InputDispatcher.cpp revision da3d5a91b6b311ed77f2707d4456c1f18b84d73b
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), 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 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 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 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->isInjected()) { 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 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 = 0; 1600 target.xOffset = 0; 1601 target.yOffset = 0; 1602 } 1603} 1604 1605bool InputDispatcher::checkInjectionPermission(const InputWindow* window, 1606 const InjectionState* injectionState) { 1607 if (injectionState 1608 && (window == NULL || window->ownerUid != injectionState->injectorUid) 1609 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1610 if (window) { 1611 LOGW("Permission denied: injecting event from pid %d uid %d to window " 1612 "with input channel %s owned by uid %d", 1613 injectionState->injectorPid, injectionState->injectorUid, 1614 window->inputChannel->getName().string(), 1615 window->ownerUid); 1616 } else { 1617 LOGW("Permission denied: injecting event from pid %d uid %d", 1618 injectionState->injectorPid, injectionState->injectorUid); 1619 } 1620 return false; 1621 } 1622 return true; 1623} 1624 1625bool InputDispatcher::isWindowObscuredAtPointLocked( 1626 const InputWindow* window, int32_t x, int32_t y) const { 1627 size_t numWindows = mWindows.size(); 1628 for (size_t i = 0; i < numWindows; i++) { 1629 const InputWindow* other = & mWindows.itemAt(i); 1630 if (other == window) { 1631 break; 1632 } 1633 if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) { 1634 return true; 1635 } 1636 } 1637 return false; 1638} 1639 1640bool InputDispatcher::isWindowFinishedWithPreviousInputLocked(const InputWindow* window) { 1641 ssize_t connectionIndex = getConnectionIndexLocked(window->inputChannel); 1642 if (connectionIndex >= 0) { 1643 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1644 return connection->outboundQueue.isEmpty(); 1645 } else { 1646 return true; 1647 } 1648} 1649 1650String8 InputDispatcher::getApplicationWindowLabelLocked(const InputApplication* application, 1651 const InputWindow* window) { 1652 if (application) { 1653 if (window) { 1654 String8 label(application->name); 1655 label.append(" - "); 1656 label.append(window->name); 1657 return label; 1658 } else { 1659 return application->name; 1660 } 1661 } else if (window) { 1662 return window->name; 1663 } else { 1664 return String8("<unknown application or window>"); 1665 } 1666} 1667 1668void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1669 int32_t eventType = POWER_MANAGER_OTHER_EVENT; 1670 switch (eventEntry->type) { 1671 case EventEntry::TYPE_MOTION: { 1672 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1673 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1674 return; 1675 } 1676 1677 if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) { 1678 eventType = POWER_MANAGER_TOUCH_EVENT; 1679 } 1680 break; 1681 } 1682 case EventEntry::TYPE_KEY: { 1683 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1684 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1685 return; 1686 } 1687 eventType = POWER_MANAGER_BUTTON_EVENT; 1688 break; 1689 } 1690 } 1691 1692 CommandEntry* commandEntry = postCommandLocked( 1693 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1694 commandEntry->eventTime = eventEntry->eventTime; 1695 commandEntry->userActivityEventType = eventType; 1696} 1697 1698void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1699 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1700 bool resumeWithAppendedMotionSample) { 1701#if DEBUG_DISPATCH_CYCLE 1702 LOGD("channel '%s' ~ prepareDispatchCycle - flags=%d, " 1703 "xOffset=%f, yOffset=%f, " 1704 "pointerIds=0x%x, " 1705 "resumeWithAppendedMotionSample=%s", 1706 connection->getInputChannelName(), inputTarget->flags, 1707 inputTarget->xOffset, inputTarget->yOffset, 1708 inputTarget->pointerIds.value, 1709 toString(resumeWithAppendedMotionSample)); 1710#endif 1711 1712 // Make sure we are never called for streaming when splitting across multiple windows. 1713 bool isSplit = inputTarget->flags & InputTarget::FLAG_SPLIT; 1714 assert(! (resumeWithAppendedMotionSample && isSplit)); 1715 1716 // Skip this event if the connection status is not normal. 1717 // We don't want to enqueue additional outbound events if the connection is broken. 1718 if (connection->status != Connection::STATUS_NORMAL) { 1719#if DEBUG_DISPATCH_CYCLE 1720 LOGD("channel '%s' ~ Dropping event because the channel status is %s", 1721 connection->getInputChannelName(), connection->getStatusLabel()); 1722#endif 1723 return; 1724 } 1725 1726 // Split a motion event if needed. 1727 if (isSplit) { 1728 assert(eventEntry->type == EventEntry::TYPE_MOTION); 1729 1730 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1731 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1732 MotionEntry* splitMotionEntry = splitMotionEvent( 1733 originalMotionEntry, inputTarget->pointerIds); 1734 if (!splitMotionEntry) { 1735 return; // split event was dropped 1736 } 1737#if DEBUG_FOCUS 1738 LOGD("channel '%s' ~ Split motion event.", 1739 connection->getInputChannelName()); 1740 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1741#endif 1742 eventEntry = splitMotionEntry; 1743 } 1744 } 1745 1746 // Resume the dispatch cycle with a freshly appended motion sample. 1747 // First we check that the last dispatch entry in the outbound queue is for the same 1748 // motion event to which we appended the motion sample. If we find such a dispatch 1749 // entry, and if it is currently in progress then we try to stream the new sample. 1750 bool wasEmpty = connection->outboundQueue.isEmpty(); 1751 1752 if (! wasEmpty && resumeWithAppendedMotionSample) { 1753 DispatchEntry* motionEventDispatchEntry = 1754 connection->findQueuedDispatchEntryForEvent(eventEntry); 1755 if (motionEventDispatchEntry) { 1756 // If the dispatch entry is not in progress, then we must be busy dispatching an 1757 // earlier event. Not a problem, the motion event is on the outbound queue and will 1758 // be dispatched later. 1759 if (! motionEventDispatchEntry->inProgress) { 1760#if DEBUG_BATCHING 1761 LOGD("channel '%s' ~ Not streaming because the motion event has " 1762 "not yet been dispatched. " 1763 "(Waiting for earlier events to be consumed.)", 1764 connection->getInputChannelName()); 1765#endif 1766 return; 1767 } 1768 1769 // If the dispatch entry is in progress but it already has a tail of pending 1770 // motion samples, then it must mean that the shared memory buffer filled up. 1771 // Not a problem, when this dispatch cycle is finished, we will eventually start 1772 // a new dispatch cycle to process the tail and that tail includes the newly 1773 // appended motion sample. 1774 if (motionEventDispatchEntry->tailMotionSample) { 1775#if DEBUG_BATCHING 1776 LOGD("channel '%s' ~ Not streaming because no new samples can " 1777 "be appended to the motion event in this dispatch cycle. " 1778 "(Waiting for next dispatch cycle to start.)", 1779 connection->getInputChannelName()); 1780#endif 1781 return; 1782 } 1783 1784 // The dispatch entry is in progress and is still potentially open for streaming. 1785 // Try to stream the new motion sample. This might fail if the consumer has already 1786 // consumed the motion event (or if the channel is broken). 1787 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1788 MotionSample* appendedMotionSample = motionEntry->lastSample; 1789 status_t status = connection->inputPublisher.appendMotionSample( 1790 appendedMotionSample->eventTime, appendedMotionSample->pointerCoords); 1791 if (status == OK) { 1792#if DEBUG_BATCHING 1793 LOGD("channel '%s' ~ Successfully streamed new motion sample.", 1794 connection->getInputChannelName()); 1795#endif 1796 return; 1797 } 1798 1799#if DEBUG_BATCHING 1800 if (status == NO_MEMORY) { 1801 LOGD("channel '%s' ~ Could not append motion sample to currently " 1802 "dispatched move event because the shared memory buffer is full. " 1803 "(Waiting for next dispatch cycle to start.)", 1804 connection->getInputChannelName()); 1805 } else if (status == status_t(FAILED_TRANSACTION)) { 1806 LOGD("channel '%s' ~ Could not append motion sample to currently " 1807 "dispatched move event because the event has already been consumed. " 1808 "(Waiting for next dispatch cycle to start.)", 1809 connection->getInputChannelName()); 1810 } else { 1811 LOGD("channel '%s' ~ Could not append motion sample to currently " 1812 "dispatched move event due to an error, status=%d. " 1813 "(Waiting for next dispatch cycle to start.)", 1814 connection->getInputChannelName(), status); 1815 } 1816#endif 1817 // Failed to stream. Start a new tail of pending motion samples to dispatch 1818 // in the next cycle. 1819 motionEventDispatchEntry->tailMotionSample = appendedMotionSample; 1820 return; 1821 } 1822 } 1823 1824 // Enqueue dispatch entries for the requested modes. 1825 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1826 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT); 1827 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1828 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_OUTSIDE); 1829 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1830 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER); 1831 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1832 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_IS); 1833 1834 // If the outbound queue was previously empty, start the dispatch cycle going. 1835 if (wasEmpty) { 1836 activateConnectionLocked(connection.get()); 1837 startDispatchCycleLocked(currentTime, connection); 1838 } 1839} 1840 1841void InputDispatcher::enqueueDispatchEntryLocked( 1842 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1843 bool resumeWithAppendedMotionSample, int32_t dispatchMode) { 1844 int32_t inputTargetFlags = inputTarget->flags; 1845 if (!(inputTargetFlags & dispatchMode)) { 1846 return; 1847 } 1848 inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode; 1849 1850 // This is a new event. 1851 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1852 DispatchEntry* dispatchEntry = mAllocator.obtainDispatchEntry(eventEntry, // increments ref 1853 inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset); 1854 if (dispatchEntry->hasForegroundTarget()) { 1855 incrementPendingForegroundDispatchesLocked(eventEntry); 1856 } 1857 1858 // Handle the case where we could not stream a new motion sample because the consumer has 1859 // already consumed the motion event (otherwise the corresponding dispatch entry would 1860 // still be in the outbound queue for this connection). We set the head motion sample 1861 // to the list starting with the newly appended motion sample. 1862 if (resumeWithAppendedMotionSample) { 1863#if DEBUG_BATCHING 1864 LOGD("channel '%s' ~ Preparing a new dispatch cycle for additional motion samples " 1865 "that cannot be streamed because the motion event has already been consumed.", 1866 connection->getInputChannelName()); 1867#endif 1868 MotionSample* appendedMotionSample = static_cast<MotionEntry*>(eventEntry)->lastSample; 1869 dispatchEntry->headMotionSample = appendedMotionSample; 1870 } 1871 1872 // Enqueue the dispatch entry. 