InputDispatcher.cpp revision 33bbfd2232ea9eaae9a9d87a05a95a430f09bd83
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "InputDispatcher" 18 19//#define LOG_NDEBUG 0 20 21// Log detailed debug messages about each inbound event notification to the dispatcher. 22#define DEBUG_INBOUND_EVENT_DETAILS 0 23 24// Log detailed debug messages about each outbound event processed by the dispatcher. 25#define DEBUG_OUTBOUND_EVENT_DETAILS 0 26 27// Log debug messages about batching. 28#define DEBUG_BATCHING 0 29 30// Log debug messages about the dispatch cycle. 31#define DEBUG_DISPATCH_CYCLE 0 32 33// Log debug messages about registrations. 34#define DEBUG_REGISTRATION 0 35 36// Log debug messages about performance statistics. 37#define DEBUG_PERFORMANCE_STATISTICS 0 38 39// Log debug messages about input event injection. 40#define DEBUG_INJECTION 0 41 42// Log debug messages about input event throttling. 43#define DEBUG_THROTTLING 0 44 45// Log debug messages about input focus tracking. 46#define DEBUG_FOCUS 0 47 48// Log debug messages about the app switch latency optimization. 49#define DEBUG_APP_SWITCH 0 50 51#include "InputDispatcher.h" 52 53#include <cutils/log.h> 54#include <ui/PowerManager.h> 55 56#include <stddef.h> 57#include <unistd.h> 58#include <errno.h> 59#include <limits.h> 60 61#define INDENT " " 62#define INDENT2 " " 63 64namespace android { 65 66// Default input dispatching timeout if there is no focused application or paused window 67// from which to determine an appropriate dispatching timeout. 68const nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec 69 70// Amount of time to allow for all pending events to be processed when an app switch 71// key is on the way. This is used to preempt input dispatch and drop input events 72// when an application takes too long to respond and the user has pressed an app switch key. 73const nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec 74 75// Amount of time to allow for an event to be dispatched (measured since its eventTime) 76// before considering it stale and dropping it. 77const nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec 78 79 80static inline nsecs_t now() { 81 return systemTime(SYSTEM_TIME_MONOTONIC); 82} 83 84static inline const char* toString(bool value) { 85 return value ? "true" : "false"; 86} 87 88static inline int32_t getMotionEventActionPointerIndex(int32_t action) { 89 return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) 90 >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 91} 92 93static bool isValidKeyAction(int32_t action) { 94 switch (action) { 95 case AKEY_EVENT_ACTION_DOWN: 96 case AKEY_EVENT_ACTION_UP: 97 return true; 98 default: 99 return false; 100 } 101} 102 103static bool validateKeyEvent(int32_t action) { 104 if (! isValidKeyAction(action)) { 105 LOGE("Key event has invalid action code 0x%x", action); 106 return false; 107 } 108 return true; 109} 110 111static bool isValidMotionAction(int32_t action, size_t pointerCount) { 112 switch (action & AMOTION_EVENT_ACTION_MASK) { 113 case AMOTION_EVENT_ACTION_DOWN: 114 case AMOTION_EVENT_ACTION_UP: 115 case AMOTION_EVENT_ACTION_CANCEL: 116 case AMOTION_EVENT_ACTION_MOVE: 117 case AMOTION_EVENT_ACTION_OUTSIDE: 118 case AMOTION_EVENT_ACTION_HOVER_MOVE: 119 case AMOTION_EVENT_ACTION_SCROLL: 120 return true; 121 case AMOTION_EVENT_ACTION_POINTER_DOWN: 122 case AMOTION_EVENT_ACTION_POINTER_UP: { 123 int32_t index = getMotionEventActionPointerIndex(action); 124 return index >= 0 && size_t(index) < pointerCount; 125 } 126 default: 127 return false; 128 } 129} 130 131static bool validateMotionEvent(int32_t action, size_t pointerCount, 132 const int32_t* pointerIds) { 133 if (! isValidMotionAction(action, pointerCount)) { 134 LOGE("Motion event has invalid action code 0x%x", action); 135 return false; 136 } 137 if (pointerCount < 1 || pointerCount > MAX_POINTERS) { 138 LOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.", 139 pointerCount, MAX_POINTERS); 140 return false; 141 } 142 BitSet32 pointerIdBits; 143 for (size_t i = 0; i < pointerCount; i++) { 144 int32_t id = pointerIds[i]; 145 if (id < 0 || id > MAX_POINTER_ID) { 146 LOGE("Motion event has invalid pointer id %d; value must be between 0 and %d", 147 id, MAX_POINTER_ID); 148 return false; 149 } 150 if (pointerIdBits.hasBit(id)) { 151 LOGE("Motion event has duplicate pointer id %d", id); 152 return false; 153 } 154 pointerIdBits.markBit(id); 155 } 156 return true; 157} 158 159static void dumpRegion(String8& dump, const SkRegion& region) { 160 if (region.isEmpty()) { 161 dump.append("<empty>"); 162 return; 163 } 164 165 bool first = true; 166 for (SkRegion::Iterator it(region); !it.done(); it.next()) { 167 if (first) { 168 first = false; 169 } else { 170 dump.append("|"); 171 } 172 const SkIRect& rect = it.rect(); 173 dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); 174 } 175} 176 177 178// --- InputDispatcher --- 179 180InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) : 181 mPolicy(policy), 182 mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX), 183 mNextUnblockedEvent(NULL), 184 mDispatchEnabled(true), mDispatchFrozen(false), 185 mFocusedWindow(NULL), 186 mFocusedApplication(NULL), 187 mCurrentInputTargetsValid(false), 188 mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) { 189 mLooper = new Looper(false); 190 191 mInboundQueue.headSentinel.refCount = -1; 192 mInboundQueue.headSentinel.type = EventEntry::TYPE_SENTINEL; 193 mInboundQueue.headSentinel.eventTime = LONG_LONG_MIN; 194 195 mInboundQueue.tailSentinel.refCount = -1; 196 mInboundQueue.tailSentinel.type = EventEntry::TYPE_SENTINEL; 197 mInboundQueue.tailSentinel.eventTime = LONG_LONG_MAX; 198 199 mKeyRepeatState.lastKeyEntry = NULL; 200 201 int32_t maxEventsPerSecond = policy->getMaxEventsPerSecond(); 202 mThrottleState.minTimeBetweenEvents = 1000000000LL / maxEventsPerSecond; 203 mThrottleState.lastDeviceId = -1; 204 205#if DEBUG_THROTTLING 206 mThrottleState.originalSampleCount = 0; 207 LOGD("Throttling - Max events per second = %d", maxEventsPerSecond); 208#endif 209} 210 211InputDispatcher::~InputDispatcher() { 212 { // acquire lock 213 AutoMutex _l(mLock); 214 215 resetKeyRepeatLocked(); 216 releasePendingEventLocked(); 217 drainInboundQueueLocked(); 218 } 219 220 while (mConnectionsByReceiveFd.size() != 0) { 221 unregisterInputChannel(mConnectionsByReceiveFd.valueAt(0)->inputChannel); 222 } 223} 224 225void InputDispatcher::dispatchOnce() { 226 nsecs_t keyRepeatTimeout = mPolicy->getKeyRepeatTimeout(); 227 nsecs_t keyRepeatDelay = mPolicy->getKeyRepeatDelay(); 228 229 nsecs_t nextWakeupTime = LONG_LONG_MAX; 230 { // acquire lock 231 AutoMutex _l(mLock); 232 dispatchOnceInnerLocked(keyRepeatTimeout, keyRepeatDelay, & nextWakeupTime); 233 234 if (runCommandsLockedInterruptible()) { 235 nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 236 } 237 } // release lock 238 239 // Wait for callback or timeout or wake. (make sure we round up, not down) 240 nsecs_t currentTime = now(); 241 int32_t timeoutMillis; 242 if (nextWakeupTime > currentTime) { 243 uint64_t timeout = uint64_t(nextWakeupTime - currentTime); 244 timeout = (timeout + 999999LL) / 1000000LL; 245 timeoutMillis = timeout > INT_MAX ? -1 : int32_t(timeout); 246 } else { 247 timeoutMillis = 0; 248 } 249 250 mLooper->pollOnce(timeoutMillis); 251} 252 253void InputDispatcher::dispatchOnceInnerLocked(nsecs_t keyRepeatTimeout, 254 nsecs_t keyRepeatDelay, nsecs_t* nextWakeupTime) { 255 nsecs_t currentTime = now(); 256 257 // Reset the key repeat timer whenever we disallow key events, even if the next event 258 // is not a key. This is to ensure that we abort a key repeat if the device is just coming 259 // out of sleep. 260 if (keyRepeatTimeout < 0) { 261 resetKeyRepeatLocked(); 262 } 263 264 // If dispatching is frozen, do not process timeouts or try to deliver any new events. 265 if (mDispatchFrozen) { 266#if DEBUG_FOCUS 267 LOGD("Dispatch frozen. Waiting some more."); 268#endif 269 return; 270 } 271 272 // Optimize latency of app switches. 273 // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has 274 // been pressed. When it expires, we preempt dispatch and drop all other pending events. 275 bool isAppSwitchDue = mAppSwitchDueTime <= currentTime; 276 if (mAppSwitchDueTime < *nextWakeupTime) { 277 *nextWakeupTime = mAppSwitchDueTime; 278 } 279 280 // Ready to start a new event. 281 // If we don't already have a pending event, go grab one. 282 if (! mPendingEvent) { 283 if (mInboundQueue.isEmpty()) { 284 if (isAppSwitchDue) { 285 // The inbound queue is empty so the app switch key we were waiting 286 // for will never arrive. Stop waiting for it. 287 resetPendingAppSwitchLocked(false); 288 isAppSwitchDue = false; 289 } 290 291 // Synthesize a key repeat if appropriate. 292 if (mKeyRepeatState.lastKeyEntry) { 293 if (currentTime >= mKeyRepeatState.nextRepeatTime) { 294 mPendingEvent = synthesizeKeyRepeatLocked(currentTime, keyRepeatDelay); 295 } else { 296 if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) { 297 *nextWakeupTime = mKeyRepeatState.nextRepeatTime; 298 } 299 } 300 } 301 if (! mPendingEvent) { 302 return; 303 } 304 } else { 305 // Inbound queue has at least one entry. 306 EventEntry* entry = mInboundQueue.headSentinel.next; 307 308 // Throttle the entry if it is a move event and there are no 309 // other events behind it in the queue. Due to movement batching, additional 310 // samples may be appended to this event by the time the throttling timeout 311 // expires. 312 // TODO Make this smarter and consider throttling per device independently. 313 if (entry->type == EventEntry::TYPE_MOTION 314 && !isAppSwitchDue 315 && mDispatchEnabled 316 && (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) 317 && !entry->isInjected()) { 318 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 319 int32_t deviceId = motionEntry->deviceId; 320 uint32_t source = motionEntry->source; 321 if (! isAppSwitchDue 322 && motionEntry->next == & mInboundQueue.tailSentinel // exactly one event 323 && (motionEntry->action == AMOTION_EVENT_ACTION_MOVE 324 || motionEntry->action == AMOTION_EVENT_ACTION_HOVER_MOVE) 325 && deviceId == mThrottleState.lastDeviceId 326 && source == mThrottleState.lastSource) { 327 nsecs_t nextTime = mThrottleState.lastEventTime 328 + mThrottleState.minTimeBetweenEvents; 329 if (currentTime < nextTime) { 330 // Throttle it! 331#if DEBUG_THROTTLING 332 LOGD("Throttling - Delaying motion event for " 333 "device %d, source 0x%08x by up to %0.3fms.", 334 deviceId, source, (nextTime - currentTime) * 0.000001); 335#endif 336 if (nextTime < *nextWakeupTime) { 337 *nextWakeupTime = nextTime; 338 } 339 if (mThrottleState.originalSampleCount == 0) { 340 mThrottleState.originalSampleCount = 341 motionEntry->countSamples(); 342 } 343 return; 344 } 345 } 346 347#if DEBUG_THROTTLING 348 if (mThrottleState.originalSampleCount != 0) { 349 uint32_t count = motionEntry->countSamples(); 350 LOGD("Throttling - Motion event sample count grew by %d from %d to %d.", 351 count - mThrottleState.originalSampleCount, 352 mThrottleState.originalSampleCount, count); 353 mThrottleState.originalSampleCount = 0; 354 } 355#endif 356 357 mThrottleState.lastEventTime = entry->eventTime < currentTime 358 ? entry->eventTime : currentTime; 359 mThrottleState.lastDeviceId = deviceId; 360 mThrottleState.lastSource = source; 361 } 362 363 mInboundQueue.dequeue(entry); 364 mPendingEvent = entry; 365 } 366 367 // Poke user activity for this event. 368 if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) { 369 pokeUserActivityLocked(mPendingEvent); 370 } 371 } 372 373 // Now we have an event to dispatch. 374 // All events are eventually dequeued and processed this way, even if we intend to drop them. 375 assert(mPendingEvent != NULL); 376 bool done = false; 377 DropReason dropReason = DROP_REASON_NOT_DROPPED; 378 if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) { 379 dropReason = DROP_REASON_POLICY; 380 } else if (!mDispatchEnabled) { 381 dropReason = DROP_REASON_DISABLED; 382 } 383 384 if (mNextUnblockedEvent == mPendingEvent) { 385 mNextUnblockedEvent = NULL; 386 } 387 388 switch (mPendingEvent->type) { 389 case EventEntry::TYPE_CONFIGURATION_CHANGED: { 390 ConfigurationChangedEntry* typedEntry = 391 static_cast<ConfigurationChangedEntry*>(mPendingEvent); 392 done = dispatchConfigurationChangedLocked(currentTime, typedEntry); 393 dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped 394 break; 395 } 396 397 case EventEntry::TYPE_KEY: { 398 KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent); 399 if (isAppSwitchDue) { 400 if (isAppSwitchKeyEventLocked(typedEntry)) { 401 resetPendingAppSwitchLocked(true); 402 isAppSwitchDue = false; 403 } else if (dropReason == DROP_REASON_NOT_DROPPED) { 404 dropReason = DROP_REASON_APP_SWITCH; 405 } 406 } 407 if (dropReason == DROP_REASON_NOT_DROPPED 408 && isStaleEventLocked(currentTime, typedEntry)) { 409 dropReason = DROP_REASON_STALE; 410 } 411 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 412 dropReason = DROP_REASON_BLOCKED; 413 } 414 done = dispatchKeyLocked(currentTime, typedEntry, keyRepeatTimeout, 415 &dropReason, nextWakeupTime); 416 break; 417 } 418 419 case EventEntry::TYPE_MOTION: { 420 MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent); 421 if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) { 422 dropReason = DROP_REASON_APP_SWITCH; 423 } 424 if (dropReason == DROP_REASON_NOT_DROPPED 425 && isStaleEventLocked(currentTime, typedEntry)) { 426 dropReason = DROP_REASON_STALE; 427 } 428 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 429 dropReason = DROP_REASON_BLOCKED; 430 } 431 done = dispatchMotionLocked(currentTime, typedEntry, 432 &dropReason, nextWakeupTime); 433 break; 434 } 435 436 default: 437 assert(false); 438 break; 439 } 440 441 if (done) { 442 if (dropReason != DROP_REASON_NOT_DROPPED) { 443 dropInboundEventLocked(mPendingEvent, dropReason); 444 } 445 446 releasePendingEventLocked(); 447 *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 448 } 449} 450 451bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) { 452 bool needWake = mInboundQueue.isEmpty(); 453 mInboundQueue.enqueueAtTail(entry); 454 455 switch (entry->type) { 456 case EventEntry::TYPE_KEY: { 457 // Optimize app switch latency. 458 // If the application takes too long to catch up then we drop all events preceding 459 // the app switch key. 460 KeyEntry* keyEntry = static_cast<KeyEntry*>(entry); 461 if (isAppSwitchKeyEventLocked(keyEntry)) { 462 if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) { 463 mAppSwitchSawKeyDown = true; 464 } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 465 if (mAppSwitchSawKeyDown) { 466#if DEBUG_APP_SWITCH 467 LOGD("App switch is pending!"); 468#endif 469 mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT; 470 mAppSwitchSawKeyDown = false; 471 needWake = true; 472 } 473 } 474 } 475 break; 476 } 477 478 case EventEntry::TYPE_MOTION: { 479 // Optimize case where the current application is unresponsive and the user 480 // decides to touch a window in a different application. 481 // If the application takes too long to catch up then we drop all events preceding 482 // the touch into the other window. 483 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 484 if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN 485 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 486 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY 487 && mInputTargetWaitApplication != NULL) { 488 int32_t x = int32_t(motionEntry->firstSample.pointerCoords[0]. 489 getAxisValue(AMOTION_EVENT_AXIS_X)); 490 int32_t y = int32_t(motionEntry->firstSample.pointerCoords[0]. 491 getAxisValue(AMOTION_EVENT_AXIS_Y)); 492 const InputWindow* touchedWindow = findTouchedWindowAtLocked(x, y); 493 if (touchedWindow 494 && touchedWindow->inputWindowHandle != NULL 495 && touchedWindow->inputWindowHandle->getInputApplicationHandle() 496 != mInputTargetWaitApplication) { 497 // User touched a different application than the one we are waiting on. 498 // Flag the event, and start pruning the input queue. 499 mNextUnblockedEvent = motionEntry; 500 needWake = true; 501 } 502 } 503 break; 504 } 505 } 506 507 return needWake; 508} 509 510const InputWindow* InputDispatcher::findTouchedWindowAtLocked(int32_t x, int32_t y) { 511 // Traverse windows from front to back to find touched window. 512 size_t numWindows = mWindows.size(); 513 for (size_t i = 0; i < numWindows; i++) { 514 const InputWindow* window = & mWindows.editItemAt(i); 515 int32_t flags = window->layoutParamsFlags; 516 517 if (window->visible) { 518 if (!(flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 519 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 520 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 521 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 522 // Found window. 