InputDispatcher.cpp revision b6110c2de0cd7950360aeb2c248a44e4ea5f33f5
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// Log debug messages about hover events. 52#define DEBUG_HOVER 0 53 54#include "InputDispatcher.h" 55 56#include <cutils/log.h> 57#include <ui/PowerManager.h> 58 59#include <stddef.h> 60#include <unistd.h> 61#include <errno.h> 62#include <limits.h> 63 64#define INDENT " " 65#define INDENT2 " " 66 67namespace android { 68 69// Default input dispatching timeout if there is no focused application or paused window 70// from which to determine an appropriate dispatching timeout. 71const nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec 72 73// Amount of time to allow for all pending events to be processed when an app switch 74// key is on the way. This is used to preempt input dispatch and drop input events 75// when an application takes too long to respond and the user has pressed an app switch key. 76const nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec 77 78// Amount of time to allow for an event to be dispatched (measured since its eventTime) 79// before considering it stale and dropping it. 80const nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec 81 82 83static inline nsecs_t now() { 84 return systemTime(SYSTEM_TIME_MONOTONIC); 85} 86 87static inline const char* toString(bool value) { 88 return value ? "true" : "false"; 89} 90 91static inline int32_t getMotionEventActionPointerIndex(int32_t action) { 92 return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) 93 >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 94} 95 96static bool isValidKeyAction(int32_t action) { 97 switch (action) { 98 case AKEY_EVENT_ACTION_DOWN: 99 case AKEY_EVENT_ACTION_UP: 100 return true; 101 default: 102 return false; 103 } 104} 105 106static bool validateKeyEvent(int32_t action) { 107 if (! isValidKeyAction(action)) { 108 LOGE("Key event has invalid action code 0x%x", action); 109 return false; 110 } 111 return true; 112} 113 114static bool isValidMotionAction(int32_t action, size_t pointerCount) { 115 switch (action & AMOTION_EVENT_ACTION_MASK) { 116 case AMOTION_EVENT_ACTION_DOWN: 117 case AMOTION_EVENT_ACTION_UP: 118 case AMOTION_EVENT_ACTION_CANCEL: 119 case AMOTION_EVENT_ACTION_MOVE: 120 case AMOTION_EVENT_ACTION_OUTSIDE: 121 case AMOTION_EVENT_ACTION_HOVER_ENTER: 122 case AMOTION_EVENT_ACTION_HOVER_MOVE: 123 case AMOTION_EVENT_ACTION_HOVER_EXIT: 124 case AMOTION_EVENT_ACTION_SCROLL: 125 return true; 126 case AMOTION_EVENT_ACTION_POINTER_DOWN: 127 case AMOTION_EVENT_ACTION_POINTER_UP: { 128 int32_t index = getMotionEventActionPointerIndex(action); 129 return index >= 0 && size_t(index) < pointerCount; 130 } 131 default: 132 return false; 133 } 134} 135 136static bool validateMotionEvent(int32_t action, size_t pointerCount, 137 const int32_t* pointerIds) { 138 if (! isValidMotionAction(action, pointerCount)) { 139 LOGE("Motion event has invalid action code 0x%x", action); 140 return false; 141 } 142 if (pointerCount < 1 || pointerCount > MAX_POINTERS) { 143 LOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.", 144 pointerCount, MAX_POINTERS); 145 return false; 146 } 147 BitSet32 pointerIdBits; 148 for (size_t i = 0; i < pointerCount; i++) { 149 int32_t id = pointerIds[i]; 150 if (id < 0 || id > MAX_POINTER_ID) { 151 LOGE("Motion event has invalid pointer id %d; value must be between 0 and %d", 152 id, MAX_POINTER_ID); 153 return false; 154 } 155 if (pointerIdBits.hasBit(id)) { 156 LOGE("Motion event has duplicate pointer id %d", id); 157 return false; 158 } 159 pointerIdBits.markBit(id); 160 } 161 return true; 162} 163 164static void dumpRegion(String8& dump, const SkRegion& region) { 165 if (region.isEmpty()) { 166 dump.append("<empty>"); 167 return; 168 } 169 170 bool first = true; 171 for (SkRegion::Iterator it(region); !it.done(); it.next()) { 172 if (first) { 173 first = false; 174 } else { 175 dump.append("|"); 176 } 177 const SkIRect& rect = it.rect(); 178 dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); 179 } 180} 181 182 183// --- InputDispatcher --- 184 185InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) : 186 mPolicy(policy), 187 mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX), 188 mNextUnblockedEvent(NULL), 189 mDispatchEnabled(true), mDispatchFrozen(false), mInputFilterEnabled(false), 190 mFocusedWindow(NULL), 191 mFocusedApplication(NULL), 192 mCurrentInputTargetsValid(false), 193 mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE), 194 mLastHoverWindow(NULL) { 195 mLooper = new Looper(false); 196 197 mInboundQueue.headSentinel.refCount = -1; 198 mInboundQueue.headSentinel.type = EventEntry::TYPE_SENTINEL; 199 mInboundQueue.headSentinel.eventTime = LONG_LONG_MIN; 200 201 mInboundQueue.tailSentinel.refCount = -1; 202 mInboundQueue.tailSentinel.type = EventEntry::TYPE_SENTINEL; 203 mInboundQueue.tailSentinel.eventTime = LONG_LONG_MAX; 204 205 mKeyRepeatState.lastKeyEntry = NULL; 206 207 int32_t maxEventsPerSecond = policy->getMaxEventsPerSecond(); 208 mThrottleState.minTimeBetweenEvents = 1000000000LL / maxEventsPerSecond; 209 mThrottleState.lastDeviceId = -1; 210 211#if DEBUG_THROTTLING 212 mThrottleState.originalSampleCount = 0; 213 LOGD("Throttling - Max events per second = %d", maxEventsPerSecond); 214#endif 215} 216 217InputDispatcher::~InputDispatcher() { 218 { // acquire lock 219 AutoMutex _l(mLock); 220 221 resetKeyRepeatLocked(); 222 releasePendingEventLocked(); 223 drainInboundQueueLocked(); 224 } 225 226 while (mConnectionsByReceiveFd.size() != 0) { 227 unregisterInputChannel(mConnectionsByReceiveFd.valueAt(0)->inputChannel); 228 } 229} 230 231void InputDispatcher::dispatchOnce() { 232 nsecs_t keyRepeatTimeout = mPolicy->getKeyRepeatTimeout(); 233 nsecs_t keyRepeatDelay = mPolicy->getKeyRepeatDelay(); 234 235 nsecs_t nextWakeupTime = LONG_LONG_MAX; 236 { // acquire lock 237 AutoMutex _l(mLock); 238 dispatchOnceInnerLocked(keyRepeatTimeout, keyRepeatDelay, & nextWakeupTime); 239 240 if (runCommandsLockedInterruptible()) { 241 nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 242 } 243 } // release lock 244 245 // Wait for callback or timeout or wake. (make sure we round up, not down) 246 nsecs_t currentTime = now(); 247 int timeoutMillis = toMillisecondTimeoutDelay(currentTime, nextWakeupTime); 248 mLooper->pollOnce(timeoutMillis); 249} 250 251void InputDispatcher::dispatchOnceInnerLocked(nsecs_t keyRepeatTimeout, 252 nsecs_t keyRepeatDelay, nsecs_t* nextWakeupTime) { 253 nsecs_t currentTime = now(); 254 255 // Reset the key repeat timer whenever we disallow key events, even if the next event 256 // is not a key. This is to ensure that we abort a key repeat if the device is just coming 257 // out of sleep. 258 if (keyRepeatTimeout < 0) { 259 resetKeyRepeatLocked(); 260 } 261 262 // If dispatching is frozen, do not process timeouts or try to deliver any new events. 263 if (mDispatchFrozen) { 264#if DEBUG_FOCUS 265 LOGD("Dispatch frozen. Waiting some more."); 266#endif 267 return; 268 } 269 270 // Optimize latency of app switches. 271 // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has 272 // been pressed. When it expires, we preempt dispatch and drop all other pending events. 273 bool isAppSwitchDue = mAppSwitchDueTime <= currentTime; 274 if (mAppSwitchDueTime < *nextWakeupTime) { 275 *nextWakeupTime = mAppSwitchDueTime; 276 } 277 278 // Ready to start a new event. 279 // If we don't already have a pending event, go grab one. 280 if (! mPendingEvent) { 281 if (mInboundQueue.isEmpty()) { 282 if (isAppSwitchDue) { 283 // The inbound queue is empty so the app switch key we were waiting 284 // for will never arrive. Stop waiting for it. 285 resetPendingAppSwitchLocked(false); 286 isAppSwitchDue = false; 287 } 288 289 // Synthesize a key repeat if appropriate. 290 if (mKeyRepeatState.lastKeyEntry) { 291 if (currentTime >= mKeyRepeatState.nextRepeatTime) { 292 mPendingEvent = synthesizeKeyRepeatLocked(currentTime, keyRepeatDelay); 293 } else { 294 if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) { 295 *nextWakeupTime = mKeyRepeatState.nextRepeatTime; 296 } 297 } 298 } 299 if (! mPendingEvent) { 300 return; 301 } 302 } else { 303 // Inbound queue has at least one entry. 304 EventEntry* entry = mInboundQueue.headSentinel.next; 305 306 // Throttle the entry if it is a move event and there are no 307 // other events behind it in the queue. Due to movement batching, additional 308 // samples may be appended to this event by the time the throttling timeout 309 // expires. 310 // TODO Make this smarter and consider throttling per device independently. 311 if (entry->type == EventEntry::TYPE_MOTION 312 && !isAppSwitchDue 313 && mDispatchEnabled 314 && (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) 315 && !entry->isInjected()) { 316 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 317 int32_t deviceId = motionEntry->deviceId; 318 uint32_t source = motionEntry->source; 319 if (! isAppSwitchDue 320 && motionEntry->next == & mInboundQueue.tailSentinel // exactly one event 321 && (motionEntry->action == AMOTION_EVENT_ACTION_MOVE 322 || motionEntry->action == AMOTION_EVENT_ACTION_HOVER_MOVE) 323 && deviceId == mThrottleState.lastDeviceId 324 && source == mThrottleState.lastSource) { 325 nsecs_t nextTime = mThrottleState.lastEventTime 326 + mThrottleState.minTimeBetweenEvents; 327 if (currentTime < nextTime) { 328 // Throttle it! 329#if DEBUG_THROTTLING 330 LOGD("Throttling - Delaying motion event for " 331 "device %d, source 0x%08x by up to %0.3fms.", 332 deviceId, source, (nextTime - currentTime) * 0.000001); 333#endif 334 if (nextTime < *nextWakeupTime) { 335 *nextWakeupTime = nextTime; 336 } 337 if (mThrottleState.originalSampleCount == 0) { 338 mThrottleState.originalSampleCount = 339 motionEntry->countSamples(); 340 } 341 return; 342 } 343 } 344 345#if DEBUG_THROTTLING 346 if (mThrottleState.originalSampleCount != 0) { 347 uint32_t count = motionEntry->countSamples(); 348 LOGD("Throttling - Motion event sample count grew by %d from %d to %d.", 349 count - mThrottleState.originalSampleCount, 350 mThrottleState.originalSampleCount, count); 351 mThrottleState.originalSampleCount = 0; 352 } 353#endif 354 355 mThrottleState.lastEventTime = currentTime; 356 mThrottleState.lastDeviceId = deviceId; 357 mThrottleState.lastSource = source; 358 } 359 360 mInboundQueue.dequeue(entry); 361 mPendingEvent = entry; 362 } 363 364 // Poke user activity for this event. 365 if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) { 366 pokeUserActivityLocked(mPendingEvent); 367 } 368 } 369 370 // Now we have an event to dispatch. 371 // All events are eventually dequeued and processed this way, even if we intend to drop them. 372 LOG_ASSERT(mPendingEvent != NULL); 373 bool done = false; 374 DropReason dropReason = DROP_REASON_NOT_DROPPED; 375 if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) { 376 dropReason = DROP_REASON_POLICY; 377 } else if (!mDispatchEnabled) { 378 dropReason = DROP_REASON_DISABLED; 379 } 380 381 if (mNextUnblockedEvent == mPendingEvent) { 382 mNextUnblockedEvent = NULL; 383 } 384 385 switch (mPendingEvent->type) { 386 case EventEntry::TYPE_CONFIGURATION_CHANGED: { 387 ConfigurationChangedEntry* typedEntry = 388 static_cast<ConfigurationChangedEntry*>(mPendingEvent); 389 done = dispatchConfigurationChangedLocked(currentTime, typedEntry); 390 dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped 391 break; 392 } 393 394 case EventEntry::TYPE_KEY: { 395 KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent); 396 if (isAppSwitchDue) { 397 if (isAppSwitchKeyEventLocked(typedEntry)) { 398 resetPendingAppSwitchLocked(true); 399 isAppSwitchDue = false; 400 } else if (dropReason == DROP_REASON_NOT_DROPPED) { 401 dropReason = DROP_REASON_APP_SWITCH; 402 } 403 } 404 if (dropReason == DROP_REASON_NOT_DROPPED 405 && isStaleEventLocked(currentTime, typedEntry)) { 406 dropReason = DROP_REASON_STALE; 407 } 408 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 409 dropReason = DROP_REASON_BLOCKED; 410 } 411 done = dispatchKeyLocked(currentTime, typedEntry, keyRepeatTimeout, 412 &dropReason, nextWakeupTime); 413 break; 414 } 415 416 case EventEntry::TYPE_MOTION: { 417 MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent); 418 if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) { 419 dropReason = DROP_REASON_APP_SWITCH; 420 } 421 if (dropReason == DROP_REASON_NOT_DROPPED 422 && isStaleEventLocked(currentTime, typedEntry)) { 423 dropReason = DROP_REASON_STALE; 424 } 425 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 426 dropReason = DROP_REASON_BLOCKED; 427 } 428 done = dispatchMotionLocked(currentTime, typedEntry, 429 &dropReason, nextWakeupTime); 430 break; 431 } 432 433 default: 434 LOG_ASSERT(false); 435 break; 436 } 437 438 if (done) { 439 if (dropReason != DROP_REASON_NOT_DROPPED) { 440 dropInboundEventLocked(mPendingEvent, dropReason); 441 } 442 443 releasePendingEventLocked(); 444 *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 445 } 446} 447 448bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) { 449 bool needWake = mInboundQueue.isEmpty(); 450 mInboundQueue.enqueueAtTail(entry); 451 452 switch (entry->type) { 453 case EventEntry::TYPE_KEY: { 454 // Optimize app switch latency. 455 // If the application takes too long to catch up then we drop all events preceding 456 // the app switch key. 457 KeyEntry* keyEntry = static_cast<KeyEntry*>(entry); 458 if (isAppSwitchKeyEventLocked(keyEntry)) { 459 if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) { 460 mAppSwitchSawKeyDown = true; 461 } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 462 if (mAppSwitchSawKeyDown) { 463#if DEBUG_APP_SWITCH 464 LOGD("App switch is pending!"); 465#endif 466 mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT; 467 mAppSwitchSawKeyDown = false; 468 needWake = true; 469 } 470 } 471 } 472 break; 473 } 474 475 case EventEntry::TYPE_MOTION: { 476 // Optimize case where the current application is unresponsive and the user 477 // decides to touch a window in a different application. 478 // If the application takes too long to catch up then we drop all events preceding 479 // the touch into the other window. 480 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 481 if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN 482 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 483 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY 484 && mInputTargetWaitApplication != NULL) { 485 int32_t x = int32_t(motionEntry->firstSample.pointerCoords[0]. 486 getAxisValue(AMOTION_EVENT_AXIS_X)); 487 int32_t y = int32_t(motionEntry->firstSample.pointerCoords[0]. 488 getAxisValue(AMOTION_EVENT_AXIS_Y)); 489 const InputWindow* touchedWindow = findTouchedWindowAtLocked(x, y); 490 if (touchedWindow 491 && touchedWindow->inputWindowHandle != NULL 492 && touchedWindow->inputWindowHandle->getInputApplicationHandle() 493 != mInputTargetWaitApplication) { 494 // User touched a different application than the one we are waiting on. 495 // Flag the event, and start pruning the input queue. 496 mNextUnblockedEvent = motionEntry; 497 needWake = true; 498 } 499 } 500 break; 501 } 502 } 503 504 return needWake; 505} 506 507const InputWindow* InputDispatcher::findTouchedWindowAtLocked(int32_t x, int32_t y) { 508 // Traverse windows from front to back to find touched window. 509 size_t numWindows = mWindows.size(); 510 for (size_t i = 0; i < numWindows; i++) { 511 const InputWindow* window = & mWindows.editItemAt(i); 512 int32_t flags = window->layoutParamsFlags; 513 514 if (window->visible) { 515 if (!(flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 516 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 517 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 518 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 519 // Found window. 520 return window; 521 } 522 } 523 } 524 525 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 526 // Error window is on top but not visible, so touch is dropped. 