (index * mStreamStates[dstStream].getMaxIndex() + mStreamStates[srcStream].getMaxIndex() / 2) / mStreamStates[srcStream].getMaxIndex();
431    }
432
433    ///////////////////////////////////////////////////////////////////////////
434    // IPC methods
435    ///////////////////////////////////////////////////////////////////////////
436
437    /** @see AudioManager#adjustVolume(int, int) */
438    public void adjustVolume(int direction, int flags) {
439        adjustSuggestedStreamVolume(direction, AudioManager.USE_DEFAULT_STREAM_TYPE, flags);
440    }
441
442    /** @see AudioManager#adjustVolume(int, int, int) */
443    public void adjustSuggestedStreamVolume(int direction, int suggestedStreamType, int flags) {
444
445        int streamType = getActiveStreamType(suggestedStreamType);
446
447        // Don't play sound on other streams
448        if (streamType != AudioSystem.STREAM_RING && (flags & AudioManager.FLAG_PLAY_SOUND) != 0) {
449            flags &= ~AudioManager.FLAG_PLAY_SOUND;
450        }
451
452        adjustStreamVolume(streamType, direction, flags);
453    }
454
455    /** @see AudioManager#adjustStreamVolume(int, int, int) */
456    public void adjustStreamVolume(int streamType, int direction, int flags) {
457        ensureValidDirection(direction);
458        ensureValidStreamType(streamType);
459
460
461        VolumeStreamState streamState = mStreamStates[STREAM_VOLUME_ALIAS[streamType]];
462        final int oldIndex = (streamState.muteCount() != 0) ? streamState.mLastAudibleIndex : streamState.mIndex;
463        boolean adjustVolume = true;
464
465        // If either the client forces allowing ringer modes for this adjustment,
466        // or the stream type is one that is affected by ringer modes
467        if ((flags & AudioManager.FLAG_ALLOW_RINGER_MODES) != 0
468                || streamType == AudioSystem.STREAM_RING) {
469            // Check if the ringer mode changes with this volume adjustment. If
470            // it does, it will handle adjusting the volume, so we won't below
471            adjustVolume = checkForRingerModeChange(oldIndex, direction);
472        }
473
474        // If stream is muted, adjust last audible index only
475        int index;
476        if (streamState.muteCount() != 0) {
477            if (adjustVolume) {
478                streamState.adjustLastAudibleIndex(direction);
479                // Post a persist volume msg
480                sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, streamType,
481                        SENDMSG_REPLACE, 0, 1, streamState, PERSIST_DELAY);
482            }
483            index = streamState.mLastAudibleIndex;
484        } else {
485            if (adjustVolume && streamState.adjustIndex(direction)) {
486                // Post message to set system volume (it in turn will post a message
487                // to persist). Do not change volume if stream is muted.
488                sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, STREAM_VOLUME_ALIAS[streamType], SENDMSG_NOOP, 0, 0,
489                        streamState, 0);
490            }
491            index = streamState.mIndex;
492        }
493        // UI
494        mVolumePanel.postVolumeChanged(streamType, flags);
495        // Broadcast Intent
496        sendVolumeUpdate(streamType, oldIndex, index);
497    }
498
499    /** @see AudioManager#setStreamVolume(int, int, int) */
500    public void setStreamVolume(int streamType, int index, int flags) {
501        ensureValidStreamType(streamType);
502        VolumeStreamState streamState = mStreamStates[STREAM_VOLUME_ALIAS[streamType]];
503
504        final int oldIndex = (streamState.muteCount() != 0) ? streamState.mLastAudibleIndex : streamState.mIndex;
505
506        index = rescaleIndex(index * 10, streamType, STREAM_VOLUME_ALIAS[streamType]);
507        setStreamVolumeInt(STREAM_VOLUME_ALIAS[streamType], index, false, true);
508
509        index = (streamState.muteCount() != 0) ? streamState.mLastAudibleIndex : streamState.mIndex;
510
511        // UI, etc.
512        mVolumePanel.postVolumeChanged(streamType, flags);
513        // Broadcast Intent
514        sendVolumeUpdate(streamType, oldIndex, index);
515    }
516
517    private void sendVolumeUpdate(int streamType, int oldIndex, int index) {
518        oldIndex = (oldIndex + 5) / 10;
519        index = (index + 5) / 10;
520
521        Intent intent = new Intent(AudioManager.VOLUME_CHANGED_ACTION);
522        intent.putExtra(AudioManager.EXTRA_VOLUME_STREAM_TYPE, streamType);
523        intent.putExtra(AudioManager.EXTRA_VOLUME_STREAM_VALUE, index);
524        intent.putExtra(AudioManager.EXTRA_PREV_VOLUME_STREAM_VALUE, oldIndex);
525
526        mContext.sendBroadcast(intent);
527    }
528
529    /**
530     * Sets the stream state's index, and posts a message to set system volume.
531     * This will not call out to the UI. Assumes a valid stream type.
532     *
533     * @param streamType Type of the stream
534     * @param index Desired volume index of the stream
535     * @param force If true, set the volume even if the desired volume is same
536     * as the current volume.
537     * @param lastAudible If true, stores new index as last audible one
538     */
539    private void setStreamVolumeInt(int streamType, int index, boolean force, boolean lastAudible) {
540        VolumeStreamState streamState = mStreamStates[streamType];
541
542        // If stream is muted, set last audible index only
543        if (streamState.muteCount() != 0) {
544            // Do not allow last audible index to be 0
545            if (index != 0) {
546                streamState.setLastAudibleIndex(index);
547                // Post a persist volume msg
548                sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, streamType,
549                        SENDMSG_REPLACE, 0, 1, streamState, PERSIST_DELAY);
550            }
551        } else {
552            if (streamState.setIndex(index, lastAudible) || force) {
553                // Post message to set system volume (it in turn will post a message
554                // to persist).
555                sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, streamType, SENDMSG_NOOP, 0, 0,
556                        streamState, 0);
557            }
558        }
559    }
560
561    /** @see AudioManager#setStreamSolo(int, boolean) */
562    public void setStreamSolo(int streamType, boolean state, IBinder cb) {
563        for (int stream = 0; stream < mStreamStates.length; stream++) {
564            if (!isStreamAffectedByMute(stream) || stream == streamType) continue;
565            // Bring back last audible volume
566            mStreamStates[stream].mute(cb, state);
567         }
568    }
569
570    /** @see AudioManager#setStreamMute(int, boolean) */
571    public void setStreamMute(int streamType, boolean state, IBinder cb) {
572        if (isStreamAffectedByMute(streamType)) {
573            mStreamStates[streamType].mute(cb, state);
574        }
575    }
576
577    /** @see AudioManager#getStreamVolume(int) */
578    public int getStreamVolume(int streamType) {
579        ensureValidStreamType(streamType);
580        return (mStreamStates[streamType].mIndex + 5) / 10;
581    }
582
583    /** @see AudioManager#getStreamMaxVolume(int) */
584    public int getStreamMaxVolume(int streamType) {
585        ensureValidStreamType(streamType);
586        return (mStreamStates[streamType].getMaxIndex() + 5) / 10;
587    }
588
589    /** @see AudioManager#getRingerMode() */
590    public int getRingerMode() {
591        return mRingerMode;
592    }
593
594    /** @see AudioManager#setRingerMode(int) */
595    public void setRingerMode(int ringerMode) {
596        synchronized (mSettingsLock) {
597            if (ringerMode != mRingerMode) {
598                setRingerModeInt(ringerMode, true);
599                // Send sticky broadcast
600                broadcastRingerMode();
601            }
602        }
603    }
604
605    private void setRingerModeInt(int ringerMode, boolean persist) {
606        mRingerMode = ringerMode;
607
608        // Mute stream if not previously muted by ringer mode and ringer mode
609        // is not RINGER_MODE_NORMAL and stream is affected by ringer mode.
610        // Unmute stream if previously muted by ringer mode and ringer mode
611        // is RINGER_MODE_NORMAL or stream is not affected by ringer mode.
612        int numStreamTypes = AudioSystem.getNumStreamTypes();
613        for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) {
614            if (isStreamMutedByRingerMode(streamType)) {
615                if (!isStreamAffectedByRingerMode(streamType) ||
616                    mRingerMode == AudioManager.RINGER_MODE_NORMAL) {
617                    mStreamStates[streamType].mute(null, false);
618                    mRingerModeMutedStreams &= ~(1 << streamType);
619                }
620            } else {
621                if (isStreamAffectedByRingerMode(streamType) &&
622                    mRingerMode != AudioManager.RINGER_MODE_NORMAL) {
623                   mStreamStates[streamType].mute(null, true);
624                   mRingerModeMutedStreams |= (1 << streamType);
625               }
626            }
627        }
628
629        // Post a persist ringer mode msg
630        if (persist) {
631            sendMsg(mAudioHandler, MSG_PERSIST_RINGER_MODE, SHARED_MSG,
632                    SENDMSG_REPLACE, 0, 0, null, PERSIST_DELAY);
633        }
634    }
635
636    /** @see AudioManager#shouldVibrate(int) */
637    public boolean shouldVibrate(int vibrateType) {
638
639        switch (getVibrateSetting(vibrateType)) {
640
641            case AudioManager.VIBRATE_SETTING_ON:
642                return mRingerMode != AudioManager.RINGER_MODE_SILENT;
643
644            case AudioManager.VIBRATE_SETTING_ONLY_SILENT:
645                return mRingerMode == AudioManager.RINGER_MODE_VIBRATE;
646
647            case AudioManager.VIBRATE_SETTING_OFF:
648                // return false, even for incoming calls
649                return false;
650
651            default:
652                return false;
653        }
654    }
655
656    /** @see AudioManager#getVibrateSetting(int) */
657    public int getVibrateSetting(int vibrateType) {
658        return (mVibrateSetting >> (vibrateType * 2)) & 3;
659    }
660
661    /** @see AudioManager#setVibrateSetting(int, int) */
662    public void setVibrateSetting(int vibrateType, int vibrateSetting) {
663
664        mVibrateSetting = getValueForVibrateSetting(mVibrateSetting, vibrateType, vibrateSetting);
665
666        // Broadcast change
667        broadcastVibrateSetting(vibrateType);
668
669        // Post message to set ringer mode (it in turn will post a message
670        // to persist)
671        sendMsg(mAudioHandler, MSG_PERSIST_VIBRATE_SETTING, SHARED_MSG, SENDMSG_NOOP, 0, 0,
672                null, 0);
673    }
674
675    /**
676     * @see #setVibrateSetting(int, int)
677     */
678    public static int getValueForVibrateSetting(int existingValue, int vibrateType,
679            int vibrateSetting) {
680
681        // First clear the existing setting. Each vibrate type has two bits in
682        // the value. Note '3' is '11' in binary.
