John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package com.android.systemui.volume; |
| 18 | |
| 19 | import android.app.PendingIntent; |
| 20 | import android.content.Context; |
| 21 | import android.content.Intent; |
| 22 | import android.content.pm.ApplicationInfo; |
| 23 | import android.content.pm.PackageManager; |
| 24 | import android.content.pm.PackageManager.NameNotFoundException; |
| 25 | import android.content.pm.ResolveInfo; |
| 26 | import android.media.IRemoteVolumeController; |
| 27 | import android.media.MediaMetadata; |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 28 | import android.media.session.MediaController; |
| 29 | import android.media.session.MediaController.PlaybackInfo; |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 30 | import android.media.session.MediaSession; |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 31 | import android.media.session.MediaSession.QueueItem; |
| 32 | import android.media.session.MediaSession.Token; |
| 33 | import android.media.session.MediaSessionManager; |
| 34 | import android.media.session.MediaSessionManager.OnActiveSessionsChangedListener; |
| 35 | import android.media.session.PlaybackState; |
| 36 | import android.os.Bundle; |
| 37 | import android.os.Handler; |
| 38 | import android.os.Looper; |
| 39 | import android.os.Message; |
| 40 | import android.os.RemoteException; |
| 41 | import android.util.Log; |
| 42 | |
| 43 | import java.io.PrintWriter; |
| 44 | import java.io.StringWriter; |
| 45 | import java.util.HashMap; |
| 46 | import java.util.HashSet; |
| 47 | import java.util.List; |
| 48 | import java.util.Map; |
| 49 | import java.util.Objects; |
| 50 | import java.util.Set; |
| 51 | |
| 52 | /** |
| 53 | * Convenience client for all media session updates. Provides a callback interface for events |
| 54 | * related to remote media sessions. |
| 55 | */ |
| 56 | public class MediaSessions { |
| 57 | private static final String TAG = Util.logTag(MediaSessions.class); |
| 58 | |
| 59 | private static final boolean USE_SERVICE_LABEL = false; |
| 60 | |
| 61 | private final Context mContext; |
| 62 | private final H mHandler; |
| 63 | private final MediaSessionManager mMgr; |
| 64 | private final Map<Token, MediaControllerRecord> mRecords = new HashMap<>(); |
| 65 | private final Callbacks mCallbacks; |
| 66 | |
| 67 | private boolean mInit; |
| 68 | |
| 69 | public MediaSessions(Context context, Looper looper, Callbacks callbacks) { |
| 70 | mContext = context; |
| 71 | mHandler = new H(looper); |
| 72 | mMgr = (MediaSessionManager) context.getSystemService(Context.MEDIA_SESSION_SERVICE); |
| 73 | mCallbacks = callbacks; |
| 74 | } |
| 75 | |
| 76 | public void dump(PrintWriter writer) { |
| 77 | writer.println(getClass().getSimpleName() + " state:"); |
| 78 | writer.print(" mInit: "); writer.println(mInit); |
| 79 | writer.print(" mRecords.size: "); writer.println(mRecords.size()); |
| 80 | int i = 0; |
| 81 | for (MediaControllerRecord r : mRecords.values()) { |
| 82 | dump(++i, writer, r.controller); |
| 83 | } |
| 84 | } |
| 85 | |
| 86 | public void init() { |
| 87 | if (D.BUG) Log.d(TAG, "init"); |
| 88 | // will throw if no permission |
| 89 | mMgr.addOnActiveSessionsChangedListener(mSessionsListener, null, mHandler); |
| 90 | mInit = true; |
| 91 | postUpdateSessions(); |
| 92 | mMgr.setRemoteVolumeController(mRvc); |
| 93 | } |
| 94 | |
| 95 | protected void postUpdateSessions() { |
| 96 | if (!mInit) return; |
| 97 | mHandler.sendEmptyMessage(H.UPDATE_SESSIONS); |
| 98 | } |
| 99 | |
| 100 | public void destroy() { |
| 101 | if (D.BUG) Log.d(TAG, "destroy"); |
| 102 | mInit = false; |
| 103 | mMgr.removeOnActiveSessionsChangedListener(mSessionsListener); |
| 104 | } |
| 105 | |
| 106 | public void setVolume(Token token, int level) { |
| 107 | final MediaControllerRecord r = mRecords.get(token); |
| 108 | if (r == null) { |