527 return NULL; 528 } 529 } 530 return NULL; 531} 532 533void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) { 534 const char* reason; 535 switch (dropReason) { 536 case DROP_REASON_POLICY: 537#if DEBUG_INBOUND_EVENT_DETAILS 538 LOGD("Dropped event because policy consumed it."); 539#endif 540 reason = "inbound event was dropped because the policy consumed it"; 541 break; 542 case DROP_REASON_DISABLED: 543 LOGI("Dropped event because input dispatch is disabled."); 544 reason = "inbound event was dropped because input dispatch is disabled"; 545 break; 546 case DROP_REASON_APP_SWITCH: 547 LOGI("Dropped event because of pending overdue app switch."); 548 reason = "inbound event was dropped because of pending overdue app switch"; 549 break; 550 case DROP_REASON_BLOCKED: 551 LOGI("Dropped event because the current application is not responding and the user " 552 "has started interating with a different application."); 553 reason = "inbound event was dropped because the current application is not responding " 554 "and the user has started interating with a different application"; 555 break; 556 case DROP_REASON_STALE: 557 LOGI("Dropped event because it is stale."); 558 reason = "inbound event was dropped because it is stale"; 559 break; 560 default: 561 LOG_ASSERT(false); 562 return; 563 } 564 565 switch (entry->type) { 566 case EventEntry::TYPE_KEY: { 567 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 568 synthesizeCancelationEventsForAllConnectionsLocked(options); 569 break; 570 } 571 case EventEntry::TYPE_MOTION: { 572 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 573 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 574 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason); 575 synthesizeCancelationEventsForAllConnectionsLocked(options); 576 } else { 577 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 578 synthesizeCancelationEventsForAllConnectionsLocked(options); 579 } 580 break; 581 } 582 } 583} 584 585bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) { 586 return keyCode == AKEYCODE_HOME || keyCode == AKEYCODE_ENDCALL; 587} 588 589bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) { 590 return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) 591 && isAppSwitchKeyCode(keyEntry->keyCode) 592 && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED) 593 && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER); 594} 595 596bool InputDispatcher::isAppSwitchPendingLocked() { 597 return mAppSwitchDueTime != LONG_LONG_MAX; 598} 599 600void InputDispatcher::resetPendingAppSwitchLocked(bool handled) { 601 mAppSwitchDueTime = LONG_LONG_MAX; 602 603#if DEBUG_APP_SWITCH 604 if (handled) { 605 LOGD("App switch has arrived."); 606 } else { 607 LOGD("App switch was abandoned."); 608 } 609#endif 610} 611 612bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) { 613 return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT; 614} 615 616bool InputDispatcher::runCommandsLockedInterruptible() { 617 if (mCommandQueue.isEmpty()) { 618 return false; 619 } 620 621 do { 622 CommandEntry* commandEntry = mCommandQueue.dequeueAtHead(); 623 624 Command command = commandEntry->command; 625 (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible' 626 627 commandEntry->connection.clear(); 628 mAllocator.releaseCommandEntry(commandEntry); 629 } while (! mCommandQueue.isEmpty()); 630 return true; 631} 632 633InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) { 634 CommandEntry* commandEntry = mAllocator.obtainCommandEntry(command); 635 mCommandQueue.enqueueAtTail(commandEntry); 636 return commandEntry; 637} 638 639void InputDispatcher::drainInboundQueueLocked() { 640 while (! mInboundQueue.isEmpty()) { 641 EventEntry* entry = mInboundQueue.dequeueAtHead(); 642 releaseInboundEventLocked(entry); 643 } 644} 645 646void InputDispatcher::releasePendingEventLocked() { 647 if (mPendingEvent) { 648 releaseInboundEventLocked(mPendingEvent); 649 mPendingEvent = NULL; 650 } 651} 652 653void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) { 654 InjectionState* injectionState = entry->injectionState; 655 if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) { 656#if DEBUG_DISPATCH_CYCLE 657 LOGD("Injected inbound event was dropped."); 658#endif 659 setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED); 660 } 661 mAllocator.releaseEventEntry(entry); 662} 663 664void InputDispatcher::resetKeyRepeatLocked() { 665 if (mKeyRepeatState.lastKeyEntry) { 666 mAllocator.releaseKeyEntry(mKeyRepeatState.lastKeyEntry); 667 mKeyRepeatState.lastKeyEntry = NULL; 668 } 669} 670 671InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked( 672 nsecs_t currentTime, nsecs_t keyRepeatDelay) { 673 KeyEntry* entry = mKeyRepeatState.lastKeyEntry; 674 675 // Reuse the repeated key entry if it is otherwise unreferenced. 676 uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK) 677 | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED; 678 if (entry->refCount == 1) { 679 mAllocator.recycleKeyEntry(entry); 680 entry->eventTime = currentTime; 681 entry->policyFlags = policyFlags; 682 entry->repeatCount += 1; 683 } else { 684 KeyEntry* newEntry = mAllocator.obtainKeyEntry(currentTime, 685 entry->deviceId, entry->source, policyFlags, 686 entry->action, entry->flags, entry->keyCode, entry->scanCode, 687 entry->metaState, entry->repeatCount + 1, entry->downTime); 688 689 mKeyRepeatState.lastKeyEntry = newEntry; 690 mAllocator.releaseKeyEntry(entry); 691 692 entry = newEntry; 693 } 694 entry->syntheticRepeat = true; 695 696 // Increment reference count since we keep a reference to the event in 697 // mKeyRepeatState.lastKeyEntry in addition to the one we return. 698 entry->refCount += 1; 699 700 mKeyRepeatState.nextRepeatTime = currentTime + keyRepeatDelay; 701 return entry; 702} 703 704bool InputDispatcher::dispatchConfigurationChangedLocked( 705 nsecs_t currentTime, ConfigurationChangedEntry* entry) { 706#if DEBUG_OUTBOUND_EVENT_DETAILS 707 LOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime); 708#endif 709 710 // Reset key repeating in case a keyboard device was added or removed or something. 711 resetKeyRepeatLocked(); 712 713 // Enqueue a command to run outside the lock to tell the policy that the configuration changed. 714 CommandEntry* commandEntry = postCommandLocked( 715 & InputDispatcher::doNotifyConfigurationChangedInterruptible); 716 commandEntry->eventTime = entry->eventTime; 717 return true; 718} 719 720bool InputDispatcher::dispatchKeyLocked( 721 nsecs_t currentTime, KeyEntry* entry, nsecs_t keyRepeatTimeout, 722 DropReason* dropReason, nsecs_t* nextWakeupTime) { 723 // Preprocessing. 724 if (! entry->dispatchInProgress) { 725 if (entry->repeatCount == 0 726 && entry->action == AKEY_EVENT_ACTION_DOWN 727 && (entry->policyFlags & POLICY_FLAG_TRUSTED) 728 && (!(entry->policyFlags & POLICY_FLAG_DISABLE_KEY_REPEAT))) { 729 if (mKeyRepeatState.lastKeyEntry 730 && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) { 731 // We have seen two identical key downs in a row which indicates that the device 732 // driver is automatically generating key repeats itself. We take note of the 733 // repeat here, but we disable our own next key repeat timer since it is clear that 734 // we will not need to synthesize key repeats ourselves. 735 entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1; 736 resetKeyRepeatLocked(); 737 mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves 738 } else { 739 // Not a repeat. Save key down state in case we do see a repeat later. 740 resetKeyRepeatLocked(); 741 mKeyRepeatState.nextRepeatTime = entry->eventTime + keyRepeatTimeout; 742 } 743 mKeyRepeatState.lastKeyEntry = entry; 744 entry->refCount += 1; 745 } else if (! entry->syntheticRepeat) { 746 resetKeyRepeatLocked(); 747 } 748 749 if (entry->repeatCount == 1) { 750 entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS; 751 } else { 752 entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS; 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 const MotionSample* splitBatchAfterSample = NULL; 848 if (isPointerEvent) { 849 // Pointer event. (eg. touchscreen) 850 injectionResult = findTouchedWindowTargetsLocked(currentTime, 851 entry, nextWakeupTime, &conflictingPointerActions, &splitBatchAfterSample); 852 } else { 853 // Non touch event. (eg. trackball) 854 injectionResult = findFocusedWindowTargetsLocked(currentTime, 855 entry, nextWakeupTime); 856 } 857 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 858 return false; 859 } 860 861 setInjectionResultLocked(entry, injectionResult); 862 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 863 return true; 864 } 865 866 addMonitoringTargetsLocked(); 867 commitTargetsLocked(); 868 869 // Unbatch the event if necessary by splitting it into two parts after the 870 // motion sample indicated by splitBatchAfterSample. 871 if (splitBatchAfterSample && splitBatchAfterSample->next) { 872#if DEBUG_BATCHING 873 uint32_t originalSampleCount = entry->countSamples(); 874#endif 875 MotionSample* nextSample = splitBatchAfterSample->next; 876 MotionEntry* nextEntry = mAllocator.obtainMotionEntry(nextSample->eventTime, 877 entry->deviceId, entry->source, entry->policyFlags, 878 entry->action, entry->flags, entry->metaState, entry->edgeFlags, 879 entry->xPrecision, entry->yPrecision, entry->downTime, 880 entry->pointerCount, entry->pointerIds, nextSample->pointerCoords); 881 if (nextSample != entry->lastSample) { 882 nextEntry->firstSample.next = nextSample->next; 883 nextEntry->lastSample = entry->lastSample; 884 } 885 mAllocator.freeMotionSample(nextSample); 886 887 entry->lastSample = const_cast<MotionSample*>(splitBatchAfterSample); 888 entry->lastSample->next = NULL; 889 890 if (entry->injectionState) { 891 nextEntry->injectionState = entry->injectionState; 892 entry->injectionState->refCount += 1; 893 } 894 895#if DEBUG_BATCHING 896 LOGD("Split batch of %d samples into two parts, first part has %d samples, " 897 "second part has %d samples.", originalSampleCount, 898 entry->countSamples(), nextEntry->countSamples()); 899#endif 900 901 mInboundQueue.enqueueAtHead(nextEntry); 902 } 903 } 904 905 // Dispatch the motion. 906 if (conflictingPointerActions) { 907 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 908 "conflicting pointer actions"); 909 synthesizeCancelationEventsForAllConnectionsLocked(options); 910 } 911 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 912 return true; 913} 914 915 916void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) { 917#if DEBUG_OUTBOUND_EVENT_DETAILS 918 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 919 "action=0x%x, flags=0x%x, " 920 "metaState=0x%x, edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld", 921 prefix, 922 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 923 entry->action, entry->flags, 924 entry->metaState, entry->edgeFlags, entry->xPrecision, entry->yPrecision, 925 entry->downTime); 926 927 // Print the most recent sample that we have available, this may change due to batching. 928 size_t sampleCount = 1; 929 const MotionSample* sample = & entry->firstSample; 930 for (; sample->next != NULL; sample = sample->next) { 931 sampleCount += 1; 932 } 933 for (uint32_t i = 0; i < entry->pointerCount; i++) { 934 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 935 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 936 "orientation=%f", 937 i, entry->pointerIds[i], 938 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 939 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 940 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 941 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 942 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 943 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 944 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 945 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 946 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 947 } 948 949 // Keep in mind that due to batching, it is possible for the number of samples actually 950 // dispatched to change before the application finally consumed them. 951 if (entry->action == AMOTION_EVENT_ACTION_MOVE) { 952 LOGD(" ... Total movement samples currently batched %d ...", sampleCount); 953 } 954#endif 955} 956 957void InputDispatcher::dispatchEventToCurrentInputTargetsLocked(nsecs_t currentTime, 958 EventEntry* eventEntry, bool resumeWithAppendedMotionSample) { 959#if DEBUG_DISPATCH_CYCLE 960 LOGD("dispatchEventToCurrentInputTargets - " 961 "resumeWithAppendedMotionSample=%s", 962 toString(resumeWithAppendedMotionSample)); 963#endif 964 965 LOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true 966 967 pokeUserActivityLocked(eventEntry); 968 969 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 970 const InputTarget& inputTarget = mCurrentInputTargets.itemAt(i); 971 972 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 973 if (connectionIndex >= 0) { 974 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 975 prepareDispatchCycleLocked(currentTime, connection, eventEntry, & inputTarget, 976 resumeWithAppendedMotionSample); 977 } else { 978#if DEBUG_FOCUS 979 LOGD("Dropping event delivery to target with channel '%s' because it " 980 "is no longer registered with the input dispatcher.", 981 inputTarget.inputChannel->getName().string()); 982#endif 983 } 984 } 985} 986 987void InputDispatcher::resetTargetsLocked() { 988 mCurrentInputTargetsValid = false; 989 mCurrentInputTargets.clear(); 990 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 991 mInputTargetWaitApplication.clear(); 992} 993 994void InputDispatcher::commitTargetsLocked() { 995 mCurrentInputTargetsValid = true; 996} 997 998int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime, 999 const EventEntry* entry, const InputApplication* application, const InputWindow* window, 1000 nsecs_t* nextWakeupTime) { 1001 if (application == NULL && window == NULL) { 1002 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) { 1003#if DEBUG_FOCUS 1004 LOGD("Waiting for system to become ready for input."); 1005#endif 1006 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY; 1007 mInputTargetWaitStartTime = currentTime; 1008 mInputTargetWaitTimeoutTime = LONG_LONG_MAX; 1009 mInputTargetWaitTimeoutExpired = false; 1010 mInputTargetWaitApplication.clear(); 1011 } 1012 } else { 1013 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1014#if DEBUG_FOCUS 1015 LOGD("Waiting for application to become ready for input: %s", 1016 getApplicationWindowLabelLocked(application, window).string()); 1017#endif 1018 nsecs_t timeout = window ? window->dispatchingTimeout : 1019 application ? application->dispatchingTimeout : DEFAULT_INPUT_DISPATCHING_TIMEOUT; 1020 1021 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY; 1022 mInputTargetWaitStartTime = currentTime; 1023 mInputTargetWaitTimeoutTime = currentTime + timeout; 1024 mInputTargetWaitTimeoutExpired = false; 1025 mInputTargetWaitApplication.clear(); 1026 1027 if (window && window->inputWindowHandle != NULL) { 1028 mInputTargetWaitApplication = 1029 window->inputWindowHandle->getInputApplicationHandle(); 1030 } 1031 if (mInputTargetWaitApplication == NULL && application) { 1032 mInputTargetWaitApplication = application->inputApplicationHandle; 1033 } 1034 } 1035 } 1036 1037 if (mInputTargetWaitTimeoutExpired) { 1038 return INPUT_EVENT_INJECTION_TIMED_OUT; 1039 } 1040 1041 if (currentTime >= mInputTargetWaitTimeoutTime) { 1042 onANRLocked(currentTime, application, window, entry->eventTime, mInputTargetWaitStartTime); 1043 1044 // Force poll loop to wake up immediately on next iteration once we get the 1045 // ANR response back from the policy. 1046 *nextWakeupTime = LONG_LONG_MIN; 1047 return INPUT_EVENT_INJECTION_PENDING; 1048 } else { 1049 // Force poll loop to wake up when timeout is due. 1050 if (mInputTargetWaitTimeoutTime < *nextWakeupTime) { 1051 *nextWakeupTime = mInputTargetWaitTimeoutTime; 1052 } 1053 return INPUT_EVENT_INJECTION_PENDING; 1054 } 1055} 1056 1057void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout, 1058 const sp<InputChannel>& inputChannel) { 1059 if (newTimeout > 0) { 1060 // Extend the timeout. 1061 mInputTargetWaitTimeoutTime = now() + newTimeout; 1062 } else { 1063 // Give up. 1064 mInputTargetWaitTimeoutExpired = true; 1065 1066 // Release the touch targets. 1067 mTouchState.reset(); 1068 1069 // Input state will not be realistic. Mark it out of sync. 1070 if (inputChannel.get()) { 1071 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 1072 if (connectionIndex >= 0) { 1073 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1074 if (connection->status == Connection::STATUS_NORMAL) { 1075 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, 1076 "application not responding"); 1077 synthesizeCancelationEventsForConnectionLocked(connection, options); 1078 } 1079 } 1080 } 1081 } 1082} 1083 1084nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked( 1085 nsecs_t currentTime) { 1086 if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1087 return currentTime - mInputTargetWaitStartTime; 1088 } 1089 return 0; 1090} 1091 1092void InputDispatcher::resetANRTimeoutsLocked() { 1093#if DEBUG_FOCUS 1094 LOGD("Resetting ANR timeouts."); 1095#endif 1096 1097 // Reset input target wait timeout. 1098 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1099} 1100 1101int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime, 1102 const EventEntry* entry, nsecs_t* nextWakeupTime) { 1103 mCurrentInputTargets.clear(); 1104 1105 int32_t injectionResult; 1106 1107 // If there is no currently focused window and no focused application 1108 // then drop the event. 1109 if (! mFocusedWindow) { 1110 if (mFocusedApplication) { 1111#if DEBUG_FOCUS 1112 LOGD("Waiting because there is no focused window but there is a " 1113 "focused application that may eventually add a window: %s.", 1114 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1115#endif 1116 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1117 mFocusedApplication, NULL, nextWakeupTime); 1118 goto Unresponsive; 1119 } 1120 1121 LOGI("Dropping event because there is no focused window or focused application."); 1122 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1123 goto Failed; 1124 } 1125 1126 // Check permissions. 1127 if (! checkInjectionPermission(mFocusedWindow, entry->injectionState)) { 1128 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1129 goto Failed; 1130 } 1131 1132 // If the currently focused window is paused then keep waiting. 1133 if (mFocusedWindow->paused) { 1134#if DEBUG_FOCUS 1135 LOGD("Waiting because focused window is paused."); 1136#endif 1137 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1138 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1139 goto Unresponsive; 1140 } 1141 1142 // If the currently focused window is still working on previous events then keep waiting. 1143 if (! isWindowFinishedWithPreviousInputLocked(mFocusedWindow)) { 1144#if DEBUG_FOCUS 1145 LOGD("Waiting because focused window still processing previous input."); 1146#endif 1147 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1148 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1149 goto Unresponsive; 1150 } 1151 1152 // Success! Output targets. 1153 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1154 addWindowTargetLocked(mFocusedWindow, 1155 InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0)); 1156 1157 // Done. 1158Failed: 1159Unresponsive: 1160 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1161 updateDispatchStatisticsLocked(currentTime, entry, 1162 injectionResult, timeSpentWaitingForApplication); 1163#if DEBUG_FOCUS 1164 LOGD("findFocusedWindow finished: injectionResult=%d, " 1165 "timeSpendWaitingForApplication=%0.1fms", 1166 injectionResult, timeSpentWaitingForApplication / 1000000.0); 1167#endif 1168 return injectionResult; 1169} 1170 1171int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime, 1172 const MotionEntry* entry, nsecs_t* nextWakeupTime, bool* outConflictingPointerActions, 1173 const MotionSample** outSplitBatchAfterSample) { 1174 enum InjectionPermission { 1175 INJECTION_PERMISSION_UNKNOWN, 1176 INJECTION_PERMISSION_GRANTED, 1177 INJECTION_PERMISSION_DENIED 1178 }; 1179 1180 mCurrentInputTargets.clear(); 1181 1182 nsecs_t startTime = now(); 1183 1184 // For security reasons, we defer updating the touch state until we are sure that 1185 // event injection will be allowed. 