TvInputManagerService.java revision bd23fa0ba1460a8d5194fd7c700030bf9c3f6fcb
1/* 2 * Copyright (C) 2014 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.server.tv; 18 19import android.app.ActivityManager; 20import android.content.BroadcastReceiver; 21import android.content.ComponentName; 22import android.content.ContentResolver; 23import android.content.ContentUris; 24import android.content.ContentValues; 25import android.content.Context; 26import android.content.Intent; 27import android.content.IntentFilter; 28import android.content.ServiceConnection; 29import android.content.pm.PackageManager; 30import android.content.pm.ResolveInfo; 31import android.content.pm.ServiceInfo; 32import android.database.Cursor; 33import android.graphics.Rect; 34import android.media.tv.ITvInputClient; 35import android.media.tv.ITvInputHardware; 36import android.media.tv.ITvInputHardwareCallback; 37import android.media.tv.ITvInputManager; 38import android.media.tv.ITvInputService; 39import android.media.tv.ITvInputServiceCallback; 40import android.media.tv.ITvInputSession; 41import android.media.tv.ITvInputSessionCallback; 42import android.media.tv.TvContract; 43import android.media.tv.TvInputHardwareInfo; 44import android.media.tv.TvInputInfo; 45import android.media.tv.TvInputService; 46import android.net.Uri; 47import android.os.Binder; 48import android.os.Bundle; 49import android.os.Handler; 50import android.os.IBinder; 51import android.os.Looper; 52import android.os.Message; 53import android.os.Process; 54import android.os.RemoteException; 55import android.os.UserHandle; 56import android.util.Slog; 57import android.util.SparseArray; 58import android.view.InputChannel; 59import android.view.Surface; 60 61import com.android.internal.content.PackageMonitor; 62import com.android.internal.os.SomeArgs; 63import com.android.server.IoThread; 64import com.android.server.SystemService; 65 66import java.util.ArrayList; 67import java.util.HashMap; 68import java.util.List; 69import java.util.Map; 70 71/** This class provides a system service that manages television inputs. */ 72public final class TvInputManagerService extends SystemService { 73 // STOPSHIP: Turn debugging off. 74 private static final boolean DEBUG = true; 75 private static final String TAG = "TvInputManagerService"; 76 77 private final Context mContext; 78 private final TvInputHardwareManager mTvInputHardwareManager; 79 80 private final ContentResolver mContentResolver; 81 82 // A global lock. 83 private final Object mLock = new Object(); 84 85 // ID of the current user. 86 private int mCurrentUserId = UserHandle.USER_OWNER; 87 88 // A map from user id to UserState. 89 private final SparseArray<UserState> mUserStates = new SparseArray<UserState>(); 90 91 private final Handler mLogHandler; 92 93 public TvInputManagerService(Context context) { 94 super(context); 95 96 mContext = context; 97 mContentResolver = context.getContentResolver(); 98 mLogHandler = new LogHandler(IoThread.get().getLooper()); 99 100 mTvInputHardwareManager = new TvInputHardwareManager(context); 101 registerBroadcastReceivers(); 102 103 synchronized (mLock) { 104 mUserStates.put(mCurrentUserId, new UserState()); 105 buildTvInputListLocked(mCurrentUserId); 106 } 107 } 108 109 @Override 110 public void onStart() { 111 publishBinderService(Context.TV_INPUT_SERVICE, new BinderService()); 112 } 113 114 private void registerBroadcastReceivers() { 115 PackageMonitor monitor = new PackageMonitor() { 116 @Override 117 public void onSomePackagesChanged() { 118 synchronized (mLock) { 119 buildTvInputListLocked(mCurrentUserId); 120 } 121 } 122 }; 123 monitor.register(mContext, null, UserHandle.ALL, true); 124 125 IntentFilter intentFilter = new IntentFilter(); 126 intentFilter.addAction(Intent.ACTION_USER_SWITCHED); 127 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 128 mContext.registerReceiverAsUser(new BroadcastReceiver() { 129 @Override 130 public void onReceive(Context context, Intent intent) { 131 String action = intent.getAction(); 132 if (Intent.ACTION_USER_SWITCHED.equals(action)) { 133 switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); 134 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 135 removeUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); 136 } 137 } 138 }, UserHandle.ALL, intentFilter, null, null); 139 } 140 141 private void buildTvInputListLocked(int userId) { 142 UserState userState = getUserStateLocked(userId); 143 userState.inputMap.clear(); 144 145 if (DEBUG) Slog.d(TAG, "buildTvInputList"); 146 PackageManager pm = mContext.getPackageManager(); 147 List<ResolveInfo> services = pm.queryIntentServices( 148 new Intent(TvInputService.SERVICE_INTERFACE), PackageManager.GET_SERVICES); 149 for (ResolveInfo ri : services) { 150 ServiceInfo si = ri.serviceInfo; 151 if (!android.Manifest.permission.BIND_TV_INPUT.equals(si.permission)) { 152 Slog.w(TAG, "Skipping TV input " + si.name + ": it does not require the permission " 153 + android.Manifest.permission.BIND_TV_INPUT); 154 continue; 155 } 156 TvInputInfo info = new TvInputInfo(ri); 157 if (DEBUG) Slog.d(TAG, "add " + info.getId()); 158 userState.inputMap.put(info.getId(), info); 159 } 160 } 161 162 private void switchUser(int userId) { 163 synchronized (mLock) { 164 if (mCurrentUserId == userId) { 165 return; 166 } 167 // final int oldUserId = mCurrentUserId; 168 // TODO: Release services and sessions in the old user state, if needed. 