InputDispatcher.cpp revision 8134681b25dfff814ffeaad8ff70e84316c1869f
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// Motion samples that are received within this amount of time are simply coalesced 83// when batched instead of being appended. This is done because some drivers update 84// the location of pointers one at a time instead of all at once. 85// For example, when there are 10 fingers down, the input dispatcher may receive 10 86// samples in quick succession with only one finger's location changed in each sample. 87// 88// This value effectively imposes an upper bound on the touch sampling rate. 89// Touch sensors typically have a 50Hz - 200Hz sampling rate, so we expect distinct 90// samples to become available 5-20ms apart but individual finger reports can trickle 91// in over a period of 2-4ms or so. 92// 93// Empirical testing shows that a 2ms coalescing interval (500Hz) is not enough, 94// a 3ms coalescing interval (333Hz) works well most of the time and doesn't introduce 95// significant quantization noise on current hardware. 96const nsecs_t MOTION_SAMPLE_COALESCE_INTERVAL = 3 * 1000000LL; // 3ms, 333Hz 97 98 99static inline nsecs_t now() { 100 return systemTime(SYSTEM_TIME_MONOTONIC); 101} 102 103static inline const char* toString(bool value) { 104 return value ? "true" : "false"; 105} 106 107static inline int32_t getMotionEventActionPointerIndex(int32_t action) { 108 return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) 109 >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 110} 111 112static bool isValidKeyAction(int32_t action) { 113 switch (action) { 114 case AKEY_EVENT_ACTION_DOWN: 115 case AKEY_EVENT_ACTION_UP: 116 return true; 117 default: 118 return false; 119 } 120} 121 122static bool validateKeyEvent(int32_t action) { 123 if (! isValidKeyAction(action)) { 124 LOGE("Key event has invalid action code 0x%x", action); 125 return false; 126 } 127 return true; 128} 129 130static bool isValidMotionAction(int32_t action, size_t pointerCount) { 131 switch (action & AMOTION_EVENT_ACTION_MASK) { 132 case AMOTION_EVENT_ACTION_DOWN: 133 case AMOTION_EVENT_ACTION_UP: 134 case AMOTION_EVENT_ACTION_CANCEL: 135 case AMOTION_EVENT_ACTION_MOVE: 136 case AMOTION_EVENT_ACTION_OUTSIDE: 137 case AMOTION_EVENT_ACTION_HOVER_ENTER: 138 case AMOTION_EVENT_ACTION_HOVER_MOVE: 139 case AMOTION_EVENT_ACTION_HOVER_EXIT: 140 case AMOTION_EVENT_ACTION_SCROLL: 141 return true; 142 case AMOTION_EVENT_ACTION_POINTER_DOWN: 143 case AMOTION_EVENT_ACTION_POINTER_UP: { 144 int32_t index = getMotionEventActionPointerIndex(action); 145 return index >= 0 && size_t(index) < pointerCount; 146 } 147 default: 148 return false; 149 } 150} 151 152static bool validateMotionEvent(int32_t action, size_t pointerCount, 153 const PointerProperties* pointerProperties) { 154 if (! isValidMotionAction(action, pointerCount)) { 155 LOGE("Motion event has invalid action code 0x%x", action); 156 return false; 157 } 158 if (pointerCount < 1 || pointerCount > MAX_POINTERS) { 159 LOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.", 160 pointerCount, MAX_POINTERS); 161 return false; 162 } 163 BitSet32 pointerIdBits; 164 for (size_t i = 0; i < pointerCount; i++) { 165 int32_t id = pointerProperties[i].id; 166 if (id < 0 || id > MAX_POINTER_ID) { 167 LOGE("Motion event has invalid pointer id %d; value must be between 0 and %d", 168 id, MAX_POINTER_ID); 169 return false; 170 } 171 if (pointerIdBits.hasBit(id)) { 172 LOGE("Motion event has duplicate pointer id %d", id); 173 return false; 174 } 175 pointerIdBits.markBit(id); 176 } 177 return true; 178} 179 180static void scalePointerCoords(const PointerCoords* inCoords, size_t count, float scaleFactor, 181 PointerCoords* outCoords) { 182 for (size_t i = 0; i < count; i++) { 183 outCoords[i] = inCoords[i]; 184 outCoords[i].scale(scaleFactor); 185 } 186} 187 188static void dumpRegion(String8& dump, const SkRegion& region) { 189 if (region.isEmpty()) { 190 dump.append("<empty>"); 191 return; 192 } 193 194 bool first = true; 195 for (SkRegion::Iterator it(region); !it.done(); it.next()) { 196 if (first) { 197 first = false; 198 } else { 199 dump.append("|"); 200 } 201 const SkIRect& rect = it.rect(); 202 dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); 203 } 204} 205 206 207// --- InputDispatcher --- 208 209InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) : 210 mPolicy(policy), 211 mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX), 212 mNextUnblockedEvent(NULL), 213 mDispatchEnabled(true), mDispatchFrozen(false), mInputFilterEnabled(false), 214 mFocusedWindow(NULL), 215 mFocusedApplication(NULL), 216 mCurrentInputTargetsValid(false), 217 mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE), 218 mLastHoverWindow(NULL) { 219 mLooper = new Looper(false); 220 221 mInboundQueue.headSentinel.refCount = -1; 222 mInboundQueue.headSentinel.type = EventEntry::TYPE_SENTINEL; 223 mInboundQueue.headSentinel.eventTime = LONG_LONG_MIN; 224 225 mInboundQueue.tailSentinel.refCount = -1; 226 mInboundQueue.tailSentinel.type = EventEntry::TYPE_SENTINEL; 227 mInboundQueue.tailSentinel.eventTime = LONG_LONG_MAX; 228 229 mKeyRepeatState.lastKeyEntry = NULL; 230 231 policy->getDispatcherConfiguration(&mConfig); 232 233 mThrottleState.minTimeBetweenEvents = 1000000000LL / mConfig.maxEventsPerSecond; 234 mThrottleState.lastDeviceId = -1; 235 236#if DEBUG_THROTTLING 237 mThrottleState.originalSampleCount = 0; 238 LOGD("Throttling - Max events per second = %d", mConfig.maxEventsPerSecond); 239#endif 240} 241 242InputDispatcher::~InputDispatcher() { 243 { // acquire lock 244 AutoMutex _l(mLock); 245 246 resetKeyRepeatLocked(); 247 releasePendingEventLocked(); 248 drainInboundQueueLocked(); 249 } 250 251 while (mConnectionsByReceiveFd.size() != 0) { 252 unregisterInputChannel(mConnectionsByReceiveFd.valueAt(0)->inputChannel); 253 } 254} 255 256void InputDispatcher::dispatchOnce() { 257 nsecs_t nextWakeupTime = LONG_LONG_MAX; 258 { // acquire lock 259 AutoMutex _l(mLock); 260 dispatchOnceInnerLocked(&nextWakeupTime); 261 262 if (runCommandsLockedInterruptible()) { 263 nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 264 } 265 } // release lock 266 267 // Wait for callback or timeout or wake. (make sure we round up, not down) 268 nsecs_t currentTime = now(); 269 int timeoutMillis = toMillisecondTimeoutDelay(currentTime, nextWakeupTime); 270 mLooper->pollOnce(timeoutMillis); 271} 272 273void InputDispatcher::dispatchOnceInnerLocked(nsecs_t* nextWakeupTime) { 274 nsecs_t currentTime = now(); 275 276 // Reset the key repeat timer whenever we disallow key events, even if the next event 277 // is not a key. This is to ensure that we abort a key repeat if the device is just coming 278 // out of sleep. 279 if (!mPolicy->isKeyRepeatEnabled()) { 280 resetKeyRepeatLocked(); 281 } 282 283 // If dispatching is frozen, do not process timeouts or try to deliver any new events. 284 if (mDispatchFrozen) { 285#if DEBUG_FOCUS 286 LOGD("Dispatch frozen. Waiting some more."); 287#endif 288 return; 289 } 290 291 // Optimize latency of app switches. 292 // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has 293 // been pressed. When it expires, we preempt dispatch and drop all other pending events. 294 bool isAppSwitchDue = mAppSwitchDueTime <= currentTime; 295 if (mAppSwitchDueTime < *nextWakeupTime) { 296 *nextWakeupTime = mAppSwitchDueTime; 297 } 298 299 // Ready to start a new event. 300 // If we don't already have a pending event, go grab one. 301 if (! mPendingEvent) { 302 if (mInboundQueue.isEmpty()) { 303 if (isAppSwitchDue) { 304 // The inbound queue is empty so the app switch key we were waiting 305 // for will never arrive. Stop waiting for it. 306 resetPendingAppSwitchLocked(false); 307 isAppSwitchDue = false; 308 } 309 310 // Synthesize a key repeat if appropriate. 311 if (mKeyRepeatState.lastKeyEntry) { 312 if (currentTime >= mKeyRepeatState.nextRepeatTime) { 313 mPendingEvent = synthesizeKeyRepeatLocked(currentTime); 314 } else { 315 if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) { 316 *nextWakeupTime = mKeyRepeatState.nextRepeatTime; 317 } 318 } 319 } 320 if (! mPendingEvent) { 321 return; 322 } 323 } else { 324 // Inbound queue has at least one entry. 325 EventEntry* entry = mInboundQueue.headSentinel.next; 326 327 // Throttle the entry if it is a move event and there are no 328 // other events behind it in the queue. Due to movement batching, additional 329 // samples may be appended to this event by the time the throttling timeout 330 // expires. 331 // TODO Make this smarter and consider throttling per device independently. 332 if (entry->type == EventEntry::TYPE_MOTION 333 && !isAppSwitchDue 334 && mDispatchEnabled 335 && (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) 336 && !entry->isInjected()) { 337 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 338 int32_t deviceId = motionEntry->deviceId; 339 uint32_t source = motionEntry->source; 340 if (! isAppSwitchDue 341 && motionEntry->next == & mInboundQueue.tailSentinel // exactly one event 342 && (motionEntry->action == AMOTION_EVENT_ACTION_MOVE 343 || motionEntry->action == AMOTION_EVENT_ACTION_HOVER_MOVE) 344 && deviceId == mThrottleState.lastDeviceId 345 && source == mThrottleState.lastSource) { 346 nsecs_t nextTime = mThrottleState.lastEventTime 347 + mThrottleState.minTimeBetweenEvents; 348 if (currentTime < nextTime) { 349 // Throttle it! 350#if DEBUG_THROTTLING 351 LOGD("Throttling - Delaying motion event for " 352 "device %d, source 0x%08x by up to %0.3fms.", 353 deviceId, source, (nextTime - currentTime) * 0.000001); 354#endif 355 if (nextTime < *nextWakeupTime) { 356 *nextWakeupTime = nextTime; 357 } 358 if (mThrottleState.originalSampleCount == 0) { 359 mThrottleState.originalSampleCount = 360 motionEntry->countSamples(); 361 } 362 return; 363 } 364 } 365 366#if DEBUG_THROTTLING 367 if (mThrottleState.originalSampleCount != 0) { 368 uint32_t count = motionEntry->countSamples(); 369 LOGD("Throttling - Motion event sample count grew by %d from %d to %d.", 370 count - mThrottleState.originalSampleCount, 371 mThrottleState.originalSampleCount, count); 372 mThrottleState.originalSampleCount = 0; 373 } 374#endif 375 376 mThrottleState.lastEventTime = currentTime; 377 mThrottleState.lastDeviceId = deviceId; 378 mThrottleState.lastSource = source; 379 } 380 381 mInboundQueue.dequeue(entry); 382 mPendingEvent = entry; 383 } 384 385 // Poke user activity for this event. 