TvInputManagerService.java revision e7bb7d6bb2257c24076f5a4b9f536f90a6637f58
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 org.xmlpull.v1.XmlPullParserException; 67 68import java.io.IOException; 69 70import java.util.ArrayList; 71import java.util.HashMap; 72import java.util.List; 73import java.util.Map; 74 75/** This class provides a system service that manages television inputs. */ 76public final class TvInputManagerService extends SystemService { 77 // STOPSHIP: Turn debugging off. 78 private static final boolean DEBUG = true; 79 private static final String TAG = "TvInputManagerService"; 80 81 private final Context mContext; 82 private final TvInputHardwareManager mTvInputHardwareManager; 83 84 private final ContentResolver mContentResolver; 85 86 // A global lock. 87 private final Object mLock = new Object(); 88 89 // ID of the current user. 90 private int mCurrentUserId = UserHandle.USER_OWNER; 91 92 // A map from user id to UserState. 93 private final SparseArray<UserState> mUserStates = new SparseArray<UserState>(); 94 95 private final Handler mLogHandler; 96 97 public TvInputManagerService(Context context) { 98 super(context); 99 100 mContext = context; 101 mContentResolver = context.getContentResolver(); 102 mLogHandler = new LogHandler(IoThread.get().getLooper()); 103 104 mTvInputHardwareManager = new TvInputHardwareManager(context); 105 registerBroadcastReceivers(); 106 107 synchronized (mLock) { 108 mUserStates.put(mCurrentUserId, new UserState()); 109 buildTvInputListLocked(mCurrentUserId); 110 } 111 } 112 113 @Override 114 public void onStart() { 115 publishBinderService(Context.TV_INPUT_SERVICE, new BinderService()); 116 } 117 118 private void registerBroadcastReceivers() { 119 PackageMonitor monitor = new PackageMonitor() { 120 @Override 121 public void onSomePackagesChanged() { 122 synchronized (mLock) { 123 buildTvInputListLocked(mCurrentUserId); 124 } 125 } 126 }; 127 monitor.register(mContext, null, UserHandle.ALL, true); 128 129 IntentFilter intentFilter = new IntentFilter(); 130 intentFilter.addAction(Intent.ACTION_USER_SWITCHED); 131 intentFilter.addAction(Intent.ACTION_USER_REMOVED); 132 mContext.registerReceiverAsUser(new BroadcastReceiver() { 133 @Override 134 public void onReceive(Context context, Intent intent) { 135 String action = intent.getAction(); 136 if (Intent.ACTION_USER_SWITCHED.equals(action)) { 137 switchUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); 138 } else if (Intent.ACTION_USER_REMOVED.equals(action)) { 139 removeUser(intent.getIntExtra(Intent.EXTRA_USER_HANDLE, 0)); 140 } 141 } 142 }, UserHandle.ALL, intentFilter, null, null); 143 } 144 145 private void buildTvInputListLocked(int userId) { 146 UserState userState = getUserStateLocked(userId); 147 userState.inputMap.clear(); 148 149 if (DEBUG) Slog.d(TAG, "buildTvInputList"); 150 PackageManager pm = mContext.getPackageManager(); 151 List<ResolveInfo> services = pm.queryIntentServices( 152 new Intent(TvInputService.SERVICE_INTERFACE), 153 PackageManager.GET_SERVICES | PackageManager.GET_META_DATA); 154 for (ResolveInfo ri : services) { 155 ServiceInfo si = ri.serviceInfo; 156 if (!android.Manifest.permission.BIND_TV_INPUT.equals(si.permission)) { 157 Slog.w(TAG, "Skipping TV input " + si.name + ": it does not require the permission " 158 + android.Manifest.permission.BIND_TV_INPUT); 159 continue; 160 } 161 try { 162 TvInputInfo info = TvInputInfo.createTvInputInfo(mContext, ri); 163 if (DEBUG) Slog.d(TAG, "add " + info.getId()); 164 userState.inputMap.put(info.getId(), info); 165 } catch (IOException | XmlPullParserException e) { 166 Slog.e(TAG, "Can't load TV input " + si.name, e); 167 } 168 } 169 } 170 171 private void switchUser(int userId) { 172 synchronized (mLock) { 173 if (mCurrentUserId == userId) { 174 return; 175 } 176 // final int oldUserId = mCurrentUserId; 177 // TODO: Release services and sessions in the old user state, if needed. 178 mCurrentUserId = userId; 179 180 UserState userState = mUserStates.get(userId); 181 if (userState == null) { 182 userState = new UserState(); 183 } 184 mUserStates.put(userId, userState); 185 buildTvInputListLocked(userId); 186 } 187 } 188 189 private void removeUser(int userId) { 190 synchronized (mLock) { 191 UserState userState = mUserStates.get(userId); 192 if (userState == null) { 193 return; 194 } 195 // Release created sessions. 196 for (SessionState state : userState.sessionStateMap.values()) { 197 if (state.mSession != null) { 198 try { 199 state.mSession.release(); 200 } catch (RemoteException e) { 201 Slog.e(TAG, "error in release", e); 202 } 203 } 204 } 205 userState.sessionStateMap.clear(); 206 207 // Unregister all callbacks and unbind all services. 