| 109 | Log.w(TAG, "setVolume: No record found for token " + token); |
| 110 | return; |
| 111 | } |
| 112 | if (D.BUG) Log.d(TAG, "Setting level to " + level); |
| 113 | r.controller.setVolumeTo(level, 0); |
| 114 | } |
| 115 | |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 116 | private void onRemoteVolumeChangedH(MediaSession.Token sessionToken, int flags) { |
| 117 | final MediaController controller = new MediaController(mContext, sessionToken); |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 118 | if (D.BUG) Log.d(TAG, "remoteVolumeChangedH " + controller.getPackageName() + " " |
| 119 | + Util.audioManagerFlagsToString(flags)); |
| 120 | final Token token = controller.getSessionToken(); |
| 121 | mCallbacks.onRemoteVolumeChanged(token, flags); |
| 122 | } |
| 123 | |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 124 | private void onUpdateRemoteControllerH(MediaSession.Token sessionToken) { |
| 125 | final MediaController controller = |
| 126 | sessionToken != null ? new MediaController(mContext, sessionToken) : null; |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 127 | final String pkg = controller != null ? controller.getPackageName() : null; |
| 128 | if (D.BUG) Log.d(TAG, "updateRemoteControllerH " + pkg); |
| 129 | // this may be our only indication that a remote session is changed, refresh |
| 130 | postUpdateSessions(); |
| 131 | } |
| 132 | |
| 133 | protected void onActiveSessionsUpdatedH(List<MediaController> controllers) { |
| 134 | if (D.BUG) Log.d(TAG, "onActiveSessionsUpdatedH n=" + controllers.size()); |
| 135 | final Set<Token> toRemove = new HashSet<Token>(mRecords.keySet()); |
| 136 | for (MediaController controller : controllers) { |
| 137 | final Token token = controller.getSessionToken(); |
| 138 | final PlaybackInfo pi = controller.getPlaybackInfo(); |
| 139 | toRemove.remove(token); |
| 140 | if (!mRecords.containsKey(token)) { |
| 141 | final MediaControllerRecord r = new MediaControllerRecord(controller); |
| 142 | r.name = getControllerName(controller); |
| 143 | mRecords.put(token, r); |
| 144 | controller.registerCallback(r, mHandler); |
| 145 | } |
| 146 | final MediaControllerRecord r = mRecords.get(token); |
| 147 | final boolean remote = isRemote(pi); |
| 148 | if (remote) { |
| 149 | updateRemoteH(token, r.name, pi); |
| 150 | r.sentRemote = true; |
| 151 | } |
| 152 | } |
| 153 | for (Token t : toRemove) { |
| 154 | final MediaControllerRecord r = mRecords.get(t); |
| 155 | r.controller.unregisterCallback(r); |
| 156 | mRecords.remove(t); |
| 157 | if (D.BUG) Log.d(TAG, "Removing " + r.name + " sentRemote=" + r.sentRemote); |
| 158 | if (r.sentRemote) { |
| 159 | mCallbacks.onRemoteRemoved(t); |
| 160 | r.sentRemote = false; |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | private static boolean isRemote(PlaybackInfo pi) { |
| 166 | return pi != null && pi.getPlaybackType() == PlaybackInfo.PLAYBACK_TYPE_REMOTE; |
| 167 | } |
| 168 | |
| 169 | protected String getControllerName(MediaController controller) { |
| 170 | final PackageManager pm = mContext.getPackageManager(); |
| 171 | final String pkg = controller.getPackageName(); |
| 172 | try { |
| 173 | if (USE_SERVICE_LABEL) { |
| 174 | final List<ResolveInfo> ris = pm.queryIntentServices( |
| 175 | new Intent("android.media.MediaRouteProviderService").setPackage(pkg), 0); |
| 176 | if (ris != null) { |
| 177 | for (ResolveInfo ri : ris) { |
| 178 | if (ri.serviceInfo == null) continue; |
| 179 | if (pkg.equals(ri.serviceInfo.packageName)) { |
| 180 | final String serviceLabel = |
| 181 | Objects.toString(ri.serviceInfo.loadLabel(pm), "").trim(); |
| 182 | if (serviceLabel.length() > 0) { |
| 183 | return serviceLabel; |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | } |
| 189 | final ApplicationInfo ai = pm.getApplicationInfo(pkg, 0); |
| 190 | final String appLabel = Objects.toString(ai.loadLabel(pm), "").trim(); |
| 191 | if (appLabel.length() > 0) { |