386 if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) { 387 pokeUserActivityLocked(mPendingEvent); 388 } 389 } 390 391 // Now we have an event to dispatch. 392 // All events are eventually dequeued and processed this way, even if we intend to drop them. 393 LOG_ASSERT(mPendingEvent != NULL); 394 bool done = false; 395 DropReason dropReason = DROP_REASON_NOT_DROPPED; 396 if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) { 397 dropReason = DROP_REASON_POLICY; 398 } else if (!mDispatchEnabled) { 399 dropReason = DROP_REASON_DISABLED; 400 } 401 402 if (mNextUnblockedEvent == mPendingEvent) { 403 mNextUnblockedEvent = NULL; 404 } 405 406 switch (mPendingEvent->type) { 407 case EventEntry::TYPE_CONFIGURATION_CHANGED: { 408 ConfigurationChangedEntry* typedEntry = 409 static_cast<ConfigurationChangedEntry*>(mPendingEvent); 410 done = dispatchConfigurationChangedLocked(currentTime, typedEntry); 411 dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped 412 break; 413 } 414 415 case EventEntry::TYPE_KEY: { 416 KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent); 417 if (isAppSwitchDue) { 418 if (isAppSwitchKeyEventLocked(typedEntry)) { 419 resetPendingAppSwitchLocked(true); 420 isAppSwitchDue = false; 421 } else if (dropReason == DROP_REASON_NOT_DROPPED) { 422 dropReason = DROP_REASON_APP_SWITCH; 423 } 424 } 425 if (dropReason == DROP_REASON_NOT_DROPPED 426 && isStaleEventLocked(currentTime, typedEntry)) { 427 dropReason = DROP_REASON_STALE; 428 } 429 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 430 dropReason = DROP_REASON_BLOCKED; 431 } 432 done = dispatchKeyLocked(currentTime, typedEntry, &dropReason, nextWakeupTime); 433 break; 434 } 435 436 case EventEntry::TYPE_MOTION: { 437 MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent); 438 if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) { 439 dropReason = DROP_REASON_APP_SWITCH; 440 } 441 if (dropReason == DROP_REASON_NOT_DROPPED 442 && isStaleEventLocked(currentTime, typedEntry)) { 443 dropReason = DROP_REASON_STALE; 444 } 445 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 446 dropReason = DROP_REASON_BLOCKED; 447 } 448 done = dispatchMotionLocked(currentTime, typedEntry, 449 &dropReason, nextWakeupTime); 450 break; 451 } 452 453 default: 454 LOG_ASSERT(false); 455 break; 456 } 457 458 if (done) { 459 if (dropReason != DROP_REASON_NOT_DROPPED) { 460 dropInboundEventLocked(mPendingEvent, dropReason); 461 } 462 463 releasePendingEventLocked(); 464 *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 465 } 466} 467 468bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) { 469 bool needWake = mInboundQueue.isEmpty(); 470 mInboundQueue.enqueueAtTail(entry); 471 472 switch (entry->type) { 473 case EventEntry::TYPE_KEY: { 474 // Optimize app switch latency. 475 // If the application takes too long to catch up then we drop all events preceding 476 // the app switch key. 477 KeyEntry* keyEntry = static_cast<KeyEntry*>(entry); 478 if (isAppSwitchKeyEventLocked(keyEntry)) { 479 if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) { 480 mAppSwitchSawKeyDown = true; 481 } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 482 if (mAppSwitchSawKeyDown) { 483#if DEBUG_APP_SWITCH 484 LOGD("App switch is pending!"); 485#endif 486 mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT; 487 mAppSwitchSawKeyDown = false; 488 needWake = true; 489 } 490 } 491 } 492 break; 493 } 494 495 case EventEntry::TYPE_MOTION: { 496 // Optimize case where the current application is unresponsive and the user 497 // decides to touch a window in a different application. 498 // If the application takes too long to catch up then we drop all events preceding 499 // the touch into the other window. 500 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 501 if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN 502 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 503 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY 504 && mInputTargetWaitApplication != NULL) { 505 int32_t x = int32_t(motionEntry->firstSample.pointerCoords[0]. 506 getAxisValue(AMOTION_EVENT_AXIS_X)); 507 int32_t y = int32_t(motionEntry->firstSample.pointerCoords[0]. 508 getAxisValue(AMOTION_EVENT_AXIS_Y)); 509 const InputWindow* touchedWindow = findTouchedWindowAtLocked(x, y); 510 if (touchedWindow 511 && touchedWindow->inputWindowHandle != NULL 512 && touchedWindow->inputWindowHandle->getInputApplicationHandle() 513 != mInputTargetWaitApplication) { 514 // User touched a different application than the one we are waiting on. 515 // Flag the event, and start pruning the input queue. 516 mNextUnblockedEvent = motionEntry; 517 needWake = true; 518 } 519 } 520 break; 521 } 522 } 523 524 return needWake; 525} 526 527const InputWindow* InputDispatcher::findTouchedWindowAtLocked(int32_t x, int32_t y) { 528 // Traverse windows from front to back to find touched window. 529 size_t numWindows = mWindows.size(); 530 for (size_t i = 0; i < numWindows; i++) { 531 const InputWindow* window = & mWindows.editItemAt(i); 532 int32_t flags = window->layoutParamsFlags; 533 534 if (window->visible) { 535 if (!(flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 536 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 537 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 538 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 539 // Found window. 540 return window; 541 } 542 } 543 } 544 545 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 546 // Error window is on top but not visible, so touch is dropped. 547 return NULL; 548 } 549 } 550 return NULL; 551} 552 553void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) { 554 const char* reason; 555 switch (dropReason) { 556 case DROP_REASON_POLICY: 557#if DEBUG_INBOUND_EVENT_DETAILS 558 LOGD("Dropped event because policy consumed it."); 559#endif 560 reason = "inbound event was dropped because the policy consumed it"; 561 break; 562 case DROP_REASON_DISABLED: 563 LOGI("Dropped event because input dispatch is disabled."); 564 reason = "inbound event was dropped because input dispatch is disabled"; 565 break; 566 case DROP_REASON_APP_SWITCH: 567 LOGI("Dropped event because of pending overdue app switch."); 568 reason = "inbound event was dropped because of pending overdue app switch"; 569 break; 570 case DROP_REASON_BLOCKED: 571 LOGI("Dropped event because the current application is not responding and the user " 572 "has started interacting with a different application."); 573 reason = "inbound event was dropped because the current application is not responding " 574 "and the user has started interacting with a different application"; 575 break; 576 case DROP_REASON_STALE: 577 LOGI("Dropped event because it is stale."); 578 reason = "inbound event was dropped because it is stale"; 579 break; 580 default: 581 LOG_ASSERT(false); 582 return; 583 } 584 585 switch (entry->type) { 586 case EventEntry::TYPE_KEY: { 587 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 588 synthesizeCancelationEventsForAllConnectionsLocked(options); 589 break; 590 } 591 case EventEntry::TYPE_MOTION: { 592 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 593 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 594 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason); 595 synthesizeCancelationEventsForAllConnectionsLocked(options); 596 } else { 597 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason); 598 synthesizeCancelationEventsForAllConnectionsLocked(options); 599 } 600 break; 601 } 602 } 603} 604 605bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) { 606 return keyCode == AKEYCODE_HOME || keyCode == AKEYCODE_ENDCALL; 607} 608 609bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) { 610 return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) 611 && isAppSwitchKeyCode(keyEntry->keyCode) 612 && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED) 613 && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER); 614} 615 616bool InputDispatcher::isAppSwitchPendingLocked() { 617 return mAppSwitchDueTime != LONG_LONG_MAX; 618} 619 620void InputDispatcher::resetPendingAppSwitchLocked(bool handled) { 621 mAppSwitchDueTime = LONG_LONG_MAX; 622 623#if DEBUG_APP_SWITCH 624 if (handled) { 625 LOGD("App switch has arrived."); 626 } else { 627 LOGD("App switch was abandoned."); 628 } 629#endif 630} 631 632bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) { 633 return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT; 634} 635 636bool InputDispatcher::runCommandsLockedInterruptible() { 637 if (mCommandQueue.isEmpty()) { 638 return false; 639 } 640 641 do { 642 CommandEntry* commandEntry = mCommandQueue.dequeueAtHead(); 643 644 Command command = commandEntry->command; 645 (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible' 646 647 commandEntry->connection.clear(); 648 mAllocator.releaseCommandEntry(commandEntry); 649 } while (! mCommandQueue.isEmpty()); 650 return true; 651} 652 653InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) { 654 CommandEntry* commandEntry = mAllocator.obtainCommandEntry(command); 655 mCommandQueue.enqueueAtTail(commandEntry); 656 return commandEntry; 657} 658 659void InputDispatcher::drainInboundQueueLocked() { 660 while (! mInboundQueue.isEmpty()) { 661 EventEntry* entry = mInboundQueue.dequeueAtHead(); 662 releaseInboundEventLocked(entry); 663 } 664} 665 666void InputDispatcher::releasePendingEventLocked() { 667 if (mPendingEvent) { 668 releaseInboundEventLocked(mPendingEvent); 669 mPendingEvent = NULL; 670 } 671} 672 673void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) { 674 InjectionState* injectionState = entry->injectionState; 675 if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) { 676#if DEBUG_DISPATCH_CYCLE 677 LOGD("Injected inbound event was dropped."); 678#endif 679 setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED); 680 } 681 mAllocator.releaseEventEntry(entry); 682} 683 684void InputDispatcher::resetKeyRepeatLocked() { 685 if (mKeyRepeatState.lastKeyEntry) { 686 mAllocator.releaseKeyEntry(mKeyRepeatState.lastKeyEntry); 687 mKeyRepeatState.lastKeyEntry = NULL; 688 } 689} 690 691InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked(nsecs_t currentTime) { 692 KeyEntry* entry = mKeyRepeatState.lastKeyEntry; 693 694 // Reuse the repeated key entry if it is otherwise unreferenced. 