208 for (ServiceState serviceState : userState.serviceStateMap.values()) { 209 if (serviceState.mCallback != null) { 210 try { 211 serviceState.mService.unregisterCallback(serviceState.mCallback); 212 } catch (RemoteException e) { 213 Slog.e(TAG, "error in unregisterCallback", e); 214 } 215 } 216 serviceState.mClients.clear(); 217 mContext.unbindService(serviceState.mConnection); 218 } 219 userState.serviceStateMap.clear(); 220 221 mUserStates.remove(userId); 222 } 223 } 224 225 private UserState getUserStateLocked(int userId) { 226 UserState userState = mUserStates.get(userId); 227 if (userState == null) { 228 throw new IllegalStateException("User state not found for user ID " + userId); 229 } 230 return userState; 231 } 232 233 private ServiceState getServiceStateLocked(String inputId, int userId) { 234 UserState userState = getUserStateLocked(userId); 235 ServiceState serviceState = userState.serviceStateMap.get(inputId); 236 if (serviceState == null) { 237 throw new IllegalStateException("Service state not found for " + inputId + " (userId=" 238 + userId + ")"); 239 } 240 return serviceState; 241 } 242 243 private SessionState getSessionStateLocked(IBinder sessionToken, int callingUid, int userId) { 244 UserState userState = getUserStateLocked(userId); 245 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 246 if (sessionState == null) { 247 throw new IllegalArgumentException("Session state not found for token " + sessionToken); 248 } 249 // Only the application that requested this session or the system can access it. 250 if (callingUid != Process.SYSTEM_UID && callingUid != sessionState.mCallingUid) { 251 throw new SecurityException("Illegal access to the session with token " + sessionToken 252 + " from uid " + callingUid); 253 } 254 return sessionState; 255 } 256 257 private ITvInputSession getSessionLocked(IBinder sessionToken, int callingUid, int userId) { 258 SessionState sessionState = getSessionStateLocked(sessionToken, callingUid, userId); 259 ITvInputSession session = sessionState.mSession; 260 if (session == null) { 261 throw new IllegalStateException("Session not yet created for token " + sessionToken); 262 } 263 return session; 264 } 265 266 private int resolveCallingUserId(int callingPid, int callingUid, int requestedUserId, 267 String methodName) { 268 return ActivityManager.handleIncomingUser(callingPid, callingUid, requestedUserId, false, 269 false, methodName, null); 270 } 271 272 private void updateServiceConnectionLocked(String inputId, int userId) { 273 UserState userState = getUserStateLocked(userId); 274 ServiceState serviceState = userState.serviceStateMap.get(inputId); 275 if (serviceState == null) { 276 return; 277 } 278 if (serviceState.mReconnecting) { 279 if (!serviceState.mSessionTokens.isEmpty()) { 280 // wait until all the sessions are removed. 281 return; 282 } 283 serviceState.mReconnecting = false; 284 } 285 boolean isStateEmpty = serviceState.mClients.isEmpty() 286 && serviceState.mSessionTokens.isEmpty(); 287 if (serviceState.mService == null && !isStateEmpty && userId == mCurrentUserId) { 288 // This means that the service is not yet connected but its state indicates that we 289 // have pending requests. Then, connect the service. 290 if (serviceState.mBound) { 291 // We have already bound to the service so we don't try to bind again until after we 292 // unbind later on. 293 return; 294 } 295 if (DEBUG) { 296 Slog.d(TAG, "bindServiceAsUser(inputId=" + inputId + ", userId=" + userId 297 + ")"); 298 } 299 300 Intent i = new Intent(TvInputService.SERVICE_INTERFACE).setComponent( 301 userState.inputMap.get(inputId).getComponent()); 302 mContext.bindServiceAsUser(i, serviceState.mConnection, Context.BIND_AUTO_CREATE, 303 new UserHandle(userId)); 304 serviceState.mBound = true; 305 } else if (serviceState.mService != null && isStateEmpty) { 306 // This means that the service is already connected but its state indicates that we have 307 // nothing to do with it. Then, disconnect the service. 308 if (DEBUG) { 309 Slog.d(TAG, "unbindService(inputId=" + inputId + ")"); 310 } 311 mContext.unbindService(serviceState.mConnection); 312 userState.serviceStateMap.remove(inputId); 313 } 314 } 315 316 private void createSessionInternalLocked(ITvInputService service, final IBinder sessionToken, 317 final int userId) { 318 final SessionState sessionState = 319 getUserStateLocked(userId).sessionStateMap.get(sessionToken); 320 if (DEBUG) { 321 Slog.d(TAG, "createSessionInternalLocked(inputId=" + sessionState.mInputId + ")"); 322 } 323 324 final InputChannel[] channels = InputChannel.openInputChannelPair(sessionToken.toString()); 325 326 // Set up a callback to send the session token. 