TvInputManagerService.java revision a3be12a236aef0d9c4ff1274075f1e7899d29153
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 onVideoStreamChanged(int width, int height, boolean interlaced) { 354 synchronized (mLock) { 355 if (DEBUG) { 356 Slog.d(TAG, "onVideoStreamChanged(" + width + ", " + height + ")"); 357 } 358 if (sessionState.mSession == null || sessionState.mClient == null) { 359 return; 360 } 361 try { 362 sessionState.mClient.onVideoStreamChanged(width, height, interlaced, 363 sessionState.mSeq); 364 } catch (RemoteException e) { 365 Slog.e(TAG, "error in onVideoStreamChanged"); 366 } 367 } 368 } 369 370 @Override 371 public void onAudioStreamChanged(int channelCount) { 372 synchronized (mLock) { 373 if (DEBUG) { 374 Slog.d(TAG, "onAudioStreamChanged(" + channelCount + ")"); 375 } 376 if (sessionState.mSession == null || sessionState.mClient == null) { 377 return; 378 } 379 try { 380 sessionState.mClient.onAudioStreamChanged(channelCount, sessionState.mSeq); 381 } catch (RemoteException e) { 382 Slog.e(TAG, "error in onAudioStreamChanged"); 383 } 384 } 385 } 386 387 @Override 388 public void onClosedCaptionStreamChanged(boolean hasClosedCaption) { 389 synchronized (mLock) { 390 if (DEBUG) { 391 Slog.d(TAG, "onClosedCaptionStreamChanged(" + hasClosedCaption + ")"); 392 } 393 if (sessionState.mSession == null || sessionState.mClient == null) { 394 return; 395 } 396 try { 397 sessionState.mClient.onClosedCaptionStreamChanged(hasClosedCaption, 398 sessionState.mSeq); 399 } catch (RemoteException e) { 400 Slog.e(TAG, "error in onClosedCaptionStreamChanged"); 401 } 402 } 403 } 404 405 @Override 406 public void onSessionEvent(String eventType, Bundle eventArgs) { 407 synchronized (mLock) { 408 if (DEBUG) { 409 Slog.d(TAG, "onEvent(what=" + eventType + ", data=" + eventArgs + ")"); 410 } 411 if (sessionState.mSession == null || sessionState.mClient == null) { 412 return; 413 } 414 try { 415 sessionState.mClient.onSessionEvent(eventType, eventArgs, 416 sessionState.mSeq); 417 } catch (RemoteException e) { 418 Slog.e(TAG, "error in onSessionEvent"); 419 } 420 } 421 } 422 }; 423 424 // Create a session. When failed, send a null token immediately. 425 try { 426 service.createSession(channels[1], callback); 427 } catch (RemoteException e) { 428 Slog.e(TAG, "error in createSession", e); 429 removeSessionStateLocked(sessionToken, userId); 430 sendSessionTokenToClientLocked(sessionState.mClient, sessionState.mInputId, null, null, 431 sessionState.mSeq, userId); 432 } 433 channels[1].dispose(); 434 } 435 436 private void sendSessionTokenToClientLocked(ITvInputClient client, String inputId, 437 IBinder sessionToken, InputChannel channel, int seq, int userId) { 438 try { 439 client.onSessionCreated(inputId, sessionToken, channel, seq); 440 } catch (RemoteException exception) { 441 Slog.e(TAG, "error in onSessionCreated", exception); 442 } 443 } 444 445 private void releaseSessionLocked(IBinder sessionToken, int callingUid, int userId) { 446 SessionState sessionState = getSessionStateLocked(sessionToken, callingUid, userId); 447 if (sessionState.mSession != null) { 448 try { 449 sessionState.mSession.release(); 450 } catch (RemoteException e) { 451 Slog.w(TAG, "session is already disapeared", e); 452 } 453 sessionState.mSession = null; 454 } 455 removeSessionStateLocked(sessionToken, userId); 456 } 457 458 private void removeSessionStateLocked(IBinder sessionToken, int userId) { 459 // Remove the session state from the global session state map of the current user. 460 UserState userState = getUserStateLocked(userId); 461 SessionState sessionState = userState.sessionStateMap.remove(sessionToken); 462 463 // Close the open log entry, if any. 464 if (sessionState.mLogUri != null) { 465 SomeArgs args = SomeArgs.obtain(); 466 args.arg1 = sessionState.mLogUri; 467 args.arg2 = System.currentTimeMillis(); 468 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args).sendToTarget(); 469 } 470 471 // Also remove the session token from the session token list of the current service. 