523 return window; 524 } 525 } 526 } 527 528 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 529 // Error window is on top but not visible, so touch is dropped. 530 return NULL; 531 } 532 } 533 return NULL; 534} 535 536void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) { 537 const char* reason; 538 switch (dropReason) { 539 case DROP_REASON_POLICY: 540#if DEBUG_INBOUND_EVENT_DETAILS 541 LOGD("Dropped event because policy consumed it."); 542#endif 543 reason = "inbound event was dropped because the policy consumed it"; 544 break; 545 case DROP_REASON_DISABLED: 546 LOGI("Dropped event because input dispatch is disabled."); 547 reason = "inbound event was dropped because input dispatch is disabled"; 548 break; 549 case DROP_REASON_APP_SWITCH: 550 LOGI("Dropped event because of pending overdue app switch."); 551 reason = "inbound event was dropped because of pending overdue app switch"; 552 break; 553 case DROP_REASON_BLOCKED: 554 LOGI("Dropped event because the current application is not responding and the user " 555 "has started interating with a different application."); 556 reason = "inbound event was dropped because the current application is not responding " 557 "and the user has started interating with a different application"; 558 break; 559 case DROP_REASON_STALE: 560 LOGI("Dropped event because it is stale."); 561 reason = "inbound event was dropped because it is stale"; 562 break; 563 default: 564 assert(false); 565 return; 566 } 567 568 switch (entry->type) { 569 case EventEntry::TYPE_KEY: 570 synthesizeCancelationEventsForAllConnectionsLocked( 571 InputState::CANCEL_NON_POINTER_EVENTS, reason); 572 break; 573 case EventEntry::TYPE_MOTION: { 574 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 575 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 576 synthesizeCancelationEventsForAllConnectionsLocked( 577 InputState::CANCEL_POINTER_EVENTS, reason); 578 } else { 579 synthesizeCancelationEventsForAllConnectionsLocked( 580 InputState::CANCEL_NON_POINTER_EVENTS, reason); 581 } 582 break; 583 } 584 } 585} 586 587bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) { 588 return keyCode == AKEYCODE_HOME || keyCode == AKEYCODE_ENDCALL; 589} 590 591bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) { 592 return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) 593 && isAppSwitchKeyCode(keyEntry->keyCode) 594 && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED) 595 && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER); 596} 597 598bool InputDispatcher::isAppSwitchPendingLocked() { 599 return mAppSwitchDueTime != LONG_LONG_MAX; 600} 601 602void InputDispatcher::resetPendingAppSwitchLocked(bool handled) { 603 mAppSwitchDueTime = LONG_LONG_MAX; 604 605#if DEBUG_APP_SWITCH 606 if (handled) { 607 LOGD("App switch has arrived."); 608 } else { 609 LOGD("App switch was abandoned."); 610 } 611#endif 612} 613 614bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) { 615 return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT; 616} 617 618bool InputDispatcher::runCommandsLockedInterruptible() { 619 if (mCommandQueue.isEmpty()) { 620 return false; 621 } 622 623 do { 624 CommandEntry* commandEntry = mCommandQueue.dequeueAtHead(); 625 626 Command command = commandEntry->command; 627 (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible' 628 629 commandEntry->connection.clear(); 630 mAllocator.releaseCommandEntry(commandEntry); 631 } while (! mCommandQueue.isEmpty()); 632 return true; 633} 634 635InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) { 636 CommandEntry* commandEntry = mAllocator.obtainCommandEntry(command); 637 mCommandQueue.enqueueAtTail(commandEntry); 638 return commandEntry; 639} 640 641void InputDispatcher::drainInboundQueueLocked() { 642 while (! mInboundQueue.isEmpty()) { 643 EventEntry* entry = mInboundQueue.dequeueAtHead(); 644 releaseInboundEventLocked(entry); 645 } 646} 647 648void InputDispatcher::releasePendingEventLocked() { 649 if (mPendingEvent) { 650 releaseInboundEventLocked(mPendingEvent); 651 mPendingEvent = NULL; 652 } 653} 654 655void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) { 656 InjectionState* injectionState = entry->injectionState; 657 if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) { 658#if DEBUG_DISPATCH_CYCLE 659 LOGD("Injected inbound event was dropped."); 660#endif 661 setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED); 662 } 663 mAllocator.releaseEventEntry(entry); 664} 665 666void InputDispatcher::resetKeyRepeatLocked() { 667 if (mKeyRepeatState.lastKeyEntry) { 668 mAllocator.releaseKeyEntry(mKeyRepeatState.lastKeyEntry); 669 mKeyRepeatState.lastKeyEntry = NULL; 670 } 671} 672 673InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked( 674 nsecs_t currentTime, nsecs_t keyRepeatDelay) { 675 KeyEntry* entry = mKeyRepeatState.lastKeyEntry; 676 677 // Reuse the repeated key entry if it is otherwise unreferenced. 678 uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK) 679 | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED; 680 if (entry->refCount == 1) { 681 mAllocator.recycleKeyEntry(entry); 682 entry->eventTime = currentTime; 683 entry->policyFlags = policyFlags; 684 entry->repeatCount += 1; 685 } else { 686 KeyEntry* newEntry = mAllocator.obtainKeyEntry(currentTime, 687 entry->deviceId, entry->source, policyFlags, 688 entry->action, entry->flags, entry->keyCode, entry->scanCode, 689 entry->metaState, entry->repeatCount + 1, entry->downTime); 690 691 mKeyRepeatState.lastKeyEntry = newEntry; 692 mAllocator.releaseKeyEntry(entry); 693 694 entry = newEntry; 695 } 696 entry->syntheticRepeat = true; 697 698 // Increment reference count since we keep a reference to the event in 699 // mKeyRepeatState.lastKeyEntry in addition to the one we return. 700 entry->refCount += 1; 701 702 if (entry->repeatCount == 1) { 703 entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS; 704 } 705 706 mKeyRepeatState.nextRepeatTime = currentTime + keyRepeatDelay; 707 return entry; 708} 709 710bool InputDispatcher::dispatchConfigurationChangedLocked( 711 nsecs_t currentTime, ConfigurationChangedEntry* entry) { 712#if DEBUG_OUTBOUND_EVENT_DETAILS 713 LOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime); 714#endif 715 716 // Reset key repeating in case a keyboard device was added or removed or something. 717 resetKeyRepeatLocked(); 718 719 // Enqueue a command to run outside the lock to tell the policy that the configuration changed. 720 CommandEntry* commandEntry = postCommandLocked( 721 & InputDispatcher::doNotifyConfigurationChangedInterruptible); 722 commandEntry->eventTime = entry->eventTime; 723 return true; 724} 725 726bool InputDispatcher::dispatchKeyLocked( 727 nsecs_t currentTime, KeyEntry* entry, nsecs_t keyRepeatTimeout, 728 DropReason* dropReason, nsecs_t* nextWakeupTime) { 729 // Preprocessing. 730 if (! entry->dispatchInProgress) { 731 if (entry->repeatCount == 0 732 && entry->action == AKEY_EVENT_ACTION_DOWN 733 && (entry->policyFlags & POLICY_FLAG_TRUSTED) 734 && !entry->isInjected()) { 735 if (mKeyRepeatState.lastKeyEntry 736 && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) { 737 // We have seen two identical key downs in a row which indicates that the device 738 // driver is automatically generating key repeats itself. We take note of the 739 // repeat here, but we disable our own next key repeat timer since it is clear that 740 // we will not need to synthesize key repeats ourselves. 741 entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1; 742 resetKeyRepeatLocked(); 743 mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves 744 } else { 745 // Not a repeat. Save key down state in case we do see a repeat later. 746 resetKeyRepeatLocked(); 747 mKeyRepeatState.nextRepeatTime = entry->eventTime + keyRepeatTimeout; 748 } 749 mKeyRepeatState.lastKeyEntry = entry; 750 entry->refCount += 1; 751 } else if (! entry->syntheticRepeat) { 752 resetKeyRepeatLocked(); 753 } 754 755 entry->dispatchInProgress = true; 756 resetTargetsLocked(); 757 758 logOutboundKeyDetailsLocked("dispatchKey - ", entry); 759 } 760 761 // Give the policy a chance to intercept the key. 762 if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) { 763 if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) { 764 CommandEntry* commandEntry = postCommandLocked( 765 & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible); 766 if (mFocusedWindow) { 767 commandEntry->inputWindowHandle = mFocusedWindow->inputWindowHandle; 768 } 769 commandEntry->keyEntry = entry; 770 entry->refCount += 1; 771 return false; // wait for the command to run 772 } else { 773 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 774 } 775 } else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) { 776 if (*dropReason == DROP_REASON_NOT_DROPPED) { 777 *dropReason = DROP_REASON_POLICY; 778 } 779 } 780 781 // Clean up if dropping the event. 782 if (*dropReason != DROP_REASON_NOT_DROPPED) { 783 resetTargetsLocked(); 784 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 785 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 786 return true; 787 } 788 789 // Identify targets. 790 if (! mCurrentInputTargetsValid) { 791 int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime, 792 entry, nextWakeupTime); 793 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 794 return false; 795 } 796 797 setInjectionResultLocked(entry, injectionResult); 798 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 799 return true; 800 } 801 802 addMonitoringTargetsLocked(); 803 commitTargetsLocked(); 804 } 805 806 // Dispatch the key. 807 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 808 return true; 809} 810 811void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) { 812#if DEBUG_OUTBOUND_EVENT_DETAILS 813 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 814 "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, " 815 "repeatCount=%d, downTime=%lld", 816 prefix, 817 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 818 entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState, 819 entry->repeatCount, entry->downTime); 820#endif 821} 822 823bool InputDispatcher::dispatchMotionLocked( 824 nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) { 825 // Preprocessing. 826 if (! entry->dispatchInProgress) { 827 entry->dispatchInProgress = true; 828 resetTargetsLocked(); 829 830 logOutboundMotionDetailsLocked("dispatchMotion - ", entry); 831 } 832 833 // Clean up if dropping the event. 834 if (*dropReason != DROP_REASON_NOT_DROPPED) { 835 resetTargetsLocked(); 836 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 837 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 838 return true; 839 } 840 841 bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER; 842 843 // Identify targets. 844 bool conflictingPointerActions = false; 845 if (! mCurrentInputTargetsValid) { 846 int32_t injectionResult; 847 if (isPointerEvent) { 848 // Pointer event. (eg. touchscreen) 849 injectionResult = findTouchedWindowTargetsLocked(currentTime, 850 entry, nextWakeupTime, &conflictingPointerActions); 851 } else { 852 // Non touch event. (eg. trackball) 853 injectionResult = findFocusedWindowTargetsLocked(currentTime, 854 entry, nextWakeupTime); 855 } 856 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 857 return false; 858 } 859 860 setInjectionResultLocked(entry, injectionResult); 861 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 862 return true; 863 } 864 865 addMonitoringTargetsLocked(); 866 commitTargetsLocked(); 867 } 868 869 // Dispatch the motion. 870 if (conflictingPointerActions) { 871 synthesizeCancelationEventsForAllConnectionsLocked( 872 InputState::CANCEL_POINTER_EVENTS, "Conflicting pointer actions."); 873 } 874 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 875 return true; 876} 877 878 879void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) { 880#if DEBUG_OUTBOUND_EVENT_DETAILS 881 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 882 "action=0x%x, flags=0x%x, " 883 "metaState=0x%x, edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld", 884 prefix, 885 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 886 entry->action, entry->flags, 887 entry->metaState, entry->edgeFlags, entry->xPrecision, entry->yPrecision, 888 entry->downTime); 889 890 // Print the most recent sample that we have available, this may change due to batching. 891 size_t sampleCount = 1; 892 const MotionSample* sample = & entry->firstSample; 893 for (; sample->next != NULL; sample = sample->next) { 894 sampleCount += 1; 895 } 896 for (uint32_t i = 0; i < entry->pointerCount; i++) { 897 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 898 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 899 "orientation=%f", 900 i, entry->pointerIds[i], 901 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 902 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 903 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 904 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 905 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 906 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 907 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 908 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 909 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 910 } 911 912 // Keep in mind that due to batching, it is possible for the number of samples actually 913 // dispatched to change before the application finally consumed them. 914 if (entry->action == AMOTION_EVENT_ACTION_MOVE) { 915 LOGD(" ... Total movement samples currently batched %d ...", sampleCount); 916 } 917#endif 918} 919 920void InputDispatcher::dispatchEventToCurrentInputTargetsLocked(nsecs_t currentTime, 921 EventEntry* eventEntry, bool resumeWithAppendedMotionSample) { 922#if DEBUG_DISPATCH_CYCLE 923 LOGD("dispatchEventToCurrentInputTargets - " 924 "resumeWithAppendedMotionSample=%s", 925 toString(resumeWithAppendedMotionSample)); 926#endif 927 928 assert(eventEntry->dispatchInProgress); // should already have been set to true 929 930 pokeUserActivityLocked(eventEntry); 931 932 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 933 const InputTarget& inputTarget = mCurrentInputTargets.itemAt(i); 934 935 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 936 if (connectionIndex >= 0) { 937 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 938 prepareDispatchCycleLocked(currentTime, connection, eventEntry, & inputTarget, 939 resumeWithAppendedMotionSample); 940 } else { 941#if DEBUG_FOCUS 942 LOGD("Dropping event delivery to target with channel '%s' because it " 943 "is no longer registered with the input dispatcher.", 944 inputTarget.inputChannel->getName().string()); 945#endif 946 } 947 } 948} 949 950void InputDispatcher::resetTargetsLocked() { 951 mCurrentInputTargetsValid = false; 952 mCurrentInputTargets.clear(); 953 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 954 mInputTargetWaitApplication.clear(); 955} 956 957void InputDispatcher::commitTargetsLocked() { 958 mCurrentInputTargetsValid = true; 959} 960 961int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime, 962 const EventEntry* entry, const InputApplication* application, const InputWindow* window, 963 nsecs_t* nextWakeupTime) { 964 if (application == NULL && window == NULL) { 965 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) { 966#if DEBUG_FOCUS 967 LOGD("Waiting for system to become ready for input."); 968#endif 969 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY; 970 mInputTargetWaitStartTime = currentTime; 971 mInputTargetWaitTimeoutTime = LONG_LONG_MAX; 972 mInputTargetWaitTimeoutExpired = false; 973 mInputTargetWaitApplication.clear(); 974 } 975 } else { 976 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 977#if DEBUG_FOCUS 978 LOGD("Waiting for application to become ready for input: %s", 979 getApplicationWindowLabelLocked(application, window).string()); 980#endif 981 nsecs_t timeout = window ? window->dispatchingTimeout : 982 application ? application->dispatchingTimeout : DEFAULT_INPUT_DISPATCHING_TIMEOUT; 983 984 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY; 985 mInputTargetWaitStartTime = currentTime; 986 mInputTargetWaitTimeoutTime = currentTime + timeout; 987 mInputTargetWaitTimeoutExpired = false; 988 mInputTargetWaitApplication.clear(); 989 990 if (window && window->inputWindowHandle != NULL) { 991 mInputTargetWaitApplication = 992 window->inputWindowHandle->getInputApplicationHandle(); 993 } 994 if (mInputTargetWaitApplication == NULL && application) { 995 mInputTargetWaitApplication = application->inputApplicationHandle; 996 } 997 } 998 } 999 1000 if (mInputTargetWaitTimeoutExpired) { 1001 return INPUT_EVENT_INJECTION_TIMED_OUT; 1002 } 1003 1004 if (currentTime >= mInputTargetWaitTimeoutTime) { 1005 onANRLocked(currentTime, application, window, entry->eventTime, mInputTargetWaitStartTime); 1006 1007 // Force poll loop to wake up immediately on next iteration once we get the 1008 // ANR response back from the policy. 