695 uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK) 696 | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED; 697 if (entry->refCount == 1) { 698 mAllocator.recycleKeyEntry(entry); 699 entry->eventTime = currentTime; 700 entry->policyFlags = policyFlags; 701 entry->repeatCount += 1; 702 } else { 703 KeyEntry* newEntry = mAllocator.obtainKeyEntry(currentTime, 704 entry->deviceId, entry->source, policyFlags, 705 entry->action, entry->flags, entry->keyCode, entry->scanCode, 706 entry->metaState, entry->repeatCount + 1, entry->downTime); 707 708 mKeyRepeatState.lastKeyEntry = newEntry; 709 mAllocator.releaseKeyEntry(entry); 710 711 entry = newEntry; 712 } 713 entry->syntheticRepeat = true; 714 715 // Increment reference count since we keep a reference to the event in 716 // mKeyRepeatState.lastKeyEntry in addition to the one we return. 717 entry->refCount += 1; 718 719 mKeyRepeatState.nextRepeatTime = currentTime + mConfig.keyRepeatDelay; 720 return entry; 721} 722 723bool InputDispatcher::dispatchConfigurationChangedLocked( 724 nsecs_t currentTime, ConfigurationChangedEntry* entry) { 725#if DEBUG_OUTBOUND_EVENT_DETAILS 726 LOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime); 727#endif 728 729 // Reset key repeating in case a keyboard device was added or removed or something. 730 resetKeyRepeatLocked(); 731 732 // Enqueue a command to run outside the lock to tell the policy that the configuration changed. 733 CommandEntry* commandEntry = postCommandLocked( 734 & InputDispatcher::doNotifyConfigurationChangedInterruptible); 735 commandEntry->eventTime = entry->eventTime; 736 return true; 737} 738 739bool InputDispatcher::dispatchKeyLocked(nsecs_t currentTime, KeyEntry* entry, 740 DropReason* dropReason, nsecs_t* nextWakeupTime) { 741 // Preprocessing. 742 if (! entry->dispatchInProgress) { 743 if (entry->repeatCount == 0 744 && entry->action == AKEY_EVENT_ACTION_DOWN 745 && (entry->policyFlags & POLICY_FLAG_TRUSTED) 746 && (!(entry->policyFlags & POLICY_FLAG_DISABLE_KEY_REPEAT))) { 747 if (mKeyRepeatState.lastKeyEntry 748 && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) { 749 // We have seen two identical key downs in a row which indicates that the device 750 // driver is automatically generating key repeats itself. We take note of the 751 // repeat here, but we disable our own next key repeat timer since it is clear that 752 // we will not need to synthesize key repeats ourselves. 753 entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1; 754 resetKeyRepeatLocked(); 755 mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves 756 } else { 757 // Not a repeat. Save key down state in case we do see a repeat later. 758 resetKeyRepeatLocked(); 759 mKeyRepeatState.nextRepeatTime = entry->eventTime + mConfig.keyRepeatTimeout; 760 } 761 mKeyRepeatState.lastKeyEntry = entry; 762 entry->refCount += 1; 763 } else if (! entry->syntheticRepeat) { 764 resetKeyRepeatLocked(); 765 } 766 767 if (entry->repeatCount == 1) { 768 entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS; 769 } else { 770 entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS; 771 } 772 773 entry->dispatchInProgress = true; 774 resetTargetsLocked(); 775 776 logOutboundKeyDetailsLocked("dispatchKey - ", entry); 777 } 778 779 // Give the policy a chance to intercept the key. 780 if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) { 781 if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) { 782 CommandEntry* commandEntry = postCommandLocked( 783 & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible); 784 if (mFocusedWindow) { 785 commandEntry->inputWindowHandle = mFocusedWindow->inputWindowHandle; 786 } 787 commandEntry->keyEntry = entry; 788 entry->refCount += 1; 789 return false; // wait for the command to run 790 } else { 791 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 792 } 793 } else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) { 794 if (*dropReason == DROP_REASON_NOT_DROPPED) { 795 *dropReason = DROP_REASON_POLICY; 796 } 797 } 798 799 // Clean up if dropping the event. 800 if (*dropReason != DROP_REASON_NOT_DROPPED) { 801 resetTargetsLocked(); 802 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 803 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 804 return true; 805 } 806 807 // Identify targets. 808 if (! mCurrentInputTargetsValid) { 809 int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime, 810 entry, nextWakeupTime); 811 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 812 return false; 813 } 814 815 setInjectionResultLocked(entry, injectionResult); 816 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 817 return true; 818 } 819 820 addMonitoringTargetsLocked(); 821 commitTargetsLocked(); 822 } 823 824 // Dispatch the key. 825 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 826 return true; 827} 828 829void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) { 830#if DEBUG_OUTBOUND_EVENT_DETAILS 831 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 832 "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, " 833 "repeatCount=%d, downTime=%lld", 834 prefix, 835 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 836 entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState, 837 entry->repeatCount, entry->downTime); 838#endif 839} 840 841bool InputDispatcher::dispatchMotionLocked( 842 nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) { 843 // Preprocessing. 844 if (! entry->dispatchInProgress) { 845 entry->dispatchInProgress = true; 846 resetTargetsLocked(); 847 848 logOutboundMotionDetailsLocked("dispatchMotion - ", entry); 849 } 850 851 // Clean up if dropping the event. 852 if (*dropReason != DROP_REASON_NOT_DROPPED) { 853 resetTargetsLocked(); 854 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 855 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 856 return true; 857 } 858 859 bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER; 860 861 // Identify targets. 862 bool conflictingPointerActions = false; 863 if (! mCurrentInputTargetsValid) { 864 int32_t injectionResult; 865 const MotionSample* splitBatchAfterSample = NULL; 866 if (isPointerEvent) { 867 // Pointer event. (eg. touchscreen) 868 injectionResult = findTouchedWindowTargetsLocked(currentTime, 869 entry, nextWakeupTime, &conflictingPointerActions, &splitBatchAfterSample); 870 } else { 871 // Non touch event. (eg. trackball) 872 injectionResult = findFocusedWindowTargetsLocked(currentTime, 873 entry, nextWakeupTime); 874 } 875 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 876 return false; 877 } 878 879 setInjectionResultLocked(entry, injectionResult); 880 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 881 return true; 882 } 883 884 addMonitoringTargetsLocked(); 885 commitTargetsLocked(); 886 887 // Unbatch the event if necessary by splitting it into two parts after the 888 // motion sample indicated by splitBatchAfterSample. 889 if (splitBatchAfterSample && splitBatchAfterSample->next) { 890#if DEBUG_BATCHING 891 uint32_t originalSampleCount = entry->countSamples(); 892#endif 893 MotionSample* nextSample = splitBatchAfterSample->next; 894 MotionEntry* nextEntry = mAllocator.obtainMotionEntry(nextSample->eventTime, 895 entry->deviceId, entry->source, entry->policyFlags, 896 entry->action, entry->flags, 897 entry->metaState, entry->buttonState, entry->edgeFlags, 898 entry->xPrecision, entry->yPrecision, entry->downTime, 899 entry->pointerCount, entry->pointerProperties, nextSample->pointerCoords); 900 if (nextSample != entry->lastSample) { 901 nextEntry->firstSample.next = nextSample->next; 902 nextEntry->lastSample = entry->lastSample; 903 } 904 mAllocator.freeMotionSample(nextSample); 905 906 entry->lastSample = const_cast<MotionSample*>(splitBatchAfterSample); 907 entry->lastSample->next = NULL; 908 909 if (entry->injectionState) { 910 nextEntry->injectionState = entry->injectionState; 911 entry->injectionState->refCount += 1; 912 } 913 914#if DEBUG_BATCHING 915 LOGD("Split batch of %d samples into two parts, first part has %d samples, " 916 "second part has %d samples.", originalSampleCount, 917 entry->countSamples(), nextEntry->countSamples()); 918#endif 919 920 mInboundQueue.enqueueAtHead(nextEntry); 921 } 922 } 923 924 // Dispatch the motion. 925 if (conflictingPointerActions) { 926 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 927 "conflicting pointer actions"); 928 synthesizeCancelationEventsForAllConnectionsLocked(options); 929 } 930 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 931 return true; 932} 933 934 935void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) { 936#if DEBUG_OUTBOUND_EVENT_DETAILS 937 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 938 "action=0x%x, flags=0x%x, " 939 "metaState=0x%x, buttonState=0x%x, " 940 "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld", 941 prefix, 942 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 943 entry->action, entry->flags, 944 entry->metaState, entry->buttonState, 945 entry->edgeFlags, entry->xPrecision, entry->yPrecision, 946 entry->downTime); 947 948 // Print the most recent sample that we have available, this may change due to batching. 