Avrcp.java revision 810d960162d74ba291a085ee2b11a37e7cbdace7 
1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.bluetooth.avrcp;
18
19import android.bluetooth.BluetoothA2dp;
20import android.bluetooth.BluetoothAvrcp;
21import android.bluetooth.BluetoothDevice;
22import android.content.BroadcastReceiver;
23import android.content.ComponentName;
24import android.content.Context;
25import android.content.Intent;
26import android.content.IntentFilter;
27import android.content.pm.ApplicationInfo;
28import android.content.pm.PackageManager;
29import android.content.pm.PackageManager.NameNotFoundException;
30import android.content.pm.ResolveInfo;
31import android.content.res.Resources;
32import android.content.SharedPreferences;
33import android.media.AudioManager;
34import android.media.MediaDescription;
35import android.media.MediaMetadata;
36import android.media.browse.MediaBrowser;
37import android.media.session.MediaSession;
38import android.media.session.MediaSession.QueueItem;
39import android.media.session.MediaSessionManager;
40import android.media.session.PlaybackState;
41import android.os.Bundle;
42import android.os.Handler;
43import android.os.HandlerThread;
44import android.os.Looper;
45import android.os.Message;
46import android.os.SystemClock;
47import android.os.UserManager;
48import android.util.Log;
49import android.view.KeyEvent;
50
51import com.android.bluetooth.btservice.ProfileService;
52import com.android.bluetooth.R;
53import com.android.bluetooth.Utils;
54
55import java.util.concurrent.CountDownLatch;
56import java.util.ArrayList;
57import java.util.HashMap;
58import java.util.Iterator;
59import java.util.List;
60import java.util.Map;
61import java.util.SortedMap;
62import java.util.TreeMap;
63
64/******************************************************************************
65 * support Bluetooth AVRCP profile. support metadata, play status, event
66 * notifications, address player selection and browse feature implementation.
67 ******************************************************************************/
68
69public final class Avrcp {
70    private static final boolean DEBUG = true;
71    private static final String TAG = "Avrcp";
72    private static final String ABSOLUTE_VOLUME_BLACKLIST = "absolute_volume_blacklist";
73
74    private Context mContext;
75    private final AudioManager mAudioManager;
76    private AvrcpMessageHandler mHandler;
77    private MediaSessionManager mMediaSessionManager;
78    private MediaController mMediaController;
79    private MediaControllerListener mMediaControllerCb;
80    private MediaAttributes mMediaAttributes;
81    private PackageManager mPackageManager;
82    private int mTransportControlFlags;
83    private PlaybackState mCurrentPlayState;
84    private long mLastStateUpdate;
85    private int mPlayStatusChangedNT;
86    private int mTrackChangedNT;
87    private int mPlayPosChangedNT;
88    private long mTracksPlayed;
89    private long mSongLengthMs;
90    private long mPlaybackIntervalMs;
91    private long mLastReportedPosition;
92    private long mNextPosMs;
93    private long mPrevPosMs;
94    private long mSkipStartTime;
95    private int mFeatures;
96    private int mRemoteVolume;
97    private int mLastRemoteVolume;
98    private int mInitialRemoteVolume;
99
100    /* Local volume in audio index 0-15 */
101    private int mLocalVolume;
102    private int mLastLocalVolume;
103    private int mAbsVolThreshold;
104
105    private String mAddress;
106    private HashMap<Integer, Integer> mVolumeMapping;
107
108    private int mLastDirection;
109    private final int mVolumeStep;
110    private final int mAudioStreamMax;
111    private boolean mVolCmdAdjustInProgress;
112    private boolean mVolCmdSetInProgress;
113    private int mAbsVolRetryTimes;
114    private int mSkipAmount;
115
116    private int mCurrAddrPlayerID;
117    private int mCurrBrowsePlayerID;
118    private int mLastUsedPlayerID;
119    private AvrcpMediaRsp mAvrcpMediaRsp;
120
121    /* UID counter to be shared across different files. */
122    static short sUIDCounter;
123
124    /* BTRC features */
125    public static final int BTRC_FEAT_METADATA = 0x01;
126    public static final int BTRC_FEAT_ABSOLUTE_VOLUME = 0x02;
127    public static final int BTRC_FEAT_BROWSE = 0x04;
128
129    /* AVRC response codes, from avrc_defs */
130    private static final int AVRC_RSP_NOT_IMPL = 8;
131    private static final int AVRC_RSP_ACCEPT = 9;
132    private static final int AVRC_RSP_REJ = 10;
133    private static final int AVRC_RSP_IN_TRANS = 11;
134    private static final int AVRC_RSP_IMPL_STBL = 12;
135    private static final int AVRC_RSP_CHANGED = 13;
136    private static final int AVRC_RSP_INTERIM = 15;
137
138    /* AVRC request commands from Native */
139    private static final int MSG_NATIVE_REQ_GET_RC_FEATURES = 1;
140    private static final int MSG_NATIVE_REQ_GET_PLAY_STATUS = 2;
141    private static final int MSG_NATIVE_REQ_GET_ELEM_ATTRS = 3;
142    private static final int MSG_NATIVE_REQ_REGISTER_NOTIFICATION = 4;
143    private static final int MSG_NATIVE_REQ_VOLUME_CHANGE = 5;
144    private static final int MSG_NATIVE_REQ_GET_FOLDER_ITEMS = 6;
145    private static final int MSG_NATIVE_REQ_SET_ADDR_PLAYER = 7;
146    private static final int MSG_NATIVE_REQ_SET_BR_PLAYER = 8;
147    private static final int MSG_NATIVE_REQ_CHANGE_PATH = 9;
148    private static final int MSG_NATIVE_REQ_PLAY_ITEM = 10;
149    private static final int MSG_NATIVE_REQ_GET_ITEM_ATTR = 11;
150    private static final int MSG_NATIVE_REQ_GET_TOTAL_NUM_OF_ITEMS = 12;
151    private static final int MSG_NATIVE_REQ_PASS_THROUGH = 13;
152
153    /* other AVRC messages */
154    private static final int MSG_PLAY_INTERVAL_TIMEOUT = 14;
155    private static final int MSG_ADJUST_VOLUME = 15;
156    private static final int MSG_SET_ABSOLUTE_VOLUME = 16;
157    private static final int MSG_ABS_VOL_TIMEOUT = 17;
158    private static final int MSG_FAST_FORWARD = 18;
159    private static final int MSG_REWIND = 19;
160    private static final int MSG_SET_A2DP_AUDIO_STATE = 20;
161    private static final int MSG_ADDRESSED_PLAYER_CHANGED_RSP = 21;
162    private static final int MSG_AVAILABLE_PLAYERS_CHANGED_RSP = 22;
163    private static final int MSG_NOW_PLAYING_CHANGED_RSP = 23;
164
165    private static final int CMD_TIMEOUT_DELAY = 2000;
166    private static final int MAX_ERROR_RETRY_TIMES = 6;
167    private static final int AVRCP_MAX_VOL = 127;
168    private static final int AVRCP_BASE_VOLUME_STEP = 1;
169
170    /* Communicates with MediaPlayer to fetch media content */
171    private BrowsedMediaPlayer mBrowsedMediaPlayer;
172
173    /* Addressed player handling */
174    private AddressedMediaPlayer mAddressedMediaPlayer;
175
176    /* List of Media player instances, useful for retrieving MediaPlayerList or MediaPlayerInfo */
177    private SortedMap<Integer, MediaPlayerInfo> mMediaPlayerInfoList;
178
179    /* List of media players which supports browse */
180    private ArrayList<BrowsePlayerInfo> mBrowsePlayerInfoList;
181
182    /* Manage browsed players */
183    private AvrcpBrowseManager mAvrcpBrowseManager;
184
185    /* Broadcast receiver for device connections intent broadcasts */
186    private final BroadcastReceiver mAvrcpReceiver = new AvrcpServiceBroadcastReceiver();
187    private final BroadcastReceiver mBootReceiver = new AvrcpServiceBootReceiver();
188
189    /* Recording passthrough key dispatches */
190    static private final int PASSTHROUGH_LOG_MAX_SIZE = DEBUG ? 50 : 10;
191    private EvictingQueue<MediaKeyLog> mPassthroughLogs; // Passthorugh keys dispatched
192    private ArrayList<MediaKeyLog> mPassthroughPending; // Passthrough keys sent not dispatched yet
193    private int mPassthroughDispatched; // Number of keys dispatched
194
195    private class MediaKeyLog {
196        private long mTimeSent;
197        private long mTimeProcessed;
198        private String mPackage;
199        private KeyEvent mEvent;
200
201        public MediaKeyLog(long time, KeyEvent event) {
202            mEvent = event;
203            mTimeSent = time;
204        }
205
206        public boolean addDispatch(long time, KeyEvent event, String packageName) {
207            if (DEBUG)
208                Log.v(TAG, "addDispatch: Trying to match " + mEvent + " and record " + packageName);
209            if (mPackage != null) return false;
210            if (event.getAction() != mEvent.getAction()) return false;
211            if (event.getKeyCode() != mEvent.getKeyCode()) return false;
212            mPackage = packageName;
213            mTimeProcessed = time;
214            return true;
215        }
216
217        public String toString() {
218            StringBuilder sb = new StringBuilder();
219            sb.append(android.text.format.DateFormat.format("MM-dd HH:mm:ss", mTimeSent));
220            sb.append(" " + mEvent.toString());
221            if (mPackage == null) {
222                sb.append(" (undispatched)");
223            } else {
224                sb.append(" to " + mPackage);
225                sb.append(" in " + (mTimeProcessed - mTimeSent) + "ms");
226            }
227            return sb.toString();
228        }
229    }
230
231    static {
232        classInitNative();
233    }
234
235    private Avrcp(Context context) {
236        mMediaAttributes = new MediaAttributes(null);
237        mCurrentPlayState = new PlaybackState.Builder().setState(PlaybackState.STATE_NONE, -1L, 0.0f).build();
238        mPlayStatusChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
239        mTrackChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
240        mTracksPlayed = 0;
241        mLastStateUpdate = -1L;
242        mSongLengthMs = 0L;
243        mPlaybackIntervalMs = 0L;
244        mPlayPosChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
245        mLastReportedPosition = -1;
246        mNextPosMs = -1;
247        mPrevPosMs = -1;
248        mFeatures = 0;
249        mRemoteVolume = -1;
250        mInitialRemoteVolume = -1;
251        mLastRemoteVolume = -1;
252        mLastDirection = 0;
253        mVolCmdAdjustInProgress = false;
254        mVolCmdSetInProgress = false;
255        mAbsVolRetryTimes = 0;
256        mLocalVolume = -1;
257        mLastLocalVolume = -1;
258        mAbsVolThreshold = 0;
259        mVolumeMapping = new HashMap<Integer, Integer>();
260        sUIDCounter = AvrcpConstants.DEFAULT_UID_COUNTER;
261        mCurrAddrPlayerID = 0;
262        mCurrBrowsePlayerID = 0;
263        mContext = context;
264        mLastUsedPlayerID = 0;
265        mAddressedMediaPlayer = null;
266
267        initNative();
268
269        mMediaSessionManager = (MediaSessionManager) context.getSystemService(
270            Context.MEDIA_SESSION_SERVICE);
271        mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
272        mAudioStreamMax = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
273        mVolumeStep = Math.max(AVRCP_BASE_VOLUME_STEP, AVRCP_MAX_VOL/mAudioStreamMax);
274
275        Resources resources = context.getResources();
276        if (resources != null) {
277            mAbsVolThreshold = resources.getInteger(R.integer.a2dp_absolute_volume_initial_threshold);
278        }
279
280        // Register for package removal intent broadcasts for media button receiver persistence
281        IntentFilter pkgFilter = new IntentFilter();
282        pkgFilter.addAction(Intent.ACTION_PACKAGE_REMOVED);
283        pkgFilter.addAction(Intent.ACTION_PACKAGE_ADDED);
284        pkgFilter.addAction(Intent.ACTION_PACKAGE_CHANGED);
285        pkgFilter.addAction(Intent.ACTION_PACKAGE_DATA_CLEARED);
286        pkgFilter.addDataScheme("package");
287        context.registerReceiver(mAvrcpReceiver, pkgFilter);
288
289        IntentFilter bootFilter = new IntentFilter();
290        bootFilter.addAction(Intent.ACTION_BOOT_COMPLETED);
291        context.registerReceiver(mBootReceiver, bootFilter);
292    }
293
294    private void start() {
295        HandlerThread thread = new HandlerThread("BluetoothAvrcpHandler");
296        thread.start();
297        Looper looper = thread.getLooper();
298        mHandler = new AvrcpMessageHandler(looper);
299        mMediaControllerCb = new MediaControllerListener();
300        mAvrcpMediaRsp = new AvrcpMediaRsp();
301        mMediaPlayerInfoList = new TreeMap<Integer, MediaPlayerInfo>();
302        mBrowsePlayerInfoList = new ArrayList<BrowsePlayerInfo>();
303        mPassthroughDispatched = 0;
304        mPassthroughLogs = new EvictingQueue<MediaKeyLog>(PASSTHROUGH_LOG_MAX_SIZE);
305        mPassthroughPending = new ArrayList<MediaKeyLog>();
306        if (mMediaSessionManager != null) {
307            mMediaSessionManager.addOnActiveSessionsChangedListener(mActiveSessionListener, null,
308                    mHandler);
309            mMediaSessionManager.setCallback(mButtonDispatchCallback, null);
310        }
311        mPackageManager = mContext.getApplicationContext().getPackageManager();
312
313        /* create object to communicate with addressed player */
314        mAddressedMediaPlayer = new AddressedMediaPlayer(mAvrcpMediaRsp);
315
316        /* initialize BrowseMananger which manages Browse commands and response */
317        mAvrcpBrowseManager = new AvrcpBrowseManager(mContext, mAvrcpMediaRsp);
318
319        initMediaPlayersList();
320
321        UserManager manager = UserManager.get(mContext);
322        if (manager == null || manager.isUserUnlocked()) {
323            if (DEBUG) Log.d(TAG, "User already unlocked, initializing player lists");
324            // initialize browsable player list and build media player list
325            (new BrowsablePlayerListBuilder()).start();
326        }
327    }
328
329    public static Avrcp make(Context context) {
330        if (DEBUG) Log.v(TAG, "make");
331        Avrcp ar = new Avrcp(context);
332        ar.start();
333        return ar;
334    }
335
336    public void doQuit() {
337        if (DEBUG) Log.d(TAG, "doQuit");
338        mHandler.removeCallbacksAndMessages(null);
339        Looper looper = mHandler.getLooper();
340        if (looper != null) {
341            looper.quit();
342        }
343
344        if (mMediaController != null) mMediaController.unregisterCallback(mMediaControllerCb);
345
346        mMediaSessionManager.removeOnActiveSessionsChangedListener(mActiveSessionListener);
347
348        mHandler = null;
349        mContext.unregisterReceiver(mAvrcpReceiver);
350        mContext.unregisterReceiver(mBootReceiver);
351
352        mAddressedMediaPlayer.cleanup();
353        mAvrcpBrowseManager.cleanup();
354    }
355
356    public void cleanup() {
357        if (DEBUG) Log.d(TAG, "cleanup");
358        cleanupNative();
359        if (mVolumeMapping != null)
360            mVolumeMapping.clear();
361    }
362
363    private class MediaControllerListener extends MediaController.Callback {
364        @Override
365        public void onMetadataChanged(MediaMetadata metadata) {
366            Log.v(TAG, "MediaController metadata changed");
367            updateMetadata(metadata);
368        }
369
370        @Override
371        public synchronized void onPlaybackStateChanged(PlaybackState state) {
372            if (DEBUG) Log.v(TAG, "onPlaybackStateChanged: state " + state.toString());
373
374            updatePlaybackState(state);
375
376            byte stateBytes = (byte) convertPlayStateToBytes(state.getState());
377
378            /* updating play status in global media player list */
379            MediaPlayerInfo player = getAddressedPlayerInfo();
380            if (player != null) {
381                player.setPlayStatus(stateBytes);
382            } else {
383                Log.w(TAG, "onPlaybackStateChanged: no addressed player id=" + mCurrAddrPlayerID);
384            }
385        }
386
387        @Override
388        public void onSessionDestroyed() {
389            Log.v(TAG, "MediaController session destroyed");
390        }
391
392        @Override
393        public void onQueueChanged(List<MediaSession.QueueItem> queue) {
394            if (queue == null) {
395                Log.v(TAG, "onQueueChanged: received null queue");
396                return;
397            }
398
399            Log.v(TAG, "onQueueChanged: NowPlaying list changed, Queue Size = "+ queue.size());
400            mAddressedMediaPlayer.updateNowPlayingList(queue);
401            mHandler.sendEmptyMessage(MSG_NOW_PLAYING_CHANGED_RSP);
402        }
403    }
404
405    /** Handles Avrcp messages. */
406    private final class AvrcpMessageHandler extends Handler {
407        private AvrcpMessageHandler(Looper looper) {
408            super(looper);
409        }
410
411        @Override
412        public void handleMessage(Message msg) {
413            switch (msg.what) {
414            case MSG_NATIVE_REQ_GET_RC_FEATURES:
415            {
416                String address = (String) msg.obj;
417                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_RC_FEATURES: address="+address+
418                        ", features="+msg.arg1);
419                mFeatures = msg.arg1;
420                mFeatures = modifyRcFeatureFromBlacklist(mFeatures, address);
421                mAudioManager.avrcpSupportsAbsoluteVolume(address, isAbsoluteVolumeSupported());
422                mLastLocalVolume = -1;
423                mRemoteVolume = -1;
424                mLocalVolume = -1;
425                mInitialRemoteVolume = -1;
426                mAddress = address;
427                if (mVolumeMapping != null)
428                    mVolumeMapping.clear();
429                break;
430            }
431
432            case MSG_NATIVE_REQ_GET_PLAY_STATUS:
433            {
434                byte[] address = (byte[]) msg.obj;
435                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_PLAY_STATUS");
436                getPlayStatusRspNative(address, convertPlayStateToPlayStatus(mCurrentPlayState),
437                        (int) mSongLengthMs, (int) getPlayPosition());
438                break;
439            }
440
441            case MSG_NATIVE_REQ_GET_ELEM_ATTRS:
442            {
443                String[] textArray;
444                AvrcpCmd.ElementAttrCmd elem = (AvrcpCmd.ElementAttrCmd) msg.obj;
445                byte numAttr = elem.mNumAttr;
446                int[] attrIds = elem.mAttrIDs;
447                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_ELEM_ATTRS:numAttr=" + numAttr);
448                textArray = new String[numAttr];
449                for (int i = 0; i < numAttr; ++i) {
450                    textArray[i] = mMediaAttributes.getString(attrIds[i]);
451                    Log.v(TAG, "getAttributeString:attrId=" + attrIds[i] +
452                            " str=" + textArray[i]);
453                }
454                byte[] bdaddr = elem.mAddress;
455                getElementAttrRspNative(bdaddr, numAttr, attrIds, textArray);
456                break;
457            }
458
459            case MSG_NATIVE_REQ_REGISTER_NOTIFICATION:
460                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_REGISTER_NOTIFICATION:event=" + msg.arg1 +
461                        " param=" + msg.arg2);
462                processRegisterNotification((byte[]) msg.obj, msg.arg1, msg.arg2);
463                break;
464
465            case MSG_AVAILABLE_PLAYERS_CHANGED_RSP:
466                if (DEBUG) Log.v(TAG, "MSG_AVAILABLE_PLAYERS_CHANGED_RSP");
467                removeMessages(MSG_AVAILABLE_PLAYERS_CHANGED_RSP);
468                registerNotificationRspAvalPlayerChangedNative(
469                        AvrcpConstants.NOTIFICATION_TYPE_CHANGED);
470                break;
471
472            case MSG_NOW_PLAYING_CHANGED_RSP:
473                if (DEBUG) Log.v(TAG, "MSG_NOW_PLAYING_CHANGED_RSP");
474                removeMessages(MSG_NOW_PLAYING_CHANGED_RSP);
475                registerNotificationRspNowPlayingChangedNative(
476                        AvrcpConstants.NOTIFICATION_TYPE_CHANGED);
477                break;
478
479            case MSG_ADDRESSED_PLAYER_CHANGED_RSP:
480                if (DEBUG)
481                    Log.v(TAG, "MSG_ADDRESSED_PLAYER_CHANGED_RSP: newAddrPlayer = " + msg.arg1);
482                // Later addressed players override earlier ones.