683        existingValue &= ~(3 << (vibrateType * 2));
684
685        // Set into the old value
686        existingValue |= (vibrateSetting & 3) << (vibrateType * 2);
687
688        return existingValue;
689    }
690
691    private class SetModeDeathHandler implements IBinder.DeathRecipient {
692        private IBinder mCb; // To be notified of client's death
693        private int mMode = AudioSystem.MODE_NORMAL; // Current mode set by this client
694
695        SetModeDeathHandler(IBinder cb) {
696            mCb = cb;
697        }
698
699        public void binderDied() {
700            synchronized(mSetModeDeathHandlers) {
701                Log.w(TAG, "setMode() client died");
702                int index = mSetModeDeathHandlers.indexOf(this);
703                if (index < 0) {
704                    Log.w(TAG, "unregistered setMode() client died");
705                } else {
706                    mSetModeDeathHandlers.remove(this);
707                    // If dead client was a the top of client list,
708                    // apply next mode in the stack
709                    if (index == 0) {
710                        // mSetModeDeathHandlers is never empty as the initial entry
711                        // created when AudioService starts is never removed
712                        SetModeDeathHandler hdlr = mSetModeDeathHandlers.get(0);
713                        int mode = hdlr.getMode();
714                        if (AudioService.this.mMode != mode) {
715                            if (AudioSystem.setPhoneState(mode) == AudioSystem.AUDIO_STATUS_OK) {
716                                AudioService.this.mMode = mode;
717                                if (mode != AudioSystem.MODE_NORMAL) {
718                                    synchronized(mScoClients) {
719                                        checkScoAudioState();
720                                        if (mScoAudioState == SCO_STATE_ACTIVE_EXTERNAL) {
721                                            mBluetoothHeadset.stopVoiceRecognition(
722                                                    mBluetoothHeadsetDevice);
723                                            mBluetoothHeadset.stopVirtualVoiceCall(
724                                                    mBluetoothHeadsetDevice);
725                                        } else {
726                                            clearAllScoClients(mCb, true);
727                                        }
728                                    }
729                                }
730                            }
731                        }
732                    }
733                }
734            }
735        }
736
737        public void setMode(int mode) {
738            mMode = mode;
739        }
740
741        public int getMode() {
742            return mMode;
743        }
744
745        public IBinder getBinder() {
746            return mCb;
747        }
748    }
749
750    /** @see AudioManager#setMode(int) */
751    public void setMode(int mode, IBinder cb) {
752        if (!checkAudioSettingsPermission("setMode()")) {
753            return;
754        }
755
756        if (mode < AudioSystem.MODE_CURRENT || mode >= AudioSystem.NUM_MODES) {
757            return;
758        }
759
760        synchronized (mSettingsLock) {
761            if (mode == AudioSystem.MODE_CURRENT) {
762                mode = mMode;
763            }
764            if (mode != mMode) {
765
766                // automatically handle audio focus for mode changes
767                handleFocusForCalls(mMode, mode);
768
769                if (AudioSystem.setPhoneState(mode) == AudioSystem.AUDIO_STATUS_OK) {
770                    mMode = mode;
771
772                    synchronized(mSetModeDeathHandlers) {
773                        SetModeDeathHandler hdlr = null;
774                        Iterator iter = mSetModeDeathHandlers.iterator();
775                        while (iter.hasNext()) {
776                            SetModeDeathHandler h = (SetModeDeathHandler)iter.next();
777                            if (h.getBinder() == cb) {
778                                hdlr = h;
779                                // Remove from client list so that it is re-inserted at top of list
780                                iter.remove();
781                                break;
782                            }
783                        }
784                        if (hdlr == null) {
785                            hdlr = new SetModeDeathHandler(cb);
786                            // cb is null when setMode() is called by AudioService constructor
787                            if (cb != null) {
788                                // Register for client death notification
789                                try {
790                                    cb.linkToDeath(hdlr, 0);
791                                } catch (RemoteException e) {
792                                    // Client has died!
793                                    Log.w(TAG, "setMode() could not link to "+cb+" binder death");
794                                }
795                            }
796                        }
797                        // Last client to call setMode() is always at top of client list
798                        // as required by SetModeDeathHandler.binderDied()
799                        mSetModeDeathHandlers.add(0, hdlr);
800                        hdlr.setMode(mode);
801                    }
802
803                    // when entering RINGTONE, IN_CALL or IN_COMMUNICATION mode, clear all
804                    // SCO connections not started by the application changing the mode
805                    if (mode != AudioSystem.MODE_NORMAL) {
806                        synchronized(mScoClients) {
807                            checkScoAudioState();
808                            if (mScoAudioState == SCO_STATE_ACTIVE_EXTERNAL) {
809                                mBluetoothHeadset.stopVoiceRecognition(mBluetoothHeadsetDevice);
810                                mBluetoothHeadset.stopVirtualVoiceCall(mBluetoothHeadsetDevice);
811                            } else {
812                                clearAllScoClients(cb, true);
813                            }
814                        }
815                    }
816                }
817            }
818            int streamType = getActiveStreamType(AudioManager.USE_DEFAULT_STREAM_TYPE);
819            int index = mStreamStates[STREAM_VOLUME_ALIAS[streamType]].mIndex;
820            setStreamVolumeInt(STREAM_VOLUME_ALIAS[streamType], index, true, false);
821        }
822    }
823
824    /** pre-condition: oldMode != newMode */
825    private void handleFocusForCalls(int oldMode, int newMode) {
826        // if ringing
827        if (newMode == AudioSystem.MODE_RINGTONE) {
828            // if not ringing silently
829            int ringVolume = AudioService.this.getStreamVolume(AudioManager.STREAM_RING);
830            if (ringVolume > 0) {
831                // request audio focus for the communication focus entry
832                requestAudioFocus(AudioManager.STREAM_RING,
833                        AudioManager.AUDIOFOCUS_GAIN_TRANSIENT,
834                        null, null /* both allowed to be null only for this clientId */,
835                        IN_VOICE_COMM_FOCUS_ID /*clientId*/);
836
837            }
838        }
839        // if entering call
840        else if ((newMode == AudioSystem.MODE_IN_CALL)
841                || (newMode == AudioSystem.MODE_IN_COMMUNICATION)) {
842            // request audio focus for the communication focus entry
843            // (it's ok if focus was already requested during ringing)
844            requestAudioFocus(AudioManager.STREAM_RING,
845                    AudioManager.AUDIOFOCUS_GAIN_TRANSIENT,
846                    null, null /* both allowed to be null only for this clientId */,
847                    IN_VOICE_COMM_FOCUS_ID /*clientId*/);
848        }
849        // if exiting call
850        else if (newMode == AudioSystem.MODE_NORMAL) {
851            // abandon audio focus for communication focus entry
852            abandonAudioFocus(null, IN_VOICE_COMM_FOCUS_ID);
853        }
854    }
855
856    /** @see AudioManager#getMode() */
857    public int getMode() {
858        return mMode;
859    }
860
861    /** @see AudioManager#playSoundEffect(int) */
862    public void playSoundEffect(int effectType) {
863        sendMsg(mAudioHandler, MSG_PLAY_SOUND_EFFECT, SHARED_MSG, SENDMSG_NOOP,
864                effectType, -1, null, 0);
865    }
866
867    /** @see AudioManager#playSoundEffect(int, float) */
868    public void playSoundEffectVolume(int effectType, float volume) {
869        loadSoundEffects();
870        sendMsg(mAudioHandler, MSG_PLAY_SOUND_EFFECT, SHARED_MSG, SENDMSG_NOOP,
871                effectType, (int) (volume * 1000), null, 0);
872    }
873
874    /**
875     * Loads samples into the soundpool.
876     * This method must be called at when sound effects are enabled
877     */
878    public boolean loadSoundEffects() {
879        int status;
880
881        synchronized (mSoundEffectsLock) {
882            if (!mBootCompleted) {
883                Log.w(TAG, "loadSoundEffects() called before boot complete");
884                return false;
885            }
886
887            if (mSoundPool != null) {
888                return true;
889            }
890            mSoundPool = new SoundPool(NUM_SOUNDPOOL_CHANNELS, AudioSystem.STREAM_SYSTEM, 0);
891            if (mSoundPool == null) {
892                Log.w(TAG, "loadSoundEffects() could not allocate sound pool");
893                return false;
894            }
895
896            try {
897                mSoundPoolCallBack = null;
898                mSoundPoolListenerThread = new SoundPoolListenerThread();
899                mSoundPoolListenerThread.start();
900                // Wait for mSoundPoolCallBack to be set by the other thread
901                mSoundEffectsLock.wait();
902            } catch (InterruptedException e) {
903                Log.w(TAG, "Interrupted while waiting sound pool listener thread.");
904            }
905
906            if (mSoundPoolCallBack == null) {
907                Log.w(TAG, "loadSoundEffects() could not create SoundPool listener or thread");
908                if (mSoundPoolLooper != null) {
909                    mSoundPoolLooper.quit();
910                    mSoundPoolLooper = null;
911                }
912                mSoundPoolListenerThread = null;
913                mSoundPool.release();
914                mSoundPool = null;
915                return false;
916            }
917            /*
918             * poolId table: The value -1 in this table indicates that corresponding
919             * file (same index in SOUND_EFFECT_FILES[] has not been loaded.
920             * Once loaded, the value in poolId is the sample ID and the same
921             * sample can be reused for another effect using the same file.
922             */
923            int[] poolId = new int[SOUND_EFFECT_FILES.length];
924            for (int fileIdx = 0; fileIdx < SOUND_EFFECT_FILES.length; fileIdx++) {
925                poolId[fileIdx] = -1;
926            }
927            /*
928             * Effects whose value in SOUND_EFFECT_FILES_MAP[effect][1] is -1 must be loaded.
929             * If load succeeds, value in SOUND_EFFECT_FILES_MAP[effect][1] is > 0:
930             * this indicates we have a valid sample loaded for this effect.
931             */
932
933            for (int effect = 0; effect < AudioManager.NUM_SOUND_EFFECTS; effect++) {
934                // Do not load sample if this effect uses the MediaPlayer
935                if (SOUND_EFFECT_FILES_MAP[effect][1] == 0) {
936                    continue;
937                }
938                if (poolId[SOUND_EFFECT_FILES_MAP[effect][0]] == -1) {
939                    String filePath = Environment.getRootDirectory()
940                            + SOUND_EFFECTS_PATH
941                            + SOUND_EFFECT_FILES[SOUND_EFFECT_FILES_MAP[effect][0]];
942                    int sampleId = mSoundPool.load(filePath, 0);
943                    SOUND_EFFECT_FILES_MAP[effect][1] = sampleId;
944                    poolId[SOUND_EFFECT_FILES_MAP[effect][0]] = sampleId;
945                    if (sampleId <= 0) {
946                        Log.w(TAG, "Soundpool could not load file: "+filePath);
947                    }
948                    mSoundPoolCallBack.setLastSample(sampleId);
949                } else {
950                    SOUND_EFFECT_FILES_MAP[effect][1] = poolId[SOUND_EFFECT_FILES_MAP[effect][0]];
951                }
952            }
953            // wait for all samples to be loaded
954            try {
955                mSoundEffectsLock.wait();
956                status = mSoundPoolCallBack.status();
957            } catch (java.lang.InterruptedException e) {
958                status = -1;
959            }
960            if (mSoundPoolLooper != null) {
961                mSoundPoolLooper.quit();
962                mSoundPoolLooper = null;
963            }
964            mSoundPoolListenerThread = null;
965            if (status != 0) {
966                Log.w(TAG,
967                        "loadSoundEffects(), Error "
968                                + mSoundPoolCallBack.status()
969                                + " while loading samples");
970                mSoundPool.release();
971                mSoundPool = null;
972            }
973        }
974        return (status == 0);
975    }
976
977    /**
978     *  Unloads samples from the sound pool.
979     *  This method can be called to free some memory when
980     *  sound effects are disabled.