949 size_t sampleCount = 1; 950 const MotionSample* sample = & entry->firstSample; 951 for (; sample->next != NULL; sample = sample->next) { 952 sampleCount += 1; 953 } 954 for (uint32_t i = 0; i < entry->pointerCount; i++) { 955 LOGD(" Pointer %d: id=%d, toolType=%d, " 956 "x=%f, y=%f, pressure=%f, size=%f, " 957 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 958 "orientation=%f", 959 i, entry->pointerProperties[i].id, 960 entry->pointerProperties[i].toolType, 961 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 962 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 963 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 964 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 965 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 966 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 967 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 968 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 969 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 970 } 971 972 // Keep in mind that due to batching, it is possible for the number of samples actually 973 // dispatched to change before the application finally consumed them. 974 if (entry->action == AMOTION_EVENT_ACTION_MOVE) { 975 LOGD(" ... Total movement samples currently batched %d ...", sampleCount); 976 } 977#endif 978} 979 980void InputDispatcher::dispatchEventToCurrentInputTargetsLocked(nsecs_t currentTime, 981 EventEntry* eventEntry, bool resumeWithAppendedMotionSample) { 982#if DEBUG_DISPATCH_CYCLE 983 LOGD("dispatchEventToCurrentInputTargets - " 984 "resumeWithAppendedMotionSample=%s", 985 toString(resumeWithAppendedMotionSample)); 986#endif 987 988 LOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true 989 990 pokeUserActivityLocked(eventEntry); 991 992 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 993 const InputTarget& inputTarget = mCurrentInputTargets.itemAt(i); 994 995 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 996 if (connectionIndex >= 0) { 997 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 998 prepareDispatchCycleLocked(currentTime, connection, eventEntry, & inputTarget, 999 resumeWithAppendedMotionSample); 1000 } else { 1001#if DEBUG_FOCUS 1002 LOGD("Dropping event delivery to target with channel '%s' because it " 1003 "is no longer registered with the input dispatcher.", 1004 inputTarget.inputChannel->getName().string()); 1005#endif 1006 } 1007 } 1008} 1009 1010void InputDispatcher::resetTargetsLocked() { 1011 mCurrentInputTargetsValid = false; 1012 mCurrentInputTargets.clear(); 1013 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1014 mInputTargetWaitApplication.clear(); 1015} 1016 1017void InputDispatcher::commitTargetsLocked() { 1018 mCurrentInputTargetsValid = true; 1019} 1020 1021int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime, 1022 const EventEntry* entry, const InputApplication* application, const InputWindow* window, 1023 nsecs_t* nextWakeupTime) { 1024 if (application == NULL && window == NULL) { 1025 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) { 1026#if DEBUG_FOCUS 1027 LOGD("Waiting for system to become ready for input."); 1028#endif 1029 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY; 1030 mInputTargetWaitStartTime = currentTime; 1031 mInputTargetWaitTimeoutTime = LONG_LONG_MAX; 1032 mInputTargetWaitTimeoutExpired = false; 1033 mInputTargetWaitApplication.clear(); 1034 } 1035 } else { 1036 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1037#if DEBUG_FOCUS 1038 LOGD("Waiting for application to become ready for input: %s", 1039 getApplicationWindowLabelLocked(application, window).string()); 1040#endif 1041 nsecs_t timeout = window ? window->dispatchingTimeout : 1042 application ? application->dispatchingTimeout : DEFAULT_INPUT_DISPATCHING_TIMEOUT; 1043 1044 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY; 1045 mInputTargetWaitStartTime = currentTime; 1046 mInputTargetWaitTimeoutTime = currentTime + timeout; 1047 mInputTargetWaitTimeoutExpired = false; 1048 mInputTargetWaitApplication.clear(); 1049 1050 if (window && window->inputWindowHandle != NULL) { 1051 mInputTargetWaitApplication = 1052 window->inputWindowHandle->getInputApplicationHandle(); 1053 } 1054 if (mInputTargetWaitApplication == NULL && application) { 1055 mInputTargetWaitApplication = application->inputApplicationHandle; 1056 } 1057 } 1058 } 1059 1060 if (mInputTargetWaitTimeoutExpired) { 1061 return INPUT_EVENT_INJECTION_TIMED_OUT; 1062 } 1063 1064 if (currentTime >= mInputTargetWaitTimeoutTime) { 1065 onANRLocked(currentTime, application, window, entry->eventTime, mInputTargetWaitStartTime); 1066 1067 // Force poll loop to wake up immediately on next iteration once we get the 1068 // ANR response back from the policy. 1069 *nextWakeupTime = LONG_LONG_MIN; 1070 return INPUT_EVENT_INJECTION_PENDING; 1071 } else { 1072 // Force poll loop to wake up when timeout is due. 1073 if (mInputTargetWaitTimeoutTime < *nextWakeupTime) { 1074 *nextWakeupTime = mInputTargetWaitTimeoutTime; 1075 } 1076 return INPUT_EVENT_INJECTION_PENDING; 1077 } 1078} 1079 1080void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout, 1081 const sp<InputChannel>& inputChannel) { 1082 if (newTimeout > 0) { 1083 // Extend the timeout. 1084 mInputTargetWaitTimeoutTime = now() + newTimeout; 1085 } else { 1086 // Give up. 1087 mInputTargetWaitTimeoutExpired = true; 1088 1089 // Release the touch targets. 1090 mTouchState.reset(); 1091 1092 // Input state will not be realistic. Mark it out of sync. 1093 if (inputChannel.get()) { 1094 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 1095 if (connectionIndex >= 0) { 1096 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1097 if (connection->status == Connection::STATUS_NORMAL) { 1098 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, 1099 "application not responding"); 1100 synthesizeCancelationEventsForConnectionLocked(connection, options); 1101 } 1102 } 1103 } 1104 } 1105} 1106 1107nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked( 1108 nsecs_t currentTime) { 1109 if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1110 return currentTime - mInputTargetWaitStartTime; 1111 } 1112 return 0; 1113} 1114 1115void InputDispatcher::resetANRTimeoutsLocked() { 1116#if DEBUG_FOCUS 1117 LOGD("Resetting ANR timeouts."); 1118#endif 1119 1120 // Reset input target wait timeout. 1121 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1122} 1123 1124int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime, 1125 const EventEntry* entry, nsecs_t* nextWakeupTime) { 1126 mCurrentInputTargets.clear(); 1127 1128 int32_t injectionResult; 1129 1130 // If there is no currently focused window and no focused application 1131 // then drop the event. 1132 if (! mFocusedWindow) { 1133 if (mFocusedApplication) { 1134#if DEBUG_FOCUS 1135 LOGD("Waiting because there is no focused window but there is a " 1136 "focused application that may eventually add a window: %s.", 1137 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1138#endif 1139 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1140 mFocusedApplication, NULL, nextWakeupTime); 1141 goto Unresponsive; 1142 } 1143 1144 LOGI("Dropping event because there is no focused window or focused application."); 1145 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1146 goto Failed; 1147 } 1148 1149 // Check permissions. 1150 if (! checkInjectionPermission(mFocusedWindow, entry->injectionState)) { 1151 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1152 goto Failed; 1153 } 1154 1155 // If the currently focused window is paused then keep waiting. 1156 if (mFocusedWindow->paused) { 1157#if DEBUG_FOCUS 1158 LOGD("Waiting because focused window is paused."); 1159#endif 1160 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1161 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1162 goto Unresponsive; 1163 } 1164 1165 // If the currently focused window is still working on previous events then keep waiting. 1166 if (! isWindowFinishedWithPreviousInputLocked(mFocusedWindow)) { 1167#if DEBUG_FOCUS 1168 LOGD("Waiting because focused window still processing previous input."); 1169#endif 1170 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1171 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1172 goto Unresponsive; 1173 } 1174 1175 // Success! Output targets. 1176 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1177 addWindowTargetLocked(mFocusedWindow, 1178 InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0)); 1179 1180 // Done. 1181Failed: 1182Unresponsive: 1183 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1184 updateDispatchStatisticsLocked(currentTime, entry, 1185 injectionResult, timeSpentWaitingForApplication); 1186#if DEBUG_FOCUS 1187 LOGD("findFocusedWindow finished: injectionResult=%d, " 1188 "timeSpendWaitingForApplication=%0.1fms", 1189 injectionResult, timeSpentWaitingForApplication / 1000000.0); 1190#endif 1191 return injectionResult; 1192} 1193 1194int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime, 1195 const MotionEntry* entry, nsecs_t* nextWakeupTime, bool* outConflictingPointerActions, 1196 const MotionSample** outSplitBatchAfterSample) { 1197 enum InjectionPermission { 1198 INJECTION_PERMISSION_UNKNOWN, 1199 INJECTION_PERMISSION_GRANTED, 1200 INJECTION_PERMISSION_DENIED 1201 }; 1202 1203 mCurrentInputTargets.clear(); 1204 1205 nsecs_t startTime = now(); 1206 1207 // For security reasons, we defer updating the touch state until we are sure that 1208 // event injection will be allowed. 1209 // 1210 // FIXME In the original code, screenWasOff could never be set to true. 1211 // The reason is that the POLICY_FLAG_WOKE_HERE 1212 // and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw 1213 // EV_KEY, EV_REL and EV_ABS events. As it happens, the touch event was 1214 // actually enqueued using the policyFlags that appeared in the final EV_SYN 1215 // events upon which no preprocessing took place. So policyFlags was always 0. 1216 // In the new native input dispatcher we're a bit more careful about event 1217 // preprocessing so the touches we receive can actually have non-zero policyFlags. 