327 ITvInputSessionCallback callback = new ITvInputSessionCallback.Stub() { 328 @Override 329 public void onSessionCreated(ITvInputSession session) { 330 if (DEBUG) { 331 Slog.d(TAG, "onSessionCreated(inputId=" + sessionState.mInputId + ")"); 332 } 333 synchronized (mLock) { 334 sessionState.mSession = session; 335 if (session == null) { 336 removeSessionStateLocked(sessionToken, userId); 337 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, 338 null, null, sessionState.mSeq, userId); 339 } else { 340 try { 341 session.asBinder().linkToDeath(sessionState, 0); 342 } catch (RemoteException e) { 343 Slog.e(TAG, "Session is already died."); 344 } 345 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, 346 sessionToken, channels[0], sessionState.mSeq, userId); 347 } 348 channels[0].dispose(); 349 } 350 } 351 352 @Override 353 public void onVideoSizeChanged(int width, int height) throws RemoteException { 354 synchronized (mLock) { 355 if (DEBUG) { 356 Slog.d(TAG, "onVideoSizeChanged(" + width + ", " + height + ")"); 357 } 358 if (sessionState.mSession == null || sessionState.mClient == null) { 359 return; 360 } 361 try { 362 sessionState.mClient.onVideoSizeChanged(width, height, sessionState.mSeq); 363 } catch (RemoteException e) { 364 Slog.e(TAG, "error in onSessionEvent"); 365 } 366 } 367 } 368 369 @Override 370 public void onSessionEvent(String eventType, Bundle eventArgs) { 371 synchronized (mLock) { 372 if (DEBUG) { 373 Slog.d(TAG, "onEvent(what=" + eventType + ", data=" + eventArgs + ")"); 374 } 375 if (sessionState.mSession == null || sessionState.mClient == null) { 376 return; 377 } 378 try { 379 sessionState.mClient.onSessionEvent(eventType, eventArgs, 380 sessionState.mSeq); 381 } catch (RemoteException e) { 382 Slog.e(TAG, "error in onSessionEvent"); 383 } 384 } 385 } 386 }; 387 388 // Create a session. When failed, send a null token immediately. 389 try { 390 service.createSession(channels[1], callback); 391 } catch (RemoteException e) { 392 Slog.e(TAG, "error in createSession", e); 393 removeSessionStateLocked(sessionToken, userId); 394 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, null, null, 395 sessionState.mSeq, userId); 396 } 397 channels[1].dispose(); 398 } 399 400 private void sendSessionTokenToClientLocked(ITvInputClient client, String inputId, 401 IBinder sessionToken, InputChannel channel, int seq, int userId) { 402 try { 403 client.onSessionCreated(inputId, sessionToken, channel, seq); 404 } catch (RemoteException exception) { 405 Slog.e(TAG, "error in onSessionCreated", exception); 406 } 407 } 408 409 private void releaseSessionLocked(IBinder sessionToken, int callingUid, int userId) { 410 SessionState sessionState = getSessionStateLocked(sessionToken, callingUid, userId); 411 if (sessionState.mSession != null) { 412 try { 413 sessionState.mSession.release(); 414 } catch (RemoteException e) { 415 Slog.w(TAG, "session is already disapeared", e); 416 } 417 sessionState.mSession = null; 418 } 419 removeSessionStateLocked(sessionToken, userId); 420 } 421 422 private void removeSessionStateLocked(IBinder sessionToken, int userId) { 423 // Remove the session state from the global session state map of the current user. 424 UserState userState = getUserStateLocked(userId); 425 SessionState sessionState = userState.sessionStateMap.remove(sessionToken); 426 427 // Close the open log entry, if any. 428 if (sessionState.mLogUri != null) { 429 SomeArgs args = SomeArgs.obtain(); 430 args.arg1 = sessionState.mLogUri; 431 args.arg2 = System.currentTimeMillis(); 432 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args).sendToTarget(); 433 } 434 435 // Also remove the session token from the session token list of the current service. 436 ServiceState serviceState = userState.serviceStateMap.get(sessionState.mInputId); 437 if (serviceState != null) { 438 serviceState.mSessionTokens.remove(sessionToken); 439 } 440 updateServiceConnectionLocked(sessionState.mInputId, userId); 441 } 442 443 private void broadcastServiceAvailabilityChangedLocked(ServiceState serviceState) { 444 for (IBinder iBinder : serviceState.mClients) { 445 ITvInputClient client = ITvInputClient.Stub.asInterface(iBinder); 446 try { 447 client.onAvailabilityChanged( 448 serviceState.mTvInputInfo.getId(), serviceState.mAvailable); 449 } catch (RemoteException e) { 450 Slog.e(TAG, "error in onAvailabilityChanged", e); 451 } 452 } 453 } 454 455 private final class BinderService extends ITvInputManager.Stub { 456 @Override 457 public List<TvInputInfo> getTvInputList(int userId) { 