169 mCurrentUserId = userId; 170 171 UserState userState = mUserStates.get(userId); 172 if (userState == null) { 173 userState = new UserState(); 174 } 175 mUserStates.put(userId, userState); 176 buildTvInputListLocked(userId); 177 } 178 } 179 180 private void removeUser(int userId) { 181 synchronized (mLock) { 182 UserState userState = mUserStates.get(userId); 183 if (userState == null) { 184 return; 185 } 186 // Release created sessions. 187 for (SessionState state : userState.sessionStateMap.values()) { 188 if (state.mSession != null) { 189 try { 190 state.mSession.release(); 191 } catch (RemoteException e) { 192 Slog.e(TAG, "error in release", e); 193 } 194 } 195 } 196 userState.sessionStateMap.clear(); 197 198 // Unregister all callbacks and unbind all services. 199 for (ServiceState serviceState : userState.serviceStateMap.values()) { 200 if (serviceState.mCallback != null) { 201 try { 202 serviceState.mService.unregisterCallback(serviceState.mCallback); 203 } catch (RemoteException e) { 204 Slog.e(TAG, "error in unregisterCallback", e); 205 } 206 } 207 serviceState.mClients.clear(); 208 mContext.unbindService(serviceState.mConnection); 209 } 210 userState.serviceStateMap.clear(); 211 212 mUserStates.remove(userId); 213 } 214 } 215 216 private UserState getUserStateLocked(int userId) { 217 UserState userState = mUserStates.get(userId); 218 if (userState == null) { 219 throw new IllegalStateException("User state not found for user ID " + userId); 220 } 221 return userState; 222 } 223 224 private ServiceState getServiceStateLocked(String inputId, int userId) { 225 UserState userState = getUserStateLocked(userId); 226 ServiceState serviceState = userState.serviceStateMap.get(inputId); 227 if (serviceState == null) { 228 throw new IllegalStateException("Service state not found for " + inputId + " (userId=" 229 + userId + ")"); 230 } 231 return serviceState; 232 } 233 234 private SessionState getSessionStateLocked(IBinder sessionToken, int callingUid, int userId) { 235 UserState userState = getUserStateLocked(userId); 236 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 237 if (sessionState == null) { 238 throw new IllegalArgumentException("Session state not found for token " + sessionToken); 239 } 240 // Only the application that requested this session or the system can access it. 241 if (callingUid != Process.SYSTEM_UID && callingUid != sessionState.mCallingUid) { 242 throw new SecurityException("Illegal access to the session with token " + sessionToken 243 + " from uid " + callingUid); 244 } 245 return sessionState; 246 } 247 248 private ITvInputSession getSessionLocked(IBinder sessionToken, int callingUid, int userId) { 249 SessionState sessionState = getSessionStateLocked(sessionToken, callingUid, userId); 250 ITvInputSession session = sessionState.mSession; 251 if (session == null) { 252 throw new IllegalStateException("Session not yet created for token " + sessionToken); 253 } 254 return session; 255 } 256 257 private int resolveCallingUserId(int callingPid, int callingUid, int requestedUserId, 258 String methodName) { 259 return ActivityManager.handleIncomingUser(callingPid, callingUid, requestedUserId, false, 260 false, methodName, null); 261 } 262 263 private void updateServiceConnectionLocked(String inputId, int userId) { 264 UserState userState = getUserStateLocked(userId); 265 ServiceState serviceState = userState.serviceStateMap.get(inputId); 266 if (serviceState == null) { 267 return; 268 } 269 if (serviceState.mReconnecting) { 270 if (!serviceState.mSessionTokens.isEmpty()) { 271 // wait until all the sessions are removed. 272 return; 273 } 274 serviceState.mReconnecting = false; 275 } 276 boolean isStateEmpty = serviceState.mClients.isEmpty() 277 && serviceState.mSessionTokens.isEmpty(); 278 if (serviceState.mService == null && !isStateEmpty && userId == mCurrentUserId) { 279 // This means that the service is not yet connected but its state indicates that we 280 // have pending requests. Then, connect the service. 