TvInputHardwareManager.java revision 4f9f57cede3de2e2aa3045e04b485b176ab22dbd
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 static android.media.tv.TvInputManager.INPUT_STATE_CONNECTED; 20import static android.media.tv.TvInputManager.INPUT_STATE_DISCONNECTED; 21 22import android.content.Context; 23import android.hardware.hdmi.HdmiCecDeviceInfo; 24import android.hardware.hdmi.HdmiHotplugEvent; 25import android.hardware.hdmi.IHdmiControlService; 26import android.hardware.hdmi.IHdmiDeviceEventListener; 27import android.hardware.hdmi.IHdmiHotplugEventListener; 28import android.hardware.hdmi.IHdmiInputChangeListener; 29import android.media.AudioDevicePort; 30import android.media.AudioManager; 31import android.media.AudioPatch; 32import android.media.AudioPort; 33import android.media.AudioPortConfig; 34import android.media.tv.ITvInputHardware; 35import android.media.tv.ITvInputHardwareCallback; 36import android.media.tv.TvInputHardwareInfo; 37import android.media.tv.TvInputInfo; 38import android.media.tv.TvStreamConfig; 39import android.os.Handler; 40import android.os.IBinder; 41import android.os.Looper; 42import android.os.Message; 43import android.os.RemoteException; 44import android.os.ServiceManager; 45import android.util.ArrayMap; 46import android.util.Slog; 47import android.util.SparseArray; 48import android.util.SparseBooleanArray; 49import android.view.KeyEvent; 50import android.view.Surface; 51 52import com.android.server.SystemService; 53 54import java.util.ArrayList; 55import java.util.Collections; 56import java.util.HashSet; 57import java.util.List; 58import java.util.Map; 59import java.util.Set; 60 61/** 62 * A helper class for TvInputManagerService to handle TV input hardware. 63 * 64 * This class does a basic connection management and forwarding calls to TvInputHal which eventually 65 * calls to tv_input HAL module. 66 * 67 * @hide 68 */ 69class TvInputHardwareManager implements TvInputHal.Callback { 70 private static final String TAG = TvInputHardwareManager.class.getSimpleName(); 71 72 private final Context mContext; 73 private final Listener mListener; 74 private final TvInputHal mHal = new TvInputHal(this); 75 private final SparseArray<Connection> mConnections = new SparseArray<Connection>(); 76 private final List<TvInputHardwareInfo> mInfoList = new ArrayList<TvInputHardwareInfo>(); 77 /* A map from a device ID to the matching TV input ID. */ 78 private final SparseArray<String> mHardwareInputIdMap = new SparseArray<String>(); 79 /* A map from a HDMI logical address to the matching TV input ID. */ 80 private final SparseArray<String> mHdmiCecInputIdMap = new SparseArray<String>(); 81 private final Map<String, TvInputInfo> mInputMap = new ArrayMap<String, TvInputInfo>(); 82 83 private final AudioManager mAudioManager; 84 private IHdmiControlService mHdmiControlService; 85 private final IHdmiHotplugEventListener mHdmiHotplugEventListener = 86 new HdmiHotplugEventListener(); 87 private final IHdmiDeviceEventListener mHdmiDeviceEventListener = new HdmiDeviceEventListener(); 88 private final IHdmiInputChangeListener mHdmiInputChangeListener = new HdmiInputChangeListener(); 89 private final Set<Integer> mActiveHdmiSources = new HashSet<Integer>(); 90 // TODO: Should handle INACTIVE case. 91 private final SparseBooleanArray mHdmiStateMap = new SparseBooleanArray(); 92 93 // Calls to mListener should happen here. 94 private final Handler mHandler = new ListenerHandler(); 95 96 private final Object mLock = new Object(); 97 98 public TvInputHardwareManager(Context