483                if (hasMessages(MSG_ADDRESSED_PLAYER_CHANGED_RSP)) {
484                    Log.i(TAG, "MSG_ADDRESSED_PLAYER_CHANGED_RSP: skip, more changes in queue");
485                    break;
486                }
487                registerNotificationRspAddrPlayerChangedNative(
488                        AvrcpConstants.NOTIFICATION_TYPE_CHANGED, msg.arg1, sUIDCounter);
489                break;
490
491            case MSG_PLAY_INTERVAL_TIMEOUT:
492                if (DEBUG) Log.v(TAG, "MSG_PLAY_INTERVAL_TIMEOUT");
493                sendPlayPosNotificationRsp(false);
494                break;
495
496            case MSG_NATIVE_REQ_VOLUME_CHANGE:
497                if (!isAbsoluteVolumeSupported()) {
498                    if (DEBUG) Log.v(TAG, "ignore MSG_NATIVE_REQ_VOLUME_CHANGE");
499                    break;
500                }
501
502                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_VOLUME_CHANGE: volume=" + ((byte) msg.arg1 & 0x7f)
503                        + " ctype=" + msg.arg2);
504
505                boolean volAdj = false;
506                if (msg.arg2 == AVRC_RSP_ACCEPT || msg.arg2 == AVRC_RSP_REJ) {
507                    if (mVolCmdAdjustInProgress == false && mVolCmdSetInProgress == false) {
508                        Log.e(TAG, "Unsolicited response, ignored");
509                        break;
510                    }
511                    removeMessages(MSG_ABS_VOL_TIMEOUT);
512
513                    volAdj = mVolCmdAdjustInProgress;
514                    mVolCmdAdjustInProgress = false;
515                    mVolCmdSetInProgress = false;
516                    mAbsVolRetryTimes = 0;
517                }
518
519                byte absVol = (byte) ((byte) msg.arg1 & 0x7f); // discard MSB as it is RFD
520                // convert remote volume to local volume
521                int volIndex = convertToAudioStreamVolume(absVol);
522                if (mInitialRemoteVolume == -1) {
523                    mInitialRemoteVolume = absVol;
524                    if (mAbsVolThreshold > 0 && mAbsVolThreshold < mAudioStreamMax && volIndex > mAbsVolThreshold) {
525                        if (DEBUG) Log.v(TAG, "remote inital volume too high " + volIndex + ">" + mAbsVolThreshold);
526                        Message msg1 = mHandler.obtainMessage(MSG_SET_ABSOLUTE_VOLUME, mAbsVolThreshold , 0);
527                        mHandler.sendMessage(msg1);
528                        mRemoteVolume = absVol;
529                        mLocalVolume = volIndex;
530                        break;
531                    }
532                }
533
534                if (mLocalVolume != volIndex && (msg.arg2 == AVRC_RSP_ACCEPT ||
535                                                 msg.arg2 == AVRC_RSP_CHANGED ||
536                                                 msg.arg2 == AVRC_RSP_INTERIM)) {
537                    /* If the volume has successfully changed */
538                    mLocalVolume = volIndex;
539                    if (mLastLocalVolume != -1 && msg.arg2 == AVRC_RSP_ACCEPT) {
540                        if (mLastLocalVolume != volIndex) {
541                            /* remote volume changed more than requested due to
542                             * local and remote has different volume steps */
543                            if (DEBUG) Log.d(TAG, "Remote returned volume does not match desired volume "
544                                    + mLastLocalVolume + " vs " + volIndex);
545                            mLastLocalVolume = mLocalVolume;
546                        }
547                    }
548                    // remember the remote volume value, as it's the one supported by remote
549                    if (volAdj) {
550                        synchronized (mVolumeMapping) {
551                            mVolumeMapping.put(volIndex, (int) absVol);
552                            if (DEBUG) Log.v(TAG, "remember volume mapping " +volIndex+ "-"+absVol);
553                        }
554                    }
555
556                    notifyVolumeChanged(mLocalVolume);
557                    mRemoteVolume = absVol;
558                    long pecentVolChanged = ((long) absVol * 100) / 0x7f;
559                    Log.e(TAG, "percent volume changed: " + pecentVolChanged + "%");
560                } else if (msg.arg2 == AVRC_RSP_REJ) {
561                    Log.e(TAG, "setAbsoluteVolume call rejected");
562                } else if (volAdj && mLastRemoteVolume > 0 && mLastRemoteVolume < AVRCP_MAX_VOL &&
563                        mLocalVolume == volIndex &&
564                        (msg.arg2 == AVRC_RSP_ACCEPT)) {
565                    /* oops, the volume is still same, remote does not like the value
566                     * retry a volume one step up/down */
567                    if (DEBUG) Log.d(TAG, "Remote device didn't tune volume, let's try one more step.");
568                    int retry_volume = Math.min(AVRCP_MAX_VOL,
569                            Math.max(0, mLastRemoteVolume + mLastDirection));
570                    if (setVolumeNative(retry_volume)) {
571                        mLastRemoteVolume = retry_volume;
572                        sendMessageDelayed(obtainMessage(MSG_ABS_VOL_TIMEOUT), CMD_TIMEOUT_DELAY);
573                        mVolCmdAdjustInProgress = true;
574                    }
575                }
576                break;
577
578            case MSG_ADJUST_VOLUME:
579                if (!isAbsoluteVolumeSupported()) {
580                    if (DEBUG) Log.v(TAG, "ignore MSG_ADJUST_VOLUME");
581                    break;
582                }
583
584                if (DEBUG) Log.d(TAG, "MSG_ADJUST_VOLUME: direction=" + msg.arg1);
585
586                if (mVolCmdAdjustInProgress || mVolCmdSetInProgress) {
587                    if (DEBUG) Log.w(TAG, "There is already a volume command in progress.");
588                    break;
589                }
590
591                // Remote device didn't set initial volume. Let's black list it
592                if (mInitialRemoteVolume == -1) {
593                    Log.d(TAG, "remote " + mAddress + " never tell us initial volume, black list it.");
594                    blackListCurrentDevice();
595                    break;
596                }
597
598                // Wait on verification on volume from device, before changing the volume.
599                if (mRemoteVolume != -1 && (msg.arg1 == -1 || msg.arg1 == 1)) {
600                    int setVol = -1;
601                    int targetVolIndex = -1;
602                    if (mLocalVolume == 0 && msg.arg1 == -1) {
603                        if (DEBUG) Log.w(TAG, "No need to Vol down from 0.");
604                        break;
605                    }
606                    if (mLocalVolume == mAudioStreamMax && msg.arg1 == 1) {
607                        if (DEBUG) Log.w(TAG, "No need to Vol up from max.");
608                        break;
609                    }
610
611                    targetVolIndex = mLocalVolume + msg.arg1;
612                    if (DEBUG) Log.d(TAG, "Adjusting volume to  " + targetVolIndex);
613
614                    Integer i;
615                    synchronized (mVolumeMapping) {
616                        i = mVolumeMapping.get(targetVolIndex);
617                    }
618
619                    if (i != null) {
620                        /* if we already know this volume mapping, use it */
621                        setVol = i.byteValue();
622                        if (setVol == mRemoteVolume) {
623                            if (DEBUG) Log.d(TAG, "got same volume from mapping for " + targetVolIndex + ", ignore.");
624                            setVol = -1;
625                        }
626                        if (DEBUG) Log.d(TAG, "set volume from mapping " + targetVolIndex + "-" + setVol);
627                    }
628
629                    if (setVol == -1) {
630                        /* otherwise use phone steps */
631                        setVol = Math.min(AVRCP_MAX_VOL,
632                                convertToAvrcpVolume(Math.max(0, targetVolIndex)));
633                        if (DEBUG) Log.d(TAG, "set volume from local volume "+ targetVolIndex+"-"+ setVol);
634                    }
635
636                    if (setVolumeNative(setVol)) {
637                        sendMessageDelayed(obtainMessage(MSG_ABS_VOL_TIMEOUT), CMD_TIMEOUT_DELAY);
638                        mVolCmdAdjustInProgress = true;
639                        mLastDirection = msg.arg1;
640                        mLastRemoteVolume = setVol;
641                        mLastLocalVolume = targetVolIndex;
642                    } else {
643                         if (DEBUG) Log.d(TAG, "setVolumeNative failed");
644                    }
645                } else {
646                    Log.e(TAG, "Unknown direction in MSG_ADJUST_VOLUME");
647                }
648                break;
649
650            case MSG_SET_ABSOLUTE_VOLUME:
651                if (!isAbsoluteVolumeSupported()) {
652                    if (DEBUG) Log.v(TAG, "ignore MSG_SET_ABSOLUTE_VOLUME");
653                    break;
654                }
655
656                if (DEBUG) Log.v(TAG, "MSG_SET_ABSOLUTE_VOLUME");
657
658                if (mVolCmdSetInProgress || mVolCmdAdjustInProgress) {
659                    if (DEBUG) Log.w(TAG, "There is already a volume command in progress.");
660                    break;
661                }
662
663                // Remote device didn't set initial volume. Let's black list it
664                if (mInitialRemoteVolume == -1) {
665                    if (DEBUG) Log.d(TAG, "remote " + mAddress + " never tell us initial volume, black list it.");
666                    blackListCurrentDevice();
667                    break;
668                }
669
670                int avrcpVolume = convertToAvrcpVolume(msg.arg1);
671                avrcpVolume = Math.min(AVRCP_MAX_VOL, Math.max(0, avrcpVolume));
672                if (DEBUG) Log.d(TAG, "Setting volume to " + msg.arg1 + "-" + avrcpVolume);
673                if (setVolumeNative(avrcpVolume)) {
674                    sendMessageDelayed(obtainMessage(MSG_ABS_VOL_TIMEOUT), CMD_TIMEOUT_DELAY);
675                    mVolCmdSetInProgress = true;
676                    mLastRemoteVolume = avrcpVolume;
677                    mLastLocalVolume = msg.arg1;
678                } else {
679                     if (DEBUG) Log.d(TAG, "setVolumeNative failed");
680                }
681                break;
682
683            case MSG_ABS_VOL_TIMEOUT:
684                if (DEBUG) Log.v(TAG, "MSG_ABS_VOL_TIMEOUT: Volume change cmd timed out.");
685                mVolCmdAdjustInProgress = false;
686                mVolCmdSetInProgress = false;
687                if (mAbsVolRetryTimes >= MAX_ERROR_RETRY_TIMES) {
688                    mAbsVolRetryTimes = 0;
689                    /* too many volume change failures, black list the device */
690                    blackListCurrentDevice();
691                } else {
692                    mAbsVolRetryTimes += 1;
693                    if (setVolumeNative(mLastRemoteVolume)) {
694                        sendMessageDelayed(obtainMessage(MSG_ABS_VOL_TIMEOUT), CMD_TIMEOUT_DELAY);
695                        mVolCmdSetInProgress = true;
696                    }
697                }
698                break;
699
700            case MSG_SET_A2DP_AUDIO_STATE:
701                if (DEBUG) Log.v(TAG, "MSG_SET_A2DP_AUDIO_STATE:" + msg.arg1);
702                updateA2dpAudioState(msg.arg1);
703                break;
704
705            case MSG_NATIVE_REQ_GET_FOLDER_ITEMS: {
706                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_FOLDER_ITEMS");
707                AvrcpCmd.FolderItemsCmd folderObj = (AvrcpCmd.FolderItemsCmd) msg.obj;
708                switch (folderObj.mScope) {
709                    case AvrcpConstants.BTRC_SCOPE_PLAYER_LIST:
710                        handleMediaPlayerListRsp(folderObj);
711                        break;
712                    case AvrcpConstants.BTRC_SCOPE_FILE_SYSTEM:
713                    case AvrcpConstants.BTRC_SCOPE_NOW_PLAYING:
714                        handleGetFolderItemBrowseResponse(folderObj, folderObj.mAddress);
715                        break;
716                    default:
717                        Log.e(TAG, "unknown scope for getfolderitems. scope = "
718                                + folderObj.mScope);
719                        getFolderItemsRspNative(folderObj.mAddress,
720                                AvrcpConstants.RSP_INV_SCOPE, (short) 0, (byte) 0, 0,
721                                null, null, null, null, null, null, null, null);
722                }
723                break;
724            }
725
726            case MSG_NATIVE_REQ_SET_ADDR_PLAYER:
727                // object is bdaddr, argument 1 is the selected player id
728                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_SET_ADDR_PLAYER id=" + msg.arg1);
729                setAddressedPlayer((byte[]) msg.obj, msg.arg1);
730                break;
731
732            case MSG_NATIVE_REQ_GET_ITEM_ATTR:
733                // msg object contains the item attribute object
734                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_ITEM_ATTR");
735                handleGetItemAttr((AvrcpCmd.ItemAttrCmd) msg.obj);
736                break;
737
738            case MSG_NATIVE_REQ_SET_BR_PLAYER:
739                // argument 1 is the selected player id
740                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_SET_BR_PLAYER id=" + msg.arg1);
741                setBrowsedPlayer((byte[]) msg.obj, msg.arg1);
742                break;
743
744            case MSG_NATIVE_REQ_CHANGE_PATH:
745            {
746                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_CHANGE_PATH");
747                Bundle data = msg.getData();
748                byte[] bdaddr = data.getByteArray("BdAddress");
749                byte[] folderUid = data.getByteArray("folderUid");
750                byte direction = data.getByte("direction");
751                if (mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr) != null) {
752                        mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr).changePath(folderUid,
753                        direction);
754                } else {
755                    Log.e(TAG, "Remote requesting change path before setbrowsedplayer");
756                    changePathRspNative(bdaddr, AvrcpConstants.RSP_BAD_CMD, 0);
757                }
758                break;
759            }
760
761            case MSG_NATIVE_REQ_PLAY_ITEM:
762            {
763                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_PLAY_ITEM");
764                Bundle data = msg.getData();
765                byte[] bdaddr = data.getByteArray("BdAddress");
766                byte[] uid = data.getByteArray("uid");
767                byte scope = data.getByte("scope");
768                handlePlayItemResponse(bdaddr, uid, scope);
769                break;
770            }
771
772            case MSG_NATIVE_REQ_GET_TOTAL_NUM_OF_ITEMS:
773                if (DEBUG) Log.v(TAG, "MSG_NATIVE_REQ_GET_TOTAL_NUM_OF_ITEMS scope=" + msg.arg1);
774                // argument 1 is scope, object is bdaddr
775                handleGetTotalNumOfItemsResponse((byte[]) msg.obj, (byte) msg.arg1);
776                break;
777
778            case MSG_NATIVE_REQ_PASS_THROUGH:
779                if (DEBUG)
780                    Log.v(TAG, "MSG_NATIVE_REQ_PASS_THROUGH: id=" + msg.arg1 + " st=" + msg.arg2);
781                // argument 1 is id, argument 2 is keyState