1186 // 1187 // FIXME In the original code, screenWasOff could never be set to true. 1188 // The reason is that the POLICY_FLAG_WOKE_HERE 1189 // and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw 1190 // EV_KEY, EV_REL and EV_ABS events. As it happens, the touch event was 1191 // actually enqueued using the policyFlags that appeared in the final EV_SYN 1192 // events upon which no preprocessing took place. So policyFlags was always 0. 1193 // In the new native input dispatcher we're a bit more careful about event 1194 // preprocessing so the touches we receive can actually have non-zero policyFlags. 1195 // Unfortunately we obtain undesirable behavior. 1196 // 1197 // Here's what happens: 1198 // 1199 // When the device dims in anticipation of going to sleep, touches 1200 // in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause 1201 // the device to brighten and reset the user activity timer. 1202 // Touches on other windows (such as the launcher window) 1203 // are dropped. Then after a moment, the device goes to sleep. Oops. 1204 // 1205 // Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE 1206 // instead of POLICY_FLAG_WOKE_HERE... 1207 // 1208 bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE; 1209 1210 int32_t action = entry->action; 1211 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 1212 1213 // Update the touch state as needed based on the properties of the touch event. 1214 int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING; 1215 InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1216 const InputWindow* newHoverWindow = NULL; 1217 1218 bool isSplit = mTouchState.split; 1219 bool wrongDevice = mTouchState.down 1220 && (mTouchState.deviceId != entry->deviceId 1221 || mTouchState.source != entry->source); 1222 bool isHoverAction = (maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1223 || maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER 1224 || maskedAction == AMOTION_EVENT_ACTION_HOVER_EXIT); 1225 bool newGesture = (maskedAction == AMOTION_EVENT_ACTION_DOWN 1226 || maskedAction == AMOTION_EVENT_ACTION_SCROLL 1227 || isHoverAction); 1228 if (newGesture) { 1229 bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN; 1230 if (wrongDevice && !down) { 1231 mTempTouchState.copyFrom(mTouchState); 1232 } else { 1233 mTempTouchState.reset(); 1234 mTempTouchState.down = down; 1235 mTempTouchState.deviceId = entry->deviceId; 1236 mTempTouchState.source = entry->source; 1237 isSplit = false; 1238 wrongDevice = false; 1239 } 1240 } else { 1241 mTempTouchState.copyFrom(mTouchState); 1242 } 1243 if (wrongDevice) { 1244#if DEBUG_FOCUS 1245 LOGD("Dropping event because a pointer for a different device is already down."); 1246#endif 1247 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1248 goto Failed; 1249 } 1250 1251 if (newGesture || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN)) { 1252 /* Case 1: New splittable pointer going down, or need target for hover or scroll. */ 1253 1254 const MotionSample* sample = &entry->firstSample; 1255 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1256 int32_t x = int32_t(sample->pointerCoords[pointerIndex]. 1257 getAxisValue(AMOTION_EVENT_AXIS_X)); 1258 int32_t y = int32_t(sample->pointerCoords[pointerIndex]. 1259 getAxisValue(AMOTION_EVENT_AXIS_Y)); 1260 const InputWindow* newTouchedWindow = NULL; 1261 const InputWindow* topErrorWindow = NULL; 1262 bool isTouchModal = false; 1263 1264 // Traverse windows from front to back to find touched window and outside targets. 1265 size_t numWindows = mWindows.size(); 1266 for (size_t i = 0; i < numWindows; i++) { 1267 const InputWindow* window = & mWindows.editItemAt(i); 1268 int32_t flags = window->layoutParamsFlags; 1269 1270 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 1271 if (! topErrorWindow) { 1272 topErrorWindow = window; 1273 } 1274 } 1275 1276 if (window->visible) { 1277 if (! (flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 1278 isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 1279 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 1280 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 1281 if (! screenWasOff || flags & InputWindow::FLAG_TOUCHABLE_WHEN_WAKING) { 1282 newTouchedWindow = window; 1283 } 1284 break; // found touched window, exit window loop 1285 } 1286 } 1287 1288 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1289 && (flags & InputWindow::FLAG_WATCH_OUTSIDE_TOUCH)) { 1290 int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE; 1291 if (isWindowObscuredAtPointLocked(window, x, y)) { 1292 outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1293 } 1294 1295 mTempTouchState.addOrUpdateWindow(window, outsideTargetFlags, BitSet32(0)); 1296 } 1297 } 1298 } 1299 1300 // If there is an error window but it is not taking focus (typically because 1301 // it is invisible) then wait for it. Any other focused window may in 1302 // fact be in ANR state. 1303 if (topErrorWindow && newTouchedWindow != topErrorWindow) { 1304#if DEBUG_FOCUS 1305 LOGD("Waiting because system error window is pending."); 1306#endif 1307 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1308 NULL, NULL, nextWakeupTime); 1309 injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1310 goto Unresponsive; 1311 } 1312 1313 // Figure out whether splitting will be allowed for this window. 1314 if (newTouchedWindow && newTouchedWindow->supportsSplitTouch()) { 1315 // New window supports splitting. 1316 isSplit = true; 1317 } else if (isSplit) { 1318 // New window does not support splitting but we have already split events. 1319 // Assign the pointer to the first foreground window we find. 1320 // (May be NULL which is why we put this code block before the next check.) 1321 newTouchedWindow = mTempTouchState.getFirstForegroundWindow(); 1322 } 1323 1324 // If we did not find a touched window then fail. 1325 if (! newTouchedWindow) { 1326 if (mFocusedApplication) { 1327#if DEBUG_FOCUS 1328 LOGD("Waiting because there is no touched window but there is a " 1329 "focused application that may eventually add a new window: %s.", 1330 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1331#endif 1332 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1333 mFocusedApplication, NULL, nextWakeupTime); 1334 goto Unresponsive; 1335 } 1336 1337 LOGI("Dropping event because there is no touched window or focused application."); 1338 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1339 goto Failed; 1340 } 1341 1342 // Set target flags. 1343 int32_t targetFlags = InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS; 1344 if (isSplit) { 1345 targetFlags |= InputTarget::FLAG_SPLIT; 1346 } 1347 if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) { 1348 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1349 } 1350 1351 // Update hover state. 1352 if (isHoverAction) { 1353 newHoverWindow = newTouchedWindow; 1354 1355 // Ensure all subsequent motion samples are also within the touched window. 1356 // Set *outSplitBatchAfterSample to the sample before the first one that is not 1357 // within the touched window. 1358 if (!isTouchModal) { 1359 while (sample->next) { 1360 if (!newHoverWindow->touchableRegionContainsPoint( 1361 sample->next->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X), 1362 sample->next->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y))) { 1363 *outSplitBatchAfterSample = sample; 1364 break; 1365 } 1366 sample = sample->next; 1367 } 1368 } 1369 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1370 newHoverWindow = mLastHoverWindow; 1371 } 1372 1373 // Update the temporary touch state. 1374 BitSet32 pointerIds; 1375 if (isSplit) { 1376 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1377 pointerIds.markBit(pointerId); 1378 } 1379 mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds); 1380 } else { 1381 /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */ 1382 1383 // If the pointer is not currently down, then ignore the event. 1384 if (! mTempTouchState.down) { 1385#if DEBUG_FOCUS 1386 LOGD("Dropping event because the pointer is not down or we previously " 1387 "dropped the pointer down event."); 1388#endif 1389 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1390 goto Failed; 1391 } 1392 } 1393 1394 if (newHoverWindow != mLastHoverWindow) { 1395 // Split the batch here so we send exactly one sample as part of ENTER or EXIT. 1396 *outSplitBatchAfterSample = &entry->firstSample; 1397 1398 // Let the previous window know that the hover sequence is over. 1399 if (mLastHoverWindow) { 1400#if DEBUG_HOVER 1401 LOGD("Sending hover exit event to window %s.", mLastHoverWindow->name.string()); 1402#endif 1403 mTempTouchState.addOrUpdateWindow(mLastHoverWindow, 1404 InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT, BitSet32(0)); 1405 } 1406 1407 // Let the new window know that the hover sequence is starting. 1408 if (newHoverWindow) { 1409#if DEBUG_HOVER 1410 LOGD("Sending hover enter event to window %s.", newHoverWindow->name.string()); 1411#endif 1412 mTempTouchState.addOrUpdateWindow(newHoverWindow, 1413 InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER, BitSet32(0)); 1414 } 1415 } 1416 1417 // Check permission to inject into all touched foreground windows and ensure there 1418 // is at least one touched foreground window. 1419 { 1420 bool haveForegroundWindow = false; 1421 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1422 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1423 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1424 haveForegroundWindow = true; 1425 if (! checkInjectionPermission(touchedWindow.window, entry->injectionState)) { 1426 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1427 injectionPermission = INJECTION_PERMISSION_DENIED; 1428 goto Failed; 1429 } 1430 } 1431 } 1432 if (! haveForegroundWindow) { 1433#if DEBUG_FOCUS 1434 LOGD("Dropping event because there is no touched foreground window to receive it."); 1435#endif 1436 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1437 goto Failed; 1438 } 1439 1440 // Permission granted to injection into all touched foreground windows. 1441 injectionPermission = INJECTION_PERMISSION_GRANTED; 1442 } 1443 1444 // Ensure all touched foreground windows are ready for new input. 1445 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1446 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1447 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1448 // If the touched window is paused then keep waiting. 1449 if (touchedWindow.window->paused) { 1450#if DEBUG_FOCUS 1451 LOGD("Waiting because touched window is paused."); 1452#endif 1453 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1454 NULL, touchedWindow.window, nextWakeupTime); 1455 goto Unresponsive; 1456 } 1457 1458 // If the touched window is still working on previous events then keep waiting. 1459 if (! isWindowFinishedWithPreviousInputLocked(touchedWindow.window)) { 1460#if DEBUG_FOCUS 1461 LOGD("Waiting because touched window still processing previous input."); 1462#endif 1463 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1464 NULL, touchedWindow.window, nextWakeupTime); 1465 goto Unresponsive; 1466 } 1467 } 1468 } 1469 1470 // If this is the first pointer going down and the touched window has a wallpaper 1471 // then also add the touched wallpaper windows so they are locked in for the duration 1472 // of the touch gesture. 1473 // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper 1474 // engine only supports touch events. We would need to add a mechanism similar 1475 // to View.onGenericMotionEvent to enable wallpapers to handle these events. 1476 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1477 const InputWindow* foregroundWindow = mTempTouchState.getFirstForegroundWindow(); 1478 if (foregroundWindow->hasWallpaper) { 1479 for (size_t i = 0; i < mWindows.size(); i++) { 1480 const InputWindow* window = & mWindows[i]; 1481 if (window->layoutParamsType == InputWindow::TYPE_WALLPAPER) { 1482 mTempTouchState.addOrUpdateWindow(window, 1483 InputTarget::FLAG_WINDOW_IS_OBSCURED 1484 | InputTarget::FLAG_DISPATCH_AS_IS, 1485 BitSet32(0)); 1486 } 1487 } 1488 } 1489 } 1490 1491 // Success! Output targets. 1492 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1493 1494 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1495 const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i); 1496 addWindowTargetLocked(touchedWindow.window, touchedWindow.targetFlags, 1497 touchedWindow.pointerIds); 1498 } 1499 1500 // Drop the outside or hover touch windows since we will not care about them 1501 // in the next iteration. 1502 mTempTouchState.filterNonAsIsTouchWindows(); 1503 1504Failed: 1505 // Check injection permission once and for all. 1506 if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) { 1507 if (checkInjectionPermission(NULL, entry->injectionState)) { 1508 injectionPermission = INJECTION_PERMISSION_GRANTED; 1509 } else { 1510 injectionPermission = INJECTION_PERMISSION_DENIED; 1511 } 1512 } 1513 1514 // Update final pieces of touch state if the injector had permission. 1515 if (injectionPermission == INJECTION_PERMISSION_GRANTED) { 1516 if (!wrongDevice) { 1517 if (maskedAction == AMOTION_EVENT_ACTION_UP 1518 || maskedAction == AMOTION_EVENT_ACTION_CANCEL 1519 || isHoverAction) { 1520 // All pointers up or canceled. 1521 mTouchState.reset(); 1522 } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1523 // First pointer went down. 1524 if (mTouchState.down) { 1525 *outConflictingPointerActions = true; 1526#if DEBUG_FOCUS 1527 LOGD("Pointer down received while already down."); 1528#endif 1529 } 1530 mTouchState.copyFrom(mTempTouchState); 1531 } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 1532 // One pointer went up. 1533 if (isSplit) { 1534 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1535 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1536 1537 for (size_t i = 0; i < mTempTouchState.windows.size(); ) { 1538 TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i); 1539 if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) { 1540 touchedWindow.pointerIds.clearBit(pointerId); 1541 if (touchedWindow.pointerIds.isEmpty()) { 1542 mTempTouchState.windows.removeAt(i); 1543 continue; 1544 } 1545 } 1546 i += 1; 1547 } 1548 } 1549 mTouchState.copyFrom(mTempTouchState); 1550 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1551 // Discard temporary touch state since it was only valid for this action. 1552 } else { 1553 // Save changes to touch state as-is for all other actions. 1554 mTouchState.copyFrom(mTempTouchState); 1555 } 1556 1557 // Update hover state. 1558 mLastHoverWindow = newHoverWindow; 1559 } 1560 } else { 1561#if DEBUG_FOCUS 1562 LOGD("Not updating touch focus because injection was denied."); 1563#endif 1564 } 1565 1566Unresponsive: 1567 // Reset temporary touch state to ensure we release unnecessary references to input channels. 1568 mTempTouchState.reset(); 1569 1570 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1571 updateDispatchStatisticsLocked(currentTime, entry, 1572 injectionResult, timeSpentWaitingForApplication); 1573#if DEBUG_FOCUS 1574 LOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, " 1575 "timeSpentWaitingForApplication=%0.1fms", 1576 injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0); 1577#endif 1578 return injectionResult; 1579} 1580 1581void InputDispatcher::addWindowTargetLocked(const InputWindow* window, int32_t targetFlags, 1582 BitSet32 pointerIds) { 1583 mCurrentInputTargets.push(); 1584 1585 InputTarget& target = mCurrentInputTargets.editTop(); 1586 target.inputChannel = window->inputChannel; 1587 target.flags = targetFlags; 1588 target.xOffset = - window->frameLeft; 1589 target.yOffset = - window->frameTop; 1590 target.pointerIds = pointerIds; 1591} 1592 1593void InputDispatcher::addMonitoringTargetsLocked() { 1594 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 1595 mCurrentInputTargets.push(); 1596 1597 InputTarget& target = mCurrentInputTargets.editTop(); 1598 target.inputChannel = mMonitoringChannels[i]; 1599 target.flags = InputTarget::FLAG_DISPATCH_AS_IS; 1600 target.xOffset = 0; 1601 target.yOffset = 0; 1602 target.pointerIds.clear(); 1603 } 1604} 1605 1606bool InputDispatcher::checkInjectionPermission(const InputWindow* window, 1607 const InjectionState* injectionState) { 1608 if (injectionState 1609 && (window == NULL || window->ownerUid != injectionState->injectorUid) 1610 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1611 if (window) { 1612 LOGW("Permission denied: injecting event from pid %d uid %d to window " 1613 "with input channel %s owned by uid %d", 1614 injectionState->injectorPid, injectionState->injectorUid, 1615 window->inputChannel->getName().string(), 1616 window->ownerUid); 1617 } else { 1618 LOGW("Permission denied: injecting event from pid %d uid %d", 1619 injectionState->injectorPid, injectionState->injectorUid); 1620 } 1621 return false; 1622 } 1623 return true; 1624} 1625 1626bool InputDispatcher::isWindowObscuredAtPointLocked( 1627 const InputWindow* window, int32_t x, int32_t y) const { 1628 size_t numWindows = mWindows.size(); 1629 for (size_t i = 0; i < numWindows; i++) { 1630 const InputWindow* other = & mWindows.itemAt(i); 1631 if (other == window) { 1632 break; 1633 } 1634 if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) { 1635 return true; 1636 } 1637 } 1638 return false; 1639} 1640 1641bool InputDispatcher::isWindowFinishedWithPreviousInputLocked(const InputWindow* window) { 1642 ssize_t connectionIndex = getConnectionIndexLocked(window->inputChannel); 1643 if (connectionIndex >= 0) { 1644 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1645 return connection->outboundQueue.isEmpty(); 1646 } else { 1647 return true; 1648 } 1649} 1650 1651String8 InputDispatcher::getApplicationWindowLabelLocked(const InputApplication* application, 1652 const InputWindow* window) { 1653 if (application) { 1654 if (window) { 1655 String8 label(application->name); 1656 label.append(" - "); 1657 label.append(window->name); 1658 return label; 1659 } else { 1660 return application->name; 1661 } 1662 } else if (window) { 1663 return window->name; 1664 } else { 1665 return String8("<unknown application or window>"); 1666 } 1667} 1668 1669void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1670 int32_t eventType = POWER_MANAGER_OTHER_EVENT; 1671 switch (eventEntry->type) { 1672 case EventEntry::TYPE_MOTION: { 1673 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1674 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1675 return; 1676 } 1677 1678 if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) { 1679 eventType = POWER_MANAGER_TOUCH_EVENT; 1680 } 1681 break; 1682 } 1683 case EventEntry::TYPE_KEY: { 1684 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1685 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1686 return; 1687 } 1688 eventType = POWER_MANAGER_BUTTON_EVENT; 1689 break; 1690 } 1691 } 1692 1693 CommandEntry* commandEntry = postCommandLocked( 1694 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1695 commandEntry->eventTime = eventEntry->eventTime; 1696 commandEntry->userActivityEventType = eventType; 1697} 1698 1699void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1700 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1701 bool resumeWithAppendedMotionSample) { 1702#if DEBUG_DISPATCH_CYCLE 1703 LOGD("channel '%s' ~ prepareDispatchCycle - flags=%d, " 1704 "xOffset=%f, yOffset=%f, " 1705 "pointerIds=0x%x, " 1706 "resumeWithAppendedMotionSample=%s", 1707 connection->getInputChannelName(), inputTarget->flags, 1708 inputTarget->xOffset, inputTarget->yOffset, 1709 inputTarget->pointerIds.value, 1710 toString(resumeWithAppendedMotionSample)); 1711#endif 1712 1713 // Make sure we are never called for streaming when splitting across multiple windows. 