1218 // Unfortunately we obtain undesirable behavior. 1219 // 1220 // Here's what happens: 1221 // 1222 // When the device dims in anticipation of going to sleep, touches 1223 // in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause 1224 // the device to brighten and reset the user activity timer. 1225 // Touches on other windows (such as the launcher window) 1226 // are dropped. Then after a moment, the device goes to sleep. Oops. 1227 // 1228 // Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE 1229 // instead of POLICY_FLAG_WOKE_HERE... 1230 // 1231 bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE; 1232 1233 int32_t action = entry->action; 1234 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 1235 1236 // Update the touch state as needed based on the properties of the touch event. 1237 int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING; 1238 InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1239 const InputWindow* newHoverWindow = NULL; 1240 1241 bool isSplit = mTouchState.split; 1242 bool switchedDevice = mTouchState.deviceId != entry->deviceId 1243 || mTouchState.source != entry->source; 1244 bool isHoverAction = (maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1245 || maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER 1246 || maskedAction == AMOTION_EVENT_ACTION_HOVER_EXIT); 1247 bool newGesture = (maskedAction == AMOTION_EVENT_ACTION_DOWN 1248 || maskedAction == AMOTION_EVENT_ACTION_SCROLL 1249 || isHoverAction); 1250 bool wrongDevice = false; 1251 if (newGesture) { 1252 bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN; 1253 if (switchedDevice && mTouchState.down && !down) { 1254#if DEBUG_FOCUS 1255 LOGD("Dropping event because a pointer for a different device is already down."); 1256#endif 1257 mTempTouchState.copyFrom(mTouchState); 1258 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1259 switchedDevice = false; 1260 wrongDevice = true; 1261 goto Failed; 1262 } 1263 mTempTouchState.reset(); 1264 mTempTouchState.down = down; 1265 mTempTouchState.deviceId = entry->deviceId; 1266 mTempTouchState.source = entry->source; 1267 isSplit = false; 1268 } else { 1269 mTempTouchState.copyFrom(mTouchState); 1270 } 1271 1272 if (newGesture || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN)) { 1273 /* Case 1: New splittable pointer going down, or need target for hover or scroll. */ 1274 1275 const MotionSample* sample = &entry->firstSample; 1276 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1277 int32_t x = int32_t(sample->pointerCoords[pointerIndex]. 1278 getAxisValue(AMOTION_EVENT_AXIS_X)); 1279 int32_t y = int32_t(sample->pointerCoords[pointerIndex]. 1280 getAxisValue(AMOTION_EVENT_AXIS_Y)); 1281 const InputWindow* newTouchedWindow = NULL; 1282 const InputWindow* topErrorWindow = NULL; 1283 bool isTouchModal = false; 1284 1285 // Traverse windows from front to back to find touched window and outside targets. 1286 size_t numWindows = mWindows.size(); 1287 for (size_t i = 0; i < numWindows; i++) { 1288 const InputWindow* window = & mWindows.editItemAt(i); 1289 int32_t flags = window->layoutParamsFlags; 1290 1291 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 1292 if (! topErrorWindow) { 1293 topErrorWindow = window; 1294 } 1295 } 1296 1297 if (window->visible) { 1298 if (! (flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 1299 isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 1300 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 1301 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 1302 if (! screenWasOff || flags & InputWindow::FLAG_TOUCHABLE_WHEN_WAKING) { 1303 newTouchedWindow = window; 1304 } 1305 break; // found touched window, exit window loop 1306 } 1307 } 1308 1309 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1310 && (flags & InputWindow::FLAG_WATCH_OUTSIDE_TOUCH)) { 1311 int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE; 1312 if (isWindowObscuredAtPointLocked(window, x, y)) { 1313 outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1314 } 1315 1316 mTempTouchState.addOrUpdateWindow(window, outsideTargetFlags, BitSet32(0)); 1317 } 1318 } 1319 } 1320 1321 // If there is an error window but it is not taking focus (typically because 1322 // it is invisible) then wait for it. Any other focused window may in 1323 // fact be in ANR state. 1324 if (topErrorWindow && newTouchedWindow != topErrorWindow) { 1325#if DEBUG_FOCUS 1326 LOGD("Waiting because system error window is pending."); 1327#endif 1328 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1329 NULL, NULL, nextWakeupTime); 1330 injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1331 goto Unresponsive; 1332 } 1333 1334 // Figure out whether splitting will be allowed for this window. 1335 if (newTouchedWindow && newTouchedWindow->supportsSplitTouch()) { 1336 // New window supports splitting. 1337 isSplit = true; 1338 } else if (isSplit) { 1339 // New window does not support splitting but we have already split events. 1340 // Assign the pointer to the first foreground window we find. 1341 // (May be NULL which is why we put this code block before the next check.) 1342 newTouchedWindow = mTempTouchState.getFirstForegroundWindow(); 1343 } 1344 1345 // If we did not find a touched window then fail. 1346 if (! newTouchedWindow) { 1347 if (mFocusedApplication) { 1348#if DEBUG_FOCUS 1349 LOGD("Waiting because there is no touched window but there is a " 1350 "focused application that may eventually add a new window: %s.", 1351 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1352#endif 1353 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1354 mFocusedApplication, NULL, nextWakeupTime); 1355 goto Unresponsive; 1356 } 1357 1358 LOGI("Dropping event because there is no touched window or focused application."); 1359 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1360 goto Failed; 1361 } 1362 1363 // Set target flags. 1364 int32_t targetFlags = InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS; 1365 if (isSplit) { 1366 targetFlags |= InputTarget::FLAG_SPLIT; 1367 } 1368 if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) { 1369 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1370 } 1371 1372 // Update hover state. 1373 if (isHoverAction) { 1374 newHoverWindow = newTouchedWindow; 1375 1376 // Ensure all subsequent motion samples are also within the touched window. 1377 // Set *outSplitBatchAfterSample to the sample before the first one that is not 1378 // within the touched window. 1379 if (!isTouchModal) { 1380 while (sample->next) { 1381 if (!newHoverWindow->touchableRegionContainsPoint( 1382 sample->next->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X), 1383 sample->next->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y))) { 1384 *outSplitBatchAfterSample = sample; 1385 break; 1386 } 1387 sample = sample->next; 1388 } 1389 } 1390 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1391 newHoverWindow = mLastHoverWindow; 1392 } 1393 1394 // Update the temporary touch state. 1395 BitSet32 pointerIds; 1396 if (isSplit) { 1397 uint32_t pointerId = entry->pointerProperties[pointerIndex].id; 1398 pointerIds.markBit(pointerId); 1399 } 1400 mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds); 1401 } else { 1402 /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */ 1403 1404 // If the pointer is not currently down, then ignore the event. 1405 if (! mTempTouchState.down) { 1406#if DEBUG_FOCUS 1407 LOGD("Dropping event because the pointer is not down or we previously " 1408 "dropped the pointer down event."); 1409#endif 1410 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1411 goto Failed; 1412 } 1413 1414 // Check whether touches should slip outside of the current foreground window. 1415 if (maskedAction == AMOTION_EVENT_ACTION_MOVE 1416 && entry->pointerCount == 1 1417 && mTempTouchState.isSlippery()) { 1418 const MotionSample* sample = &entry->firstSample; 1419 int32_t x = int32_t(sample->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X)); 1420 int32_t y = int32_t(sample->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y)); 1421 1422 const InputWindow* oldTouchedWindow = mTempTouchState.getFirstForegroundWindow(); 1423 const InputWindow* newTouchedWindow = findTouchedWindowAtLocked(x, y); 1424 if (oldTouchedWindow != newTouchedWindow && newTouchedWindow) { 1425#if DEBUG_FOCUS 1426 LOGD("Touch is slipping out of window %s into window %s.", 1427 oldTouchedWindow->name.string(), newTouchedWindow->name.string()); 1428#endif 1429 // Make a slippery exit from the old window. 1430 mTempTouchState.addOrUpdateWindow(oldTouchedWindow, 1431 InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT, BitSet32(0)); 1432 1433 // Make a slippery entrance into the new window. 1434 if (newTouchedWindow->supportsSplitTouch()) { 1435 isSplit = true; 1436 } 1437 1438 int32_t targetFlags = InputTarget::FLAG_FOREGROUND 1439 | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER; 1440 if (isSplit) { 1441 targetFlags |= InputTarget::FLAG_SPLIT; 1442 } 1443 if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) { 1444 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1445 } 1446 1447 BitSet32 pointerIds; 1448 if (isSplit) { 1449 pointerIds.markBit(entry->pointerProperties[0].id); 1450 } 1451 mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds); 1452 1453 // Split the batch here so we send exactly one sample. 1454 *outSplitBatchAfterSample = &entry->firstSample; 1455 } 1456 } 1457 } 1458 1459 if (newHoverWindow != mLastHoverWindow) { 1460 // Split the batch here so we send exactly one sample as part of ENTER or EXIT. 1461 *outSplitBatchAfterSample = &entry->firstSample; 1462 1463 // Let the previous window know that the hover sequence is over. 1464 if (mLastHoverWindow) { 1465#if DEBUG_HOVER 1466 LOGD("Sending hover exit event to window %s.", mLastHoverWindow->name.string()); 1467#endif 1468 mTempTouchState.addOrUpdateWindow(mLastHoverWindow, 1469 InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT, BitSet32(0)); 1470 } 1471 1472 // Let the new window know that the hover sequence is starting. 