1009 *nextWakeupTime = LONG_LONG_MIN; 1010 return INPUT_EVENT_INJECTION_PENDING; 1011 } else { 1012 // Force poll loop to wake up when timeout is due. 1013 if (mInputTargetWaitTimeoutTime < *nextWakeupTime) { 1014 *nextWakeupTime = mInputTargetWaitTimeoutTime; 1015 } 1016 return INPUT_EVENT_INJECTION_PENDING; 1017 } 1018} 1019 1020void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout, 1021 const sp<InputChannel>& inputChannel) { 1022 if (newTimeout > 0) { 1023 // Extend the timeout. 1024 mInputTargetWaitTimeoutTime = now() + newTimeout; 1025 } else { 1026 // Give up. 1027 mInputTargetWaitTimeoutExpired = true; 1028 1029 // Release the touch targets. 1030 mTouchState.reset(); 1031 1032 // Input state will not be realistic. Mark it out of sync. 1033 if (inputChannel.get()) { 1034 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 1035 if (connectionIndex >= 0) { 1036 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1037 if (connection->status == Connection::STATUS_NORMAL) { 1038 synthesizeCancelationEventsForConnectionLocked( 1039 connection, InputState::CANCEL_ALL_EVENTS, 1040 "application not responding"); 1041 } 1042 } 1043 } 1044 } 1045} 1046 1047nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked( 1048 nsecs_t currentTime) { 1049 if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1050 return currentTime - mInputTargetWaitStartTime; 1051 } 1052 return 0; 1053} 1054 1055void InputDispatcher::resetANRTimeoutsLocked() { 1056#if DEBUG_FOCUS 1057 LOGD("Resetting ANR timeouts."); 1058#endif 1059 1060 // Reset input target wait timeout. 1061 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1062} 1063 1064int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime, 1065 const EventEntry* entry, nsecs_t* nextWakeupTime) { 1066 mCurrentInputTargets.clear(); 1067 1068 int32_t injectionResult; 1069 1070 // If there is no currently focused window and no focused application 1071 // then drop the event. 1072 if (! mFocusedWindow) { 1073 if (mFocusedApplication) { 1074#if DEBUG_FOCUS 1075 LOGD("Waiting because there is no focused window but there is a " 1076 "focused application that may eventually add a window: %s.", 1077 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1078#endif 1079 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1080 mFocusedApplication, NULL, nextWakeupTime); 1081 goto Unresponsive; 1082 } 1083 1084 LOGI("Dropping event because there is no focused window or focused application."); 1085 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1086 goto Failed; 1087 } 1088 1089 // Check permissions. 1090 if (! checkInjectionPermission(mFocusedWindow, entry->injectionState)) { 1091 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1092 goto Failed; 1093 } 1094 1095 // If the currently focused window is paused then keep waiting. 1096 if (mFocusedWindow->paused) { 1097#if DEBUG_FOCUS 1098 LOGD("Waiting because focused window is paused."); 1099#endif 1100 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1101 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1102 goto Unresponsive; 1103 } 1104 1105 // If the currently focused window is still working on previous events then keep waiting. 1106 if (! isWindowFinishedWithPreviousInputLocked(mFocusedWindow)) { 1107#if DEBUG_FOCUS 1108 LOGD("Waiting because focused window still processing previous input."); 1109#endif 1110 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1111 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1112 goto Unresponsive; 1113 } 1114 1115 // Success! Output targets. 1116 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1117 addWindowTargetLocked(mFocusedWindow, InputTarget::FLAG_FOREGROUND, BitSet32(0)); 1118 1119 // Done. 1120Failed: 1121Unresponsive: 1122 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1123 updateDispatchStatisticsLocked(currentTime, entry, 1124 injectionResult, timeSpentWaitingForApplication); 1125#if DEBUG_FOCUS 1126 LOGD("findFocusedWindow finished: injectionResult=%d, " 1127 "timeSpendWaitingForApplication=%0.1fms", 1128 injectionResult, timeSpentWaitingForApplication / 1000000.0); 1129#endif 1130 return injectionResult; 1131} 1132 1133int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime, 1134 const MotionEntry* entry, nsecs_t* nextWakeupTime, bool* outConflictingPointerActions) { 1135 enum InjectionPermission { 1136 INJECTION_PERMISSION_UNKNOWN, 1137 INJECTION_PERMISSION_GRANTED, 1138 INJECTION_PERMISSION_DENIED 1139 }; 1140 1141 mCurrentInputTargets.clear(); 1142 1143 nsecs_t startTime = now(); 1144 1145 // For security reasons, we defer updating the touch state until we are sure that 1146 // event injection will be allowed. 1147 // 1148 // FIXME In the original code, screenWasOff could never be set to true. 1149 // The reason is that the POLICY_FLAG_WOKE_HERE 1150 // and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw 1151 // EV_KEY, EV_REL and EV_ABS events. As it happens, the touch event was 1152 // actually enqueued using the policyFlags that appeared in the final EV_SYN 1153 // events upon which no preprocessing took place. So policyFlags was always 0. 1154 // In the new native input dispatcher we're a bit more careful about event 1155 // preprocessing so the touches we receive can actually have non-zero policyFlags. 1156 // Unfortunately we obtain undesirable behavior. 1157 // 1158 // Here's what happens: 1159 // 1160 // When the device dims in anticipation of going to sleep, touches 1161 // in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause 1162 // the device to brighten and reset the user activity timer. 1163 // Touches on other windows (such as the launcher window) 1164 // are dropped. Then after a moment, the device goes to sleep. Oops. 1165 // 1166 // Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE 1167 // instead of POLICY_FLAG_WOKE_HERE... 1168 // 1169 bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE; 1170 1171 int32_t action = entry->action; 1172 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 1173 1174 // Update the touch state as needed based on the properties of the touch event. 1175 int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING; 1176 InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1177 1178 bool isSplit = mTouchState.split; 1179 bool wrongDevice = mTouchState.down 1180 && (mTouchState.deviceId != entry->deviceId 1181 || mTouchState.source != entry->source); 1182 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1183 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1184 || maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1185 bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN; 1186 if (wrongDevice && !down) { 1187 mTempTouchState.copyFrom(mTouchState); 1188 } else { 1189 mTempTouchState.reset(); 1190 mTempTouchState.down = down; 1191 mTempTouchState.deviceId = entry->deviceId; 1192 mTempTouchState.source = entry->source; 1193 isSplit = false; 1194 wrongDevice = false; 1195 } 1196 } else { 1197 mTempTouchState.copyFrom(mTouchState); 1198 } 1199 if (wrongDevice) { 1200#if DEBUG_INPUT_DISPATCHER_POLICY 1201 LOGD("Dropping event because a pointer for a different device is already down."); 1202#endif 1203 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1204 goto Failed; 1205 } 1206 1207 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1208 || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN) 1209 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1210 || maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1211 /* Case 1: New splittable pointer going down, or need target for hover or scroll. */ 1212 1213 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1214 int32_t x = int32_t(entry->firstSample.pointerCoords[pointerIndex]. 1215 getAxisValue(AMOTION_EVENT_AXIS_X)); 1216 int32_t y = int32_t(entry->firstSample.pointerCoords[pointerIndex]. 1217 getAxisValue(AMOTION_EVENT_AXIS_Y)); 1218 const InputWindow* newTouchedWindow = NULL; 1219 const InputWindow* topErrorWindow = NULL; 1220 1221 // Traverse windows from front to back to find touched window and outside targets. 1222 size_t numWindows = mWindows.size(); 1223 for (size_t i = 0; i < numWindows; i++) { 1224 const InputWindow* window = & mWindows.editItemAt(i); 1225 int32_t flags = window->layoutParamsFlags; 1226 1227 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 1228 if (! topErrorWindow) { 1229 topErrorWindow = window; 1230 } 1231 } 1232 1233 if (window->visible) { 1234 if (! (flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 1235 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 1236 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 1237 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 1238 if (! screenWasOff || flags & InputWindow::FLAG_TOUCHABLE_WHEN_WAKING) { 1239 newTouchedWindow = window; 1240 } 1241 break; // found touched window, exit window loop 1242 } 1243 } 1244 1245 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1246 && (flags & InputWindow::FLAG_WATCH_OUTSIDE_TOUCH)) { 1247 int32_t outsideTargetFlags = InputTarget::FLAG_OUTSIDE; 1248 if (isWindowObscuredAtPointLocked(window, x, y)) { 1249 outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1250 } 1251 1252 mTempTouchState.addOrUpdateWindow(window, outsideTargetFlags, BitSet32(0)); 1253 } 1254 } 1255 } 1256 1257 // If there is an error window but it is not taking focus (typically because 1258 // it is invisible) then wait for it. Any other focused window may in 1259 // fact be in ANR state. 1260 if (topErrorWindow && newTouchedWindow != topErrorWindow) { 1261#if DEBUG_FOCUS 1262 LOGD("Waiting because system error window is pending."); 1263#endif 1264 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1265 NULL, NULL, nextWakeupTime); 1266 injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1267 goto Unresponsive; 1268 } 1269 1270 // Figure out whether splitting will be allowed for this window. 1271 if (newTouchedWindow && newTouchedWindow->supportsSplitTouch()) { 1272 // New window supports splitting. 1273 isSplit = true; 1274 } else if (isSplit) { 1275 // New window does not support splitting but we have already split events. 1276 // Assign the pointer to the first foreground window we find. 1277 // (May be NULL which is why we put this code block before the next check.) 1278 newTouchedWindow = mTempTouchState.getFirstForegroundWindow(); 1279 } 1280 1281 // If we did not find a touched window then fail. 1282 if (! newTouchedWindow) { 1283 if (mFocusedApplication) { 1284#if DEBUG_FOCUS 1285 LOGD("Waiting because there is no touched window but there is a " 1286 "focused application that may eventually add a new window: %s.", 1287 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1288#endif 1289 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1290 mFocusedApplication, NULL, nextWakeupTime); 1291 goto Unresponsive; 1292 } 1293 1294 LOGI("Dropping event because there is no touched window or focused application."); 1295 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1296 goto Failed; 1297 } 1298 1299 // Set target flags. 1300 int32_t targetFlags = InputTarget::FLAG_FOREGROUND; 1301 if (isSplit) { 1302 targetFlags |= InputTarget::FLAG_SPLIT; 1303 } 1304 if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) { 1305 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1306 } 1307 1308 // Update the temporary touch state. 1309 BitSet32 pointerIds; 1310 if (isSplit) { 1311 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1312 pointerIds.markBit(pointerId); 1313 } 1314 mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds); 1315 } else { 1316 /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */ 1317 1318 // If the pointer is not currently down, then ignore the event. 1319 if (! mTempTouchState.down) { 1320#if DEBUG_INPUT_DISPATCHER_POLICY 1321 LOGD("Dropping event because the pointer is not down or we previously " 1322 "dropped the pointer down event."); 1323#endif 1324 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1325 goto Failed; 1326 } 1327 } 1328 1329 // Check permission to inject into all touched foreground windows and ensure there 1330 // is at least one touched foreground window. 1331 { 1332 bool haveForegroundWindow = false; 1333 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1334 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1335 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1336 haveForegroundWindow = true; 1337 if (! checkInjectionPermission(touchedWindow.window, entry->injectionState)) { 1338 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1339 injectionPermission = INJECTION_PERMISSION_DENIED; 1340 goto Failed; 1341 } 1342 } 1343 } 1344 if (! haveForegroundWindow) { 1345#if DEBUG_INPUT_DISPATCHER_POLICY 1346 LOGD("Dropping event because there is no touched foreground window to receive it."); 1347#endif 1348 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1349 goto Failed; 1350 } 1351 1352 // Permission granted to injection into all touched foreground windows. 1353 injectionPermission = INJECTION_PERMISSION_GRANTED; 1354 } 1355 1356 // Ensure all touched foreground windows are ready for new input. 1357 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1358 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1359 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1360 // If the touched window is paused then keep waiting. 1361 if (touchedWindow.window->paused) { 1362#if DEBUG_INPUT_DISPATCHER_POLICY 1363 LOGD("Waiting because touched window is paused."); 1364#endif 1365 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1366 NULL, touchedWindow.window, nextWakeupTime); 1367 goto Unresponsive; 1368 } 1369 1370 // If the touched window is still working on previous events then keep waiting. 1371 if (! isWindowFinishedWithPreviousInputLocked(touchedWindow.window)) { 1372#if DEBUG_FOCUS 1373 LOGD("Waiting because touched window still processing previous input."); 1374#endif 1375 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1376 NULL, touchedWindow.window, nextWakeupTime); 1377 goto Unresponsive; 1378 } 1379 } 1380 } 1381 1382 // If this is the first pointer going down and the touched window has a wallpaper 1383 // then also add the touched wallpaper windows so they are locked in for the duration 1384 // of the touch gesture. 1385 // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper 1386 // engine only supports touch events. We would need to add a mechanism similar 1387 // to View.onGenericMotionEvent to enable wallpapers to handle these events. 1388 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1389 const InputWindow* foregroundWindow = mTempTouchState.getFirstForegroundWindow(); 1390 if (foregroundWindow->hasWallpaper) { 1391 for (size_t i = 0; i < mWindows.size(); i++) { 1392 const InputWindow* window = & mWindows[i]; 1393 if (window->layoutParamsType == InputWindow::TYPE_WALLPAPER) { 1394 mTempTouchState.addOrUpdateWindow(window, 1395 InputTarget::FLAG_WINDOW_IS_OBSCURED, BitSet32(0)); 1396 } 1397 } 1398 } 1399 } 1400 1401 // Success! Output targets. 1402 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1403 1404 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1405 const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i); 1406 addWindowTargetLocked(touchedWindow.window, touchedWindow.targetFlags, 1407 touchedWindow.pointerIds); 1408 } 1409 1410 // Drop the outside touch window since we will not care about them in the next iteration. 1411 mTempTouchState.removeOutsideTouchWindows(); 1412 1413Failed: 1414 // Check injection permission once and for all. 1415 if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) { 1416 if (checkInjectionPermission(NULL, entry->injectionState)) { 1417 injectionPermission = INJECTION_PERMISSION_GRANTED; 1418 } else { 1419 injectionPermission = INJECTION_PERMISSION_DENIED; 1420 } 1421 } 1422 1423 // Update final pieces of touch state if the injector had permission. 1424 if (injectionPermission == INJECTION_PERMISSION_GRANTED) { 1425 if (!wrongDevice) { 1426 if (maskedAction == AMOTION_EVENT_ACTION_UP 1427 || maskedAction == AMOTION_EVENT_ACTION_CANCEL 1428 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1429 // All pointers up or canceled. 1430 mTouchState.reset(); 1431 } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1432 // First pointer went down. 1433 if (mTouchState.down) { 1434 *outConflictingPointerActions = true; 1435#if DEBUG_FOCUS 1436 LOGD("Pointer down received while already down."); 1437#endif 1438 } 1439 mTouchState.copyFrom(mTempTouchState); 1440 } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 1441 // One pointer went up. 1442 if (isSplit) { 1443 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1444 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1445 1446 for (size_t i = 0; i < mTempTouchState.windows.size(); ) { 1447 TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i); 1448 if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) { 1449 touchedWindow.pointerIds.clearBit(pointerId); 1450 if (touchedWindow.pointerIds.isEmpty()) { 1451 mTempTouchState.windows.removeAt(i); 1452 continue; 1453 } 1454 } 1455 i += 1; 1456 } 1457 } 1458 mTouchState.copyFrom(mTempTouchState); 1459 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1460 // Discard temporary touch state since it was only valid for this action. 