context, Listener listener) { 99 mContext = context; 100 mListener = listener; 101 mAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); 102 mHal.init(); 103 } 104 105 public void onBootPhase(int phase) { 106 if (phase == SystemService.PHASE_SYSTEM_SERVICES_READY) { 107 mHdmiControlService = IHdmiControlService.Stub.asInterface(ServiceManager.getService( 108 Context.HDMI_CONTROL_SERVICE)); 109 if (mHdmiControlService != null) { 110 try { 111 mHdmiControlService.addHotplugEventListener(mHdmiHotplugEventListener); 112 mHdmiControlService.addDeviceEventListener(mHdmiDeviceEventListener); 113 mHdmiControlService.setInputChangeListener(mHdmiInputChangeListener); 114 } catch (RemoteException e) { 115 Slog.w(TAG, "Error registering listeners to HdmiControlService:", e); 116 } 117 } 118 } 119 } 120 121 @Override 122 public void onDeviceAvailable(TvInputHardwareInfo info, TvStreamConfig[] configs) { 123 synchronized (mLock) { 124 Connection connection = new Connection(info); 125 connection.updateConfigsLocked(configs); 126 mConnections.put(info.getDeviceId(), connection); 127 buildInfoListLocked(); 128 mHandler.obtainMessage( 129 ListenerHandler.HARDWARE_DEVICE_ADDED, 0, 0, info).sendToTarget(); 130 } 131 } 132 133 private void buildInfoListLocked() { 134 mInfoList.clear(); 135 for (int i = 0; i < mConnections.size(); ++i) { 136 mInfoList.add(mConnections.valueAt(i).getHardwareInfoLocked()); 137 } 138 } 139 140 @Override 141 public void onDeviceUnavailable(int deviceId) { 142 synchronized (mLock) { 143 Connection connection = mConnections.get(deviceId); 144 if (connection == null) { 145 Slog.e(TAG, "onDeviceUnavailable: Cannot find a connection with " + deviceId); 146 return; 147 } 148 connection.resetLocked(null, null, null, null, null); 149 mConnections.remove(deviceId); 150 buildInfoListLocked(); 151 TvInputHardwareInfo info = connection.getHardwareInfoLocked(); 152 mHandler.obtainMessage( 153 ListenerHandler.HARDWARE_DEVICE_REMOVED, 0, 0, info).sendToTarget(); 154 } 155 } 156 157 @Override 158 public void onStreamConfigurationChanged(int deviceId, TvStreamConfig[] configs) { 159 synchronized (mLock) { 160 Connection connection = mConnections.get(deviceId); 161 if (connection == null) { 162 Slog.e(TAG, "StreamConfigurationChanged: Cannot find a connection with " 163 + deviceId); 164 return; 165 } 166 connection.updateConfigsLocked(configs); 167 try { 168 connection.getCallbackLocked().onStreamConfigChanged(configs); 169 } catch (RemoteException e) { 170 Slog.e(TAG, "error in onStreamConfigurationChanged", e); 171 } 172 } 173 } 174 175 public List<TvInputHardwareInfo> getHardwareList() { 176 synchronized (mLock) { 177 return mInfoList; 178 } 179 } 180 181 public List<HdmiCecDeviceInfo> getHdmiCecInputDeviceList() { 182 if (mHdmiControlService != null) { 183 try { 184 return mHdmiControlService.getInputDevices(); 185 } catch (RemoteException e) { 186 Slog.e(TAG, "error in getHdmiCecInputDeviceList", e); 187 } 188 } 189 return Collections.emptyList(); 190 } 191 192 private boolean checkUidChangedLocked( 193 Connection connection, int callingUid, int resolvedUserId) { 194 Integer connectionCallingUid = connection.getCallingUidLocked(); 195 Integer connectionResolvedUserId = connection.getResolvedUserIdLocked(); 196 if (connectionCallingUid == null || connectionResolvedUserId == null) { 197 return true; 198 } 199 if (connectionCallingUid != callingUid || connectionResolvedUserId != resolvedUserId) { 200 return true; 201 } 202 return false; 203 } 204 205 private int convertConnectedToState(boolean