281 if (serviceState.mBound) { 282 // We have already bound to the service so we don't try to bind again until after we 283 // unbind later on. 284 return; 285 } 286 if (DEBUG) { 287 Slog.d(TAG, "bindServiceAsUser(inputId=" + inputId + ", userId=" + userId 288 + ")"); 289 } 290 291 Intent i = new Intent(TvInputService.SERVICE_INTERFACE).setComponent( 292 userState.inputMap.get(inputId).getComponent()); 293 mContext.bindServiceAsUser(i, serviceState.mConnection, Context.BIND_AUTO_CREATE, 294 new UserHandle(userId)); 295 serviceState.mBound = true; 296 } else if (serviceState.mService != null && isStateEmpty) { 297 // This means that the service is already connected but its state indicates that we have 298 // nothing to do with it. Then, disconnect the service. 299 if (DEBUG) { 300 Slog.d(TAG, "unbindService(inputId=" + inputId + ")"); 301 } 302 mContext.unbindService(serviceState.mConnection); 303 userState.serviceStateMap.remove(inputId); 304 } 305 } 306 307 private void createSessionInternalLocked(ITvInputService service, final IBinder sessionToken, 308 final int userId) { 309 final SessionState sessionState = 310 getUserStateLocked(userId).sessionStateMap.get(sessionToken); 311 if (DEBUG) { 312 Slog.d(TAG, "createSessionInternalLocked(inputId=" + sessionState.mInputId + ")"); 313 } 314 315 final InputChannel[] channels = InputChannel.openInputChannelPair(sessionToken.toString()); 316 317 // Set up a callback to send the session token. 318 ITvInputSessionCallback callback = new ITvInputSessionCallback.Stub() { 319 @Override 320 public void onSessionCreated(ITvInputSession session) { 321 if (DEBUG) { 322 Slog.d(TAG, "onSessionCreated(inputId=" + sessionState.mInputId + ")"); 323 } 324 synchronized (mLock) { 325 sessionState.mSession = session; 326 if (session == null) { 327 removeSessionStateLocked(sessionToken, userId); 328 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, 329 null, null, sessionState.mSeq, userId); 330 } else { 331 try { 332 session.asBinder().linkToDeath(sessionState, 0); 333 } catch (RemoteException e) { 334 Slog.e(TAG, "Session is already died."); 335 } 336 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, 337 sessionToken, channels[0], sessionState.mSeq, userId); 338 } 339 channels[0].dispose(); 340 } 341 } 342 343 @Override 344 public void onVideoSizeChanged(int width, int height) throws RemoteException { 345 synchronized (mLock) { 346 if (DEBUG) { 347 Slog.d(TAG, "onVideoSizeChanged(" + width + ", " + height + ")"); 348 } 349 if (sessionState.mSession == null || sessionState.mClient == null) { 350 return; 351 } 352 try { 353 sessionState.mClient.onVideoSizeChanged(width, height, sessionState.mSeq); 354 } catch (RemoteException e) { 355 Slog.e(TAG, "error in onSessionEvent"); 356 } 357 } 358 } 359 360 @Override 361 public void onSessionEvent(String eventType, Bundle eventArgs) { 362 synchronized (mLock) { 363 if (DEBUG) { 364 Slog.d(TAG, "onEvent(what=" + eventType + ", data=" + eventArgs + ")"); 365 } 366 if (sessionState.mSession == null || sessionState.mClient == null) { 367 return; 368 } 369 try { 370 sessionState.mClient.onSessionEvent(eventType, eventArgs, 371 sessionState.mSeq); 372 } catch (RemoteException e) { 373 Slog.e(TAG, "error in onSessionEvent"); 374 } 375 } 376 } 377 }; 378 379 // Create a session. When failed, send a null token immediately. 380 try { 381 service.createSession(channels[1], callback); 382 } catch (RemoteException e) { 383 Slog.e(TAG, "error in createSession", e); 384 removeSessionStateLocked(sessionToken, userId); 385 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, null, null, 386 sessionState.mSeq, userId); 387 } 388 channels[1].dispose(); 389 } 390 391 private void sendSessionTokenToClientLocked(ITvInputClient client, String inputId, 392 IBinder sessionToken, InputChannel channel, int seq, int userId) { 393 try { 394 client.onSessionCreated(inputId, sessionToken, channel, seq); 395 } catch (RemoteException exception) { 396 Slog.e(TAG, "error in onSessionCreated", exception); 397 } 398 } 399 400 private void releaseSessionLocked(IBinder sessionToken, int callingUid, int userId) { 401 SessionState sessionState = getSessionStateLocked(sessionToken, callingUid, userId); 402 if (sessionState.mSession != null) { 403 try { 404 sessionState.mSession.release(); 405 } catch (RemoteException e) { 406 Slog.w(TAG, "session is already disapeared", e); 407 } 408 sessionState.mSession = null; 409 } 410 removeSessionStateLocked(sessionToken, userId); 411 } 412 413 private void removeSessionStateLocked(IBinder sessionToken, int userId) { 414 // Remove the session state from the global session state map of the current user. 415 UserState userState = getUserStateLocked(userId); 416 SessionState sessionState = userState.sessionStateMap.remove(sessionToken); 417 418 // Close the open log entry, if any. 419 if (sessionState.mLogUri != null) { 420 SomeArgs args = SomeArgs.obtain(); 421 args.arg1 = sessionState.mLogUri; 422 args.arg2 = System.currentTimeMillis(); 423 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args).sendToTarget(); 424 } 425 426 // Also remove the session token from the session token list of the current service. 