1714 bool isSplit = inputTarget->flags & InputTarget::FLAG_SPLIT; 1715 LOG_ASSERT(! (resumeWithAppendedMotionSample && isSplit)); 1716 1717 // Skip this event if the connection status is not normal. 1718 // We don't want to enqueue additional outbound events if the connection is broken. 1719 if (connection->status != Connection::STATUS_NORMAL) { 1720#if DEBUG_DISPATCH_CYCLE 1721 LOGD("channel '%s' ~ Dropping event because the channel status is %s", 1722 connection->getInputChannelName(), connection->getStatusLabel()); 1723#endif 1724 return; 1725 } 1726 1727 // Split a motion event if needed. 1728 if (isSplit) { 1729 LOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION); 1730 1731 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1732 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1733 MotionEntry* splitMotionEntry = splitMotionEvent( 1734 originalMotionEntry, inputTarget->pointerIds); 1735 if (!splitMotionEntry) { 1736 return; // split event was dropped 1737 } 1738#if DEBUG_FOCUS 1739 LOGD("channel '%s' ~ Split motion event.", 1740 connection->getInputChannelName()); 1741 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1742#endif 1743 eventEntry = splitMotionEntry; 1744 } 1745 } 1746 1747 // Resume the dispatch cycle with a freshly appended motion sample. 1748 // First we check that the last dispatch entry in the outbound queue is for the same 1749 // motion event to which we appended the motion sample. If we find such a dispatch 1750 // entry, and if it is currently in progress then we try to stream the new sample. 1751 bool wasEmpty = connection->outboundQueue.isEmpty(); 1752 1753 if (! wasEmpty && resumeWithAppendedMotionSample) { 1754 DispatchEntry* motionEventDispatchEntry = 1755 connection->findQueuedDispatchEntryForEvent(eventEntry); 1756 if (motionEventDispatchEntry) { 1757 // If the dispatch entry is not in progress, then we must be busy dispatching an 1758 // earlier event. Not a problem, the motion event is on the outbound queue and will 1759 // be dispatched later. 1760 if (! motionEventDispatchEntry->inProgress) { 1761#if DEBUG_BATCHING 1762 LOGD("channel '%s' ~ Not streaming because the motion event has " 1763 "not yet been dispatched. " 1764 "(Waiting for earlier events to be consumed.)", 1765 connection->getInputChannelName()); 1766#endif 1767 return; 1768 } 1769 1770 // If the dispatch entry is in progress but it already has a tail of pending 1771 // motion samples, then it must mean that the shared memory buffer filled up. 1772 // Not a problem, when this dispatch cycle is finished, we will eventually start 1773 // a new dispatch cycle to process the tail and that tail includes the newly 1774 // appended motion sample. 1775 if (motionEventDispatchEntry->tailMotionSample) { 1776#if DEBUG_BATCHING 1777 LOGD("channel '%s' ~ Not streaming because no new samples can " 1778 "be appended to the motion event in this dispatch cycle. " 1779 "(Waiting for next dispatch cycle to start.)", 1780 connection->getInputChannelName()); 1781#endif 1782 return; 1783 } 1784 1785 // The dispatch entry is in progress and is still potentially open for streaming. 1786 // Try to stream the new motion sample. This might fail if the consumer has already 1787 // consumed the motion event (or if the channel is broken). 1788 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1789 MotionSample* appendedMotionSample = motionEntry->lastSample; 1790 status_t status = connection->inputPublisher.appendMotionSample( 1791 appendedMotionSample->eventTime, appendedMotionSample->pointerCoords); 1792 if (status == OK) { 1793#if DEBUG_BATCHING 1794 LOGD("channel '%s' ~ Successfully streamed new motion sample.", 1795 connection->getInputChannelName()); 1796#endif 1797 return; 1798 } 1799 1800#if DEBUG_BATCHING 1801 if (status == NO_MEMORY) { 1802 LOGD("channel '%s' ~ Could not append motion sample to currently " 1803 "dispatched move event because the shared memory buffer is full. " 1804 "(Waiting for next dispatch cycle to start.)", 1805 connection->getInputChannelName()); 1806 } else if (status == status_t(FAILED_TRANSACTION)) { 1807 LOGD("channel '%s' ~ Could not append motion sample to currently " 1808 "dispatched move event because the event has already been consumed. " 1809 "(Waiting for next dispatch cycle to start.)", 1810 connection->getInputChannelName()); 1811 } else { 1812 LOGD("channel '%s' ~ Could not append motion sample to currently " 1813 "dispatched move event due to an error, status=%d. " 1814 "(Waiting for next dispatch cycle to start.)", 1815 connection->getInputChannelName(), status); 1816 } 1817#endif 1818 // Failed to stream. Start a new tail of pending motion samples to dispatch 1819 // in the next cycle. 1820 motionEventDispatchEntry->tailMotionSample = appendedMotionSample; 1821 return; 1822 } 1823 } 1824 1825 // Enqueue dispatch entries for the requested modes. 1826 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1827 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT); 1828 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1829 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_OUTSIDE); 1830 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1831 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER); 1832 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1833 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_IS); 1834 1835 // If the outbound queue was previously empty, start the dispatch cycle going. 1836 if (wasEmpty && !connection->outboundQueue.isEmpty()) { 1837 activateConnectionLocked(connection.get()); 1838 startDispatchCycleLocked(currentTime, connection); 1839 } 1840} 1841 1842void InputDispatcher::enqueueDispatchEntryLocked( 1843 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1844 bool resumeWithAppendedMotionSample, int32_t dispatchMode) { 1845 int32_t inputTargetFlags = inputTarget->flags; 1846 if (!(inputTargetFlags & dispatchMode)) { 1847 return; 1848 } 1849 inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode; 1850 1851 // This is a new event. 1852 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1853 DispatchEntry* dispatchEntry = mAllocator.obtainDispatchEntry(eventEntry, // increments ref 1854 inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset); 1855 if (dispatchEntry->hasForegroundTarget()) { 1856 incrementPendingForegroundDispatchesLocked(eventEntry); 1857 } 1858 1859 // Handle the case where we could not stream a new motion sample because the consumer has 1860 // already consumed the motion event (otherwise the corresponding dispatch entry would 1861 // still be in the outbound queue for this connection). We set the head motion sample 1862 // to the list starting with the newly appended motion sample. 1863 if (resumeWithAppendedMotionSample) { 1864#if DEBUG_BATCHING 1865 LOGD("channel '%s' ~ Preparing a new dispatch cycle for additional motion samples " 1866 "that cannot be streamed because the motion event has already been consumed.", 1867 connection->getInputChannelName()); 1868#endif 1869 MotionSample* appendedMotionSample = static_cast<MotionEntry*>(eventEntry)->lastSample; 1870 dispatchEntry->headMotionSample = appendedMotionSample; 1871 } 1872 1873 // Enqueue the dispatch entry. 1874 connection->outboundQueue.enqueueAtTail(dispatchEntry); 1875} 1876 1877void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 1878 const sp<Connection>& connection) { 1879#if DEBUG_DISPATCH_CYCLE 1880 LOGD("channel '%s' ~ startDispatchCycle", 1881 connection->getInputChannelName()); 1882#endif 1883 1884 LOG_ASSERT(connection->status == Connection::STATUS_NORMAL); 1885 LOG_ASSERT(! connection->outboundQueue.isEmpty()); 1886 1887 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1888 LOG_ASSERT(! dispatchEntry->inProgress); 1889 1890 // Mark the dispatch entry as in progress. 1891 dispatchEntry->inProgress = true; 1892 1893 // Publish the event. 1894 status_t status; 1895 EventEntry* eventEntry = dispatchEntry->eventEntry; 1896 switch (eventEntry->type) { 1897 case EventEntry::TYPE_KEY: { 1898 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1899 1900 // Apply target flags. 1901 int32_t action = keyEntry->action; 1902 int32_t flags = keyEntry->flags; 1903 1904 // Update the connection's input state. 1905 connection->inputState.trackKey(keyEntry, action); 1906 1907 // Publish the key event. 1908 status = connection->inputPublisher.publishKeyEvent(keyEntry->deviceId, keyEntry->source, 1909 action, flags, keyEntry->keyCode, keyEntry->scanCode, 1910 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 1911 keyEntry->eventTime); 1912 1913 if (status) { 1914 LOGE("channel '%s' ~ Could not publish key event, " 1915 "status=%d", connection->getInputChannelName(), status); 1916 abortBrokenDispatchCycleLocked(currentTime, connection); 1917 return; 1918 } 1919 break; 1920 } 1921 1922 case EventEntry::TYPE_MOTION: { 1923 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1924 1925 // Apply target flags. 1926 int32_t action = motionEntry->action; 1927 int32_t flags = motionEntry->flags; 1928 if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 1929 action = AMOTION_EVENT_ACTION_OUTSIDE; 1930 } else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) { 1931 action = AMOTION_EVENT_ACTION_HOVER_EXIT; 1932 } else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) { 1933 action = AMOTION_EVENT_ACTION_HOVER_ENTER; 1934 } 1935 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 1936 flags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 1937 } 1938 1939 // If headMotionSample is non-NULL, then it points to the first new sample that we 1940 // were unable to dispatch during the previous cycle so we resume dispatching from 1941 // that point in the list of motion samples. 1942 // Otherwise, we just start from the first sample of the motion event. 1943 MotionSample* firstMotionSample = dispatchEntry->headMotionSample; 1944 if (! firstMotionSample) { 1945 firstMotionSample = & motionEntry->firstSample; 1946 } 1947 1948 // Set the X and Y offset depending on the input source. 1949 float xOffset, yOffset; 1950 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 1951 xOffset = dispatchEntry->xOffset; 1952 yOffset = dispatchEntry->yOffset; 1953 } else { 1954 xOffset = 0.0f; 1955 yOffset = 0.0f; 1956 } 1957 1958 // Update the connection's input state. 1959 connection->inputState.trackMotion(motionEntry, action); 1960 1961 // Publish the motion event and the first motion sample. 1962 status = connection->inputPublisher.publishMotionEvent(motionEntry->deviceId, 1963 motionEntry->source, action, flags, motionEntry->edgeFlags, motionEntry->metaState, 1964 xOffset, yOffset, 1965 motionEntry->xPrecision, motionEntry->yPrecision, 1966 motionEntry->downTime, firstMotionSample->eventTime, 1967 motionEntry->pointerCount, motionEntry->pointerIds, 1968 firstMotionSample->pointerCoords); 1969 1970 if (status) { 1971 LOGE("channel '%s' ~ Could not publish motion event, " 1972 "status=%d", connection->getInputChannelName(), status); 1973 abortBrokenDispatchCycleLocked(currentTime, connection); 1974 return; 1975 } 1976 1977 if (action == AMOTION_EVENT_ACTION_MOVE 1978 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1979 // Append additional motion samples. 1980 MotionSample* nextMotionSample = firstMotionSample->next; 1981 for (; nextMotionSample != NULL; nextMotionSample = nextMotionSample->next) { 1982 status = connection->inputPublisher.appendMotionSample( 1983 nextMotionSample->eventTime, nextMotionSample->pointerCoords); 1984 if (status == NO_MEMORY) { 1985#if DEBUG_DISPATCH_CYCLE 1986 LOGD("channel '%s' ~ Shared memory buffer full. Some motion samples will " 1987 "be sent in the next dispatch cycle.", 1988 connection->getInputChannelName()); 1989#endif 1990 break; 1991 } 1992 if (status != OK) { 1993 LOGE("channel '%s' ~ Could not append motion sample " 1994 "for a reason other than out of memory, status=%d", 1995 connection->getInputChannelName(), status); 1996 abortBrokenDispatchCycleLocked(currentTime, connection); 1997 return; 1998 } 1999 } 2000 2001 // Remember the next motion sample that we could not dispatch, in case we ran out 2002 // of space in the shared memory buffer. 2003 dispatchEntry->tailMotionSample = nextMotionSample; 2004 } 2005 break; 2006 } 2007 2008 default: { 2009 LOG_ASSERT(false); 2010 } 2011 } 2012 2013 // Send the dispatch signal. 2014 status = connection->inputPublisher.sendDispatchSignal(); 2015 if (status) { 2016 LOGE("channel '%s' ~ Could not send dispatch signal, status=%d", 2017 connection->getInputChannelName(), status); 2018 abortBrokenDispatchCycleLocked(currentTime, connection); 2019 return; 2020 } 2021 2022 // Record information about the newly started dispatch cycle. 2023 connection->lastEventTime = eventEntry->eventTime; 2024 connection->lastDispatchTime = currentTime; 2025 2026 // Notify other system components. 2027 onDispatchCycleStartedLocked(currentTime, connection); 2028} 2029 2030void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 2031 const sp<Connection>& connection, bool handled) { 2032#if DEBUG_DISPATCH_CYCLE 2033 LOGD("channel '%s' ~ finishDispatchCycle - %01.1fms since event, " 2034 "%01.1fms since dispatch, handled=%s", 2035 connection->getInputChannelName(), 2036 connection->getEventLatencyMillis(currentTime), 2037 connection->getDispatchLatencyMillis(currentTime), 2038 toString(handled)); 2039#endif 2040 2041 if (connection->status == Connection::STATUS_BROKEN 2042 || connection->status == Connection::STATUS_ZOMBIE) { 2043 return; 2044 } 2045 2046 // Reset the publisher since the event has been consumed. 2047 // We do this now so that the publisher can release some of its internal resources 2048 // while waiting for the next dispatch cycle to begin. 2049 status_t status = connection->inputPublisher.reset(); 2050 if (status) { 2051 LOGE("channel '%s' ~ Could not reset publisher, status=%d", 2052 connection->getInputChannelName(), status); 2053 abortBrokenDispatchCycleLocked(currentTime, connection); 2054 return; 2055 } 2056 2057 // Notify other system components and prepare to start the next dispatch cycle. 2058 onDispatchCycleFinishedLocked(currentTime, connection, handled); 2059} 2060 2061void InputDispatcher::startNextDispatchCycleLocked(nsecs_t currentTime, 2062 const sp<Connection>& connection) { 2063 // Start the next dispatch cycle for this connection. 2064 while (! connection->outboundQueue.isEmpty()) { 2065 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2066 if (dispatchEntry->inProgress) { 2067 // Finish or resume current event in progress. 2068 if (dispatchEntry->tailMotionSample) { 2069 // We have a tail of undispatched motion samples. 2070 // Reuse the same DispatchEntry and start a new cycle. 2071 dispatchEntry->inProgress = false; 2072 dispatchEntry->headMotionSample = dispatchEntry->tailMotionSample; 2073 dispatchEntry->tailMotionSample = NULL; 2074 startDispatchCycleLocked(currentTime, connection); 2075 return; 2076 } 2077 // Finished. 2078 connection->outboundQueue.dequeueAtHead(); 2079 if (dispatchEntry->hasForegroundTarget()) { 2080 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2081 } 2082 mAllocator.releaseDispatchEntry(dispatchEntry); 2083 } else { 2084 // If the head is not in progress, then we must have already dequeued the in 2085 // progress event, which means we actually aborted it. 2086 // So just start the next event for this connection. 2087 startDispatchCycleLocked(currentTime, connection); 2088 return; 2089 } 2090 } 2091 2092 // Outbound queue is empty, deactivate the connection. 2093 deactivateConnectionLocked(connection.get()); 2094} 2095 2096void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 2097 const sp<Connection>& connection) { 2098#if DEBUG_DISPATCH_CYCLE 2099 LOGD("channel '%s' ~ abortBrokenDispatchCycle", 2100 connection->getInputChannelName()); 2101#endif 2102 2103 // Clear the outbound queue. 