981     */
982    public void unloadSoundEffects() {
983        synchronized (mSoundEffectsLock) {
984            if (mSoundPool == null) {
985                return;
986            }
987
988            mAudioHandler.removeMessages(MSG_PLAY_SOUND_EFFECT);
989
990            int[] poolId = new int[SOUND_EFFECT_FILES.length];
991            for (int fileIdx = 0; fileIdx < SOUND_EFFECT_FILES.length; fileIdx++) {
992                poolId[fileIdx] = 0;
993            }
994
995            for (int effect = 0; effect < AudioManager.NUM_SOUND_EFFECTS; effect++) {
996                if (SOUND_EFFECT_FILES_MAP[effect][1] <= 0) {
997                    continue;
998                }
999                if (poolId[SOUND_EFFECT_FILES_MAP[effect][0]] == 0) {
1000                    mSoundPool.unload(SOUND_EFFECT_FILES_MAP[effect][1]);
1001                    SOUND_EFFECT_FILES_MAP[effect][1] = -1;
1002                    poolId[SOUND_EFFECT_FILES_MAP[effect][0]] = -1;
1003                }
1004            }
1005            mSoundPool.release();
1006            mSoundPool = null;
1007        }
1008    }
1009
1010    class SoundPoolListenerThread extends Thread {
1011        public SoundPoolListenerThread() {
1012            super("SoundPoolListenerThread");
1013        }
1014
1015        @Override
1016        public void run() {
1017
1018            Looper.prepare();
1019            mSoundPoolLooper = Looper.myLooper();
1020
1021            synchronized (mSoundEffectsLock) {
1022                if (mSoundPool != null) {
1023                    mSoundPoolCallBack = new SoundPoolCallback();
1024                    mSoundPool.setOnLoadCompleteListener(mSoundPoolCallBack);
1025                }
1026                mSoundEffectsLock.notify();
1027            }
1028            Looper.loop();
1029        }
1030    }
1031
1032    private final class SoundPoolCallback implements
1033            android.media.SoundPool.OnLoadCompleteListener {
1034
1035        int mStatus;
1036        int mLastSample;
1037
1038        public int status() {
1039            return mStatus;
1040        }
1041
1042        public void setLastSample(int sample) {
1043            mLastSample = sample;
1044        }
1045
1046        public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
1047            synchronized (mSoundEffectsLock) {
1048                if (status != 0) {
1049                    mStatus = status;
1050                }
1051                if (sampleId == mLastSample) {
1052                    Log.e(TAG, "onLoadComplete last sample loaded");
1053                    mSoundEffectsLock.notify();
1054                }
1055            }
1056        }
1057    }
1058
1059    /** @see AudioManager#reloadAudioSettings() */
1060    public void reloadAudioSettings() {
1061        // restore ringer mode, ringer mode affected streams, mute affected streams and vibrate settings
1062        readPersistedSettings();
1063
1064        // restore volume settings
1065        int numStreamTypes = AudioSystem.getNumStreamTypes();
1066        for (int streamType = 0; streamType < numStreamTypes; streamType++) {
1067            VolumeStreamState streamState = mStreamStates[streamType];
1068
1069            String settingName = System.VOLUME_SETTINGS[STREAM_VOLUME_ALIAS[streamType]];
1070            String lastAudibleSettingName = settingName + System.APPEND_FOR_LAST_AUDIBLE;
1071            int index = Settings.System.getInt(mContentResolver,
1072                                           settingName,
1073                                           AudioManager.DEFAULT_STREAM_VOLUME[streamType]);
1074            if (STREAM_VOLUME_ALIAS[streamType] != streamType) {
1075                index = rescaleIndex(index * 10, STREAM_VOLUME_ALIAS[streamType], streamType);
1076            } else {
1077                index *= 10;
1078            }
1079            streamState.mIndex = streamState.getValidIndex(index);
1080
1081            index = (index + 5) / 10;
1082            index = Settings.System.getInt(mContentResolver,
1083                                            lastAudibleSettingName,
1084                                            (index > 0) ? index : AudioManager.DEFAULT_STREAM_VOLUME[streamType]);
1085            if (STREAM_VOLUME_ALIAS[streamType] != streamType) {
1086                index = rescaleIndex(index * 10, STREAM_VOLUME_ALIAS[streamType], streamType);
1087            } else {
1088                index *= 10;
1089            }
1090            streamState.mLastAudibleIndex = streamState.getValidIndex(index);
1091
1092            // unmute stream that was muted but is not affect by mute anymore
1093            if (streamState.muteCount() != 0 && !isStreamAffectedByMute(streamType)) {
1094                int size = streamState.mDeathHandlers.size();
1095                for (int i = 0; i < size; i++) {
1096                    streamState.mDeathHandlers.get(i).mMuteCount = 1;
1097                    streamState.mDeathHandlers.get(i).mute(false);
1098                }
1099            }
1100            // apply stream volume
1101            if (streamState.muteCount() == 0) {
1102                setStreamVolumeIndex(streamType, streamState.mIndex);
1103            }
1104        }
1105
1106        // apply new ringer mode
1107        setRingerModeInt(getRingerMode(), false);
1108    }
1109
1110    /** @see AudioManager#setSpeakerphoneOn() */
1111    public void setSpeakerphoneOn(boolean on){
1112        if (!checkAudioSettingsPermission("setSpeakerphoneOn()")) {
1113            return;
1114        }
1115        if (on) {
1116            AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_SPEAKER);
1117            mForcedUseForComm = AudioSystem.FORCE_SPEAKER;
1118        } else {
1119            AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_NONE);
1120            mForcedUseForComm = AudioSystem.FORCE_NONE;
1121        }
1122    }
1123
1124    /** @see AudioManager#isSpeakerphoneOn() */
1125    public boolean isSpeakerphoneOn() {
1126        if (mForcedUseForComm == AudioSystem.FORCE_SPEAKER) {
1127            return true;
1128        } else {
1129            return false;
1130        }
1131    }
1132
1133    /** @see AudioManager#setBluetoothScoOn() */
1134    public void setBluetoothScoOn(boolean on){
1135        if (!checkAudioSettingsPermission("setBluetoothScoOn()")) {
1136            return;
1137        }
1138        if (on) {
1139            AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_BT_SCO);
1140            AudioSystem.setForceUse(AudioSystem.FOR_RECORD, AudioSystem.FORCE_BT_SCO);
1141            mForcedUseForComm = AudioSystem.FORCE_BT_SCO;
1142        } else {
1143            AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, AudioSystem.FORCE_NONE);
1144            AudioSystem.setForceUse(AudioSystem.FOR_RECORD, AudioSystem.FORCE_NONE);
1145            mForcedUseForComm = AudioSystem.FORCE_NONE;
1146        }
1147    }
1148
1149    /** @see AudioManager#isBluetoothScoOn() */
1150    public boolean isBluetoothScoOn() {
1151        if (mForcedUseForComm == AudioSystem.FORCE_BT_SCO) {
1152            return true;
1153        } else {
1154            return false;
1155        }
1156    }
1157
1158    /** @see AudioManager#startBluetoothSco() */
1159    public void startBluetoothSco(IBinder cb){
1160        if (!checkAudioSettingsPermission("startBluetoothSco()")) {
1161            return;
1162        }
1163        ScoClient client = getScoClient(cb);
1164        client.incCount();
1165    }
1166
1167    /** @see AudioManager#stopBluetoothSco() */
1168    public void stopBluetoothSco(IBinder cb){
1169        if (!checkAudioSettingsPermission("stopBluetoothSco()")) {
1170            return;
1171        }
1172        ScoClient client = getScoClient(cb);
1173        client.decCount();
1174    }
1175
1176    private class ScoClient implements IBinder.DeathRecipient {
1177        private IBinder mCb; // To be notified of client's death
1178        private int mStartcount; // number of SCO connections started by this client
1179
1180        ScoClient(IBinder cb) {
1181            mCb = cb;
1182            mStartcount = 0;
1183        }
1184
1185        public void binderDied() {
1186            synchronized(mScoClients) {
1187                Log.w(TAG, "SCO client died");
1188                int index = mScoClients.indexOf(this);
1189                if (index < 0) {
1190                    Log.w(TAG, "unregistered SCO client died");
1191                } else {
1192                    clearCount(true);
1193                    mScoClients.remove(this);
1194                }
1195            }
1196        }
1197
1198        public void incCount() {
1199            synchronized(mScoClients) {
1200                requestScoState(BluetoothHeadset.STATE_AUDIO_CONNECTED);
1201                if (mStartcount == 0) {
1202                    try {
1203                        mCb.linkToDeath(this, 0);
1204                    } catch (RemoteException e) {
1205                        // client has already died!
1206                        Log.w(TAG, "ScoClient  incCount() could not link to "+mCb+" binder death");
1207                    }
1208                }
1209                mStartcount++;
1210            }
1211        }
1212
1213        public void decCount() {
1214            synchronized(mScoClients) {
1215                if (mStartcount == 0) {
1216                    Log.w(TAG, "ScoClient.decCount() already 0");
1217                } else {
1218                    mStartcount--;
1219                    if (mStartcount == 0) {
1220                        try {
1221                            mCb.unlinkToDeath(this, 0);
1222                        } catch (NoSuchElementException e) {
1223                            Log.w(TAG, "decCount() going to 0 but not registered to binder");
1224                        }
1225                    }
1226                    requestScoState(BluetoothHeadset.STATE_AUDIO_DISCONNECTED);
1227                }
1228            }
1229        }
1230
1231        public void clearCount(boolean stopSco) {
1232            synchronized(mScoClients) {
1233                if (mStartcount != 0) {
1234                    try {
1235                        mCb.unlinkToDeath(this, 0);
1236                    } catch (NoSuchElementException e) {
1237                        Log.w(TAG, "clearCount() mStartcount: "+mStartcount+" != 0 but not registered to binder");
1238                    }
1239                }
1240                mStartcount = 0;
1241                if (stopSco) {
1242                    requestScoState(BluetoothHeadset.STATE_AUDIO_DISCONNECTED);
1243                }
1244            }
1245        }
1246
1247        public int getCount() {
1248            return mStartcount;
1249        }
1250
1251        public IBinder getBinder() {
1252            return mCb;
1253        }
1254
1255        public int totalCount() {
1256            synchronized(mScoClients) {
1257                int count = 0;
1258                int size = mScoClients.size();
1259                for (int i = 0; i < size; i++) {
1260                    count += mScoClients.get(i).getCount();
1261                }
1262                return count;
1263            }
1264        }
1265
1266        private void requestScoState(int state) {
1267            if (mBluetoothHeadset == null) {
1268                return;
1269            }
1270
1271            checkScoAudioState();
1272
1273            if (totalCount() == 0 &&
1274                mBluetoothHeadsetDevice != null) {
1275                // Accept SCO audio activation only in NORMAL audio mode or if the mode is
1276                // currently controlled by the same client.
1277                if ((AudioService.this.mMode == AudioSystem.MODE_NORMAL ||
1278                        mSetModeDeathHandlers.get(0).getBinder() == mCb) &&
1279                        state == BluetoothHeadset.STATE_AUDIO_CONNECTED &&
1280                        mScoAudioState == SCO_STATE_INACTIVE) {
1281                    mScoAudioState = SCO_STATE_ACTIVE_INTERNAL;
1282                    mBluetoothHeadset.startVirtualVoiceCall(mBluetoothHeadsetDevice);
1283                } else if (state == BluetoothHeadset.STATE_AUDIO_DISCONNECTED &&
1284                        mScoAudioState == SCO_STATE_ACTIVE_INTERNAL){
1285                    mBluetoothHeadset.stopVirtualVoiceCall(mBluetoothHeadsetDevice);
1286                }
1287            }
1288        }
1289    }
1290
1291    private void checkScoAudioState() {
1292        if (mBluetoothHeadset != null && mBluetoothHeadsetDevice != null &&
1293                mScoAudioState != SCO_STATE_ACTIVE_INTERNAL &&
1294                mBluetoothHeadset.getAudioState(mBluetoothHeadsetDevice)
1295                != BluetoothHeadset.STATE_AUDIO_DISCONNECTED) {
1296            mScoAudioState = SCO_STATE_ACTIVE_EXTERNAL;
1297        }
1298    }
1299
1300    public ScoClient getScoClient(IBinder cb) {
1301        synchronized(mScoClients) {
1302            ScoClient client;
1303            int size = mScoClients.size();
1304            for (int i = 0; i < size; i++) {
1305                client = mScoClients.get(i);
1306                if (client.getBinder() == cb)
1307                    return client;
1308            }
1309            client = new ScoClient(cb);
1310            mScoClients.add(client);
1311            return client;
1312        }
1313    }
1314
1315    public void clearAllScoClients(IBinder exceptBinder, boolean stopSco) {
1316        synchronized(mScoClients) {
1317            int size = mScoClients.size();
1318            for (int i = 0; i < size; i++) {
1319                if (mScoClients.get(i).getBinder() != exceptBinder)
1320                    mScoClients.get(i).clearCount(stopSco);
1321            }
1322        }
1323    }
1324
1325    private BluetoothProfile.ServiceListener mBluetoothProfileServiceListener =
1326        new BluetoothProfile.ServiceListener() {
1327        public void onServiceConnected(int profile, BluetoothProfile proxy) {
1328            synchronized (mScoClients) {
1329                mBluetoothHeadset = (BluetoothHeadset) proxy;
1330                List<BluetoothDevice> deviceList = mBluetoothHeadset.getConnectedDevices();
1331                if (deviceList.size() > 0) {
1332                    mBluetoothHeadsetDevice = deviceList.get(0);
1333                } else {
1334                    mBluetoothHeadsetDevice = null;
1335                }
1336            }
1337        }
1338        public void onServiceDisconnected(int profile) {
1339            synchronized (mScoClients) {
1340                if (mBluetoothHeadset != null) {
1341                    List<BluetoothDevice> devices = mBluetoothHeadset.getConnectedDevices();
1342                    if (devices.size() == 0) {
1343                        mBluetoothHeadsetDevice = null;
1344                        clearAllScoClients(null, false);
1345                        mScoAudioState = SCO_STATE_INACTIVE;
1346                    }
1347                    mBluetoothHeadset = null;
1348                }
1349            }
1350        }
1351    };
1352
1353    ///////////////////////////////////////////////////////////////////////////
1354    // Internal methods
1355    ///////////////////////////////////////////////////////////////////////////
1356
1357    /**
1358     * Checks if the adjustment should change ringer mode instead of just
1359     * adjusting volume. If so, this will set the proper ringer mode and volume
1360     * indices on the stream states.