1473 if (newHoverWindow) { 1474#if DEBUG_HOVER 1475 LOGD("Sending hover enter event to window %s.", newHoverWindow->name.string()); 1476#endif 1477 mTempTouchState.addOrUpdateWindow(newHoverWindow, 1478 InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER, BitSet32(0)); 1479 } 1480 } 1481 1482 // Check permission to inject into all touched foreground windows and ensure there 1483 // is at least one touched foreground window. 1484 { 1485 bool haveForegroundWindow = false; 1486 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1487 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1488 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1489 haveForegroundWindow = true; 1490 if (! checkInjectionPermission(touchedWindow.window, entry->injectionState)) { 1491 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1492 injectionPermission = INJECTION_PERMISSION_DENIED; 1493 goto Failed; 1494 } 1495 } 1496 } 1497 if (! haveForegroundWindow) { 1498#if DEBUG_FOCUS 1499 LOGD("Dropping event because there is no touched foreground window to receive it."); 1500#endif 1501 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1502 goto Failed; 1503 } 1504 1505 // Permission granted to injection into all touched foreground windows. 1506 injectionPermission = INJECTION_PERMISSION_GRANTED; 1507 } 1508 1509 // Check whether windows listening for outside touches are owned by the same UID. If it is 1510 // set the policy flag that we will not reveal coordinate information to this window. 1511 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1512 const InputWindow* foregroundWindow = mTempTouchState.getFirstForegroundWindow(); 1513 const int32_t foregroundWindowUid = foregroundWindow->ownerUid; 1514 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1515 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1516 if (touchedWindow.targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 1517 const InputWindow* inputWindow = touchedWindow.window; 1518 if (inputWindow->ownerUid != foregroundWindowUid) { 1519 mTempTouchState.addOrUpdateWindow(inputWindow, 1520 InputTarget::FLAG_ZERO_COORDS, BitSet32(0)); 1521 } 1522 } 1523 } 1524 } 1525 1526 // Ensure all touched foreground windows are ready for new input. 1527 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1528 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1529 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1530 // If the touched window is paused then keep waiting. 1531 if (touchedWindow.window->paused) { 1532#if DEBUG_FOCUS 1533 LOGD("Waiting because touched window is paused."); 1534#endif 1535 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1536 NULL, touchedWindow.window, nextWakeupTime); 1537 goto Unresponsive; 1538 } 1539 1540 // If the touched window is still working on previous events then keep waiting. 1541 if (! isWindowFinishedWithPreviousInputLocked(touchedWindow.window)) { 1542#if DEBUG_FOCUS 1543 LOGD("Waiting because touched window still processing previous input."); 1544#endif 1545 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1546 NULL, touchedWindow.window, nextWakeupTime); 1547 goto Unresponsive; 1548 } 1549 } 1550 } 1551 1552 // If this is the first pointer going down and the touched window has a wallpaper 1553 // then also add the touched wallpaper windows so they are locked in for the duration 1554 // of the touch gesture. 1555 // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper 1556 // engine only supports touch events. We would need to add a mechanism similar 1557 // to View.onGenericMotionEvent to enable wallpapers to handle these events. 1558 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1559 const InputWindow* foregroundWindow = mTempTouchState.getFirstForegroundWindow(); 1560 if (foregroundWindow->hasWallpaper) { 1561 for (size_t i = 0; i < mWindows.size(); i++) { 1562 const InputWindow* window = & mWindows[i]; 1563 if (window->layoutParamsType == InputWindow::TYPE_WALLPAPER) { 1564 mTempTouchState.addOrUpdateWindow(window, 1565 InputTarget::FLAG_WINDOW_IS_OBSCURED 1566 | InputTarget::FLAG_DISPATCH_AS_IS, 1567 BitSet32(0)); 1568 } 1569 } 1570 } 1571 } 1572 1573 // Success! Output targets. 1574 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1575 1576 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1577 const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i); 1578 addWindowTargetLocked(touchedWindow.window, touchedWindow.targetFlags, 1579 touchedWindow.pointerIds); 1580 } 1581 1582 // Drop the outside or hover touch windows since we will not care about them 1583 // in the next iteration. 1584 mTempTouchState.filterNonAsIsTouchWindows(); 1585 1586Failed: 1587 // Check injection permission once and for all. 1588 if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) { 1589 if (checkInjectionPermission(NULL, entry->injectionState)) { 1590 injectionPermission = INJECTION_PERMISSION_GRANTED; 1591 } else { 1592 injectionPermission = INJECTION_PERMISSION_DENIED; 1593 } 1594 } 1595 1596 // Update final pieces of touch state if the injector had permission. 1597 if (injectionPermission == INJECTION_PERMISSION_GRANTED) { 1598 if (!wrongDevice) { 1599 if (switchedDevice) { 1600#if DEBUG_FOCUS 1601 LOGD("Conflicting pointer actions: Switched to a different device."); 1602#endif 1603 *outConflictingPointerActions = true; 1604 } 1605 1606 if (isHoverAction) { 1607 // Started hovering, therefore no longer down. 1608 if (mTouchState.down) { 1609#if DEBUG_FOCUS 1610 LOGD("Conflicting pointer actions: Hover received while pointer was down."); 1611#endif 1612 *outConflictingPointerActions = true; 1613 } 1614 mTouchState.reset(); 1615 if (maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER 1616 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1617 mTouchState.deviceId = entry->deviceId; 1618 mTouchState.source = entry->source; 1619 } 1620 } else if (maskedAction == AMOTION_EVENT_ACTION_UP 1621 || maskedAction == AMOTION_EVENT_ACTION_CANCEL) { 1622 // All pointers up or canceled. 1623 mTouchState.reset(); 1624 } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1625 // First pointer went down. 1626 if (mTouchState.down) { 1627#if DEBUG_FOCUS 1628 LOGD("Conflicting pointer actions: Down received while already down."); 1629#endif 1630 *outConflictingPointerActions = true; 1631 } 1632 mTouchState.copyFrom(mTempTouchState); 1633 } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 1634 // One pointer went up. 1635 if (isSplit) { 1636 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1637 uint32_t pointerId = entry->pointerProperties[pointerIndex].id; 1638 1639 for (size_t i = 0; i < mTempTouchState.windows.size(); ) { 1640 TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i); 1641 if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) { 1642 touchedWindow.pointerIds.clearBit(pointerId); 1643 if (touchedWindow.pointerIds.isEmpty()) { 1644 mTempTouchState.windows.removeAt(i); 1645 continue; 1646 } 1647 } 1648 i += 1; 1649 } 1650 } 1651 mTouchState.copyFrom(mTempTouchState); 1652 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1653 // Discard temporary touch state since it was only valid for this action. 1654 } else { 1655 // Save changes to touch state as-is for all other actions. 1656 mTouchState.copyFrom(mTempTouchState); 1657 } 1658 1659 // Update hover state. 1660 mLastHoverWindow = newHoverWindow; 1661 } 1662 } else { 1663#if DEBUG_FOCUS 1664 LOGD("Not updating touch focus because injection was denied."); 1665#endif 1666 } 1667 1668Unresponsive: 1669 // Reset temporary touch state to ensure we release unnecessary references to input channels. 1670 mTempTouchState.reset(); 1671 1672 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1673 updateDispatchStatisticsLocked(currentTime, entry, 1674 injectionResult, timeSpentWaitingForApplication); 1675#if DEBUG_FOCUS 1676 LOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, " 1677 "timeSpentWaitingForApplication=%0.1fms", 1678 injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0); 1679#endif 1680 return injectionResult; 1681} 1682 1683void InputDispatcher::addWindowTargetLocked(const InputWindow* window, int32_t targetFlags, 1684 BitSet32 pointerIds) { 1685 mCurrentInputTargets.push(); 1686 1687 InputTarget& target = mCurrentInputTargets.editTop(); 1688 target.inputChannel = window->inputChannel; 1689 target.flags = targetFlags; 1690 target.xOffset = - window->frameLeft; 1691 target.yOffset = - window->frameTop; 1692 target.scaleFactor = window->scaleFactor; 1693 target.pointerIds = pointerIds; 1694} 1695 1696void InputDispatcher::addMonitoringTargetsLocked() { 1697 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 1698 mCurrentInputTargets.push(); 1699 1700 InputTarget& target = mCurrentInputTargets.editTop(); 1701 target.inputChannel = mMonitoringChannels[i]; 1702 target.flags = InputTarget::FLAG_DISPATCH_AS_IS; 1703 target.xOffset = 0; 1704 target.yOffset = 0; 1705 target.pointerIds.clear(); 1706 target.scaleFactor = 1.0f; 1707 } 1708} 1709 1710bool InputDispatcher::checkInjectionPermission(const InputWindow* window, 1711 const InjectionState* injectionState) { 1712 if (injectionState 1713 && (window == NULL || window->ownerUid != injectionState->injectorUid) 1714 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1715 if (window) { 1716 LOGW("Permission denied: injecting event from pid %d uid %d to window " 1717 "with input channel %s owned by uid %d", 1718 injectionState->injectorPid, injectionState->injectorUid, 1719 window->inputChannel->getName().string(), 1720 window->ownerUid); 1721 } else { 1722 LOGW("Permission denied: injecting event from pid %d uid %d", 1723 injectionState->injectorPid, injectionState->injectorUid); 1724 } 1725 return false; 1726 } 1727 return true; 1728} 1729 1730bool InputDispatcher::isWindowObscuredAtPointLocked( 1731 const InputWindow* window, int32_t