1461 } else { 1462 // Save changes to touch state as-is for all other actions. 1463 mTouchState.copyFrom(mTempTouchState); 1464 } 1465 } 1466 } else { 1467#if DEBUG_FOCUS 1468 LOGD("Not updating touch focus because injection was denied."); 1469#endif 1470 } 1471 1472Unresponsive: 1473 // Reset temporary touch state to ensure we release unnecessary references to input channels. 1474 mTempTouchState.reset(); 1475 1476 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1477 updateDispatchStatisticsLocked(currentTime, entry, 1478 injectionResult, timeSpentWaitingForApplication); 1479#if DEBUG_FOCUS 1480 LOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, " 1481 "timeSpentWaitingForApplication=%0.1fms", 1482 injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0); 1483#endif 1484 return injectionResult; 1485} 1486 1487void InputDispatcher::addWindowTargetLocked(const InputWindow* window, int32_t targetFlags, 1488 BitSet32 pointerIds) { 1489 mCurrentInputTargets.push(); 1490 1491 InputTarget& target = mCurrentInputTargets.editTop(); 1492 target.inputChannel = window->inputChannel; 1493 target.flags = targetFlags; 1494 target.xOffset = - window->frameLeft; 1495 target.yOffset = - window->frameTop; 1496 target.pointerIds = pointerIds; 1497} 1498 1499void InputDispatcher::addMonitoringTargetsLocked() { 1500 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 1501 mCurrentInputTargets.push(); 1502 1503 InputTarget& target = mCurrentInputTargets.editTop(); 1504 target.inputChannel = mMonitoringChannels[i]; 1505 target.flags = 0; 1506 target.xOffset = 0; 1507 target.yOffset = 0; 1508 } 1509} 1510 1511bool InputDispatcher::checkInjectionPermission(const InputWindow* window, 1512 const InjectionState* injectionState) { 1513 if (injectionState 1514 && (window == NULL || window->ownerUid != injectionState->injectorUid) 1515 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1516 if (window) { 1517 LOGW("Permission denied: injecting event from pid %d uid %d to window " 1518 "with input channel %s owned by uid %d", 1519 injectionState->injectorPid, injectionState->injectorUid, 1520 window->inputChannel->getName().string(), 1521 window->ownerUid); 1522 } else { 1523 LOGW("Permission denied: injecting event from pid %d uid %d", 1524 injectionState->injectorPid, injectionState->injectorUid); 1525 } 1526 return false; 1527 } 1528 return true; 1529} 1530 1531bool InputDispatcher::isWindowObscuredAtPointLocked( 1532 const InputWindow* window, int32_t x, int32_t y) const { 1533 size_t numWindows = mWindows.size(); 1534 for (size_t i = 0; i < numWindows; i++) { 1535 const InputWindow* other = & mWindows.itemAt(i); 1536 if (other == window) { 1537 break; 1538 } 1539 if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) { 1540 return true; 1541 } 1542 } 1543 return false; 1544} 1545 1546bool InputDispatcher::isWindowFinishedWithPreviousInputLocked(const InputWindow* window) { 1547 ssize_t connectionIndex = getConnectionIndexLocked(window->inputChannel); 1548 if (connectionIndex >= 0) { 1549 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1550 return connection->outboundQueue.isEmpty(); 1551 } else { 1552 return true; 1553 } 1554} 1555 1556String8 InputDispatcher::getApplicationWindowLabelLocked(const InputApplication* application, 1557 const InputWindow* window) { 1558 if (application) { 1559 if (window) { 1560 String8 label(application->name); 1561 label.append(" - "); 1562 label.append(window->name); 1563 return label; 1564 } else { 1565 return application->name; 1566 } 1567 } else if (window) { 1568 return window->name; 1569 } else { 1570 return String8("<unknown application or window>"); 1571 } 1572} 1573 1574void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1575 int32_t eventType = POWER_MANAGER_BUTTON_EVENT; 1576 switch (eventEntry->type) { 1577 case EventEntry::TYPE_MOTION: { 1578 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1579 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1580 return; 1581 } 1582 1583 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 1584 eventType = POWER_MANAGER_TOUCH_EVENT; 1585 } 1586 break; 1587 } 1588 case EventEntry::TYPE_KEY: { 1589 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1590 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1591 return; 1592 } 1593 break; 1594 } 1595 } 1596 1597 CommandEntry* commandEntry = postCommandLocked( 1598 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1599 commandEntry->eventTime = eventEntry->eventTime; 1600 commandEntry->userActivityEventType = eventType; 1601} 1602 1603void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1604 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1605 bool resumeWithAppendedMotionSample) { 1606#if DEBUG_DISPATCH_CYCLE 1607 LOGD("channel '%s' ~ prepareDispatchCycle - flags=%d, " 1608 "xOffset=%f, yOffset=%f, " 1609 "pointerIds=0x%x, " 1610 "resumeWithAppendedMotionSample=%s", 1611 connection->getInputChannelName(), inputTarget->flags, 1612 inputTarget->xOffset, inputTarget->yOffset, 1613 inputTarget->pointerIds.value, 1614 toString(resumeWithAppendedMotionSample)); 1615#endif 1616 1617 // Make sure we are never called for streaming when splitting across multiple windows. 1618 bool isSplit = inputTarget->flags & InputTarget::FLAG_SPLIT; 1619 assert(! (resumeWithAppendedMotionSample && isSplit)); 1620 1621 // Skip this event if the connection status is not normal. 1622 // We don't want to enqueue additional outbound events if the connection is broken. 1623 if (connection->status != Connection::STATUS_NORMAL) { 1624#if DEBUG_DISPATCH_CYCLE 1625 LOGD("channel '%s' ~ Dropping event because the channel status is %s", 1626 connection->getInputChannelName(), connection->getStatusLabel()); 1627#endif 1628 return; 1629 } 1630 1631 // Split a motion event if needed. 1632 if (isSplit) { 1633 assert(eventEntry->type == EventEntry::TYPE_MOTION); 1634 1635 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1636 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1637 MotionEntry* splitMotionEntry = splitMotionEvent( 1638 originalMotionEntry, inputTarget->pointerIds); 1639 if (!splitMotionEntry) { 1640 return; // split event was dropped 1641 } 1642#if DEBUG_FOCUS 1643 LOGD("channel '%s' ~ Split motion event.", 1644 connection->getInputChannelName()); 1645 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1646#endif 1647 eventEntry = splitMotionEntry; 1648 } 1649 } 1650 1651 // Resume the dispatch cycle with a freshly appended motion sample. 1652 // First we check that the last dispatch entry in the outbound queue is for the same 1653 // motion event to which we appended the motion sample. If we find such a dispatch 1654 // entry, and if it is currently in progress then we try to stream the new sample. 1655 bool wasEmpty = connection->outboundQueue.isEmpty(); 1656 1657 if (! wasEmpty && resumeWithAppendedMotionSample) { 1658 DispatchEntry* motionEventDispatchEntry = 1659 connection->findQueuedDispatchEntryForEvent(eventEntry); 1660 if (motionEventDispatchEntry) { 1661 // If the dispatch entry is not in progress, then we must be busy dispatching an 1662 // earlier event. Not a problem, the motion event is on the outbound queue and will 1663 // be dispatched later. 1664 if (! motionEventDispatchEntry->inProgress) { 1665#if DEBUG_BATCHING 1666 LOGD("channel '%s' ~ Not streaming because the motion event has " 1667 "not yet been dispatched. " 1668 "(Waiting for earlier events to be consumed.)", 1669 connection->getInputChannelName()); 1670#endif 1671 return; 1672 } 1673 1674 // If the dispatch entry is in progress but it already has a tail of pending 1675 // motion samples, then it must mean that the shared memory buffer filled up. 1676 // Not a problem, when this dispatch cycle is finished, we will eventually start 1677 // a new dispatch cycle to process the tail and that tail includes the newly 1678 // appended motion sample. 1679 if (motionEventDispatchEntry->tailMotionSample) { 1680#if DEBUG_BATCHING 1681 LOGD("channel '%s' ~ Not streaming because no new samples can " 1682 "be appended to the motion event in this dispatch cycle. " 1683 "(Waiting for next dispatch cycle to start.)", 1684 connection->getInputChannelName()); 1685#endif 1686 return; 1687 } 1688 1689 // The dispatch entry is in progress and is still potentially open for streaming. 1690 // Try to stream the new motion sample. This might fail if the consumer has already 1691 // consumed the motion event (or if the channel is broken). 1692 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1693 MotionSample* appendedMotionSample = motionEntry->lastSample; 1694 status_t status = connection->inputPublisher.appendMotionSample( 1695 appendedMotionSample->eventTime, appendedMotionSample->pointerCoords); 1696 if (status == OK) { 1697#if DEBUG_BATCHING 1698 LOGD("channel '%s' ~ Successfully streamed new motion sample.", 1699 connection->getInputChannelName()); 1700#endif 1701 return; 1702 } 1703 1704#if DEBUG_BATCHING 1705 if (status == NO_MEMORY) { 1706 LOGD("channel '%s' ~ Could not append motion sample to currently " 1707 "dispatched move event because the shared memory buffer is full. " 1708 "(Waiting for next dispatch cycle to start.)", 1709 connection->getInputChannelName()); 1710 } else if (status == status_t(FAILED_TRANSACTION)) { 1711 LOGD("channel '%s' ~ Could not append motion sample to currently " 1712 "dispatched move event because the event has already been consumed. " 1713 "(Waiting for next dispatch cycle to start.)", 1714 connection->getInputChannelName()); 1715 } else { 1716 LOGD("channel '%s' ~ Could not append motion sample to currently " 1717 "dispatched move event due to an error, status=%d. " 1718 "(Waiting for next dispatch cycle to start.)", 1719 connection->getInputChannelName(), status); 1720 } 1721#endif 1722 // Failed to stream. Start a new tail of pending motion samples to dispatch 1723 // in the next cycle. 1724 motionEventDispatchEntry->tailMotionSample = appendedMotionSample; 1725 return; 1726 } 1727 } 1728 1729 // This is a new event. 1730 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1731 DispatchEntry* dispatchEntry = mAllocator.obtainDispatchEntry(eventEntry, // increments ref 1732 inputTarget->flags, inputTarget->xOffset, inputTarget->yOffset); 1733 if (dispatchEntry->hasForegroundTarget()) { 1734 incrementPendingForegroundDispatchesLocked(eventEntry); 1735 } 1736 1737 // Handle the case where we could not stream a new motion sample because the consumer has 1738 // already consumed the motion event (otherwise the corresponding dispatch entry would 1739 // still be in the outbound queue for this connection). We set the head motion sample 1740 // to the list starting with the newly appended motion sample. 1741 if (resumeWithAppendedMotionSample) { 1742#if DEBUG_BATCHING 1743 LOGD("channel '%s' ~ Preparing a new dispatch cycle for additional motion samples " 1744 "that cannot be streamed because the motion event has already been consumed.", 1745 connection->getInputChannelName()); 1746#endif 1747 MotionSample* appendedMotionSample = static_cast<MotionEntry*>(eventEntry)->lastSample; 1748 dispatchEntry->headMotionSample = appendedMotionSample; 1749 } 1750 1751 // Enqueue the dispatch entry. 1752 connection->outboundQueue.enqueueAtTail(dispatchEntry); 1753 1754 // If the outbound queue was previously empty, start the dispatch cycle going. 1755 if (wasEmpty) { 1756 activateConnectionLocked(connection.get()); 1757 startDispatchCycleLocked(currentTime, connection); 1758 } 1759} 1760 1761void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 1762 const sp<Connection>& connection) { 1763#if DEBUG_DISPATCH_CYCLE 1764 LOGD("channel '%s' ~ startDispatchCycle", 1765 connection->getInputChannelName()); 1766#endif 1767 1768 assert(connection->status == Connection::STATUS_NORMAL); 1769 assert(! connection->outboundQueue.isEmpty()); 1770 1771 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1772 assert(! dispatchEntry->inProgress); 1773 1774 // Mark the dispatch entry as in progress. 1775 dispatchEntry->inProgress = true; 1776 1777 // Update the connection's input state. 1778 EventEntry* eventEntry = dispatchEntry->eventEntry; 1779 connection->inputState.trackEvent(eventEntry); 1780 1781 // Publish the event. 1782 status_t status; 1783 switch (eventEntry->type) { 1784 case EventEntry::TYPE_KEY: { 1785 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1786 1787 // Apply target flags. 1788 int32_t action = keyEntry->action; 1789 int32_t flags = keyEntry->flags; 1790 1791 // Publish the key event. 1792 status = connection->inputPublisher.publishKeyEvent(keyEntry->deviceId, keyEntry->source, 1793 action, flags, keyEntry->keyCode, keyEntry->scanCode, 1794 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 1795 keyEntry->eventTime); 1796 1797 if (status) { 1798 LOGE("channel '%s' ~ Could not publish key event, " 1799 "status=%d", connection->getInputChannelName(), status); 1800 abortBrokenDispatchCycleLocked(currentTime, connection); 1801 return; 1802 } 1803 break; 1804 } 1805 1806 case EventEntry::TYPE_MOTION: { 1807 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1808 1809 // Apply target flags. 1810 int32_t action = motionEntry->action; 1811 int32_t flags = motionEntry->flags; 1812 if (dispatchEntry->targetFlags & InputTarget::FLAG_OUTSIDE) { 1813 action = AMOTION_EVENT_ACTION_OUTSIDE; 1814 } 1815 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 1816 flags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 1817 } 1818 1819 // If headMotionSample is non-NULL, then it points to the first new sample that we 1820 // were unable to dispatch during the previous cycle so we resume dispatching from 1821 // that point in the list of motion samples. 1822 // Otherwise, we just start from the first sample of the motion event. 1823 MotionSample* firstMotionSample = dispatchEntry->headMotionSample; 1824 if (! firstMotionSample) { 1825 firstMotionSample = & motionEntry->firstSample; 1826 } 1827 1828 // Set the X and Y offset depending on the input source. 1829 float xOffset, yOffset; 1830 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 1831 xOffset = dispatchEntry->xOffset; 1832 yOffset = dispatchEntry->yOffset; 1833 } else { 1834 xOffset = 0.0f; 1835 yOffset = 0.0f; 1836 } 1837 1838 // Publish the motion event and the first motion sample. 1839 status = connection->inputPublisher.publishMotionEvent(motionEntry->deviceId, 1840 motionEntry->source, action, flags, motionEntry->edgeFlags, motionEntry->metaState, 1841 xOffset, yOffset, 1842 motionEntry->xPrecision, motionEntry->yPrecision, 1843 motionEntry->downTime, firstMotionSample->eventTime, 1844 motionEntry->pointerCount, motionEntry->pointerIds, 1845 firstMotionSample->pointerCoords); 1846 1847 if (status) { 1848 LOGE("channel '%s' ~ Could not publish motion event, " 1849 "status=%d", connection->getInputChannelName(), status); 1850 abortBrokenDispatchCycleLocked(currentTime, connection); 1851 return; 1852 } 1853 1854 // Append additional motion samples. 1855 MotionSample* nextMotionSample = firstMotionSample->next; 1856 for (; nextMotionSample != NULL; nextMotionSample = nextMotionSample->next) { 1857 status = connection->inputPublisher.appendMotionSample( 1858 nextMotionSample->eventTime, nextMotionSample->pointerCoords); 1859 if (status == NO_MEMORY) { 1860#if DEBUG_DISPATCH_CYCLE 1861 LOGD("channel '%s' ~ Shared memory buffer full. Some motion samples will " 1862 "be sent in the next dispatch cycle.", 1863 connection->getInputChannelName()); 1864#endif 1865 break; 1866 } 1867 if (status != OK) { 1868 LOGE("channel '%s' ~ Could not append motion sample " 1869 "for a reason other than out of memory, status=%d", 1870 connection->getInputChannelName(), status); 1871 abortBrokenDispatchCycleLocked(currentTime, connection); 1872 return; 1873 } 1874 } 1875 1876 // Remember the next motion sample that we could not dispatch, in case we ran out 1877 // of space in the shared memory buffer. 1878 dispatchEntry->tailMotionSample = nextMotionSample; 1879 break; 1880 } 1881 1882 default: { 1883 assert(false); 1884 } 1885 } 1886 1887 // Send the dispatch signal. 1888 status = connection->inputPublisher.sendDispatchSignal(); 1889 if (status) { 1890 LOGE("channel '%s' ~ Could not send dispatch signal, status=%d", 1891 connection->getInputChannelName(), status); 1892 abortBrokenDispatchCycleLocked(currentTime, connection); 1893 return; 1894 } 1895 1896 // Record information about the newly started dispatch cycle. 1897 connection->lastEventTime = eventEntry->eventTime; 1898 connection->lastDispatchTime = currentTime; 1899 1900 // Notify other system components. 