1873 connection->outboundQueue.enqueueAtTail(dispatchEntry); 1874} 1875 1876void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 1877 const sp<Connection>& connection) { 1878#if DEBUG_DISPATCH_CYCLE 1879 LOGD("channel '%s' ~ startDispatchCycle", 1880 connection->getInputChannelName()); 1881#endif 1882 1883 assert(connection->status == Connection::STATUS_NORMAL); 1884 assert(! connection->outboundQueue.isEmpty()); 1885 1886 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1887 assert(! dispatchEntry->inProgress); 1888 1889 // Mark the dispatch entry as in progress. 1890 dispatchEntry->inProgress = true; 1891 1892 // Publish the event. 1893 status_t status; 1894 EventEntry* eventEntry = dispatchEntry->eventEntry; 1895 switch (eventEntry->type) { 1896 case EventEntry::TYPE_KEY: { 1897 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1898 1899 // Apply target flags. 1900 int32_t action = keyEntry->action; 1901 int32_t flags = keyEntry->flags; 1902 1903 // Update the connection's input state. 1904 connection->inputState.trackKey(keyEntry, action); 1905 1906 // Publish the key event. 1907 status = connection->inputPublisher.publishKeyEvent(keyEntry->deviceId, keyEntry->source, 1908 action, flags, keyEntry->keyCode, keyEntry->scanCode, 1909 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 1910 keyEntry->eventTime); 1911 1912 if (status) { 1913 LOGE("channel '%s' ~ Could not publish key event, " 1914 "status=%d", connection->getInputChannelName(), status); 1915 abortBrokenDispatchCycleLocked(currentTime, connection); 1916 return; 1917 } 1918 break; 1919 } 1920 1921 case EventEntry::TYPE_MOTION: { 1922 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1923 1924 // Apply target flags. 1925 int32_t action = motionEntry->action; 1926 int32_t flags = motionEntry->flags; 1927 if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 1928 action = AMOTION_EVENT_ACTION_OUTSIDE; 1929 } else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) { 1930 action = AMOTION_EVENT_ACTION_HOVER_EXIT; 1931 } else if (dispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) { 1932 action = AMOTION_EVENT_ACTION_HOVER_ENTER; 1933 } 1934 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 1935 flags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 1936 } 1937 1938 // If headMotionSample is non-NULL, then it points to the first new sample that we 1939 // were unable to dispatch during the previous cycle so we resume dispatching from 1940 // that point in the list of motion samples. 1941 // Otherwise, we just start from the first sample of the motion event. 1942 MotionSample* firstMotionSample = dispatchEntry->headMotionSample; 1943 if (! firstMotionSample) { 1944 firstMotionSample = & motionEntry->firstSample; 1945 } 1946 1947 // Set the X and Y offset depending on the input source. 1948 float xOffset, yOffset; 1949 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 1950 xOffset = dispatchEntry->xOffset; 1951 yOffset = dispatchEntry->yOffset; 1952 } else { 1953 xOffset = 0.0f; 1954 yOffset = 0.0f; 1955 } 1956 1957 // Update the connection's input state. 1958 connection->inputState.trackMotion(motionEntry, action); 1959 1960 // Publish the motion event and the first motion sample. 1961 status = connection->inputPublisher.publishMotionEvent(motionEntry->deviceId, 1962 motionEntry->source, action, flags, motionEntry->edgeFlags, motionEntry->metaState, 1963 xOffset, yOffset, 1964 motionEntry->xPrecision, motionEntry->yPrecision, 1965 motionEntry->downTime, firstMotionSample->eventTime, 1966 motionEntry->pointerCount, motionEntry->pointerIds, 1967 firstMotionSample->pointerCoords); 1968 1969 if (status) { 1970 LOGE("channel '%s' ~ Could not publish motion event, " 1971 "status=%d", connection->getInputChannelName(), status); 1972 abortBrokenDispatchCycleLocked(currentTime, connection); 1973 return; 1974 } 1975 1976 if (action == AMOTION_EVENT_ACTION_MOVE 1977 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1978 // Append additional motion samples. 1979 MotionSample* nextMotionSample = firstMotionSample->next; 1980 for (; nextMotionSample != NULL; nextMotionSample = nextMotionSample->next) { 1981 status = connection->inputPublisher.appendMotionSample( 1982 nextMotionSample->eventTime, nextMotionSample->pointerCoords); 1983 if (status == NO_MEMORY) { 1984#if DEBUG_DISPATCH_CYCLE 1985 LOGD("channel '%s' ~ Shared memory buffer full. Some motion samples will " 1986 "be sent in the next dispatch cycle.", 1987 connection->getInputChannelName()); 1988#endif 1989 break; 1990 } 1991 if (status != OK) { 1992 LOGE("channel '%s' ~ Could not append motion sample " 1993 "for a reason other than out of memory, status=%d", 1994 connection->getInputChannelName(), status); 1995 abortBrokenDispatchCycleLocked(currentTime, connection); 1996 return; 1997 } 1998 } 1999 2000 // Remember the next motion sample that we could not dispatch, in case we ran out 2001 // of space in the shared memory buffer. 2002 dispatchEntry->tailMotionSample = nextMotionSample; 2003 } 2004 break; 2005 } 2006 2007 default: { 2008 assert(false); 2009 } 2010 } 2011 2012 // Send the dispatch signal. 2013 status = connection->inputPublisher.sendDispatchSignal(); 2014 if (status) { 2015 LOGE("channel '%s' ~ Could not send dispatch signal, status=%d", 2016 connection->getInputChannelName(), status); 2017 abortBrokenDispatchCycleLocked(currentTime, connection); 2018 return; 2019 } 2020 2021 // Record information about the newly started dispatch cycle. 2022 connection->lastEventTime = eventEntry->eventTime; 2023 connection->lastDispatchTime = currentTime; 2024 2025 // Notify other system components. 2026 onDispatchCycleStartedLocked(currentTime, connection); 2027} 2028 2029void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 2030 const sp<Connection>& connection, bool handled) { 2031#if DEBUG_DISPATCH_CYCLE 2032 LOGD("channel '%s' ~ finishDispatchCycle - %01.1fms since event, " 2033 "%01.1fms since dispatch, handled=%s", 2034 connection->getInputChannelName(), 2035 connection->getEventLatencyMillis(currentTime), 2036 connection->getDispatchLatencyMillis(currentTime), 2037 toString(handled)); 2038#endif 2039 2040 if (connection->status == Connection::STATUS_BROKEN 2041 || connection->status == Connection::STATUS_ZOMBIE) { 2042 return; 2043 } 2044 2045 // Reset the publisher since the event has been consumed. 2046 // We do this now so that the publisher can release some of its internal resources 2047 // while waiting for the next dispatch cycle to begin. 2048 status_t status = connection->inputPublisher.reset(); 2049 if (status) { 2050 LOGE("channel '%s' ~ Could not reset publisher, status=%d", 2051 connection->getInputChannelName(), status); 2052 abortBrokenDispatchCycleLocked(currentTime, connection); 2053 return; 2054 } 2055 2056 // Notify other system components and prepare to start the next dispatch cycle. 2057 onDispatchCycleFinishedLocked(currentTime, connection, handled); 2058} 2059 2060void InputDispatcher::startNextDispatchCycleLocked(nsecs_t currentTime, 2061 const sp<Connection>& connection) { 2062 // Start the next dispatch cycle for this connection. 2063 while (! connection->outboundQueue.isEmpty()) { 2064 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2065 if (dispatchEntry->inProgress) { 2066 // Finish or resume current event in progress. 2067 if (dispatchEntry->tailMotionSample) { 2068 // We have a tail of undispatched motion samples. 2069 // Reuse the same DispatchEntry and start a new cycle. 2070 dispatchEntry->inProgress = false; 2071 dispatchEntry->headMotionSample = dispatchEntry->tailMotionSample; 2072 dispatchEntry->tailMotionSample = NULL; 2073 startDispatchCycleLocked(currentTime, connection); 2074 return; 2075 } 2076 // Finished. 2077 connection->outboundQueue.dequeueAtHead(); 2078 if (dispatchEntry->hasForegroundTarget()) { 2079 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2080 } 2081 mAllocator.releaseDispatchEntry(dispatchEntry); 2082 } else { 2083 // If the head is not in progress, then we must have already dequeued the in 2084 // progress event, which means we actually aborted it. 2085 // So just start the next event for this connection. 2086 startDispatchCycleLocked(currentTime, connection); 2087 return; 2088 } 2089 } 2090 2091 // Outbound queue is empty, deactivate the connection. 2092 deactivateConnectionLocked(connection.get()); 2093} 2094 2095void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 2096 const sp<Connection>& connection) { 2097#if DEBUG_DISPATCH_CYCLE 2098 LOGD("channel '%s' ~ abortBrokenDispatchCycle", 2099 connection->getInputChannelName()); 2100#endif 2101 2102 // Clear the outbound queue. 2103 drainOutboundQueueLocked(connection.get()); 2104 2105 // The connection appears to be unrecoverably broken. 2106 // Ignore already broken or zombie connections. 2107 if (connection->status == Connection::STATUS_NORMAL) { 2108 connection->status = Connection::STATUS_BROKEN; 2109 2110 // Notify other system components. 2111 onDispatchCycleBrokenLocked(currentTime, connection); 2112 } 2113} 2114 2115void InputDispatcher::drainOutboundQueueLocked(Connection* connection) { 2116 while (! connection->outboundQueue.isEmpty()) { 2117 DispatchEntry* dispatchEntry = connection->outboundQueue.dequeueAtHead(); 2118 if (dispatchEntry->hasForegroundTarget()) { 2119 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2120 } 2121 mAllocator.releaseDispatchEntry(dispatchEntry); 2122 } 2123 2124 deactivateConnectionLocked(connection); 2125} 2126 2127int InputDispatcher::handleReceiveCallback(int receiveFd, int events, void* data) { 2128 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2129 2130 { // acquire lock 2131 AutoMutex _l(d->mLock); 2132 2133 ssize_t connectionIndex = d->mConnectionsByReceiveFd.indexOfKey(receiveFd); 2134 if (connectionIndex < 0) { 2135 LOGE("Received spurious receive callback for unknown input channel. " 2136 "fd=%d, events=0x%x", receiveFd, events); 2137 return 0; // remove the callback 2138 } 2139 2140 nsecs_t currentTime = now(); 2141 2142 sp<Connection> connection = d->mConnectionsByReceiveFd.valueAt(connectionIndex); 2143 if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) { 2144 LOGE("channel '%s' ~ Consumer closed input channel or an error occurred. " 2145 "events=0x%x", connection->getInputChannelName(), events); 2146 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2147 d->runCommandsLockedInterruptible(); 2148 return 0; // remove the callback 2149 } 2150 2151 if (! (events & ALOOPER_EVENT_INPUT)) { 2152 LOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2153 "events=0x%x", connection->getInputChannelName(), events); 2154 return 1; 2155 } 2156 2157 bool handled = false; 2158 status_t status = connection->inputPublisher.receiveFinishedSignal(&handled); 2159 if (status) { 2160 LOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2161 connection->getInputChannelName(), status); 2162 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2163 d->runCommandsLockedInterruptible(); 2164 return 0; // remove the callback 2165 } 2166 2167 d->finishDispatchCycleLocked(currentTime, connection, handled); 2168 d->runCommandsLockedInterruptible(); 2169 return 1; 2170 } // release lock 2171} 2172 2173void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2174 const CancelationOptions& options) { 2175 for (size_t i = 0; i < mConnectionsByReceiveFd.size(); i++) { 2176 synthesizeCancelationEventsForConnectionLocked( 2177 mConnectionsByReceiveFd.valueAt(i), options); 2178 } 2179} 2180 2181void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2182 const sp<InputChannel>& channel, const CancelationOptions& options) { 2183 ssize_t index = getConnectionIndexLocked(channel); 2184 if (index >= 0) { 2185 synthesizeCancelationEventsForConnectionLocked( 2186 mConnectionsByReceiveFd.valueAt(index), options); 2187 } 2188} 2189 2190void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2191 const sp<Connection>& connection, const CancelationOptions& options) { 2192 nsecs_t currentTime = now(); 2193 2194 mTempCancelationEvents.clear(); 2195 connection->inputState.synthesizeCancelationEvents(currentTime, & mAllocator, 2196 mTempCancelationEvents, options); 2197 2198 if (! mTempCancelationEvents.isEmpty() 2199 && connection->status != Connection::STATUS_BROKEN) { 2200#if DEBUG_OUTBOUND_EVENT_DETAILS 2201 LOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2202 "with reality: %s, mode=%d.", 2203 connection->getInputChannelName(), mTempCancelationEvents.size(), 2204 options.reason, options.mode); 2205#endif 2206 for (size_t i = 0; i < mTempCancelationEvents.size(); i++) { 2207 EventEntry* cancelationEventEntry = mTempCancelationEvents.itemAt(i); 2208 switch (cancelationEventEntry->type) { 2209 case EventEntry::TYPE_KEY: 2210 logOutboundKeyDetailsLocked("cancel - ", 2211 static_cast<KeyEntry*>(cancelationEventEntry)); 2212 break; 2213 case EventEntry::TYPE_MOTION: 2214 logOutboundMotionDetailsLocked("cancel - ", 2215 static_cast<MotionEntry*>(cancelationEventEntry)); 2216 break; 2217 } 2218 2219 int32_t xOffset, yOffset; 2220 const InputWindow* window = getWindowLocked(connection->inputChannel); 2221 if (window) { 2222 xOffset = -window->frameLeft; 2223 yOffset = -window->frameTop; 2224 } else { 2225 xOffset = 0; 2226 yOffset = 0; 2227 } 2228 2229 DispatchEntry* cancelationDispatchEntry = 2230 mAllocator.obtainDispatchEntry(cancelationEventEntry, // increments ref 2231 0, xOffset, yOffset); 2232 connection->outboundQueue.enqueueAtTail(cancelationDispatchEntry); 2233 2234 mAllocator.releaseEventEntry(cancelationEventEntry); 2235 } 2236 2237 if (!connection->outboundQueue.headSentinel.next->inProgress) { 2238 startDispatchCycleLocked(currentTime, connection); 2239 } 2240 } 2241} 2242 2243InputDispatcher::MotionEntry* 2244InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2245 assert(pointerIds.value != 0); 2246 2247 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2248 int32_t splitPointerIds[MAX_POINTERS]; 2249 PointerCoords splitPointerCoords[MAX_POINTERS]; 2250 2251 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2252 uint32_t splitPointerCount = 0; 2253 2254 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2255 originalPointerIndex++) { 2256 int32_t pointerId = uint32_t(originalMotionEntry->pointerIds[originalPointerIndex]); 2257 if (pointerIds.hasBit(pointerId)) { 2258 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2259 splitPointerIds[splitPointerCount] = pointerId; 2260 splitPointerCoords[splitPointerCount].copyFrom( 2261 originalMotionEntry->firstSample.pointerCoords[originalPointerIndex]); 2262 splitPointerCount += 1; 2263 } 2264 } 2265 2266 if (splitPointerCount != pointerIds.count()) { 2267 // This is bad. We are missing some of the pointers that we expected to deliver. 2268 // Most likely this indicates that we received an ACTION_MOVE events that has 2269 // different pointer ids than we expected based on the previous ACTION_DOWN 2270 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2271 // in this way. 2272 LOGW("Dropping split motion event because the pointer count is %d but " 2273 "we expected there to be %d pointers. This probably means we received " 2274 "a broken sequence of pointer ids from the input device.", 2275 splitPointerCount, pointerIds.count()); 2276 return NULL; 2277 } 2278 2279 int32_t action = originalMotionEntry->action; 2280 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2281 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2282 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2283 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2284 int32_t pointerId = originalMotionEntry->pointerIds[originalPointerIndex]; 2285 if (pointerIds.hasBit(pointerId)) { 2286 if (pointerIds.count() == 1) { 2287 // The first/last pointer went down/up. 2288 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2289 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2290 } else { 2291 // A secondary pointer went down/up. 2292 uint32_t splitPointerIndex = 0; 2293 while (pointerId != splitPointerIds[splitPointerIndex]) { 2294 splitPointerIndex += 1; 2295 } 2296 action = maskedAction | (splitPointerIndex 2297 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2298 } 2299 } else { 2300 // An unrelated pointer changed. 2301 action = AMOTION_EVENT_ACTION_MOVE; 2302 } 2303 } 2304 2305 MotionEntry* splitMotionEntry = mAllocator.obtainMotionEntry( 2306 originalMotionEntry->eventTime, 2307 originalMotionEntry->deviceId, 2308 originalMotionEntry->source, 2309 originalMotionEntry->policyFlags, 2310 action, 2311 originalMotionEntry->flags, 2312 originalMotionEntry->metaState, 2313 originalMotionEntry->edgeFlags, 2314 originalMotionEntry->xPrecision, 2315 originalMotionEntry->yPrecision, 2316 originalMotionEntry->downTime, 2317 splitPointerCount, splitPointerIds, splitPointerCoords); 2318 2319 for (MotionSample* originalMotionSample = originalMotionEntry->firstSample.next; 2320 originalMotionSample != NULL; originalMotionSample = originalMotionSample->next) { 2321 for (uint32_t splitPointerIndex = 0; splitPointerIndex < splitPointerCount; 2322 splitPointerIndex++) { 2323 uint32_t originalPointerIndex = splitPointerIndexMap[splitPointerIndex]; 2324 splitPointerCoords[splitPointerIndex].copyFrom( 2325 originalMotionSample->pointerCoords[originalPointerIndex]); 2326 } 2327 2328 mAllocator.appendMotionSample(splitMotionEntry, originalMotionSample->eventTime, 2329 splitPointerCoords); 2330 } 2331 2332 if (originalMotionEntry->injectionState) { 2333 splitMotionEntry->injectionState = originalMotionEntry->injectionState; 2334 splitMotionEntry->injectionState->refCount += 1; 2335 } 2336 2337 return splitMotionEntry; 2338} 2339 2340void InputDispatcher::notifyConfigurationChanged(nsecs_t eventTime) { 2341#if DEBUG_INBOUND_EVENT_DETAILS 2342 LOGD("notifyConfigurationChanged - eventTime=%lld", eventTime); 2343#endif 2344 2345 bool needWake; 2346 { // acquire lock 2347 AutoMutex _l(mLock); 2348 2349 ConfigurationChangedEntry* newEntry = mAllocator.obtainConfigurationChangedEntry(eventTime); 2350 needWake = enqueueInboundEventLocked(newEntry); 2351 } // release lock 2352 2353 if (needWake) { 2354 mLooper->wake(); 2355 } 2356} 2357 2358void InputDispatcher::notifyKey(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2359 uint32_t policyFlags, int32_t action, int32_t flags, 2360 int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime) { 2361#if DEBUG_INBOUND_EVENT_DETAILS 2362 LOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2363 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2364 eventTime, deviceId, source, policyFlags, action, flags, 2365 keyCode, scanCode, metaState, downTime); 2366#endif 2367 if (! validateKeyEvent(action)) { 2368 return; 2369 } 2370 2371 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2372 policyFlags |= POLICY_FLAG_VIRTUAL; 2373 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2374 } 2375 if (policyFlags & POLICY_FLAG_ALT) { 2376 metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON; 2377 } 2378 if (policyFlags & POLICY_FLAG_ALT_GR) { 2379 metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON; 2380 } 2381 if (policyFlags & POLICY_FLAG_SHIFT) { 2382 metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON; 2383 } 2384 if (policyFlags & POLICY_FLAG_CAPS_LOCK) { 2385 metaState |= AMETA_CAPS_LOCK_ON; 2386 } 2387 if (policyFlags & POLICY_FLAG_FUNCTION) { 2388 metaState |= AMETA_FUNCTION_ON; 2389 } 2390 2391 policyFlags |= POLICY_FLAG_TRUSTED; 2392 2393 KeyEvent event; 2394 event.initialize(deviceId, source, action, flags, keyCode, scanCode, 2395 metaState, 0, downTime, eventTime); 2396 2397 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2398 2399 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2400 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2401 } 2402 2403 bool needWake; 2404 { // acquire lock 2405 AutoMutex _l(mLock); 2406 2407 int32_t repeatCount = 0; 2408 KeyEntry* newEntry = mAllocator.obtainKeyEntry(eventTime, 2409 deviceId, source, policyFlags, action, flags, keyCode, scanCode, 2410 metaState, repeatCount, downTime); 2411 2412 needWake = enqueueInboundEventLocked(newEntry); 2413 } // release lock 2414 2415 if (needWake) { 2416 mLooper->wake(); 2417 } 2418} 2419 2420void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2421 uint32_t policyFlags, int32_t action, int32_t flags, int32_t metaState, int32_t edgeFlags, 2422 uint32_t pointerCount, const int32_t* pointerIds, const PointerCoords* pointerCoords, 2423 float xPrecision, float yPrecision, nsecs_t downTime) { 2424#if DEBUG_INBOUND_EVENT_DETAILS 2425 LOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2426 "action=0x%x, flags=0x%x, metaState=0x%x, edgeFlags=0x%x, " 2427 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2428 eventTime, deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2429 xPrecision, yPrecision, downTime); 2430 for (uint32_t i = 0; i < pointerCount; i++) { 2431 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 2432 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2433 "orientation=%f", 2434 i, pointerIds[i], 2435 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2436 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2437 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2438 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2439 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2440 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2441 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2442 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2443 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2444 } 2445#endif 2446 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2447 return; 2448 } 2449 2450 policyFlags |= POLICY_FLAG_TRUSTED; 2451 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2452 2453 bool needWake; 2454 { // acquire lock 2455 AutoMutex _l(mLock); 2456 2457 // Attempt batching and streaming of move events. 2458 if (action == AMOTION_EVENT_ACTION_MOVE 2459 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2460 // BATCHING CASE 2461 // 2462 // Try to append a move sample to the tail of the inbound queue for this device. 2463 // Give up if we encounter a non-move motion event for this device since that 2464 // means we cannot append any new samples until a new motion event has started. 2465 for (EventEntry* entry = mInboundQueue.tailSentinel.prev; 2466 entry != & mInboundQueue.headSentinel; entry = entry->prev) { 2467 if (entry->type != EventEntry::TYPE_MOTION) { 2468 // Keep looking for motion events. 2469 continue; 2470 } 2471 2472 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 2473 if (motionEntry->deviceId != deviceId 2474 || motionEntry->source != source) { 2475 // Keep looking for this device and source. 