1361     */
1362    private boolean checkForRingerModeChange(int oldIndex, int direction) {
1363        boolean adjustVolumeIndex = true;
1364        int newRingerMode = mRingerMode;
1365
1366        if (mRingerMode == AudioManager.RINGER_MODE_NORMAL) {
1367            // audible mode, at the bottom of the scale
1368            if (direction == AudioManager.ADJUST_LOWER
1369                    && (oldIndex + 5) / 10 == 1) {
1370                // "silent mode", but which one?
1371                newRingerMode = System.getInt(mContentResolver, System.VIBRATE_IN_SILENT, 1) == 1
1372                    ? AudioManager.RINGER_MODE_VIBRATE
1373                    : AudioManager.RINGER_MODE_SILENT;
1374            }
1375        } else {
1376            if (direction == AudioManager.ADJUST_RAISE) {
1377                // exiting silent mode
1378                newRingerMode = AudioManager.RINGER_MODE_NORMAL;
1379            } else {
1380                // prevent last audible index to reach 0
1381                adjustVolumeIndex = false;
1382            }
1383        }
1384
1385        if (newRingerMode != mRingerMode) {
1386            setRingerMode(newRingerMode);
1387
1388            /*
1389             * If we are changing ringer modes, do not increment/decrement the
1390             * volume index. Instead, the handler for the message above will
1391             * take care of changing the index.
1392             */
1393            adjustVolumeIndex = false;
1394        }
1395
1396        return adjustVolumeIndex;
1397    }
1398
1399    public boolean isStreamAffectedByRingerMode(int streamType) {
1400        return (mRingerModeAffectedStreams & (1 << streamType)) != 0;
1401    }
1402
1403    private boolean isStreamMutedByRingerMode(int streamType) {
1404        return (mRingerModeMutedStreams & (1 << streamType)) != 0;
1405    }
1406
1407    public boolean isStreamAffectedByMute(int streamType) {
1408        return (mMuteAffectedStreams & (1 << streamType)) != 0;
1409    }
1410
1411    private void ensureValidDirection(int direction) {
1412        if (direction < AudioManager.ADJUST_LOWER || direction > AudioManager.ADJUST_RAISE) {
1413            throw new IllegalArgumentException("Bad direction " + direction);
1414        }
1415    }
1416
1417    private void ensureValidStreamType(int streamType) {
1418        if (streamType < 0 || streamType >= mStreamStates.length) {
1419            throw new IllegalArgumentException("Bad stream type " + streamType);
1420        }
1421    }
1422
1423    private int getActiveStreamType(int suggestedStreamType) {
1424        boolean isOffhook = false;
1425        try {
1426            ITelephony phone = ITelephony.Stub.asInterface(ServiceManager.checkService("phone"));
1427            if (phone != null) isOffhook = phone.isOffhook();
1428        } catch (RemoteException e) {
1429            Log.w(TAG, "Couldn't connect to phone service", e);
1430        }
1431
1432        if (AudioSystem.getForceUse(AudioSystem.FOR_COMMUNICATION) == AudioSystem.FORCE_BT_SCO) {
1433            // Log.v(TAG, "getActiveStreamType: Forcing STREAM_BLUETOOTH_SCO...");
1434            return AudioSystem.STREAM_BLUETOOTH_SCO;
1435        } else if (isOffhook || AudioSystem.isStreamActive(AudioSystem.STREAM_VOICE_CALL)) {
1436            // Log.v(TAG, "getActiveStreamType: Forcing STREAM_VOICE_CALL...");
1437            return AudioSystem.STREAM_VOICE_CALL;
1438        } else if (AudioSystem.isStreamActive(AudioSystem.STREAM_MUSIC)) {
1439            // Log.v(TAG, "getActiveStreamType: Forcing STREAM_MUSIC...");
1440            return AudioSystem.STREAM_MUSIC;
1441        } else if (suggestedStreamType == AudioManager.USE_DEFAULT_STREAM_TYPE) {
1442            if (mVoiceCapable) {
1443                // Log.v(TAG, "getActiveStreamType: Forcing STREAM_RING..."
1444                //        + " b/c USE_DEFAULT_STREAM_TYPE...");
1445                return AudioSystem.STREAM_RING;
1446            } else {
1447                // Log.v(TAG, "getActiveStreamType: Forcing STREAM_MUSIC "
1448                //        + " b/c USE_DEFAULT_STREAM_TYPE...");
1449                return AudioSystem.STREAM_MUSIC;
1450            }
1451        } else {
1452            // Log.v(TAG, "getActiveStreamType: Returning suggested type " + suggestedStreamType);
1453            return suggestedStreamType;
1454        }
1455    }
1456
1457    private void broadcastRingerMode() {
1458        // Send sticky broadcast
1459        Intent broadcast = new Intent(AudioManager.RINGER_MODE_CHANGED_ACTION);
1460        broadcast.putExtra(AudioManager.EXTRA_RINGER_MODE, mRingerMode);
1461        broadcast.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY_BEFORE_BOOT
1462                | Intent.FLAG_RECEIVER_REPLACE_PENDING);
1463        long origCallerIdentityToken = Binder.clearCallingIdentity();
1464        mContext.sendStickyBroadcast(broadcast);
1465        Binder.restoreCallingIdentity(origCallerIdentityToken);
1466    }
1467
1468    private void broadcastVibrateSetting(int vibrateType) {
1469        // Send broadcast
1470        if (ActivityManagerNative.isSystemReady()) {
1471            Intent broadcast = new Intent(AudioManager.VIBRATE_SETTING_CHANGED_ACTION);
1472            broadcast.putExtra(AudioManager.EXTRA_VIBRATE_TYPE, vibrateType);
1473            broadcast.putExtra(AudioManager.EXTRA_VIBRATE_SETTING, getVibrateSetting(vibrateType));
1474            mContext.sendBroadcast(broadcast);
1475        }
1476    }
1477
1478    // Message helper methods
1479    private static int getMsg(int baseMsg, int streamType) {
1480        return (baseMsg & 0xffff) | streamType << 16;
1481    }
1482
1483    private static int getMsgBase(int msg) {
1484        return msg & 0xffff;
1485    }
1486
1487    private static void sendMsg(Handler handler, int baseMsg, int streamType,
1488            int existingMsgPolicy, int arg1, int arg2, Object obj, int delay) {
1489        int msg = (streamType == SHARED_MSG) ? baseMsg : getMsg(baseMsg, streamType);
1490
1491        if (existingMsgPolicy == SENDMSG_REPLACE) {
1492            handler.removeMessages(msg);
1493        } else if (existingMsgPolicy == SENDMSG_NOOP && handler.hasMessages(msg)) {
1494            return;
1495        }
1496
1497        handler
1498                .sendMessageDelayed(handler.obtainMessage(msg, arg1, arg2, obj), delay);
1499    }
1500
1501    boolean checkAudioSettingsPermission(String method) {
1502        if (mContext.checkCallingOrSelfPermission("android.permission.MODIFY_AUDIO_SETTINGS")
1503                == PackageManager.PERMISSION_GRANTED) {
1504            return true;
1505        }
1506        String msg = "Audio Settings Permission Denial: " + method + " from pid="
1507                + Binder.getCallingPid()
1508                + ", uid=" + Binder.getCallingUid();
1509        Log.w(TAG, msg);
1510        return false;
1511    }
1512
1513
1514    ///////////////////////////////////////////////////////////////////////////
1515    // Inner classes
1516    ///////////////////////////////////////////////////////////////////////////
1517
1518    public class VolumeStreamState {
1519        private final int mStreamType;
1520
1521        private String mVolumeIndexSettingName;
1522        private String mLastAudibleVolumeIndexSettingName;
1523        private int mIndexMax;
1524        private int mIndex;
1525        private int mLastAudibleIndex;
1526        private ArrayList<VolumeDeathHandler> mDeathHandlers; //handles mute/solo requests client death
1527
1528        private VolumeStreamState(String settingName, int streamType) {
1529
1530            setVolumeIndexSettingName(settingName);
1531
1532            mStreamType = streamType;
1533
1534            final ContentResolver cr = mContentResolver;
1535            mIndexMax = MAX_STREAM_VOLUME[streamType];
1536            mIndex = Settings.System.getInt(cr,
1537                                            mVolumeIndexSettingName,
1538                                            AudioManager.DEFAULT_STREAM_VOLUME[streamType]);
1539            mLastAudibleIndex = Settings.System.getInt(cr,
1540                                                       mLastAudibleVolumeIndexSettingName,
1541                                                       (mIndex > 0) ? mIndex : AudioManager.DEFAULT_STREAM_VOLUME[streamType]);
1542            AudioSystem.initStreamVolume(streamType, 0, mIndexMax);
1543            mIndexMax *= 10;
1544            mIndex = getValidIndex(10 * mIndex);
1545            mLastAudibleIndex = getValidIndex(10 * mLastAudibleIndex);
1546            setStreamVolumeIndex(streamType, mIndex);
1547            mDeathHandlers = new ArrayList<VolumeDeathHandler>();
1548        }
1549
1550        public void setVolumeIndexSettingName(String settingName) {
1551            mVolumeIndexSettingName = settingName;
1552            mLastAudibleVolumeIndexSettingName = settingName + System.APPEND_FOR_LAST_AUDIBLE;
1553        }
1554
1555        public boolean adjustIndex(int deltaIndex) {
1556            return setIndex(mIndex + deltaIndex * 10, true);
1557        }
1558
1559        public boolean setIndex(int index, boolean lastAudible) {
1560            int oldIndex = mIndex;
1561            mIndex = getValidIndex(index);
1562
1563            if (oldIndex != mIndex) {
1564                if (lastAudible) {
1565                    mLastAudibleIndex = mIndex;
1566                }
1567                // Apply change to all streams using this one as alias
1568                int numStreamTypes = AudioSystem.getNumStreamTypes();
1569                for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) {
1570                    if (streamType != mStreamType && STREAM_VOLUME_ALIAS[streamType] == mStreamType) {
1571                        mStreamStates[streamType].setIndex(rescaleIndex(mIndex, mStreamType, streamType), lastAudible);
1572                    }
1573                }
1574                return true;
1575            } else {
1576                return false;
1577            }
1578        }
1579
1580        public void setLastAudibleIndex(int index) {
1581            mLastAudibleIndex = getValidIndex(index);
1582        }
1583
1584        public void adjustLastAudibleIndex(int deltaIndex) {
1585            setLastAudibleIndex(mLastAudibleIndex + deltaIndex * 10);
1586        }
1587
1588        public int getMaxIndex() {
1589            return mIndexMax;
1590        }
1591
1592        public void mute(IBinder cb, boolean state) {
1593            VolumeDeathHandler handler = getDeathHandler(cb, state);
1594            if (handler == null) {
1595                Log.e(TAG, "Could not get client death handler for stream: "+mStreamType);
1596                return;
1597            }
1598            handler.mute(state);
1599        }
1600
1601        private int getValidIndex(int index) {
1602            if (index < 0) {
1603                return 0;
1604            } else if (index > mIndexMax) {
1605                return mIndexMax;
1606            }
1607
1608            return index;
1609        }
1610
1611        private class VolumeDeathHandler implements IBinder.DeathRecipient {
1612            private IBinder mICallback; // To be notified of client's death
1613            private int mMuteCount; // Number of active mutes for this client
1614
1615            VolumeDeathHandler(IBinder cb) {
1616                mICallback = cb;
1617            }
1618
1619            public void mute(boolean state) {
1620                synchronized(mDeathHandlers) {
1621                    if (state) {
1622                        if (mMuteCount == 0) {
1623                            // Register for client death notification
1624                            try {
1625                                // mICallback can be 0 if muted by AudioService
1626                                if (mICallback != null) {
1627                                    mICallback.linkToDeath(this, 0);
1628                                }
1629                                mDeathHandlers.add(this);
1630                                // If the stream is not yet muted by any client, set lvel to 0
1631                                if (muteCount() == 0) {
1632                                    setIndex(0, false);
1633                                    sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, mStreamType, SENDMSG_NOOP, 0, 0,
1634                                            VolumeStreamState.this, 0);
1635                                }
1636                            } catch (RemoteException e) {
1637                                // Client has died!