472 ServiceState serviceState = userState.serviceStateMap.get(sessionState.mInputId); 473 if (serviceState != null) { 474 serviceState.mSessionTokens.remove(sessionToken); 475 } 476 updateServiceConnectionLocked(sessionState.mInputId, userId); 477 } 478 479 private void broadcastServiceAvailabilityChangedLocked(ServiceState serviceState) { 480 for (IBinder iBinder : serviceState.mClients) { 481 ITvInputClient client = ITvInputClient.Stub.asInterface(iBinder); 482 try { 483 client.onAvailabilityChanged( 484 serviceState.mTvInputInfo.getId(), serviceState.mAvailable); 485 } catch (RemoteException e) { 486 Slog.e(TAG, "error in onAvailabilityChanged", e); 487 } 488 } 489 } 490 491 private final class BinderService extends ITvInputManager.Stub { 492 @Override 493 public List<TvInputInfo> getTvInputList(int userId) { 494 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 495 Binder.getCallingUid(), userId, "getTvInputList"); 496 final long identity = Binder.clearCallingIdentity(); 497 try { 498 synchronized (mLock) { 499 UserState userState = getUserStateLocked(resolvedUserId); 500 return new ArrayList<TvInputInfo>(userState.inputMap.values()); 501 } 502 } finally { 503 Binder.restoreCallingIdentity(identity); 504 } 505 } 506 507 @Override 508 public boolean getAvailability(final ITvInputClient client, final String inputId, 509 int userId) { 510 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 511 Binder.getCallingUid(), userId, "getAvailability"); 512 final long identity = Binder.clearCallingIdentity(); 513 try { 514 synchronized (mLock) { 515 UserState userState = getUserStateLocked(resolvedUserId); 516 ServiceState serviceState = userState.serviceStateMap.get(inputId); 517 if (serviceState != null) { 518 // We already know the status of this input service. Return the cached 519 // status. 520 return serviceState.mAvailable; 521 } 522 } 523 } finally { 524 Binder.restoreCallingIdentity(identity); 525 } 526 return false; 527 } 528 529 @Override 530 public void registerCallback(final ITvInputClient client, final String inputId, 531 int userId) { 532 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 533 Binder.getCallingUid(), userId, "registerCallback"); 534 final long identity = Binder.clearCallingIdentity(); 535 try { 536 synchronized (mLock) { 537 // Create a new service callback and add it to the callback map of the current 538 // service. 539 UserState userState = getUserStateLocked(resolvedUserId); 540 ServiceState serviceState = userState.serviceStateMap.get(inputId); 541 if (serviceState == null) { 542 serviceState = new ServiceState( 543 userState.inputMap.get(inputId), resolvedUserId); 544 userState.serviceStateMap.put(inputId, serviceState); 545 } 546 IBinder iBinder = client.asBinder(); 547 if (!serviceState.mClients.contains(iBinder)) { 548 serviceState.mClients.add(iBinder); 549 } 550 if (serviceState.mService != null) { 551 if (serviceState.mCallback != null) { 552 // We already handled. 