458 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 459 Binder.getCallingUid(), userId, "getTvInputList"); 460 final long identity = Binder.clearCallingIdentity(); 461 try { 462 synchronized (mLock) { 463 UserState userState = getUserStateLocked(resolvedUserId); 464 return new ArrayList<TvInputInfo>(userState.inputMap.values()); 465 } 466 } finally { 467 Binder.restoreCallingIdentity(identity); 468 } 469 } 470 471 @Override 472 public boolean getAvailability(final ITvInputClient client, final String inputId, 473 int userId) { 474 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 475 Binder.getCallingUid(), userId, "getAvailability"); 476 final long identity = Binder.clearCallingIdentity(); 477 try { 478 synchronized (mLock) { 479 UserState userState = getUserStateLocked(resolvedUserId); 480 ServiceState serviceState = userState.serviceStateMap.get(inputId); 481 if (serviceState != null) { 482 // We already know the status of this input service. Return the cached 483 // status. 484 return serviceState.mAvailable; 485 } 486 } 487 } finally { 488 Binder.restoreCallingIdentity(identity); 489 } 490 return false; 491 } 492 493 @Override 494 public void registerCallback(final ITvInputClient client, final String inputId, 495 int userId) { 496 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 497 Binder.getCallingUid(), userId, "registerCallback"); 498 final long identity = Binder.clearCallingIdentity(); 499 try { 500 synchronized (mLock) { 501 // Create a new service callback and add it to the callback map of the current 502 // service. 503 UserState userState = getUserStateLocked(resolvedUserId); 504 ServiceState serviceState = userState.serviceStateMap.get(inputId); 505 if (serviceState == null) { 506 serviceState = new ServiceState( 507 userState.inputMap.get(inputId), resolvedUserId); 508 userState.serviceStateMap.put(inputId, serviceState); 509 } 510 IBinder iBinder = client.asBinder(); 511 if (!serviceState.mClients.contains(iBinder)) { 512 serviceState.mClients.add(iBinder); 513 } 514 if (serviceState.mService != null) { 515 if (serviceState.mCallback != null) { 516 // We already handled. 517 return; 518 } 519 serviceState.mCallback = new ServiceCallback(resolvedUserId); 520 try { 521 serviceState.mService.registerCallback(serviceState.mCallback); 522 } catch (RemoteException e) { 523 Slog.e(TAG, "error in registerCallback", e); 524 } 525 } else { 526 updateServiceConnectionLocked(inputId, resolvedUserId); 527 } 528 } 529 } finally { 530 Binder.restoreCallingIdentity(identity); 531 } 532 } 533 534 @Override 535 public void unregisterCallback(ITvInputClient client, String inputId, int userId) { 536 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 537 Binder.getCallingUid(), userId, "unregisterCallback"); 538 final long identity = Binder.clearCallingIdentity(); 539 try { 540 synchronized (mLock) { 541 UserState userState = getUserStateLocked(resolvedUserId); 542 ServiceState serviceState = userState.serviceStateMap.get(inputId); 543 if (serviceState == null) { 544 return; 545 } 546 547 // Remove this client from the client list and unregister the callback. 548 serviceState.mClients.remove(client.asBinder()); 549 if (!serviceState.mClients.isEmpty()) { 550 // We have other clients who want to keep the callback. Do this later. 551 return; 552 } 553 if (serviceState.mService == null || serviceState.mCallback == null) { 554 return; 555 } 556 try { 557 serviceState.mService.unregisterCallback(serviceState.mCallback); 558 } catch (RemoteException e) { 559 Slog.e(TAG, "error in unregisterCallback", e); 560 } finally { 561 serviceState.mCallback = null; 562 updateServiceConnectionLocked(inputId, resolvedUserId); 563 } 564 } 565 } finally { 566 Binder.restoreCallingIdentity(identity); 567 } 568 } 569 570 @Override 571 public void createSession(final ITvInputClient client, final String inputId, 572 int seq, int userId) { 573 final int callingUid = Binder.getCallingUid(); 574 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 575 userId, "createSession"); 576 final long identity = Binder.clearCallingIdentity(); 577 try { 578 synchronized (mLock) { 579 UserState userState = getUserStateLocked(resolvedUserId); 580 ServiceState serviceState = userState.serviceStateMap.get(inputId); 581 if (serviceState == null) { 582 serviceState = new ServiceState( 583 userState.inputMap.get(inputId), resolvedUserId); 584 userState.serviceStateMap.put(inputId, serviceState); 585 } 586 // Send a null token immediately while reconnecting. 587 if (serviceState.mReconnecting == true) { 588 sendSessionTokenToClientLocked(client, inputId, null, null, seq, userId); 589 return; 590 } 591 592 // Create a new session token and a session state. 