782                handlePassthroughCmd(msg.arg1, msg.arg2);
783                break;
784
785            default:
786                Log.e(TAG, "unknown message! msg.what=" + msg.what);
787                break;
788            }
789        }
790    }
791
792    private void updateA2dpAudioState(int state) {
793        boolean isPlaying = (state == BluetoothA2dp.STATE_PLAYING);
794        if (isPlaying != isPlayingState(mCurrentPlayState)) {
795            /* if a2dp is streaming, check to make sure music is active */
796            if (isPlaying && !mAudioManager.isMusicActive())
797                return;
798            PlaybackState.Builder builder = new PlaybackState.Builder();
799            if (isPlaying) {
800                builder.setState(PlaybackState.STATE_PLAYING,
801                        PlaybackState.PLAYBACK_POSITION_UNKNOWN, 1.0f);
802            } else {
803                builder.setState(PlaybackState.STATE_PAUSED,
804                        PlaybackState.PLAYBACK_POSITION_UNKNOWN, 0.0f);
805            }
806            updatePlaybackState(builder.build());
807        }
808    }
809
810    private void updatePlaybackState(PlaybackState state) {
811        if (state == null) {
812          state = new PlaybackState.Builder().setState(PlaybackState.STATE_NONE,
813                PlaybackState.PLAYBACK_POSITION_UNKNOWN, 0.0f).build();
814        }
815
816        int oldPlayStatus = convertPlayStateToPlayStatus(mCurrentPlayState);
817        int newPlayStatus = convertPlayStateToPlayStatus(state);
818
819        if (DEBUG) {
820            Log.v(TAG, "updatePlaybackState (" + mPlayStatusChangedNT + "): "+
821                    "old=" + mCurrentPlayState + "(" + oldPlayStatus + "), "+
822                    "new=" + state + "(" + newPlayStatus + ")");
823        }
824
825        mCurrentPlayState = state;
826        mLastStateUpdate = SystemClock.elapsedRealtime();
827
828        sendPlayPosNotificationRsp(false);
829
830        if (mPlayStatusChangedNT == AvrcpConstants.NOTIFICATION_TYPE_INTERIM &&
831                (oldPlayStatus != newPlayStatus)) {
832            mPlayStatusChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
833            registerNotificationRspPlayStatusNative(mPlayStatusChangedNT, newPlayStatus);
834        }
835    }
836
837    private void updateTransportControls(int transportControlFlags) {
838        mTransportControlFlags = transportControlFlags;
839    }
840
841    class MediaAttributes {
842        private boolean exists;
843        private String title;
844        private String artistName;
845        private String albumName;
846        private String mediaNumber;
847        private String mediaTotalNumber;
848        private String genre;
849        private String playingTimeMs;
850
851        private static final int ATTR_TITLE = 1;
852        private static final int ATTR_ARTIST_NAME = 2;
853        private static final int ATTR_ALBUM_NAME = 3;
854        private static final int ATTR_MEDIA_NUMBER = 4;
855        private static final int ATTR_MEDIA_TOTAL_NUMBER = 5;
856        private static final int ATTR_GENRE = 6;
857        private static final int ATTR_PLAYING_TIME_MS = 7;
858
859
860        public MediaAttributes(MediaMetadata data) {
861            exists = data != null;
862            if (!exists)
863                return;
864
865            artistName = stringOrBlank(data.getString(MediaMetadata.METADATA_KEY_ARTIST));
866            albumName = stringOrBlank(data.getString(MediaMetadata.METADATA_KEY_ALBUM));
867            mediaNumber = longStringOrBlank(data.getLong(MediaMetadata.METADATA_KEY_TRACK_NUMBER));
868            mediaTotalNumber = longStringOrBlank(data.getLong(MediaMetadata.METADATA_KEY_NUM_TRACKS));
869            genre = stringOrBlank(data.getString(MediaMetadata.METADATA_KEY_GENRE));
870            playingTimeMs = longStringOrBlank(data.getLong(MediaMetadata.METADATA_KEY_DURATION));
871
872            // Try harder for the title.
873            title = data.getString(MediaMetadata.METADATA_KEY_TITLE);
874
875            if (title == null) {
876                MediaDescription desc = data.getDescription();
877                if (desc != null) {
878                    CharSequence val = desc.getDescription();
879                    if (val != null)
880                        title = val.toString();
881                }
882            }
883
884            if (title == null)
885                title = new String();
886        }
887
888        public boolean equals(MediaAttributes other) {
889            if (other == null)
890                return false;
891
892            if (exists != other.exists)
893                return false;
894
895            if (exists == false)
896                return true;
897
898            return (title.equals(other.title)) &&
899                (artistName.equals(other.artistName)) &&
900                (albumName.equals(other.albumName)) &&
901                (mediaNumber.equals(other.mediaNumber)) &&
902                (mediaTotalNumber.equals(other.mediaTotalNumber)) &&
903                (genre.equals(other.genre)) &&
904                (playingTimeMs.equals(other.playingTimeMs));
905        }
906
907        public String getString(int attrId) {
908            if (!exists)
909                return new String();
910
911            switch (attrId) {
912                case ATTR_TITLE:
913                    return title;
914                case ATTR_ARTIST_NAME:
915                    return artistName;
916                case ATTR_ALBUM_NAME:
917                    return albumName;
918                case ATTR_MEDIA_NUMBER:
919                    return mediaNumber;
920                case ATTR_MEDIA_TOTAL_NUMBER:
921                    return mediaTotalNumber;
922                case ATTR_GENRE:
923                    return genre;
924                case ATTR_PLAYING_TIME_MS:
925                    return playingTimeMs;
926                default:
927                    return new String();
928            }
929        }
930
931        private String stringOrBlank(String s) {
932            return s == null ? new String() : s;
933        }
934
935        private String longStringOrBlank(Long s) {
936            return s == null ? new String() : s.toString();
937        }
938
939        public String toString() {
940            if (!exists) {
941                return "[MediaAttributes: none]";
942            }
943
944            return "[MediaAttributes: " + title + " - " + albumName + " by "
945                    + artistName + " (" + mediaNumber + "/" + mediaTotalNumber + ") "
946                    + genre + "]";
947        }
948    }
949
950    private void updateMetadata(MediaMetadata data) {
951        MediaAttributes oldAttributes = mMediaAttributes;
952        mMediaAttributes = new MediaAttributes(data);
953        if (data == null) {
954            mSongLengthMs = 0L;
955        } else {
956            mSongLengthMs = data.getLong(MediaMetadata.METADATA_KEY_DURATION);
957        }
958
959        if (!oldAttributes.equals(mMediaAttributes)) {
960            Log.v(TAG, "MediaAttributes Changed to " + mMediaAttributes.toString());
961            mTracksPlayed++;
962
963            if (mTrackChangedNT == AvrcpConstants.NOTIFICATION_TYPE_INTERIM) {
964                mTrackChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
965                sendTrackChangedRsp();
966            }
967        } else {
968            Log.v(TAG, "Updated " + mMediaAttributes.toString() + " but no change!");
969        }
970
971        // Update the play state, which sends play state and play position
972        // notifications if needed.
973        if (mMediaController != null) {
974            updatePlaybackState(mMediaController.getPlaybackState());
975        } else {
976            updatePlaybackState(null);
977        }
978    }
979
980    private void getRcFeaturesRequestFromNative(byte[] address, int features) {
981        if (DEBUG) Log.v(TAG, "getRcFeaturesRequestFromNative: address=" + address.toString());
982        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_RC_FEATURES, features, 0,
983                Utils.getAddressStringFromByte(address));
984        mHandler.sendMessage(msg);
985    }
986
987    private void getPlayStatusRequestFromNative(byte[] address) {
988        if (DEBUG) Log.v(TAG, "getPlayStatusRequestFromNative: address" + address.toString());
989        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_PLAY_STATUS);
990        msg.obj = address;
991        mHandler.sendMessage(msg);
992    }
993
994    private void getElementAttrRequestFromNative(byte[] address,byte numAttr, int[] attrs) {
995        if (DEBUG) Log.v(TAG, "getElementAttrRequestFromNative: numAttr=" + numAttr);
996        AvrcpCmd avrcpCmdobj = new AvrcpCmd();
997        AvrcpCmd.ElementAttrCmd elemAttr = avrcpCmdobj.new ElementAttrCmd(address, numAttr, attrs);
998        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_ELEM_ATTRS);
999        msg.obj = elemAttr;
1000        mHandler.sendMessage(msg);
1001    }
1002
1003    private void registerNotificationRequestFromNative(byte[] address,int eventId, int param) {
1004        if (DEBUG) Log.v(TAG, "registerNotificationRequestFromNative: eventId=" + eventId);
1005        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_REGISTER_NOTIFICATION, eventId, param);
1006        msg.obj = address;
1007        mHandler.sendMessage(msg);
1008    }
1009
1010    private void processRegisterNotification(byte[] address, int eventId, int param) {
1011        switch (eventId) {
1012            case EVT_PLAY_STATUS_CHANGED:
1013                mPlayStatusChangedNT = AvrcpConstants.NOTIFICATION_TYPE_INTERIM;
1014                registerNotificationRspPlayStatusNative(mPlayStatusChangedNT,
1015                        convertPlayStateToPlayStatus(mCurrentPlayState));
1016                break;
1017
1018            case EVT_TRACK_CHANGED:
1019                Log.v(TAG, "Track changed notification enabled");
1020                mTrackChangedNT = AvrcpConstants.NOTIFICATION_TYPE_INTERIM;
1021                sendTrackChangedRsp();
1022                break;
1023
1024            case EVT_PLAY_POS_CHANGED:
1025                mPlayPosChangedNT = AvrcpConstants.NOTIFICATION_TYPE_INTERIM;
1026                mPlaybackIntervalMs = (long) param * 1000L;
1027                sendPlayPosNotificationRsp(true);
1028                break;
1029
1030            case EVT_AVBL_PLAYERS_CHANGED:
1031                /* Notify remote available players changed */
1032                if (DEBUG) Log.d (TAG, "sending availablePlayersChanged to remote ");
1033                registerNotificationRspAvalPlayerChangedNative(
1034                        AvrcpConstants.NOTIFICATION_TYPE_INTERIM);
1035                break;
1036
1037            case EVT_ADDR_PLAYER_CHANGED:
1038                /* Notify remote addressed players changed */
1039                if (DEBUG) Log.d (TAG, "sending addressedPlayersChanged to remote ");
1040                registerNotificationRspAddrPlayerChangedNative(
1041                        AvrcpConstants.NOTIFICATION_TYPE_INTERIM,
1042                        mCurrAddrPlayerID, sUIDCounter);
1043                break;
1044
1045            case EVENT_UIDS_CHANGED:
1046                if (DEBUG) Log.d(TAG, "sending UIDs changed to remote");
1047                registerNotificationRspUIDsChangedNative(
1048                        AvrcpConstants.NOTIFICATION_TYPE_INTERIM, sUIDCounter);
1049                break;
1050
1051            case EVENT_NOW_PLAYING_CONTENT_CHANGED:
1052                if (DEBUG) Log.d(TAG, "sending NowPlayingList changed to remote");
1053                /* send interim response to remote device */
1054                if (!registerNotificationRspNowPlayingChangedNative(
1055                        AvrcpConstants.NOTIFICATION_TYPE_INTERIM)) {
1056                    Log.e(TAG, "EVENT_NOW_PLAYING_CONTENT_CHANGED: " +
1057                            "registerNotificationRspNowPlayingChangedNative for Interim rsp failed!");
1058                }
1059                break;
1060        }
1061    }
1062
1063    private void handlePassthroughCmdRequestFromNative(byte[] address, int id, int keyState) {
1064        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_PASS_THROUGH, id, keyState);
1065        mHandler.sendMessage(msg);
1066    }
1067
1068    private void sendTrackChangedRsp() {
1069        MediaPlayerInfo info = getAddressedPlayerInfo();
1070        if (info != null && !info.isBrowseSupported()) {
1071            // for players which does not support Browse or when no track is currently selected
1072            trackChangeRspForBrowseUnsupported();
1073        } else {
1074            // for players which support browsing
1075            mAddressedMediaPlayer.sendTrackChangeWithId(mTrackChangedNT, mMediaController);
1076        }
1077    }
1078
1079    private void trackChangeRspForBrowseUnsupported() {
1080        byte[] track = AvrcpConstants.TRACK_IS_SELECTED;
1081        if (mTrackChangedNT == AvrcpConstants.NOTIFICATION_TYPE_INTERIM
1082                && !mMediaAttributes.exists) {
1083            track = AvrcpConstants.NO_TRACK_SELECTED;
1084        }
1085        registerNotificationRspTrackChangeNative(mTrackChangedNT, track);
1086    }
1087
1088    private long getPlayPosition() {
1089        if (mCurrentPlayState == null) {
1090            return -1L;
1091        }
1092
1093        if (mCurrentPlayState.getPosition() == PlaybackState.PLAYBACK_POSITION_UNKNOWN) {
1094            return -1L;
1095        }
1096
1097        if (isPlayingState(mCurrentPlayState)) {
1098            return SystemClock.elapsedRealtime() - mLastStateUpdate + mCurrentPlayState.getPosition();
1099        }
1100
1101        return mCurrentPlayState.getPosition();
1102    }
1103
1104    private int convertPlayStateToPlayStatus(PlaybackState state) {
1105        int playStatus = PLAYSTATUS_ERROR;
1106        switch (state.getState()) {
1107            case PlaybackState.STATE_PLAYING:
1108            case PlaybackState.STATE_BUFFERING:
1109                playStatus = PLAYSTATUS_PLAYING;
1110                break;
1111
1112            case PlaybackState.STATE_STOPPED:
1113            case PlaybackState.STATE_NONE:
1114                playStatus = PLAYSTATUS_STOPPED;
1115                break;
1116
1117            case PlaybackState.STATE_PAUSED:
1118                playStatus = PLAYSTATUS_PAUSED;
1119                break;
1120
1121            case PlaybackState.STATE_FAST_FORWARDING:
1122            case PlaybackState.STATE_SKIPPING_TO_NEXT:
1123            case PlaybackState.STATE_SKIPPING_TO_QUEUE_ITEM:
1124                playStatus = PLAYSTATUS_FWD_SEEK;
1125                break;
1126
1127            case PlaybackState.STATE_REWINDING:
1128            case PlaybackState.STATE_SKIPPING_TO_PREVIOUS:
1129                playStatus = PLAYSTATUS_REV_SEEK;
1130                break;
1131
1132            case PlaybackState.STATE_ERROR:
1133                playStatus = PLAYSTATUS_ERROR;
1134                break;
1135
1136        }
1137        return playStatus;
1138    }
1139
1140    private boolean isPlayingState(PlaybackState state) {
1141        return (state.getState() == PlaybackState.STATE_PLAYING) ||
1142                (state.getState() == PlaybackState.STATE_BUFFERING);
1143    }
1144
1145    /**
1146     * Sends a play position notification, or schedules one to be
1147     * sent later at an appropriate time. If |requested| is true,
1148     * does both because this was called in reponse to a request from the
1149     * TG.