553 return; 554 } 555 serviceState.mCallback = new ServiceCallback(resolvedUserId); 556 try { 557 serviceState.mService.registerCallback(serviceState.mCallback); 558 } catch (RemoteException e) { 559 Slog.e(TAG, "error in registerCallback", e); 560 } 561 } else { 562 updateServiceConnectionLocked(inputId, resolvedUserId); 563 } 564 } 565 } finally { 566 Binder.restoreCallingIdentity(identity); 567 } 568 } 569 570 @Override 571 public void unregisterCallback(ITvInputClient client, String inputId, int userId) { 572 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), 573 Binder.getCallingUid(), userId, "unregisterCallback"); 574 final long identity = Binder.clearCallingIdentity(); 575 try { 576 synchronized (mLock) { 577 UserState userState = getUserStateLocked(resolvedUserId); 578 ServiceState serviceState = userState.serviceStateMap.get(inputId); 579 if (serviceState == null) { 580 return; 581 } 582 583 // Remove this client from the client list and unregister the callback. 584 serviceState.mClients.remove(client.asBinder()); 585 if (!serviceState.mClients.isEmpty()) { 586 // We have other clients who want to keep the callback. Do this later. 587 return; 588 } 589 if (serviceState.mService == null || serviceState.mCallback == null) { 590 return; 591 } 592 try { 593 serviceState.mService.unregisterCallback(serviceState.mCallback); 594 } catch (RemoteException e) { 595 Slog.e(TAG, "error in unregisterCallback", e); 596 } finally { 597 serviceState.mCallback = null; 598 updateServiceConnectionLocked(inputId, resolvedUserId); 599 } 600 } 601 } finally { 602 Binder.restoreCallingIdentity(identity); 603 } 604 } 605 606 @Override 607 public void createSession(final ITvInputClient client, final String inputId, 608 int seq, int userId) { 609 final int callingUid = Binder.getCallingUid(); 610 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 611 userId, "createSession"); 612 final long identity = Binder.clearCallingIdentity(); 613 try { 614 synchronized (mLock) { 615 UserState userState = getUserStateLocked(resolvedUserId); 616 ServiceState serviceState = userState.serviceStateMap.get(inputId); 617 if (serviceState == null) { 618 serviceState = new ServiceState( 619 userState.inputMap.get(inputId), resolvedUserId); 620 userState.serviceStateMap.put(inputId, serviceState); 621 } 622 // Send a null token immediately while reconnecting. 623 if (serviceState.mReconnecting == true) { 624 sendSessionTokenToClientLocked(client, inputId, null, null, seq, userId); 625 return; 626 } 627 628 // Create a new session token and a session state. 629 IBinder sessionToken = new Binder(); 630 SessionState sessionState = new SessionState( 631 sessionToken, inputId, client, seq, callingUid, resolvedUserId); 632 633 // Add them to the global session state map of the current user. 634 userState.sessionStateMap.put(sessionToken, sessionState); 635 636 // Also, add them to the session state map of the current service. 637 serviceState.mSessionTokens.add(sessionToken); 638 639 if (serviceState.mService != null) { 640 createSessionInternalLocked(serviceState.mService, sessionToken, 641 resolvedUserId); 642 } else { 643 updateServiceConnectionLocked(inputId, resolvedUserId); 644 } 645 } 646 } finally { 647 Binder.restoreCallingIdentity(identity); 648 } 649 } 650 651 @Override 652 public void releaseSession(IBinder sessionToken, int userId) { 653 final int callingUid = Binder.getCallingUid(); 654 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 655 userId, "releaseSession"); 656 final long identity = Binder.clearCallingIdentity(); 657 try { 658 synchronized (mLock) { 659 