427 ServiceState serviceState = userState.serviceStateMap.get(sessionState.mInputId); 428 if (serviceState != null) { 429 serviceState.mSessionTokens.remove(sessionToken); 430 } 431 updateServiceConnectionLocked(sessionState.mInputId, userId); 432 } 433 434 private void broadcastServiceAvailabilityChangedLocked(ServiceState serviceState) { 435 for (IBinder iBinder : serviceState.mClients) { 436 ITvInputClient client = ITvInputClient.Stub.asInterface(iBinder); 437 try { 438 client.onAvailabilityChanged( 439 serviceState.mTvInputInfo.getId(), serviceState.mAvailable); 440 } catch (RemoteException e) { 441 Slog.e(TAG, "error in onAvailabilityChanged", e); 442 } 443 } 444 } 445 446 private final class BinderService extends ITvInputManager.Stub { 447 @Override 448 public List<TvInputInfo> getTvInputList(int userId) { 449 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 450 Binder.getCallingUid(), userId, "getTvInputList"); 451 final long identity = Binder.clearCallingIdentity(); 452 try { 453 synchronized (mLock) { 454 UserState userState = getUserStateLocked(resolvedUserId); 455 return new ArrayList<TvInputInfo>(userState.inputMap.values()); 456 } 457 } finally { 458 Binder.restoreCallingIdentity(identity); 459 } 460 } 461 462 @Override 463 public boolean getAvailability(final ITvInputClient client, final String inputId, 464 int userId) { 465 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 466 Binder.getCallingUid(), userId, "getAvailability"); 467 final long identity = Binder.clearCallingIdentity(); 468 try { 469 synchronized (mLock) { 470 UserState userState = getUserStateLocked(resolvedUserId); 471 ServiceState serviceState = userState.serviceStateMap.get(inputId); 472 if (serviceState != null) { 473 // We already know the status of this input service. Return the cached 474 // status. 475 return serviceState.mAvailable; 476 } 477 } 478 } finally { 479 Binder.restoreCallingIdentity(identity); 480 } 481 return false; 482 } 483 484 @Override 485 public void registerCallback(final ITvInputClient client, final String inputId, 486 int userId) { 487 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 488 Binder.getCallingUid(), userId, "registerCallback"); 489 final long identity = Binder.clearCallingIdentity(); 490 try { 491 synchronized (mLock) { 492 // Create a new service callback and add it to the callback map of the current 493 // service. 494 UserState userState = getUserStateLocked(resolvedUserId); 495 ServiceState serviceState = userState.serviceStateMap.get(inputId); 496 if (serviceState == null) { 497 serviceState = new ServiceState( 498 userState.inputMap.get(inputId), resolvedUserId); 499 userState.serviceStateMap.put(inputId, serviceState); 500 } 501 IBinder iBinder = client.asBinder(); 502 if (!serviceState.mClients.contains(iBinder)) { 503 serviceState.mClients.add(iBinder); 504 } 505 if (serviceState.mService != null) { 506 if (serviceState.mCallback != null) { 507 // We already handled. 508 return; 509 } 510 serviceState.mCallback = new ServiceCallback(resolvedUserId); 511 try { 512 serviceState.mService.registerCallback(serviceState.mCallback); 513 } catch (RemoteException e) { 514 Slog.e(TAG, "error in registerCallback", e); 515 } 516 } else { 517 updateServiceConnectionLocked(inputId, resolvedUserId); 518 } 519 } 520 } finally { 521 Binder.restoreCallingIdentity(identity); 522 } 523 } 524 525 @Override 526 public void unregisterCallback(ITvInputClient client, String inputId, int userId) { 527 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 528 Binder.getCallingUid(), userId, "unregisterCallback"); 529 final long identity = Binder.clearCallingIdentity(); 530 try { 531 synchronized (mLock) { 532 UserState userState = getUserStateLocked(resolvedUserId); 533 ServiceState serviceState = userState.serviceStateMap.get(inputId); 534 if (serviceState == null) { 535 return; 536 } 537 538 // Remove this client from the client list and unregister the callback. 539 serviceState.mClients.remove(client.asBinder()); 540 if (!serviceState.mClients.isEmpty()) { 541 // We have other clients who want to keep the callback. Do this later. 542 return; 543 } 544 if (serviceState.mService == null || serviceState.mCallback == null) { 545 return; 546 } 547 try { 548 serviceState.mService.unregisterCallback(serviceState.mCallback); 549 } catch (RemoteException e) { 550 Slog.e(TAG, "error in unregisterCallback", e); 551 } finally { 552 serviceState.mCallback = null; 553 updateServiceConnectionLocked(inputId, resolvedUserId); 554 } 555 } 556 } finally { 557 Binder.restoreCallingIdentity(identity); 558 } 559 } 560 561 @Override 562 public void createSession(final ITvInputClient client, final String inputId, 563 int seq, int userId) { 564 final int callingUid = Binder.getCallingUid(); 565 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 566 userId, "createSession"); 567 final long identity = Binder.clearCallingIdentity(); 568 try { 569 synchronized (mLock) { 570 UserState userState = getUserStateLocked(resolvedUserId); 571 ServiceState serviceState = userState.serviceStateMap.get(inputId); 572 if (serviceState == null) { 573 serviceState = new ServiceState( 574 userState.inputMap.get(inputId), resolvedUserId); 575 userState.serviceStateMap.put(inputId, serviceState); 576 } 577 // Send a null token immediately while reconnecting. 