| 192 | return appLabel; |
| 193 | } |
| 194 | } catch (NameNotFoundException e) { } |
| 195 | return pkg; |
| 196 | } |
| 197 | |
| 198 | private void updateRemoteH(Token token, String name, PlaybackInfo pi) { |
| 199 | if (mCallbacks != null) { |
| 200 | mCallbacks.onRemoteUpdate(token, name, pi); |
| 201 | } |
| 202 | } |
| 203 | |
| 204 | private static void dump(int n, PrintWriter writer, MediaController c) { |
| 205 | writer.println(" Controller " + n + ": " + c.getPackageName()); |
| 206 | final Bundle extras = c.getExtras(); |
| 207 | final long flags = c.getFlags(); |
| 208 | final MediaMetadata mm = c.getMetadata(); |
| 209 | final PlaybackInfo pi = c.getPlaybackInfo(); |
| 210 | final PlaybackState playbackState = c.getPlaybackState(); |
| 211 | final List<QueueItem> queue = c.getQueue(); |
| 212 | final CharSequence queueTitle = c.getQueueTitle(); |
| 213 | final int ratingType = c.getRatingType(); |
| 214 | final PendingIntent sessionActivity = c.getSessionActivity(); |
| 215 | |
| 216 | writer.println(" PlaybackState: " + Util.playbackStateToString(playbackState)); |
| 217 | writer.println(" PlaybackInfo: " + Util.playbackInfoToString(pi)); |
| 218 | if (mm != null) { |
| 219 | writer.println(" MediaMetadata.desc=" + mm.getDescription()); |
| 220 | } |
| 221 | writer.println(" RatingType: " + ratingType); |
| 222 | writer.println(" Flags: " + flags); |
| 223 | if (extras != null) { |
| 224 | writer.println(" Extras:"); |
| 225 | for (String key : extras.keySet()) { |
| 226 | writer.println(" " + key + "=" + extras.get(key)); |
| 227 | } |
| 228 | } |
| 229 | if (queueTitle != null) { |
| 230 | writer.println(" QueueTitle: " + queueTitle); |
| 231 | } |
| 232 | if (queue != null && !queue.isEmpty()) { |
| 233 | writer.println(" Queue:"); |
| 234 | for (QueueItem qi : queue) { |
| 235 | writer.println(" " + qi); |
| 236 | } |
| 237 | } |
| 238 | if (pi != null) { |
| 239 | writer.println(" sessionActivity: " + sessionActivity); |
| 240 | } |
| 241 | } |
| 242 | |
| 243 | public static void dumpMediaSessions(Context context) { |
| 244 | final MediaSessionManager mgr = (MediaSessionManager) context |
| 245 | .getSystemService(Context.MEDIA_SESSION_SERVICE); |
| 246 | try { |
| 247 | final List<MediaController> controllers = mgr.getActiveSessions(null); |
| 248 | final int N = controllers.size(); |
| 249 | if (D.BUG) Log.d(TAG, N + " controllers"); |
| 250 | for (int i = 0; i < N; i++) { |
| 251 | final StringWriter sw = new StringWriter(); |
| 252 | final PrintWriter pw = new PrintWriter(sw, true); |
| 253 | dump(i + 1, pw, controllers.get(i)); |
| 254 | if (D.BUG) Log.d(TAG, sw.toString()); |
| 255 | } |
| 256 | } catch (SecurityException e) { |
| 257 | Log.w(TAG, "Not allowed to get sessions", e); |
| 258 | } |
| 259 | } |
| 260 | |
| 261 | private final class MediaControllerRecord extends MediaController.Callback { |
| 262 | private final MediaController controller; |
| 263 | |
| 264 | private boolean sentRemote; |
| 265 | private String name; |
| 266 | |
| 267 | private MediaControllerRecord(MediaController controller) { |
| 268 | this.controller = controller; |
| 269 | } |
| 270 | |
| 271 | private String cb(String method) { |
| 272 | return method + " " + controller.getPackageName() + " "; |
| 273 | } |
| 274 | |
| 275 | @Override |
| 276 | public void onAudioInfoChanged(PlaybackInfo info) { |
| 277 | if (D.BUG) Log.d(TAG, cb("onAudioInfoChanged") + Util.playbackInfoToString(info) |
| 278 | + " sentRemote=" + sentRemote); |
| 279 | final boolean remote = isRemote(info); |
| 280 | if (!remote && sentRemote) { |
| 281 | mCallbacks.onRemoteRemoved(controller.getSessionToken()); |
| 282 | sentRemote = false; |
| 283 | } else if (remote) { |
| 284 | updateRemoteH(controller.getSessionToken(), name, info); |
| 285 | sentRemote = true; |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | @Override |