1901 onDispatchCycleStartedLocked(currentTime, connection); 1902} 1903 1904void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 1905 const sp<Connection>& connection, bool handled) { 1906#if DEBUG_DISPATCH_CYCLE 1907 LOGD("channel '%s' ~ finishDispatchCycle - %01.1fms since event, " 1908 "%01.1fms since dispatch, handled=%s", 1909 connection->getInputChannelName(), 1910 connection->getEventLatencyMillis(currentTime), 1911 connection->getDispatchLatencyMillis(currentTime), 1912 toString(handled)); 1913#endif 1914 1915 if (connection->status == Connection::STATUS_BROKEN 1916 || connection->status == Connection::STATUS_ZOMBIE) { 1917 return; 1918 } 1919 1920 // Reset the publisher since the event has been consumed. 1921 // We do this now so that the publisher can release some of its internal resources 1922 // while waiting for the next dispatch cycle to begin. 1923 status_t status = connection->inputPublisher.reset(); 1924 if (status) { 1925 LOGE("channel '%s' ~ Could not reset publisher, status=%d", 1926 connection->getInputChannelName(), status); 1927 abortBrokenDispatchCycleLocked(currentTime, connection); 1928 return; 1929 } 1930 1931 // Notify other system components and prepare to start the next dispatch cycle. 1932 onDispatchCycleFinishedLocked(currentTime, connection, handled); 1933} 1934 1935void InputDispatcher::startNextDispatchCycleLocked(nsecs_t currentTime, 1936 const sp<Connection>& connection) { 1937 // Start the next dispatch cycle for this connection. 1938 while (! connection->outboundQueue.isEmpty()) { 1939 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1940 if (dispatchEntry->inProgress) { 1941 // Finish or resume current event in progress. 1942 if (dispatchEntry->tailMotionSample) { 1943 // We have a tail of undispatched motion samples. 1944 // Reuse the same DispatchEntry and start a new cycle. 1945 dispatchEntry->inProgress = false; 1946 dispatchEntry->headMotionSample = dispatchEntry->tailMotionSample; 1947 dispatchEntry->tailMotionSample = NULL; 1948 startDispatchCycleLocked(currentTime, connection); 1949 return; 1950 } 1951 // Finished. 1952 connection->outboundQueue.dequeueAtHead(); 1953 if (dispatchEntry->hasForegroundTarget()) { 1954 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 1955 } 1956 mAllocator.releaseDispatchEntry(dispatchEntry); 1957 } else { 1958 // If the head is not in progress, then we must have already dequeued the in 1959 // progress event, which means we actually aborted it. 1960 // So just start the next event for this connection. 1961 startDispatchCycleLocked(currentTime, connection); 1962 return; 1963 } 1964 } 1965 1966 // Outbound queue is empty, deactivate the connection. 1967 deactivateConnectionLocked(connection.get()); 1968} 1969 1970void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 1971 const sp<Connection>& connection) { 1972#if DEBUG_DISPATCH_CYCLE 1973 LOGD("channel '%s' ~ abortBrokenDispatchCycle", 1974 connection->getInputChannelName()); 1975#endif 1976 1977 // Clear the outbound queue. 1978 drainOutboundQueueLocked(connection.get()); 1979 1980 // The connection appears to be unrecoverably broken. 1981 // Ignore already broken or zombie connections. 1982 if (connection->status == Connection::STATUS_NORMAL) { 1983 connection->status = Connection::STATUS_BROKEN; 1984 1985 // Notify other system components. 1986 onDispatchCycleBrokenLocked(currentTime, connection); 1987 } 1988} 1989 1990void InputDispatcher::drainOutboundQueueLocked(Connection* connection) { 1991 while (! connection->outboundQueue.isEmpty()) { 1992 DispatchEntry* dispatchEntry = connection->outboundQueue.dequeueAtHead(); 1993 if (dispatchEntry->hasForegroundTarget()) { 1994 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 1995 } 1996 mAllocator.releaseDispatchEntry(dispatchEntry); 1997 } 1998 1999 deactivateConnectionLocked(connection); 2000} 2001 2002int InputDispatcher::handleReceiveCallback(int receiveFd, int events, void* data) { 2003 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2004 2005 { // acquire lock 2006 AutoMutex _l(d->mLock); 2007 2008 ssize_t connectionIndex = d->mConnectionsByReceiveFd.indexOfKey(receiveFd); 2009 if (connectionIndex < 0) { 2010 LOGE("Received spurious receive callback for unknown input channel. " 2011 "fd=%d, events=0x%x", receiveFd, events); 2012 return 0; // remove the callback 2013 } 2014 2015 nsecs_t currentTime = now(); 2016 2017 sp<Connection> connection = d->mConnectionsByReceiveFd.valueAt(connectionIndex); 2018 if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) { 2019 LOGE("channel '%s' ~ Consumer closed input channel or an error occurred. " 2020 "events=0x%x", connection->getInputChannelName(), events); 2021 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2022 d->runCommandsLockedInterruptible(); 2023 return 0; // remove the callback 2024 } 2025 2026 if (! (events & ALOOPER_EVENT_INPUT)) { 2027 LOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2028 "events=0x%x", connection->getInputChannelName(), events); 2029 return 1; 2030 } 2031 2032 bool handled = false; 2033 status_t status = connection->inputPublisher.receiveFinishedSignal(&handled); 2034 if (status) { 2035 LOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2036 connection->getInputChannelName(), status); 2037 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2038 d->runCommandsLockedInterruptible(); 2039 return 0; // remove the callback 2040 } 2041 2042 d->finishDispatchCycleLocked(currentTime, connection, handled); 2043 d->runCommandsLockedInterruptible(); 2044 return 1; 2045 } // release lock 2046} 2047 2048void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2049 InputState::CancelationOptions options, const char* reason) { 2050 for (size_t i = 0; i < mConnectionsByReceiveFd.size(); i++) { 2051 synthesizeCancelationEventsForConnectionLocked( 2052 mConnectionsByReceiveFd.valueAt(i), options, reason); 2053 } 2054} 2055 2056void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2057 const sp<InputChannel>& channel, InputState::CancelationOptions options, 2058 const char* reason) { 2059 ssize_t index = getConnectionIndexLocked(channel); 2060 if (index >= 0) { 2061 synthesizeCancelationEventsForConnectionLocked( 2062 mConnectionsByReceiveFd.valueAt(index), options, reason); 2063 } 2064} 2065 2066void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2067 const sp<Connection>& connection, InputState::CancelationOptions options, 2068 const char* reason) { 2069 nsecs_t currentTime = now(); 2070 2071 mTempCancelationEvents.clear(); 2072 connection->inputState.synthesizeCancelationEvents(currentTime, & mAllocator, 2073 mTempCancelationEvents, options); 2074 2075 if (! mTempCancelationEvents.isEmpty() 2076 && connection->status != Connection::STATUS_BROKEN) { 2077#if DEBUG_OUTBOUND_EVENT_DETAILS 2078 LOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2079 "with reality: %s, options=%d.", 2080 connection->getInputChannelName(), mTempCancelationEvents.size(), reason, options); 2081#endif 2082 for (size_t i = 0; i < mTempCancelationEvents.size(); i++) { 2083 EventEntry* cancelationEventEntry = mTempCancelationEvents.itemAt(i); 2084 switch (cancelationEventEntry->type) { 2085 case EventEntry::TYPE_KEY: 2086 logOutboundKeyDetailsLocked("cancel - ", 2087 static_cast<KeyEntry*>(cancelationEventEntry)); 2088 break; 2089 case EventEntry::TYPE_MOTION: 2090 logOutboundMotionDetailsLocked("cancel - ", 2091 static_cast<MotionEntry*>(cancelationEventEntry)); 2092 break; 2093 } 2094 2095 int32_t xOffset, yOffset; 2096 const InputWindow* window = getWindowLocked(connection->inputChannel); 2097 if (window) { 2098 xOffset = -window->frameLeft; 2099 yOffset = -window->frameTop; 2100 } else { 2101 xOffset = 0; 2102 yOffset = 0; 2103 } 2104 2105 DispatchEntry* cancelationDispatchEntry = 2106 mAllocator.obtainDispatchEntry(cancelationEventEntry, // increments ref 2107 0, xOffset, yOffset); 2108 connection->outboundQueue.enqueueAtTail(cancelationDispatchEntry); 2109 2110 mAllocator.releaseEventEntry(cancelationEventEntry); 2111 } 2112 2113 if (!connection->outboundQueue.headSentinel.next->inProgress) { 2114 startDispatchCycleLocked(currentTime, connection); 2115 } 2116 } 2117} 2118 2119InputDispatcher::MotionEntry* 2120InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2121 assert(pointerIds.value != 0); 2122 2123 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2124 int32_t splitPointerIds[MAX_POINTERS]; 2125 PointerCoords splitPointerCoords[MAX_POINTERS]; 2126 2127 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2128 uint32_t splitPointerCount = 0; 2129 2130 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2131 originalPointerIndex++) { 2132 int32_t pointerId = uint32_t(originalMotionEntry->pointerIds[originalPointerIndex]); 2133 if (pointerIds.hasBit(pointerId)) { 2134 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2135 splitPointerIds[splitPointerCount] = pointerId; 2136 splitPointerCoords[splitPointerCount] = 2137 originalMotionEntry->firstSample.pointerCoords[originalPointerIndex]; 2138 splitPointerCount += 1; 2139 } 2140 } 2141 2142 if (splitPointerCount != pointerIds.count()) { 2143 // This is bad. We are missing some of the pointers that we expected to deliver. 2144 // Most likely this indicates that we received an ACTION_MOVE events that has 2145 // different pointer ids than we expected based on the previous ACTION_DOWN 2146 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2147 // in this way. 2148 LOGW("Dropping split motion event because the pointer count is %d but " 2149 "we expected there to be %d pointers. This probably means we received " 2150 "a broken sequence of pointer ids from the input device.", 2151 splitPointerCount, pointerIds.count()); 2152 return NULL; 2153 } 2154 2155 int32_t action = originalMotionEntry->action; 2156 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2157 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2158 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2159 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2160 int32_t pointerId = originalMotionEntry->pointerIds[originalPointerIndex]; 2161 if (pointerIds.hasBit(pointerId)) { 2162 if (pointerIds.count() == 1) { 2163 // The first/last pointer went down/up. 2164 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2165 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2166 } else { 2167 // A secondary pointer went down/up. 2168 uint32_t splitPointerIndex = 0; 2169 while (pointerId != splitPointerIds[splitPointerIndex]) { 2170 splitPointerIndex += 1; 2171 } 2172 action = maskedAction | (splitPointerIndex 2173 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2174 } 2175 } else { 2176 // An unrelated pointer changed. 2177 action = AMOTION_EVENT_ACTION_MOVE; 2178 } 2179 } 2180 2181 MotionEntry* splitMotionEntry = mAllocator.obtainMotionEntry( 2182 originalMotionEntry->eventTime, 2183 originalMotionEntry->deviceId, 2184 originalMotionEntry->source, 2185 originalMotionEntry->policyFlags, 2186 action, 2187 originalMotionEntry->flags, 2188 originalMotionEntry->metaState, 2189 originalMotionEntry->edgeFlags, 2190 originalMotionEntry->xPrecision, 2191 originalMotionEntry->yPrecision, 2192 originalMotionEntry->downTime, 2193 splitPointerCount, splitPointerIds, splitPointerCoords); 2194 2195 for (MotionSample* originalMotionSample = originalMotionEntry->firstSample.next; 2196 originalMotionSample != NULL; originalMotionSample = originalMotionSample->next) { 2197 for (uint32_t splitPointerIndex = 0; splitPointerIndex < splitPointerCount; 2198 splitPointerIndex++) { 2199 uint32_t originalPointerIndex = splitPointerIndexMap[splitPointerIndex]; 2200 splitPointerCoords[splitPointerIndex] = 2201 originalMotionSample->pointerCoords[originalPointerIndex]; 2202 } 2203 2204 mAllocator.appendMotionSample(splitMotionEntry, originalMotionSample->eventTime, 2205 splitPointerCoords); 2206 } 2207 2208 return splitMotionEntry; 2209} 2210 2211void InputDispatcher::notifyConfigurationChanged(nsecs_t eventTime) { 2212#if DEBUG_INBOUND_EVENT_DETAILS 2213 LOGD("notifyConfigurationChanged - eventTime=%lld", eventTime); 2214#endif 2215 2216 bool needWake; 2217 { // acquire lock 2218 AutoMutex _l(mLock); 2219 2220 ConfigurationChangedEntry* newEntry = mAllocator.obtainConfigurationChangedEntry(eventTime); 2221 needWake = enqueueInboundEventLocked(newEntry); 2222 } // release lock 2223 2224 if (needWake) { 2225 mLooper->wake(); 2226 } 2227} 2228 2229void InputDispatcher::notifyKey(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2230 uint32_t policyFlags, int32_t action, int32_t flags, 2231 int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime) { 2232#if DEBUG_INBOUND_EVENT_DETAILS 2233 LOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2234 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2235 eventTime, deviceId, source, policyFlags, action, flags, 2236 keyCode, scanCode, metaState, downTime); 2237#endif 2238 if (! validateKeyEvent(action)) { 2239 return; 2240 } 2241 2242 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2243 policyFlags |= POLICY_FLAG_VIRTUAL; 2244 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2245 } 2246 2247 policyFlags |= POLICY_FLAG_TRUSTED; 2248 2249 KeyEvent event; 2250 event.initialize(deviceId, source, action, flags, keyCode, scanCode, 2251 metaState, 0, downTime, eventTime); 2252 2253 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2254 2255 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2256 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2257 } 2258 2259 bool needWake; 2260 { // acquire lock 2261 AutoMutex _l(mLock); 2262 2263 int32_t repeatCount = 0; 2264 KeyEntry* newEntry = mAllocator.obtainKeyEntry(eventTime, 2265 deviceId, source, policyFlags, action, flags, keyCode, scanCode, 2266 metaState, repeatCount, downTime); 2267 2268 needWake = enqueueInboundEventLocked(newEntry); 2269 } // release lock 2270 2271 if (needWake) { 2272 mLooper->wake(); 2273 } 2274} 2275 2276void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2277 uint32_t policyFlags, int32_t action, int32_t flags, int32_t metaState, int32_t edgeFlags, 2278 uint32_t pointerCount, const int32_t* pointerIds, const PointerCoords* pointerCoords, 2279 float xPrecision, float yPrecision, nsecs_t downTime) { 2280#if DEBUG_INBOUND_EVENT_DETAILS 2281 LOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2282 "action=0x%x, flags=0x%x, metaState=0x%x, edgeFlags=0x%x, " 2283 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2284 eventTime, deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2285 xPrecision, yPrecision, downTime); 2286 for (uint32_t i = 0; i < pointerCount; i++) { 2287 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 2288 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2289 "orientation=%f", 2290 i, pointerIds[i], 2291 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2292 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2293 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2294 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2295 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2296 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2297 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2298 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2299 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2300 } 2301#endif 2302 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2303 return; 2304 } 2305 2306 policyFlags |= POLICY_FLAG_TRUSTED; 2307 mPolicy->interceptGenericBeforeQueueing(eventTime, /*byref*/ policyFlags); 2308 2309 bool needWake; 2310 { // acquire lock 2311 AutoMutex _l(mLock); 2312 2313 // Attempt batching and streaming of move events. 2314 if (action == AMOTION_EVENT_ACTION_MOVE 2315 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2316 // BATCHING CASE 2317 // 2318 // Try to append a move sample to the tail of the inbound queue for this device. 2319 // Give up if we encounter a non-move motion event for this device since that 2320 // means we cannot append any new samples until a new motion event has started. 2321 for (EventEntry* entry = mInboundQueue.tailSentinel.prev; 2322 entry != & mInboundQueue.headSentinel; entry = entry->prev) { 2323 if (entry->type != EventEntry::TYPE_MOTION) { 2324 // Keep looking for motion events. 2325 continue; 2326 } 2327 2328 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 2329 if (motionEntry->deviceId != deviceId) { 2330 // Keep looking for this device. 2331 continue; 2332 } 2333 2334 if (motionEntry->action != action 2335 || motionEntry->source != source 2336 || motionEntry->pointerCount != pointerCount 2337 || motionEntry->isInjected()) { 2338 // Last motion event in the queue for this device is not compatible for 2339 // appending new samples. Stop here. 2340 goto NoBatchingOrStreaming; 2341 } 2342 2343 // The last motion event is a move and is compatible for appending. 2344 // Do the batching magic. 