593 IBinder sessionToken = new Binder(); 594 SessionState sessionState = new SessionState( 595 sessionToken, inputId, client, seq, callingUid, resolvedUserId); 596 597 // Add them to the global session state map of the current user. 598 userState.sessionStateMap.put(sessionToken, sessionState); 599 600 // Also, add them to the session state map of the current service. 601 serviceState.mSessionTokens.add(sessionToken); 602 603 if (serviceState.mService != null) { 604 createSessionInternalLocked(serviceState.mService, sessionToken, 605 resolvedUserId); 606 } else { 607 updateServiceConnectionLocked(inputId, resolvedUserId); 608 } 609 } 610 } finally { 611 Binder.restoreCallingIdentity(identity); 612 } 613 } 614 615 @Override 616 public void releaseSession(IBinder sessionToken, int userId) { 617 final int callingUid = Binder.getCallingUid(); 618 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 619 userId, "releaseSession"); 620 final long identity = Binder.clearCallingIdentity(); 621 try { 622 synchronized (mLock) { 623 releaseSessionLocked(sessionToken, callingUid, resolvedUserId); 624 } 625 } finally { 626 Binder.restoreCallingIdentity(identity); 627 } 628 } 629 630 @Override 631 public void setSurface(IBinder sessionToken, Surface surface, int userId) { 632 final int callingUid = Binder.getCallingUid(); 633 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 634 userId, "setSurface"); 635 final long identity = Binder.clearCallingIdentity(); 636 try { 637 synchronized (mLock) { 638 try { 639 getSessionLocked(sessionToken, callingUid, resolvedUserId).setSurface( 640 surface); 641 } catch (RemoteException e) { 642 Slog.e(TAG, "error in setSurface", e); 643 } 644 } 645 } finally { 646 if (surface != null) { 647 // surface is not used in TvInputManagerService. 648 surface.release(); 649 } 650 Binder.restoreCallingIdentity(identity); 651 } 652 } 653 654 @Override 655 public void setVolume(IBinder sessionToken, float volume, int userId) { 656 final int callingUid = Binder.getCallingUid(); 657 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 658 userId, "setVolume"); 659 final long identity = Binder.clearCallingIdentity(); 660 try { 661 synchronized (mLock) { 662 try { 663 getSessionLocked(sessionToken, callingUid, resolvedUserId).setVolume( 664 volume); 665 } catch (RemoteException e) { 666 Slog.e(TAG, "error in setVolume", e); 667 } 668 } 669 } finally { 670 Binder.restoreCallingIdentity(identity); 671 } 672 } 673 674 @Override 675 public void tune(IBinder sessionToken, final Uri channelUri, int userId) { 676 final int callingUid = Binder.getCallingUid(); 677 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 678 userId, "tune"); 679 final long identity = Binder.clearCallingIdentity(); 680 try { 681 synchronized (mLock) { 682 try { 683 getSessionLocked(sessionToken, callingUid, resolvedUserId).tune(channelUri); 684 685 long currentTime = System.currentTimeMillis(); 686 long channelId = ContentUris.parseId(channelUri); 687 688 // Close the open log entry first, if any. 689 UserState userState = getUserStateLocked(resolvedUserId); 690 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 691 if (sessionState.mLogUri != null) { 692 SomeArgs args = SomeArgs.obtain(); 693 args.arg1 = sessionState.mLogUri; 694 args.arg2 = currentTime; 695 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args) 696 .sendToTarget(); 697 } 698 699 // Create a log entry and fill it later. 700 ContentValues values = new ContentValues(); 701 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 702 currentTime); 703 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 0); 704 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 705 706 sessionState.mLogUri = mContentResolver.insert( 707 TvContract.WatchedPrograms.CONTENT_URI, values); 708 SomeArgs args = SomeArgs.obtain(); 709 args.arg1 = sessionState.mLogUri; 710 args.arg2 = ContentUris.parseId(channelUri); 711 args.arg3 = currentTime; 712 mLogHandler.obtainMessage(LogHandler.MSG_OPEN_ENTRY, args).sendToTarget(); 713 } catch (RemoteException e) { 714 Slog.e(TAG, "error in tune", e); 715 return; 716 } 717 } 718 } finally { 719 Binder.restoreCallingIdentity(identity); 720 } 721 } 722 723 @Override 724 public void createOverlayView(IBinder sessionToken, IBinder windowToken, Rect frame, 725 int userId) { 726 final int callingUid = Binder.getCallingUid(); 727 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 728 userId, "createOverlayView"); 729 final long identity = Binder.clearCallingIdentity(); 730 try { 731 synchronized (mLock) { 732 try { 733 