2476 continue; 2477 } 2478 2479 if (motionEntry->action != action 2480 || motionEntry->pointerCount != pointerCount 2481 || motionEntry->isInjected()) { 2482 // Last motion event in the queue for this device and source is 2483 // not compatible for appending new samples. Stop here. 2484 goto NoBatchingOrStreaming; 2485 } 2486 2487 // The last motion event is a move and is compatible for appending. 2488 // Do the batching magic. 2489 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2490#if DEBUG_BATCHING 2491 LOGD("Appended motion sample onto batch for most recent " 2492 "motion event for this device in the inbound queue."); 2493#endif 2494 return; // done! 2495 } 2496 2497 // STREAMING CASE 2498 // 2499 // There is no pending motion event (of any kind) for this device in the inbound queue. 2500 // Search the outbound queue for the current foreground targets to find a dispatched 2501 // motion event that is still in progress. If found, then, appen the new sample to 2502 // that event and push it out to all current targets. The logic in 2503 // prepareDispatchCycleLocked takes care of the case where some targets may 2504 // already have consumed the motion event by starting a new dispatch cycle if needed. 2505 if (mCurrentInputTargetsValid) { 2506 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 2507 const InputTarget& inputTarget = mCurrentInputTargets[i]; 2508 if ((inputTarget.flags & InputTarget::FLAG_FOREGROUND) == 0) { 2509 // Skip non-foreground targets. We only want to stream if there is at 2510 // least one foreground target whose dispatch is still in progress. 2511 continue; 2512 } 2513 2514 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 2515 if (connectionIndex < 0) { 2516 // Connection must no longer be valid. 2517 continue; 2518 } 2519 2520 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 2521 if (connection->outboundQueue.isEmpty()) { 2522 // This foreground target has an empty outbound queue. 2523 continue; 2524 } 2525 2526 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2527 if (! dispatchEntry->inProgress 2528 || dispatchEntry->eventEntry->type != EventEntry::TYPE_MOTION 2529 || dispatchEntry->isSplit()) { 2530 // No motion event is being dispatched, or it is being split across 2531 // windows in which case we cannot stream. 2532 continue; 2533 } 2534 2535 MotionEntry* motionEntry = static_cast<MotionEntry*>( 2536 dispatchEntry->eventEntry); 2537 if (motionEntry->action != action 2538 || motionEntry->deviceId != deviceId 2539 || motionEntry->source != source 2540 || motionEntry->pointerCount != pointerCount 2541 || motionEntry->isInjected()) { 2542 // The motion event is not compatible with this move. 2543 continue; 2544 } 2545 2546 if (action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2547 if (!mLastHoverWindow) { 2548#if DEBUG_BATCHING 2549 LOGD("Not streaming hover move because there is no " 2550 "last hovered window."); 2551#endif 2552 goto NoBatchingOrStreaming; 2553 } 2554 2555 const InputWindow* hoverWindow = findTouchedWindowAtLocked( 2556 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X), 2557 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y)); 2558 if (mLastHoverWindow != hoverWindow) { 2559#if DEBUG_BATCHING 2560 LOGD("Not streaming hover move because the last hovered window " 2561 "is '%s' but the currently hovered window is '%s'.", 2562 mLastHoverWindow->name.string(), 2563 hoverWindow ? hoverWindow->name.string() : "<null>"); 2564#endif 2565 goto NoBatchingOrStreaming; 2566 } 2567 } 2568 2569 // Hurray! This foreground target is currently dispatching a move event 2570 // that we can stream onto. Append the motion sample and resume dispatch. 2571 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2572#if DEBUG_BATCHING 2573 LOGD("Appended motion sample onto batch for most recently dispatched " 2574 "motion event for this device in the outbound queues. " 2575 "Attempting to stream the motion sample."); 2576#endif 2577 nsecs_t currentTime = now(); 2578 dispatchEventToCurrentInputTargetsLocked(currentTime, motionEntry, 2579 true /*resumeWithAppendedMotionSample*/); 2580 2581 runCommandsLockedInterruptible(); 2582 return; // done! 2583 } 2584 } 2585 2586NoBatchingOrStreaming:; 2587 } 2588 2589 // Just enqueue a new motion event. 2590 MotionEntry* newEntry = mAllocator.obtainMotionEntry(eventTime, 2591 deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2592 xPrecision, yPrecision, downTime, 2593 pointerCount, pointerIds, pointerCoords); 2594 2595 needWake = enqueueInboundEventLocked(newEntry); 2596 } // release lock 2597 2598 if (needWake) { 2599 mLooper->wake(); 2600 } 2601} 2602 2603void InputDispatcher::notifySwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, 2604 uint32_t policyFlags) { 2605#if DEBUG_INBOUND_EVENT_DETAILS 2606 LOGD("notifySwitch - switchCode=%d, switchValue=%d, policyFlags=0x%x", 2607 switchCode, switchValue, policyFlags); 2608#endif 2609 2610 policyFlags |= POLICY_FLAG_TRUSTED; 2611 mPolicy->notifySwitch(when, switchCode, switchValue, policyFlags); 2612} 2613 2614int32_t InputDispatcher::injectInputEvent(const InputEvent* event, 2615 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis) { 2616#if DEBUG_INBOUND_EVENT_DETAILS 2617 LOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2618 "syncMode=%d, timeoutMillis=%d", 2619 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis); 2620#endif 2621 2622 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2623 2624 uint32_t policyFlags = POLICY_FLAG_INJECTED; 2625 if (hasInjectionPermission(injectorPid, injectorUid)) { 2626 policyFlags |= POLICY_FLAG_TRUSTED; 2627 } 2628 2629 EventEntry* injectedEntry; 2630 switch (event->getType()) { 2631 case AINPUT_EVENT_TYPE_KEY: { 2632 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2633 int32_t action = keyEvent->getAction(); 2634 if (! validateKeyEvent(action)) { 2635 return INPUT_EVENT_INJECTION_FAILED; 2636 } 2637 2638 int32_t flags = keyEvent->getFlags(); 2639 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2640 policyFlags |= POLICY_FLAG_VIRTUAL; 2641 } 2642 2643 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2644 2645 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2646 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2647 } 2648 2649 mLock.lock(); 2650 injectedEntry = mAllocator.obtainKeyEntry(keyEvent->getEventTime(), 2651 keyEvent->getDeviceId(), keyEvent->getSource(), 2652 policyFlags, action, flags, 2653 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2654 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2655 break; 2656 } 2657 2658 case AINPUT_EVENT_TYPE_MOTION: { 2659 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2660 int32_t action = motionEvent->getAction(); 2661 size_t pointerCount = motionEvent->getPointerCount(); 2662 const int32_t* pointerIds = motionEvent->getPointerIds(); 2663 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2664 return INPUT_EVENT_INJECTION_FAILED; 2665 } 2666 2667 nsecs_t eventTime = motionEvent->getEventTime(); 2668 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2669 2670 mLock.lock(); 2671 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2672 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2673 MotionEntry* motionEntry = mAllocator.obtainMotionEntry(*sampleEventTimes, 2674 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2675 action, motionEvent->getFlags(), 2676 motionEvent->getMetaState(), motionEvent->getEdgeFlags(), 2677 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2678 motionEvent->getDownTime(), uint32_t(pointerCount), 2679 pointerIds, samplePointerCoords); 2680 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2681 sampleEventTimes += 1; 2682 samplePointerCoords += pointerCount; 2683 mAllocator.appendMotionSample(motionEntry, *sampleEventTimes, samplePointerCoords); 2684 } 2685 injectedEntry = motionEntry; 2686 break; 2687 } 2688 2689 default: 2690 LOGW("Cannot inject event of type %d", event->getType()); 2691 return INPUT_EVENT_INJECTION_FAILED; 2692 } 2693 2694 InjectionState* injectionState = mAllocator.obtainInjectionState(injectorPid, injectorUid); 2695 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2696 injectionState->injectionIsAsync = true; 2697 } 2698 2699 injectionState->refCount += 1; 2700 injectedEntry->injectionState = injectionState; 2701 2702 bool needWake = enqueueInboundEventLocked(injectedEntry); 2703 mLock.unlock(); 2704 2705 if (needWake) { 2706 mLooper->wake(); 2707 } 2708 2709 int32_t injectionResult; 2710 { // acquire lock 2711 AutoMutex _l(mLock); 2712 2713 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2714 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 2715 } else { 2716 for (;;) { 2717 injectionResult = injectionState->injectionResult; 2718 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 2719 break; 2720 } 2721 2722 nsecs_t remainingTimeout = endTime - now(); 2723 if (remainingTimeout <= 0) { 2724#if DEBUG_INJECTION 2725 LOGD("injectInputEvent - Timed out waiting for injection result " 2726 "to become available."); 2727#endif 2728 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2729 break; 2730 } 2731 2732 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 2733 } 2734 2735 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 2736 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 2737 while (injectionState->pendingForegroundDispatches != 0) { 2738#if DEBUG_INJECTION 2739 LOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 2740 injectionState->pendingForegroundDispatches); 2741#endif 2742 nsecs_t remainingTimeout = endTime - now(); 2743 if (remainingTimeout <= 0) { 2744#if DEBUG_INJECTION 2745 LOGD("injectInputEvent - Timed out waiting for pending foreground " 2746 "dispatches to finish."); 2747#endif 2748 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2749 break; 2750 } 2751 2752 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 2753 } 2754 } 2755 } 2756 2757 mAllocator.releaseInjectionState(injectionState); 2758 } // release lock 2759 2760#if DEBUG_INJECTION 2761 LOGD("injectInputEvent - Finished with result %d. " 2762 "injectorPid=%d, injectorUid=%d", 2763 injectionResult, injectorPid, injectorUid); 2764#endif 2765 2766 return injectionResult; 2767} 2768 2769bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 2770 return injectorUid == 0 2771 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 2772} 2773 2774void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 2775 InjectionState* injectionState = entry->injectionState; 2776 if (injectionState) { 2777#if DEBUG_INJECTION 2778 LOGD("Setting input event injection result to %d. " 2779 "injectorPid=%d, injectorUid=%d", 2780 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 2781#endif 2782 2783 if (injectionState->injectionIsAsync) { 2784 // Log the outcome since the injector did not wait for the injection result. 