2345 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2346#if DEBUG_BATCHING 2347 LOGD("Appended motion sample onto batch for most recent " 2348 "motion event for this device in the inbound queue."); 2349#endif 2350 return; // done! 2351 } 2352 2353 // STREAMING CASE 2354 // 2355 // There is no pending motion event (of any kind) for this device in the inbound queue. 2356 // Search the outbound queue for the current foreground targets to find a dispatched 2357 // motion event that is still in progress. If found, then, appen the new sample to 2358 // that event and push it out to all current targets. The logic in 2359 // prepareDispatchCycleLocked takes care of the case where some targets may 2360 // already have consumed the motion event by starting a new dispatch cycle if needed. 2361 if (mCurrentInputTargetsValid) { 2362 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 2363 const InputTarget& inputTarget = mCurrentInputTargets[i]; 2364 if ((inputTarget.flags & InputTarget::FLAG_FOREGROUND) == 0) { 2365 // Skip non-foreground targets. We only want to stream if there is at 2366 // least one foreground target whose dispatch is still in progress. 2367 continue; 2368 } 2369 2370 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 2371 if (connectionIndex < 0) { 2372 // Connection must no longer be valid. 2373 continue; 2374 } 2375 2376 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 2377 if (connection->outboundQueue.isEmpty()) { 2378 // This foreground target has an empty outbound queue. 2379 continue; 2380 } 2381 2382 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2383 if (! dispatchEntry->inProgress 2384 || dispatchEntry->eventEntry->type != EventEntry::TYPE_MOTION 2385 || dispatchEntry->isSplit()) { 2386 // No motion event is being dispatched, or it is being split across 2387 // windows in which case we cannot stream. 2388 continue; 2389 } 2390 2391 MotionEntry* motionEntry = static_cast<MotionEntry*>( 2392 dispatchEntry->eventEntry); 2393 if (motionEntry->action != action 2394 || motionEntry->deviceId != deviceId 2395 || motionEntry->source != source 2396 || motionEntry->pointerCount != pointerCount 2397 || motionEntry->isInjected()) { 2398 // The motion event is not compatible with this move. 2399 continue; 2400 } 2401 2402 // Hurray! This foreground target is currently dispatching a move event 2403 // that we can stream onto. Append the motion sample and resume dispatch. 2404 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2405#if DEBUG_BATCHING 2406 LOGD("Appended motion sample onto batch for most recently dispatched " 2407 "motion event for this device in the outbound queues. " 2408 "Attempting to stream the motion sample."); 2409#endif 2410 nsecs_t currentTime = now(); 2411 dispatchEventToCurrentInputTargetsLocked(currentTime, motionEntry, 2412 true /*resumeWithAppendedMotionSample*/); 2413 2414 runCommandsLockedInterruptible(); 2415 return; // done! 2416 } 2417 } 2418 2419NoBatchingOrStreaming:; 2420 } 2421 2422 // Just enqueue a new motion event. 2423 MotionEntry* newEntry = mAllocator.obtainMotionEntry(eventTime, 2424 deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2425 xPrecision, yPrecision, downTime, 2426 pointerCount, pointerIds, pointerCoords); 2427 2428 needWake = enqueueInboundEventLocked(newEntry); 2429 } // release lock 2430 2431 if (needWake) { 2432 mLooper->wake(); 2433 } 2434} 2435 2436void InputDispatcher::notifySwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, 2437 uint32_t policyFlags) { 2438#if DEBUG_INBOUND_EVENT_DETAILS 2439 LOGD("notifySwitch - switchCode=%d, switchValue=%d, policyFlags=0x%x", 2440 switchCode, switchValue, policyFlags); 2441#endif 2442 2443 policyFlags |= POLICY_FLAG_TRUSTED; 2444 mPolicy->notifySwitch(when, switchCode, switchValue, policyFlags); 2445} 2446 2447int32_t InputDispatcher::injectInputEvent(const InputEvent* event, 2448 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis) { 2449#if DEBUG_INBOUND_EVENT_DETAILS 2450 LOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2451 "syncMode=%d, timeoutMillis=%d", 2452 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis); 2453#endif 2454 2455 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2456 2457 uint32_t policyFlags = POLICY_FLAG_INJECTED; 2458 if (hasInjectionPermission(injectorPid, injectorUid)) { 2459 policyFlags |= POLICY_FLAG_TRUSTED; 2460 } 2461 2462 EventEntry* injectedEntry; 2463 switch (event->getType()) { 2464 case AINPUT_EVENT_TYPE_KEY: { 2465 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2466 int32_t action = keyEvent->getAction(); 2467 if (! validateKeyEvent(action)) { 2468 return INPUT_EVENT_INJECTION_FAILED; 2469 } 2470 2471 int32_t flags = keyEvent->getFlags(); 2472 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2473 policyFlags |= POLICY_FLAG_VIRTUAL; 2474 } 2475 2476 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2477 2478 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2479 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2480 } 2481 2482 mLock.lock(); 2483 injectedEntry = mAllocator.obtainKeyEntry(keyEvent->getEventTime(), 2484 keyEvent->getDeviceId(), keyEvent->getSource(), 2485 policyFlags, action, flags, 2486 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2487 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2488 break; 2489 } 2490 2491 case AINPUT_EVENT_TYPE_MOTION: { 2492 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2493 int32_t action = motionEvent->getAction(); 2494 size_t pointerCount = motionEvent->getPointerCount(); 2495 const int32_t* pointerIds = motionEvent->getPointerIds(); 2496 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2497 return INPUT_EVENT_INJECTION_FAILED; 2498 } 2499 2500 nsecs_t eventTime = motionEvent->getEventTime(); 2501 mPolicy->interceptGenericBeforeQueueing(eventTime, /*byref*/ policyFlags); 2502 2503 mLock.lock(); 2504 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2505 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2506 MotionEntry* motionEntry = mAllocator.obtainMotionEntry(*sampleEventTimes, 2507 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2508 action, motionEvent->getFlags(), 2509 motionEvent->getMetaState(), motionEvent->getEdgeFlags(), 2510 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2511 motionEvent->getDownTime(), uint32_t(pointerCount), 2512 pointerIds, samplePointerCoords); 2513 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2514 sampleEventTimes += 1; 2515 samplePointerCoords += pointerCount; 2516 mAllocator.appendMotionSample(motionEntry, *sampleEventTimes, samplePointerCoords); 2517 } 2518 injectedEntry = motionEntry; 2519 break; 2520 } 2521 2522 default: 2523 LOGW("Cannot inject event of type %d", event->getType()); 2524 return INPUT_EVENT_INJECTION_FAILED; 2525 } 2526 2527 InjectionState* injectionState = mAllocator.obtainInjectionState(injectorPid, injectorUid); 2528 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2529 injectionState->injectionIsAsync = true; 2530 } 2531 2532 injectionState->refCount += 1; 2533 injectedEntry->injectionState = injectionState; 2534 2535 bool needWake = enqueueInboundEventLocked(injectedEntry); 2536 mLock.unlock(); 2537 2538 if (needWake) { 2539 mLooper->wake(); 2540 } 2541 2542 int32_t injectionResult; 2543 { // acquire lock 2544 AutoMutex _l(mLock); 2545 2546 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2547 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 2548 } else { 2549 for (;;) { 2550 injectionResult = injectionState->injectionResult; 2551 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 2552 break; 2553 } 2554 2555 nsecs_t remainingTimeout = endTime - now(); 2556 if (remainingTimeout <= 0) { 2557#if DEBUG_INJECTION 2558 LOGD("injectInputEvent - Timed out waiting for injection result " 2559 "to become available."); 2560#endif 2561 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2562 break; 2563 } 2564 2565 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 2566 } 2567 2568 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 2569 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 2570 while (injectionState->pendingForegroundDispatches != 0) { 2571#if DEBUG_INJECTION 2572 LOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 2573 injectionState->pendingForegroundDispatches); 2574#endif 2575 nsecs_t remainingTimeout = endTime - now(); 2576 if (remainingTimeout <= 0) { 2577#if DEBUG_INJECTION 2578 LOGD("injectInputEvent - Timed out waiting for pending foreground " 2579 "dispatches to finish."); 2580#endif 2581 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2582 break; 2583 } 2584 2585 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 2586 } 2587 } 2588 } 2589 2590 mAllocator.releaseInjectionState(injectionState); 2591 } // release lock 2592 2593#if DEBUG_INJECTION 2594 LOGD("injectInputEvent - Finished with result %d. " 2595 "injectorPid=%d, injectorUid=%d", 2596 injectionResult, injectorPid, injectorUid); 2597#endif 2598 2599 return injectionResult; 2600} 2601 2602bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 2603 return injectorUid == 0 2604 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 2605} 2606 2607void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 2608 InjectionState* injectionState = entry->injectionState; 2609 if (injectionState) { 2610#if DEBUG_INJECTION 2611 LOGD("Setting input event injection result to %d. " 2612 "injectorPid=%d, injectorUid=%d", 2613 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 2614#endif 2615 2616 if (injectionState->injectionIsAsync) { 2617 // Log the outcome since the injector did not wait for the injection result. 2618 switch (injectionResult) { 2619 case INPUT_EVENT_INJECTION_SUCCEEDED: 2620 LOGV("Asynchronous input event injection succeeded."); 2621 break; 2622 case INPUT_EVENT_INJECTION_FAILED: 2623 LOGW("Asynchronous input event injection failed."); 2624 break; 2625 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 2626 LOGW("Asynchronous input event injection permission denied."); 2627 break; 2628 case INPUT_EVENT_INJECTION_TIMED_OUT: 2629 LOGW("Asynchronous input event injection timed out."); 2630 break; 2631 } 2632 } 2633 2634 injectionState->injectionResult = injectionResult; 2635 mInjectionResultAvailableCondition.broadcast(); 2636 } 2637} 2638 2639void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2640 InjectionState* injectionState = entry->injectionState; 2641 if (injectionState) { 2642 injectionState->pendingForegroundDispatches += 1; 2643 } 2644} 2645 2646void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2647 InjectionState* injectionState = entry->injectionState; 2648 if (injectionState) { 2649 injectionState->pendingForegroundDispatches -= 1; 2650 2651 if (injectionState->pendingForegroundDispatches == 0) { 2652 mInjectionSyncFinishedCondition.broadcast(); 2653 } 2654 } 2655} 2656 2657const InputWindow* InputDispatcher::getWindowLocked(const sp<InputChannel>& inputChannel) { 2658 for (size_t i = 0; i < mWindows.size(); i++) { 2659 const InputWindow* window = & mWindows[i]; 2660 if (window->inputChannel == inputChannel) { 2661 return window; 2662 } 2663 } 2664 return NULL; 2665} 2666 2667void InputDispatcher::setInputWindows(const Vector<InputWindow>& inputWindows) { 2668#if DEBUG_FOCUS 2669 LOGD("setInputWindows"); 2670#endif 2671 { // acquire lock 2672 AutoMutex _l(mLock); 2673 2674 // Clear old window pointers. 2675 sp<InputChannel> oldFocusedWindowChannel; 2676 if (mFocusedWindow) { 2677 oldFocusedWindowChannel = mFocusedWindow->inputChannel; 2678 mFocusedWindow = NULL; 2679 } 2680 2681 mWindows.clear(); 2682 2683 // Loop over new windows and rebuild the necessary window pointers for 2684 // tracking focus and touch. 2685 mWindows.appendVector(inputWindows); 2686 2687 size_t numWindows = mWindows.size(); 2688 for (size_t i = 0; i < numWindows; i++) { 2689 const InputWindow* window = & mWindows.itemAt(i); 2690 if (window->hasFocus) { 2691 mFocusedWindow = window; 2692 break; 2693 } 2694 } 2695 2696 if (oldFocusedWindowChannel != NULL) { 2697 if (!mFocusedWindow || oldFocusedWindowChannel != mFocusedWindow->inputChannel) { 2698#if DEBUG_FOCUS 2699 LOGD("Focus left window: %s", 2700 oldFocusedWindowChannel->getName().string()); 2701#endif 2702 synthesizeCancelationEventsForInputChannelLocked(oldFocusedWindowChannel, 2703 InputState::CANCEL_NON_POINTER_EVENTS, "focus left window"); 2704 oldFocusedWindowChannel.clear(); 2705 } 2706 } 2707 if (mFocusedWindow && oldFocusedWindowChannel == NULL) { 2708#if DEBUG_FOCUS 2709 LOGD("Focus entered window: %s", 2710 mFocusedWindow->inputChannel->getName().string()); 2711#endif 2712 } 2713 2714 for (size_t i = 0; i < mTouchState.windows.size(); ) { 2715 TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i); 2716 const InputWindow* window = getWindowLocked(touchedWindow.channel); 2717 if (window) { 2718 touchedWindow.window = window; 2719 i += 1; 2720 } else { 2721#if DEBUG_FOCUS 2722 LOGD("Touched window was removed: %s", touchedWindow.channel->getName().string()); 2723#endif 2724 synthesizeCancelationEventsForInputChannelLocked(touchedWindow.channel, 2725 InputState::CANCEL_POINTER_EVENTS, "touched window was removed"); 2726 mTouchState.windows.removeAt(i); 2727 } 2728 } 2729 2730#if DEBUG_FOCUS 2731 //logDispatchStateLocked(); 2732#endif 2733 } // release lock 2734 2735 // Wake up poll loop since it may need to make new input dispatching choices. 2736 mLooper->wake(); 2737} 2738 2739void InputDispatcher::setFocusedApplication(const InputApplication* inputApplication) { 2740#if DEBUG_FOCUS 2741 LOGD("setFocusedApplication"); 2742#endif 2743 { // acquire lock 2744 AutoMutex _l(mLock); 2745 2746 releaseFocusedApplicationLocked(); 2747 2748 if (inputApplication) { 2749 mFocusedApplicationStorage = *inputApplication; 2750 mFocusedApplication = & mFocusedApplicationStorage; 2751 } 2752 2753#if DEBUG_FOCUS 2754 //logDispatchStateLocked(); 2755#endif 2756 } // release lock 2757 2758 // Wake up poll loop since it may need to make new input dispatching choices. 2759 mLooper->wake(); 2760} 2761 2762void InputDispatcher::releaseFocusedApplicationLocked() { 2763 if (mFocusedApplication) { 2764 mFocusedApplication = NULL; 2765 mFocusedApplicationStorage.inputApplicationHandle.clear(); 2766 } 2767} 2768 2769void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 2770#if DEBUG_FOCUS 2771 LOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 2772#endif 2773 2774 bool changed; 2775 { // acquire lock 2776 AutoMutex _l(mLock); 2777 2778 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 2779 if (mDispatchFrozen && !frozen) { 2780 resetANRTimeoutsLocked(); 2781 } 2782 2783 if (mDispatchEnabled && !enabled) { 2784 resetAndDropEverythingLocked("dispatcher is being disabled"); 2785 } 2786 2787 mDispatchEnabled = enabled; 2788 mDispatchFrozen = frozen; 2789 changed = true; 2790 } else { 2791 changed = false; 2792 } 2793 2794#if DEBUG_FOCUS 2795 //logDispatchStateLocked(); 2796#endif 2797 } // release lock 2798 2799 if (changed) { 2800 // Wake up poll loop since it may need to make new input dispatching choices. 2801 mLooper->wake(); 2802 } 2803} 2804 2805bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 2806 const sp<InputChannel>& toChannel) { 2807#if DEBUG_FOCUS 2808 LOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 2809 fromChannel->getName().string(), toChannel->getName().string()); 2810#endif 2811 { // acquire lock 2812 AutoMutex _l(mLock); 2813 2814 const InputWindow* fromWindow = getWindowLocked(fromChannel); 2815 const InputWindow* toWindow = getWindowLocked(toChannel); 2816 if (! fromWindow || ! toWindow) { 2817#if DEBUG_FOCUS 2818 LOGD("Cannot transfer focus because from or to window not found."); 2819#endif 2820 return false; 2821 } 2822 if (fromWindow == toWindow) { 2823#if DEBUG_FOCUS 2824 LOGD("Trivial transfer to same window."); 2825#endif 2826 return true; 2827 } 2828 2829 bool found = false; 2830 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 2831 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 2832 if (touchedWindow.window == fromWindow) { 2833 int32_t oldTargetFlags = touchedWindow.targetFlags; 2834 BitSet32 pointerIds = touchedWindow.pointerIds; 2835 2836 mTouchState.windows.removeAt(i); 2837 2838 int32_t newTargetFlags = oldTargetFlags 2839 & (InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_SPLIT); 2840 mTouchState.addOrUpdateWindow(toWindow, newTargetFlags, pointerIds); 2841 2842 found = true; 2843 break; 2844 } 2845 } 2846 2847 if (! found) { 2848#if DEBUG_FOCUS 2849 LOGD("Focus transfer failed because from window did not have focus."); 2850#endif 2851 return false; 2852 } 2853 2854 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 2855 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 2856 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 2857 sp<Connection> fromConnection = mConnectionsByReceiveFd.valueAt(fromConnectionIndex); 2858 sp<Connection> toConnection = mConnectionsByReceiveFd.valueAt(toConnectionIndex); 2859 2860 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 2861 synthesizeCancelationEventsForConnectionLocked(fromConnection, 2862 InputState::CANCEL_POINTER_EVENTS, 2863 "transferring touch focus from this window to another window"); 2864 } 2865 2866#if DEBUG_FOCUS 2867 logDispatchStateLocked(); 2868#endif 2869 } // release lock 2870 2871 // Wake up poll loop since it may need to make new input dispatching choices. 