connected) { 206 if (connected) { 207 return INPUT_STATE_CONNECTED; 208 } else { 209 return INPUT_STATE_DISCONNECTED; 210 } 211 } 212 213 public void addHardwareTvInput(int deviceId, TvInputInfo info) { 214 if (info.getType() == TvInputInfo.TYPE_VIRTUAL) { 215 throw new IllegalArgumentException("info (" + info + ") has virtual type."); 216 } 217 synchronized (mLock) { 218 String oldInputId = mHardwareInputIdMap.get(deviceId); 219 if (oldInputId != null) { 220 Slog.w(TAG, "Trying to override previous registration: old = " 221 + mInputMap.get(oldInputId) + ":" + deviceId + ", new = " 222 + info + ":" + deviceId); 223 } 224 mHardwareInputIdMap.put(deviceId, info.getId()); 225 mInputMap.put(info.getId(), info); 226 227 for (int i = 0; i < mHdmiStateMap.size(); ++i) { 228 String inputId = findInputIdForHdmiPortLocked(mHdmiStateMap.keyAt(i)); 229 if (inputId != null && inputId.equals(info.getId())) { 230 mHandler.obtainMessage(ListenerHandler.STATE_CHANGED, 231 convertConnectedToState(mHdmiStateMap.valueAt(i)), 0, 232 inputId).sendToTarget(); 233 } 234 } 235 } 236 } 237 238 public void addHdmiCecTvInput(int logicalAddress, TvInputInfo info) { 239 if (info.getType() != TvInputInfo.TYPE_HDMI) { 240 throw new IllegalArgumentException("info (" + info + ") has non-HDMI type."); 241 } 242 synchronized (mLock) { 243 String parentId = info.getParentId(); 244 int parentIndex = mHardwareInputIdMap.indexOfValue(parentId); 245 if (parentIndex < 0 || !parentId.equals(mHardwareInputIdMap.valueAt(parentIndex))) { 246 throw new IllegalArgumentException("info (" + info + ") has invalid parentId."); 247 } 248 String oldInputId = mHdmiCecInputIdMap.get(logicalAddress); 249 if (oldInputId != null) { 250 Slog.w(TAG, "Trying to override previous registration: old = " 251 + mInputMap.get(oldInputId) + ":" + logicalAddress + ", new = " 252 + info + ":" + logicalAddress); 253 } 254 mHdmiCecInputIdMap.put(logicalAddress, info.getId()); 255 mInputMap.put(info.getId(), info); 256 } 257 } 258 259 public void removeTvInput(String inputId) { 260 synchronized (mLock) { 261 mInputMap.remove(inputId); 262 int hardwareIndex = mHardwareInputIdMap.indexOfValue(inputId); 263 if (hardwareIndex >= 0) { 264 mHardwareInputIdMap.removeAt(hardwareIndex); 265 } 266 int cecIndex = mHdmiCecInputIdMap.indexOfValue(inputId); 267 if (cecIndex >= 0) { 268 mHdmiCecInputIdMap.removeAt(cecIndex); 269 } 270 } 271 } 272 273 /** 274 * Create a TvInputHardware object with a specific deviceId. One service at a time can access 275 * the object, and if more than one process attempts to create hardware with the same deviceId, 276 * the latest service will get the object and all the other hardware are released. The 277 * release is notified via ITvInputHardwareCallback.onReleased(). 278 */ 279 public ITvInputHardware acquireHardware(int deviceId, ITvInputHardwareCallback callback, 280 TvInputInfo info, int callingUid, int resolvedUserId) { 281 if (callback == null) { 282 throw new NullPointerException(); 283 } 284 synchronized (mLock) { 285 Connection connection = mConnections.get(deviceId); 286 if (connection == null) { 287 Slog.e(TAG, "Invalid deviceId : " + deviceId); 288 return null; 289 } 290 if (checkUidChangedLocked(connection, callingUid, resolvedUserId)) { 291 TvInputHardwareImpl hardware = 292 new TvInputHardwareImpl(connection.getHardwareInfoLocked()); 293 try { 294 callback.asBinder().linkToDeath(connection, 0); 295 } catch (RemoteException e) { 296 hardware.release(); 297 return null; 298 } 299 connection.resetLocked(hardware, callback, info, callingUid, resolvedUserId); 300 } 301 return connection.getHardwareLocked(); 302 } 303 } 304 305 /** 306 * Release the specified hardware. 