2785 switch (injectionResult) { 2786 case INPUT_EVENT_INJECTION_SUCCEEDED: 2787 LOGV("Asynchronous input event injection succeeded."); 2788 break; 2789 case INPUT_EVENT_INJECTION_FAILED: 2790 LOGW("Asynchronous input event injection failed."); 2791 break; 2792 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 2793 LOGW("Asynchronous input event injection permission denied."); 2794 break; 2795 case INPUT_EVENT_INJECTION_TIMED_OUT: 2796 LOGW("Asynchronous input event injection timed out."); 2797 break; 2798 } 2799 } 2800 2801 injectionState->injectionResult = injectionResult; 2802 mInjectionResultAvailableCondition.broadcast(); 2803 } 2804} 2805 2806void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2807 InjectionState* injectionState = entry->injectionState; 2808 if (injectionState) { 2809 injectionState->pendingForegroundDispatches += 1; 2810 } 2811} 2812 2813void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2814 InjectionState* injectionState = entry->injectionState; 2815 if (injectionState) { 2816 injectionState->pendingForegroundDispatches -= 1; 2817 2818 if (injectionState->pendingForegroundDispatches == 0) { 2819 mInjectionSyncFinishedCondition.broadcast(); 2820 } 2821 } 2822} 2823 2824const InputWindow* InputDispatcher::getWindowLocked(const sp<InputChannel>& inputChannel) { 2825 for (size_t i = 0; i < mWindows.size(); i++) { 2826 const InputWindow* window = & mWindows[i]; 2827 if (window->inputChannel == inputChannel) { 2828 return window; 2829 } 2830 } 2831 return NULL; 2832} 2833 2834void InputDispatcher::setInputWindows(const Vector<InputWindow>& inputWindows) { 2835#if DEBUG_FOCUS 2836 LOGD("setInputWindows"); 2837#endif 2838 { // acquire lock 2839 AutoMutex _l(mLock); 2840 2841 // Clear old window pointers. 2842 sp<InputChannel> oldFocusedWindowChannel; 2843 if (mFocusedWindow) { 2844 oldFocusedWindowChannel = mFocusedWindow->inputChannel; 2845 mFocusedWindow = NULL; 2846 } 2847 sp<InputChannel> oldLastHoverWindowChannel; 2848 if (mLastHoverWindow) { 2849 oldLastHoverWindowChannel = mLastHoverWindow->inputChannel; 2850 mLastHoverWindow = NULL; 2851 } 2852 2853 mWindows.clear(); 2854 2855 // Loop over new windows and rebuild the necessary window pointers for 2856 // tracking focus and touch. 2857 mWindows.appendVector(inputWindows); 2858 2859 size_t numWindows = mWindows.size(); 2860 for (size_t i = 0; i < numWindows; i++) { 2861 const InputWindow* window = & mWindows.itemAt(i); 2862 if (window->hasFocus) { 2863 mFocusedWindow = window; 2864 break; 2865 } 2866 } 2867 2868 if (oldFocusedWindowChannel != NULL) { 2869 if (!mFocusedWindow || oldFocusedWindowChannel != mFocusedWindow->inputChannel) { 2870#if DEBUG_FOCUS 2871 LOGD("Focus left window: %s", 2872 oldFocusedWindowChannel->getName().string()); 2873#endif 2874 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, 2875 "focus left window"); 2876 synthesizeCancelationEventsForInputChannelLocked(oldFocusedWindowChannel, options); 2877 oldFocusedWindowChannel.clear(); 2878 } 2879 } 2880 if (mFocusedWindow && oldFocusedWindowChannel == NULL) { 2881#if DEBUG_FOCUS 2882 LOGD("Focus entered window: %s", 2883 mFocusedWindow->inputChannel->getName().string()); 2884#endif 2885 } 2886 2887 for (size_t i = 0; i < mTouchState.windows.size(); ) { 2888 TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i); 2889 const InputWindow* window = getWindowLocked(touchedWindow.channel); 2890 if (window) { 2891 touchedWindow.window = window; 2892 i += 1; 2893 } else { 2894#if DEBUG_FOCUS 2895 LOGD("Touched window was removed: %s", touchedWindow.channel->getName().string()); 2896#endif 2897 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 2898 "touched window was removed"); 2899 synthesizeCancelationEventsForInputChannelLocked(touchedWindow.channel, options); 2900 mTouchState.windows.removeAt(i); 2901 } 2902 } 2903 2904 // Recover the last hovered window. 2905 if (oldLastHoverWindowChannel != NULL) { 2906 mLastHoverWindow = getWindowLocked(oldLastHoverWindowChannel); 2907 oldLastHoverWindowChannel.clear(); 2908 } 2909 2910#if DEBUG_FOCUS 2911 //logDispatchStateLocked(); 2912#endif 2913 } // release lock 2914 2915 // Wake up poll loop since it may need to make new input dispatching choices. 2916 mLooper->wake(); 2917} 2918 2919void InputDispatcher::setFocusedApplication(const InputApplication* inputApplication) { 2920#if DEBUG_FOCUS 2921 LOGD("setFocusedApplication"); 2922#endif 2923 { // acquire lock 2924 AutoMutex _l(mLock); 2925 2926 releaseFocusedApplicationLocked(); 2927 2928 if (inputApplication) { 2929 mFocusedApplicationStorage = *inputApplication; 2930 mFocusedApplication = & mFocusedApplicationStorage; 2931 } 2932 2933#if DEBUG_FOCUS 2934 //logDispatchStateLocked(); 2935#endif 2936 } // release lock 2937 2938 // Wake up poll loop since it may need to make new input dispatching choices. 2939 mLooper->wake(); 2940} 2941 2942void InputDispatcher::releaseFocusedApplicationLocked() { 2943 if (mFocusedApplication) { 2944 mFocusedApplication = NULL; 2945 mFocusedApplicationStorage.inputApplicationHandle.clear(); 2946 } 2947} 2948 2949void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 2950#if DEBUG_FOCUS 2951 LOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 2952#endif 2953 2954 bool changed; 2955 { // acquire lock 2956 AutoMutex _l(mLock); 2957 2958 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 2959 if (mDispatchFrozen && !frozen) { 2960 resetANRTimeoutsLocked(); 2961 } 2962 2963 if (mDispatchEnabled && !enabled) { 2964 resetAndDropEverythingLocked("dispatcher is being disabled"); 2965 } 2966 2967 mDispatchEnabled = enabled; 2968 mDispatchFrozen = frozen; 2969 changed = true; 2970 } else { 2971 changed = false; 2972 } 2973 2974#if DEBUG_FOCUS 2975 //logDispatchStateLocked(); 2976#endif 2977 } // release lock 2978 2979 if (changed) { 2980 // Wake up poll loop since it may need to make new input dispatching choices. 2981 mLooper->wake(); 2982 } 2983} 2984 2985bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 2986 const sp<InputChannel>& toChannel) { 2987#if DEBUG_FOCUS 2988 LOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 2989 fromChannel->getName().string(), toChannel->getName().string()); 2990#endif 2991 { // acquire lock 2992 AutoMutex _l(mLock); 2993 2994 const InputWindow* fromWindow = getWindowLocked(fromChannel); 2995 const InputWindow* toWindow = getWindowLocked(toChannel); 2996 if (! fromWindow || ! toWindow) { 2997#if DEBUG_FOCUS 2998 LOGD("Cannot transfer focus because from or to window not found."); 2999#endif 3000 return false; 3001 } 3002 if (fromWindow == toWindow) { 3003#if DEBUG_FOCUS 3004 LOGD("Trivial transfer to same window."); 3005#endif 3006 return true; 3007 } 3008 3009 bool found = false; 3010 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3011 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3012 if (touchedWindow.window == fromWindow) { 3013 int32_t oldTargetFlags = touchedWindow.targetFlags; 3014 BitSet32 pointerIds = touchedWindow.pointerIds; 3015 3016 mTouchState.windows.removeAt(i); 3017 3018 int32_t newTargetFlags = oldTargetFlags 3019 & (InputTarget::FLAG_FOREGROUND 3020 | InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS); 3021 mTouchState.addOrUpdateWindow(toWindow, newTargetFlags, pointerIds); 3022 3023 found = true; 3024 break; 3025 } 3026 } 3027 3028 if (! found) { 3029#if DEBUG_FOCUS 3030 LOGD("Focus transfer failed because from window did not have focus."); 3031#endif 3032 return false; 3033 } 3034 3035 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 3036 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 3037 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 3038 sp<Connection> fromConnection = mConnectionsByReceiveFd.valueAt(fromConnectionIndex); 3039 sp<Connection> toConnection = mConnectionsByReceiveFd.valueAt(toConnectionIndex); 3040 3041 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 3042 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 3043 "transferring touch focus from this window to another window"); 3044 synthesizeCancelationEventsForConnectionLocked(fromConnection, options); 3045 } 3046 3047#if DEBUG_FOCUS 3048 logDispatchStateLocked(); 3049#endif 3050 } // release lock 3051 3052 // Wake up poll loop since it may need to make new input dispatching choices. 3053 mLooper->wake(); 3054 return true; 3055} 3056 3057void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 3058#if DEBUG_FOCUS 3059 LOGD("Resetting and dropping all events (%s).", reason); 3060#endif 3061 3062 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason); 3063 synthesizeCancelationEventsForAllConnectionsLocked(options); 3064 3065 resetKeyRepeatLocked(); 3066 releasePendingEventLocked(); 3067 drainInboundQueueLocked(); 3068 resetTargetsLocked(); 3069 3070 mTouchState.reset(); 3071} 3072 3073void InputDispatcher::logDispatchStateLocked() { 3074 String8 dump; 3075 dumpDispatchStateLocked(dump); 3076 3077 char* text = dump.lockBuffer(dump.size()); 3078 char* start = text; 3079 while (*start != '\0') { 3080 char* end = strchr(start, '\n'); 3081 if (*end == '\n') { 3082 *(end++) = '\0'; 3083 } 3084 LOGD("%s", start); 3085 start = end; 3086 } 3087} 3088 3089void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 3090 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 3091 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 3092 3093 if (mFocusedApplication) { 3094 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 3095 mFocusedApplication->name.string(), 3096 mFocusedApplication->dispatchingTimeout / 1000000.0); 3097 } else { 3098 dump.append(INDENT "FocusedApplication: <null>\n"); 3099 } 3100 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 3101 mFocusedWindow != NULL ? mFocusedWindow->name.string() : "<null>"); 3102 3103 dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down)); 3104 dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split)); 3105 dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId); 3106 dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source); 3107 if (!mTouchState.windows.isEmpty()) { 3108 dump.append(INDENT "TouchedWindows:\n"); 3109 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3110 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3111 dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 3112 i, touchedWindow.window->name.string(), touchedWindow.pointerIds.value, 3113 touchedWindow.targetFlags); 3114 } 3115 } else { 3116 dump.append(INDENT "TouchedWindows: <none>\n"); 3117 } 3118 3119 if (!mWindows.isEmpty()) { 3120 dump.append(INDENT "Windows:\n"); 3121 for (size_t i = 0; i < mWindows.size(); i++) { 3122 const InputWindow& window = mWindows[i]; 3123 dump.appendFormat(INDENT2 "%d: name='%s', paused=%s, hasFocus=%s, hasWallpaper=%s, " 3124 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 3125 "frame=[%d,%d][%d,%d], " 3126 "touchableRegion=", 3127 i, window.name.string(), 3128 toString(window.paused), 3129 toString(window.hasFocus), 3130 toString(window.hasWallpaper), 3131 toString(window.visible), 3132 toString(window.canReceiveKeys), 3133 window.layoutParamsFlags, window.layoutParamsType, 3134 window.layer, 3135 window.frameLeft, window.frameTop, 3136 window.frameRight, window.frameBottom); 3137 dumpRegion(dump, window.touchableRegion); 3138 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 3139 window.ownerPid, window.ownerUid, 3140 window.dispatchingTimeout / 1000000.0); 3141 } 3142 } else { 3143 dump.append(INDENT "Windows: <none>\n"); 3144 } 3145 3146 if (!mMonitoringChannels.isEmpty()) { 3147 dump.append(INDENT "MonitoringChannels:\n"); 3148 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3149 const sp<InputChannel>& channel = mMonitoringChannels[i]; 3150 dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string()); 3151 } 3152 } else { 3153 dump.append(INDENT "MonitoringChannels: <none>\n"); 3154 } 3155 3156 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 3157 3158 if (!mActiveConnections.isEmpty()) { 3159 dump.append(INDENT "ActiveConnections:\n"); 3160 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3161 const Connection* connection = mActiveConnections[i]; 3162 dump.appendFormat(INDENT2 "%d: '%s', status=%s, outboundQueueLength=%u, " 3163 "inputState.isNeutral=%s\n", 3164 i, connection->getInputChannelName(), connection->getStatusLabel(), 3165 connection->outboundQueue.count(), 3166 toString(connection->inputState.isNeutral())); 3167 } 3168 } else { 3169 dump.append(INDENT "ActiveConnections: <none>\n"); 3170 } 3171 3172 if (isAppSwitchPendingLocked()) { 3173 dump.appendFormat(INDENT "AppSwitch: pending, due in %01.1fms\n", 3174 (mAppSwitchDueTime - now()) / 1000000.0); 3175 } else { 3176 dump.append(INDENT "AppSwitch: not pending\n"); 3177 } 3178} 3179 3180status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 3181 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3182#if DEBUG_REGISTRATION 3183 LOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3184 toString(monitor)); 3185#endif 3186 3187 { // acquire lock 3188 AutoMutex _l(mLock); 3189 3190 if (getConnectionIndexLocked(inputChannel) >= 0) { 3191 LOGW("Attempted to register already registered input channel '%s'", 3192 inputChannel->getName().string()); 3193 return BAD_VALUE; 3194 } 3195 3196 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle); 3197 status_t status = connection->initialize(); 3198 if (status) { 3199 LOGE("Failed to initialize input publisher for input channel '%s', status=%d", 3200 inputChannel->getName().string(), status); 3201 return status; 3202 } 3203 3204 int32_t receiveFd = inputChannel->getReceivePipeFd(); 3205 mConnectionsByReceiveFd.add(receiveFd, connection); 3206 3207 if (monitor) { 3208 mMonitoringChannels.push(inputChannel); 3209 } 3210 3211 mLooper->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3212 3213 runCommandsLockedInterruptible(); 3214 } // release lock 3215 return OK; 3216} 3217 3218status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3219#if DEBUG_REGISTRATION 3220 LOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3221#endif 3222 3223 { // acquire lock 3224 AutoMutex _l(mLock); 3225 3226 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3227 if (connectionIndex < 0) { 3228 LOGW("Attempted to unregister already unregistered input channel '%s'", 3229 inputChannel->getName().string()); 3230 return BAD_VALUE; 3231 } 3232 3233 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3234 mConnectionsByReceiveFd.removeItemsAt(connectionIndex); 3235 3236 connection->status = Connection::STATUS_ZOMBIE; 3237 3238 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3239 if (mMonitoringChannels[i] == inputChannel) { 3240 mMonitoringChannels.removeAt(i); 3241 break; 3242 } 3243 } 3244 3245 mLooper->removeFd(inputChannel->getReceivePipeFd()); 3246 3247 nsecs_t currentTime = now(); 3248 abortBrokenDispatchCycleLocked(currentTime, connection); 3249 3250 runCommandsLockedInterruptible(); 3251 } // release lock 3252 3253 // Wake the poll loop because removing the connection may have changed the current 3254 // synchronization state. 3255 mLooper->wake(); 3256 return OK; 3257} 3258 3259ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3260 ssize_t connectionIndex = mConnectionsByReceiveFd.indexOfKey(inputChannel->getReceivePipeFd()); 3261 if (connectionIndex >= 0) { 3262 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3263 if (connection->inputChannel.get() == inputChannel.get()) { 3264 return connectionIndex; 3265 } 3266 } 3267 3268 return -1; 3269} 3270 3271void InputDispatcher::activateConnectionLocked(Connection* connection) { 3272 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3273 if (mActiveConnections.itemAt(i) == connection) { 3274 return; 3275 } 3276 } 3277 mActiveConnections.add(connection); 3278} 3279 3280void InputDispatcher::deactivateConnectionLocked(Connection* connection) { 3281 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3282 if (mActiveConnections.itemAt(i) == connection) { 3283 mActiveConnections.removeAt(i); 3284 return; 3285 } 3286 } 3287} 3288 3289void InputDispatcher::onDispatchCycleStartedLocked( 3290 nsecs_t currentTime, const sp<Connection>& connection) { 3291} 3292 3293void InputDispatcher::onDispatchCycleFinishedLocked( 3294 nsecs_t currentTime, const sp<Connection>& connection, bool handled) { 3295 CommandEntry* commandEntry = postCommandLocked( 3296 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3297 commandEntry->connection = connection; 3298 commandEntry->handled = handled; 3299} 3300 3301void InputDispatcher::onDispatchCycleBrokenLocked( 3302 nsecs_t currentTime, const sp<Connection>& connection) { 3303 LOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3304 connection->getInputChannelName()); 3305 3306 CommandEntry* commandEntry = postCommandLocked( 3307 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3308 commandEntry->connection = connection; 3309} 3310 3311void InputDispatcher::onANRLocked( 3312 nsecs_t currentTime, const InputApplication* application, const InputWindow* window, 3313 nsecs_t eventTime, nsecs_t waitStartTime) { 3314 LOGI("Application is not responding: %s. " 3315 "%01.1fms since event, %01.1fms since wait started", 3316 getApplicationWindowLabelLocked(application, window).string(), 3317 (currentTime - eventTime) / 1000000.0, 3318 (currentTime - waitStartTime) / 1000000.0); 3319 3320 CommandEntry* commandEntry = postCommandLocked( 3321 & InputDispatcher::doNotifyANRLockedInterruptible); 3322 if (application) { 3323 commandEntry->inputApplicationHandle = application->inputApplicationHandle; 3324 } 3325 if (window) { 3326 commandEntry->inputWindowHandle = window->inputWindowHandle; 3327 commandEntry->inputChannel = window->inputChannel; 3328 } 3329} 3330 3331void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3332 CommandEntry* commandEntry) { 3333 mLock.unlock(); 3334 3335 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3336 3337 mLock.lock(); 3338} 3339 3340void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3341 CommandEntry* commandEntry) { 3342 sp<Connection> connection = commandEntry->connection; 3343 3344 if (connection->status != Connection::STATUS_ZOMBIE) { 3345 mLock.unlock(); 3346 3347 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3348 3349 mLock.lock(); 3350 } 3351} 3352 3353void InputDispatcher::doNotifyANRLockedInterruptible( 3354 CommandEntry* commandEntry) { 3355 mLock.unlock(); 3356 3357 nsecs_t newTimeout = mPolicy->notifyANR( 3358 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle); 3359 3360 mLock.lock(); 3361 3362 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel); 3363} 3364 3365void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3366 CommandEntry* commandEntry) { 3367 KeyEntry* entry = commandEntry->keyEntry; 3368 3369 KeyEvent event; 3370 initializeKeyEvent(&event, entry); 3371 3372 mLock.unlock(); 3373 3374 bool consumed = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3375 &event, entry->policyFlags); 3376 3377 mLock.lock(); 3378 3379 entry->interceptKeyResult = consumed 3380 ? KeyEntry::INTERCEPT_KEY_RESULT_SKIP 3381 : KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3382 mAllocator.releaseKeyEntry(entry); 3383} 3384 3385void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3386 CommandEntry* commandEntry) { 3387 sp<Connection> connection = commandEntry->connection; 3388 bool handled = commandEntry->handled; 3389 3390 if (!connection->outboundQueue.isEmpty()) { 3391 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 3392 if (dispatchEntry->inProgress 3393 && dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3394 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3395 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3396 // Get the fallback key state. 3397 // Clear it out after dispatching the UP. 3398 int32_t originalKeyCode = keyEntry->keyCode; 3399 int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode); 3400 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3401 connection->inputState.removeFallbackKey(originalKeyCode); 3402 } 3403 3404 if (handled || !dispatchEntry->hasForegroundTarget()) { 3405 // If the application handles the original key for which we previously 3406 // generated a fallback or if the window is not a foreground window, 3407 // then cancel the associated fallback key, if any. 3408 if (fallbackKeyCode != -1) { 3409 if (fallbackKeyCode != AKEYCODE_UNKNOWN) { 3410 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3411 "application handled the original non-fallback key " 3412 "or is no longer a foreground target, " 3413 "canceling previously dispatched fallback key"); 3414 options.keyCode = fallbackKeyCode; 3415 synthesizeCancelationEventsForConnectionLocked(connection, options); 3416 } 3417 connection->inputState.removeFallbackKey(originalKeyCode); 3418 } 3419 } else { 3420 // If the application did not handle a non-fallback key, first check 3421 // that we are in a good state to perform unhandled key event processing 3422 // Then ask the policy what to do with it. 3423 bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN 3424 && keyEntry->repeatCount == 0; 3425 if (fallbackKeyCode == -1 && !initialDown) { 3426#if DEBUG_OUTBOUND_EVENT_DETAILS 3427 LOGD("Unhandled key event: Skipping unhandled key event processing " 3428 "since this is not an initial down. " 3429 "keyCode=%d, action=%d, repeatCount=%d", 3430 originalKeyCode, keyEntry->action, keyEntry->repeatCount); 3431#endif 3432 goto SkipFallback; 3433 } 3434 3435 // Dispatch the unhandled key to the policy. 3436#if DEBUG_OUTBOUND_EVENT_DETAILS 3437 LOGD("Unhandled key event: Asking policy to perform fallback action. " 3438 "keyCode=%d, action=%d, repeatCount=%d", 3439 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3440#endif 3441 KeyEvent event; 3442 initializeKeyEvent(&event, keyEntry); 3443 3444 mLock.unlock(); 3445 3446 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3447 &event, keyEntry->policyFlags, &event); 3448 3449 mLock.lock(); 3450 3451 if (connection->status != Connection::STATUS_NORMAL) { 3452 connection->inputState.removeFallbackKey(originalKeyCode); 3453 return; 3454 } 3455 3456 assert(connection->outboundQueue.headSentinel.next == dispatchEntry); 3457 3458 // Latch the fallback keycode for this key on an initial down. 3459 // The fallback keycode cannot change at any other point in the lifecycle. 3460 if (initialDown) { 3461 if (fallback) { 3462 fallbackKeyCode = event.getKeyCode(); 3463 } else { 3464 fallbackKeyCode = AKEYCODE_UNKNOWN; 3465 } 3466 connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode); 3467 } 3468 3469 assert(fallbackKeyCode != -1); 3470 3471 // Cancel the fallback key if the policy decides not to send it anymore. 3472 // We will continue to dispatch the key to the policy but we will no 3473 // longer dispatch a fallback key to the application. 