getSessionLocked(sessionToken, callingUid, resolvedUserId) 734 .createOverlayView(windowToken, frame); 735 } catch (RemoteException e) { 736 Slog.e(TAG, "error in createOverlayView", e); 737 } 738 } 739 } finally { 740 Binder.restoreCallingIdentity(identity); 741 } 742 } 743 744 @Override 745 public void relayoutOverlayView(IBinder sessionToken, Rect frame, int userId) { 746 final int callingUid = Binder.getCallingUid(); 747 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 748 userId, "relayoutOverlayView"); 749 final long identity = Binder.clearCallingIdentity(); 750 try { 751 synchronized (mLock) { 752 try { 753 getSessionLocked(sessionToken, callingUid, resolvedUserId) 754 .relayoutOverlayView(frame); 755 } catch (RemoteException e) { 756 Slog.e(TAG, "error in relayoutOverlayView", e); 757 } 758 } 759 } finally { 760 Binder.restoreCallingIdentity(identity); 761 } 762 } 763 764 @Override 765 public void removeOverlayView(IBinder sessionToken, int userId) { 766 final int callingUid = Binder.getCallingUid(); 767 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 768 userId, "removeOverlayView"); 769 final long identity = Binder.clearCallingIdentity(); 770 try { 771 synchronized (mLock) { 772 try { 773 getSessionLocked(sessionToken, callingUid, resolvedUserId) 774 .removeOverlayView(); 775 } catch (RemoteException e) { 776 Slog.e(TAG, "error in removeOverlayView", e); 777 } 778 } 779 } finally { 780 Binder.restoreCallingIdentity(identity); 781 } 782 } 783 784 @Override 785 public List<TvInputHardwareInfo> getHardwareList() throws RemoteException { 786 if (mContext.checkCallingPermission( 787 android.Manifest.permission.TV_INPUT_HARDWARE) 788 != PackageManager.PERMISSION_GRANTED) { 789 return null; 790 } 791 792 final long identity = Binder.clearCallingIdentity(); 793 try { 794 return mTvInputHardwareManager.getHardwareList(); 795 } finally { 796 Binder.restoreCallingIdentity(identity); 797 } 798 } 799 800 @Override 801 public ITvInputHardware acquireTvInputHardware(int deviceId, 802 ITvInputHardwareCallback callback, int userId) throws RemoteException { 803 if (mContext.checkCallingPermission( 804 android.Manifest.permission.TV_INPUT_HARDWARE) 805 != PackageManager.PERMISSION_GRANTED) { 806 return null; 807 } 808 809 final long identity = Binder.clearCallingIdentity(); 810 final int callingUid = Binder.getCallingUid(); 811 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 812 userId, "acquireTvInputHardware"); 813 try { 814 return mTvInputHardwareManager.acquireHardware( 815 deviceId, callback, callingUid, resolvedUserId); 816 } finally { 817 Binder.restoreCallingIdentity(identity); 818 } 819 } 820 821 @Override 822 public void releaseTvInputHardware(int deviceId, ITvInputHardware hardware, int userId) 823 throws RemoteException { 824 if (mContext.checkCallingPermission( 825 android.Manifest.permission.TV_INPUT_HARDWARE) 826 != PackageManager.PERMISSION_GRANTED) { 827 return; 828 } 829 830 final long identity = Binder.clearCallingIdentity(); 831 final int callingUid = Binder.getCallingUid(); 832 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 833 userId, "releaseTvInputHardware"); 834 try { 835 mTvInputHardwareManager.releaseHardware( 836 deviceId, hardware, callingUid, resolvedUserId); 837 } finally { 838 Binder.restoreCallingIdentity(identity); 839 } 840 } 841 } 842 843 private static final class UserState { 844 // A mapping from the TV input id to its TvInputInfo. 845 private final Map<String, TvInputInfo> inputMap = new HashMap<String,TvInputInfo>(); 846 847 // A mapping from the name of a TV input service to its state. 848 private final Map<String, ServiceState> serviceStateMap = 849 new HashMap<String, ServiceState>(); 850 851 // A mapping from the token of a TV input session to its state. 852 private final Map<IBinder, SessionState> sessionStateMap = 853 new HashMap<IBinder, SessionState>(); 854 } 855 856 private final class ServiceState { 857 // TODO: need to implement DeathRecipient for clients. 