releaseSessionLocked(sessionToken, callingUid, resolvedUserId); 660 } 661 } finally { 662 Binder.restoreCallingIdentity(identity); 663 } 664 } 665 666 @Override 667 public void setSurface(IBinder sessionToken, Surface surface, int userId) { 668 final int callingUid = Binder.getCallingUid(); 669 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 670 userId, "setSurface"); 671 final long identity = Binder.clearCallingIdentity(); 672 try { 673 synchronized (mLock) { 674 try { 675 getSessionLocked(sessionToken, callingUid, resolvedUserId).setSurface( 676 surface); 677 } catch (RemoteException e) { 678 Slog.e(TAG, "error in setSurface", e); 679 } 680 } 681 } finally { 682 if (surface != null) { 683 // surface is not used in TvInputManagerService. 684 surface.release(); 685 } 686 Binder.restoreCallingIdentity(identity); 687 } 688 } 689 690 @Override 691 public void setVolume(IBinder sessionToken, float volume, int userId) { 692 final int callingUid = Binder.getCallingUid(); 693 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 694 userId, "setVolume"); 695 final long identity = Binder.clearCallingIdentity(); 696 try { 697 synchronized (mLock) { 698 try { 699 getSessionLocked(sessionToken, callingUid, resolvedUserId).setVolume( 700 volume); 701 } catch (RemoteException e) { 702 Slog.e(TAG, "error in setVolume", e); 703 } 704 } 705 } finally { 706 Binder.restoreCallingIdentity(identity); 707 } 708 } 709 710 @Override 711 public void tune(IBinder sessionToken, final Uri channelUri, int userId) { 712 final int callingUid = Binder.getCallingUid(); 713 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 714 userId, "tune"); 715 final long identity = Binder.clearCallingIdentity(); 716 try { 717 synchronized (mLock) { 718 try { 719 getSessionLocked(sessionToken, callingUid, resolvedUserId).tune(channelUri); 720 721 long currentTime = System.currentTimeMillis(); 722 long channelId = ContentUris.parseId(channelUri); 723 724 // Close the open log entry first, if any. 725 UserState userState = getUserStateLocked(resolvedUserId); 726 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 727 if (sessionState.mLogUri != null) { 728 SomeArgs args = SomeArgs.obtain(); 729 args.arg1 = sessionState.mLogUri; 730 args.arg2 = currentTime; 731 mLogHandler.obtainMessage(LogHandler.MSG_CLOSE_ENTRY, args) 732 .sendToTarget(); 733 } 734 735 // Create a log entry and fill it later. 736 ContentValues values = new ContentValues(); 737 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 738 currentTime); 739 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 0); 740 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 741 742 sessionState.mLogUri = mContentResolver.insert( 743 TvContract.WatchedPrograms.CONTENT_URI, values); 744 SomeArgs args = SomeArgs.obtain(); 745 args.arg1 = sessionState.mLogUri; 746 args.arg2 = ContentUris.parseId(channelUri); 747 args.arg3 = currentTime; 748 mLogHandler.obtainMessage(LogHandler.MSG_OPEN_ENTRY, args).sendToTarget(); 749 } catch (RemoteException e) { 750 Slog.e(TAG, "error in tune", e); 751 return; 752 } 753 } 754 } finally { 755 Binder.restoreCallingIdentity(identity); 756 } 757 } 758 759 @Override 760 public void createOverlayView(IBinder sessionToken, IBinder windowToken, Rect frame, 761 int userId) { 762 final int callingUid = Binder.getCallingUid(); 763 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 764 userId, "createOverlayView"); 765 final long identity = Binder.clearCallingIdentity(); 766 try { 767 synchronized (mLock) { 768 try { 769 getSessionLocked(sessionToken, callingUid, resolvedUserId) 