2104 drainOutboundQueueLocked(connection.get()); 2105 2106 // The connection appears to be unrecoverably broken. 2107 // Ignore already broken or zombie connections. 2108 if (connection->status == Connection::STATUS_NORMAL) { 2109 connection->status = Connection::STATUS_BROKEN; 2110 2111 // Notify other system components. 2112 onDispatchCycleBrokenLocked(currentTime, connection); 2113 } 2114} 2115 2116void InputDispatcher::drainOutboundQueueLocked(Connection* connection) { 2117 while (! connection->outboundQueue.isEmpty()) { 2118 DispatchEntry* dispatchEntry = connection->outboundQueue.dequeueAtHead(); 2119 if (dispatchEntry->hasForegroundTarget()) { 2120 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2121 } 2122 mAllocator.releaseDispatchEntry(dispatchEntry); 2123 } 2124 2125 deactivateConnectionLocked(connection); 2126} 2127 2128int InputDispatcher::handleReceiveCallback(int receiveFd, int events, void* data) { 2129 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2130 2131 { // acquire lock 2132 AutoMutex _l(d->mLock); 2133 2134 ssize_t connectionIndex = d->mConnectionsByReceiveFd.indexOfKey(receiveFd); 2135 if (connectionIndex < 0) { 2136 LOGE("Received spurious receive callback for unknown input channel. " 2137 "fd=%d, events=0x%x", receiveFd, events); 2138 return 0; // remove the callback 2139 } 2140 2141 nsecs_t currentTime = now(); 2142 2143 sp<Connection> connection = d->mConnectionsByReceiveFd.valueAt(connectionIndex); 2144 if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) { 2145 LOGE("channel '%s' ~ Consumer closed input channel or an error occurred. " 2146 "events=0x%x", connection->getInputChannelName(), events); 2147 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2148 d->runCommandsLockedInterruptible(); 2149 return 0; // remove the callback 2150 } 2151 2152 if (! (events & ALOOPER_EVENT_INPUT)) { 2153 LOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2154 "events=0x%x", connection->getInputChannelName(), events); 2155 return 1; 2156 } 2157 2158 bool handled = false; 2159 status_t status = connection->inputPublisher.receiveFinishedSignal(&handled); 2160 if (status) { 2161 LOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2162 connection->getInputChannelName(), status); 2163 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2164 d->runCommandsLockedInterruptible(); 2165 return 0; // remove the callback 2166 } 2167 2168 d->finishDispatchCycleLocked(currentTime, connection, handled); 2169 d->runCommandsLockedInterruptible(); 2170 return 1; 2171 } // release lock 2172} 2173 2174void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2175 const CancelationOptions& options) { 2176 for (size_t i = 0; i < mConnectionsByReceiveFd.size(); i++) { 2177 synthesizeCancelationEventsForConnectionLocked( 2178 mConnectionsByReceiveFd.valueAt(i), options); 2179 } 2180} 2181 2182void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2183 const sp<InputChannel>& channel, const CancelationOptions& options) { 2184 ssize_t index = getConnectionIndexLocked(channel); 2185 if (index >= 0) { 2186 synthesizeCancelationEventsForConnectionLocked( 2187 mConnectionsByReceiveFd.valueAt(index), options); 2188 } 2189} 2190 2191void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2192 const sp<Connection>& connection, const CancelationOptions& options) { 2193 nsecs_t currentTime = now(); 2194 2195 mTempCancelationEvents.clear(); 2196 connection->inputState.synthesizeCancelationEvents(currentTime, & mAllocator, 2197 mTempCancelationEvents, options); 2198 2199 if (! mTempCancelationEvents.isEmpty() 2200 && connection->status != Connection::STATUS_BROKEN) { 2201#if DEBUG_OUTBOUND_EVENT_DETAILS 2202 LOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2203 "with reality: %s, mode=%d.", 2204 connection->getInputChannelName(), mTempCancelationEvents.size(), 2205 options.reason, options.mode); 2206#endif 2207 for (size_t i = 0; i < mTempCancelationEvents.size(); i++) { 2208 EventEntry* cancelationEventEntry = mTempCancelationEvents.itemAt(i); 2209 switch (cancelationEventEntry->type) { 2210 case EventEntry::TYPE_KEY: 2211 logOutboundKeyDetailsLocked("cancel - ", 2212 static_cast<KeyEntry*>(cancelationEventEntry)); 2213 break; 2214 case EventEntry::TYPE_MOTION: 2215 logOutboundMotionDetailsLocked("cancel - ", 2216 static_cast<MotionEntry*>(cancelationEventEntry)); 2217 break; 2218 } 2219 2220 int32_t xOffset, yOffset; 2221 const InputWindow* window = getWindowLocked(connection->inputChannel); 2222 if (window) { 2223 xOffset = -window->frameLeft; 2224 yOffset = -window->frameTop; 2225 } else { 2226 xOffset = 0; 2227 yOffset = 0; 2228 } 2229 2230 DispatchEntry* cancelationDispatchEntry = 2231 mAllocator.obtainDispatchEntry(cancelationEventEntry, // increments ref 2232 0, xOffset, yOffset); 2233 connection->outboundQueue.enqueueAtTail(cancelationDispatchEntry); 2234 2235 mAllocator.releaseEventEntry(cancelationEventEntry); 2236 } 2237 2238 if (!connection->outboundQueue.headSentinel.next->inProgress) { 2239 startDispatchCycleLocked(currentTime, connection); 2240 } 2241 } 2242} 2243 2244InputDispatcher::MotionEntry* 2245InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2246 LOG_ASSERT(pointerIds.value != 0); 2247 2248 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2249 int32_t splitPointerIds[MAX_POINTERS]; 2250 PointerCoords splitPointerCoords[MAX_POINTERS]; 2251 2252 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2253 uint32_t splitPointerCount = 0; 2254 2255 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2256 originalPointerIndex++) { 2257 int32_t pointerId = uint32_t(originalMotionEntry->pointerIds[originalPointerIndex]); 2258 if (pointerIds.hasBit(pointerId)) { 2259 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2260 splitPointerIds[splitPointerCount] = pointerId; 2261 splitPointerCoords[splitPointerCount].copyFrom( 2262 originalMotionEntry->firstSample.pointerCoords[originalPointerIndex]); 2263 splitPointerCount += 1; 2264 } 2265 } 2266 2267 if (splitPointerCount != pointerIds.count()) { 2268 // This is bad. We are missing some of the pointers that we expected to deliver. 2269 // Most likely this indicates that we received an ACTION_MOVE events that has 2270 // different pointer ids than we expected based on the previous ACTION_DOWN 2271 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2272 // in this way. 2273 LOGW("Dropping split motion event because the pointer count is %d but " 2274 "we expected there to be %d pointers. This probably means we received " 2275 "a broken sequence of pointer ids from the input device.", 2276 splitPointerCount, pointerIds.count()); 2277 return NULL; 2278 } 2279 2280 int32_t action = originalMotionEntry->action; 2281 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2282 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2283 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2284 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2285 int32_t pointerId = originalMotionEntry->pointerIds[originalPointerIndex]; 2286 if (pointerIds.hasBit(pointerId)) { 2287 if (pointerIds.count() == 1) { 2288 // The first/last pointer went down/up. 2289 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2290 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2291 } else { 2292 // A secondary pointer went down/up. 2293 uint32_t splitPointerIndex = 0; 2294 while (pointerId != splitPointerIds[splitPointerIndex]) { 2295 splitPointerIndex += 1; 2296 } 2297 action = maskedAction | (splitPointerIndex 2298 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2299 } 2300 } else { 2301 // An unrelated pointer changed. 2302 action = AMOTION_EVENT_ACTION_MOVE; 2303 } 2304 } 2305 2306 MotionEntry* splitMotionEntry = mAllocator.obtainMotionEntry( 2307 originalMotionEntry->eventTime, 2308 originalMotionEntry->deviceId, 2309 originalMotionEntry->source, 2310 originalMotionEntry->policyFlags, 2311 action, 2312 originalMotionEntry->flags, 2313 originalMotionEntry->metaState, 2314 originalMotionEntry->edgeFlags, 2315 originalMotionEntry->xPrecision, 2316 originalMotionEntry->yPrecision, 2317 originalMotionEntry->downTime, 2318 splitPointerCount, splitPointerIds, splitPointerCoords); 2319 2320 for (MotionSample* originalMotionSample = originalMotionEntry->firstSample.next; 2321 originalMotionSample != NULL; originalMotionSample = originalMotionSample->next) { 2322 for (uint32_t splitPointerIndex = 0; splitPointerIndex < splitPointerCount; 2323 splitPointerIndex++) { 2324 uint32_t originalPointerIndex = splitPointerIndexMap[splitPointerIndex]; 2325 splitPointerCoords[splitPointerIndex].copyFrom( 2326 originalMotionSample->pointerCoords[originalPointerIndex]); 2327 } 2328 2329 mAllocator.appendMotionSample(splitMotionEntry, originalMotionSample->eventTime, 2330 splitPointerCoords); 2331 } 2332 2333 if (originalMotionEntry->injectionState) { 2334 splitMotionEntry->injectionState = originalMotionEntry->injectionState; 2335 splitMotionEntry->injectionState->refCount += 1; 2336 } 2337 2338 return splitMotionEntry; 2339} 2340 2341void InputDispatcher::notifyConfigurationChanged(nsecs_t eventTime) { 2342#if DEBUG_INBOUND_EVENT_DETAILS 2343 LOGD("notifyConfigurationChanged - eventTime=%lld", eventTime); 2344#endif 2345 2346 bool needWake; 2347 { // acquire lock 2348 AutoMutex _l(mLock); 2349 2350 ConfigurationChangedEntry* newEntry = mAllocator.obtainConfigurationChangedEntry(eventTime); 2351 needWake = enqueueInboundEventLocked(newEntry); 2352 } // release lock 2353 2354 if (needWake) { 2355 mLooper->wake(); 2356 } 2357} 2358 2359void InputDispatcher::notifyKey(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2360 uint32_t policyFlags, int32_t action, int32_t flags, 2361 int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime) { 2362#if DEBUG_INBOUND_EVENT_DETAILS 2363 LOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2364 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2365 eventTime, deviceId, source, policyFlags, action, flags, 2366 keyCode, scanCode, metaState, downTime); 2367#endif 2368 if (! validateKeyEvent(action)) { 2369 return; 2370 } 2371 2372 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2373 policyFlags |= POLICY_FLAG_VIRTUAL; 2374 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2375 } 2376 if (policyFlags & POLICY_FLAG_ALT) { 2377 metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON; 2378 } 2379 if (policyFlags & POLICY_FLAG_ALT_GR) { 2380 metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON; 2381 } 2382 if (policyFlags & POLICY_FLAG_SHIFT) { 2383 metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON; 2384 } 2385 if (policyFlags & POLICY_FLAG_CAPS_LOCK) { 2386 metaState |= AMETA_CAPS_LOCK_ON; 2387 } 2388 if (policyFlags & POLICY_FLAG_FUNCTION) { 2389 metaState |= AMETA_FUNCTION_ON; 2390 } 2391 2392 policyFlags |= POLICY_FLAG_TRUSTED; 2393 2394 KeyEvent event; 2395 event.initialize(deviceId, source, action, flags, keyCode, scanCode, 2396 metaState, 0, downTime, eventTime); 2397 2398 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2399 2400 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2401 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2402 } 2403 2404 bool needWake; 2405 { // acquire lock 2406 mLock.lock(); 2407 2408 if (mInputFilterEnabled) { 2409 mLock.unlock(); 2410 2411 policyFlags |= POLICY_FLAG_FILTERED; 2412 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2413 return; // event was consumed by the filter 2414 } 2415 2416 mLock.lock(); 2417 } 2418 2419 int32_t repeatCount = 0; 2420 KeyEntry* newEntry = mAllocator.obtainKeyEntry(eventTime, 2421 deviceId, source, policyFlags, action, flags, keyCode, scanCode, 2422 metaState, repeatCount, downTime); 2423 2424 needWake = enqueueInboundEventLocked(newEntry); 2425 mLock.unlock(); 2426 } // release lock 2427 2428 if (needWake) { 2429 mLooper->wake(); 2430 } 2431} 2432 2433void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2434 uint32_t policyFlags, int32_t action, int32_t flags, int32_t metaState, int32_t edgeFlags, 2435 uint32_t pointerCount, const int32_t* pointerIds, const PointerCoords* pointerCoords, 2436 float xPrecision, float yPrecision, nsecs_t downTime) { 2437#if DEBUG_INBOUND_EVENT_DETAILS 2438 LOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2439 "action=0x%x, flags=0x%x, metaState=0x%x, edgeFlags=0x%x, " 2440 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2441 eventTime, deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2442 xPrecision, yPrecision, downTime); 2443 for (uint32_t i = 0; i < pointerCount; i++) { 2444 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 2445 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2446 "orientation=%f", 2447 i, pointerIds[i], 2448 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2449 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2450 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2451 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2452 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2453 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2454 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2455 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2456 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2457 } 2458#endif 2459 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2460 return; 2461 } 2462 2463 policyFlags |= POLICY_FLAG_TRUSTED; 2464 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2465 2466 bool needWake; 2467 { // acquire lock 2468 mLock.lock(); 2469 2470 if (mInputFilterEnabled) { 2471 mLock.unlock(); 2472 2473 MotionEvent event; 2474 event.initialize(deviceId, source, action, flags, edgeFlags, metaState, 0, 0, 2475 xPrecision, yPrecision, downTime, eventTime, 2476 pointerCount, pointerIds, pointerCoords); 2477 2478 policyFlags |= POLICY_FLAG_FILTERED; 2479 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2480 return; // event was consumed by the filter 2481 } 2482 2483 mLock.lock(); 2484 } 2485 2486 // Attempt batching and streaming of move events. 2487 if (action == AMOTION_EVENT_ACTION_MOVE 2488 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2489 // BATCHING CASE 2490 // 2491 // Try to append a move sample to the tail of the inbound queue for this device. 2492 // Give up if we encounter a non-move motion event for this device since that 2493 // means we cannot append any new samples until a new motion event has started. 2494 for (EventEntry* entry = mInboundQueue.tailSentinel.prev; 2495 entry != & mInboundQueue.headSentinel; entry = entry->prev) { 2496 if (entry->type != EventEntry::TYPE_MOTION) { 2497 // Keep looking for motion events. 2498 continue; 2499 } 2500 2501 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 2502 if (motionEntry->deviceId != deviceId 2503 || motionEntry->source != source) { 2504 // Keep looking for this device and source. 2505 continue; 2506 } 2507 2508 if (motionEntry->action != action 2509 || motionEntry->pointerCount != pointerCount 2510 || motionEntry->isInjected()) { 2511 // Last motion event in the queue for this device and source is 2512 // not compatible for appending new samples. Stop here. 2513 goto NoBatchingOrStreaming; 2514 } 2515 2516 // The last motion event is a move and is compatible for appending. 2517 // Do the batching magic. 2518 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2519#if DEBUG_BATCHING 2520 LOGD("Appended motion sample onto batch for most recent " 2521 "motion event for this device in the inbound queue."); 2522#endif 2523 mLock.unlock(); 2524 return; // done! 2525 } 2526 2527 // STREAMING CASE 2528 // 2529 // There is no pending motion event (of any kind) for this device in the inbound queue. 2530 // Search the outbound queue for the current foreground targets to find a dispatched 2531 // motion event that is still in progress. If found, then, appen the new sample to 2532 // that event and push it out to all current targets. The logic in 2533 // prepareDispatchCycleLocked takes care of the case where some targets may 2534 // already have consumed the motion event by starting a new dispatch cycle if needed. 2535 if (mCurrentInputTargetsValid) { 2536 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 2537 const InputTarget& inputTarget = mCurrentInputTargets[i]; 2538 if ((inputTarget.flags & InputTarget::FLAG_FOREGROUND) == 0) { 2539 // Skip non-foreground targets. We only want to stream if there is at 2540 // least one foreground target whose dispatch is still in progress. 2541 continue; 2542 } 2543 2544 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 2545 if (connectionIndex < 0) { 2546 // Connection must no longer be valid. 2547 continue; 2548 } 2549 2550 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 2551 if (connection->outboundQueue.isEmpty()) { 2552 // This foreground target has an empty outbound queue. 2553 continue; 2554 } 2555 2556 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2557 if (! dispatchEntry->inProgress 2558 || dispatchEntry->eventEntry->type != EventEntry::TYPE_MOTION 2559 || dispatchEntry->isSplit()) { 2560 // No motion event is being dispatched, or it is being split across 2561 // windows in which case we cannot stream. 2562 continue; 2563 } 2564 2565 MotionEntry* motionEntry = static_cast<MotionEntry*>( 2566 dispatchEntry->eventEntry); 2567 if (motionEntry->action != action 2568 || motionEntry->deviceId != deviceId 2569 || motionEntry->source != source 2570 || motionEntry->pointerCount != pointerCount 2571 || motionEntry->isInjected()) { 2572 // The motion event is not compatible with this move. 2573 continue; 2574 } 2575 2576 if (action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2577 if (!mLastHoverWindow) { 2578#if DEBUG_BATCHING 2579 LOGD("Not streaming hover move because there is no " 2580 "last hovered window."); 2581#endif 2582 goto NoBatchingOrStreaming; 2583 } 2584 2585 const InputWindow* hoverWindow = findTouchedWindowAtLocked( 2586 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X), 2587 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y)); 2588 if (mLastHoverWindow != hoverWindow) { 2589#if DEBUG_BATCHING 2590 LOGD("Not streaming hover move because the last hovered window " 2591 "is '%s' but the currently hovered window is '%s'.", 2592 mLastHoverWindow->name.string(), 2593 hoverWindow ? hoverWindow->name.string() : "<null>"); 2594#endif 2595 goto NoBatchingOrStreaming; 2596 } 2597 } 2598 2599 // Hurray! This foreground target is currently dispatching a move event 2600 // that we can stream onto. Append the motion sample and resume dispatch. 