858 private final List<IBinder> mClients = new ArrayList<IBinder>(); 859 private final List<IBinder> mSessionTokens = new ArrayList<IBinder>(); 860 private final ServiceConnection mConnection; 861 private final TvInputInfo mTvInputInfo; 862 863 private ITvInputService mService; 864 private ServiceCallback mCallback; 865 private boolean mBound; 866 private boolean mAvailable; 867 private boolean mReconnecting; 868 869 private ServiceState(TvInputInfo inputInfo, int userId) { 870 mTvInputInfo = inputInfo; 871 mConnection = new InputServiceConnection(inputInfo, userId); 872 } 873 } 874 875 private final class SessionState implements IBinder.DeathRecipient { 876 private final String mInputId; 877 private final ITvInputClient mClient; 878 private final int mSeq; 879 private final int mCallingUid; 880 private final int mUserId; 881 private final IBinder mToken; 882 private ITvInputSession mSession; 883 private Uri mLogUri; 884 885 private SessionState(IBinder token, String inputId, ITvInputClient client, int seq, 886 int callingUid, int userId) { 887 mToken = token; 888 mInputId = inputId; 889 mClient = client; 890 mSeq = seq; 891 mCallingUid = callingUid; 892 mUserId = userId; 893 } 894 895 @Override 896 public void binderDied() { 897 synchronized (mLock) { 898 mSession = null; 899 if (mClient != null) { 900 try { 901 mClient.onSessionReleased(mSeq); 902 } catch(RemoteException e) { 903 Slog.e(TAG, "error in onSessionReleased", e); 904 } 905 } 906 removeSessionStateLocked(mToken, mUserId); 907 } 908 } 909 } 910 911 private final class InputServiceConnection implements ServiceConnection { 912 private final TvInputInfo mTvInputInfo; 913 private final int mUserId; 914 915 private InputServiceConnection(TvInputInfo inputInfo, int userId) { 916 mUserId = userId; 917 mTvInputInfo = inputInfo; 918 } 919 920 @Override 921 public void onServiceConnected(ComponentName name, IBinder service) { 922 if (DEBUG) { 923 Slog.d(TAG, "onServiceConnected(inputId=" + mTvInputInfo.getId() + ")"); 924 } 925 synchronized (mLock) { 926 ServiceState serviceState = getServiceStateLocked(mTvInputInfo.getId(), mUserId); 927 serviceState.mService = ITvInputService.Stub.asInterface(service); 928 929 // Register a callback, if we need to. 930 if (!serviceState.mClients.isEmpty() && serviceState.mCallback == null) { 931 serviceState.mCallback = new ServiceCallback(mUserId); 932 try { 933 serviceState.mService.registerCallback(serviceState.mCallback); 934 } catch (RemoteException e) { 935 Slog.e(TAG, "error in registerCallback", e); 936 } 937 } 938 939 // And create sessions, if any. 940 for (IBinder sessionToken : serviceState.mSessionTokens) { 941 createSessionInternalLocked(serviceState.mService, sessionToken, mUserId); 942 } 943 } 944 } 945 946 @Override 947 public void onServiceDisconnected(ComponentName name) { 948 if (DEBUG) { 949 Slog.d(TAG, "onServiceDisconnected(inputId=" + mTvInputInfo.getId() + ")"); 950 } 951 if (!mTvInputInfo.getComponent().equals(name)) { 952 throw new IllegalArgumentException("Mismatched ComponentName: " 953 + mTvInputInfo.getComponent() + " (expected), " + name + " (actual)."); 954 } 955 synchronized (mLock) { 956 UserState userState = getUserStateLocked(mUserId); 957 ServiceState serviceState = userState.serviceStateMap.get(mTvInputInfo.getId()); 958 if (serviceState != null) { 959 serviceState.mReconnecting = true; 960 serviceState.mBound = false; 961 serviceState.mService = null; 962 serviceState.mCallback = null; 963 964 // Send null tokens for not finishing create session events. 965 for (IBinder sessionToken : serviceState.mSessionTokens) { 966 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 967 if (sessionState.mSession == null) { 968 removeSessionStateLocked(sessionToken, sessionState.mUserId); 969 sendSessionTokenToClientLocked(sessionState.mClient, 970 sessionState.mInputId, null, null, sessionState.mSeq, 971 sessionState.mUserId); 972 } 973 } 974 975 if (serviceState.mAvailable) { 976 serviceState.mAvailable = false; 977 broadcastServiceAvailabilityChangedLocked(serviceState); 978 } 979 updateServiceConnectionLocked(mTvInputInfo.getId(), mUserId); 980 } 981 } 982 } 983 } 984 985 private final class ServiceCallback extends ITvInputServiceCallback.Stub { 986 private final int mUserId; 987 988 ServiceCallback(int userId) { 989 mUserId = userId; 990 } 991 992 @Override 993 public void onAvailabilityChanged(String inputId, boolean isAvailable) { 994 if (DEBUG) { 995 Slog.d(TAG, "onAvailabilityChanged(inputId=" + inputId + ", isAvailable=" 996 + isAvailable + ")"); 997 } 998 synchronized (mLock) { 999 ServiceState serviceState = getServiceStateLocked(inputId, mUserId); 1000 if (serviceState.mAvailable != isAvailable) { 1001 serviceState.mAvailable = isAvailable; 1002 broadcastServiceAvailabilityChangedLocked(serviceState); 1003 } 1004 } 1005 } 1006 } 1007 1008 private final class LogHandler extends Handler { 1009 private static final int MSG_OPEN_ENTRY = 1; 1010 private static final int MSG_UPDATE_ENTRY = 2; 1011 private static final int MSG_CLOSE_ENTRY = 3; 1012 1013 public LogHandler(Looper looper) { 1014 super(looper); 1015 } 1016 1017 @Override 1018 public void handleMessage(Message msg) { 1019 switch (msg.what) { 1020 case MSG_OPEN_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 onOpenEntry(uri, channelId, time); 