2872 mLooper->wake(); 2873 return true; 2874} 2875 2876void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 2877#if DEBUG_FOCUS 2878 LOGD("Resetting and dropping all events (%s).", reason); 2879#endif 2880 2881 synthesizeCancelationEventsForAllConnectionsLocked(InputState::CANCEL_ALL_EVENTS, reason); 2882 2883 resetKeyRepeatLocked(); 2884 releasePendingEventLocked(); 2885 drainInboundQueueLocked(); 2886 resetTargetsLocked(); 2887 2888 mTouchState.reset(); 2889} 2890 2891void InputDispatcher::logDispatchStateLocked() { 2892 String8 dump; 2893 dumpDispatchStateLocked(dump); 2894 2895 char* text = dump.lockBuffer(dump.size()); 2896 char* start = text; 2897 while (*start != '\0') { 2898 char* end = strchr(start, '\n'); 2899 if (*end == '\n') { 2900 *(end++) = '\0'; 2901 } 2902 LOGD("%s", start); 2903 start = end; 2904 } 2905} 2906 2907void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 2908 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 2909 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 2910 2911 if (mFocusedApplication) { 2912 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 2913 mFocusedApplication->name.string(), 2914 mFocusedApplication->dispatchingTimeout / 1000000.0); 2915 } else { 2916 dump.append(INDENT "FocusedApplication: <null>\n"); 2917 } 2918 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 2919 mFocusedWindow != NULL ? mFocusedWindow->name.string() : "<null>"); 2920 2921 dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down)); 2922 dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split)); 2923 dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId); 2924 dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source); 2925 if (!mTouchState.windows.isEmpty()) { 2926 dump.append(INDENT "TouchedWindows:\n"); 2927 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 2928 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 2929 dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 2930 i, touchedWindow.window->name.string(), touchedWindow.pointerIds.value, 2931 touchedWindow.targetFlags); 2932 } 2933 } else { 2934 dump.append(INDENT "TouchedWindows: <none>\n"); 2935 } 2936 2937 if (!mWindows.isEmpty()) { 2938 dump.append(INDENT "Windows:\n"); 2939 for (size_t i = 0; i < mWindows.size(); i++) { 2940 const InputWindow& window = mWindows[i]; 2941 dump.appendFormat(INDENT2 "%d: name='%s', paused=%s, hasFocus=%s, hasWallpaper=%s, " 2942 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 2943 "frame=[%d,%d][%d,%d], " 2944 "touchableRegion=", 2945 i, window.name.string(), 2946 toString(window.paused), 2947 toString(window.hasFocus), 2948 toString(window.hasWallpaper), 2949 toString(window.visible), 2950 toString(window.canReceiveKeys), 2951 window.layoutParamsFlags, window.layoutParamsType, 2952 window.layer, 2953 window.frameLeft, window.frameTop, 2954 window.frameRight, window.frameBottom); 2955 dumpRegion(dump, window.touchableRegion); 2956 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 2957 window.ownerPid, window.ownerUid, 2958 window.dispatchingTimeout / 1000000.0); 2959 } 2960 } else { 2961 dump.append(INDENT "Windows: <none>\n"); 2962 } 2963 2964 if (!mMonitoringChannels.isEmpty()) { 2965 dump.append(INDENT "MonitoringChannels:\n"); 2966 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 2967 const sp<InputChannel>& channel = mMonitoringChannels[i]; 2968 dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string()); 2969 } 2970 } else { 2971 dump.append(INDENT "MonitoringChannels: <none>\n"); 2972 } 2973 2974 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 2975 2976 if (!mActiveConnections.isEmpty()) { 2977 dump.append(INDENT "ActiveConnections:\n"); 2978 for (size_t i = 0; i < mActiveConnections.size(); i++) { 2979 const Connection* connection = mActiveConnections[i]; 2980 dump.appendFormat(INDENT2 "%d: '%s', status=%s, outboundQueueLength=%u, " 2981 "inputState.isNeutral=%s\n", 2982 i, connection->getInputChannelName(), connection->getStatusLabel(), 2983 connection->outboundQueue.count(), 2984 toString(connection->inputState.isNeutral())); 2985 } 2986 } else { 2987 dump.append(INDENT "ActiveConnections: <none>\n"); 2988 } 2989 2990 if (isAppSwitchPendingLocked()) { 2991 dump.appendFormat(INDENT "AppSwitch: pending, due in %01.1fms\n", 2992 (mAppSwitchDueTime - now()) / 1000000.0); 2993 } else { 2994 dump.append(INDENT "AppSwitch: not pending\n"); 2995 } 2996} 2997 2998status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 2999 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3000#if DEBUG_REGISTRATION 3001 LOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3002 toString(monitor)); 3003#endif 3004 3005 { // acquire lock 3006 AutoMutex _l(mLock); 3007 3008 if (getConnectionIndexLocked(inputChannel) >= 0) { 3009 LOGW("Attempted to register already registered input channel '%s'", 3010 inputChannel->getName().string()); 3011 return BAD_VALUE; 3012 } 3013 3014 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle); 3015 status_t status = connection->initialize(); 3016 if (status) { 3017 LOGE("Failed to initialize input publisher for input channel '%s', status=%d", 3018 inputChannel->getName().string(), status); 3019 return status; 3020 } 3021 3022 int32_t receiveFd = inputChannel->getReceivePipeFd(); 3023 mConnectionsByReceiveFd.add(receiveFd, connection); 3024 3025 if (monitor) { 3026 mMonitoringChannels.push(inputChannel); 3027 } 3028 3029 mLooper->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3030 3031 runCommandsLockedInterruptible(); 3032 } // release lock 3033 return OK; 3034} 3035 3036status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3037#if DEBUG_REGISTRATION 3038 LOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3039#endif 3040 3041 { // acquire lock 3042 AutoMutex _l(mLock); 3043 3044 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3045 if (connectionIndex < 0) { 3046 LOGW("Attempted to unregister already unregistered input channel '%s'", 3047 inputChannel->getName().string()); 3048 return BAD_VALUE; 3049 } 3050 3051 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3052 mConnectionsByReceiveFd.removeItemsAt(connectionIndex); 3053 3054 connection->status = Connection::STATUS_ZOMBIE; 3055 3056 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3057 if (mMonitoringChannels[i] == inputChannel) { 3058 mMonitoringChannels.removeAt(i); 3059 break; 3060 } 3061 } 3062 3063 mLooper->removeFd(inputChannel->getReceivePipeFd()); 3064 3065 nsecs_t currentTime = now(); 3066 abortBrokenDispatchCycleLocked(currentTime, connection); 3067 3068 runCommandsLockedInterruptible(); 3069 } // release lock 3070 3071 // Wake the poll loop because removing the connection may have changed the current 3072 // synchronization state. 3073 mLooper->wake(); 3074 return OK; 3075} 3076 3077ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3078 ssize_t connectionIndex = mConnectionsByReceiveFd.indexOfKey(inputChannel->getReceivePipeFd()); 3079 if (connectionIndex >= 0) { 3080 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3081 if (connection->inputChannel.get() == inputChannel.get()) { 3082 return connectionIndex; 3083 } 3084 } 3085 3086 return -1; 3087} 3088 3089void InputDispatcher::activateConnectionLocked(Connection* connection) { 3090 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3091 if (mActiveConnections.itemAt(i) == connection) { 3092 return; 3093 } 3094 } 3095 mActiveConnections.add(connection); 3096} 3097 3098void InputDispatcher::deactivateConnectionLocked(Connection* connection) { 3099 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3100 if (mActiveConnections.itemAt(i) == connection) { 3101 mActiveConnections.removeAt(i); 3102 return; 3103 } 3104 } 3105} 3106 3107void InputDispatcher::onDispatchCycleStartedLocked( 3108 nsecs_t currentTime, const sp<Connection>& connection) { 3109} 3110 3111void InputDispatcher::onDispatchCycleFinishedLocked( 3112 nsecs_t currentTime, const sp<Connection>& connection, bool handled) { 3113 CommandEntry* commandEntry = postCommandLocked( 3114 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3115 commandEntry->connection = connection; 3116 commandEntry->handled = handled; 3117} 3118 3119void InputDispatcher::onDispatchCycleBrokenLocked( 3120 nsecs_t currentTime, const sp<Connection>& connection) { 3121 LOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3122 connection->getInputChannelName()); 3123 3124 CommandEntry* commandEntry = postCommandLocked( 3125 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3126 commandEntry->connection = connection; 3127} 3128 3129void InputDispatcher::onANRLocked( 3130 nsecs_t currentTime, const InputApplication* application, const InputWindow* window, 3131 nsecs_t eventTime, nsecs_t waitStartTime) { 3132 LOGI("Application is not responding: %s. " 3133 "%01.1fms since event, %01.1fms since wait started", 3134 getApplicationWindowLabelLocked(application, window).string(), 3135 (currentTime - eventTime) / 1000000.0, 3136 (currentTime - waitStartTime) / 1000000.0); 3137 3138 CommandEntry* commandEntry = postCommandLocked( 3139 & InputDispatcher::doNotifyANRLockedInterruptible); 3140 if (application) { 3141 commandEntry->inputApplicationHandle = application->inputApplicationHandle; 3142 } 3143 if (window) { 3144 commandEntry->inputWindowHandle = window->inputWindowHandle; 3145 commandEntry->inputChannel = window->inputChannel; 3146 } 3147} 3148 3149void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3150 CommandEntry* commandEntry) { 3151 mLock.unlock(); 3152 3153 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3154 3155 mLock.lock(); 3156} 3157 3158void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3159 CommandEntry* commandEntry) { 3160 sp<Connection> connection = commandEntry->connection; 3161 3162 if (connection->status != Connection::STATUS_ZOMBIE) { 3163 mLock.unlock(); 3164 3165 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3166 3167 mLock.lock(); 3168 } 3169} 3170 3171void InputDispatcher::doNotifyANRLockedInterruptible( 3172 CommandEntry* commandEntry) { 3173 mLock.unlock(); 3174 3175 nsecs_t newTimeout = mPolicy->notifyANR( 3176 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle); 3177 3178 mLock.lock(); 3179 3180 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel); 3181} 3182 3183void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3184 CommandEntry* commandEntry) { 3185 KeyEntry* entry = commandEntry->keyEntry; 3186 3187 KeyEvent event; 3188 initializeKeyEvent(&event, entry); 3189 3190 mLock.unlock(); 3191 3192 bool consumed = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3193 &event, entry->policyFlags); 3194 3195 mLock.lock(); 3196 3197 entry->interceptKeyResult = consumed 3198 ? KeyEntry::INTERCEPT_KEY_RESULT_SKIP 3199 : KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3200 mAllocator.releaseKeyEntry(entry); 3201} 3202 3203void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3204 CommandEntry* commandEntry) { 3205 sp<Connection> connection = commandEntry->connection; 3206 bool handled = commandEntry->handled; 3207 3208 if (!connection->outboundQueue.isEmpty()) { 3209 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 3210 if (dispatchEntry->inProgress 3211 && dispatchEntry->hasForegroundTarget() 3212 && dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3213 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3214 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3215 if (handled) { 3216 // If the application handled a non-fallback key, then immediately 3217 // cancel all fallback keys previously dispatched to the application. 3218 // This behavior will prevent chording with fallback keys (so they cannot 3219 // be used as modifiers) but it will ensure that fallback keys do not 3220 // get stuck. This takes care of the case where the application does not handle 3221 // the original DOWN so we generate a fallback DOWN but it does handle 3222 // the original UP in which case we want to send a fallback CANCEL. 3223 synthesizeCancelationEventsForConnectionLocked(connection, 3224 InputState::CANCEL_FALLBACK_EVENTS, 3225 "application handled a non-fallback event, " 3226 "canceling all fallback events"); 3227 connection->originalKeyCodeForFallback = -1; 3228 } else { 3229 // If the application did not handle a non-fallback key, first check 3230 // that we are in a good state to handle the fallback key. Then ask 3231 // the policy what to do with it. 3232 if (connection->originalKeyCodeForFallback < 0) { 3233 if (keyEntry->action != AKEY_EVENT_ACTION_DOWN 3234 || keyEntry->repeatCount != 0) { 3235#if DEBUG_OUTBOUND_EVENT_DETAILS 3236 LOGD("Unhandled key event: Skipping fallback since this " 3237 "is not an initial down. " 3238 "keyCode=%d, action=%d, repeatCount=%d", 3239 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3240#endif 3241 goto SkipFallback; 3242 } 3243 3244 // Start handling the fallback key on DOWN. 3245 connection->originalKeyCodeForFallback = keyEntry->keyCode; 3246 } else { 3247 if (keyEntry->keyCode != connection->originalKeyCodeForFallback) { 3248#if DEBUG_OUTBOUND_EVENT_DETAILS 3249 LOGD("Unhandled key event: Skipping fallback since there is " 3250 "already a different fallback in progress. " 3251 "keyCode=%d, originalKeyCodeForFallback=%d", 3252 keyEntry->keyCode, connection->originalKeyCodeForFallback); 3253#endif 3254 goto SkipFallback; 3255 } 3256 3257 // Finish handling the fallback key on UP. 3258 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3259 connection->originalKeyCodeForFallback = -1; 3260 } 3261 } 3262 3263#if DEBUG_OUTBOUND_EVENT_DETAILS 3264 LOGD("Unhandled key event: Asking policy to perform fallback action. " 3265 "keyCode=%d, action=%d, repeatCount=%d", 3266 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3267#endif 3268 KeyEvent event; 3269 initializeKeyEvent(&event, keyEntry); 3270 3271 mLock.unlock(); 3272 3273 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3274 &event, keyEntry->policyFlags, &event); 3275 3276 mLock.lock(); 3277 3278 if (connection->status != Connection::STATUS_NORMAL) { 3279 return; 3280 } 3281 3282 assert(connection->outboundQueue.headSentinel.next == dispatchEntry); 3283 3284 if (fallback) { 3285 // Restart the dispatch cycle using the fallback key. 3286 keyEntry->eventTime = event.getEventTime(); 3287 keyEntry->deviceId = event.getDeviceId(); 3288 keyEntry->source = event.getSource(); 3289 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3290 keyEntry->keyCode = event.getKeyCode(); 3291 keyEntry->scanCode = event.getScanCode(); 3292 keyEntry->metaState = event.getMetaState(); 3293 keyEntry->repeatCount = event.getRepeatCount(); 3294 keyEntry->downTime = event.getDownTime(); 3295 keyEntry->syntheticRepeat = false; 3296 3297#if DEBUG_OUTBOUND_EVENT_DETAILS 3298 LOGD("Unhandled key event: Dispatching fallback key. " 3299 "fallbackKeyCode=%d, fallbackMetaState=%08x", 3300 keyEntry->keyCode, keyEntry->metaState); 3301#endif 3302 3303 dispatchEntry->inProgress = false; 3304 startDispatchCycleLocked(now(), connection); 3305 return; 3306 } 3307 } 3308 } 3309 } 3310 } 3311 3312SkipFallback: 3313 startNextDispatchCycleLocked(now(), connection); 3314} 3315 3316void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3317 mLock.unlock(); 3318 3319 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3320 3321 mLock.lock(); 3322} 3323 3324void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3325 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3326 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3327 entry->downTime, entry->eventTime); 3328} 3329 3330void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3331 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3332 // TODO Write some statistics about how long we spend waiting. 