307 */ 308 public void releaseHardware(int deviceId, ITvInputHardware hardware, int callingUid, 309 int resolvedUserId) { 310 synchronized (mLock) { 311 Connection connection = mConnections.get(deviceId); 312 if (connection == null) { 313 Slog.e(TAG, "Invalid deviceId : " + deviceId); 314 return; 315 } 316 if (connection.getHardwareLocked() != hardware 317 || checkUidChangedLocked(connection, callingUid, resolvedUserId)) { 318 return; 319 } 320 connection.resetLocked(null, null, null, null, null); 321 } 322 } 323 324 private String findInputIdForHdmiPortLocked(int port) { 325 for (TvInputHardwareInfo hardwareInfo : mInfoList) { 326 if (hardwareInfo.getType() == TvInputHardwareInfo.TV_INPUT_TYPE_HDMI 327 && hardwareInfo.getHdmiPortId() == port) { 328 return mHardwareInputIdMap.get(hardwareInfo.getDeviceId()); 329 } 330 } 331 return null; 332 } 333 334 private class Connection implements IBinder.DeathRecipient { 335 private final TvInputHardwareInfo mHardwareInfo; 336 private TvInputInfo mInfo; 337 private TvInputHardwareImpl mHardware = null; 338 private ITvInputHardwareCallback mCallback; 339 private TvStreamConfig[] mConfigs = null; 340 private Integer mCallingUid = null; 341 private Integer mResolvedUserId = null; 342 343 public Connection(TvInputHardwareInfo hardwareInfo) { 344 mHardwareInfo = hardwareInfo; 345 } 346 347 // *Locked methods assume TvInputHardwareManager.mLock is held. 348 349 public void resetLocked(TvInputHardwareImpl hardware, ITvInputHardwareCallback callback, 350 TvInputInfo info, Integer callingUid, Integer resolvedUserId) { 351 if (mHardware != null) { 352 try { 353 mCallback.onReleased(); 354 } catch (RemoteException e) { 355 Slog.e(TAG, "error in Connection::resetLocked", e); 356 } 357 mHardware.release(); 358 } 359 mHardware = hardware; 360 mCallback = callback; 361 mInfo = info; 362 mCallingUid = callingUid; 363 mResolvedUserId = resolvedUserId; 364 365 if (mHardware != null && mCallback != null) { 366 try { 367 mCallback.onStreamConfigChanged(getConfigsLocked()); 368 } catch (RemoteException e) { 369 Slog.e(TAG, "error in Connection::resetLocked", e); 370 } 371 } 372 } 373 374 public void updateConfigsLocked(TvStreamConfig[] configs) { 375 mConfigs = configs; 376 } 377 378 public TvInputHardwareInfo getHardwareInfoLocked() { 379 return mHardwareInfo; 380 } 381 382 public TvInputInfo getInfoLocked() { 383 return mInfo; 384 } 385 386 public ITvInputHardware getHardwareLocked() { 387 return mHardware; 388 } 389 390 public ITvInputHardwareCallback getCallbackLocked() { 391 return mCallback; 392 } 393 394 public TvStreamConfig[] getConfigsLocked() { 395 return mConfigs; 396 } 397 398 public Integer getCallingUidLocked() { 399 return mCallingUid; 400 } 401 402 public Integer getResolvedUserIdLocked() { 403 return mResolvedUserId; 404 } 405 406 @Override 407 public void binderDied() { 408 synchronized (mLock) { 409 resetLocked(null, null, null, null, null); 410 } 411 } 412 } 413 414 private class TvInputHardwareImpl extends ITvInputHardware.Stub { 415 private final TvInputHardwareInfo mInfo; 416 private boolean mReleased = false; 417 private final Object mImplLock = new Object(); 418 419 private final AudioDevicePort mAudioSource; 420 private final AudioDevicePort mAudioSink; 421 private AudioPatch mAudioPatch = null; 422 423 private TvStreamConfig mActiveConfig = null; 424 425 public