1638                                binderDied();
1639                                mDeathHandlers.notify();
1640                                return;
1641                            }
1642                        } else {
1643                            Log.w(TAG, "stream: "+mStreamType+" was already muted by this client");
1644                        }
1645                        mMuteCount++;
1646                    } else {
1647                        if (mMuteCount == 0) {
1648                            Log.e(TAG, "unexpected unmute for stream: "+mStreamType);
1649                        } else {
1650                            mMuteCount--;
1651                            if (mMuteCount == 0) {
1652                                // Unregistr from client death notification
1653                                mDeathHandlers.remove(this);
1654                                // mICallback can be 0 if muted by AudioService
1655                                if (mICallback != null) {
1656                                    mICallback.unlinkToDeath(this, 0);
1657                                }
1658                                if (muteCount() == 0) {
1659                                    // If the stream is not muted any more, restore it's volume if
1660                                    // ringer mode allows it
1661                                    if (!isStreamAffectedByRingerMode(mStreamType) || mRingerMode == AudioManager.RINGER_MODE_NORMAL) {
1662                                        setIndex(mLastAudibleIndex, false);
1663                                        sendMsg(mAudioHandler, MSG_SET_SYSTEM_VOLUME, mStreamType, SENDMSG_NOOP, 0, 0,
1664                                                VolumeStreamState.this, 0);
1665                                    }
1666                                }
1667                            }
1668                        }
1669                    }
1670                    mDeathHandlers.notify();
1671                }
1672            }
1673
1674            public void binderDied() {
1675                Log.w(TAG, "Volume service client died for stream: "+mStreamType);
1676                if (mMuteCount != 0) {
1677                    // Reset all active mute requests from this client.
1678                    mMuteCount = 1;
1679                    mute(false);
1680                }
1681            }
1682        }
1683
1684        private int muteCount() {
1685            int count = 0;
1686            int size = mDeathHandlers.size();
1687            for (int i = 0; i < size; i++) {
1688                count += mDeathHandlers.get(i).mMuteCount;
1689            }
1690            return count;
1691        }
1692
1693        private VolumeDeathHandler getDeathHandler(IBinder cb, boolean state) {
1694            synchronized(mDeathHandlers) {
1695                VolumeDeathHandler handler;
1696                int size = mDeathHandlers.size();
1697                for (int i = 0; i < size; i++) {
1698                    handler = mDeathHandlers.get(i);
1699                    if (cb == handler.mICallback) {
1700                        return handler;
1701                    }
1702                }
1703                // If this is the first mute request for this client, create a new
1704                // client death handler. Otherwise, it is an out of sequence unmute request.
1705                if (state) {
1706                    handler = new VolumeDeathHandler(cb);
1707                } else {
1708                    Log.w(TAG, "stream was not muted by this client");
1709                    handler = null;
1710                }
1711                return handler;
1712            }
1713        }
1714    }
1715
1716    /** Thread that handles native AudioSystem control. */
1717    private class AudioSystemThread extends Thread {
1718        AudioSystemThread() {
1719            super("AudioService");
1720        }
1721
1722        @Override
1723        public void run() {
1724            // Set this thread up so the handler will work on it
1725            Looper.prepare();
1726
1727            synchronized(AudioService.this) {
1728                mAudioHandler = new AudioHandler();
1729
1730                // Notify that the handler has been created
1731                AudioService.this.notify();
1732            }
1733
1734            // Listen for volume change requests that are set by VolumePanel
1735            Looper.loop();
1736        }
1737    }
1738
1739    /** Handles internal volume messages in separate volume thread. */
1740    private class AudioHandler extends Handler {
1741
1742        private void setSystemVolume(VolumeStreamState streamState) {
1743
1744            // Adjust volume
1745            setStreamVolumeIndex(streamState.mStreamType, streamState.mIndex);
1746
1747            // Apply change to all streams using this one as alias
1748            int numStreamTypes = AudioSystem.getNumStreamTypes();
1749            for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) {
1750                if (streamType != streamState.mStreamType &&
1751                    STREAM_VOLUME_ALIAS[streamType] == streamState.mStreamType) {
1752                    setStreamVolumeIndex(streamType, mStreamStates[streamType].mIndex);
1753                }
1754            }
1755
1756            // Post a persist volume msg
1757            sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, streamState.mStreamType,
1758                    SENDMSG_REPLACE, 1, 1, streamState, PERSIST_DELAY);
1759        }
1760
1761        private void persistVolume(VolumeStreamState streamState, boolean current, boolean lastAudible) {
1762            if (current) {
1763                System.putInt(mContentResolver, streamState.mVolumeIndexSettingName,
1764                              (streamState.mIndex + 5)/ 10);
1765            }
1766            if (lastAudible) {
1767                System.putInt(mContentResolver, streamState.mLastAudibleVolumeIndexSettingName,
1768                    (streamState.mLastAudibleIndex + 5) / 10);
1769            }
1770        }
1771
1772        private void persistRingerMode() {
1773            System.putInt(mContentResolver, System.MODE_RINGER, mRingerMode);
1774        }
1775
1776        private void persistVibrateSetting() {
1777            System.putInt(mContentResolver, System.VIBRATE_ON, mVibrateSetting);
1778        }
1779
1780        private void playSoundEffect(int effectType, int volume) {
1781            synchronized (mSoundEffectsLock) {
1782                if (mSoundPool == null) {
1783                    return;
1784                }
1785                float volFloat;
1786                // use STREAM_MUSIC volume attenuated by 3 dB if volume is not specified by caller
1787                if (volume < 0) {
1788                    // Same linear to log conversion as in native AudioSystem::linearToLog() (AudioSystem.cpp)
1789                    float dBPerStep = (float)((0.5 * 100) / MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]);
1790                    int musicVolIndex = (mStreamStates[AudioSystem.STREAM_MUSIC].mIndex + 5) / 10;
1791                    float musicVoldB = dBPerStep * (musicVolIndex - MAX_STREAM_VOLUME[AudioSystem.STREAM_MUSIC]);
1792                    volFloat = (float)Math.pow(10, (musicVoldB - 3)/20);
1793                } else {
1794                    volFloat = (float) volume / 1000.0f;
1795                }
1796
1797                if (SOUND_EFFECT_FILES_MAP[effectType][1] > 0) {
1798                    mSoundPool.play(SOUND_EFFECT_FILES_MAP[effectType][1], volFloat, volFloat, 0, 0, 1.0f);
1799                } else {
1800                    MediaPlayer mediaPlayer = new MediaPlayer();
1801                    if (mediaPlayer != null) {
1802                        try {
1803                            String filePath = Environment.getRootDirectory() + SOUND_EFFECTS_PATH + SOUND_EFFECT_FILES[SOUND_EFFECT_FILES_MAP[effectType][0]];
1804                            mediaPlayer.setDataSource(filePath);
1805                            mediaPlayer.setAudioStreamType(AudioSystem.STREAM_SYSTEM);
1806                            mediaPlayer.prepare();
1807                            mediaPlayer.setVolume(volFloat, volFloat);
1808                            mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
1809                                public void onCompletion(MediaPlayer mp) {
1810                                    cleanupPlayer(mp);
1811                                }
1812                            });
1813                            mediaPlayer.setOnErrorListener(new OnErrorListener() {
1814                                public boolean onError(MediaPlayer mp, int what, int extra) {
1815                                    cleanupPlayer(mp);
1816                                    return true;
1817                                }
1818                            });
1819                            mediaPlayer.start();
1820                        } catch (IOException ex) {
1821                            Log.w(TAG, "MediaPlayer IOException: "+ex);
1822                        } catch (IllegalArgumentException ex) {
1823                            Log.w(TAG, "MediaPlayer IllegalArgumentException: "+ex);
1824                        } catch (IllegalStateException ex) {
1825                            Log.w(TAG, "MediaPlayer IllegalStateException: "+ex);
1826                        }
1827                    }
1828                }
1829            }
1830        }
1831
1832        private void cleanupPlayer(MediaPlayer mp) {
1833            if (mp != null) {
1834                try {
1835                    mp.stop();
1836                    mp.release();
1837                } catch (IllegalStateException ex) {
1838                    Log.w(TAG, "MediaPlayer IllegalStateException: "+ex);
1839                }
1840            }
1841        }
1842
1843        @Override
1844        public void handleMessage(Message msg) {
1845            int baseMsgWhat = getMsgBase(msg.what);
1846
1847            switch (baseMsgWhat) {
1848
1849                case MSG_SET_SYSTEM_VOLUME:
1850                    setSystemVolume((VolumeStreamState) msg.obj);
1851                    break;
1852
1853                case MSG_PERSIST_VOLUME:
1854                    persistVolume((VolumeStreamState) msg.obj, (msg.arg1 != 0), (msg.arg2 != 0));
1855                    break;
1856
1857                case MSG_PERSIST_RINGER_MODE:
1858                    persistRingerMode();
1859                    break;
1860
1861                case MSG_PERSIST_VIBRATE_SETTING:
1862                    persistVibrateSetting();
1863                    break;
1864
1865                case MSG_MEDIA_SERVER_DIED:
1866                    // Force creation of new IAudioflinger interface
1867                    if (!mMediaServerOk) {
1868                        Log.e(TAG, "Media server died.");
1869                        AudioSystem.isStreamActive(AudioSystem.STREAM_MUSIC);
1870                        sendMsg(mAudioHandler, MSG_MEDIA_SERVER_DIED, SHARED_MSG, SENDMSG_NOOP, 0, 0,
1871                                null, 500);
1872                    }
1873                    break;
1874
1875                case MSG_MEDIA_SERVER_STARTED:
1876                    Log.e(TAG, "Media server started.");
1877                    // indicate to audio HAL that we start the reconfiguration phase after a media
1878                    // server crash
1879                    // Note that MSG_MEDIA_SERVER_STARTED message is only received when the media server
1880                    // process restarts after a crash, not the first time it is started.