3333} 3334 3335void InputDispatcher::dump(String8& dump) { 3336 dump.append("Input Dispatcher State:\n"); 3337 dumpDispatchStateLocked(dump); 3338} 3339 3340 3341// --- InputDispatcher::Queue --- 3342 3343template <typename T> 3344uint32_t InputDispatcher::Queue<T>::count() const { 3345 uint32_t result = 0; 3346 for (const T* entry = headSentinel.next; entry != & tailSentinel; entry = entry->next) { 3347 result += 1; 3348 } 3349 return result; 3350} 3351 3352 3353// --- InputDispatcher::Allocator --- 3354 3355InputDispatcher::Allocator::Allocator() { 3356} 3357 3358InputDispatcher::InjectionState* 3359InputDispatcher::Allocator::obtainInjectionState(int32_t injectorPid, int32_t injectorUid) { 3360 InjectionState* injectionState = mInjectionStatePool.alloc(); 3361 injectionState->refCount = 1; 3362 injectionState->injectorPid = injectorPid; 3363 injectionState->injectorUid = injectorUid; 3364 injectionState->injectionIsAsync = false; 3365 injectionState->injectionResult = INPUT_EVENT_INJECTION_PENDING; 3366 injectionState->pendingForegroundDispatches = 0; 3367 return injectionState; 3368} 3369 3370void InputDispatcher::Allocator::initializeEventEntry(EventEntry* entry, int32_t type, 3371 nsecs_t eventTime, uint32_t policyFlags) { 3372 entry->type = type; 3373 entry->refCount = 1; 3374 entry->dispatchInProgress = false; 3375 entry->eventTime = eventTime; 3376 entry->policyFlags = policyFlags; 3377 entry->injectionState = NULL; 3378} 3379 3380void InputDispatcher::Allocator::releaseEventEntryInjectionState(EventEntry* entry) { 3381 if (entry->injectionState) { 3382 releaseInjectionState(entry->injectionState); 3383 entry->injectionState = NULL; 3384 } 3385} 3386 3387InputDispatcher::ConfigurationChangedEntry* 3388InputDispatcher::Allocator::obtainConfigurationChangedEntry(nsecs_t eventTime) { 3389 ConfigurationChangedEntry* entry = mConfigurationChangeEntryPool.alloc(); 3390 initializeEventEntry(entry, EventEntry::TYPE_CONFIGURATION_CHANGED, eventTime, 0); 3391 return entry; 3392} 3393 3394InputDispatcher::KeyEntry* InputDispatcher::Allocator::obtainKeyEntry(nsecs_t eventTime, 3395 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3396 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3397 int32_t repeatCount, nsecs_t downTime) { 3398 KeyEntry* entry = mKeyEntryPool.alloc(); 3399 initializeEventEntry(entry, EventEntry::TYPE_KEY, eventTime, policyFlags); 3400 3401 entry->deviceId = deviceId; 3402 entry->source = source; 3403 entry->action = action; 3404 entry->flags = flags; 3405 entry->keyCode = keyCode; 3406 entry->scanCode = scanCode; 3407 entry->metaState = metaState; 3408 entry->repeatCount = repeatCount; 3409 entry->downTime = downTime; 3410 entry->syntheticRepeat = false; 3411 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3412 return entry; 3413} 3414 3415InputDispatcher::MotionEntry* InputDispatcher::Allocator::obtainMotionEntry(nsecs_t eventTime, 3416 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 3417 int32_t metaState, int32_t edgeFlags, float xPrecision, float yPrecision, 3418 nsecs_t downTime, uint32_t pointerCount, 3419 const int32_t* pointerIds, const PointerCoords* pointerCoords) { 3420 MotionEntry* entry = mMotionEntryPool.alloc(); 3421 initializeEventEntry(entry, EventEntry::TYPE_MOTION, eventTime, policyFlags); 3422 3423 entry->eventTime = eventTime; 3424 entry->deviceId = deviceId; 3425 entry->source = source; 3426 entry->action = action; 3427 entry->flags = flags; 3428 entry->metaState = metaState; 3429 entry->edgeFlags = edgeFlags; 3430 entry->xPrecision = xPrecision; 3431 entry->yPrecision = yPrecision; 3432 entry->downTime = downTime; 3433 entry->pointerCount = pointerCount; 3434 entry->firstSample.eventTime = eventTime; 3435 entry->firstSample.next = NULL; 3436 entry->lastSample = & entry->firstSample; 3437 for (uint32_t i = 0; i < pointerCount; i++) { 3438 entry->pointerIds[i] = pointerIds[i]; 3439 entry->firstSample.pointerCoords[i] = pointerCoords[i]; 3440 } 3441 return entry; 3442} 3443 3444InputDispatcher::DispatchEntry* InputDispatcher::Allocator::obtainDispatchEntry( 3445 EventEntry* eventEntry, 3446 int32_t targetFlags, float xOffset, float yOffset) { 3447 DispatchEntry* entry = mDispatchEntryPool.alloc(); 3448 entry->eventEntry = eventEntry; 3449 eventEntry->refCount += 1; 3450 entry->targetFlags = targetFlags; 3451 entry->xOffset = xOffset; 3452 entry->yOffset = yOffset; 3453 entry->inProgress = false; 3454 entry->headMotionSample = NULL; 3455 entry->tailMotionSample = NULL; 3456 return entry; 3457} 3458 3459InputDispatcher::CommandEntry* InputDispatcher::Allocator::obtainCommandEntry(Command command) { 3460 CommandEntry* entry = mCommandEntryPool.alloc(); 3461 entry->command = command; 3462 return entry; 3463} 3464 3465void InputDispatcher::Allocator::releaseInjectionState(InjectionState* injectionState) { 3466 injectionState->refCount -= 1; 3467 if (injectionState->refCount == 0) { 3468 mInjectionStatePool.free(injectionState); 3469 } else { 3470 assert(injectionState->refCount > 0); 3471 } 3472} 3473 3474void InputDispatcher::Allocator::releaseEventEntry(EventEntry* entry) { 3475 switch (entry->type) { 3476 case EventEntry::TYPE_CONFIGURATION_CHANGED: 3477 releaseConfigurationChangedEntry(static_cast<ConfigurationChangedEntry*>(entry)); 3478 break; 3479 case EventEntry::TYPE_KEY: 3480 releaseKeyEntry(static_cast<KeyEntry*>(entry)); 3481 break; 3482 case EventEntry::TYPE_MOTION: 3483 releaseMotionEntry(static_cast<MotionEntry*>(entry)); 3484 break; 3485 default: 3486 assert(false); 3487 break; 3488 } 3489} 3490 3491void InputDispatcher::Allocator::releaseConfigurationChangedEntry( 3492 ConfigurationChangedEntry* entry) { 3493 entry->refCount -= 1; 3494 if (entry->refCount == 0) { 3495 releaseEventEntryInjectionState(entry); 3496 mConfigurationChangeEntryPool.free(entry); 3497 } else { 3498 assert(entry->refCount > 0); 3499 } 3500} 3501 3502void InputDispatcher::Allocator::releaseKeyEntry(KeyEntry* entry) { 3503 entry->refCount -= 1; 3504 if (entry->refCount == 0) { 3505 releaseEventEntryInjectionState(entry); 3506 mKeyEntryPool.free(entry); 3507 } else { 3508 assert(entry->refCount > 0); 3509 } 3510} 3511 3512void InputDispatcher::Allocator::releaseMotionEntry(MotionEntry* entry) { 3513 entry->refCount -= 1; 3514 if (entry->refCount == 0) { 3515 releaseEventEntryInjectionState(entry); 3516 for (MotionSample* sample = entry->firstSample.next; sample != NULL; ) { 3517 MotionSample* next = sample->next; 3518 mMotionSamplePool.free(sample); 3519 sample = next; 3520 } 3521 mMotionEntryPool.free(entry); 3522 } else { 3523 assert(entry->refCount > 0); 3524 } 3525} 3526 3527void InputDispatcher::Allocator::releaseDispatchEntry(DispatchEntry* entry) { 3528 releaseEventEntry(entry->eventEntry); 3529 mDispatchEntryPool.free(entry); 3530} 3531 3532void InputDispatcher::Allocator::releaseCommandEntry(CommandEntry* entry) { 3533 mCommandEntryPool.free(entry); 3534} 3535 3536void InputDispatcher::Allocator::appendMotionSample(MotionEntry* motionEntry, 3537 nsecs_t eventTime, const PointerCoords* pointerCoords) { 3538 MotionSample* sample = mMotionSamplePool.alloc(); 3539 sample->eventTime = eventTime; 3540 uint32_t pointerCount = motionEntry->pointerCount; 3541 for (uint32_t i = 0; i < pointerCount; i++) { 3542 sample->pointerCoords[i] = pointerCoords[i]; 3543 } 3544 3545 sample->next = NULL; 3546 motionEntry->lastSample->next = sample; 3547 motionEntry->lastSample = sample; 3548} 3549 3550void InputDispatcher::Allocator::recycleKeyEntry(KeyEntry* keyEntry) { 3551 releaseEventEntryInjectionState(keyEntry); 3552 3553 keyEntry->dispatchInProgress = false; 3554 keyEntry->syntheticRepeat = false; 3555 keyEntry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3556} 3557 3558 3559// --- InputDispatcher::MotionEntry --- 3560 3561uint32_t InputDispatcher::MotionEntry::countSamples() const { 3562 uint32_t count = 1; 3563 for (MotionSample* sample = firstSample.next; sample != NULL; sample = sample->next) { 3564 count += 1; 3565 } 3566 return count; 3567} 3568 3569 3570// --- InputDispatcher::InputState --- 3571 3572InputDispatcher::InputState::InputState() { 3573} 3574 3575InputDispatcher::InputState::~InputState() { 3576} 3577 3578bool InputDispatcher::InputState::isNeutral() const { 3579 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 3580} 3581 3582void InputDispatcher::InputState::trackEvent( 3583 const EventEntry* entry) { 3584 switch (entry->type) { 3585 case EventEntry::TYPE_KEY: 3586 trackKey(static_cast<const KeyEntry*>(entry)); 3587 break; 3588 3589 case EventEntry::TYPE_MOTION: 3590 trackMotion(static_cast<const MotionEntry*>(entry)); 3591 break; 3592 } 3593} 3594 3595void InputDispatcher::InputState::trackKey( 3596 const KeyEntry* entry) { 3597 int32_t action = entry->action; 3598 for (size_t i = 0; i < mKeyMementos.size(); i++) { 3599 KeyMemento& memento = mKeyMementos.editItemAt(i); 3600 if (memento.deviceId == entry->deviceId 3601 && memento.source == entry->source 3602 && memento.keyCode == entry->keyCode 3603 && memento.scanCode == entry->scanCode) { 3604 switch (action) { 3605 case AKEY_EVENT_ACTION_UP: 3606 mKeyMementos.removeAt(i); 3607 return; 3608 3609 case AKEY_EVENT_ACTION_DOWN: 3610 mKeyMementos.removeAt(i); 3611 goto Found; 3612 3613 default: 3614 return; 3615 } 3616 } 3617 } 3618 3619Found: 3620 if (action == AKEY_EVENT_ACTION_DOWN) { 3621 mKeyMementos.push(); 3622 KeyMemento& memento = mKeyMementos.editTop(); 3623 memento.deviceId = entry->deviceId; 3624 memento.source = entry->source; 3625 memento.keyCode = entry->keyCode; 3626 memento.scanCode = entry->scanCode; 3627 memento.flags = entry->flags; 3628 memento.downTime = entry->downTime; 3629 } 3630} 3631 3632void InputDispatcher::InputState::trackMotion( 3633 const MotionEntry* entry) { 3634 int32_t action = entry->action & AMOTION_EVENT_ACTION_MASK; 3635 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3636 MotionMemento& memento = mMotionMementos.editItemAt(i); 3637 if (memento.deviceId == entry->deviceId 3638 && memento.source == entry->source) { 3639 switch (action) { 3640 case AMOTION_EVENT_ACTION_UP: 3641 case AMOTION_EVENT_ACTION_CANCEL: 3642 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3643 mMotionMementos.removeAt(i); 3644 return; 3645 3646 case AMOTION_EVENT_ACTION_DOWN: 3647 mMotionMementos.removeAt(i); 3648 goto Found; 3649 3650 case AMOTION_EVENT_ACTION_POINTER_UP: 3651 case AMOTION_EVENT_ACTION_POINTER_DOWN: 3652 case AMOTION_EVENT_ACTION_MOVE: 3653 memento.setPointers(entry); 3654 return; 3655 3656 default: 3657 return; 3658 } 3659 } 3660 } 3661 3662Found: 3663 if (action == AMOTION_EVENT_ACTION_DOWN) { 3664 mMotionMementos.push(); 3665 MotionMemento& memento = mMotionMementos.editTop(); 3666 memento.deviceId = entry->deviceId; 3667 memento.source = entry->source; 3668 memento.xPrecision = entry->xPrecision; 3669 memento.yPrecision = entry->yPrecision; 3670 memento.downTime = entry->downTime; 3671 memento.setPointers(entry); 3672 } 3673} 3674 3675void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 3676 pointerCount = entry->pointerCount; 3677 for (uint32_t i = 0; i < entry->pointerCount; i++) { 3678 pointerIds[i] = entry->pointerIds[i]; 3679 pointerCoords[i] = entry->lastSample->pointerCoords[i]; 3680 } 3681} 3682 3683void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 3684 Allocator* allocator, Vector<EventEntry*>& outEvents, 3685 CancelationOptions options) { 3686 for (size_t i = 0; i < mKeyMementos.size(); ) { 3687 const KeyMemento& memento = mKeyMementos.itemAt(i); 3688 if (shouldCancelKey(memento, options)) { 3689 outEvents.push(allocator->obtainKeyEntry(currentTime, 3690 memento.deviceId, memento.source, 0, 3691 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 3692 memento.keyCode, memento.scanCode, 0, 0, memento.downTime)); 3693 mKeyMementos.removeAt(i); 3694 } else { 3695 i += 1; 3696 } 3697 } 3698 3699 for (size_t i = 0; i < mMotionMementos.size(); ) { 3700 const MotionMemento& memento = mMotionMementos.itemAt(i); 3701 if (shouldCancelMotion(memento, options)) { 3702 outEvents.push(allocator->obtainMotionEntry(currentTime, 3703 memento.deviceId, memento.source, 0, 3704 AMOTION_EVENT_ACTION_CANCEL, 0, 0, 0, 3705 memento.xPrecision, memento.yPrecision, memento.downTime, 3706 memento.pointerCount, memento.pointerIds, memento.pointerCoords)); 3707 mMotionMementos.removeAt(i); 3708 } else { 3709 i += 1; 3710 } 3711 } 3712} 3713 3714void InputDispatcher::InputState::clear() { 3715 mKeyMementos.clear(); 3716 mMotionMementos.clear(); 3717} 3718 3719void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 3720 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3721 const MotionMemento& memento = mMotionMementos.itemAt(i); 3722 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 3723 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 3724 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 3725 if (memento.deviceId == otherMemento.deviceId 3726 && memento.source == otherMemento.source) { 3727 other.mMotionMementos.removeAt(j); 3728 } else { 3729 j += 1; 3730 } 3731 } 3732 other.mMotionMementos.push(memento); 3733 } 3734 } 3735} 3736 3737bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 3738 CancelationOptions options) { 3739 switch (options) { 3740 case CANCEL_ALL_EVENTS: 3741 case CANCEL_NON_POINTER_EVENTS: 3742 return true; 3743 case CANCEL_FALLBACK_EVENTS: 3744 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 3745 default: 3746 return false; 3747 } 3748} 3749 3750bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 3751 CancelationOptions options) { 3752 switch (options) { 3753 case CANCEL_ALL_EVENTS: 3754 return true; 3755 case CANCEL_POINTER_EVENTS: 3756 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 3757 case CANCEL_NON_POINTER_EVENTS: 3758 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 3759 default: 3760 return false; 3761 } 3762} 3763 3764 3765// --- InputDispatcher::Connection --- 3766 3767InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 3768 const sp<InputWindowHandle>& inputWindowHandle) : 3769 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 3770 inputPublisher(inputChannel), 3771 lastEventTime(LONG_LONG_MAX), lastDispatchTime(LONG_LONG_MAX), 3772 originalKeyCodeForFallback(-1) { 3773} 3774 3775InputDispatcher::Connection::~Connection() { 3776} 3777 3778status_t InputDispatcher::Connection::initialize() { 3779 return inputPublisher.initialize(); 3780} 3781 3782const char* InputDispatcher::Connection::getStatusLabel() const { 3783 switch (status) { 3784 case STATUS_NORMAL: 3785 return "NORMAL"; 3786 3787 case STATUS_BROKEN: 3788 return "BROKEN"; 3789 3790 case STATUS_ZOMBIE: 3791 return "ZOMBIE"; 3792 3793 default: 3794 return "UNKNOWN"; 3795 } 3796} 3797 3798InputDispatcher::DispatchEntry* InputDispatcher::Connection::findQueuedDispatchEntryForEvent( 3799 const EventEntry* eventEntry) const { 3800 for (DispatchEntry* dispatchEntry = outboundQueue.tailSentinel.prev; 3801 dispatchEntry != & outboundQueue.headSentinel; dispatchEntry = dispatchEntry->prev) { 3802 if (dispatchEntry->eventEntry == eventEntry) { 3803 return dispatchEntry; 3804 } 3805 } 3806 return NULL; 3807} 3808 3809 3810// --- InputDispatcher::CommandEntry --- 3811 3812InputDispatcher::CommandEntry::CommandEntry() : 3813 keyEntry(NULL) { 3814} 3815 3816InputDispatcher::CommandEntry::~CommandEntry() { 3817} 3818 3819 3820// --- InputDispatcher::TouchState --- 3821 3822InputDispatcher::TouchState::TouchState() : 3823 down(false), split(false), deviceId(-1), source(0) { 3824} 3825 3826InputDispatcher::TouchState::~TouchState() { 3827} 3828 3829void InputDispatcher::TouchState::reset() { 3830 down = false; 3831 split = false; 3832 deviceId = -1; 3833 source = 0; 3834 windows.clear(); 3835} 3836 3837void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 3838 down = other.down; 3839 split = other.split; 3840 deviceId = other.deviceId; 3841 source = other.source; 3842 windows.clear(); 3843 windows.appendVector(other.windows); 3844} 3845 3846void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window, 3847 int32_t targetFlags, BitSet32 pointerIds) { 3848 if (targetFlags & InputTarget::FLAG_SPLIT) { 3849 split = true; 3850 } 3851 3852 for (size_t i = 0; i < windows.size(); i++) { 3853 TouchedWindow& touchedWindow = windows.editItemAt(i); 3854 if (touchedWindow.window == window) { 3855 touchedWindow.targetFlags |= targetFlags; 3856 touchedWindow.pointerIds.value |= pointerIds.value; 3857 return; 3858 } 3859 } 3860 3861 windows.push(); 3862 3863 TouchedWindow& touchedWindow = windows.editTop(); 3864 touchedWindow.window = window; 3865 touchedWindow.targetFlags = targetFlags; 3866 touchedWindow.pointerIds = pointerIds; 3867 touchedWindow.channel = window->inputChannel; 3868} 3869 3870void InputDispatcher::TouchState::removeOutsideTouchWindows() { 3871 for (size_t i = 0 ; i < windows.size(); ) { 3872 if (windows[i].targetFlags & InputTarget::FLAG_OUTSIDE) { 3873 windows.removeAt(i); 3874 } else { 3875 i += 1; 3876 } 3877 } 3878} 3879 3880const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() { 3881 for (size_t i = 0; i < windows.size(); i++) { 3882 if (windows[i].targetFlags & InputTarget::FLAG_FOREGROUND) { 3883 return windows[i].window; 3884 } 3885 } 3886 return NULL; 3887} 3888 3889 3890// --- InputDispatcherThread --- 3891 3892InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 3893 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 3894} 3895 3896InputDispatcherThread::~InputDispatcherThread() { 3897} 3898 3899bool InputDispatcherThread::threadLoop() { 3900 mDispatcher->dispatchOnce(); 3901 return true; 3902} 3903 3904} // namespace android 3905