3474 if (fallbackKeyCode != AKEYCODE_UNKNOWN 3475 && (!fallback || fallbackKeyCode != event.getKeyCode())) { 3476#if DEBUG_OUTBOUND_EVENT_DETAILS 3477 if (fallback) { 3478 LOGD("Unhandled key event: Policy requested to send key %d" 3479 "as a fallback for %d, but on the DOWN it had requested " 3480 "to send %d instead. Fallback canceled.", 3481 event.getKeyCode(), originalKeyCode, fallbackKeyCode); 3482 } else { 3483 LOGD("Unhandled key event: Policy did not request fallback for %d," 3484 "but on the DOWN it had requested to send %d. " 3485 "Fallback canceled.", 3486 originalKeyCode, fallbackKeyCode); 3487 } 3488#endif 3489 3490 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3491 "canceling fallback, policy no longer desires it"); 3492 options.keyCode = fallbackKeyCode; 3493 synthesizeCancelationEventsForConnectionLocked(connection, options); 3494 3495 fallback = false; 3496 fallbackKeyCode = AKEYCODE_UNKNOWN; 3497 if (keyEntry->action != AKEY_EVENT_ACTION_UP) { 3498 connection->inputState.setFallbackKey(originalKeyCode, 3499 fallbackKeyCode); 3500 } 3501 } 3502 3503#if DEBUG_OUTBOUND_EVENT_DETAILS 3504 { 3505 String8 msg; 3506 const KeyedVector<int32_t, int32_t>& fallbackKeys = 3507 connection->inputState.getFallbackKeys(); 3508 for (size_t i = 0; i < fallbackKeys.size(); i++) { 3509 msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i), 3510 fallbackKeys.valueAt(i)); 3511 } 3512 LOGD("Unhandled key event: %d currently tracked fallback keys%s.", 3513 fallbackKeys.size(), msg.string()); 3514 } 3515#endif 3516 3517 if (fallback) { 3518 // Restart the dispatch cycle using the fallback key. 3519 keyEntry->eventTime = event.getEventTime(); 3520 keyEntry->deviceId = event.getDeviceId(); 3521 keyEntry->source = event.getSource(); 3522 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3523 keyEntry->keyCode = fallbackKeyCode; 3524 keyEntry->scanCode = event.getScanCode(); 3525 keyEntry->metaState = event.getMetaState(); 3526 keyEntry->repeatCount = event.getRepeatCount(); 3527 keyEntry->downTime = event.getDownTime(); 3528 keyEntry->syntheticRepeat = false; 3529 3530#if DEBUG_OUTBOUND_EVENT_DETAILS 3531 LOGD("Unhandled key event: Dispatching fallback key. " 3532 "originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x", 3533 originalKeyCode, fallbackKeyCode, keyEntry->metaState); 3534#endif 3535 3536 dispatchEntry->inProgress = false; 3537 startDispatchCycleLocked(now(), connection); 3538 return; 3539 } else { 3540#if DEBUG_OUTBOUND_EVENT_DETAILS 3541 LOGD("Unhandled key event: No fallback key."); 3542#endif 3543 } 3544 } 3545 } 3546 } 3547 } 3548 3549SkipFallback: 3550 startNextDispatchCycleLocked(now(), connection); 3551} 3552 3553void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3554 mLock.unlock(); 3555 3556 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3557 3558 mLock.lock(); 3559} 3560 3561void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3562 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3563 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3564 entry->downTime, entry->eventTime); 3565} 3566 3567void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3568 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3569 // TODO Write some statistics about how long we spend waiting. 3570} 3571 3572void InputDispatcher::dump(String8& dump) { 3573 dump.append("Input Dispatcher State:\n"); 3574 dumpDispatchStateLocked(dump); 3575} 3576 3577 3578// --- InputDispatcher::Queue --- 3579 3580template <typename T> 3581uint32_t InputDispatcher::Queue<T>::count() const { 3582 uint32_t result = 0; 3583 for (const T* entry = headSentinel.next; entry != & tailSentinel; entry = entry->next) { 3584 result += 1; 3585 } 3586 return result; 3587} 3588 3589 3590// --- InputDispatcher::Allocator --- 3591 3592InputDispatcher::Allocator::Allocator() { 3593} 3594 3595InputDispatcher::InjectionState* 3596InputDispatcher::Allocator::obtainInjectionState(int32_t injectorPid, int32_t injectorUid) { 3597 InjectionState* injectionState = mInjectionStatePool.alloc(); 3598 injectionState->refCount = 1; 3599 injectionState->injectorPid = injectorPid; 3600 injectionState->injectorUid = injectorUid; 3601 injectionState->injectionIsAsync = false; 3602 injectionState->injectionResult = INPUT_EVENT_INJECTION_PENDING; 3603 injectionState->pendingForegroundDispatches = 0; 3604 return injectionState; 3605} 3606 3607void InputDispatcher::Allocator::initializeEventEntry(EventEntry* entry, int32_t type, 3608 nsecs_t eventTime, uint32_t policyFlags) { 3609 entry->type = type; 3610 entry->refCount = 1; 3611 entry->dispatchInProgress = false; 3612 entry->eventTime = eventTime; 3613 entry->policyFlags = policyFlags; 3614 entry->injectionState = NULL; 3615} 3616 3617void InputDispatcher::Allocator::releaseEventEntryInjectionState(EventEntry* entry) { 3618 if (entry->injectionState) { 3619 releaseInjectionState(entry->injectionState); 3620 entry->injectionState = NULL; 3621 } 3622} 3623 3624InputDispatcher::ConfigurationChangedEntry* 3625InputDispatcher::Allocator::obtainConfigurationChangedEntry(nsecs_t eventTime) { 3626 ConfigurationChangedEntry* entry = mConfigurationChangeEntryPool.alloc(); 3627 initializeEventEntry(entry, EventEntry::TYPE_CONFIGURATION_CHANGED, eventTime, 0); 3628 return entry; 3629} 3630 3631InputDispatcher::KeyEntry* InputDispatcher::Allocator::obtainKeyEntry(nsecs_t eventTime, 3632 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3633 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3634 int32_t repeatCount, nsecs_t downTime) { 3635 KeyEntry* entry = mKeyEntryPool.alloc(); 3636 initializeEventEntry(entry, EventEntry::TYPE_KEY, eventTime, policyFlags); 3637 3638 entry->deviceId = deviceId; 3639 entry->source = source; 3640 entry->action = action; 3641 entry->flags = flags; 3642 entry->keyCode = keyCode; 3643 entry->scanCode = scanCode; 3644 entry->metaState = metaState; 3645 entry->repeatCount = repeatCount; 3646 entry->downTime = downTime; 3647 entry->syntheticRepeat = false; 3648 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3649 return entry; 3650} 3651 3652InputDispatcher::MotionEntry* InputDispatcher::Allocator::obtainMotionEntry(nsecs_t eventTime, 3653 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 3654 int32_t metaState, int32_t edgeFlags, float xPrecision, float yPrecision, 3655 nsecs_t downTime, uint32_t pointerCount, 3656 const int32_t* pointerIds, const PointerCoords* pointerCoords) { 3657 MotionEntry* entry = mMotionEntryPool.alloc(); 3658 initializeEventEntry(entry, EventEntry::TYPE_MOTION, eventTime, policyFlags); 3659 3660 entry->eventTime = eventTime; 3661 entry->deviceId = deviceId; 3662 entry->source = source; 3663 entry->action = action; 3664 entry->flags = flags; 3665 entry->metaState = metaState; 3666 entry->edgeFlags = edgeFlags; 3667 entry->xPrecision = xPrecision; 3668 entry->yPrecision = yPrecision; 3669 entry->downTime = downTime; 3670 entry->pointerCount = pointerCount; 3671 entry->firstSample.eventTime = eventTime; 3672 entry->firstSample.next = NULL; 3673 entry->lastSample = & entry->firstSample; 3674 for (uint32_t i = 0; i < pointerCount; i++) { 3675 entry->pointerIds[i] = pointerIds[i]; 3676 entry->firstSample.pointerCoords[i].copyFrom(pointerCoords[i]); 3677 } 3678 return entry; 3679} 3680 3681InputDispatcher::DispatchEntry* InputDispatcher::Allocator::obtainDispatchEntry( 3682 EventEntry* eventEntry, 3683 int32_t targetFlags, float xOffset, float yOffset) { 3684 DispatchEntry* entry = mDispatchEntryPool.alloc(); 3685 entry->eventEntry = eventEntry; 3686 eventEntry->refCount += 1; 3687 entry->targetFlags = targetFlags; 3688 entry->xOffset = xOffset; 3689 entry->yOffset = yOffset; 3690 entry->inProgress = false; 3691 entry->headMotionSample = NULL; 3692 entry->tailMotionSample = NULL; 3693 return entry; 3694} 3695 3696InputDispatcher::CommandEntry* InputDispatcher::Allocator::obtainCommandEntry(Command command) { 3697 CommandEntry* entry = mCommandEntryPool.alloc(); 3698 entry->command = command; 3699 return entry; 3700} 3701 3702void InputDispatcher::Allocator::releaseInjectionState(InjectionState* injectionState) { 3703 injectionState->refCount -= 1; 3704 if (injectionState->refCount == 0) { 3705 mInjectionStatePool.free(injectionState); 3706 } else { 3707 assert(injectionState->refCount > 0); 3708 } 3709} 3710 3711void InputDispatcher::Allocator::releaseEventEntry(EventEntry* entry) { 3712 switch (entry->type) { 3713 case EventEntry::TYPE_CONFIGURATION_CHANGED: 3714 releaseConfigurationChangedEntry(static_cast<ConfigurationChangedEntry*>(entry)); 3715 break; 3716 case EventEntry::TYPE_KEY: 3717 releaseKeyEntry(static_cast<KeyEntry*>(entry)); 3718 break; 3719 case EventEntry::TYPE_MOTION: 3720 releaseMotionEntry(static_cast<MotionEntry*>(entry)); 3721 break; 3722 default: 3723 assert(false); 3724 break; 3725 } 3726} 3727 3728void InputDispatcher::Allocator::releaseConfigurationChangedEntry( 3729 ConfigurationChangedEntry* entry) { 3730 entry->refCount -= 1; 3731 if (entry->refCount == 0) { 3732 releaseEventEntryInjectionState(entry); 3733 mConfigurationChangeEntryPool.free(entry); 3734 } else { 3735 assert(entry->refCount > 0); 3736 } 3737} 3738 3739void InputDispatcher::Allocator::releaseKeyEntry(KeyEntry* entry) { 3740 entry->refCount -= 1; 3741 if (entry->refCount == 0) { 3742 releaseEventEntryInjectionState(entry); 3743 mKeyEntryPool.free(entry); 3744 } else { 3745 assert(entry->refCount > 0); 3746 } 3747} 3748 3749void InputDispatcher::Allocator::releaseMotionEntry(MotionEntry* entry) { 3750 entry->refCount -= 1; 3751 if (entry->refCount == 0) { 3752 releaseEventEntryInjectionState(entry); 3753 for (MotionSample* sample = entry->firstSample.next; sample != NULL; ) { 3754 MotionSample* next = sample->next; 3755 mMotionSamplePool.free(sample); 3756 sample = next; 3757 } 3758 mMotionEntryPool.free(entry); 3759 } else { 3760 assert(entry->refCount > 0); 3761 } 3762} 3763 3764void InputDispatcher::Allocator::freeMotionSample(MotionSample* sample) { 3765 mMotionSamplePool.free(sample); 3766} 3767 3768void InputDispatcher::Allocator::releaseDispatchEntry(DispatchEntry* entry) { 3769 releaseEventEntry(entry->eventEntry); 3770 mDispatchEntryPool.free(entry); 3771} 3772 3773void InputDispatcher::Allocator::releaseCommandEntry(CommandEntry* entry) { 3774 mCommandEntryPool.free(entry); 3775} 3776 3777void InputDispatcher::Allocator::appendMotionSample(MotionEntry* motionEntry, 3778 nsecs_t eventTime, const PointerCoords* pointerCoords) { 3779 MotionSample* sample = mMotionSamplePool.alloc(); 3780 sample->eventTime = eventTime; 3781 uint32_t pointerCount = motionEntry->pointerCount; 3782 for (uint32_t i = 0; i < pointerCount; i++) { 3783 sample->pointerCoords[i].copyFrom(pointerCoords[i]); 3784 } 3785 3786 sample->next = NULL; 3787 motionEntry->lastSample->next = sample; 3788 motionEntry->lastSample = sample; 3789} 3790 3791void InputDispatcher::Allocator::recycleKeyEntry(KeyEntry* keyEntry) { 3792 releaseEventEntryInjectionState(keyEntry); 3793 3794 keyEntry->dispatchInProgress = false; 3795 keyEntry->syntheticRepeat = false; 3796 keyEntry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3797} 3798 3799 3800// --- InputDispatcher::MotionEntry --- 3801 3802uint32_t InputDispatcher::MotionEntry::countSamples() const { 3803 uint32_t count = 1; 3804 for (MotionSample* sample = firstSample.next; sample != NULL; sample = sample->next) { 3805 count += 1; 3806 } 3807 return count; 3808} 3809 3810 3811// --- InputDispatcher::InputState --- 3812 3813InputDispatcher::InputState::InputState() { 