2601 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2602#if DEBUG_BATCHING 2603 LOGD("Appended motion sample onto batch for most recently dispatched " 2604 "motion event for this device in the outbound queues. " 2605 "Attempting to stream the motion sample."); 2606#endif 2607 nsecs_t currentTime = now(); 2608 dispatchEventToCurrentInputTargetsLocked(currentTime, motionEntry, 2609 true /*resumeWithAppendedMotionSample*/); 2610 2611 runCommandsLockedInterruptible(); 2612 mLock.unlock(); 2613 return; // done! 2614 } 2615 } 2616 2617NoBatchingOrStreaming:; 2618 } 2619 2620 // Just enqueue a new motion event. 2621 MotionEntry* newEntry = mAllocator.obtainMotionEntry(eventTime, 2622 deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2623 xPrecision, yPrecision, downTime, 2624 pointerCount, pointerIds, pointerCoords); 2625 2626 needWake = enqueueInboundEventLocked(newEntry); 2627 mLock.unlock(); 2628 } // release lock 2629 2630 if (needWake) { 2631 mLooper->wake(); 2632 } 2633} 2634 2635void InputDispatcher::notifySwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, 2636 uint32_t policyFlags) { 2637#if DEBUG_INBOUND_EVENT_DETAILS 2638 LOGD("notifySwitch - switchCode=%d, switchValue=%d, policyFlags=0x%x", 2639 switchCode, switchValue, policyFlags); 2640#endif 2641 2642 policyFlags |= POLICY_FLAG_TRUSTED; 2643 mPolicy->notifySwitch(when, switchCode, switchValue, policyFlags); 2644} 2645 2646int32_t InputDispatcher::injectInputEvent(const InputEvent* event, 2647 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis, 2648 uint32_t policyFlags) { 2649#if DEBUG_INBOUND_EVENT_DETAILS 2650 LOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2651 "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x", 2652 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags); 2653#endif 2654 2655 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2656 2657 policyFlags |= POLICY_FLAG_INJECTED; 2658 if (hasInjectionPermission(injectorPid, injectorUid)) { 2659 policyFlags |= POLICY_FLAG_TRUSTED; 2660 } 2661 2662 EventEntry* injectedEntry; 2663 switch (event->getType()) { 2664 case AINPUT_EVENT_TYPE_KEY: { 2665 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2666 int32_t action = keyEvent->getAction(); 2667 if (! validateKeyEvent(action)) { 2668 return INPUT_EVENT_INJECTION_FAILED; 2669 } 2670 2671 int32_t flags = keyEvent->getFlags(); 2672 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2673 policyFlags |= POLICY_FLAG_VIRTUAL; 2674 } 2675 2676 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2677 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2678 } 2679 2680 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2681 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2682 } 2683 2684 mLock.lock(); 2685 injectedEntry = mAllocator.obtainKeyEntry(keyEvent->getEventTime(), 2686 keyEvent->getDeviceId(), keyEvent->getSource(), 2687 policyFlags, action, flags, 2688 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2689 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2690 break; 2691 } 2692 2693 case AINPUT_EVENT_TYPE_MOTION: { 2694 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2695 int32_t action = motionEvent->getAction(); 2696 size_t pointerCount = motionEvent->getPointerCount(); 2697 const int32_t* pointerIds = motionEvent->getPointerIds(); 2698 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2699 return INPUT_EVENT_INJECTION_FAILED; 2700 } 2701 2702 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2703 nsecs_t eventTime = motionEvent->getEventTime(); 2704 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2705 } 2706 2707 mLock.lock(); 2708 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2709 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2710 MotionEntry* motionEntry = mAllocator.obtainMotionEntry(*sampleEventTimes, 2711 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2712 action, motionEvent->getFlags(), 2713 motionEvent->getMetaState(), motionEvent->getEdgeFlags(), 2714 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2715 motionEvent->getDownTime(), uint32_t(pointerCount), 2716 pointerIds, samplePointerCoords); 2717 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2718 sampleEventTimes += 1; 2719 samplePointerCoords += pointerCount; 2720 mAllocator.appendMotionSample(motionEntry, *sampleEventTimes, samplePointerCoords); 2721 } 2722 injectedEntry = motionEntry; 2723 break; 2724 } 2725 2726 default: 2727 LOGW("Cannot inject event of type %d", event->getType()); 2728 return INPUT_EVENT_INJECTION_FAILED; 2729 } 2730 2731 InjectionState* injectionState = mAllocator.obtainInjectionState(injectorPid, injectorUid); 2732 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2733 injectionState->injectionIsAsync = true; 2734 } 2735 2736 injectionState->refCount += 1; 2737 injectedEntry->injectionState = injectionState; 2738 2739 bool needWake = enqueueInboundEventLocked(injectedEntry); 2740 mLock.unlock(); 2741 2742 if (needWake) { 2743 mLooper->wake(); 2744 } 2745 2746 int32_t injectionResult; 2747 { // acquire lock 2748 AutoMutex _l(mLock); 2749 2750 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2751 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 2752 } else { 2753 for (;;) { 2754 injectionResult = injectionState->injectionResult; 2755 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 2756 break; 2757 } 2758 2759 nsecs_t remainingTimeout = endTime - now(); 2760 if (remainingTimeout <= 0) { 2761#if DEBUG_INJECTION 2762 LOGD("injectInputEvent - Timed out waiting for injection result " 2763 "to become available."); 2764#endif 2765 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2766 break; 2767 } 2768 2769 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 2770 } 2771 2772 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 2773 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 2774 while (injectionState->pendingForegroundDispatches != 0) { 2775#if DEBUG_INJECTION 2776 LOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 2777 injectionState->pendingForegroundDispatches); 2778#endif 2779 nsecs_t remainingTimeout = endTime - now(); 2780 if (remainingTimeout <= 0) { 2781#if DEBUG_INJECTION 2782 LOGD("injectInputEvent - Timed out waiting for pending foreground " 2783 "dispatches to finish."); 2784#endif 2785 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2786 break; 2787 } 2788 2789 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 2790 } 2791 } 2792 } 2793 2794 mAllocator.releaseInjectionState(injectionState); 2795 } // release lock 2796 2797#if DEBUG_INJECTION 2798 LOGD("injectInputEvent - Finished with result %d. " 2799 "injectorPid=%d, injectorUid=%d", 2800 injectionResult, injectorPid, injectorUid); 2801#endif 2802 2803 return injectionResult; 2804} 2805 2806bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 2807 return injectorUid == 0 2808 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 2809} 2810 2811void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 2812 InjectionState* injectionState = entry->injectionState; 2813 if (injectionState) { 2814#if DEBUG_INJECTION 2815 LOGD("Setting input event injection result to %d. " 2816 "injectorPid=%d, injectorUid=%d", 2817 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 2818#endif 2819 2820 if (injectionState->injectionIsAsync 2821 && !(entry->policyFlags & POLICY_FLAG_FILTERED)) { 2822 // Log the outcome since the injector did not wait for the injection result. 2823 switch (injectionResult) { 2824 case INPUT_EVENT_INJECTION_SUCCEEDED: 2825 LOGV("Asynchronous input event injection succeeded."); 2826 break; 2827 case INPUT_EVENT_INJECTION_FAILED: 2828 LOGW("Asynchronous input event injection failed."); 2829 break; 2830 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 2831 LOGW("Asynchronous input event injection permission denied."); 2832 break; 2833 case INPUT_EVENT_INJECTION_TIMED_OUT: 2834 LOGW("Asynchronous input event injection timed out."); 2835 break; 2836 } 2837 } 2838 2839 injectionState->injectionResult = injectionResult; 2840 mInjectionResultAvailableCondition.broadcast(); 2841 } 2842} 2843 2844void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2845 InjectionState* injectionState = entry->injectionState; 2846 if (injectionState) { 2847 injectionState->pendingForegroundDispatches += 1; 2848 } 2849} 2850 2851void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2852 InjectionState* injectionState = entry->injectionState; 2853 if (injectionState) { 2854 injectionState->pendingForegroundDispatches -= 1; 2855 2856 if (injectionState->pendingForegroundDispatches == 0) { 2857 mInjectionSyncFinishedCondition.broadcast(); 2858 } 2859 } 2860} 2861 2862const InputWindow* InputDispatcher::getWindowLocked(const sp<InputChannel>& inputChannel) { 2863 for (size_t i = 0; i < mWindows.size(); i++) { 2864 const InputWindow* window = & mWindows[i]; 2865 if (window->inputChannel == inputChannel) { 2866 return window; 2867 } 2868 } 2869 return NULL; 2870} 2871 2872void InputDispatcher::setInputWindows(const Vector<InputWindow>& inputWindows) { 2873#if DEBUG_FOCUS 2874 LOGD("setInputWindows"); 2875#endif 2876 { // acquire lock 2877 AutoMutex _l(mLock); 2878 2879 // Clear old window pointers. 2880 sp<InputChannel> oldFocusedWindowChannel; 2881 if (mFocusedWindow) { 2882 oldFocusedWindowChannel = mFocusedWindow->inputChannel; 2883 mFocusedWindow = NULL; 2884 } 2885 sp<InputChannel> oldLastHoverWindowChannel; 2886 if (mLastHoverWindow) { 2887 oldLastHoverWindowChannel = mLastHoverWindow->inputChannel; 2888 mLastHoverWindow = NULL; 2889 } 2890 2891 mWindows.clear(); 2892 2893 // Loop over new windows and rebuild the necessary window pointers for 2894 // tracking focus and touch. 2895 mWindows.appendVector(inputWindows); 2896 2897 size_t numWindows = mWindows.size(); 2898 for (size_t i = 0; i < numWindows; i++) { 2899 const InputWindow* window = & mWindows.itemAt(i); 2900 if (window->hasFocus) { 2901 mFocusedWindow = window; 2902 break; 2903 } 2904 } 2905 2906 if (oldFocusedWindowChannel != NULL) { 2907 if (!mFocusedWindow || oldFocusedWindowChannel != mFocusedWindow->inputChannel) { 2908#if DEBUG_FOCUS 2909 LOGD("Focus left window: %s", 2910 oldFocusedWindowChannel->getName().string()); 2911#endif 2912 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, 2913 "focus left window"); 2914 synthesizeCancelationEventsForInputChannelLocked(oldFocusedWindowChannel, options); 2915 oldFocusedWindowChannel.clear(); 2916 } 2917 } 2918 if (mFocusedWindow && oldFocusedWindowChannel == NULL) { 2919#if DEBUG_FOCUS 2920 LOGD("Focus entered window: %s", 2921 mFocusedWindow->inputChannel->getName().string()); 2922#endif 2923 } 2924 2925 for (size_t i = 0; i < mTouchState.windows.size(); ) { 2926 TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i); 2927 const InputWindow* window = getWindowLocked(touchedWindow.channel); 2928 if (window) { 2929 touchedWindow.window = window; 2930 i += 1; 2931 } else { 2932#if DEBUG_FOCUS 2933 LOGD("Touched window was removed: %s", touchedWindow.channel->getName().string()); 2934#endif 2935 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 2936 "touched window was removed"); 2937 synthesizeCancelationEventsForInputChannelLocked(touchedWindow.channel, options); 2938 mTouchState.windows.removeAt(i); 2939 } 2940 } 2941 2942 // Recover the last hovered window. 2943 if (oldLastHoverWindowChannel != NULL) { 2944 mLastHoverWindow = getWindowLocked(oldLastHoverWindowChannel); 2945 oldLastHoverWindowChannel.clear(); 2946 } 2947 2948#if DEBUG_FOCUS 2949 //logDispatchStateLocked(); 2950#endif 2951 } // release lock 2952 2953 // Wake up poll loop since it may need to make new input dispatching choices. 2954 mLooper->wake(); 2955} 2956 2957void InputDispatcher::setFocusedApplication(const InputApplication* inputApplication) { 2958#if DEBUG_FOCUS 2959 LOGD("setFocusedApplication"); 2960#endif 2961 { // acquire lock 2962 AutoMutex _l(mLock); 2963 2964 releaseFocusedApplicationLocked(); 2965 2966 if (inputApplication) { 2967 mFocusedApplicationStorage = *inputApplication; 2968 mFocusedApplication = & mFocusedApplicationStorage; 2969 } 2970 2971#if DEBUG_FOCUS 2972 //logDispatchStateLocked(); 2973#endif 2974 } // release lock 2975 2976 // Wake up poll loop since it may need to make new input dispatching choices. 2977 mLooper->wake(); 2978} 2979 2980void InputDispatcher::releaseFocusedApplicationLocked() { 2981 if (mFocusedApplication) { 2982 mFocusedApplication = NULL; 2983 mFocusedApplicationStorage.inputApplicationHandle.clear(); 2984 } 2985} 2986 2987void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 2988#if DEBUG_FOCUS 2989 LOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 2990#endif 2991 2992 bool changed; 2993 { // acquire lock 2994 AutoMutex _l(mLock); 2995 2996 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 2997 if (mDispatchFrozen && !frozen) { 2998 resetANRTimeoutsLocked(); 2999 } 3000 3001 if (mDispatchEnabled && !enabled) { 3002 resetAndDropEverythingLocked("dispatcher is being disabled"); 3003 } 3004 3005 mDispatchEnabled = enabled; 3006 mDispatchFrozen = frozen; 3007 changed = true; 3008 } else { 3009 changed = false; 3010 } 3011 3012#if DEBUG_FOCUS 3013 //logDispatchStateLocked(); 3014#endif 3015 } // release lock 3016 3017 if (changed) { 3018 // Wake up poll loop since it may need to make new input dispatching choices. 3019 mLooper->wake(); 3020 } 3021} 3022 3023void InputDispatcher::setInputFilterEnabled(bool enabled) { 3024#if DEBUG_FOCUS 3025 LOGD("setInputFilterEnabled: enabled=%d", enabled); 3026#endif 3027 3028 { // acquire lock 3029 AutoMutex _l(mLock); 3030 3031 if (mInputFilterEnabled == enabled) { 3032 return; 3033 } 3034 3035 mInputFilterEnabled = enabled; 3036 resetAndDropEverythingLocked("input filter is being enabled or disabled"); 3037 } // release lock 3038 3039 // Wake up poll loop since there might be work to do to drop everything. 3040 mLooper->wake(); 3041} 3042 3043bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 3044 const sp<InputChannel>& toChannel) { 3045#if DEBUG_FOCUS 3046 LOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 3047 fromChannel->getName().string(), toChannel->getName().string()); 3048#endif 3049 { // acquire lock 3050 AutoMutex _l(mLock); 3051 3052 const InputWindow* fromWindow = getWindowLocked(fromChannel); 3053 const InputWindow* toWindow = getWindowLocked(toChannel); 3054 if (! fromWindow || ! toWindow) { 3055#if DEBUG_FOCUS 3056 LOGD("Cannot transfer focus because from or to window not found."); 3057#endif 3058 return false; 3059 } 3060 if (fromWindow == toWindow) { 3061#if DEBUG_FOCUS 3062 LOGD("Trivial transfer to same window."); 3063#endif 3064 return true; 3065 } 3066 3067 bool found = false; 3068 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3069 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3070 if (touchedWindow.window == fromWindow) { 3071 int32_t oldTargetFlags = touchedWindow.targetFlags; 3072 BitSet32 pointerIds = touchedWindow.pointerIds; 3073 3074 mTouchState.windows.removeAt(i); 3075 3076 int32_t newTargetFlags = oldTargetFlags 3077 & (InputTarget::FLAG_FOREGROUND 3078 | InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS); 3079 mTouchState.addOrUpdateWindow(toWindow, newTargetFlags, pointerIds); 3080 3081 found = true; 3082 break; 3083 } 3084 } 3085 3086 if (! found) { 3087#if DEBUG_FOCUS 3088 LOGD("Focus transfer failed because from window did not have focus."); 3089#endif 3090 return false; 3091 } 3092 3093 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 3094 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 3095 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 3096 sp<Connection> fromConnection = mConnectionsByReceiveFd.valueAt(fromConnectionIndex); 3097 sp<Connection> toConnection = mConnectionsByReceiveFd.valueAt(toConnectionIndex); 3098 3099 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 3100 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 3101 "transferring touch focus from this window to another window"); 3102 synthesizeCancelationEventsForConnectionLocked(fromConnection, options); 3103 } 3104 3105#if DEBUG_FOCUS 3106 logDispatchStateLocked(); 3107#endif 3108 } // release lock 3109 3110 // Wake up poll loop since it may need to make new input dispatching choices. 