1150     */
1151    private void sendPlayPosNotificationRsp(boolean requested) {
1152        if (!requested && mPlayPosChangedNT != AvrcpConstants.NOTIFICATION_TYPE_INTERIM) {
1153            if (DEBUG) Log.d(TAG, "sendPlayPosNotificationRsp: Not registered or requesting.");
1154            return;
1155        }
1156
1157        long playPositionMs = getPlayPosition();
1158
1159        // mNextPosMs is set to -1 when the previous position was invalid
1160        // so this will be true if the new position is valid & old was invalid.
1161        // mPlayPositionMs is set to -1 when the new position is invalid,
1162        // and the old mPrevPosMs is >= 0 so this is true when the new is invalid
1163        // and the old was valid.
1164        if (DEBUG) Log.d(TAG, "sendPlayPosNotificationRsp: (" + requested + ") "
1165                + mPrevPosMs + " <=? " + playPositionMs + " <=? " + mNextPosMs);
1166        if (DEBUG) Log.d(TAG, "sendPlayPosNotificationRsp: currentPlayState " + mCurrentPlayState);
1167        if (requested || ((mLastReportedPosition != playPositionMs) &&
1168                (playPositionMs >= mNextPosMs) || (playPositionMs <= mPrevPosMs))) {
1169            if (!requested) mPlayPosChangedNT = AvrcpConstants.NOTIFICATION_TYPE_CHANGED;
1170            registerNotificationRspPlayPosNative(mPlayPosChangedNT, (int) playPositionMs);
1171            mLastReportedPosition = playPositionMs;
1172            if (playPositionMs != PlaybackState.PLAYBACK_POSITION_UNKNOWN) {
1173                mNextPosMs = playPositionMs + mPlaybackIntervalMs;
1174                mPrevPosMs = playPositionMs - mPlaybackIntervalMs;
1175            } else {
1176                mNextPosMs = -1;
1177                mPrevPosMs = -1;
1178            }
1179        }
1180
1181        mHandler.removeMessages(MSG_PLAY_INTERVAL_TIMEOUT);
1182        if (mPlayPosChangedNT == AvrcpConstants.NOTIFICATION_TYPE_INTERIM && isPlayingState(mCurrentPlayState)) {
1183            Message msg = mHandler.obtainMessage(MSG_PLAY_INTERVAL_TIMEOUT);
1184            long delay = mPlaybackIntervalMs;
1185            if (mNextPosMs != -1) {
1186                delay = mNextPosMs - (playPositionMs > 0 ? playPositionMs : 0);
1187            }
1188            if (DEBUG) Log.d(TAG, "PLAY_INTERVAL_TIMEOUT set for " + delay + "ms from now");
1189            mHandler.sendMessageDelayed(msg, delay);
1190        }
1191    }
1192
1193    /**
1194     * This is called from AudioService. It will return whether this device supports abs volume.
1195     * NOT USED AT THE MOMENT.
1196     */
1197    public boolean isAbsoluteVolumeSupported() {
1198        return ((mFeatures & BTRC_FEAT_ABSOLUTE_VOLUME) != 0);
1199    }
1200
1201    /**
1202     * We get this call from AudioService. This will send a message to our handler object,
1203     * requesting our handler to call setVolumeNative()
1204     */
1205    public void adjustVolume(int direction) {
1206        Message msg = mHandler.obtainMessage(MSG_ADJUST_VOLUME, direction, 0);
1207        mHandler.sendMessage(msg);
1208    }
1209
1210    public void setAbsoluteVolume(int volume) {
1211        if (volume == mLocalVolume) {
1212            if (DEBUG) Log.v(TAG, "setAbsoluteVolume is setting same index, ignore "+volume);
1213            return;
1214        }
1215
1216        mHandler.removeMessages(MSG_ADJUST_VOLUME);
1217        Message msg = mHandler.obtainMessage(MSG_SET_ABSOLUTE_VOLUME, volume, 0);
1218        mHandler.sendMessage(msg);
1219    }
1220
1221    /* Called in the native layer as a btrc_callback to return the volume set on the carkit in the
1222     * case when the volume is change locally on the carkit. This notification is not called when
1223     * the volume is changed from the phone.
1224     *
1225     * This method will send a message to our handler to change the local stored volume and notify
1226     * AudioService to update the UI
1227     */
1228    private void volumeChangeRequestFromNative(byte[] address, int volume, int ctype) {
1229        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_VOLUME_CHANGE, volume, ctype);
1230        Bundle data = new Bundle();
1231        data.putByteArray("BdAddress" , address);
1232        msg.setData(data);
1233        mHandler.sendMessage(msg);
1234    }
1235
1236    private void getFolderItemsRequestFromNative(
1237            byte[] address, byte scope, long startItem, long endItem, byte numAttr, int[] attrIds) {
1238        if (DEBUG) Log.v(TAG, "getFolderItemsRequestFromNative: scope=" + scope + ", numAttr=" + numAttr);
1239        AvrcpCmd avrcpCmdobj = new AvrcpCmd();
1240        AvrcpCmd.FolderItemsCmd folderObj = avrcpCmdobj.new FolderItemsCmd(address, scope,
1241                startItem, endItem, numAttr, attrIds);
1242        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_FOLDER_ITEMS, 0, 0);
1243        msg.obj = folderObj;
1244        mHandler.sendMessage(msg);
1245    }
1246
1247    private void setAddressedPlayerRequestFromNative(byte[] address, int playerId) {
1248        if (DEBUG) Log.v(TAG, "setAddrPlayerRequestFromNative: playerId=" + playerId);
1249        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_SET_ADDR_PLAYER, playerId, 0);
1250        msg.obj = address;
1251        mHandler.sendMessage(msg);
1252    }
1253
1254    private void setBrowsedPlayerRequestFromNative(byte[] address, int playerId) {
1255        if (DEBUG) Log.v(TAG, "setBrPlayerRequestFromNative: playerId=" + playerId);
1256        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_SET_BR_PLAYER, playerId, 0);
1257        msg.obj = address;
1258        mHandler.sendMessage(msg);
1259    }
1260
1261    private void changePathRequestFromNative(byte[] address, byte direction, byte[] folderUid) {
1262        if (DEBUG) Log.v(TAG, "changePathRequestFromNative: direction=" + direction);
1263        Bundle data = new Bundle();
1264        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_CHANGE_PATH);
1265        data.putByteArray("BdAddress" , address);
1266        data.putByteArray("folderUid" , folderUid);
1267        data.putByte("direction" , direction);
1268        msg.setData(data);
1269        mHandler.sendMessage(msg);
1270    }
1271
1272    private void getItemAttrRequestFromNative(byte[] address, byte scope, byte[] itemUid, int uidCounter,
1273            byte numAttr, int[] attrs) {
1274        if (DEBUG) Log.v(TAG, "getItemAttrRequestFromNative: scope=" + scope + ", numAttr=" + numAttr);
1275        AvrcpCmd avrcpCmdobj = new AvrcpCmd();
1276        AvrcpCmd.ItemAttrCmd itemAttr = avrcpCmdobj.new ItemAttrCmd(address, scope,
1277                itemUid, uidCounter, numAttr, attrs);
1278        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_ITEM_ATTR);
1279        msg.obj = itemAttr;
1280        mHandler.sendMessage(msg);
1281    }
1282
1283    private void searchRequestFromNative(byte[] address, int charsetId, byte[] searchStr) {
1284        if (DEBUG) Log.v(TAG, "searchRequestFromNative");
1285        /* Search is not supported */
1286        if (DEBUG) Log.d(TAG, "search is not supported");
1287        searchRspNative(address, AvrcpConstants.RSP_SRCH_NOT_SPRTD, 0, 0);
1288    }
1289
1290    private void playItemRequestFromNative(byte[] address, byte scope, int uidCounter, byte[] uid) {
1291        if (DEBUG) Log.v(TAG, "playItemRequestFromNative: scope=" + scope);
1292        Bundle data = new Bundle();
1293        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_PLAY_ITEM);
1294        data.putByteArray("BdAddress" , address);
1295        data.putByteArray("uid" , uid);
1296        data.putInt("uidCounter" , uidCounter);
1297        data.putByte("scope" , scope);
1298        msg.setData(data);
1299        mHandler.sendMessage(msg);
1300    }
1301
1302    private void addToPlayListRequestFromNative(byte[] address, byte scope, byte[] uid, int uidCounter) {
1303        if (DEBUG) Log.v(TAG, "addToPlayListRequestFromNative: scope=" + scope);
1304        /* add to NowPlaying not supported */
1305        Log.w(TAG, "Add to NowPlayingList is not supported");
1306        addToNowPlayingRspNative(address, AvrcpConstants.RSP_INTERNAL_ERR);
1307    }
1308
1309    private void getTotalNumOfItemsRequestFromNative(byte[] address, byte scope) {
1310        if (DEBUG) Log.v(TAG, "getTotalNumOfItemsRequestFromNative: scope=" + scope);
1311        Bundle data = new Bundle();
1312        Message msg = mHandler.obtainMessage(MSG_NATIVE_REQ_GET_TOTAL_NUM_OF_ITEMS);
1313        msg.arg1 = scope;
1314        msg.obj = address;
1315        mHandler.sendMessage(msg);
1316    }
1317
1318    private void notifyVolumeChanged(int volume) {
1319        mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, volume,
1320                      AudioManager.FLAG_SHOW_UI | AudioManager.FLAG_BLUETOOTH_ABS_VOLUME);
1321    }
1322
1323    private int convertToAudioStreamVolume(int volume) {
1324        // Rescale volume to match AudioSystem's volume
1325        return (int) Math.floor((double) volume*mAudioStreamMax/AVRCP_MAX_VOL);
1326    }
1327
1328    private int convertToAvrcpVolume(int volume) {
1329        return (int) Math.ceil((double) volume*AVRCP_MAX_VOL/mAudioStreamMax);
1330    }
1331
1332    private void blackListCurrentDevice() {
1333        mFeatures &= ~BTRC_FEAT_ABSOLUTE_VOLUME;
1334        mAudioManager.avrcpSupportsAbsoluteVolume(mAddress, isAbsoluteVolumeSupported());
1335
1336        SharedPreferences pref = mContext.getSharedPreferences(ABSOLUTE_VOLUME_BLACKLIST,
1337                Context.MODE_PRIVATE);
1338        SharedPreferences.Editor editor = pref.edit();
1339        editor.putBoolean(mAddress, true);
1340        editor.apply();
1341    }
1342
1343    private int modifyRcFeatureFromBlacklist(int feature, String address) {
1344        SharedPreferences pref = mContext.getSharedPreferences(ABSOLUTE_VOLUME_BLACKLIST,
1345                Context.MODE_PRIVATE);
1346        if (!pref.contains(address)) {
1347            return feature;
1348        }
1349        if (pref.getBoolean(address, false)) {
1350            feature &= ~BTRC_FEAT_ABSOLUTE_VOLUME;
1351        }
1352        return feature;
1353    }
1354
1355    public void resetBlackList(String address) {
1356        SharedPreferences pref = mContext.getSharedPreferences(ABSOLUTE_VOLUME_BLACKLIST,
1357                Context.MODE_PRIVATE);
1358        SharedPreferences.Editor editor = pref.edit();
1359        editor.remove(address);
1360        editor.apply();
1361    }
1362
1363    /**
1364     * This is called from A2dpStateMachine to set A2dp audio state.
1365     */
1366    public void setA2dpAudioState(int state) {
1367        Message msg = mHandler.obtainMessage(MSG_SET_A2DP_AUDIO_STATE, state, 0);
1368        mHandler.sendMessage(msg);
1369    }
1370
1371    private class AvrcpServiceBootReceiver extends BroadcastReceiver {
1372        @Override
1373        public void onReceive(Context context, Intent intent) {
1374            String action = intent.getAction();
1375            if (action.equals(Intent.ACTION_BOOT_COMPLETED)) {
1376                if (DEBUG) Log.d(TAG, "Boot completed, initializing player lists");
1377                /* initializing media player's list */
1378                (new BrowsablePlayerListBuilder()).start();
1379            }
1380        }
1381    }
1382
1383    private class AvrcpServiceBroadcastReceiver extends BroadcastReceiver {
1384        @Override
1385        public void onReceive(Context context, Intent intent) {
1386            String action = intent.getAction();
1387            if (DEBUG) Log.d(TAG, "AvrcpServiceBroadcastReceiver-> Action: " + action);
1388
1389            if (action.equals(Intent.ACTION_PACKAGE_REMOVED)
1390                    || action.equals(Intent.ACTION_PACKAGE_DATA_CLEARED)) {
1391                if (!intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {
1392                    // a package is being removed, not replaced
1393                    String packageName = intent.getData().getSchemeSpecificPart();
1394                    if (packageName != null) {
1395                        handlePackageModified(packageName, true);
1396                    }
1397                }
1398
1399            } else if (action.equals(Intent.ACTION_PACKAGE_ADDED)
1400                    || action.equals(Intent.ACTION_PACKAGE_CHANGED)) {
1401                String packageName = intent.getData().getSchemeSpecificPart();
1402                if (DEBUG) Log.d(TAG,"AvrcpServiceBroadcastReceiver-> packageName: "
1403                        + packageName);
1404                if (packageName != null) {
1405                    handlePackageModified(packageName, false);
1406                }
1407            }
1408        }
1409    }
1410
1411    private void handlePackageModified(String packageName, boolean removed) {
1412        if (DEBUG) Log.d(TAG, "packageName: " + packageName + " removed: " + removed);
1413
1414        if (removed) {
1415            // old package is removed, updating local browsable player's list
1416            if (isBrowseSupported(packageName)) {
1417                removePackageFromBrowseList(packageName);
1418            }
1419        } else {
1420            // new package has been added.
1421            if (isBrowsableListUpdated(packageName)) {
1422                // Rebuilding browsable players list
1423                (new BrowsablePlayerListBuilder()).start();
1424            }
1425        }
1426    }
1427
1428    private boolean isBrowsableListUpdated(String newPackageName) {
1429        // getting the browsable media players list from package manager
1430        Intent intent = new Intent("android.media.browse.MediaBrowserService");
1431        List<ResolveInfo> resInfos = mPackageManager.queryIntentServices(intent,
1432                                         PackageManager.MATCH_ALL);
1433        for (ResolveInfo resolveInfo : resInfos) {
1434            if (resolveInfo.serviceInfo.packageName.equals(newPackageName)) {
1435                if (DEBUG)
1436                    Log.d(TAG,
1437                            "isBrowsableListUpdated: package includes MediaBrowserService, true");
1438                return true;
1439            }
1440        }
1441
1442        // if list has different size
1443        if (resInfos.size() != mBrowsePlayerInfoList.size()) {
1444            if (DEBUG) Log.d(TAG, "isBrowsableListUpdated: browsable list size mismatch, true");
1445            return true;
1446        }
1447
1448        Log.d(TAG, "isBrowsableListUpdated: false");
1449        return false;
1450    }
1451
1452    private void removePackageFromBrowseList(String packageName) {
1453        if (DEBUG) Log.d(TAG, "removePackageFromBrowseList: " + packageName);
1454        synchronized (mBrowsePlayerInfoList) {
1455            int browseInfoID = getBrowseId(packageName);
1456            if (browseInfoID != -1) {
1457                mBrowsePlayerInfoList.remove(browseInfoID);
1458            }
1459        }
1460    }
1461
1462    /*
1463     * utility function to get the browse player index from global browsable
1464     * list. It may return -1 if specified package name is not in the list.