1881                    AudioSystem.setParameters("restarting=true");
1882
1883                    // Restore device connection states
1884                    Set set = mConnectedDevices.entrySet();
1885                    Iterator i = set.iterator();
1886                    while(i.hasNext()){
1887                        Map.Entry device = (Map.Entry)i.next();
1888                        AudioSystem.setDeviceConnectionState(((Integer)device.getKey()).intValue(),
1889                                                             AudioSystem.DEVICE_STATE_AVAILABLE,
1890                                                             (String)device.getValue());
1891                    }
1892
1893                    // Restore call state
1894                    AudioSystem.setPhoneState(mMode);
1895
1896                    // Restore forced usage for communcations and record
1897                    AudioSystem.setForceUse(AudioSystem.FOR_COMMUNICATION, mForcedUseForComm);
1898                    AudioSystem.setForceUse(AudioSystem.FOR_RECORD, mForcedUseForComm);
1899
1900                    // Restore stream volumes
1901                    int numStreamTypes = AudioSystem.getNumStreamTypes();
1902                    for (int streamType = numStreamTypes - 1; streamType >= 0; streamType--) {
1903                        int index;
1904                        VolumeStreamState streamState = mStreamStates[streamType];
1905                        AudioSystem.initStreamVolume(streamType, 0, (streamState.mIndexMax + 5) / 10);
1906                        if (streamState.muteCount() == 0) {
1907                            index = streamState.mIndex;
1908                        } else {
1909                            index = 0;
1910                        }
1911                        setStreamVolumeIndex(streamType, index);
1912                    }
1913
1914                    // Restore ringer mode
1915                    setRingerModeInt(getRingerMode(), false);
1916
1917                    // indicate the end of reconfiguration phase to audio HAL
1918                    AudioSystem.setParameters("restarting=false");
1919                    break;
1920
1921                case MSG_PLAY_SOUND_EFFECT:
1922                    playSoundEffect(msg.arg1, msg.arg2);
1923                    break;
1924
1925                case MSG_BTA2DP_DOCK_TIMEOUT:
1926                    // msg.obj  == address of BTA2DP device
1927                    makeA2dpDeviceUnavailableNow( (String) msg.obj );
1928                    break;
1929            }
1930        }
1931    }
1932
1933    private class SettingsObserver extends ContentObserver {
1934
1935        SettingsObserver() {
1936            super(new Handler());
1937            mContentResolver.registerContentObserver(Settings.System.getUriFor(
1938                Settings.System.MODE_RINGER_STREAMS_AFFECTED), false, this);
1939            mContentResolver.registerContentObserver(Settings.System.getUriFor(
1940                    Settings.System.NOTIFICATIONS_USE_RING_VOLUME), false, this);
1941        }
1942
1943        @Override
1944        public void onChange(boolean selfChange) {
1945            super.onChange(selfChange);
1946            synchronized (mSettingsLock) {
1947                int ringerModeAffectedStreams = Settings.System.getInt(mContentResolver,
1948                        Settings.System.MODE_RINGER_STREAMS_AFFECTED,
1949                        0);
1950                if (ringerModeAffectedStreams != mRingerModeAffectedStreams) {
1951                    /*
1952                     * Ensure all stream types that should be affected by ringer mode
1953                     * are in the proper state.
1954                     */
1955                    mRingerModeAffectedStreams = ringerModeAffectedStreams;
1956                    setRingerModeInt(getRingerMode(), false);
1957                }
1958
1959                int notificationsUseRingVolume = Settings.System.getInt(mContentResolver,
1960                        Settings.System.NOTIFICATIONS_USE_RING_VOLUME,
1961                        1);
1962                if (notificationsUseRingVolume != mNotificationsUseRingVolume) {
1963                    mNotificationsUseRingVolume = notificationsUseRingVolume;
1964                    if (mNotificationsUseRingVolume == 1) {
1965                        STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_RING;
1966                        mStreamStates[AudioSystem.STREAM_NOTIFICATION].setVolumeIndexSettingName(
1967                                System.VOLUME_SETTINGS[AudioSystem.STREAM_RING]);
1968                    } else {
1969                        STREAM_VOLUME_ALIAS[AudioSystem.STREAM_NOTIFICATION] = AudioSystem.STREAM_NOTIFICATION;
1970                        mStreamStates[AudioSystem.STREAM_NOTIFICATION].setVolumeIndexSettingName(
1971                                System.VOLUME_SETTINGS[AudioSystem.STREAM_NOTIFICATION]);
1972                        // Persist notification volume volume as it was not persisted while aliased to ring volume
1973                        //  and persist with no delay as there might be registered observers of the persisted
1974                        //  notification volume.
1975                        sendMsg(mAudioHandler, MSG_PERSIST_VOLUME, AudioSystem.STREAM_NOTIFICATION,
1976                                SENDMSG_REPLACE, 1, 1, mStreamStates[AudioSystem.STREAM_NOTIFICATION], 0);
1977                    }
1978                }
1979            }
1980        }
1981    }
1982
1983    private void makeA2dpDeviceAvailable(String address) {
1984        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP,
1985                AudioSystem.DEVICE_STATE_AVAILABLE,
1986                address);
1987        // Reset A2DP suspend state each time a new sink is connected
1988        AudioSystem.setParameters("A2dpSuspended=false");
1989        mConnectedDevices.put( new Integer(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP),
1990                address);
1991    }
1992
1993    private void makeA2dpDeviceUnavailableNow(String address) {
1994        Intent noisyIntent = new Intent(AudioManager.ACTION_AUDIO_BECOMING_NOISY);
1995        mContext.sendBroadcast(noisyIntent);
1996        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP,
1997                AudioSystem.DEVICE_STATE_UNAVAILABLE,
1998                address);
1999        mConnectedDevices.remove(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP);
2000    }
2001
2002    private void makeA2dpDeviceUnavailableLater(String address) {
2003        // prevent any activity on the A2DP audio output to avoid unwanted
2004        // reconnection of the sink.
2005        AudioSystem.setParameters("A2dpSuspended=true");
2006        // the device will be made unavailable later, so consider it disconnected right away
2007        mConnectedDevices.remove(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP);
2008        // send the delayed message to make the device unavailable later
2009        Message msg = mAudioHandler.obtainMessage(MSG_BTA2DP_DOCK_TIMEOUT, address);
2010        mAudioHandler.sendMessageDelayed(msg, BTA2DP_DOCK_TIMEOUT_MILLIS);
2011
2012    }
2013
2014    private void cancelA2dpDeviceTimeout() {
2015        mAudioHandler.removeMessages(MSG_BTA2DP_DOCK_TIMEOUT);
2016    }
2017
2018    private boolean hasScheduledA2dpDockTimeout() {
2019        return mAudioHandler.hasMessages(MSG_BTA2DP_DOCK_TIMEOUT);
2020    }
2021
2022    /* cache of the address of the last dock the device was connected to */
2023    private String mDockAddress;
2024
2025    /**
2026     * Receiver for misc intent broadcasts the Phone app cares about.
2027     */
2028    private class AudioServiceBroadcastReceiver extends BroadcastReceiver {
2029        @Override
2030        public void onReceive(Context context, Intent intent) {
2031            String action = intent.getAction();
2032
2033            if (action.equals(Intent.ACTION_DOCK_EVENT)) {
2034                int dockState = intent.getIntExtra(Intent.EXTRA_DOCK_STATE,
2035                        Intent.EXTRA_DOCK_STATE_UNDOCKED);
2036                int config;
2037                switch (dockState) {
2038                    case Intent.EXTRA_DOCK_STATE_DESK:
2039                        config = AudioSystem.FORCE_BT_DESK_DOCK;
2040                        break;
2041                    case Intent.EXTRA_DOCK_STATE_CAR:
2042                        config = AudioSystem.FORCE_BT_CAR_DOCK;
2043                        break;
2044                    case Intent.EXTRA_DOCK_STATE_LE_DESK:
2045                        config = AudioSystem.FORCE_ANALOG_DOCK;
2046                        break;
2047                    case Intent.EXTRA_DOCK_STATE_HE_DESK:
2048                        config = AudioSystem.FORCE_DIGITAL_DOCK;
2049                        break;
2050                    case Intent.EXTRA_DOCK_STATE_UNDOCKED:
2051                    default:
2052                        config = AudioSystem.FORCE_NONE;
2053                }
2054                AudioSystem.setForceUse(AudioSystem.FOR_DOCK, config);
2055            } else if (action.equals(BluetoothA2dp.ACTION_CONNECTION_STATE_CHANGED)) {
2056                int state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE,
2057                                               BluetoothProfile.STATE_DISCONNECTED);
2058                BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
2059                String address = btDevice.getAddress();
2060                boolean isConnected =
2061                    (mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP) &&
2062                     mConnectedDevices.get(AudioSystem.DEVICE_OUT_BLUETOOTH_A2DP).equals(address));
2063
2064                if (isConnected && state != BluetoothProfile.STATE_CONNECTED) {
2065                    if (btDevice.isBluetoothDock()) {
2066                        if (state == BluetoothProfile.STATE_DISCONNECTED) {
2067                            // introduction of a delay for transient disconnections of docks when
2068                            // power is rapidly turned off/on, this message will be canceled if
2069                            // we reconnect the dock under a preset delay
2070                            makeA2dpDeviceUnavailableLater(address);
2071                            // the next time isConnected is evaluated, it will be false for the dock
2072                        }
2073                    } else {
2074                        makeA2dpDeviceUnavailableNow(address);
2075                    }
2076                } else if (!isConnected && state == BluetoothProfile.STATE_CONNECTED) {
2077                    if (btDevice.isBluetoothDock()) {
2078                        // this could be a reconnection after a transient disconnection
2079                        cancelA2dpDeviceTimeout();
2080                        mDockAddress = address;
2081                    } else {
2082                        // this could be a connection of another A2DP device before the timeout of
2083                        // a dock: cancel the dock timeout, and make the dock unavailable now
2084                        if(hasScheduledA2dpDockTimeout()) {
2085                            cancelA2dpDeviceTimeout();
2086                            makeA2dpDeviceUnavailableNow(mDockAddress);
2087                        }
2088                    }
2089                    makeA2dpDeviceAvailable(address);
2090                }
2091            } else if (action.equals(BluetoothHeadset.ACTION_CONNECTION_STATE_CHANGED)) {
2092                int state = intent.getIntExtra(BluetoothProfile.EXTRA_STATE,
2093                                               BluetoothProfile.STATE_DISCONNECTED);
2094                int device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO;
2095                BluetoothDevice btDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
2096                String address = null;
2097                if (btDevice != null) {
2098                    address = btDevice.getAddress();
2099                    BluetoothClass btClass = btDevice.getBluetoothClass();
2100                    if (btClass != null) {
2101                        switch (btClass.getDeviceClass()) {
2102                        case BluetoothClass.Device.AUDIO_VIDEO_WEARABLE_HEADSET:
2103                        case BluetoothClass.Device.AUDIO_VIDEO_HANDSFREE:
2104                            device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_HEADSET;
2105                            break;
2106                        case BluetoothClass.Device.AUDIO_VIDEO_CAR_AUDIO:
2107                            device = AudioSystem.DEVICE_OUT_BLUETOOTH_SCO_CARKIT;
2108                            break;
2109                        }
2110                    }
2111                }
2112
2113                boolean isConnected = (mConnectedDevices.containsKey(device) &&
2114                                       mConnectedDevices.get(device).equals(address));
2115
2116                synchronized (mScoClients) {
2117                    if (isConnected && state != BluetoothProfile.STATE_CONNECTED) {
2118                        AudioSystem.setDeviceConnectionState(device,
2119                                                             AudioSystem.DEVICE_STATE_UNAVAILABLE,
2120                                                             address);
2121                        mConnectedDevices.remove(device);
2122                        mBluetoothHeadsetDevice = null;
2123                        clearAllScoClients(null, false);
2124                        mScoAudioState = SCO_STATE_INACTIVE;
2125                    } else if (!isConnected && state == BluetoothProfile.STATE_CONNECTED) {
2126                        AudioSystem.setDeviceConnectionState(device,
2127                                                             AudioSystem.DEVICE_STATE_AVAILABLE,