3111 mLooper->wake(); 3112 return true; 3113} 3114 3115void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 3116#if DEBUG_FOCUS 3117 LOGD("Resetting and dropping all events (%s).", reason); 3118#endif 3119 3120 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason); 3121 synthesizeCancelationEventsForAllConnectionsLocked(options); 3122 3123 resetKeyRepeatLocked(); 3124 releasePendingEventLocked(); 3125 drainInboundQueueLocked(); 3126 resetTargetsLocked(); 3127 3128 mTouchState.reset(); 3129} 3130 3131void InputDispatcher::logDispatchStateLocked() { 3132 String8 dump; 3133 dumpDispatchStateLocked(dump); 3134 3135 char* text = dump.lockBuffer(dump.size()); 3136 char* start = text; 3137 while (*start != '\0') { 3138 char* end = strchr(start, '\n'); 3139 if (*end == '\n') { 3140 *(end++) = '\0'; 3141 } 3142 LOGD("%s", start); 3143 start = end; 3144 } 3145} 3146 3147void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 3148 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 3149 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 3150 3151 if (mFocusedApplication) { 3152 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 3153 mFocusedApplication->name.string(), 3154 mFocusedApplication->dispatchingTimeout / 1000000.0); 3155 } else { 3156 dump.append(INDENT "FocusedApplication: <null>\n"); 3157 } 3158 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 3159 mFocusedWindow != NULL ? mFocusedWindow->name.string() : "<null>"); 3160 3161 dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down)); 3162 dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split)); 3163 dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId); 3164 dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source); 3165 if (!mTouchState.windows.isEmpty()) { 3166 dump.append(INDENT "TouchedWindows:\n"); 3167 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3168 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3169 dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 3170 i, touchedWindow.window->name.string(), touchedWindow.pointerIds.value, 3171 touchedWindow.targetFlags); 3172 } 3173 } else { 3174 dump.append(INDENT "TouchedWindows: <none>\n"); 3175 } 3176 3177 if (!mWindows.isEmpty()) { 3178 dump.append(INDENT "Windows:\n"); 3179 for (size_t i = 0; i < mWindows.size(); i++) { 3180 const InputWindow& window = mWindows[i]; 3181 dump.appendFormat(INDENT2 "%d: name='%s', paused=%s, hasFocus=%s, hasWallpaper=%s, " 3182 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 3183 "frame=[%d,%d][%d,%d], " 3184 "touchableRegion=", 3185 i, window.name.string(), 3186 toString(window.paused), 3187 toString(window.hasFocus), 3188 toString(window.hasWallpaper), 3189 toString(window.visible), 3190 toString(window.canReceiveKeys), 3191 window.layoutParamsFlags, window.layoutParamsType, 3192 window.layer, 3193 window.frameLeft, window.frameTop, 3194 window.frameRight, window.frameBottom); 3195 dumpRegion(dump, window.touchableRegion); 3196 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 3197 window.ownerPid, window.ownerUid, 3198 window.dispatchingTimeout / 1000000.0); 3199 } 3200 } else { 3201 dump.append(INDENT "Windows: <none>\n"); 3202 } 3203 3204 if (!mMonitoringChannels.isEmpty()) { 3205 dump.append(INDENT "MonitoringChannels:\n"); 3206 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3207 const sp<InputChannel>& channel = mMonitoringChannels[i]; 3208 dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string()); 3209 } 3210 } else { 3211 dump.append(INDENT "MonitoringChannels: <none>\n"); 3212 } 3213 3214 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 3215 3216 if (!mActiveConnections.isEmpty()) { 3217 dump.append(INDENT "ActiveConnections:\n"); 3218 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3219 const Connection* connection = mActiveConnections[i]; 3220 dump.appendFormat(INDENT2 "%d: '%s', status=%s, outboundQueueLength=%u, " 3221 "inputState.isNeutral=%s\n", 3222 i, connection->getInputChannelName(), connection->getStatusLabel(), 3223 connection->outboundQueue.count(), 3224 toString(connection->inputState.isNeutral())); 3225 } 3226 } else { 3227 dump.append(INDENT "ActiveConnections: <none>\n"); 3228 } 3229 3230 if (isAppSwitchPendingLocked()) { 3231 dump.appendFormat(INDENT "AppSwitch: pending, due in %01.1fms\n", 3232 (mAppSwitchDueTime - now()) / 1000000.0); 3233 } else { 3234 dump.append(INDENT "AppSwitch: not pending\n"); 3235 } 3236} 3237 3238status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 3239 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3240#if DEBUG_REGISTRATION 3241 LOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3242 toString(monitor)); 3243#endif 3244 3245 { // acquire lock 3246 AutoMutex _l(mLock); 3247 3248 if (getConnectionIndexLocked(inputChannel) >= 0) { 3249 LOGW("Attempted to register already registered input channel '%s'", 3250 inputChannel->getName().string()); 3251 return BAD_VALUE; 3252 } 3253 3254 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle); 3255 status_t status = connection->initialize(); 3256 if (status) { 3257 LOGE("Failed to initialize input publisher for input channel '%s', status=%d", 3258 inputChannel->getName().string(), status); 3259 return status; 3260 } 3261 3262 int32_t receiveFd = inputChannel->getReceivePipeFd(); 3263 mConnectionsByReceiveFd.add(receiveFd, connection); 3264 3265 if (monitor) { 3266 mMonitoringChannels.push(inputChannel); 3267 } 3268 3269 mLooper->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3270 3271 runCommandsLockedInterruptible(); 3272 } // release lock 3273 return OK; 3274} 3275 3276status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3277#if DEBUG_REGISTRATION 3278 LOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3279#endif 3280 3281 { // acquire lock 3282 AutoMutex _l(mLock); 3283 3284 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3285 if (connectionIndex < 0) { 3286 LOGW("Attempted to unregister already unregistered input channel '%s'", 3287 inputChannel->getName().string()); 3288 return BAD_VALUE; 3289 } 3290 3291 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3292 mConnectionsByReceiveFd.removeItemsAt(connectionIndex); 3293 3294 connection->status = Connection::STATUS_ZOMBIE; 3295 3296 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3297 if (mMonitoringChannels[i] == inputChannel) { 3298 mMonitoringChannels.removeAt(i); 3299 break; 3300 } 3301 } 3302 3303 mLooper->removeFd(inputChannel->getReceivePipeFd()); 3304 3305 nsecs_t currentTime = now(); 3306 abortBrokenDispatchCycleLocked(currentTime, connection); 3307 3308 runCommandsLockedInterruptible(); 3309 } // release lock 3310 3311 // Wake the poll loop because removing the connection may have changed the current 3312 // synchronization state. 3313 mLooper->wake(); 3314 return OK; 3315} 3316 3317ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3318 ssize_t connectionIndex = mConnectionsByReceiveFd.indexOfKey(inputChannel->getReceivePipeFd()); 3319 if (connectionIndex >= 0) { 3320 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3321 if (connection->inputChannel.get() == inputChannel.get()) { 3322 return connectionIndex; 3323 } 3324 } 3325 3326 return -1; 3327} 3328 3329void InputDispatcher::activateConnectionLocked(Connection* connection) { 3330 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3331 if (mActiveConnections.itemAt(i) == connection) { 3332 return; 3333 } 3334 } 3335 mActiveConnections.add(connection); 3336} 3337 3338void InputDispatcher::deactivateConnectionLocked(Connection* connection) { 3339 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3340 if (mActiveConnections.itemAt(i) == connection) { 3341 mActiveConnections.removeAt(i); 3342 return; 3343 } 3344 } 3345} 3346 3347void InputDispatcher::onDispatchCycleStartedLocked( 3348 nsecs_t currentTime, const sp<Connection>& connection) { 3349} 3350 3351void InputDispatcher::onDispatchCycleFinishedLocked( 3352 nsecs_t currentTime, const sp<Connection>& connection, bool handled) { 3353 CommandEntry* commandEntry = postCommandLocked( 3354 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3355 commandEntry->connection = connection; 3356 commandEntry->handled = handled; 3357} 3358 3359void InputDispatcher::onDispatchCycleBrokenLocked( 3360 nsecs_t currentTime, const sp<Connection>& connection) { 3361 LOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3362 connection->getInputChannelName()); 3363 3364 CommandEntry* commandEntry = postCommandLocked( 3365 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3366 commandEntry->connection = connection; 3367} 3368 3369void InputDispatcher::onANRLocked( 3370 nsecs_t currentTime, const InputApplication* application, const InputWindow* window, 3371 nsecs_t eventTime, nsecs_t waitStartTime) { 3372 LOGI("Application is not responding: %s. " 3373 "%01.1fms since event, %01.1fms since wait started", 3374 getApplicationWindowLabelLocked(application, window).string(), 3375 (currentTime - eventTime) / 1000000.0, 3376 (currentTime - waitStartTime) / 1000000.0); 3377 3378 CommandEntry* commandEntry = postCommandLocked( 3379 & InputDispatcher::doNotifyANRLockedInterruptible); 3380 if (application) { 3381 commandEntry->inputApplicationHandle = application->inputApplicationHandle; 3382 } 3383 if (window) { 3384 commandEntry->inputWindowHandle = window->inputWindowHandle; 3385 commandEntry->inputChannel = window->inputChannel; 3386 } 3387} 3388 3389void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3390 CommandEntry* commandEntry) { 3391 mLock.unlock(); 3392 3393 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3394 3395 mLock.lock(); 3396} 3397 3398void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3399 CommandEntry* commandEntry) { 3400 sp<Connection> connection = commandEntry->connection; 3401 3402 if (connection->status != Connection::STATUS_ZOMBIE) { 3403 mLock.unlock(); 3404 3405 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3406 3407 mLock.lock(); 3408 } 3409} 3410 3411void InputDispatcher::doNotifyANRLockedInterruptible( 3412 CommandEntry* commandEntry) { 3413 mLock.unlock(); 3414 3415 nsecs_t newTimeout = mPolicy->notifyANR( 3416 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle); 3417 3418 mLock.lock(); 3419 3420 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel); 3421} 3422 3423void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3424 CommandEntry* commandEntry) { 3425 KeyEntry* entry = commandEntry->keyEntry; 3426 3427 KeyEvent event; 3428 initializeKeyEvent(&event, entry); 3429 3430 mLock.unlock(); 3431 3432 bool consumed = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3433 &event, entry->policyFlags); 3434 3435 mLock.lock(); 3436 3437 entry->interceptKeyResult = consumed 3438 ? KeyEntry::INTERCEPT_KEY_RESULT_SKIP 3439 : KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3440 mAllocator.releaseKeyEntry(entry); 3441} 3442 3443void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3444 CommandEntry* commandEntry) { 3445 sp<Connection> connection = commandEntry->connection; 3446 bool handled = commandEntry->handled; 3447 3448 if (!connection->outboundQueue.isEmpty()) { 3449 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 3450 if (dispatchEntry->inProgress 3451 && dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3452 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3453 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3454 // Get the fallback key state. 3455 // Clear it out after dispatching the UP. 3456 int32_t originalKeyCode = keyEntry->keyCode; 3457 int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode); 3458 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3459 connection->inputState.removeFallbackKey(originalKeyCode); 3460 } 3461 3462 if (handled || !dispatchEntry->hasForegroundTarget()) { 3463 // If the application handles the original key for which we previously 3464 // generated a fallback or if the window is not a foreground window, 3465 // then cancel the associated fallback key, if any. 3466 if (fallbackKeyCode != -1) { 3467 if (fallbackKeyCode != AKEYCODE_UNKNOWN) { 3468 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3469 "application handled the original non-fallback key " 3470 "or is no longer a foreground target, " 3471 "canceling previously dispatched fallback key"); 3472 options.keyCode = fallbackKeyCode; 3473 synthesizeCancelationEventsForConnectionLocked(connection, options); 3474 } 3475 connection->inputState.removeFallbackKey(originalKeyCode); 3476 } 3477 } else { 3478 // If the application did not handle a non-fallback key, first check 3479 // that we are in a good state to perform unhandled key event processing 3480 // Then ask the policy what to do with it. 3481 bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN 3482 && keyEntry->repeatCount == 0; 3483 if (fallbackKeyCode == -1 && !initialDown) { 3484#if DEBUG_OUTBOUND_EVENT_DETAILS 3485 LOGD("Unhandled key event: Skipping unhandled key event processing " 3486 "since this is not an initial down. " 3487 "keyCode=%d, action=%d, repeatCount=%d", 3488 originalKeyCode, keyEntry->action, keyEntry->repeatCount); 3489#endif 3490 goto SkipFallback; 3491 } 3492 3493 // Dispatch the unhandled key to the policy. 3494#if DEBUG_OUTBOUND_EVENT_DETAILS 3495 LOGD("Unhandled key event: Asking policy to perform fallback action. " 3496 "keyCode=%d, action=%d, repeatCount=%d", 3497 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3498#endif 3499 KeyEvent event; 3500 initializeKeyEvent(&event, keyEntry); 3501 3502 mLock.unlock(); 3503 3504 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3505 &event, keyEntry->policyFlags, &event); 3506 3507 mLock.lock(); 3508 3509 if (connection->status != Connection::STATUS_NORMAL) { 3510 connection->inputState.removeFallbackKey(originalKeyCode); 3511 return; 3512 } 3513 3514 LOG_ASSERT(connection->outboundQueue.headSentinel.next == dispatchEntry); 3515 3516 // Latch the fallback keycode for this key on an initial down. 3517 // The fallback keycode cannot change at any other point in the lifecycle. 3518 if (initialDown) { 3519 if (fallback) { 3520 fallbackKeyCode = event.getKeyCode(); 3521 } else { 3522 fallbackKeyCode = AKEYCODE_UNKNOWN; 3523 } 3524 connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode); 3525 } 3526 3527 LOG_ASSERT(fallbackKeyCode != -1); 3528 3529 // Cancel the fallback key if the policy decides not to send it anymore. 3530 // We will continue to dispatch the key to the policy but we will no 3531 // longer dispatch a fallback key to the application. 3532 if (fallbackKeyCode != AKEYCODE_UNKNOWN 3533 && (!fallback || fallbackKeyCode != event.getKeyCode())) { 3534#if DEBUG_OUTBOUND_EVENT_DETAILS 3535 if (fallback) { 3536 LOGD("Unhandled key event: Policy requested to send key %d" 3537 "as a fallback for %d, but on the DOWN it had requested " 3538 "to send %d instead. Fallback canceled.", 3539 event.getKeyCode(), originalKeyCode, fallbackKeyCode); 3540 } else { 3541 LOGD("Unhandled key event: Policy did not request fallback for %d," 3542 "but on the DOWN it had requested to send %d. " 3543 "Fallback canceled.", 3544 originalKeyCode, fallbackKeyCode); 3545 } 3546#endif 3547 3548 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3549 "canceling fallback, policy no longer desires it"); 3550 options.keyCode = fallbackKeyCode; 3551 synthesizeCancelationEventsForConnectionLocked(connection, options); 3552 3553 fallback = false; 3554 fallbackKeyCode = AKEYCODE_UNKNOWN; 3555 if (keyEntry->action != AKEY_EVENT_ACTION_UP) { 3556 connection->inputState.setFallbackKey(originalKeyCode, 3557 fallbackKeyCode); 3558 } 3559 } 3560 3561#if DEBUG_OUTBOUND_EVENT_DETAILS 3562 { 3563 String8 msg; 3564 const KeyedVector<int32_t, int32_t>& fallbackKeys = 3565 connection->inputState.getFallbackKeys(); 3566 for (size_t i = 0; i < fallbackKeys.size(); i++) { 3567 msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i), 3568 fallbackKeys.valueAt(i)); 3569 } 3570 LOGD("Unhandled key event: %d currently tracked fallback keys%s.", 3571 fallbackKeys.size(), msg.string()); 3572 } 3573#endif 3574 3575 if (fallback) { 3576 // Restart the dispatch cycle using the fallback key. 3577 keyEntry->eventTime = event.getEventTime(); 3578 keyEntry->deviceId = event.getDeviceId(); 3579 keyEntry->source = event.getSource(); 3580 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3581 keyEntry->keyCode = fallbackKeyCode; 3582 keyEntry->scanCode = event.getScanCode(); 3583 keyEntry->metaState = event.getMetaState(); 3584 keyEntry->repeatCount = event.getRepeatCount(); 3585 keyEntry->downTime = event.getDownTime(); 3586 keyEntry->syntheticRepeat = false; 3587 3588#if DEBUG_OUTBOUND_EVENT_DETAILS 3589 LOGD("Unhandled key event: Dispatching fallback key. " 3590 "originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x", 3591 originalKeyCode, fallbackKeyCode, keyEntry->metaState); 3592#endif 3593 3594 dispatchEntry->inProgress = false; 3595 startDispatchCycleLocked(now(), connection); 3596 return; 3597 } else { 3598#if DEBUG_OUTBOUND_EVENT_DETAILS 3599 LOGD("Unhandled key event: No fallback key."); 3600#endif 3601 } 3602 } 3603 } 3604 } 3605 } 3606 3607SkipFallback: 3608 startNextDispatchCycleLocked(now(), connection); 3609} 3610 3611void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3612 mLock.unlock(); 3613 3614 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3615 3616 mLock.lock(); 3617} 3618 3619void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3620 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3621 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3622 entry->downTime, entry->eventTime); 3623} 3624 3625void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3626 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3627 // TODO Write some statistics about how long we spend waiting. 