1465     */
1466    private int getBrowseId(String packageName) {
1467        boolean response = false;
1468        int browseInfoID = 0;
1469        synchronized (mBrowsePlayerInfoList) {
1470            for (BrowsePlayerInfo info : mBrowsePlayerInfoList) {
1471                if (info.packageName.equals(packageName)) {
1472                    response = true;
1473                    break;
1474                }
1475                browseInfoID++;
1476            }
1477        }
1478
1479        if (!response) {
1480            browseInfoID = -1;
1481        }
1482
1483        if (DEBUG) Log.d(TAG, "getBrowseId for packageName: " + packageName +
1484                " , browseInfoID: " + browseInfoID);
1485        return browseInfoID;
1486    }
1487
1488    private void setAddressedPlayer(byte[] bdaddr, int selectedId) {
1489        int status = AvrcpConstants.RSP_NO_ERROR;
1490
1491        synchronized (mMediaPlayerInfoList) {
1492            if (mMediaPlayerInfoList.isEmpty()) {
1493                status = AvrcpConstants.RSP_NO_AVBL_PLAY;
1494                Log.w(TAG, " No Available Players to set, sending response back ");
1495            } else if (!mMediaPlayerInfoList.containsKey(selectedId)) {
1496                status = AvrcpConstants.RSP_INV_PLAYER;
1497                Log.w(TAG, " Invalid Player id: " + selectedId + " to set, sending response back ");
1498            } else if (!isPlayerAlreadyAddressed(selectedId)) {
1499                // register new Media Controller Callback and update the current Ids
1500                if (!updateCurrentController(selectedId, mCurrBrowsePlayerID)) {
1501                    status = AvrcpConstants.RSP_INTERNAL_ERR;
1502                    Log.e(TAG, "register for new Address player failed: " + mCurrAddrPlayerID);
1503                }
1504            } else {
1505                MediaPlayerInfo info = getAddressedPlayerInfo();
1506                Log.i(TAG, "addressed player " + info + "is already focused");
1507            }
1508        }
1509
1510        if (DEBUG) Log.d(TAG, "setAddressedPlayer for selectedId: " + selectedId +
1511                " , status: " + status);
1512        // Sending address player response to remote
1513        setAddressedPlayerRspNative(bdaddr, status);
1514    }
1515
1516    private void setBrowsedPlayer(byte[] bdaddr, int selectedId) {
1517        int status = AvrcpConstants.RSP_NO_ERROR;
1518
1519        // checking for error cases
1520        if (mMediaPlayerInfoList.isEmpty()) {
1521            status = AvrcpConstants.RSP_NO_AVBL_PLAY;
1522            Log.w(TAG, " No Available Players to set, sending response back ");
1523        } else {
1524            // update current browse player id and start browsing service
1525            updateNewIds(mCurrAddrPlayerID, selectedId);
1526            String browsedPackage = getPackageName(selectedId);
1527
1528            if (!isPackageNameValid(browsedPackage)) {
1529                Log.w(TAG, " Invalid package for id:" + mCurrBrowsePlayerID);
1530                status = AvrcpConstants.RSP_INV_PLAYER;
1531            } else if (!isBrowseSupported(browsedPackage)) {
1532                Log.w(TAG, "Browse unsupported for id:" + mCurrBrowsePlayerID
1533                        + ", packagename : " + browsedPackage);
1534                status = AvrcpConstants.RSP_PLAY_NOT_BROW;
1535            } else if (!startBrowseService(bdaddr, browsedPackage)) {
1536                Log.e(TAG, "service cannot be started for browse player id:" + mCurrBrowsePlayerID
1537                        + ", packagename : " + browsedPackage);
1538                status = AvrcpConstants.RSP_INTERNAL_ERR;
1539            }
1540        }
1541
1542        if (status != AvrcpConstants.RSP_NO_ERROR) {
1543            setBrowsedPlayerRspNative(bdaddr, status, (byte) 0x00, 0, null);
1544        }
1545
1546        if (DEBUG) Log.d(TAG, "setBrowsedPlayer for selectedId: " + selectedId +
1547                " , status: " + status);
1548    }
1549
1550    private MediaSessionManager.OnActiveSessionsChangedListener mActiveSessionListener =
1551            new MediaSessionManager.OnActiveSessionsChangedListener() {
1552
1553                @Override
1554                public void onActiveSessionsChanged(
1555                        List<android.media.session.MediaController> newControllers) {
1556                    boolean playersChanged = false;
1557
1558                    // Update the current players
1559                    for (android.media.session.MediaController controller : newControllers) {
1560                        addMediaPlayerController(controller);
1561                        playersChanged = true;
1562                    }
1563
1564                    List<android.media.session.MediaController> currentControllers =
1565                            getMediaControllers();
1566                    for (android.media.session.MediaController controller : currentControllers) {
1567                        if (!newControllers.contains(controller)) {
1568                            removeMediaPlayerInfo(controller.getPackageName());
1569                            playersChanged = true;
1570                        }
1571                    }
1572
1573                    if (playersChanged) {
1574                        mHandler.sendEmptyMessage(MSG_AVAILABLE_PLAYERS_CHANGED_RSP);
1575                        if (newControllers.size() > 0 && (mMediaController == null)) {
1576                            if (DEBUG)
1577                                Log.v(TAG,
1578                                        "No addressed player but active sessions, taking first.");
1579                            setAddressedMediaSessionPackage(newControllers.get(0).getPackageName());
1580                        }
1581                    }
1582                }
1583            };
1584
1585    private void setAddressedMediaSessionPackage(String packageName) {
1586        if (DEBUG) Log.v(TAG, "Setting addressed media session to " + packageName);
1587        // Can't set no player, that handled by onActiveSessionsChanged
1588        if (packageName == null) return;
1589        // No change.
1590        if (getPackageName(mCurrAddrPlayerID).equals(packageName)) return;
1591        // If the player doesn't exist, we need to add it.
1592        if (getMediaPlayerInfo(packageName) == null) {
1593            addMediaPlayerPackage(packageName);
1594            mHandler.sendEmptyMessage(MSG_AVAILABLE_PLAYERS_CHANGED_RSP);
1595        }
1596        synchronized (mMediaPlayerInfoList) {
1597            for (Map.Entry<Integer, MediaPlayerInfo> entry : mMediaPlayerInfoList.entrySet()) {
1598                if (entry.getValue().getPackageName().equals(packageName)) {
1599                    int newAddrID = entry.getKey();
1600                    if (DEBUG) Log.v(TAG, "Set addressed #" + newAddrID + " " + entry.getValue());
1601                    updateCurrentController(newAddrID, mCurrBrowsePlayerID);
1602                    mHandler.obtainMessage(MSG_ADDRESSED_PLAYER_CHANGED_RSP, newAddrID, 0)
1603                            .sendToTarget();
1604                    return;
1605                }
1606            }
1607        }
1608        // We shouldn't ever get here.
1609        Log.e(TAG, "Player info for " + packageName + " doesn't exist!");
1610    }
1611
1612    private void setActiveMediaSession(MediaSession.Token token) {
1613        android.media.session.MediaController activeController =
1614                new android.media.session.MediaController(mContext, token);
1615        if (DEBUG) Log.v(TAG, "Set active media session " + activeController.getPackageName());
1616        addMediaPlayerController(activeController);
1617        setAddressedMediaSessionPackage(activeController.getPackageName());
1618    }
1619
1620    private boolean startBrowseService(byte[] bdaddr, String packageName) {
1621        boolean status = true;
1622
1623        /* creating new instance for Browse Media Player */
1624        String browseService = getBrowseServiceName(packageName);
1625        if (!browseService.isEmpty()) {
1626            mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr).setBrowsed(
1627                    packageName, browseService);
1628        } else {
1629            Log.w(TAG, "No Browser service available for " + packageName);
1630            status = false;
1631        }
1632
1633        if (DEBUG) Log.d(TAG, "startBrowseService for packageName: " + packageName +
1634                ", status = " + status);
1635        return status;
1636    }
1637
1638    private String getBrowseServiceName(String packageName) {
1639        String browseServiceName = "";
1640
1641        // getting the browse service name from browse player info
1642        synchronized (mBrowsePlayerInfoList) {
1643            int browseInfoID = getBrowseId(packageName);
1644            if (browseInfoID != -1) {
1645                browseServiceName = mBrowsePlayerInfoList.get(browseInfoID).serviceClass;
1646            }
1647        }
1648
1649        if (DEBUG) Log.d(TAG, "getBrowseServiceName for packageName: " + packageName +
1650                ", browseServiceName = " + browseServiceName);
1651        return browseServiceName;
1652    }
1653
1654    private class BrowsablePlayerListBuilder extends MediaBrowser.ConnectionCallback {
1655        List<ResolveInfo> mWaiting;
1656        BrowsePlayerInfo mCurrentPlayer;
1657        MediaBrowser mCurrentBrowser;
1658        boolean mPlayersChanged;
1659
1660        public BrowsablePlayerListBuilder() {}
1661
1662        public void start() {
1663            mBrowsePlayerInfoList.clear();
1664            mPlayersChanged = false;
1665            Intent intent = new Intent(android.service.media.MediaBrowserService.SERVICE_INTERFACE);
1666            mWaiting = mPackageManager.queryIntentServices(intent, PackageManager.MATCH_ALL);
1667            connectNextPlayer();
1668        }
1669
1670        private void connectNextPlayer() {
1671            if (mWaiting.isEmpty()) {
1672                // Done. Send players changed if needed.
1673                if (mPlayersChanged) {
1674                    registerNotificationRspAvalPlayerChangedNative(
1675                            AvrcpConstants.NOTIFICATION_TYPE_CHANGED);
1676                }
1677                return;
1678            }
1679            ResolveInfo info = mWaiting.remove(0);
1680            String displayableName = info.loadLabel(mPackageManager).toString();
1681            String serviceName = info.serviceInfo.name;
1682            String packageName = info.serviceInfo.packageName;
1683
1684            mCurrentPlayer = new BrowsePlayerInfo(packageName, displayableName, serviceName);
1685            mCurrentBrowser = new MediaBrowser(
1686                    mContext, new ComponentName(packageName, serviceName), this, null);
1687            if (DEBUG) Log.d(TAG, "Trying to connect to " + serviceName);
1688            mCurrentBrowser.connect();
1689        }
1690
1691        @Override
1692        public void onConnected() {
1693            Log.d(TAG, "BrowsablePlayerListBuilder: " + mCurrentPlayer.packageName + " OK");
1694            mBrowsePlayerInfoList.add(mCurrentPlayer);
1695            MediaPlayerInfo info = getMediaPlayerInfo(mCurrentPlayer.packageName);
1696            if (info != null) {
1697                // Refresh the media player entry so it notices we can browse
1698                MediaController controller = info.getMediaController();
1699                if (controller != null) {
1700                    addMediaPlayerController(controller.getWrappedInstance());
1701                }
1702                // If there's no controller, the entry is already browsable-only.
1703            } else {
1704                addMediaPlayerPackage(mCurrentPlayer.packageName);
1705            }
1706            mPlayersChanged = true;
1707            mCurrentBrowser.disconnect();
1708            connectNextPlayer();
1709        }
1710
1711        @Override
1712        public void onConnectionFailed() {
1713            Log.d(TAG, "BrowsablePlayerListBuilder: " + mCurrentPlayer.packageName + " FAIL");
1714            connectNextPlayer();
1715        }
1716    }
1717
1718    private void startBrowsedPlayer(int browseId) {
1719        if (browseId < 0 || browseId >= mBrowsePlayerInfoList.size()) return;
1720        BrowsePlayerInfo player = mBrowsePlayerInfoList.get(browseId);
1721
1722        Intent intent = new Intent();
1723        intent.setComponent(new ComponentName(player.packageName, player.serviceClass));
1724        Log.i(TAG, "Starting service:" + player.packageName + ", " + player.serviceClass);
1725        try {
1726            mContext.startService(intent);
1727        } catch (SecurityException ex) {
1728            Log.e(TAG, "Can't start " + player.serviceClass + ": " + ex.getMessage());
1729        }
1730    }
1731
1732    /* Initializes list of media players identified from session manager active sessions */
1733    private void initMediaPlayersList() {
1734        synchronized (mMediaPlayerInfoList) {
1735            // Clearing old browsable player's list
1736            mMediaPlayerInfoList.clear();
1737
1738            if (mMediaSessionManager == null) {
1739                if (DEBUG) Log.w(TAG, "initMediaPlayersList: no media session manager!");
1740                return;
1741            }
1742
1743            List<android.media.session.MediaController> controllers =
1744                    mMediaSessionManager.getActiveSessions(null);
1745            if (DEBUG)
1746                Log.v(TAG, "initMediaPlayerInfoList: " + controllers.size() + " controllers");
1747            /* Initializing all media players */
1748            for (android.media.session.MediaController controller : controllers) {
1749                addMediaPlayerController(controller);
1750            }
1751            if (controllers.size() > 0) {
1752                mHandler.sendEmptyMessage(MSG_AVAILABLE_PLAYERS_CHANGED_RSP);
1753            }
1754
1755            if (mMediaPlayerInfoList.size() > 0) {
1756                // Set the first one as the Addressed Player
1757                updateCurrentController(mMediaPlayerInfoList.firstKey(), -1);
1758            }
1759        }
1760    }
1761
1762    private List<android.media.session.MediaController> getMediaControllers() {
1763        List<android.media.session.MediaController> controllers =
1764                new ArrayList<android.media.session.MediaController>();
1765        synchronized (mMediaPlayerInfoList) {
1766            for (MediaPlayerInfo info : mMediaPlayerInfoList.values()) {
1767                if (info.getMediaController() != null) {
1768                    controllers.add(info.getMediaController().getWrappedInstance());
1769                }
1770            }
1771        }
1772        return controllers;
1773    }
1774
1775    /** Add (or update) a player to the media player list without a controller */
1776    private boolean addMediaPlayerPackage(String packageName) {
1777        MediaPlayerInfo info = new MediaPlayerInfo(null, AvrcpConstants.PLAYER_TYPE_AUDIO,
1778                AvrcpConstants.PLAYER_SUBTYPE_NONE, getPlayStateBytes(null),
1779                getFeatureBitMask(packageName), packageName, getAppLabel(packageName));
1780        return addMediaPlayerInfo(info);
1781    }
1782
1783    /** Add (or update) a player to the media player list given an active controller */
1784    private boolean addMediaPlayerController(android.media.session.MediaController controller) {
1785        String packageName = controller.getPackageName();
1786        MediaPlayerInfo info = new MediaPlayerInfo(MediaController.wrap(controller),
1787                AvrcpConstants.PLAYER_TYPE_AUDIO, AvrcpConstants.PLAYER_SUBTYPE_NONE,
1788                getPlayStateBytes(controller.getPlaybackState()), getFeatureBitMask(packageName),
1789                controller.getPackageName(), getAppLabel(packageName));
1790        return addMediaPlayerInfo(info);
1791    }
1792
1793    /** Add or update a player to the media player list given the MediaPlayerInfo object.
1794     *  @return true if an item was updated, false if it was added instead
1795     */
1796    private boolean addMediaPlayerInfo(MediaPlayerInfo info) {
1797        if (DEBUG) Log.d(TAG, "add " + info.toString());
1798        int updateId = -1;
1799        boolean updated = false;
1800        synchronized (mMediaPlayerInfoList) {
1801            for (Map.Entry<Integer, MediaPlayerInfo> entry : mMediaPlayerInfoList.entrySet()) {
1802                if (info.getPackageName().equals(entry.getValue().getPackageName())) {
1803                    updateId = entry.getKey();
1804                    updated = true;
1805                    break;
1806                }
1807            }
1808            if (updateId == -1) {
1809                // New player
1810                mLastUsedPlayerID++;
1811                updateId = mLastUsedPlayerID;
1812            } else if (updateId == mCurrAddrPlayerID) {
1813                updateCurrentController(mCurrAddrPlayerID, mCurrBrowsePlayerID);
1814            }
1815            mMediaPlayerInfoList.put(updateId, info);
1816        }
1817        return updated;
1818    }
1819
1820    /** Remove all players related to |packageName| from the media player info list */
1821    private MediaPlayerInfo removeMediaPlayerInfo(String packageName) {
1822        synchronized (mMediaPlayerInfoList) {
1823            int removeKey = -1;
1824            for (Map.Entry<Integer, MediaPlayerInfo> entry : mMediaPlayerInfoList.entrySet()) {
1825                if (entry.getValue().getPackageName().equals(packageName)) {
1826                    removeKey = entry.getKey();
1827                    break;
1828                }
1829            }
1830            if (removeKey != -1) {
1831                return mMediaPlayerInfoList.remove(removeKey);
1832            }
1833
1834            return null;
1835        }
1836    }
1837
1838    /*
1839     * utility function to get the playback state of any media player through
1840     * media controller APIs.