2128                                                             address);
2129                        mConnectedDevices.put(new Integer(device), address);
2130                        mBluetoothHeadsetDevice = btDevice;
2131                    }
2132                }
2133            } else if (action.equals(Intent.ACTION_HEADSET_PLUG)) {
2134                int state = intent.getIntExtra("state", 0);
2135                int microphone = intent.getIntExtra("microphone", 0);
2136
2137                if (microphone != 0) {
2138                    boolean isConnected =
2139                        mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_WIRED_HEADSET);
2140                    if (state == 0 && isConnected) {
2141                        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADSET,
2142                                AudioSystem.DEVICE_STATE_UNAVAILABLE,
2143                                "");
2144                        mConnectedDevices.remove(AudioSystem.DEVICE_OUT_WIRED_HEADSET);
2145                    } else if (state == 1 && !isConnected)  {
2146                        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADSET,
2147                                AudioSystem.DEVICE_STATE_AVAILABLE,
2148                                "");
2149                        mConnectedDevices.put(
2150                                new Integer(AudioSystem.DEVICE_OUT_WIRED_HEADSET), "");
2151                    }
2152                } else {
2153                    boolean isConnected =
2154                        mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE);
2155                    if (state == 0 && isConnected) {
2156                        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE,
2157                                AudioSystem.DEVICE_STATE_UNAVAILABLE,
2158                                "");
2159                        mConnectedDevices.remove(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE);
2160                    } else if (state == 1 && !isConnected)  {
2161                        AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE,
2162                                AudioSystem.DEVICE_STATE_AVAILABLE,
2163                                "");
2164                        mConnectedDevices.put(
2165                                new Integer(AudioSystem.DEVICE_OUT_WIRED_HEADPHONE), "");
2166                    }
2167                }
2168            } else if (action.equals(Intent.ACTION_USB_ANLG_HEADSET_PLUG)) {
2169                int state = intent.getIntExtra("state", 0);
2170                Log.v(TAG, "Broadcast Receiver: Got ACTION_USB_ANLG_HEADSET_PLUG, state = "+state);
2171                boolean isConnected =
2172                    mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET);
2173                if (state == 0 && isConnected) {
2174                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET,
2175                                                         AudioSystem.DEVICE_STATE_UNAVAILABLE, "");
2176                    mConnectedDevices.remove(AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET);
2177                } else if (state == 1 && !isConnected)  {
2178                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET,
2179                                                         AudioSystem.DEVICE_STATE_AVAILABLE, "");
2180                    mConnectedDevices.put(
2181                            new Integer(AudioSystem.DEVICE_OUT_ANLG_DOCK_HEADSET), "");
2182                }
2183            } else if (action.equals(Intent.ACTION_HDMI_AUDIO_PLUG)) {
2184                int state = intent.getIntExtra("state", 0);
2185                Log.v(TAG, "Broadcast Receiver: Got ACTION_HDMI_AUDIO_PLUG, state = "+state);
2186                boolean isConnected =
2187                    mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_AUX_DIGITAL);
2188                if (state == 0 && isConnected) {
2189                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_AUX_DIGITAL,
2190                                                         AudioSystem.DEVICE_STATE_UNAVAILABLE, "");
2191                    mConnectedDevices.remove(AudioSystem.DEVICE_OUT_AUX_DIGITAL);
2192                } else if (state == 1 && !isConnected)  {
2193                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_AUX_DIGITAL,
2194                                                         AudioSystem.DEVICE_STATE_AVAILABLE, "");
2195                    mConnectedDevices.put( new Integer(AudioSystem.DEVICE_OUT_AUX_DIGITAL), "");
2196                }
2197            } else if (action.equals(Intent.ACTION_USB_DGTL_HEADSET_PLUG)) {
2198                int state = intent.getIntExtra("state", 0);
2199                Log.v(TAG, "Broadcast Receiver: Got ACTION_USB_DGTL_HEADSET_PLUG, state = "+state);
2200                boolean isConnected =
2201                    mConnectedDevices.containsKey(AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET);
2202                if (state == 0 && isConnected) {
2203                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET,
2204                                                         AudioSystem.DEVICE_STATE_UNAVAILABLE, "");
2205                    mConnectedDevices.remove(AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET);
2206                } else if (state == 1 && !isConnected)  {
2207                    AudioSystem.setDeviceConnectionState(AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET,
2208                                                         AudioSystem.DEVICE_STATE_AVAILABLE, "");
2209                    mConnectedDevices.put(
2210                            new Integer(AudioSystem.DEVICE_OUT_DGTL_DOCK_HEADSET), "");
2211                }
2212            } else if (action.equals(BluetoothHeadset.ACTION_AUDIO_STATE_CHANGED)) {
2213                boolean broadcast = false;
2214                int audioState = AudioManager.SCO_AUDIO_STATE_ERROR;
2215                synchronized (mScoClients) {
2216                    int btState = intent.getIntExtra(BluetoothProfile.EXTRA_STATE, -1);
2217                    if (!mScoClients.isEmpty() && mScoAudioState == SCO_STATE_ACTIVE_INTERNAL) {
2218                        broadcast = true;
2219                    }
2220                    switch (btState) {
2221                    case BluetoothHeadset.STATE_AUDIO_CONNECTED:
2222                        audioState = AudioManager.SCO_AUDIO_STATE_CONNECTED;
2223                        if (mScoAudioState != SCO_STATE_ACTIVE_INTERNAL) {
2224                            mScoAudioState = SCO_STATE_ACTIVE_EXTERNAL;
2225                        }
2226                        break;
2227                    case BluetoothHeadset.STATE_AUDIO_DISCONNECTED:
2228                        audioState = AudioManager.SCO_AUDIO_STATE_DISCONNECTED;
2229                        mScoAudioState = SCO_STATE_INACTIVE;
2230                        break;
2231                    case BluetoothHeadset.STATE_AUDIO_CONNECTING:
2232                        if (mScoAudioState != SCO_STATE_ACTIVE_INTERNAL) {
2233                            mScoAudioState = SCO_STATE_ACTIVE_EXTERNAL;
2234                        }
2235                    default:
2236                        // do not broadcast CONNECTING or invalid state
2237                        broadcast = false;
2238                        break;
2239                    }
2240                }
2241                if (broadcast) {
2242                    Intent newIntent = new Intent(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED);
2243                    newIntent.putExtra(AudioManager.EXTRA_SCO_AUDIO_STATE, audioState);
2244                    mContext.sendStickyBroadcast(newIntent);
2245                }
2246            } else if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
2247                mBootCompleted = true;
2248                loadSoundEffects();
2249                Intent newIntent = new Intent(AudioManager.ACTION_SCO_AUDIO_STATE_CHANGED);
2250                newIntent.putExtra(AudioManager.EXTRA_SCO_AUDIO_STATE,
2251                        AudioManager.SCO_AUDIO_STATE_DISCONNECTED);
2252                mContext.sendStickyBroadcast(newIntent);
2253            }
2254        }
2255    }
2256
2257    //==========================================================================================
2258    // AudioFocus
2259    //==========================================================================================
2260
2261    /* constant to identify focus stack entry that is used to hold the focus while the phone
2262     * is ringing or during a call
2263     */
2264    private final static String IN_VOICE_COMM_FOCUS_ID = "AudioFocus_For_Phone_Ring_And_Calls";
2265
2266    private final static Object mAudioFocusLock = new Object();
2267
2268    private final static Object mRingingLock = new Object();
2269
2270    private PhoneStateListener mPhoneStateListener = new PhoneStateListener() {
2271        @Override
2272        public void onCallStateChanged(int state, String incomingNumber) {
2273            if (state == TelephonyManager.CALL_STATE_RINGING) {
2274                //Log.v(TAG, " CALL_STATE_RINGING");
2275                synchronized(mRingingLock) {
2276                    mIsRinging = true;
2277                }
2278            } else if ((state == TelephonyManager.CALL_STATE_OFFHOOK)
2279                    || (state == TelephonyManager.CALL_STATE_IDLE)) {
2280                synchronized(mRingingLock) {
2281                    mIsRinging = false;
2282                }
2283            }
2284        }
2285    };
2286
2287    private void notifyTopOfAudioFocusStack() {
2288        // notify the top of the stack it gained focus
2289        if (!mFocusStack.empty() && (mFocusStack.peek().mFocusDispatcher != null)) {
2290            if (canReassignAudioFocus()) {
2291                try {
2292                    mFocusStack.peek().mFocusDispatcher.dispatchAudioFocusChange(
2293                            AudioManager.AUDIOFOCUS_GAIN, mFocusStack.peek().mClientId);
2294                } catch (RemoteException e) {
2295                    Log.e(TAG, "Failure to signal gain of audio control focus due to "+ e);
2296                    e.printStackTrace();
2297                }
2298            }
2299        }
2300    }
2301
2302    private static class FocusStackEntry {
2303        public int mStreamType = -1;// no stream type
2304        public boolean mIsTransportControlReceiver = false;
2305        public IAudioFocusDispatcher mFocusDispatcher = null;
2306        public IBinder mSourceRef = null;
2307        public String mClientId;
2308        public int mFocusChangeType;
2309
2310        public FocusStackEntry() {
2311        }
2312
2313        public FocusStackEntry(int streamType, int duration, boolean isTransportControlReceiver,
2314                IAudioFocusDispatcher afl, IBinder source, String id) {
2315            mStreamType = streamType;
2316            mIsTransportControlReceiver = isTransportControlReceiver;
2317            mFocusDispatcher = afl;
2318            mSourceRef = source;
2319            mClientId = id;
2320            mFocusChangeType = duration;
2321        }
2322    }
2323
2324    private Stack<FocusStackEntry> mFocusStack = new Stack<FocusStackEntry>();
2325
2326    /**
2327     * Helper function:
2328     * Display in the log the current entries in the audio focus stack
2329     */
2330    private void dumpFocusStack(PrintWriter pw) {
2331        pw.println("\nAudio Focus stack entries:");
2332        synchronized(mAudioFocusLock) {
2333            Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator();
2334            while(stackIterator.hasNext()) {
2335                FocusStackEntry fse = stackIterator.next();
2336                pw.println("     source:" + fse.mSourceRef + " -- client: " + fse.mClientId
2337                        + " -- duration: " +fse.mFocusChangeType);
2338            }
2339        }
2340    }
2341
2342    /**
2343     * Helper function:
2344     * Remove a focus listener from the focus stack.
2345     * @param focusListenerToRemove the focus listener
2346     * @param signal if true and the listener was at the top of the focus stack, i.e. it was holding
2347     *   focus, notify the next item in the stack it gained focus.
2348     */
2349    private void removeFocusStackEntry(String clientToRemove, boolean signal) {
2350        // is the current top of the focus stack abandoning focus? (because of death or request)
2351        if (!mFocusStack.empty() && mFocusStack.peek().mClientId.equals(clientToRemove))
2352        {
2353            //Log.i(TAG, "   removeFocusStackEntry() removing top of stack");
2354            mFocusStack.pop();
2355            if (signal) {
2356                // notify the new top of the stack it gained focus
2357                notifyTopOfAudioFocusStack();
2358            }
2359        } else {
2360            // focus is abandoned by a client that's not at the top of the stack,
2361            // no need to update focus.
2362            Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator();
2363            while(stackIterator.hasNext()) {
2364                FocusStackEntry fse = (FocusStackEntry)stackIterator.next();
2365                if(fse.mClientId.equals(clientToRemove)) {
2366                    Log.i(TAG, " AudioFocus  abandonAudioFocus(): removing entry for "
2367                            + fse.mClientId);
2368                    mFocusStack.remove(fse);
2369                }
2370            }
2371        }
2372    }
2373
2374    /**
2375     * Helper function:
2376     * Remove focus listeners from the focus stack for a particular client.
2377     */
2378    private void removeFocusStackEntryForClient(IBinder cb) {
2379        // is the owner of the audio focus part of the client to remove?