770 .createOverlayView(windowToken, frame); 771 } catch (RemoteException e) { 772 Slog.e(TAG, "error in createOverlayView", e); 773 } 774 } 775 } finally { 776 Binder.restoreCallingIdentity(identity); 777 } 778 } 779 780 @Override 781 public void relayoutOverlayView(IBinder sessionToken, Rect frame, int userId) { 782 final int callingUid = Binder.getCallingUid(); 783 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 784 userId, "relayoutOverlayView"); 785 final long identity = Binder.clearCallingIdentity(); 786 try { 787 synchronized (mLock) { 788 try { 789 getSessionLocked(sessionToken, callingUid, resolvedUserId) 790 .relayoutOverlayView(frame); 791 } catch (RemoteException e) { 792 Slog.e(TAG, "error in relayoutOverlayView", e); 793 } 794 } 795 } finally { 796 Binder.restoreCallingIdentity(identity); 797 } 798 } 799 800 @Override 801 public void removeOverlayView(IBinder sessionToken, int userId) { 802 final int callingUid = Binder.getCallingUid(); 803 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 804 userId, "removeOverlayView"); 805 final long identity = Binder.clearCallingIdentity(); 806 try { 807 synchronized (mLock) { 808 try { 809 getSessionLocked(sessionToken, callingUid, resolvedUserId) 810 .removeOverlayView(); 811 } catch (RemoteException e) { 812 Slog.e(TAG, "error in removeOverlayView", e); 813 } 814 } 815 } finally { 816 Binder.restoreCallingIdentity(identity); 817 } 818 } 819 820 @Override 821 public List<TvInputHardwareInfo> getHardwareList() throws RemoteException { 822 if (mContext.checkCallingPermission( 823 android.Manifest.permission.TV_INPUT_HARDWARE) 824 != PackageManager.PERMISSION_GRANTED) { 825 return null; 826 } 827 828 final long identity = Binder.clearCallingIdentity(); 829 try { 830 return mTvInputHardwareManager.getHardwareList(); 831 } finally { 832 Binder.restoreCallingIdentity(identity); 833 } 834 } 835 836 @Override 837 public ITvInputHardware acquireTvInputHardware(int deviceId, 838 ITvInputHardwareCallback callback, int userId) throws RemoteException { 839 if (mContext.checkCallingPermission( 840 android.Manifest.permission.TV_INPUT_HARDWARE) 841 != PackageManager.PERMISSION_GRANTED) { 842 return null; 843 } 844 845 final long identity = Binder.clearCallingIdentity(); 846 final int callingUid = Binder.getCallingUid(); 847 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 848 userId, "acquireTvInputHardware"); 849 try { 850 return mTvInputHardwareManager.acquireHardware( 851 deviceId, callback, callingUid, resolvedUserId); 852 } finally { 853 Binder.restoreCallingIdentity(identity); 854 } 855 } 856 857 @Override 858 public void releaseTvInputHardware(int deviceId, ITvInputHardware hardware, int userId) 859 throws RemoteException { 860 if (mContext.checkCallingPermission( 861 android.Manifest.permission.TV_INPUT_HARDWARE) 862 != PackageManager.PERMISSION_GRANTED) { 863 return; 864 } 865 866 final long identity = Binder.clearCallingIdentity(); 867 final int callingUid = Binder.getCallingUid(); 868 final int resolvedUserId = resolveCallingUserId(Binder.getCallingPid(), callingUid, 869 userId, "releaseTvInputHardware"); 870 try { 871 mTvInputHardwareManager.releaseHardware( 872 deviceId, hardware, callingUid, resolvedUserId); 873 } finally { 874 Binder.restoreCallingIdentity(identity); 875 } 876 } 877 } 878 879 private static final class UserState { 880 // A mapping from the TV input id to its TvInputInfo. 881 private final Map<String, TvInputInfo> inputMap = new HashMap<String,TvInputInfo>(); 882 883 // A mapping from the name of a TV input service to its state. 