3814} 3815 3816InputDispatcher::InputState::~InputState() { 3817} 3818 3819bool InputDispatcher::InputState::isNeutral() const { 3820 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 3821} 3822 3823void InputDispatcher::InputState::trackEvent(const EventEntry* entry, int32_t action) { 3824 switch (entry->type) { 3825 case EventEntry::TYPE_KEY: 3826 trackKey(static_cast<const KeyEntry*>(entry), action); 3827 break; 3828 3829 case EventEntry::TYPE_MOTION: 3830 trackMotion(static_cast<const MotionEntry*>(entry), action); 3831 break; 3832 } 3833} 3834 3835void InputDispatcher::InputState::trackKey(const KeyEntry* entry, int32_t action) { 3836 if (action == AKEY_EVENT_ACTION_UP 3837 && (entry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3838 for (size_t i = 0; i < mFallbackKeys.size(); ) { 3839 if (mFallbackKeys.valueAt(i) == entry->keyCode) { 3840 mFallbackKeys.removeItemsAt(i); 3841 } else { 3842 i += 1; 3843 } 3844 } 3845 } 3846 3847 for (size_t i = 0; i < mKeyMementos.size(); i++) { 3848 KeyMemento& memento = mKeyMementos.editItemAt(i); 3849 if (memento.deviceId == entry->deviceId 3850 && memento.source == entry->source 3851 && memento.keyCode == entry->keyCode 3852 && memento.scanCode == entry->scanCode) { 3853 switch (action) { 3854 case AKEY_EVENT_ACTION_UP: 3855 mKeyMementos.removeAt(i); 3856 return; 3857 3858 case AKEY_EVENT_ACTION_DOWN: 3859 mKeyMementos.removeAt(i); 3860 goto Found; 3861 3862 default: 3863 return; 3864 } 3865 } 3866 } 3867 3868Found: 3869 if (action == AKEY_EVENT_ACTION_DOWN) { 3870 mKeyMementos.push(); 3871 KeyMemento& memento = mKeyMementos.editTop(); 3872 memento.deviceId = entry->deviceId; 3873 memento.source = entry->source; 3874 memento.keyCode = entry->keyCode; 3875 memento.scanCode = entry->scanCode; 3876 memento.flags = entry->flags; 3877 memento.downTime = entry->downTime; 3878 } 3879} 3880 3881void InputDispatcher::InputState::trackMotion(const MotionEntry* entry, int32_t action) { 3882 int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK; 3883 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3884 MotionMemento& memento = mMotionMementos.editItemAt(i); 3885 if (memento.deviceId == entry->deviceId 3886 && memento.source == entry->source) { 3887 switch (actionMasked) { 3888 case AMOTION_EVENT_ACTION_UP: 3889 case AMOTION_EVENT_ACTION_CANCEL: 3890 case AMOTION_EVENT_ACTION_HOVER_ENTER: 3891 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3892 case AMOTION_EVENT_ACTION_HOVER_EXIT: 3893 mMotionMementos.removeAt(i); 3894 return; 3895 3896 case AMOTION_EVENT_ACTION_DOWN: 3897 mMotionMementos.removeAt(i); 3898 goto Found; 3899 3900 case AMOTION_EVENT_ACTION_POINTER_UP: 3901 case AMOTION_EVENT_ACTION_POINTER_DOWN: 3902 case AMOTION_EVENT_ACTION_MOVE: 3903 memento.setPointers(entry); 3904 return; 3905 3906 default: 3907 return; 3908 } 3909 } 3910 } 3911 3912Found: 3913 switch (actionMasked) { 3914 case AMOTION_EVENT_ACTION_DOWN: 3915 case AMOTION_EVENT_ACTION_HOVER_ENTER: 3916 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3917 case AMOTION_EVENT_ACTION_HOVER_EXIT: 3918 mMotionMementos.push(); 3919 MotionMemento& memento = mMotionMementos.editTop(); 3920 memento.deviceId = entry->deviceId; 3921 memento.source = entry->source; 3922 memento.xPrecision = entry->xPrecision; 3923 memento.yPrecision = entry->yPrecision; 3924 memento.downTime = entry->downTime; 3925 memento.setPointers(entry); 3926 memento.hovering = actionMasked != AMOTION_EVENT_ACTION_DOWN; 3927 } 3928} 3929 3930void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 3931 pointerCount = entry->pointerCount; 3932 for (uint32_t i = 0; i < entry->pointerCount; i++) { 3933 pointerIds[i] = entry->pointerIds[i]; 3934 pointerCoords[i].copyFrom(entry->lastSample->pointerCoords[i]); 3935 } 3936} 3937 3938void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 3939 Allocator* allocator, Vector<EventEntry*>& outEvents, 3940 const CancelationOptions& options) { 3941 for (size_t i = 0; i < mKeyMementos.size(); ) { 3942 const KeyMemento& memento = mKeyMementos.itemAt(i); 3943 if (shouldCancelKey(memento, options)) { 3944 outEvents.push(allocator->obtainKeyEntry(currentTime, 3945 memento.deviceId, memento.source, 0, 3946 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 3947 memento.keyCode, memento.scanCode, 0, 0, memento.downTime)); 3948 mKeyMementos.removeAt(i); 3949 } else { 3950 i += 1; 3951 } 3952 } 3953 3954 for (size_t i = 0; i < mMotionMementos.size(); ) { 3955 const MotionMemento& memento = mMotionMementos.itemAt(i); 3956 if (shouldCancelMotion(memento, options)) { 3957 outEvents.push(allocator->obtainMotionEntry(currentTime, 3958 memento.deviceId, memento.source, 0, 3959 memento.hovering 3960 ? AMOTION_EVENT_ACTION_HOVER_EXIT 3961 : AMOTION_EVENT_ACTION_CANCEL, 3962 0, 0, 0, 3963 memento.xPrecision, memento.yPrecision, memento.downTime, 3964 memento.pointerCount, memento.pointerIds, memento.pointerCoords)); 3965 mMotionMementos.removeAt(i); 3966 } else { 3967 i += 1; 3968 } 3969 } 3970} 3971 3972void InputDispatcher::InputState::clear() { 3973 mKeyMementos.clear(); 3974 mMotionMementos.clear(); 3975 mFallbackKeys.clear(); 3976} 3977 3978void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 3979 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3980 const MotionMemento& memento = mMotionMementos.itemAt(i); 3981 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 3982 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 3983 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 3984 if (memento.deviceId == otherMemento.deviceId 3985 && memento.source == otherMemento.source) { 3986 other.mMotionMementos.removeAt(j); 3987 } else { 3988 j += 1; 3989 } 3990 } 3991 other.mMotionMementos.push(memento); 3992 } 3993 } 3994} 3995 3996int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) { 3997 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 3998 return index >= 0 ? mFallbackKeys.valueAt(index) : -1; 3999} 4000 4001void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode, 4002 int32_t fallbackKeyCode) { 4003 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4004 if (index >= 0) { 4005 mFallbackKeys.replaceValueAt(index, fallbackKeyCode); 4006 } else { 4007 mFallbackKeys.add(originalKeyCode, fallbackKeyCode); 4008 } 4009} 4010 4011void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) { 4012 mFallbackKeys.removeItem(originalKeyCode); 4013} 4014 4015bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 4016 const CancelationOptions& options) { 4017 if (options.keyCode != -1 && memento.keyCode != options.keyCode) { 4018 return false; 4019 } 4020 4021 switch (options.mode) { 4022 case CancelationOptions::CANCEL_ALL_EVENTS: 4023 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4024 return true; 4025 case CancelationOptions::CANCEL_FALLBACK_EVENTS: 4026 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 4027 default: 4028 return false; 4029 } 4030} 4031 4032bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 4033 const CancelationOptions& options) { 4034 switch (options.mode) { 4035 case CancelationOptions::CANCEL_ALL_EVENTS: 4036 return true; 4037 case CancelationOptions::CANCEL_POINTER_EVENTS: 4038 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 4039 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4040 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 4041 default: 4042 return false; 4043 } 4044} 4045 4046 4047// --- InputDispatcher::Connection --- 4048 4049InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 4050 const sp<InputWindowHandle>& inputWindowHandle) : 4051 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 4052 inputPublisher(inputChannel), 4053 lastEventTime(LONG_LONG_MAX), lastDispatchTime(LONG_LONG_MAX) { 4054} 4055 4056InputDispatcher::Connection::~Connection() { 4057} 4058 4059status_t InputDispatcher::Connection::initialize() { 4060 return inputPublisher.initialize(); 4061} 4062 4063const char* InputDispatcher::Connection::getStatusLabel() const { 4064 switch (status) { 4065 case STATUS_NORMAL: 4066 return "NORMAL"; 4067 4068 case STATUS_BROKEN: 4069 return "BROKEN"; 4070 4071 case STATUS_ZOMBIE: 4072 return "ZOMBIE"; 4073 4074 default: 4075 return "UNKNOWN"; 4076 } 4077} 4078 4079InputDispatcher::DispatchEntry* InputDispatcher::Connection::findQueuedDispatchEntryForEvent( 4080 const EventEntry* eventEntry) const { 4081 for (DispatchEntry* dispatchEntry = outboundQueue.tailSentinel.prev; 4082 dispatchEntry != & outboundQueue.headSentinel; dispatchEntry = dispatchEntry->prev) { 4083 if (dispatchEntry->eventEntry == eventEntry) { 4084 return dispatchEntry; 4085 } 4086 } 4087 return NULL; 4088} 4089 4090 4091// --- InputDispatcher::CommandEntry --- 4092 4093InputDispatcher::CommandEntry::CommandEntry() : 4094 keyEntry(NULL) { 4095} 4096 4097InputDispatcher::CommandEntry::~CommandEntry() { 4098} 4099 4100 4101// --- InputDispatcher::TouchState --- 4102 4103InputDispatcher::TouchState::TouchState() : 4104 down(false), split(false), deviceId(-1), source(0) { 4105} 4106 4107InputDispatcher::TouchState::~TouchState() { 4108} 4109 4110void InputDispatcher::TouchState::reset() { 4111 down = false; 4112 split = false; 4113 deviceId = -1; 4114 source = 0; 4115 windows.clear(); 4116} 4117 4118void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 4119 down = other.down; 4120 split = other.split; 4121 deviceId = other.deviceId; 4122 source = other.source; 4123 windows.clear(); 4124 windows.appendVector(other.windows); 4125} 4126 4127void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window, 4128 int32_t targetFlags, BitSet32 pointerIds) { 4129 if (targetFlags & InputTarget::FLAG_SPLIT) { 4130 split = true; 4131 } 4132 4133 for (size_t i = 0; i < windows.size(); i++) { 4134 TouchedWindow& touchedWindow = windows.editItemAt(i); 4135 if (touchedWindow.window == window) { 4136 touchedWindow.targetFlags |= targetFlags; 4137 touchedWindow.pointerIds.value |= pointerIds.value; 4138 return; 4139 } 4140 } 4141 4142 windows.push(); 4143 4144 TouchedWindow& touchedWindow = windows.editTop(); 4145 touchedWindow.window = window; 4146 touchedWindow.targetFlags = targetFlags; 4147 touchedWindow.pointerIds = pointerIds; 4148 touchedWindow.channel = window->inputChannel; 4149} 4150 4151void InputDispatcher::TouchState::filterNonAsIsTouchWindows() { 4152 for (size_t i = 0 ; i < windows.size(); ) { 4153 TouchedWindow& window = windows.editItemAt(i); 4154 if (window.targetFlags & InputTarget::FLAG_DISPATCH_AS_IS) { 4155 window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK; 4156 window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS; 4157 i += 1; 4158 } else { 4159 windows.removeAt(i); 4160 } 4161 } 4162} 4163 4164const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() { 4165 for (size_t i = 0; i < windows.size(); i++) { 4166 if (windows[i].targetFlags & InputTarget::FLAG_FOREGROUND) { 4167 return windows[i].window; 4168 } 4169 } 4170 return NULL; 4171} 4172 4173 4174// --- InputDispatcherThread --- 4175 4176InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 4177 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 4178} 4179 4180InputDispatcherThread::~InputDispatcherThread() { 4181} 4182 4183bool InputDispatcherThread::threadLoop() { 4184 mDispatcher->dispatchOnce(); 4185 return true; 4186} 4187 4188} // namespace android 4189