| 290 | public void onExtrasChanged(Bundle extras) { |
| 291 | if (D.BUG) Log.d(TAG, cb("onExtrasChanged") + extras); |
| 292 | } |
| 293 | |
| 294 | @Override |
| 295 | public void onMetadataChanged(MediaMetadata metadata) { |
| 296 | if (D.BUG) Log.d(TAG, cb("onMetadataChanged") + Util.mediaMetadataToString(metadata)); |
| 297 | } |
| 298 | |
| 299 | @Override |
| 300 | public void onPlaybackStateChanged(PlaybackState state) { |
| 301 | if (D.BUG) Log.d(TAG, cb("onPlaybackStateChanged") + Util.playbackStateToString(state)); |
| 302 | } |
| 303 | |
| 304 | @Override |
| 305 | public void onQueueChanged(List<QueueItem> queue) { |
| 306 | if (D.BUG) Log.d(TAG, cb("onQueueChanged") + queue); |
| 307 | } |
| 308 | |
| 309 | @Override |
| 310 | public void onQueueTitleChanged(CharSequence title) { |
| 311 | if (D.BUG) Log.d(TAG, cb("onQueueTitleChanged") + title); |
| 312 | } |
| 313 | |
| 314 | @Override |
| 315 | public void onSessionDestroyed() { |
| 316 | if (D.BUG) Log.d(TAG, cb("onSessionDestroyed")); |
| 317 | } |
| 318 | |
| 319 | @Override |
| 320 | public void onSessionEvent(String event, Bundle extras) { |
| 321 | if (D.BUG) Log.d(TAG, cb("onSessionEvent") + "event=" + event + " extras=" + extras); |
| 322 | } |
| 323 | } |
| 324 | |
| 325 | private final OnActiveSessionsChangedListener mSessionsListener = |
| 326 | new OnActiveSessionsChangedListener() { |
| 327 | @Override |
| 328 | public void onActiveSessionsChanged(List<MediaController> controllers) { |
| 329 | onActiveSessionsUpdatedH(controllers); |
| 330 | } |
| 331 | }; |
| 332 | |
| 333 | private final IRemoteVolumeController mRvc = new IRemoteVolumeController.Stub() { |
| 334 | @Override |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 335 | public void remoteVolumeChanged(MediaSession.Token sessionToken, int flags) |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 336 | throws RemoteException { |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 337 | mHandler.obtainMessage(H.REMOTE_VOLUME_CHANGED, flags, 0, |
| 338 | sessionToken).sendToTarget(); |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 339 | } |
| 340 | |
| 341 | @Override |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 342 | public void updateRemoteController(final MediaSession.Token sessionToken) |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 343 | throws RemoteException { |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 344 | mHandler.obtainMessage(H.UPDATE_REMOTE_CONTROLLER, sessionToken).sendToTarget(); |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 345 | } |
| 346 | }; |
| 347 | |
| 348 | private final class H extends Handler { |
| 349 | private static final int UPDATE_SESSIONS = 1; |
| 350 | private static final int REMOTE_VOLUME_CHANGED = 2; |
| 351 | private static final int UPDATE_REMOTE_CONTROLLER = 3; |
| 352 | |
| 353 | private H(Looper looper) { |
| 354 | super(looper); |
| 355 | } |
| 356 | |
| 357 | @Override |
| 358 | public void handleMessage(Message msg) { |
| 359 | switch (msg.what) { |
| 360 | case UPDATE_SESSIONS: |
| 361 | onActiveSessionsUpdatedH(mMgr.getActiveSessions(null)); |
| 362 | break; |
| 363 | case REMOTE_VOLUME_CHANGED: |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 364 | onRemoteVolumeChangedH((MediaSession.Token) msg.obj, msg.arg1); |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 365 | break; |
| 366 | case UPDATE_REMOTE_CONTROLLER: |
Sungsoo Lim | af7d46c | 2019-01-20 10:45:54 +0900 | [diff] [blame] | 367 | onUpdateRemoteControllerH((MediaSession.Token) msg.obj); |
John Spurlock | f88d808 | 2015-03-25 18:09:51 -0400 | [diff] [blame] | 368 | break; |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | |
| 373 | public interface Callbacks { |
| 374 | void onRemoteUpdate(Token token, String name, PlaybackInfo pi); |
| 375 | void onRemoteRemoved(Token t); |
| 376 | void onRemoteVolumeChanged(Token token, int flags); |
| 377 | } |
| 378 | |
| 379 | } |