1841     */
1842    private byte getPlayStateBytes(PlaybackState pbState) {
1843        byte playStateBytes = PLAYSTATUS_STOPPED;
1844
1845        if (pbState != null) {
1846            playStateBytes = (byte)convertPlayStateToBytes(pbState.getState());
1847            Log.v(TAG, "getPlayBackState: playStateBytes = " + playStateBytes);
1848        } else {
1849            Log.w(TAG, "playState object null, sending playStateBytes = " + playStateBytes);
1850        }
1851
1852        return playStateBytes;
1853    }
1854
1855    /*
1856     * utility function to map framework's play state values to AVRCP spec
1857     * defined play status values
1858     */
1859    private int convertPlayStateToBytes(int playState) {
1860        switch (playState) {
1861            case PlaybackState.STATE_PLAYING:
1862            case PlaybackState.STATE_BUFFERING:
1863                return PLAYSTATUS_PLAYING;
1864
1865            case PlaybackState.STATE_STOPPED:
1866            case PlaybackState.STATE_NONE:
1867            case PlaybackState.STATE_CONNECTING:
1868                return PLAYSTATUS_STOPPED;
1869
1870            case PlaybackState.STATE_PAUSED:
1871                return PLAYSTATUS_PAUSED;
1872
1873            case PlaybackState.STATE_FAST_FORWARDING:
1874            case PlaybackState.STATE_SKIPPING_TO_NEXT:
1875            case PlaybackState.STATE_SKIPPING_TO_QUEUE_ITEM:
1876                return PLAYSTATUS_FWD_SEEK;
1877
1878            case PlaybackState.STATE_REWINDING:
1879            case PlaybackState.STATE_SKIPPING_TO_PREVIOUS:
1880                return PLAYSTATUS_REV_SEEK;
1881
1882            case PlaybackState.STATE_ERROR:
1883            default:
1884                return PLAYSTATUS_ERROR;
1885        }
1886    }
1887
1888    /*
1889     * utility function to get the feature bit mask of any media player through
1890     * package name
1891     */
1892    private short[] getFeatureBitMask(String packageName) {
1893
1894        ArrayList<Short> featureBitsList = new ArrayList<Short>();
1895
1896        /* adding default feature bits */
1897        featureBitsList.add(AvrcpConstants.AVRC_PF_PLAY_BIT_NO);
1898        featureBitsList.add(AvrcpConstants.AVRC_PF_STOP_BIT_NO);
1899        featureBitsList.add(AvrcpConstants.AVRC_PF_PAUSE_BIT_NO);
1900        featureBitsList.add(AvrcpConstants.AVRC_PF_REWIND_BIT_NO);
1901        featureBitsList.add(AvrcpConstants.AVRC_PF_FAST_FWD_BIT_NO);
1902        featureBitsList.add(AvrcpConstants.AVRC_PF_FORWARD_BIT_NO);
1903        featureBitsList.add(AvrcpConstants.AVRC_PF_BACKWARD_BIT_NO);
1904        featureBitsList.add(AvrcpConstants.AVRC_PF_ADV_CTRL_BIT_NO);
1905
1906        /* Add/Modify browse player supported features. */
1907        if (isBrowseSupported(packageName)) {
1908            featureBitsList.add(AvrcpConstants.AVRC_PF_BROWSE_BIT_NO);
1909            featureBitsList.add(AvrcpConstants.AVRC_PF_UID_UNIQUE_BIT_NO);
1910            featureBitsList.add(AvrcpConstants.AVRC_PF_NOW_PLAY_BIT_NO);
1911            featureBitsList.add(AvrcpConstants.AVRC_PF_GET_NUM_OF_ITEMS_BIT_NO);
1912        }
1913
1914        // converting arraylist to array for response
1915        short[] featureBitsArray = new short[featureBitsList.size()];
1916
1917        for (int i = 0; i < featureBitsList.size(); i++) {
1918            featureBitsArray[i] = featureBitsList.get(i).shortValue();
1919        }
1920
1921        return featureBitsArray;
1922    }
1923
1924    /**
1925     * Checks the Package name if it supports Browsing or not.
1926     *
1927     * @param packageName - name of the package to get the Id.
1928     * @return true if it supports browsing, else false.
1929     */
1930    private boolean isBrowseSupported(String packageName) {
1931        synchronized (mBrowsePlayerInfoList) {
1932            /* check if Browsable Player's list contains this package name */
1933            for (BrowsePlayerInfo info : mBrowsePlayerInfoList) {
1934                if (info.packageName.equals(packageName)) {
1935                    if (DEBUG) Log.v(TAG, "isBrowseSupported for " + packageName + ": true");
1936                    return true;
1937                }
1938            }
1939        }
1940
1941        if (DEBUG) Log.v(TAG, "isBrowseSupported for " + packageName + ": false");
1942        return false;
1943    }
1944
1945    private String getPackageName(int id) {
1946        MediaPlayerInfo player = null;
1947        synchronized (mMediaPlayerInfoList) {
1948            player = mMediaPlayerInfoList.getOrDefault(id, null);
1949        }
1950
1951        if (player == null) {
1952            Log.w(TAG, "No package name for player (" + id + " not valid)");
1953            return "";
1954        }
1955
1956        String packageName = player.getPackageName();
1957        if (DEBUG) Log.v(TAG, "Player " + id + " package: " + packageName);
1958        return packageName;
1959    }
1960
1961    /* from the global object, getting the current browsed player's package name */
1962    private String getCurrentBrowsedPlayer(byte[] bdaddr) {
1963        String browsedPlayerPackage = "";
1964
1965        Map<String, BrowsedMediaPlayer> connList = mAvrcpBrowseManager.getConnList();
1966        String bdaddrStr = new String(bdaddr);
1967        if(connList.containsKey(bdaddrStr)){
1968            browsedPlayerPackage = connList.get(bdaddrStr).getPackageName();
1969        }
1970        if (DEBUG) Log.v(TAG, "getCurrentBrowsedPlayerPackage: " + browsedPlayerPackage);
1971        return browsedPlayerPackage;
1972    }
1973
1974    /* Returns the MediaPlayerInfo for the currently addressed media player */
1975    private MediaPlayerInfo getAddressedPlayerInfo() {
1976        synchronized (mMediaPlayerInfoList) {
1977            return mMediaPlayerInfoList.getOrDefault(mCurrAddrPlayerID, null);
1978        }
1979    }
1980
1981    /*
1982     * Utility function to get the Media player info from package name returns
1983     * null if package name not found in media players list
1984     */
1985    private MediaPlayerInfo getMediaPlayerInfo(String packageName) {
1986        synchronized (mMediaPlayerInfoList) {
1987            if (mMediaPlayerInfoList.isEmpty()) {
1988                if (DEBUG) Log.v(TAG, "getMediaPlayerInfo: Media players list empty");
1989                return null;
1990            }
1991
1992            for (MediaPlayerInfo info : mMediaPlayerInfoList.values()) {
1993                if (packageName.equals(info.getPackageName())) {
1994                    if (DEBUG) Log.v(TAG, "getMediaPlayerInfo: Found " + packageName);
1995                    return info;
1996                }
1997            }
1998            if (DEBUG) Log.w(TAG, "getMediaPlayerInfo: " + packageName + " not found");
1999            return null;
2000        }
2001    }
2002
2003    /* prepare media list & return the media player list response object */
2004    private MediaPlayerListRsp prepareMediaPlayerRspObj() {
2005        synchronized (mMediaPlayerInfoList) {
2006            int numPlayers = mMediaPlayerInfoList.size();
2007
2008            int[] playerIds = new int[numPlayers];
2009            byte[] playerTypes = new byte[numPlayers];
2010            int[] playerSubTypes = new int[numPlayers];
2011            String[] displayableNameArray = new String[numPlayers];
2012            byte[] playStatusValues = new byte[numPlayers];
2013            short[] featureBitMaskValues =
2014                    new short[numPlayers * AvrcpConstants.AVRC_FEATURE_MASK_SIZE];
2015
2016            int players = 0;
2017            for (Map.Entry<Integer, MediaPlayerInfo> entry : mMediaPlayerInfoList.entrySet()) {
2018                MediaPlayerInfo info = entry.getValue();
2019                playerIds[players] = entry.getKey();
2020                playerTypes[players] = info.getMajorType();
2021                playerSubTypes[players] = info.getSubType();
2022                displayableNameArray[players] = info.getDisplayableName();
2023                playStatusValues[players] = info.getPlayStatus();
2024
2025                short[] featureBits = info.getFeatureBitMask();
2026                for (int numBit = 0; numBit < featureBits.length; numBit++) {
2027                    /* gives which octet this belongs to */
2028                    byte octet = (byte) (featureBits[numBit] / 8);
2029                    /* gives the bit position within the octet */
2030                    byte bit = (byte) (featureBits[numBit] % 8);
2031                    featureBitMaskValues[(players * AvrcpConstants.AVRC_FEATURE_MASK_SIZE)
2032                            + octet] |= (1 << bit);
2033                }
2034
2035                /* printLogs */
2036                if (DEBUG) {
2037                    Log.d(TAG, "Player " + playerIds[players] + ": " + displayableNameArray[players]
2038                                    + " type: " + playerTypes[players] + ", "
2039                                    + playerSubTypes[players] + " status: "
2040                                    + playStatusValues[players]);
2041                }
2042
2043                players++;
2044            }
2045
2046            if (DEBUG) Log.d(TAG, "prepareMediaPlayerRspObj: numPlayers = " + numPlayers);
2047
2048            return new MediaPlayerListRsp(AvrcpConstants.RSP_NO_ERROR, sUIDCounter, numPlayers,
2049                    AvrcpConstants.BTRC_ITEM_PLAYER, playerIds, playerTypes, playerSubTypes,
2050                    playStatusValues, featureBitMaskValues, displayableNameArray);
2051        }
2052    }
2053
2054     /* build media player list and send it to remote. */
2055    private void handleMediaPlayerListRsp(AvrcpCmd.FolderItemsCmd folderObj) {
2056        MediaPlayerListRsp rspObj = null;
2057        synchronized (mMediaPlayerInfoList) {
2058            int numPlayers = mMediaPlayerInfoList.size();
2059            if (numPlayers == 0) {
2060                mediaPlayerListRspNative(folderObj.mAddress, AvrcpConstants.RSP_NO_AVBL_PLAY,
2061                        (short) 0, (byte) 0, 0, null, null, null, null, null, null);
2062                return;
2063            }
2064            if (folderObj.mStartItem >= numPlayers) {
2065                Log.i(TAG, "handleMediaPlayerListRsp: start = " + folderObj.mStartItem
2066                                + " > num of items = " + numPlayers);
2067                mediaPlayerListRspNative(folderObj.mAddress, AvrcpConstants.RSP_INV_RANGE,
2068                        (short) 0, (byte) 0, 0, null, null, null, null, null, null);
2069                return;
2070            }
2071            rspObj = prepareMediaPlayerRspObj();
2072        }
2073        if (DEBUG) Log.d(TAG, "handleMediaPlayerListRsp: sending " + rspObj.mNumItems + " players");
2074        mediaPlayerListRspNative(folderObj.mAddress, rspObj.mStatus, rspObj.mUIDCounter,
2075                rspObj.itemType, rspObj.mNumItems, rspObj.mPlayerIds, rspObj.mPlayerTypes,
2076                rspObj.mPlayerSubTypes, rspObj.mPlayStatusValues, rspObj.mFeatureBitMaskValues,
2077                rspObj.mPlayerNameList);
2078    }
2079
2080    /* unregister to the old controller, update new IDs and register to the new controller */
2081    private boolean updateCurrentController(int addrId, int browseId) {
2082        boolean registerRsp = true;
2083
2084        updateNewIds(addrId, browseId);
2085
2086        MediaController newController = null;
2087        MediaPlayerInfo info = getAddressedPlayerInfo();
2088        if (info != null) {
2089            newController = info.getMediaController();
2090            if (newController == null) {
2091                // Browsable player, try to start it, which will trigger an update via
2092                // MesiaSessionManager
2093                startBrowsedPlayer(getBrowseId(info.getPackageName()));
2094            }
2095        }
2096
2097        if (DEBUG)
2098            Log.d(TAG, "updateCurrentController: " + mMediaController + " to " + newController);
2099        if (mMediaController == null || newController == null
2100                || (mMediaController.getWrappedInstance() != newController.getWrappedInstance())) {
2101            if (mMediaController != null) mMediaController.unregisterCallback(mMediaControllerCb);
2102            if (newController != null) {
2103                mMediaController = newController;
2104                mMediaController.registerCallback(mMediaControllerCb, mHandler);
2105                updateMetadata(mMediaController.getMetadata());
2106                mAddressedMediaPlayer.updateNowPlayingList(mMediaController.getQueue());
2107            } else {
2108                updateMetadata(null);
2109                mAddressedMediaPlayer.updateNowPlayingList(null);
2110                registerRsp = false;
2111            }
2112        }
2113        return registerRsp;
2114    }
2115
2116    /* Handle getfolderitems for scope = VFS, Search, NowPlayingList */
2117    private void handleGetFolderItemBrowseResponse(AvrcpCmd.FolderItemsCmd folderObj, byte[] bdaddr) {
2118        int status = AvrcpConstants.RSP_NO_ERROR;
2119
2120        /* Browsed player is already set */
2121        if (folderObj.mScope == AvrcpConstants.BTRC_SCOPE_FILE_SYSTEM) {
2122            if (mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr) == null) {
2123                Log.e(TAG, "handleGetFolderItemBrowseResponse: no browsed player set for "
2124                                + Utils.getAddressStringFromByte(bdaddr));
2125                getFolderItemsRspNative(bdaddr, AvrcpConstants.RSP_INTERNAL_ERR, (short) 0,
2126                        (byte) 0x00, 0, null, null, null, null, null, null, null, null);
2127                return;
2128            }
2129            mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr).getFolderItemsVFS(folderObj);
2130            return;
2131        }
2132        if (folderObj.mScope == AvrcpConstants.BTRC_SCOPE_NOW_PLAYING) {
2133            mAddressedMediaPlayer.getFolderItemsNowPlaying(bdaddr, folderObj, mMediaController);
2134            return;
2135        }
2136
2137        /* invalid scope */
2138        Log.e(TAG, "handleGetFolderItemBrowseResponse: unknown scope " + folderObj.mScope);
2139        getFolderItemsRspNative(bdaddr, AvrcpConstants.RSP_INV_SCOPE, (short) 0, (byte) 0x00, 0,
2140                null, null, null, null, null, null, null, null);
2141    }
2142
2143    /* utility function to update the global values of current Addressed and browsed player */
2144    private void updateNewIds(int addrId, int browseId) {
2145        mCurrAddrPlayerID = addrId;
2146        mCurrBrowsePlayerID = browseId;
2147
2148        if (DEBUG) Log.v(TAG, "Updated CurrentIds: AddrPlayerID:" + mCurrAddrPlayerID + " to "
2149                + addrId + ", BrowsePlayerID:" + mCurrBrowsePlayerID + " to " + browseId);
2150    }
2151
2152    /* Getting the application's displayable name from package name */
2153    private String getAppLabel(String packageName) {
2154        ApplicationInfo appInfo = null;
2155        try {
2156            appInfo = mPackageManager.getApplicationInfo(packageName, 0);
2157        } catch (NameNotFoundException e) {