2380        boolean isTopOfStackForClientToRemove = !mFocusStack.isEmpty() &&
2381                mFocusStack.peek().mSourceRef.equals(cb);
2382        Iterator<FocusStackEntry> stackIterator = mFocusStack.iterator();
2383        while(stackIterator.hasNext()) {
2384            FocusStackEntry fse = (FocusStackEntry)stackIterator.next();
2385            if(fse.mSourceRef.equals(cb)) {
2386                Log.i(TAG, " AudioFocus  abandonAudioFocus(): removing entry for "
2387                        + fse.mClientId);
2388                mFocusStack.remove(fse);
2389            }
2390        }
2391        if (isTopOfStackForClientToRemove) {
2392            // we removed an entry at the top of the stack:
2393            //  notify the new top of the stack it gained focus.
2394            notifyTopOfAudioFocusStack();
2395        }
2396    }
2397
2398    /**
2399     * Helper function:
2400     * Returns true if the system is in a state where the focus can be reevaluated, false otherwise.
2401     */
2402    private boolean canReassignAudioFocus() {
2403        // focus requests are rejected during a phone call or when the phone is ringing
2404        // this is equivalent to IN_VOICE_COMM_FOCUS_ID having the focus
2405        if (!mFocusStack.isEmpty() && IN_VOICE_COMM_FOCUS_ID.equals(mFocusStack.peek().mClientId)) {
2406            return false;
2407        }
2408        return true;
2409    }
2410
2411    /**
2412     * Inner class to monitor audio focus client deaths, and remove them from the audio focus
2413     * stack if necessary.
2414     */
2415    private class AudioFocusDeathHandler implements IBinder.DeathRecipient {
2416        private IBinder mCb; // To be notified of client's death
2417
2418        AudioFocusDeathHandler(IBinder cb) {
2419            mCb = cb;
2420        }
2421
2422        public void binderDied() {
2423            synchronized(mAudioFocusLock) {
2424                Log.w(TAG, "  AudioFocus   audio focus client died");
2425                removeFocusStackEntryForClient(mCb);
2426            }
2427        }
2428
2429        public IBinder getBinder() {
2430            return mCb;
2431        }
2432    }
2433
2434
2435    /** @see AudioManager#requestAudioFocus(IAudioFocusDispatcher, int, int) */
2436    public int requestAudioFocus(int mainStreamType, int focusChangeHint, IBinder cb,
2437            IAudioFocusDispatcher fd, String clientId) {
2438        Log.i(TAG, " AudioFocus  requestAudioFocus() from " + clientId);
2439        // the main stream type for the audio focus request is currently not used. It may
2440        // potentially be used to handle multiple stream type-dependent audio focuses.
2441
2442        // we need a valid binder callback for clients other than the AudioService's phone
2443        // state listener
2444        if (!IN_VOICE_COMM_FOCUS_ID.equals(clientId) && ((cb == null) || !cb.pingBinder())) {
2445            Log.i(TAG, " AudioFocus  DOA client for requestAudioFocus(), exiting");
2446            return AudioManager.AUDIOFOCUS_REQUEST_FAILED;
2447        }
2448
2449        synchronized(mAudioFocusLock) {
2450            if (!canReassignAudioFocus()) {
2451                return AudioManager.AUDIOFOCUS_REQUEST_FAILED;
2452            }
2453
2454            if (!mFocusStack.empty() && mFocusStack.peek().mClientId.equals(clientId)) {
2455                // if focus is already owned by this client and the reason for acquiring the focus
2456                // hasn't changed, don't do anything
2457                if (mFocusStack.peek().mFocusChangeType == focusChangeHint) {
2458                    return AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
2459                }
2460                // the reason for the audio focus request has changed: remove the current top of
2461                // stack and respond as if we had a new focus owner
2462                mFocusStack.pop();
2463            }
2464
2465            // notify current top of stack it is losing focus
2466            if (!mFocusStack.empty() && (mFocusStack.peek().mFocusDispatcher != null)) {
2467                try {
2468                    mFocusStack.peek().mFocusDispatcher.dispatchAudioFocusChange(
2469                            -1 * focusChangeHint, // loss and gain codes are inverse of each other
2470                            mFocusStack.peek().mClientId);
2471                } catch (RemoteException e) {
2472                    Log.e(TAG, " Failure to signal loss of focus due to "+ e);
2473                    e.printStackTrace();
2474                }
2475            }
2476
2477            // focus requester might already be somewhere below in the stack, remove it
2478            removeFocusStackEntry(clientId, false);
2479
2480            // push focus requester at the top of the audio focus stack
2481            mFocusStack.push(new FocusStackEntry(mainStreamType, focusChangeHint, false, fd, cb,
2482                    clientId));
2483        }//synchronized(mAudioFocusLock)
2484
2485        // handle the potential premature death of the new holder of the focus
2486        // (premature death == death before abandoning focus) for a client which is not the
2487        // AudioService's phone state listener
2488        if (!IN_VOICE_COMM_FOCUS_ID.equals(clientId)) {
2489            // Register for client death notification
2490            AudioFocusDeathHandler afdh = new AudioFocusDeathHandler(cb);
2491            try {
2492                cb.linkToDeath(afdh, 0);
2493            } catch (RemoteException e) {
2494                // client has already died!
2495                Log.w(TAG, "AudioFocus  requestAudioFocus() could not link to "+cb+" binder death");
2496            }
2497        }
2498
2499        return AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
2500    }
2501
2502    /** @see AudioManager#abandonAudioFocus(IAudioFocusDispatcher) */
2503    public int abandonAudioFocus(IAudioFocusDispatcher fl, String clientId) {
2504        Log.i(TAG, " AudioFocus  abandonAudioFocus() from " + clientId);
2505        try {
2506            // this will take care of notifying the new focus owner if needed
2507            synchronized(mAudioFocusLock) {
2508                removeFocusStackEntry(clientId, true);
2509            }
2510        } catch (java.util.ConcurrentModificationException cme) {
2511            // Catching this exception here is temporary. It is here just to prevent
2512            // a crash seen when the "Silent" notification is played. This is believed to be fixed
2513            // but this try catch block is left just to be safe.
2514            Log.e(TAG, "FATAL EXCEPTION AudioFocus  abandonAudioFocus() caused " + cme);
2515            cme.printStackTrace();
2516        }
2517
2518        return AudioManager.AUDIOFOCUS_REQUEST_GRANTED;
2519    }
2520
2521
2522    public void unregisterAudioFocusClient(String clientId) {
2523        synchronized(mAudioFocusLock) {
2524            removeFocusStackEntry(clientId, false);
2525        }
2526    }
2527
2528
2529    //==========================================================================================
2530    // RemoteControl
2531    //==========================================================================================
2532    /**
2533     * Receiver for media button intents. Handles the dispatching of the media button event
2534     * to one of the registered listeners, or if there was none, resumes the intent broadcast
2535     * to the rest of the system.
2536     */
2537    private class MediaButtonBroadcastReceiver extends BroadcastReceiver {
2538        @Override
2539        public void onReceive(Context context, Intent intent) {
2540            String action = intent.getAction();
2541            if (!Intent.ACTION_MEDIA_BUTTON.equals(action)) {
2542                return;
2543            }
2544            KeyEvent event = (KeyEvent) intent.getParcelableExtra(Intent.EXTRA_KEY_EVENT);
2545            if (event != null) {
2546                // if in a call or ringing, do not break the current phone app behavior
2547                // TODO modify this to let the phone app specifically get the RC focus
2548                //      add modify the phone app to take advantage of the new API
2549                synchronized(mRingingLock) {
2550                    if (mIsRinging || (getMode() == AudioSystem.MODE_IN_CALL) ||
2551                            (getMode() == AudioSystem.MODE_IN_COMMUNICATION) ||
2552                            (getMode() == AudioSystem.MODE_RINGTONE) ) {
2553                        return;
2554                    }
2555                }
2556                synchronized(mRCStack) {
2557                    if (!mRCStack.empty()) {
2558                        // create a new intent specifically aimed at the current registered listener
2559                        Intent targetedIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);
2560                        targetedIntent.putExtras(intent.getExtras());
2561                        targetedIntent.setComponent(mRCStack.peek().mReceiverComponent);
2562                        // trap the current broadcast
2563                        abortBroadcast();
2564                        //Log.v(TAG, " Sending intent" + targetedIntent);
2565                        context.sendBroadcast(targetedIntent, null);
2566                    }
2567                }
2568            }
2569        }
2570    }
2571
2572    private static class RemoteControlStackEntry {
2573        public ComponentName mReceiverComponent;// always non null
2574        // TODO implement registration expiration?
2575        //public int mRegistrationTime;
2576
2577        public RemoteControlStackEntry() {
2578        }
2579
2580        public RemoteControlStackEntry(ComponentName r) {
2581            mReceiverComponent = r;
2582        }
2583    }
2584
2585    private Stack<RemoteControlStackEntry> mRCStack = new Stack<RemoteControlStackEntry>();
2586
2587    /**
2588     * Helper function:
2589     * Display in the log the current entries in the remote control focus stack
2590     */
2591    private void dumpRCStack(PrintWriter pw) {
2592        pw.println("\nRemote Control stack entries:");
2593        synchronized(mRCStack) {
2594            Iterator<RemoteControlStackEntry> stackIterator = mRCStack.iterator();
2595            while(stackIterator.hasNext()) {
2596                RemoteControlStackEntry fse = stackIterator.next();
2597                pw.println("     receiver:" + fse.mReceiverComponent);
2598            }
2599        }
2600    }
2601
2602    /**
2603     * Helper function:
2604     * Set the new remote control receiver at the top of the RC focus stack
2605     */
2606    private void pushMediaButtonReceiver(ComponentName newReceiver) {
2607        // already at top of stack?
2608        if (!mRCStack.empty() && mRCStack.peek().mReceiverComponent.equals(newReceiver)) {
2609            return;
2610        }
2611        Iterator<RemoteControlStackEntry> stackIterator = mRCStack.iterator();
2612        while(stackIterator.hasNext()) {
2613            RemoteControlStackEntry rcse = (RemoteControlStackEntry)stackIterator.next();
2614            if(rcse.mReceiverComponent.equals(newReceiver)) {
2615                mRCStack.remove(rcse);
2616                break;
2617            }
2618        }
2619        mRCStack.push(new RemoteControlStackEntry(newReceiver));
2620    }
2621
2622    /**
2623     * Helper function:
2624     * Remove the remote control receiver from the RC focus stack
2625     */
2626    private void removeMediaButtonReceiver(ComponentName newReceiver) {
2627        Iterator<RemoteControlStackEntry> stackIterator = mRCStack.iterator();
2628        while(stackIterator.hasNext()) {
2629            RemoteControlStackEntry rcse = (RemoteControlStackEntry)stackIterator.next();
2630            if(rcse.mReceiverComponent.equals(newReceiver)) {
2631                mRCStack.remove(rcse);
2632                break;
2633            }
2634        }
2635    }
2636
2637
2638    /** see AudioManager.registerMediaButtonEventReceiver(ComponentName eventReceiver) */
2639    public void registerMediaButtonEventReceiver(ComponentName eventReceiver) {
2640        Log.i(TAG, "  Remote Control   registerMediaButtonEventReceiver() for " + eventReceiver);
2641
2642        synchronized(mRCStack) {
2643            pushMediaButtonReceiver(eventReceiver);
2644        }
2645    }
2646
2647    /** see AudioManager.unregisterMediaButtonEventReceiver(ComponentName eventReceiver) */
2648    public void unregisterMediaButtonEventReceiver(ComponentName eventReceiver) {
2649        Log.i(TAG, "  Remote Control   unregisterMediaButtonEventReceiver() for " + eventReceiver);
2650
2651        synchronized(mRCStack) {
2652            removeMediaButtonReceiver(eventReceiver);
2653        }
2654    }
2655
2656
2657    @Override
2658    protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) {
2659        // TODO probably a lot more to do here than just the audio focus and remote control stacks
2660        dumpFocusStack(pw);
2661        dumpRCStack(pw);
2662    }
2663
2664
2665}
2666