TvInputHardwareImpl(TvInputHardwareInfo info) { 426 mInfo = info; 427 AudioDevicePort audioSource = null; 428 AudioDevicePort audioSink = null; 429 if (mInfo.getAudioType() != AudioManager.DEVICE_NONE) { 430 ArrayList<AudioPort> devicePorts = new ArrayList<AudioPort>(); 431 if (mAudioManager.listAudioDevicePorts(devicePorts) == AudioManager.SUCCESS) { 432 // Find source 433 for (AudioPort port : devicePorts) { 434 AudioDevicePort devicePort = (AudioDevicePort) port; 435 if (devicePort.type() == mInfo.getAudioType() && 436 devicePort.address().equals(mInfo.getAudioAddress())) { 437 audioSource = devicePort; 438 break; 439 } 440 } 441 // Find sink 442 // TODO: App may want to specify sink device? 443 int sinkDevices = mAudioManager.getDevicesForStream(AudioManager.STREAM_MUSIC); 444 for (AudioPort port : devicePorts) { 445 AudioDevicePort devicePort = (AudioDevicePort) port; 446 if (devicePort.type() == sinkDevices) { 447 audioSink = devicePort; 448 break; 449 } 450 } 451 } 452 } 453 mAudioSource = audioSource; 454 mAudioSink = audioSink; 455 } 456 457 public void release() { 458 synchronized (mImplLock) { 459 if (mAudioPatch != null) { 460 mAudioManager.releaseAudioPatch(mAudioPatch); 461 mAudioPatch = null; 462 } 463 mReleased = true; 464 } 465 } 466 467 // A TvInputHardwareImpl object holds only one active session. Therefore, if a client 468 // attempts to call setSurface with different TvStreamConfig objects, the last call will 469 // prevail. 470 @Override 471 public boolean setSurface(Surface surface, TvStreamConfig config) 472 throws RemoteException { 473 synchronized (mImplLock) { 474 if (mReleased) { 475 throw new IllegalStateException("Device already released."); 476 } 477 if (surface != null && config == null) { 478 return false; 479 } 480 if (surface == null && mActiveConfig == null) { 481 return false; 482 } 483 if (mInfo.getType() == TvInputHardwareInfo.TV_INPUT_TYPE_HDMI) { 484 if (surface != null) { 485 // Set "Active Source" for HDMI. 486 // TODO(hdmi): mHdmiClient.deviceSelect(...); 487 mActiveHdmiSources.add(mInfo.getDeviceId()); 488 } else { 489 mActiveHdmiSources.remove(mInfo.getDeviceId()); 490 if (mActiveHdmiSources.size() == 0) { 491 // Tell HDMI that no HDMI source is active 492 // TODO(hdmi): mHdmiClient.portSelect(null); 493 } 494 } 495 } 496 if (mAudioSource != null && mAudioSink != null) { 497 if (surface != null) { 498 AudioPortConfig sourceConfig = mAudioSource.activeConfig(); 499 AudioPortConfig sinkConfig = mAudioSink.activeConfig(); 500 AudioPatch[] audioPatchArray = new AudioPatch[] { mAudioPatch }; 501 // TODO: build config if activeConfig() == null 502 mAudioManager.createAudioPatch( 503 audioPatchArray, 504 new AudioPortConfig[] { sourceConfig }, 505 new AudioPortConfig[] { sinkConfig }); 506 mAudioPatch = audioPatchArray[0]; 507 } else { 508 mAudioManager.releaseAudioPatch(mAudioPatch); 509 mAudioPatch = null; 510 } 511 } 512 int result = TvInputHal.ERROR_UNKNOWN; 513 if (surface == null) { 514 result = mHal.removeStream(mInfo.getDeviceId(), mActiveConfig); 515 mActiveConfig = null; 516 } else { 517 if (config != mActiveConfig && mActiveConfig != null) { 518 result = mHal.removeStream(mInfo.getDeviceId(), mActiveConfig); 519 if (result != TvInputHal.SUCCESS) { 520 mActiveConfig = null; 521 return false; 522 } 523 } 524 result = mHal.addStream(mInfo.getDeviceId(), surface, config); 525 if (result == TvInputHal.SUCCESS) { 526 mActiveConfig = config; 527 } 528 } 529 return result == TvInputHal.SUCCESS; 530 } 531 } 532 533 @Override 534 public void setVolume(float volume) throws RemoteException { 535 synchronized (mImplLock) { 536 if (mReleased) { 537 throw new IllegalStateException("Device already released."); 538 } 539 } 540 // TODO: Use AudioGain? 