578 if (serviceState.mReconnecting == true) { 579 sendSessionTokenToClientLocked(client, inputId, null, null, seq, userId); 580 return; 581 } 582 583 // Create a new session token and a session state. 584 IBinder sessionToken = new Binder(); 585 SessionState sessionState = new SessionState( 586 sessionToken, inputId, client, seq, callingUid, resolvedUserId); 587 588 // Add them to the global session state map of the current user. 589 userState.sessionStateMap.put(sessionToken, sessionState); 590 591 // Also, add them to the session state map of the current service. 592 serviceState.mSessionTokens.add(sessionToken); 593 594 if (serviceState.mService != null) { 595 createSessionInternalLocked(serviceState.mService, sessionToken, 596 resolvedUserId); 597 } else { 598 updateServiceConnectionLocked(inputId, resolvedUserId); 599 } 600 } 601 } finally { 602 Binder.restoreCallingIdentity(identity); 603 } 604 } 605 606 @Override 607 public void releaseSession(IBinder sessionToken, int userId) { 608 final int callingUid = Binder.getCallingUid(); 609 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 610 userId, "releaseSession"); 611 final long identity = Binder.clearCallingIdentity(); 612 try { 613 synchronized (mLock) { 614 releaseSessionLocked(sessionToken, callingUid, resolvedUserId); 615 } 616 } finally { 617 Binder.restoreCallingIdentity(identity); 618 } 619 } 620 621 @Override 622 public void setSurface(IBinder sessionToken, Surface surface, int userId) { 623 final int callingUid = Binder.getCallingUid(); 624 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 625 userId, "setSurface"); 626 final long identity = Binder.clearCallingIdentity(); 627 try { 628 synchronized (mLock) { 629 try { 630 getSessionLocked(sessionToken, callingUid, resolvedUserId).setSurface( 631 surface); 632 } catch (RemoteException e) { 633 Slog.e(TAG, "error in setSurface", e); 634 } 635 } 636 } finally { 637 if (surface != null) { 638 // surface is not used in TvInputManagerService. 639 surface.release(); 640 } 641 Binder.restoreCallingIdentity(identity); 642 } 643 } 644 645 @Override 646 public void setVolume(IBinder sessionToken, float volume, int userId) { 647 final int callingUid = Binder.getCallingUid(); 648 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 649 userId, "setVolume"); 650 final long identity = Binder.clearCallingIdentity(); 651 try { 652 synchronized (mLock) { 653 try { 654 getSessionLocked(sessionToken, callingUid, resolvedUserId).setVolume( 655 volume); 656 } catch (RemoteException e) { 657 Slog.e(TAG, "error in setVolume", e); 658 } 659 } 660 } finally { 661 Binder.restoreCallingIdentity(identity); 662 } 663 } 664 665 @Override 666 public void tune(IBinder sessionToken, final Uri channelUri, int userId) { 667 final int callingUid = Binder.getCallingUid(); 668 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 669 userId, "tune"); 670 final long identity = Binder.clearCallingIdentity(); 671 try { 672 synchronized (mLock) { 673 try { 674 getSessionLocked(sessionToken, callingUid, resolvedUserId).tune(channelUri); 675 676 long currentTime = System.currentTimeMillis(); 677 long channelId = ContentUris.parseId(channelUri); 678 679 // Close the open log entry first, if any. 680 UserState userState = getUserStateLocked(resolvedUserId); 681 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 682 if (sessionState.mLogUri != null) { 683 SomeArgs args = SomeArgs.obtain(); 684 args.arg1 = sessionState.mLogUri; 685 args.arg2 = currentTime; 686 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args) 687 .sendToTarget(); 688 } 689 690 // Create a log entry and fill it later. 