x, int32_t y) const { 1732 size_t numWindows = mWindows.size(); 1733 for (size_t i = 0; i < numWindows; i++) { 1734 const InputWindow* other = & mWindows.itemAt(i); 1735 if (other == window) { 1736 break; 1737 } 1738 if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) { 1739 return true; 1740 } 1741 } 1742 return false; 1743} 1744 1745bool InputDispatcher::isWindowFinishedWithPreviousInputLocked(const InputWindow* window) { 1746 ssize_t connectionIndex = getConnectionIndexLocked(window->inputChannel); 1747 if (connectionIndex >= 0) { 1748 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1749 return connection->outboundQueue.isEmpty(); 1750 } else { 1751 return true; 1752 } 1753} 1754 1755String8 InputDispatcher::getApplicationWindowLabelLocked(const InputApplication* application, 1756 const InputWindow* window) { 1757 if (application) { 1758 if (window) { 1759 String8 label(application->name); 1760 label.append(" - "); 1761 label.append(window->name); 1762 return label; 1763 } else { 1764 return application->name; 1765 } 1766 } else if (window) { 1767 return window->name; 1768 } else { 1769 return String8("<unknown application or window>"); 1770 } 1771} 1772 1773void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1774 int32_t eventType = POWER_MANAGER_OTHER_EVENT; 1775 switch (eventEntry->type) { 1776 case EventEntry::TYPE_MOTION: { 1777 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1778 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1779 return; 1780 } 1781 1782 if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) { 1783 eventType = POWER_MANAGER_TOUCH_EVENT; 1784 } 1785 break; 1786 } 1787 case EventEntry::TYPE_KEY: { 1788 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1789 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1790 return; 1791 } 1792 eventType = POWER_MANAGER_BUTTON_EVENT; 1793 break; 1794 } 1795 } 1796 1797 CommandEntry* commandEntry = postCommandLocked( 1798 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1799 commandEntry->eventTime = eventEntry->eventTime; 1800 commandEntry->userActivityEventType = eventType; 1801} 1802 1803void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1804 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1805 bool resumeWithAppendedMotionSample) { 1806#if DEBUG_DISPATCH_CYCLE 1807 LOGD("channel '%s' ~ prepareDispatchCycle - flags=%d, " 1808 "xOffset=%f, yOffset=%f, scaleFactor=%f" 1809 "pointerIds=0x%x, " 1810 "resumeWithAppendedMotionSample=%s", 1811 connection->getInputChannelName(), inputTarget->flags, 1812 inputTarget->xOffset, inputTarget->yOffset, 1813 inputTarget->scaleFactor, inputTarget->pointerIds.value, 1814 toString(resumeWithAppendedMotionSample)); 1815#endif 1816 1817 // Make sure we are never called for streaming when splitting across multiple windows. 1818 bool isSplit = inputTarget->flags & InputTarget::FLAG_SPLIT; 1819 LOG_ASSERT(! (resumeWithAppendedMotionSample && isSplit)); 1820 1821 // Skip this event if the connection status is not normal. 1822 // We don't want to enqueue additional outbound events if the connection is broken. 1823 if (connection->status != Connection::STATUS_NORMAL) { 1824#if DEBUG_DISPATCH_CYCLE 1825 LOGD("channel '%s' ~ Dropping event because the channel status is %s", 1826 connection->getInputChannelName(), connection->getStatusLabel()); 1827#endif 1828 return; 1829 } 1830 1831 // Split a motion event if needed. 1832 if (isSplit) { 1833 LOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION); 1834 1835 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1836 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1837 MotionEntry* splitMotionEntry = splitMotionEvent( 1838 originalMotionEntry, inputTarget->pointerIds); 1839 if (!splitMotionEntry) { 1840 return; // split event was dropped 1841 } 1842#if DEBUG_FOCUS 1843 LOGD("channel '%s' ~ Split motion event.", 1844 connection->getInputChannelName()); 1845 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1846#endif 1847 eventEntry = splitMotionEntry; 1848 } 1849 } 1850 1851 // Resume the dispatch cycle with a freshly appended motion sample. 1852 // First we check that the last dispatch entry in the outbound queue is for the same 1853 // motion event to which we appended the motion sample. If we find such a dispatch 1854 // entry, and if it is currently in progress then we try to stream the new sample. 1855 bool wasEmpty = connection->outboundQueue.isEmpty(); 1856 1857 if (! wasEmpty && resumeWithAppendedMotionSample) { 1858 DispatchEntry* motionEventDispatchEntry = 1859 connection->findQueuedDispatchEntryForEvent(eventEntry); 1860 if (motionEventDispatchEntry) { 1861 // If the dispatch entry is not in progress, then we must be busy dispatching an 1862 // earlier event. Not a problem, the motion event is on the outbound queue and will 1863 // be dispatched later. 1864 if (! motionEventDispatchEntry->inProgress) { 1865#if DEBUG_BATCHING 1866 LOGD("channel '%s' ~ Not streaming because the motion event has " 1867 "not yet been dispatched. " 1868 "(Waiting for earlier events to be consumed.)", 1869 connection->getInputChannelName()); 1870#endif 1871 return; 1872 } 1873 1874 // If the dispatch entry is in progress but it already has a tail of pending 1875 // motion samples, then it must mean that the shared memory buffer filled up. 1876 // Not a problem, when this dispatch cycle is finished, we will eventually start 1877 // a new dispatch cycle to process the tail and that tail includes the newly 1878 // appended motion sample. 1879 if (motionEventDispatchEntry->tailMotionSample) { 1880#if DEBUG_BATCHING 1881 LOGD("channel '%s' ~ Not streaming because no new samples can " 1882 "be appended to the motion event in this dispatch cycle. " 1883 "(Waiting for next dispatch cycle to start.)", 1884 connection->getInputChannelName()); 1885#endif 1886 return; 1887 } 1888 1889 // If the motion event was modified in flight, then we cannot stream the sample. 1890 if ((motionEventDispatchEntry->targetFlags & InputTarget::FLAG_DISPATCH_MASK) 1891 != InputTarget::FLAG_DISPATCH_AS_IS) { 1892#if DEBUG_BATCHING 1893 LOGD("channel '%s' ~ Not streaming because the motion event was not " 1894 "being dispatched as-is. " 1895 "(Waiting for next dispatch cycle to start.)", 1896 connection->getInputChannelName()); 1897#endif 1898 return; 1899 } 1900 1901 // The dispatch entry is in progress and is still potentially open for streaming. 1902 // Try to stream the new motion sample. This might fail if the consumer has already 1903 // consumed the motion event (or if the channel is broken). 1904 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1905 MotionSample* appendedMotionSample = motionEntry->lastSample; 1906 status_t status; 1907 if (motionEventDispatchEntry->scaleFactor == 1.0f) { 1908 status = connection->inputPublisher.appendMotionSample( 1909 appendedMotionSample->eventTime, appendedMotionSample->pointerCoords); 1910 } else { 1911 PointerCoords scaledCoords[MAX_POINTERS]; 1912 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 1913 scaledCoords[i] = appendedMotionSample->pointerCoords[i]; 1914 scaledCoords[i].scale(motionEventDispatchEntry->scaleFactor); 1915 } 1916 status = connection->inputPublisher.appendMotionSample( 1917 appendedMotionSample->eventTime, scaledCoords); 1918 } 1919 if (status == OK) { 1920#if DEBUG_BATCHING 1921 LOGD("channel '%s' ~ Successfully streamed new motion sample.", 1922 connection->getInputChannelName()); 1923#endif 1924 return; 1925 } 1926 1927#if DEBUG_BATCHING 1928 if (status == NO_MEMORY) { 1929 LOGD("channel '%s' ~ Could not append motion sample to currently " 1930 "dispatched move event because the shared memory buffer is full. " 1931 "(Waiting for next dispatch cycle to start.)", 1932 connection->getInputChannelName()); 1933 } else if (status == status_t(FAILED_TRANSACTION)) { 1934 LOGD("channel '%s' ~ Could not append motion sample to currently " 1935 "dispatched move event because the event has already been consumed. " 1936 "(Waiting for next dispatch cycle to start.)", 1937 connection->getInputChannelName()); 1938 } else { 1939 LOGD("channel '%s' ~ Could not append motion sample to currently " 1940 "dispatched move event due to an error, status=%d. " 1941 "(Waiting for next dispatch cycle to start.)", 1942 connection->getInputChannelName(), status); 1943 } 1944#endif 1945 // Failed to stream. Start a new tail of pending motion samples to dispatch 1946 // in the next cycle. 1947 motionEventDispatchEntry->tailMotionSample = appendedMotionSample; 1948 return; 1949 } 1950 } 1951 1952 // Enqueue dispatch entries for the requested modes. 1953 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1954 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT); 1955 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1956 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_OUTSIDE); 1957 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1958 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER); 1959 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1960 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_IS); 1961 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1962 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT); 1963 enqueueDispatchEntryLocked(connection, eventEntry, inputTarget, 1964 resumeWithAppendedMotionSample, InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER); 1965 1966 // If the outbound queue was previously empty, start the dispatch cycle going. 1967 if (wasEmpty && !connection->outboundQueue.isEmpty()) { 1968 activateConnectionLocked(connection.get()); 1969 startDispatchCycleLocked(currentTime, connection); 1970 } 1971} 1972 1973void InputDispatcher::enqueueDispatchEntryLocked( 1974 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1975 bool resumeWithAppendedMotionSample, int32_t dispatchMode) { 1976 int32_t inputTargetFlags = inputTarget->flags; 1977 if (!(inputTargetFlags & dispatchMode)) { 1978 return; 1979 } 1980 inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode; 1981 1982 // This is a new event. 