541 } 542 543 @Override 544 public boolean dispatchKeyEventToHdmi(KeyEvent event) throws RemoteException { 545 synchronized (mImplLock) { 546 if (mReleased) { 547 throw new IllegalStateException("Device already released."); 548 } 549 } 550 if (mInfo.getType() != TvInputHardwareInfo.TV_INPUT_TYPE_HDMI) { 551 return false; 552 } 553 // TODO(hdmi): mHdmiClient.sendKeyEvent(event); 554 return false; 555 } 556 } 557 558 interface Listener { 559 public void onStateChanged(String inputId, int state); 560 public void onHardwareDeviceAdded(TvInputHardwareInfo info); 561 public void onHardwareDeviceRemoved(TvInputHardwareInfo info); 562 public void onHdmiCecDeviceAdded(HdmiCecDeviceInfo cecDevice); 563 public void onHdmiCecDeviceRemoved(HdmiCecDeviceInfo cecDevice); 564 } 565 566 private class ListenerHandler extends Handler { 567 private static final int STATE_CHANGED = 1; 568 private static final int HARDWARE_DEVICE_ADDED = 2; 569 private static final int HARDWARE_DEVICE_REMOVED = 3; 570 private static final int HDMI_CEC_DEVICE_ADDED = 4; 571 private static final int HDMI_CEC_DEVICE_REMOVED = 5; 572 573 @Override 574 public final void handleMessage(Message msg) { 575 switch (msg.what) { 576 case STATE_CHANGED: { 577 String inputId = (String) msg.obj; 578 int state = msg.arg1; 579 mListener.onStateChanged(inputId, state); 580 break; 581 } 582 case HARDWARE_DEVICE_ADDED: { 583 TvInputHardwareInfo info = (TvInputHardwareInfo) msg.obj; 584 mListener.onHardwareDeviceAdded(info); 585 break; 586 } 587 case HARDWARE_DEVICE_REMOVED: { 588 TvInputHardwareInfo info = (TvInputHardwareInfo) msg.obj; 589 mListener.onHardwareDeviceRemoved(info); 590 break; 591 } 592 case HDMI_CEC_DEVICE_ADDED: { 593 HdmiCecDeviceInfo info = (HdmiCecDeviceInfo) msg.obj; 594 mListener.onHdmiCecDeviceAdded(info); 595 break; 596 } 597 case HDMI_CEC_DEVICE_REMOVED: { 598 HdmiCecDeviceInfo info = (HdmiCecDeviceInfo) msg.obj; 599 mListener.onHdmiCecDeviceRemoved(info); 600 break; 601 } 602 default: { 603 Slog.w(TAG, "Unhandled message: " + msg); 604 break; 605 } 606 } 607 } 608 } 609 610 // Listener implementations for HdmiControlService 611 612 private final class HdmiHotplugEventListener extends IHdmiHotplugEventListener.Stub { 613 @Override 614 public void onReceived(HdmiHotplugEvent event) { 615 synchronized (mLock) { 616 mHdmiStateMap.put(event.getPort(), event.isConnected()); 617 String inputId = findInputIdForHdmiPortLocked(event.getPort()); 618 if (inputId == null) { 619 return; 620 } 621 mHandler.obtainMessage(ListenerHandler.STATE_CHANGED, 622 convertConnectedToState(event.isConnected()), 0, inputId).sendToTarget(); 623 } 624 } 625 } 626 627 private final class HdmiDeviceEventListener extends IHdmiDeviceEventListener.Stub { 628 @Override 629 public void onStatusChanged(HdmiCecDeviceInfo deviceInfo, boolean activated) { 630 mHandler.obtainMessage( 631 activated ? ListenerHandler.HDMI_CEC_DEVICE_ADDED 632 : ListenerHandler.HDMI_CEC_DEVICE_REMOVED, 633 0, 0, deviceInfo).sendToTarget(); 634 } 635 } 636 637 private final class HdmiInputChangeListener extends IHdmiInputChangeListener.Stub { 638 @Override 639 public void onChanged(HdmiCecDeviceInfo device) throws RemoteException { 640 // TODO: Build a channel Uri for the TvInputInfo associated with the logical device 641 // and send an intent to TV app 642 } 643 } 644} 645