691 ContentValues values = new ContentValues(); 692 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 693 currentTime); 694 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 0); 695 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 696 697 sessionState.mLogUri = mContentResolver.insert( 698 TvContract.WatchedPrograms.CONTENT_URI, values); 699 SomeArgs args = SomeArgs.obtain(); 700 args.arg1 = sessionState.mLogUri; 701 args.arg2 = ContentUris.parseId(channelUri); 702 args.arg3 = currentTime; 703 mLogHandler.obtainMessage(LogHandler.MSG_OPEN_ENTRY, args).sendToTarget(); 704 } catch (RemoteException e) { 705 Slog.e(TAG, "error in tune", e); 706 return; 707 } 708 } 709 } finally { 710 Binder.restoreCallingIdentity(identity); 711 } 712 } 713 714 @Override 715 public void createOverlayView(IBinder sessionToken, IBinder windowToken, Rect frame, 716 int userId) { 717 final int callingUid = Binder.getCallingUid(); 718 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 719 userId, "createOverlayView"); 720 final long identity = Binder.clearCallingIdentity(); 721 try { 722 synchronized (mLock) { 723 try { 724 getSessionLocked(sessionToken, callingUid, resolvedUserId) 725 .createOverlayView(windowToken, frame); 726 } catch (RemoteException e) { 727 Slog.e(TAG, "error in createOverlayView", e); 728 } 729 } 730 } finally { 731 Binder.restoreCallingIdentity(identity); 732 } 733 } 734 735 @Override 736 public void relayoutOverlayView(IBinder sessionToken, Rect frame, int userId) { 737 final int callingUid = Binder.getCallingUid(); 738 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 739 userId, "relayoutOverlayView"); 740 final long identity = Binder.clearCallingIdentity(); 741 try { 742 synchronized (mLock) { 743 try { 744 getSessionLocked(sessionToken, callingUid, resolvedUserId) 745 .relayoutOverlayView(frame); 746 } catch (RemoteException e) { 747 Slog.e(TAG, "error in relayoutOverlayView", e); 748 } 749 } 750 } finally { 751 Binder.restoreCallingIdentity(identity); 752 } 753 } 754 755 @Override 756 public void removeOverlayView(IBinder sessionToken, int userId) { 757 final int callingUid = Binder.getCallingUid(); 758 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 759 userId, "removeOverlayView"); 760 final long identity = Binder.clearCallingIdentity(); 761 try { 762 synchronized (mLock) { 763 try { 764 getSessionLocked(sessionToken, callingUid, resolvedUserId) 765 .removeOverlayView(); 766 } catch (RemoteException e) { 767 Slog.e(TAG, "error in removeOverlayView", e); 768 } 769 } 770 } finally { 771 Binder.restoreCallingIdentity(identity); 772 } 773 } 774 775 @Override 776 public List<TvInputHardwareInfo> getHardwareList() throws RemoteException { 777 if (mContext.checkCallingPermission( 778 android.Manifest.permission.TV_INPUT_HARDWARE) 779 != PackageManager.PERMISSION_GRANTED) { 780 return null; 781 } 782 783 final long identity = Binder.clearCallingIdentity(); 784 try { 785 return mTvInputHardwareManager.getHardwareList(); 786 } finally { 787 Binder.restoreCallingIdentity(identity); 788 } 789 } 790 791 @Override 792 public ITvInputHardware acquireTvInputHardware(int deviceId, 793 ITvInputHardwareCallback callback, int userId) throws RemoteException { 794 if (mContext.checkCallingPermission( 795 android.Manifest.permission.TV_INPUT_HARDWARE) 796 != PackageManager.PERMISSION_GRANTED) { 797 return null; 798 } 799 800 final long identity = Binder.clearCallingIdentity(); 801 final int callingUid = Binder.getCallingUid(); 802 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 803 userId, "acquireTvInputHardware"); 804 try { 805 return mTvInputHardwareManager.acquireHardware( 806 deviceId, callback, callingUid, resolvedUserId); 807 } finally { 808 Binder.restoreCallingIdentity(identity); 809 } 810 } 811 812 @Override 813 public void releaseTvInputHardware(int deviceId, ITvInputHardware hardware, int userId) 814 throws RemoteException { 815 if (mContext.checkCallingPermission( 816 android.Manifest.permission.TV_INPUT_HARDWARE) 817 != PackageManager.PERMISSION_GRANTED) { 818 return; 819 } 820 821 final long identity = Binder.clearCallingIdentity(); 822 final int callingUid = Binder.getCallingUid(); 823 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 824 userId, "releaseTvInputHardware"); 825 try { 826 mTvInputHardwareManager.releaseHardware( 827 deviceId, hardware, callingUid, resolvedUserId); 828 } finally { 829 Binder.restoreCallingIdentity(identity); 830 } 831 } 832 } 833 834 private static final class UserState { 835 // A mapping from the TV input id to its TvInputInfo. 836 private final Map<String, TvInputInfo> inputMap = new HashMap<String,TvInputInfo>(); 837 838 // A mapping from the name of a TV input service to its state. 839 private final Map<String, ServiceState> serviceStateMap = 840 new HashMap<String, ServiceState>(); 841 842 // A mapping from the token of a TV input session to its state. 843 private final Map<IBinder, SessionState> sessionStateMap = 844 new HashMap<IBinder, SessionState>(); 845 } 846 847 private final class ServiceState { 848 // TODO: need to implement DeathRecipient for clients. 