3628} 3629 3630void InputDispatcher::dump(String8& dump) { 3631 dump.append("Input Dispatcher State:\n"); 3632 dumpDispatchStateLocked(dump); 3633} 3634 3635 3636// --- InputDispatcher::Queue --- 3637 3638template <typename T> 3639uint32_t InputDispatcher::Queue<T>::count() const { 3640 uint32_t result = 0; 3641 for (const T* entry = headSentinel.next; entry != & tailSentinel; entry = entry->next) { 3642 result += 1; 3643 } 3644 return result; 3645} 3646 3647 3648// --- InputDispatcher::Allocator --- 3649 3650InputDispatcher::Allocator::Allocator() { 3651} 3652 3653InputDispatcher::InjectionState* 3654InputDispatcher::Allocator::obtainInjectionState(int32_t injectorPid, int32_t injectorUid) { 3655 InjectionState* injectionState = mInjectionStatePool.alloc(); 3656 injectionState->refCount = 1; 3657 injectionState->injectorPid = injectorPid; 3658 injectionState->injectorUid = injectorUid; 3659 injectionState->injectionIsAsync = false; 3660 injectionState->injectionResult = INPUT_EVENT_INJECTION_PENDING; 3661 injectionState->pendingForegroundDispatches = 0; 3662 return injectionState; 3663} 3664 3665void InputDispatcher::Allocator::initializeEventEntry(EventEntry* entry, int32_t type, 3666 nsecs_t eventTime, uint32_t policyFlags) { 3667 entry->type = type; 3668 entry->refCount = 1; 3669 entry->dispatchInProgress = false; 3670 entry->eventTime = eventTime; 3671 entry->policyFlags = policyFlags; 3672 entry->injectionState = NULL; 3673} 3674 3675void InputDispatcher::Allocator::releaseEventEntryInjectionState(EventEntry* entry) { 3676 if (entry->injectionState) { 3677 releaseInjectionState(entry->injectionState); 3678 entry->injectionState = NULL; 3679 } 3680} 3681 3682InputDispatcher::ConfigurationChangedEntry* 3683InputDispatcher::Allocator::obtainConfigurationChangedEntry(nsecs_t eventTime) { 3684 ConfigurationChangedEntry* entry = mConfigurationChangeEntryPool.alloc(); 3685 initializeEventEntry(entry, EventEntry::TYPE_CONFIGURATION_CHANGED, eventTime, 0); 3686 return entry; 3687} 3688 3689InputDispatcher::KeyEntry* InputDispatcher::Allocator::obtainKeyEntry(nsecs_t eventTime, 3690 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3691 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3692 int32_t repeatCount, nsecs_t downTime) { 3693 KeyEntry* entry = mKeyEntryPool.alloc(); 3694 initializeEventEntry(entry, EventEntry::TYPE_KEY, eventTime, policyFlags); 3695 3696 entry->deviceId = deviceId; 3697 entry->source = source; 3698 entry->action = action; 3699 entry->flags = flags; 3700 entry->keyCode = keyCode; 3701 entry->scanCode = scanCode; 3702 entry->metaState = metaState; 3703 entry->repeatCount = repeatCount; 3704 entry->downTime = downTime; 3705 entry->syntheticRepeat = false; 3706 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3707 return entry; 3708} 3709 3710InputDispatcher::MotionEntry* InputDispatcher::Allocator::obtainMotionEntry(nsecs_t eventTime, 3711 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 3712 int32_t metaState, int32_t edgeFlags, float xPrecision, float yPrecision, 3713 nsecs_t downTime, uint32_t pointerCount, 3714 const int32_t* pointerIds, const PointerCoords* pointerCoords) { 3715 MotionEntry* entry = mMotionEntryPool.alloc(); 3716 initializeEventEntry(entry, EventEntry::TYPE_MOTION, eventTime, policyFlags); 3717 3718 entry->eventTime = eventTime; 3719 entry->deviceId = deviceId; 3720 entry->source = source; 3721 entry->action = action; 3722 entry->flags = flags; 3723 entry->metaState = metaState; 3724 entry->edgeFlags = edgeFlags; 3725 entry->xPrecision = xPrecision; 3726 entry->yPrecision = yPrecision; 3727 entry->downTime = downTime; 3728 entry->pointerCount = pointerCount; 3729 entry->firstSample.eventTime = eventTime; 3730 entry->firstSample.next = NULL; 3731 entry->lastSample = & entry->firstSample; 3732 for (uint32_t i = 0; i < pointerCount; i++) { 3733 entry->pointerIds[i] = pointerIds[i]; 3734 entry->firstSample.pointerCoords[i].copyFrom(pointerCoords[i]); 3735 } 3736 return entry; 3737} 3738 3739InputDispatcher::DispatchEntry* InputDispatcher::Allocator::obtainDispatchEntry( 3740 EventEntry* eventEntry, 3741 int32_t targetFlags, float xOffset, float yOffset) { 3742 DispatchEntry* entry = mDispatchEntryPool.alloc(); 3743 entry->eventEntry = eventEntry; 3744 eventEntry->refCount += 1; 3745 entry->targetFlags = targetFlags; 3746 entry->xOffset = xOffset; 3747 entry->yOffset = yOffset; 3748 entry->inProgress = false; 3749 entry->headMotionSample = NULL; 3750 entry->tailMotionSample = NULL; 3751 return entry; 3752} 3753 3754InputDispatcher::CommandEntry* InputDispatcher::Allocator::obtainCommandEntry(Command command) { 3755 CommandEntry* entry = mCommandEntryPool.alloc(); 3756 entry->command = command; 3757 return entry; 3758} 3759 3760void InputDispatcher::Allocator::releaseInjectionState(InjectionState* injectionState) { 3761 injectionState->refCount -= 1; 3762 if (injectionState->refCount == 0) { 3763 mInjectionStatePool.free(injectionState); 3764 } else { 3765 LOG_ASSERT(injectionState->refCount > 0); 3766 } 3767} 3768 3769void InputDispatcher::Allocator::releaseEventEntry(EventEntry* entry) { 3770 switch (entry->type) { 3771 case EventEntry::TYPE_CONFIGURATION_CHANGED: 3772 releaseConfigurationChangedEntry(static_cast<ConfigurationChangedEntry*>(entry)); 3773 break; 3774 case EventEntry::TYPE_KEY: 3775 releaseKeyEntry(static_cast<KeyEntry*>(entry)); 3776 break; 3777 case EventEntry::TYPE_MOTION: 3778 releaseMotionEntry(static_cast<MotionEntry*>(entry)); 3779 break; 3780 default: 3781 LOG_ASSERT(false); 3782 break; 3783 } 3784} 3785 3786void InputDispatcher::Allocator::releaseConfigurationChangedEntry( 3787 ConfigurationChangedEntry* entry) { 3788 entry->refCount -= 1; 3789 if (entry->refCount == 0) { 3790 releaseEventEntryInjectionState(entry); 3791 mConfigurationChangeEntryPool.free(entry); 3792 } else { 3793 LOG_ASSERT(entry->refCount > 0); 3794 } 3795} 3796 3797void InputDispatcher::Allocator::releaseKeyEntry(KeyEntry* entry) { 3798 entry->refCount -= 1; 3799 if (entry->refCount == 0) { 3800 releaseEventEntryInjectionState(entry); 3801 mKeyEntryPool.free(entry); 3802 } else { 3803 LOG_ASSERT(entry->refCount > 0); 3804 } 3805} 3806 3807void InputDispatcher::Allocator::releaseMotionEntry(MotionEntry* entry) { 3808 entry->refCount -= 1; 3809 if (entry->refCount == 0) { 3810 releaseEventEntryInjectionState(entry); 3811 for (MotionSample* sample = entry->firstSample.next; sample != NULL; ) { 3812 MotionSample* next = sample->next; 3813 mMotionSamplePool.free(sample); 3814 sample = next; 3815 } 3816 mMotionEntryPool.free(entry); 3817 } else { 3818 LOG_ASSERT(entry->refCount > 0); 3819 } 3820} 3821 3822void InputDispatcher::Allocator::freeMotionSample(MotionSample* sample) { 3823 mMotionSamplePool.free(sample); 3824} 3825 3826void InputDispatcher::Allocator::releaseDispatchEntry(DispatchEntry* entry) { 3827 releaseEventEntry(entry->eventEntry); 3828 mDispatchEntryPool.free(entry); 3829} 3830 3831void InputDispatcher::Allocator::releaseCommandEntry(CommandEntry* entry) { 3832 mCommandEntryPool.free(entry); 3833} 3834 3835void InputDispatcher::Allocator::appendMotionSample(MotionEntry* motionEntry, 3836 nsecs_t eventTime, const PointerCoords* pointerCoords) { 3837 MotionSample* sample = mMotionSamplePool.alloc(); 3838 sample->eventTime = eventTime; 3839 uint32_t pointerCount = motionEntry->pointerCount; 3840 for (uint32_t i = 0; i < pointerCount; i++) { 3841 sample->pointerCoords[i].copyFrom(pointerCoords[i]); 3842 } 3843 3844 sample->next = NULL; 3845 motionEntry->lastSample->next = sample; 3846 motionEntry->lastSample = sample; 3847} 3848 3849void InputDispatcher::Allocator::recycleKeyEntry(KeyEntry* keyEntry) { 3850 releaseEventEntryInjectionState(keyEntry); 3851 3852 keyEntry->dispatchInProgress = false; 3853 keyEntry->syntheticRepeat = false; 3854 keyEntry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3855} 3856 3857 3858// --- InputDispatcher::MotionEntry --- 3859 3860uint32_t InputDispatcher::MotionEntry::countSamples() const { 3861 uint32_t count = 1; 3862 for (MotionSample* sample = firstSample.next; sample != NULL; sample = sample->next) { 3863 count += 1; 3864 } 3865 return count; 3866} 3867 3868 3869// --- InputDispatcher::InputState --- 3870 3871InputDispatcher::InputState::InputState() { 3872} 3873 3874InputDispatcher::InputState::~InputState() { 3875} 3876 3877bool InputDispatcher::InputState::isNeutral() const { 3878 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 3879} 3880 3881void InputDispatcher::InputState::trackEvent(const EventEntry* entry, int32_t action) { 3882 switch (entry->type) { 3883 case EventEntry::TYPE_KEY: 3884 trackKey(static_cast<const KeyEntry*>(entry), action); 3885 break; 3886 3887 case EventEntry::TYPE_MOTION: 3888 trackMotion(static_cast<const MotionEntry*>(entry), action); 3889 break; 3890 } 3891} 3892 3893void InputDispatcher::InputState::trackKey(const KeyEntry* entry, int32_t action) { 3894 if (action == AKEY_EVENT_ACTION_UP 3895 && (entry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3896 for (size_t i = 0; i < mFallbackKeys.size(); ) { 3897 if (mFallbackKeys.valueAt(i) == entry->keyCode) { 3898 mFallbackKeys.removeItemsAt(i); 3899 } else { 3900 i += 1; 3901 } 3902 } 3903 } 3904 3905 for (size_t i = 0; i < mKeyMementos.size(); i++) { 3906 KeyMemento& memento = mKeyMementos.editItemAt(i); 3907 if (memento.deviceId == entry->deviceId 3908 && memento.source == entry->source 3909 && memento.keyCode == entry->keyCode 3910 && memento.scanCode == entry->scanCode) { 3911 switch (action) { 3912 case AKEY_EVENT_ACTION_UP: 3913 mKeyMementos.removeAt(i); 3914 return; 3915 3916 case AKEY_EVENT_ACTION_DOWN: 3917 mKeyMementos.removeAt(i); 3918 goto Found; 3919 3920 default: 3921 return; 3922 } 3923 } 3924 } 3925 3926Found: 3927 if (action == AKEY_EVENT_ACTION_DOWN) { 3928 mKeyMementos.push(); 3929 KeyMemento& memento = mKeyMementos.editTop(); 3930 memento.deviceId = entry->deviceId; 3931 memento.source = entry->source; 3932 memento.keyCode = entry->keyCode; 3933 memento.scanCode = entry->scanCode; 3934 memento.flags = entry->flags; 3935 memento.downTime = entry->downTime; 3936 } 3937} 3938 3939void InputDispatcher::InputState::trackMotion(const MotionEntry* entry, int32_t action) { 3940 int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK; 3941 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3942 MotionMemento& memento = mMotionMementos.editItemAt(i); 3943 if (memento.deviceId == entry->deviceId 3944 && memento.source == entry->source) { 3945 switch (actionMasked) { 3946 case AMOTION_EVENT_ACTION_UP: 3947 case AMOTION_EVENT_ACTION_CANCEL: 3948 case AMOTION_EVENT_ACTION_HOVER_ENTER: 3949 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3950 case AMOTION_EVENT_ACTION_HOVER_EXIT: 3951 mMotionMementos.removeAt(i); 3952 return; 3953 3954 case AMOTION_EVENT_ACTION_DOWN: 3955 mMotionMementos.removeAt(i); 3956 goto Found; 3957 3958 case AMOTION_EVENT_ACTION_POINTER_UP: 3959 case AMOTION_EVENT_ACTION_POINTER_DOWN: 3960 case AMOTION_EVENT_ACTION_MOVE: 3961 memento.setPointers(entry); 3962 return; 3963 3964 default: 3965 return; 3966 } 3967 } 3968 } 3969 3970Found: 3971 switch (actionMasked) { 3972 case AMOTION_EVENT_ACTION_DOWN: 3973 case AMOTION_EVENT_ACTION_HOVER_ENTER: 3974 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3975 case AMOTION_EVENT_ACTION_HOVER_EXIT: 3976 mMotionMementos.push(); 3977 MotionMemento& memento = mMotionMementos.editTop(); 3978 memento.deviceId = entry->deviceId; 3979 memento.source = entry->source; 3980 memento.xPrecision = entry->xPrecision; 3981 memento.yPrecision = entry->yPrecision; 3982 memento.downTime = entry->downTime; 3983 memento.setPointers(entry); 3984 memento.hovering = actionMasked != AMOTION_EVENT_ACTION_DOWN; 3985 } 3986} 3987 3988void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 3989 pointerCount = entry->pointerCount; 3990 for (uint32_t i = 0; i < entry->pointerCount; i++) { 3991 pointerIds[i] = entry->pointerIds[i]; 3992 pointerCoords[i].copyFrom(entry->lastSample->pointerCoords[i]); 3993 } 3994} 3995 3996void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 3997 Allocator* allocator, Vector<EventEntry*>& outEvents, 3998 const CancelationOptions& options) { 3999 for (size_t i = 0; i < mKeyMementos.size(); ) { 4000 const KeyMemento& memento = mKeyMementos.itemAt(i); 4001 if (shouldCancelKey(memento, options)) { 4002 outEvents.push(allocator->obtainKeyEntry(currentTime, 4003 memento.deviceId, memento.source, 0, 4004 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 4005 memento.keyCode, memento.scanCode, 0, 0, memento.downTime)); 4006 mKeyMementos.removeAt(i); 4007 } else { 4008 i += 1; 4009 } 4010 } 4011 4012 for (size_t i = 0; i < mMotionMementos.size(); ) { 4013 const MotionMemento& memento = mMotionMementos.itemAt(i); 4014 if (shouldCancelMotion(memento, options)) { 4015 outEvents.push(allocator->obtainMotionEntry(currentTime, 4016 memento.deviceId, memento.source, 0, 4017 memento.hovering 4018 ? AMOTION_EVENT_ACTION_HOVER_EXIT 4019 : AMOTION_EVENT_ACTION_CANCEL, 4020 0, 0, 0, 4021 memento.xPrecision, memento.yPrecision, memento.downTime, 4022 memento.pointerCount, memento.pointerIds, memento.pointerCoords)); 4023 mMotionMementos.removeAt(i); 4024 } else { 4025 i += 1; 4026 } 4027 } 4028} 4029 4030void InputDispatcher::InputState::clear() { 4031 mKeyMementos.clear(); 4032 mMotionMementos.clear(); 4033 mFallbackKeys.clear(); 4034} 4035 4036void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 4037 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4038 const MotionMemento& memento = mMotionMementos.itemAt(i); 4039 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 4040 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 4041 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 4042 if (memento.deviceId == otherMemento.deviceId 4043 && memento.source == otherMemento.source) { 4044 other.mMotionMementos.removeAt(j); 4045 } else { 4046 j += 1; 4047 } 4048 } 4049 other.mMotionMementos.push(memento); 4050 } 4051 } 4052} 4053 4054int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) { 4055 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4056 return index >= 0 ? mFallbackKeys.valueAt(index) : -1; 4057} 4058 4059void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode, 4060 int32_t fallbackKeyCode) { 4061 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4062 if (index >= 0) { 4063 mFallbackKeys.replaceValueAt(index, fallbackKeyCode); 4064 } else { 4065 mFallbackKeys.add(originalKeyCode, fallbackKeyCode); 4066 } 4067} 4068 4069void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) { 4070 mFallbackKeys.removeItem(originalKeyCode); 4071} 4072 4073bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 4074 const CancelationOptions& options) { 4075 if (options.keyCode != -1 && memento.keyCode != options.keyCode) { 4076 return false; 4077 } 4078 4079 switch (options.mode) { 4080 case CancelationOptions::CANCEL_ALL_EVENTS: 4081 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4082 return true; 4083 case CancelationOptions::CANCEL_FALLBACK_EVENTS: 4084 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 4085 default: 4086 return false; 4087 } 4088} 4089 4090bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 4091 const CancelationOptions& options) { 4092 switch (options.mode) { 4093 case CancelationOptions::CANCEL_ALL_EVENTS: 4094 return true; 4095 case CancelationOptions::CANCEL_POINTER_EVENTS: 4096 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 4097 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4098 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 4099 default: 4100 return false; 4101 } 4102} 4103 4104 4105// --- InputDispatcher::Connection --- 4106 4107InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 4108 const sp<InputWindowHandle>& inputWindowHandle) : 4109 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 4110 inputPublisher(inputChannel), 4111 lastEventTime(LONG_LONG_MAX), lastDispatchTime(LONG_LONG_MAX) { 4112} 4113 4114InputDispatcher::Connection::~Connection() { 4115} 4116 4117status_t InputDispatcher::Connection::initialize() { 4118 return inputPublisher.initialize(); 4119} 4120 4121const char* InputDispatcher::Connection::getStatusLabel() const { 4122 switch (status) { 4123 case STATUS_NORMAL: 4124 return "NORMAL"; 4125 4126 case STATUS_BROKEN: 4127 return "BROKEN"; 4128 4129 case STATUS_ZOMBIE: 4130 return "ZOMBIE"; 4131 4132 default: 4133 return "UNKNOWN"; 4134 } 4135} 4136 4137InputDispatcher::DispatchEntry* InputDispatcher::Connection::findQueuedDispatchEntryForEvent( 4138 const EventEntry* eventEntry) const { 4139 for (DispatchEntry* dispatchEntry = outboundQueue.tailSentinel.prev; 4140 dispatchEntry != & outboundQueue.headSentinel; dispatchEntry = dispatchEntry->prev) { 4141 if (dispatchEntry->eventEntry == eventEntry) { 4142 return dispatchEntry; 4143 } 4144 } 4145 return NULL; 4146} 4147 4148 4149// --- InputDispatcher::CommandEntry --- 4150 4151InputDispatcher::CommandEntry::CommandEntry() : 4152 keyEntry(NULL) { 4153} 4154 4155InputDispatcher::CommandEntry::~CommandEntry() { 4156} 4157 4158 4159// --- InputDispatcher::TouchState --- 4160 4161InputDispatcher::TouchState::TouchState() : 4162 down(false), split(false), deviceId(-1), source(0) { 4163} 4164 4165InputDispatcher::TouchState::~TouchState() { 4166} 4167 4168void InputDispatcher::TouchState::reset() { 4169 down = false; 4170 split = false; 4171 deviceId = -1; 4172 source = 0; 4173 windows.clear(); 4174} 4175 4176void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 4177 down = other.down; 4178 split = other.split; 4179 deviceId = other.deviceId; 4180 source = other.source; 4181 windows.clear(); 4182 windows.appendVector(other.windows); 4183} 4184 4185void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window, 4186 int32_t targetFlags, BitSet32 pointerIds) { 4187 if (targetFlags & InputTarget::FLAG_SPLIT) { 4188 split = true; 4189 } 4190 4191 for (size_t i = 0; i < windows.size(); i++) { 4192 TouchedWindow& touchedWindow = windows.editItemAt(i); 4193 if (touchedWindow.window == window) { 4194 touchedWindow.targetFlags |= targetFlags; 4195 touchedWindow.pointerIds.value |= pointerIds.value; 4196 return; 4197 } 4198 } 4199 4200 windows.push(); 4201 4202 TouchedWindow& touchedWindow = windows.editTop(); 4203 touchedWindow.window = window; 4204 touchedWindow.targetFlags = targetFlags; 4205 touchedWindow.pointerIds = pointerIds; 4206 touchedWindow.channel = window->inputChannel; 4207} 4208 4209void InputDispatcher::TouchState::filterNonAsIsTouchWindows() { 4210 for (size_t i = 0 ; i < windows.size(); ) { 4211 TouchedWindow& window = windows.editItemAt(i); 4212 if (window.targetFlags & InputTarget::FLAG_DISPATCH_AS_IS) { 4213 window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK; 4214 window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS; 4215 i += 1; 4216 } else { 4217 windows.removeAt(i); 4218 } 4219 } 4220} 4221 4222const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() { 4223 for (size_t i = 0; i < windows.size(); i++) { 4224 if (windows[i].targetFlags & InputTarget::FLAG_FOREGROUND) { 4225 return windows[i].window; 4226 } 4227 } 4228 return NULL; 4229} 4230 4231 4232// --- InputDispatcherThread --- 4233 4234InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 4235 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 4236} 4237 4238InputDispatcherThread::~InputDispatcherThread() { 4239} 4240 4241bool InputDispatcherThread::threadLoop() { 4242 mDispatcher->dispatchOnce(); 4243 return true; 4244} 4245 4246} // namespace android 4247