1026 args.recycle(); 1027 return; 1028 } 1029 case MSG_UPDATE_ENTRY: { 1030 SomeArgs args = (SomeArgs) msg.obj; 1031 Uri uri = (Uri) args.arg1; 1032 long channelId = (long) args.arg2; 1033 long time = (long) args.arg3; 1034 onUpdateEntry(uri, channelId, time); 1035 args.recycle(); 1036 return; 1037 } 1038 case MSG_CLOSE_ENTRY: { 1039 SomeArgs args = (SomeArgs) msg.obj; 1040 Uri uri = (Uri) args.arg1; 1041 long time = (long) args.arg2; 1042 onCloseEntry(uri, time); 1043 args.recycle(); 1044 return; 1045 } 1046 default: { 1047 Slog.w(TAG, "Unhandled message code: " + msg.what); 1048 return; 1049 } 1050 } 1051 } 1052 1053 private void onOpenEntry(Uri uri, long channelId, long watchStarttime) { 1054 String[] projection = { 1055 TvContract.Programs.COLUMN_TITLE, 1056 TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS, 1057 TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS, 1058 TvContract.Programs.COLUMN_DESCRIPTION 1059 }; 1060 String selection = TvContract.Programs.COLUMN_CHANNEL_ID + "=? AND " 1061 + TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + "<=? AND " 1062 + TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS + ">?"; 1063 String[] selectionArgs = { 1064 String.valueOf(channelId), 1065 String.valueOf(watchStarttime), 1066 String.valueOf(watchStarttime) 1067 }; 1068 String sortOrder = TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + " ASC"; 1069 Cursor cursor = null; 1070 try { 1071 cursor = mContentResolver.query(TvContract.Programs.CONTENT_URI, projection, 1072 selection, selectionArgs, sortOrder); 1073 if (cursor != null && cursor.moveToNext()) { 1074 ContentValues values = new ContentValues(); 1075 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, cursor.getString(0)); 1076 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1077 cursor.getLong(1)); 1078 long endTime = cursor.getLong(2); 1079 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1080 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, cursor.getString(3)); 1081 mContentResolver.update(uri, values, null, null); 1082 1083 // Schedule an update when the current program ends. 1084 SomeArgs args = SomeArgs.obtain(); 1085 args.arg1 = uri; 1086 args.arg2 = channelId; 1087 args.arg3 = endTime; 1088 Message msg = obtainMessage(LogHandler.MSG_UPDATE_ENTRY, args); 1089 sendMessageDelayed(msg, endTime - System.currentTimeMillis()); 1090 } 1091 } finally { 1092 if (cursor != null) { 1093 cursor.close(); 1094 } 1095 } 1096 } 1097 1098 private void onUpdateEntry(Uri uri, long channelId, long time) { 1099 String[] projection = { 1100 TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1101 TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 1102 TvContract.WatchedPrograms.COLUMN_TITLE, 1103 TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1104 TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, 1105 TvContract.WatchedPrograms.COLUMN_DESCRIPTION 1106 }; 1107 Cursor cursor = null; 1108 try { 1109 cursor = mContentResolver.query(uri, projection, null, null, null); 1110 if (cursor != null && cursor.moveToNext()) { 1111 long watchStartTime = cursor.getLong(0); 1112 long watchEndTime = cursor.getLong(1); 1113 String title = cursor.getString(2); 1114 long startTime = cursor.getLong(3); 1115 long endTime = cursor.getLong(4); 1116 String description = cursor.getString(5); 1117 1118 // Do nothing if the current log entry is already closed. 1119 if (watchEndTime > 0) { 1120 return; 1121 } 1122 1123 // The current program has just ended. Create a (complete) log entry off the 1124 // current entry. 1125 ContentValues values = new ContentValues(); 1126 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1127 watchStartTime); 1128 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, time); 1129 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 1130 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, title); 1131 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, startTime); 1132 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1133 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, description); 1134 mContentResolver.insert(TvContract.WatchedPrograms.CONTENT_URI, values); 1135 } 1136 } finally { 1137 if (cursor != null) { 1138 cursor.close(); 1139 } 1140 } 1141 // Re-open the current log entry with the next program information. 1142 onOpenEntry(uri, channelId, time); 1143 } 1144 1145 private void onCloseEntry(Uri uri, long watchEndTime) { 1146 ContentValues values = new ContentValues(); 1147 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, watchEndTime); 1148 mContentResolver.update(uri, values, null, null); 1149 } 1150 } 1151} 1152