849 private final List<IBinder> mClients = new ArrayList<IBinder>(); 850 private final List<IBinder> mSessionTokens = new ArrayList<IBinder>(); 851 private final ServiceConnection mConnection; 852 private final TvInputInfo mTvInputInfo; 853 854 private ITvInputService mService; 855 private ServiceCallback mCallback; 856 private boolean mBound; 857 private boolean mAvailable; 858 private boolean mReconnecting; 859 860 private ServiceState(TvInputInfo inputInfo, int userId) { 861 mTvInputInfo = inputInfo; 862 mConnection = new InputServiceConnection(inputInfo, userId); 863 } 864 } 865 866 private final class SessionState implements IBinder.DeathRecipient { 867 private final String mInputId; 868 private final ITvInputClient mClient; 869 private final int mSeq; 870 private final int mCallingUid; 871 private final int mUserId; 872 private final IBinder mToken; 873 private ITvInputSession mSession; 874 private Uri mLogUri; 875 876 private SessionState(IBinder token, String inputId, ITvInputClient client, int seq, 877 int callingUid, int userId) { 878 mToken = token; 879 mInputId = inputId; 880 mClient = client; 881 mSeq = seq; 882 mCallingUid = callingUid; 883 mUserId = userId; 884 } 885 886 @Override 887 public void binderDied() { 888 synchronized (mLock) { 889 mSession = null; 890 if (mClient != null) { 891 try { 892 mClient.onSessionReleased(mSeq); 893 } catch(RemoteException e) { 894 Slog.e(TAG, "error in onSessionReleased", e); 895 } 896 } 897 removeSessionStateLocked(mToken, mUserId); 898 } 899 } 900 } 901 902 private final class InputServiceConnection implements ServiceConnection { 903 private final TvInputInfo mTvInputInfo; 904 private final int mUserId; 905 906 private InputServiceConnection(TvInputInfo inputInfo, int userId) { 907 mUserId = userId; 908 mTvInputInfo = inputInfo; 909 } 910 911 @Override 912 public void onServiceConnected(ComponentName name, IBinder service) { 913 if (DEBUG) { 914 Slog.d(TAG, "onServiceConnected(inputId=" + mTvInputInfo.getId() + ")"); 915 } 916 synchronized (mLock) { 917 ServiceState serviceState = getServiceStateLocked(mTvInputInfo.getId(), mUserId); 918 serviceState.mService = ITvInputService.Stub.asInterface(service); 919 920 // Register a callback, if we need to. 921 if (!serviceState.mClients.isEmpty() && serviceState.mCallback == null) { 922 serviceState.mCallback = new ServiceCallback(mUserId); 923 try { 924 serviceState.mService.registerCallback(serviceState.mCallback); 925 } catch (RemoteException e) { 926 Slog.e(TAG, "error in registerCallback", e); 927 } 928 } 929 930 // And create sessions, if any. 931 for (IBinder sessionToken : serviceState.mSessionTokens) { 932 createSessionInternalLocked(serviceState.mService, sessionToken, mUserId); 933 } 934 } 935 } 936 937 @Override 938 public void onServiceDisconnected(ComponentName name) { 939 if (DEBUG) { 940 Slog.d(TAG, "onServiceDisconnected(inputId=" + mTvInputInfo.getId() + ")"); 941 } 942 if (!mTvInputInfo.getComponent().equals(name)) { 943 throw new IllegalArgumentException("Mismatched ComponentName: " 944 + mTvInputInfo.getComponent() + " (expected), " + name + " (actual)."); 945 } 946 synchronized (mLock) { 947 UserState userState = getUserStateLocked(mUserId); 948 ServiceState serviceState = userState.serviceStateMap.get(mTvInputInfo.getId()); 949 if (serviceState != null) { 950 serviceState.mReconnecting = true; 951 serviceState.mBound = false; 952 serviceState.mService = null; 953 serviceState.mCallback = null; 954 955 // Send null tokens for not finishing create session events. 956 for (IBinder sessionToken : serviceState.mSessionTokens) { 957 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 958 if (sessionState.mSession == null) { 959 removeSessionStateLocked(sessionToken, sessionState.mUserId); 960 sendSessionTokenToClientLocked(sessionState.mClient, 961 sessionState.mInputId, null, null, sessionState.mSeq, 962 sessionState.mUserId); 963 } 964 } 965 966 if (serviceState.mAvailable) { 967 serviceState.mAvailable = false; 968 broadcastServiceAvailabilityChangedLocked(serviceState); 969 } 970 updateServiceConnectionLocked(mTvInputInfo.getId(), mUserId); 971 } 972 } 973 } 974 } 975 976 private final class ServiceCallback extends ITvInputServiceCallback.Stub { 977 private final int mUserId; 978 979 ServiceCallback(int userId) { 980 mUserId = userId; 981 } 982 983 @Override 984 public void onAvailabilityChanged(String inputId, boolean isAvailable) { 985 if (DEBUG) { 986 Slog.d(TAG, "onAvailabilityChanged(inputId=" + inputId + ", isAvailable=" 987 + isAvailable + ")"); 988 } 989 synchronized (mLock) { 990 ServiceState serviceState = getServiceStateLocked(inputId, mUserId); 991 if (serviceState.mAvailable != isAvailable) { 992 serviceState.mAvailable = isAvailable; 993 broadcastServiceAvailabilityChangedLocked(serviceState); 994 } 995 } 996 } 997 } 998 999 private final class LogHandler extends Handler { 1000 private static final int MSG_OPEN_ENTRY = 1; 1001 private static final int MSG_UPDATE_ENTRY = 2; 1002 private static final int MSG_CLOSE_ENTRY = 3; 1003 1004 public LogHandler(Looper looper) { 1005 super(looper); 1006 } 1007 1008 @Override 1009 public void handleMessage(Message msg) { 1010 switch (msg.what) { 1011 case