2158            e.printStackTrace();
2159        }
2160
2161        return (String) (appInfo != null ? mPackageManager
2162                .getApplicationLabel(appInfo) : "Unknown");
2163    }
2164
2165    private void handlePlayItemResponse(byte[] bdaddr, byte[] uid, byte scope) {
2166        if (scope == AvrcpConstants.BTRC_SCOPE_NOW_PLAYING) {
2167            mAddressedMediaPlayer.playItem(bdaddr, uid, mMediaController);
2168        }
2169        else {
2170            if(!isAddrPlayerSameAsBrowsed(bdaddr)) {
2171                Log.w(TAG, "Remote requesting play item on uid which may not be recognized by" +
2172                        "current addressed player");
2173                playItemRspNative(bdaddr, AvrcpConstants.RSP_INV_ITEM);
2174            }
2175
2176            if (mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr) != null) {
2177                mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr).playItem(uid, scope);
2178            } else {
2179                Log.e(TAG, "handlePlayItemResponse: Remote requested playitem " +
2180                        "before setbrowsedplayer");
2181                playItemRspNative(bdaddr, AvrcpConstants.RSP_INTERNAL_ERR);
2182            }
2183        }
2184    }
2185
2186    private void handleGetItemAttr(AvrcpCmd.ItemAttrCmd itemAttr) {
2187        if(itemAttr.mScope == AvrcpConstants.BTRC_SCOPE_NOW_PLAYING) {
2188            mAddressedMediaPlayer.getItemAttr(itemAttr.mAddress, itemAttr, mMediaController);
2189        }
2190        else {
2191            if (mAvrcpBrowseManager.getBrowsedMediaPlayer(itemAttr.mAddress) != null)
2192                mAvrcpBrowseManager.getBrowsedMediaPlayer(itemAttr.mAddress).getItemAttr(itemAttr);
2193            else {
2194                Log.e(TAG, "Could not get attributes. mBrowsedMediaPlayer is null");
2195                getItemAttrRspNative(itemAttr.mAddress, AvrcpConstants.RSP_INTERNAL_ERR,
2196                        (byte) 0, null, null);
2197            }
2198        }
2199    }
2200
2201    private void handleGetTotalNumOfItemsResponse(byte[] bdaddr, byte scope) {
2202        // for scope as media player list
2203        if (scope == AvrcpConstants.BTRC_SCOPE_PLAYER_LIST) {
2204            int numPlayers = 0;
2205            synchronized (mMediaPlayerInfoList) {
2206                numPlayers = mMediaPlayerInfoList.size();
2207            }
2208            if (DEBUG) Log.d(TAG, "handleGetTotalNumOfItemsResponse: " + numPlayers + " players.");
2209            getTotalNumOfItemsRspNative(bdaddr, AvrcpConstants.RSP_NO_ERROR, 0, numPlayers);
2210        } else if (scope == AvrcpConstants.BTRC_SCOPE_NOW_PLAYING) {
2211            mAddressedMediaPlayer.getTotalNumOfItems(bdaddr, mMediaController);
2212        } else {
2213            // for FileSystem browsing scopes as VFS, Now Playing
2214            if (mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr) != null) {
2215                mAvrcpBrowseManager.getBrowsedMediaPlayer(bdaddr).getTotalNumOfItems(scope);
2216            } else {
2217                Log.e(TAG, "Could not get Total NumOfItems. mBrowsedMediaPlayer is null");
2218                getTotalNumOfItemsRspNative(bdaddr, AvrcpConstants.RSP_INTERNAL_ERR, 0, 0);
2219            }
2220        }
2221
2222    }
2223
2224    /* check if browsed player and addressed player are same */
2225    private boolean isAddrPlayerSameAsBrowsed(byte[] bdaddr) {
2226        String browsedPlayer = getCurrentBrowsedPlayer(bdaddr);
2227
2228        if (!isPackageNameValid(browsedPlayer)) {
2229            Log.w(TAG, "Browsed player name empty");
2230            return false;
2231        }
2232
2233        MediaPlayerInfo info = getAddressedPlayerInfo();
2234        String packageName = (info == null) ? "<none>" : info.getPackageName();
2235        if (info == null || !packageName.equals(browsedPlayer)) {
2236            if (DEBUG) Log.d(TAG, browsedPlayer + " is not addressed player " + packageName);
2237            return false;
2238        }
2239        return true;
2240    }
2241
2242    /* checks if package name is not null or empty */
2243    private boolean isPackageNameValid(String browsedPackage) {
2244        boolean isValid = (browsedPackage != null && browsedPackage.length() > 0);
2245        if (DEBUG) Log.d(TAG, "isPackageNameValid: browsedPackage = " + browsedPackage +
2246                "isValid = " + isValid);
2247        return isValid;
2248    }
2249
2250    /* checks if selected addressed player is already addressed */
2251    private boolean isPlayerAlreadyAddressed(int selectedId) {
2252        // checking if selected ID is same as the current addressed player id
2253        boolean isAddressed = (mCurrAddrPlayerID == selectedId);
2254        if (DEBUG) Log.d(TAG, "isPlayerAlreadyAddressed: isAddressed = " + isAddressed);
2255        return isAddressed;
2256    }
2257
2258    public void dump(StringBuilder sb) {
2259        sb.append("AVRCP:\n");
2260        ProfileService.println(sb, "mMediaAttributes: " + mMediaAttributes);
2261        ProfileService.println(sb, "mTransportControlFlags: " + mTransportControlFlags);
2262        ProfileService.println(sb, "mTracksPlayed: " + mTracksPlayed);
2263        ProfileService.println(sb, "mCurrentPlayState: " + mCurrentPlayState);
2264        ProfileService.println(sb, "mLastStateUpdate: " + mLastStateUpdate);
2265        ProfileService.println(sb, "mPlayStatusChangedNT: " + mPlayStatusChangedNT);
2266        ProfileService.println(sb, "mTrackChangedNT: " + mTrackChangedNT);
2267        ProfileService.println(sb, "mSongLengthMs: " + mSongLengthMs);
2268        ProfileService.println(sb, "mPlaybackIntervalMs: " + mPlaybackIntervalMs);
2269        ProfileService.println(sb, "mPlayPosChangedNT: " + mPlayPosChangedNT);
2270        ProfileService.println(sb, "mNextPosMs: " + mNextPosMs);
2271        ProfileService.println(sb, "mPrevPosMs: " + mPrevPosMs);
2272        ProfileService.println(sb, "mSkipStartTime: " + mSkipStartTime);
2273        ProfileService.println(sb, "mFeatures: " + mFeatures);
2274        ProfileService.println(sb, "mRemoteVolume: " + mRemoteVolume);
2275        ProfileService.println(sb, "mLastRemoteVolume: " + mLastRemoteVolume);
2276        ProfileService.println(sb, "mLastDirection: " + mLastDirection);
2277        ProfileService.println(sb, "mVolumeStep: " + mVolumeStep);
2278        ProfileService.println(sb, "mAudioStreamMax: " + mAudioStreamMax);
2279        ProfileService.println(sb, "mVolCmdAdjustInProgress: " + mVolCmdAdjustInProgress);
2280        ProfileService.println(sb, "mVolCmdSetInProgress: " + mVolCmdSetInProgress);
2281        ProfileService.println(sb, "mAbsVolRetryTimes: " + mAbsVolRetryTimes);
2282        ProfileService.println(sb, "mSkipAmount: " + mSkipAmount);
2283        ProfileService.println(sb, "mVolumeMapping: " + mVolumeMapping.toString());
2284        if (mMediaController != null)
2285            ProfileService.println(sb, "mMediaSession pkg: " + mMediaController.getPackageName());
2286
2287        ProfileService.println(sb, "\nMedia Players:");
2288        synchronized (mMediaPlayerInfoList) {
2289            for (Map.Entry<Integer, MediaPlayerInfo> entry : mMediaPlayerInfoList.entrySet()) {
2290                int key = entry.getKey();
2291                ProfileService.println(sb, ((mCurrAddrPlayerID == key) ? " *#" : "  #")
2292                                + entry.getKey() + ": " + entry.getValue());
2293            }
2294        }
2295
2296        ProfileService.println(sb, "Passthrough operations: ");
2297        for (MediaKeyLog log : mPassthroughLogs) {
2298            ProfileService.println(sb, "  " + log);
2299        }
2300        for (MediaKeyLog log : mPassthroughPending) {
2301            ProfileService.println(sb, "  " + log);
2302        }
2303    }
2304
2305    public class AvrcpBrowseManager {
2306        Map<String, BrowsedMediaPlayer> connList = new HashMap<String, BrowsedMediaPlayer>();
2307        private AvrcpMediaRspInterface mMediaInterface;
2308        private Context mContext;
2309
2310        public AvrcpBrowseManager(Context context, AvrcpMediaRspInterface mediaInterface) {
2311            mContext = context;
2312            mMediaInterface = mediaInterface;
2313        }
2314
2315        public void cleanup() {
2316            Iterator entries = connList.entrySet().iterator();
2317            while (entries.hasNext()) {
2318                Map.Entry entry = (Map.Entry) entries.next();
2319                BrowsedMediaPlayer browsedMediaPlayer = (BrowsedMediaPlayer) entry.getValue();
2320                if (browsedMediaPlayer != null) {
2321                    browsedMediaPlayer.cleanup();
2322                }
2323            }
2324            // clean up the map
2325            connList.clear();
2326        }
2327
2328        // get the a free media player interface based on the passed bd address
2329        // if the no items is found for the passed media player then it assignes a
2330        // available media player interface
2331        public BrowsedMediaPlayer getBrowsedMediaPlayer(byte[] bdaddr) {
2332            BrowsedMediaPlayer mediaPlayer;
2333            String bdaddrStr = new String(bdaddr);
2334            if (connList.containsKey(bdaddrStr)) {
2335                mediaPlayer = connList.get(bdaddrStr);
2336            } else {
2337                mediaPlayer = new BrowsedMediaPlayer(bdaddr, mContext, mMediaInterface);
2338                connList.put(bdaddrStr, mediaPlayer);
2339            }
2340            return mediaPlayer;
2341        }
2342
2343        // clears the details pertaining to passed bdaddres
2344        public boolean clearBrowsedMediaPlayer(byte[] bdaddr) {
2345            String bdaddrStr = new String(bdaddr);
2346            if (connList.containsKey(bdaddrStr)) {
2347                connList.remove(bdaddrStr);
2348                return true;
2349            }
2350            return false;
2351        }
2352
2353        public Map<String, BrowsedMediaPlayer> getConnList() {
2354            return connList;
2355        }
2356
2357        /* Helper function to convert colon separated bdaddr to byte string */
2358        private byte[] hexStringToByteArray(String s) {
2359            int len = s.length();
2360            byte[] data = new byte[len / 2];
2361            for (int i = 0; i < len; i += 2) {
2362                data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
2363                        + Character.digit(s.charAt(i+1), 16));
2364            }
2365            return data;
2366        }
2367    }
2368
2369    /*
2370     * private class which handles responses from AvrcpMediaManager. Maps responses to native
2371     * responses. This class implements the AvrcpMediaRspInterface interface.
2372     */
2373    private class AvrcpMediaRsp implements AvrcpMediaRspInterface {
2374        private static final String TAG = "AvrcpMediaRsp";
2375
2376        public void setAddrPlayerRsp(byte[] address, int rspStatus) {
2377            if (!setAddressedPlayerRspNative(address, rspStatus)) {
2378                Log.e(TAG, "setAddrPlayerRsp failed!");
2379            }
2380        }
2381
2382        public void setBrowsedPlayerRsp(byte[] address, int rspStatus, byte depth, int numItems,
2383                String[] textArray) {
2384            if (!setBrowsedPlayerRspNative(address, rspStatus, depth, numItems, textArray)) {
2385                Log.e(TAG, "setBrowsedPlayerRsp failed!");
2386            }
2387        }
2388
2389        public void mediaPlayerListRsp(byte[] address, int rspStatus, MediaPlayerListRsp rspObj) {
2390            if (rspObj != null && rspStatus == AvrcpConstants.RSP_NO_ERROR) {
2391                if (!mediaPlayerListRspNative(address, rspStatus, sUIDCounter, rspObj.itemType,
2392                            rspObj.mNumItems, rspObj.mPlayerIds, rspObj.mPlayerTypes,
2393                            rspObj.mPlayerSubTypes, rspObj.mPlayStatusValues,
2394                            rspObj.mFeatureBitMaskValues, rspObj.mPlayerNameList))
2395                    Log.e(TAG, "mediaPlayerListRsp failed!");
2396            } else {
2397                Log.e(TAG, "mediaPlayerListRsp: rspObj is null");
2398                if (!mediaPlayerListRspNative(address, rspStatus, sUIDCounter, (byte) 0x00, 0, null,
2399                            null, null, null, null, null))
2400                    Log.e(TAG, "mediaPlayerListRsp failed!");
2401            }
2402        }
2403
2404        public void folderItemsRsp(byte[] address, int rspStatus, FolderItemsRsp rspObj) {
2405            if (rspObj != null && rspStatus == AvrcpConstants.RSP_NO_ERROR) {
2406                if (!getFolderItemsRspNative(address, rspStatus, sUIDCounter, rspObj.mScope,
2407                        rspObj.mNumItems, rspObj.mFolderTypes, rspObj.mPlayable, rspObj.mItemTypes,
2408                        rspObj.mItemUid, rspObj.mDisplayNames, rspObj.mAttributesNum,
2409                        rspObj.mAttrIds, rspObj.mAttrValues))
2410                    Log.e(TAG, "getFolderItemsRspNative failed!");
2411            } else {
2412                Log.e(TAG, "folderItemsRsp: rspObj is null or rspStatus is error:" + rspStatus);
2413                if (!getFolderItemsRspNative(address, rspStatus, sUIDCounter, (byte) 0x00, 0,
2414                        null, null, null, null, null, null, null, null))
2415                    Log.e(TAG, "getFolderItemsRspNative failed!");
2416            }
2417
2418        }
2419
2420        public void changePathRsp(byte[] address, int rspStatus, int numItems) {
2421            if (!changePathRspNative(address, rspStatus, numItems))
2422                Log.e(TAG, "changePathRspNative failed!");
2423        }
2424
2425        public void getItemAttrRsp(byte[] address, int rspStatus, ItemAttrRsp rspObj) {
2426            if (rspObj != null && rspStatus == AvrcpConstants.RSP_NO_ERROR) {
2427                if (!getItemAttrRspNative(address, rspStatus, rspObj.mNumAttr,
2428                        rspObj.mAttributesIds, rspObj.mAttributesArray))
2429                    Log.e(TAG, "getItemAttrRspNative failed!");
2430            } else {
2431                Log.e(TAG, "getItemAttrRsp: rspObj is null or rspStatus is error:" + rspStatus);
2432                if (!getItemAttrRspNative(address, rspStatus, (byte) 0x00, null, null))
2433                    Log.e(TAG, "getItemAttrRspNative failed!");
2434            }
2435        }
2436
2437        public void playItemRsp(byte[] address, int rspStatus) {
2438            if (!playItemRspNative(address, rspStatus)) {
2439                Log.e(TAG, "playItemRspNative failed!");
2440            }
2441        }
2442
2443        public void getTotalNumOfItemsRsp(byte[] address, int rspStatus, int uidCounter,
2444                int numItems) {
2445            if (!getTotalNumOfItemsRspNative(address, rspStatus, sUIDCounter, numItems)) {
2446                Log.e(TAG, "getTotalNumOfItemsRspNative failed!");
2447            }
2448        }
2449
2450        public void addrPlayerChangedRsp(int type, int playerId, int uidCounter) {
2451            if (!registerNotificationRspAddrPlayerChangedNative(type, playerId, sUIDCounter)) {