884 private final Map<String, ServiceState> serviceStateMap = 885 new HashMap<String, ServiceState>(); 886 887 // A mapping from the token of a TV input session to its state. 888 private final Map<IBinder, SessionState> sessionStateMap = 889 new HashMap<IBinder, SessionState>(); 890 } 891 892 private final class ServiceState { 893 // TODO: need to implement DeathRecipient for clients. 894 private final List<IBinder> mClients = new ArrayList<IBinder>(); 895 private final List<IBinder> mSessionTokens = new ArrayList<IBinder>(); 896 private final ServiceConnection mConnection; 897 private final TvInputInfo mTvInputInfo; 898 899 private ITvInputService mService; 900 private ServiceCallback mCallback; 901 private boolean mBound; 902 private boolean mAvailable; 903 private boolean mReconnecting; 904 905 private ServiceState(TvInputInfo inputInfo, int userId) { 906 mTvInputInfo = inputInfo; 907 mConnection = new InputServiceConnection(inputInfo, userId); 908 } 909 } 910 911 private final class SessionState implements IBinder.DeathRecipient { 912 private final String mInputId; 913 private final ITvInputClient mClient; 914 private final int mSeq; 915 private final int mCallingUid; 916 private final int mUserId; 917 private final IBinder mToken; 918 private ITvInputSession mSession; 919 private Uri mLogUri; 920 921 private SessionState(IBinder token, String inputId, ITvInputClient client, int seq, 922 int callingUid, int userId) { 923 mToken = token; 924 mInputId = inputId; 925 mClient = client; 926 mSeq = seq; 927 mCallingUid = callingUid; 928 mUserId = userId; 929 } 930 931 @Override 932 public void binderDied() { 933 synchronized (mLock) { 934 mSession = null; 935 if (mClient != null) { 936 try { 937 mClient.onSessionReleased(mSeq); 938 } catch(RemoteException e) { 939 Slog.e(TAG, "error in onSessionReleased", e); 940 } 941 } 942 removeSessionStateLocked(mToken, mUserId); 943 } 944 } 945 } 946 947 private final class InputServiceConnection implements ServiceConnection { 948 private final TvInputInfo mTvInputInfo; 949 private final int mUserId; 950 951 private InputServiceConnection(TvInputInfo inputInfo, int userId) { 952 mUserId = userId; 953 mTvInputInfo = inputInfo; 954 } 955 956 @Override 957 public void onServiceConnected(ComponentName name, IBinder service) { 958 if (DEBUG) { 959 Slog.d(TAG, "onServiceConnected(inputId=" + mTvInputInfo.getId() + ")"); 960 } 961 synchronized (mLock) { 962 ServiceState serviceState = getServiceStateLocked(mTvInputInfo.getId(), mUserId); 963 serviceState.mService = ITvInputService.Stub.asInterface(service); 964 965 // Register a callback, if we need to. 966 if (!serviceState.mClients.isEmpty() && serviceState.mCallback == null) { 967 serviceState.mCallback = new ServiceCallback(mUserId); 968 try { 969 serviceState.mService.registerCallback(serviceState.mCallback); 970 } catch (RemoteException e) { 971 Slog.e(TAG, "error in registerCallback", e); 972 } 973 } 974 975 // And create sessions, if any. 976 for (IBinder sessionToken : serviceState.mSessionTokens) { 977 createSessionInternalLocked(serviceState.mService, sessionToken, mUserId); 978 } 979 } 980 } 981 982 @Override 983 public void onServiceDisconnected(ComponentName name) { 984 if (DEBUG) { 985 Slog.d(TAG, "onServiceDisconnected(inputId=" + mTvInputInfo.getId() + ")"); 986 } 987 if (!mTvInputInfo.getComponent().equals(name)) { 988 throw new IllegalArgumentException("Mismatched ComponentName: " 989 + mTvInputInfo.getComponent() + " (expected), " + name + " (actual)."); 990 } 991 synchronized (mLock) { 992 UserState userState = getUserStateLocked(mUserId); 993 ServiceState serviceState = userState.serviceStateMap.get(mTvInputInfo.getId()); 994 if (serviceState != null) { 995 serviceState.mReconnecting = true; 996 serviceState.mBound = false; 997 serviceState.mService = null; 998 serviceState.mCallback = null; 999 1000 // Send null tokens for not finishing create session events. 