MSG_OPEN_ENTRY: { 1012 SomeArgs args = (SomeArgs) msg.obj; 1013 Uri uri = (Uri) args.arg1; 1014 long channelId = (long) args.arg2; 1015 long time = (long) args.arg3; 1016 onOpenEntry(uri, channelId, time); 1017 args.recycle(); 1018 return; 1019 } 1020 case MSG_UPDATE_ENTRY: { 1021 SomeArgs args = (SomeArgs) msg.obj; 1022 Uri uri = (Uri) args.arg1; 1023 long channelId = (long) args.arg2; 1024 long time = (long) args.arg3; 1025 onUpdateEntry(uri, channelId, time); 1026 args.recycle(); 1027 return; 1028 } 1029 case MSG_CLOSE_ENTRY: { 1030 SomeArgs args = (SomeArgs) msg.obj; 1031 Uri uri = (Uri) args.arg1; 1032 long time = (long) args.arg2; 1033 onCloseEntry(uri, time); 1034 args.recycle(); 1035 return; 1036 } 1037 default: { 1038 Slog.w(TAG, "Unhandled message code: " + msg.what); 1039 return; 1040 } 1041 } 1042 } 1043 1044 private void onOpenEntry(Uri uri, long channelId, long watchStarttime) { 1045 String[] projection = { 1046 TvContract.Programs.COLUMN_TITLE, 1047 TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS, 1048 TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS, 1049 TvContract.Programs.COLUMN_SHORT_DESCRIPTION 1050 }; 1051 String selection = TvContract.Programs.COLUMN_CHANNEL_ID + "=? AND " 1052 + TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + "<=? AND " 1053 + TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS + ">?"; 1054 String[] selectionArgs = { 1055 String.valueOf(channelId), 1056 String.valueOf(watchStarttime), 1057 String.valueOf(watchStarttime) 1058 }; 1059 String sortOrder = TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + " ASC"; 1060 Cursor cursor = null; 1061 try { 1062 cursor = mContentResolver.query(TvContract.Programs.CONTENT_URI, projection, 1063 selection, selectionArgs, sortOrder); 1064 if (cursor != null && cursor.moveToNext()) { 1065 ContentValues values = new ContentValues(); 1066 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, cursor.getString(0)); 1067 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1068 cursor.getLong(1)); 1069 long endTime = cursor.getLong(2); 1070 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1071 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, cursor.getString(3)); 1072 mContentResolver.update(uri, values, null, null); 1073 1074 // Schedule an update when the current program ends. 1075 SomeArgs args = SomeArgs.obtain(); 1076 args.arg1 = uri; 1077 args.arg2 = channelId; 1078 args.arg3 = endTime; 1079 Message msg = obtainMessage(LogHandler.MSG_UPDATE_ENTRY, args); 1080 sendMessageDelayed(msg, endTime - System.currentTimeMillis()); 1081 } 1082 } finally { 1083 if (cursor != null) { 1084 cursor.close(); 1085 } 1086 } 1087 } 1088 1089 private void onUpdateEntry(Uri uri, long channelId, long time) { 1090 String[] projection = { 1091 TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1092 TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 1093 TvContract.WatchedPrograms.COLUMN_TITLE, 1094 TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1095 TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, 1096 TvContract.WatchedPrograms.COLUMN_DESCRIPTION 1097 }; 1098 Cursor cursor = null; 1099 try { 1100 cursor = mContentResolver.query(uri, projection, null, null, null); 1101 if (cursor != null && cursor.moveToNext()) { 1102 long watchStartTime = cursor.getLong(0); 1103 long watchEndTime = cursor.getLong(1); 1104 String title = cursor.getString(2); 1105 long startTime = cursor.getLong(3); 1106 long endTime = cursor.getLong(4); 1107 String description = cursor.getString(5); 1108 1109 // Do nothing if the current log entry is already closed. 1110 if (watchEndTime > 0) { 1111 return; 1112 } 1113 1114 // The current program has just ended. Create a (complete) log entry off the 1115 // current entry. 1116 ContentValues values = new ContentValues(); 1117 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1118 watchStartTime); 1119 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, time); 1120 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 1121 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, title); 1122 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, startTime); 1123 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1124 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, description); 1125 mContentResolver.insert(TvContract.WatchedPrograms.CONTENT_URI, values); 1126 } 1127 } finally { 1128 if (cursor != null) { 1129 cursor.close(); 1130 } 1131 } 1132 // Re-open the current log entry with the next program information. 1133 onOpenEntry(uri, channelId, time); 1134 } 1135 1136 private void onCloseEntry(Uri uri, long watchEndTime) { 1137 ContentValues values = new ContentValues(); 1138 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, watchEndTime); 1139 mContentResolver.update(uri, values, null, null); 1140 } 1141 } 1142} 1143