2452                Log.e(TAG, "registerNotificationRspAddrPlayerChangedNative failed!");
2453            }
2454        }
2455
2456        public void avalPlayerChangedRsp(byte[] address, int type) {
2457            if (!registerNotificationRspAvalPlayerChangedNative(type)) {
2458                Log.e(TAG, "registerNotificationRspAvalPlayerChangedNative failed!");
2459            }
2460        }
2461
2462        public void uidsChangedRsp(byte[] address, int type, int uidCounter) {
2463            if (!registerNotificationRspUIDsChangedNative(type, sUIDCounter)) {
2464                Log.e(TAG, "registerNotificationRspUIDsChangedNative failed!");
2465            }
2466        }
2467
2468        public void nowPlayingChangedRsp(int type) {
2469            if (!registerNotificationRspNowPlayingChangedNative(type)) {
2470                Log.e(TAG, "registerNotificationRspNowPlayingChangedNative failed!");
2471            }
2472        }
2473
2474        public void trackChangedRsp(int type, byte[] uid) {
2475            if (!registerNotificationRspTrackChangeNative(type, uid)) {
2476                Log.e(TAG, "registerNotificationRspTrackChangeNative failed!");
2477            }
2478        }
2479    }
2480
2481    /* getters for some private variables */
2482    public AvrcpBrowseManager getAvrcpBrowseManager() {
2483        return mAvrcpBrowseManager;
2484    }
2485
2486    /* PASSTHROUGH COMMAND MANAGEMENT */
2487
2488    void handlePassthroughCmd(int op, int state) {
2489        int code = avrcpPassthroughToKeyCode(op);
2490        if (code == KeyEvent.KEYCODE_UNKNOWN) {
2491            Log.w(TAG, "Ignoring passthrough of unknown key " + op + " state " + state);
2492            return;
2493        }
2494        int action = KeyEvent.ACTION_DOWN;
2495        if (state == AvrcpConstants.KEY_STATE_RELEASE) action = KeyEvent.ACTION_UP;
2496        KeyEvent event = new KeyEvent(action, code);
2497        if (!KeyEvent.isMediaKey(code)) {
2498            Log.w(TAG, "Passthrough non-media key " + op + " (code " + code + ") state " + state);
2499        }
2500        mMediaSessionManager.dispatchMediaKeyEvent(event);
2501        addKeyPending(event);
2502    }
2503
2504    private int avrcpPassthroughToKeyCode(int operation) {
2505        switch (operation) {
2506            case BluetoothAvrcp.PASSTHROUGH_ID_UP:
2507                return KeyEvent.KEYCODE_DPAD_UP;
2508            case BluetoothAvrcp.PASSTHROUGH_ID_DOWN:
2509                return KeyEvent.KEYCODE_DPAD_DOWN;
2510            case BluetoothAvrcp.PASSTHROUGH_ID_LEFT:
2511                return KeyEvent.KEYCODE_DPAD_LEFT;
2512            case BluetoothAvrcp.PASSTHROUGH_ID_RIGHT:
2513                return KeyEvent.KEYCODE_DPAD_RIGHT;
2514            case BluetoothAvrcp.PASSTHROUGH_ID_RIGHT_UP:
2515                return KeyEvent.KEYCODE_DPAD_UP_RIGHT;
2516            case BluetoothAvrcp.PASSTHROUGH_ID_RIGHT_DOWN:
2517                return KeyEvent.KEYCODE_DPAD_DOWN_RIGHT;
2518            case BluetoothAvrcp.PASSTHROUGH_ID_LEFT_UP:
2519                return KeyEvent.KEYCODE_DPAD_UP_LEFT;
2520            case BluetoothAvrcp.PASSTHROUGH_ID_LEFT_DOWN:
2521                return KeyEvent.KEYCODE_DPAD_DOWN_LEFT;
2522            case BluetoothAvrcp.PASSTHROUGH_ID_0:
2523                return KeyEvent.KEYCODE_NUMPAD_0;
2524            case BluetoothAvrcp.PASSTHROUGH_ID_1:
2525                return KeyEvent.KEYCODE_NUMPAD_1;
2526            case BluetoothAvrcp.PASSTHROUGH_ID_2:
2527                return KeyEvent.KEYCODE_NUMPAD_2;
2528            case BluetoothAvrcp.PASSTHROUGH_ID_3:
2529                return KeyEvent.KEYCODE_NUMPAD_3;
2530            case BluetoothAvrcp.PASSTHROUGH_ID_4:
2531                return KeyEvent.KEYCODE_NUMPAD_4;
2532            case BluetoothAvrcp.PASSTHROUGH_ID_5:
2533                return KeyEvent.KEYCODE_NUMPAD_5;
2534            case BluetoothAvrcp.PASSTHROUGH_ID_6:
2535                return KeyEvent.KEYCODE_NUMPAD_6;
2536            case BluetoothAvrcp.PASSTHROUGH_ID_7:
2537                return KeyEvent.KEYCODE_NUMPAD_7;
2538            case BluetoothAvrcp.PASSTHROUGH_ID_8:
2539                return KeyEvent.KEYCODE_NUMPAD_8;
2540            case BluetoothAvrcp.PASSTHROUGH_ID_9:
2541                return KeyEvent.KEYCODE_NUMPAD_9;
2542            case BluetoothAvrcp.PASSTHROUGH_ID_DOT:
2543                return KeyEvent.KEYCODE_NUMPAD_DOT;
2544            case BluetoothAvrcp.PASSTHROUGH_ID_ENTER:
2545                return KeyEvent.KEYCODE_NUMPAD_ENTER;
2546            case BluetoothAvrcp.PASSTHROUGH_ID_CLEAR:
2547                return KeyEvent.KEYCODE_CLEAR;
2548            case BluetoothAvrcp.PASSTHROUGH_ID_CHAN_UP:
2549                return KeyEvent.KEYCODE_CHANNEL_UP;
2550            case BluetoothAvrcp.PASSTHROUGH_ID_CHAN_DOWN:
2551                return KeyEvent.KEYCODE_CHANNEL_DOWN;
2552            case BluetoothAvrcp.PASSTHROUGH_ID_PREV_CHAN:
2553                return KeyEvent.KEYCODE_LAST_CHANNEL;
2554            case BluetoothAvrcp.PASSTHROUGH_ID_INPUT_SEL:
2555                return KeyEvent.KEYCODE_TV_INPUT;
2556            case BluetoothAvrcp.PASSTHROUGH_ID_DISP_INFO:
2557                return KeyEvent.KEYCODE_INFO;
2558            case BluetoothAvrcp.PASSTHROUGH_ID_HELP:
2559                return KeyEvent.KEYCODE_HELP;
2560            case BluetoothAvrcp.PASSTHROUGH_ID_PAGE_UP:
2561                return KeyEvent.KEYCODE_PAGE_UP;
2562            case BluetoothAvrcp.PASSTHROUGH_ID_PAGE_DOWN:
2563                return KeyEvent.KEYCODE_PAGE_DOWN;
2564            case BluetoothAvrcp.PASSTHROUGH_ID_POWER:
2565                return KeyEvent.KEYCODE_POWER;
2566            case BluetoothAvrcp.PASSTHROUGH_ID_VOL_UP:
2567                return KeyEvent.KEYCODE_VOLUME_UP;
2568            case BluetoothAvrcp.PASSTHROUGH_ID_VOL_DOWN:
2569                return KeyEvent.KEYCODE_VOLUME_DOWN;
2570            case BluetoothAvrcp.PASSTHROUGH_ID_MUTE:
2571                return KeyEvent.KEYCODE_MUTE;
2572            case BluetoothAvrcp.PASSTHROUGH_ID_PLAY:
2573                return KeyEvent.KEYCODE_MEDIA_PLAY;
2574            case BluetoothAvrcp.PASSTHROUGH_ID_STOP:
2575                return KeyEvent.KEYCODE_MEDIA_STOP;
2576            case BluetoothAvrcp.PASSTHROUGH_ID_PAUSE:
2577                return KeyEvent.KEYCODE_MEDIA_PAUSE;
2578            case BluetoothAvrcp.PASSTHROUGH_ID_RECORD:
2579                return KeyEvent.KEYCODE_MEDIA_RECORD;
2580            case BluetoothAvrcp.PASSTHROUGH_ID_REWIND:
2581                return KeyEvent.KEYCODE_MEDIA_REWIND;
2582            case BluetoothAvrcp.PASSTHROUGH_ID_FAST_FOR:
2583                return KeyEvent.KEYCODE_MEDIA_FAST_FORWARD;
2584            case BluetoothAvrcp.PASSTHROUGH_ID_EJECT:
2585                return KeyEvent.KEYCODE_MEDIA_EJECT;
2586            case BluetoothAvrcp.PASSTHROUGH_ID_FORWARD:
2587                return KeyEvent.KEYCODE_MEDIA_NEXT;
2588            case BluetoothAvrcp.PASSTHROUGH_ID_BACKWARD:
2589                return KeyEvent.KEYCODE_MEDIA_PREVIOUS;
2590            case BluetoothAvrcp.PASSTHROUGH_ID_F1:
2591                return KeyEvent.KEYCODE_F1;
2592            case BluetoothAvrcp.PASSTHROUGH_ID_F2:
2593                return KeyEvent.KEYCODE_F2;
2594            case BluetoothAvrcp.PASSTHROUGH_ID_F3:
2595                return KeyEvent.KEYCODE_F3;
2596            case BluetoothAvrcp.PASSTHROUGH_ID_F4:
2597                return KeyEvent.KEYCODE_F4;
2598            case BluetoothAvrcp.PASSTHROUGH_ID_F5:
2599                return KeyEvent.KEYCODE_F5;
2600            // Fallthrough for all unknown key mappings
2601            case BluetoothAvrcp.PASSTHROUGH_ID_SELECT:
2602            case BluetoothAvrcp.PASSTHROUGH_ID_ROOT_MENU:
2603            case BluetoothAvrcp.PASSTHROUGH_ID_SETUP_MENU:
2604            case BluetoothAvrcp.PASSTHROUGH_ID_CONT_MENU:
2605            case BluetoothAvrcp.PASSTHROUGH_ID_FAV_MENU:
2606            case BluetoothAvrcp.PASSTHROUGH_ID_EXIT:
2607            case BluetoothAvrcp.PASSTHROUGH_ID_SOUND_SEL:
2608            case BluetoothAvrcp.PASSTHROUGH_ID_ANGLE:
2609            case BluetoothAvrcp.PASSTHROUGH_ID_SUBPICT:
2610            case BluetoothAvrcp.PASSTHROUGH_ID_VENDOR:
2611            default:
2612                return KeyEvent.KEYCODE_UNKNOWN;
2613        }
2614    }
2615
2616    private void addKeyPending(KeyEvent event) {
2617        synchronized (mPassthroughPending) {
2618            mPassthroughPending.add(new MediaKeyLog(System.currentTimeMillis(), event));
2619        }
2620    }
2621
2622    private void recordKeyDispatched(KeyEvent event, String packageName) {
2623        long time = System.currentTimeMillis();
2624        Log.v(TAG, "recordKeyDispatched: " + event + " dispatched to " + packageName);
2625        synchronized (mPassthroughPending) {
2626            Iterator<MediaKeyLog> pending = mPassthroughPending.iterator();
2627            while (pending.hasNext()) {
2628                MediaKeyLog log = pending.next();
2629                if (log.addDispatch(time, event, packageName)) {
2630                    mPassthroughDispatched++;
2631                    mPassthroughLogs.add(log);
2632                    pending.remove();
2633                    return;
2634                }
2635            }
2636        }
2637    }
2638
2639    private final MediaSessionManager.Callback mButtonDispatchCallback =
2640            new MediaSessionManager.Callback() {
2641                @Override
2642                public void onMediaKeyEventDispatched(KeyEvent event, MediaSession.Token token) {
2643                    // Get the package name
2644                    android.media.session.MediaController controller =
2645                            new android.media.session.MediaController(mContext, token);
2646                    String targetPackage = controller.getPackageName();
2647                    recordKeyDispatched(event, targetPackage);
2648                }
2649
2650                @Override
2651                public void onMediaKeyEventDispatched(KeyEvent event, ComponentName receiver) {
2652                    recordKeyDispatched(event, receiver.getPackageName());
2653                }
2654
2655                @Override
2656                public void onAddressedPlayerChanged(MediaSession.Token token) {
2657                    setActiveMediaSession(token);
2658                }
2659
2660                @Override
2661                public void onAddressedPlayerChanged(ComponentName receiver) {
2662                    // We only get this if there isn't an active media session.
2663                    // We can still get a passthrough.
2664                    setAddressedMediaSessionPackage(receiver.getPackageName());
2665                }
2666            };
2667
2668    // Do not modify without updating the HAL bt_rc.h files.
2669
2670    // match up with btrc_play_status_t enum of bt_rc.h
2671    final static int PLAYSTATUS_STOPPED = 0;
2672    final static int PLAYSTATUS_PLAYING = 1;
2673    final static int PLAYSTATUS_PAUSED = 2;
2674    final static int PLAYSTATUS_FWD_SEEK = 3;
2675    final static int PLAYSTATUS_REV_SEEK = 4;
2676    final static int PLAYSTATUS_ERROR = 255;
2677
2678    // match up with btrc_media_attr_t enum of bt_rc.h
2679    final static int MEDIA_ATTR_TITLE = 1;
2680    final static int MEDIA_ATTR_ARTIST = 2;
2681    final static int MEDIA_ATTR_ALBUM = 3;
2682    final static int MEDIA_ATTR_TRACK_NUM = 4;
2683    final static int MEDIA_ATTR_NUM_TRACKS = 5;
2684    final static int MEDIA_ATTR_GENRE = 6;
2685    final static int MEDIA_ATTR_PLAYING_TIME = 7;
2686
2687    // match up with btrc_event_id_t enum of bt_rc.h
2688    final static int EVT_PLAY_STATUS_CHANGED = 1;
2689    final static int EVT_TRACK_CHANGED = 2;
2690    final static int EVT_TRACK_REACHED_END = 3;
2691    final static int EVT_TRACK_REACHED_START = 4;
2692    final static int EVT_PLAY_POS_CHANGED = 5;
2693    final static int EVT_BATT_STATUS_CHANGED = 6;
2694    final static int EVT_SYSTEM_STATUS_CHANGED = 7;
2695    final static int EVT_APP_SETTINGS_CHANGED = 8;
2696    final static int EVENT_NOW_PLAYING_CONTENT_CHANGED = 9;
2697    final static int EVT_AVBL_PLAYERS_CHANGED = 0xa;
2698    final static int EVT_ADDR_PLAYER_CHANGED = 0xb;
2699    final static int EVENT_UIDS_CHANGED = 0x0c;
2700
2701    private native static void classInitNative();
2702    private native void initNative();
2703    private native void cleanupNative();
2704    private native boolean getPlayStatusRspNative(byte[] address, int playStatus, int songLen,
2705            int songPos);
2706    private native boolean getElementAttrRspNative(byte[] address, byte numAttr, int[] attrIds,
2707            String[] textArray);
2708    private native boolean registerNotificationRspPlayStatusNative(int type, int playStatus);
2709    private native boolean registerNotificationRspTrackChangeNative(int type, byte[] track);
2710    private native boolean registerNotificationRspPlayPosNative(int type, int playPos);
2711    private native boolean setVolumeNative(int volume);
2712    private native boolean sendPassThroughCommandNative(int keyCode, int keyState);
2713    private native boolean setAddressedPlayerRspNative(byte[] address, int rspStatus);
2714    private native boolean setBrowsedPlayerRspNative(byte[] address, int rspStatus, byte depth,
2715            int numItems, String[] textArray);
2716    private native boolean mediaPlayerListRspNative(byte[] address, int rsStatus, int uidCounter,
2717            byte item_type, int numItems, int[] playerIds, byte[] playerTypes, int[] playerSubTypes,
2718            byte[] playStatusValues, short[] featureBitMaskValues, String[] textArray);
2719    private native boolean getFolderItemsRspNative(byte[] address, int rspStatus, short uidCounter,
2720            byte scope, int numItems, byte[] folderTypes, byte[] playable, byte[] itemTypes,
2721            byte[] itemUidArray, String[] textArray, int[] AttributesNum, int[] AttributesIds,
2722            String[] attributesArray);
2723    private native boolean changePathRspNative(byte[] address, int rspStatus, int numItems);
2724    private native boolean getItemAttrRspNative(byte[] address, int rspStatus, byte numAttr,
2725            int[] attrIds, String[] textArray);
2726    private native boolean playItemRspNative(byte[] address, int rspStatus);
2727    private native boolean getTotalNumOfItemsRspNative(byte[] address, int rspStatus,
2728            int uidCounter, int numItems);
2729    private native boolean searchRspNative(byte[] address, int rspStatus, int uidCounter,
2730            int numItems);
2731    private native boolean addToNowPlayingRspNative(byte[] address, int rspStatus);
2732    private native boolean registerNotificationRspAddrPlayerChangedNative(int type,
2733        int playerId, int uidCounter);
2734    private native boolean registerNotificationRspAvalPlayerChangedNative(int type);
2735    private native boolean registerNotificationRspUIDsChangedNative(int type, int uidCounter);
2736    private native boolean registerNotificationRspNowPlayingChangedNative(int type);
2737
2738}
2739