1001 for (IBinder sessionToken : serviceState.mSessionTokens) { 1002 SessionState sessionState = userState.sessionStateMap.get(sessionToken); 1003 if (sessionState.mSession == null) { 1004 removeSessionStateLocked(sessionToken, sessionState.mUserId); 1005 sendSessionTokenToClientLocked(sessionState.mClient, 1006 sessionState.mInputId, null, null, sessionState.mSeq, 1007 sessionState.mUserId); 1008 } 1009 } 1010 1011 if (serviceState.mAvailable) { 1012 serviceState.mAvailable = false; 1013 broadcastServiceAvailabilityChangedLocked(serviceState); 1014 } 1015 updateServiceConnectionLocked(mTvInputInfo.getId(), mUserId); 1016 } 1017 } 1018 } 1019 } 1020 1021 private final class ServiceCallback extends ITvInputServiceCallback.Stub { 1022 private final int mUserId; 1023 1024 ServiceCallback(int userId) { 1025 mUserId = userId; 1026 } 1027 1028 @Override 1029 public void onAvailabilityChanged(String inputId, boolean isAvailable) { 1030 if (DEBUG) { 1031 Slog.d(TAG, "onAvailabilityChanged(inputId=" + inputId + ", isAvailable=" 1032 + isAvailable + ")"); 1033 } 1034 synchronized (mLock) { 1035 ServiceState serviceState = getServiceStateLocked(inputId, mUserId); 1036 if (serviceState.mAvailable != isAvailable) { 1037 serviceState.mAvailable = isAvailable; 1038 broadcastServiceAvailabilityChangedLocked(serviceState); 1039 } 1040 } 1041 } 1042 } 1043 1044 private final class LogHandler extends Handler { 1045 private static final int MSG_OPEN_ENTRY = 1; 1046 private static final int MSG_UPDATE_ENTRY = 2; 1047 private static final int MSG_CLOSE_ENTRY = 3; 1048 1049 public LogHandler(Looper looper) { 1050 super(looper); 1051 } 1052 1053 @Override 1054 public void handleMessage(Message msg) { 1055 switch (msg.what) { 1056 case MSG_OPEN_ENTRY: { 1057 SomeArgs args = (SomeArgs) msg.obj; 1058 Uri uri = (Uri) args.arg1; 1059 long channelId = (long) args.arg2; 1060 long time = (long) args.arg3; 1061 onOpenEntry(uri, channelId, time); 1062 args.recycle(); 1063 return; 1064 } 1065 case MSG_UPDATE_ENTRY: { 1066 SomeArgs args = (SomeArgs) msg.obj; 1067 Uri uri = (Uri) args.arg1; 1068 long channelId = (long) args.arg2; 1069 long time = (long) args.arg3; 1070 onUpdateEntry(uri, channelId, time); 1071 args.recycle(); 1072 return; 1073 } 1074 case MSG_CLOSE_ENTRY: { 1075 SomeArgs args = (SomeArgs) msg.obj; 1076 Uri uri = (Uri) args.arg1; 1077 long time = (long) args.arg2; 1078 onCloseEntry(uri, time); 1079 args.recycle(); 1080 return; 1081 } 1082 default: { 1083 Slog.w(TAG, "Unhandled message code: " + msg.what); 1084 return; 1085 } 1086 } 1087 } 1088 1089 private void onOpenEntry(Uri uri, long channelId, long watchStarttime) { 1090 String[] projection = { 1091 TvContract.Programs.COLUMN_TITLE, 1092 TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS, 1093 TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS, 1094 TvContract.Programs.COLUMN_DESCRIPTION 1095 }; 1096 String selection = TvContract.Programs.COLUMN_CHANNEL_ID + "=? AND " 1097 + TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + "<=? AND " 1098 + TvContract.Programs.COLUMN_END_TIME_UTC_MILLIS + ">?"; 1099 String[] selectionArgs = { 1100 String.valueOf(channelId), 1101 String.valueOf(watchStarttime), 1102 String.valueOf(watchStarttime) 1103 }; 1104 String sortOrder = TvContract.Programs.COLUMN_START_TIME_UTC_MILLIS + " ASC"; 1105 Cursor cursor = null; 1106 try { 1107 cursor = mContentResolver.query(TvContract.Programs.CONTENT_URI, projection, 1108 selection, selectionArgs, sortOrder); 1109 if (cursor != null && cursor.moveToNext()) { 1110 ContentValues values = new ContentValues(); 1111 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, cursor.getString(0)); 1112 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1113 cursor.getLong(1)); 1114 long endTime = cursor.getLong(2); 1115 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1116 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, cursor.getString(3)); 1117 mContentResolver.update(uri, values, null, null); 1118 1119 // Schedule an update when the current program ends. 1120 SomeArgs args = SomeArgs.obtain(); 1121 args.arg1 = uri; 1122 args.arg2 = channelId; 1123 args.arg3 = endTime; 1124 Message msg = obtainMessage(LogHandler.MSG_UPDATE_ENTRY, args); 1125 sendMessageDelayed(msg, endTime - System.currentTimeMillis()); 1126 } 1127 } finally { 1128 if (cursor != null) { 1129 cursor.close(); 1130 } 1131 } 1132 } 1133 1134 private void onUpdateEntry(Uri uri, long channelId, long time) { 1135 String[] projection = { 1136 TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1137 TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, 1138 TvContract.WatchedPrograms.COLUMN_TITLE, 1139 TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, 1140 TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, 1141 TvContract.WatchedPrograms.COLUMN_DESCRIPTION 1142 }; 1143 Cursor cursor = null; 1144 try { 1145 cursor = mContentResolver.query(uri, projection, null, null, null); 1146 if (cursor != null && cursor.moveToNext()) { 1147 long watchStartTime = cursor.getLong(0); 1148 long watchEndTime = cursor.getLong(1); 1149 String title = cursor.getString(2); 1150 long startTime = cursor.getLong(3); 1151 long endTime = cursor.getLong(4); 1152 String description = cursor.getString(5); 1153 1154 // Do nothing if the current log entry is already closed. 1155 if (watchEndTime > 0) { 1156 return; 1157 } 1158 1159 // The current program has just ended. Create a (complete) log entry off the 1160 // current entry. 1161 ContentValues values = new ContentValues(); 1162 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_START_TIME_UTC_MILLIS, 1163 watchStartTime); 1164 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, time); 1165 values.put(TvContract.WatchedPrograms.COLUMN_CHANNEL_ID, channelId); 1166 values.put(TvContract.WatchedPrograms.COLUMN_TITLE, title); 1167 values.put(TvContract.WatchedPrograms.COLUMN_START_TIME_UTC_MILLIS, startTime); 1168 values.put(TvContract.WatchedPrograms.COLUMN_END_TIME_UTC_MILLIS, endTime); 1169 values.put(TvContract.WatchedPrograms.COLUMN_DESCRIPTION, description); 1170 mContentResolver.insert(TvContract.WatchedPrograms.CONTENT_URI, values); 1171 } 1172 } finally { 1173 if (cursor != null) { 1174 cursor.close(); 1175 } 1176 } 1177 // Re-open the current log entry with the next program information. 1178 onOpenEntry(uri, channelId, time); 1179 } 1180 1181 private void onCloseEntry(Uri uri, long watchEndTime) { 1182 ContentValues values = new ContentValues(); 1183 values.put(TvContract.WatchedPrograms.COLUMN_WATCH_END_TIME_UTC_MILLIS, watchEndTime); 1184 mContentResolver.update(uri, values, null, null); 1185 } 1186 } 1187} 1188