1983 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1984 DispatchEntry* dispatchEntry = mAllocator.obtainDispatchEntry(eventEntry, // increments ref 1985 inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset, 1986 inputTarget->scaleFactor); 1987 if (dispatchEntry->hasForegroundTarget()) { 1988 incrementPendingForegroundDispatchesLocked(eventEntry); 1989 } 1990 1991 // Handle the case where we could not stream a new motion sample because the consumer has 1992 // already consumed the motion event (otherwise the corresponding dispatch entry would 1993 // still be in the outbound queue for this connection). We set the head motion sample 1994 // to the list starting with the newly appended motion sample. 1995 if (resumeWithAppendedMotionSample) { 1996#if DEBUG_BATCHING 1997 LOGD("channel '%s' ~ Preparing a new dispatch cycle for additional motion samples " 1998 "that cannot be streamed because the motion event has already been consumed.", 1999 connection->getInputChannelName()); 2000#endif 2001 MotionSample* appendedMotionSample = static_cast<MotionEntry*>(eventEntry)->lastSample; 2002 dispatchEntry->headMotionSample = appendedMotionSample; 2003 } 2004 2005 // Apply target flags and update the connection's input state. 2006 switch (eventEntry->type) { 2007 case EventEntry::TYPE_KEY: { 2008 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 2009 dispatchEntry->resolvedAction = keyEntry->action; 2010 dispatchEntry->resolvedFlags = keyEntry->flags; 2011 2012 if (!connection->inputState.trackKey(keyEntry, 2013 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) { 2014#if DEBUG_DISPATCH_CYCLE 2015 LOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent key event", 2016 connection->getInputChannelName()); 2017#endif 2018 return; // skip the inconsistent event 2019 } 2020 break; 2021 } 2022 2023 case EventEntry::TYPE_MOTION: { 2024 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 2025 if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) { 2026 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_OUTSIDE; 2027 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) { 2028 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_EXIT; 2029 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) { 2030 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER; 2031 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) { 2032 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_CANCEL; 2033 } else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER) { 2034 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_DOWN; 2035 } else { 2036 dispatchEntry->resolvedAction = motionEntry->action; 2037 } 2038 if (dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 2039 && !connection->inputState.isHovering( 2040 motionEntry->deviceId, motionEntry->source)) { 2041#if DEBUG_DISPATCH_CYCLE 2042 LOGD("channel '%s' ~ enqueueDispatchEntryLocked: filling in missing hover enter event", 2043 connection->getInputChannelName()); 2044#endif 2045 dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER; 2046 } 2047 2048 dispatchEntry->resolvedFlags = motionEntry->flags; 2049 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 2050 dispatchEntry->resolvedFlags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 2051 } 2052 2053 if (!connection->inputState.trackMotion(motionEntry, 2054 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) { 2055#if DEBUG_DISPATCH_CYCLE 2056 LOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion event", 2057 connection->getInputChannelName()); 2058#endif 2059 return; // skip the inconsistent event 2060 } 2061 break; 2062 } 2063 } 2064 2065 // Enqueue the dispatch entry. 2066 connection->outboundQueue.enqueueAtTail(dispatchEntry); 2067} 2068 2069void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 2070 const sp<Connection>& connection) { 2071#if DEBUG_DISPATCH_CYCLE 2072 LOGD("channel '%s' ~ startDispatchCycle", 2073 connection->getInputChannelName()); 2074#endif 2075 2076 LOG_ASSERT(connection->status == Connection::STATUS_NORMAL); 2077 LOG_ASSERT(! connection->outboundQueue.isEmpty()); 2078 2079 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2080 LOG_ASSERT(! dispatchEntry->inProgress); 2081 2082 // Mark the dispatch entry as in progress. 2083 dispatchEntry->inProgress = true; 2084 2085 // Publish the event. 2086 status_t status; 2087 EventEntry* eventEntry = dispatchEntry->eventEntry; 2088 switch (eventEntry->type) { 2089 case EventEntry::TYPE_KEY: { 2090 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 2091 2092 // Publish the key event. 2093 status = connection->inputPublisher.publishKeyEvent( 2094 keyEntry->deviceId, keyEntry->source, 2095 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags, 2096 keyEntry->keyCode, keyEntry->scanCode, 2097 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 2098 keyEntry->eventTime); 2099 2100 if (status) { 2101 LOGE("channel '%s' ~ Could not publish key event, " 2102 "status=%d", connection->getInputChannelName(), status); 2103 abortBrokenDispatchCycleLocked(currentTime, connection); 2104 return; 2105 } 2106 break; 2107 } 2108 2109 case EventEntry::TYPE_MOTION: { 2110 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 2111 2112 // If headMotionSample is non-NULL, then it points to the first new sample that we 2113 // were unable to dispatch during the previous cycle so we resume dispatching from 2114 // that point in the list of motion samples. 2115 // Otherwise, we just start from the first sample of the motion event. 2116 MotionSample* firstMotionSample = dispatchEntry->headMotionSample; 2117 if (! firstMotionSample) { 2118 firstMotionSample = & motionEntry->firstSample; 2119 } 2120 2121 PointerCoords scaledCoords[MAX_POINTERS]; 2122 const PointerCoords* usingCoords = firstMotionSample->pointerCoords; 2123 2124 // Set the X and Y offset depending on the input source. 2125 float xOffset, yOffset, scaleFactor; 2126 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER 2127 && !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) { 2128 scaleFactor = dispatchEntry->scaleFactor; 2129 xOffset = dispatchEntry->xOffset * scaleFactor; 2130 yOffset = dispatchEntry->yOffset * scaleFactor; 2131 if (scaleFactor != 1.0f) { 2132 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 2133 scaledCoords[i] = firstMotionSample->pointerCoords[i]; 2134 scaledCoords[i].scale(scaleFactor); 2135 } 2136 usingCoords = scaledCoords; 2137 } 2138 } else { 2139 xOffset = 0.0f; 2140 yOffset = 0.0f; 2141 scaleFactor = 1.0f; 2142 2143 // We don't want the dispatch target to know. 2144 if (dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS) { 2145 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 2146 scaledCoords[i].clear(); 2147 } 2148 usingCoords = scaledCoords; 2149 } 2150 } 2151 2152 // Publish the motion event and the first motion sample. 2153 status = connection->inputPublisher.publishMotionEvent( 2154 motionEntry->deviceId, motionEntry->source, 2155 dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags, 2156 motionEntry->edgeFlags, motionEntry->metaState, motionEntry->buttonState, 2157 xOffset, yOffset, 2158 motionEntry->xPrecision, motionEntry->yPrecision, 2159 motionEntry->downTime, firstMotionSample->eventTime, 2160 motionEntry->pointerCount, motionEntry->pointerProperties, 2161 usingCoords); 2162 2163 if (status) { 2164 LOGE("channel '%s' ~ Could not publish motion event, " 2165 "status=%d", connection->getInputChannelName(), status); 2166 abortBrokenDispatchCycleLocked(currentTime, connection); 2167 return; 2168 } 2169 2170 if (dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_MOVE 2171 || dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2172 // Append additional motion samples. 2173 MotionSample* nextMotionSample = firstMotionSample->next; 2174 for (; nextMotionSample != NULL; nextMotionSample = nextMotionSample->next) { 2175 if (usingCoords == scaledCoords) { 2176 if (!(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) { 2177 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 2178 scaledCoords[i] = nextMotionSample->pointerCoords[i]; 2179 scaledCoords[i].scale(scaleFactor); 2180 } 2181 } 2182 } else { 2183 usingCoords = nextMotionSample->pointerCoords; 2184 } 2185 status = connection->inputPublisher.appendMotionSample( 2186 nextMotionSample->eventTime, usingCoords); 2187 if (status == NO_MEMORY) { 2188#if DEBUG_DISPATCH_CYCLE 2189 LOGD("channel '%s' ~ Shared memory buffer full. Some motion samples will " 2190 "be sent in the next dispatch cycle.", 2191 connection->getInputChannelName()); 2192#endif 2193 break; 2194 } 2195 if (status != OK) { 2196 LOGE("channel '%s' ~ Could not append motion sample " 2197 "for a reason other than out of memory, status=%d", 2198 connection->getInputChannelName(), status); 2199 abortBrokenDispatchCycleLocked(currentTime, connection); 2200 return; 2201 } 2202 } 2203 2204 // Remember the next motion sample that we could not dispatch, in case we ran out 2205 // of space in the shared memory buffer. 2206 dispatchEntry->tailMotionSample = nextMotionSample; 2207 } 2208 break; 2209 } 2210 2211 default: { 2212 LOG_ASSERT(false); 2213 } 2214 } 2215 2216 // Send the dispatch signal. 2217 status = connection->inputPublisher.sendDispatchSignal(); 2218 if (status) { 2219 LOGE("channel '%s' ~ Could not send dispatch signal, status=%d", 2220 connection->getInputChannelName(), status); 2221 abortBrokenDispatchCycleLocked(currentTime, connection); 2222 return; 2223 } 2224 2225 // Record information about the newly started dispatch cycle. 2226 connection->lastEventTime = eventEntry->eventTime; 2227 connection->lastDispatchTime = currentTime; 2228 2229 // Notify other system components. 2230 onDispatchCycleStartedLocked(currentTime, connection); 2231} 2232 2233void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 2234 const sp<Connection>& connection, bool handled) { 2235#if DEBUG_DISPATCH_CYCLE 2236 LOGD("channel '%s' ~ finishDispatchCycle - %01.1fms since event, " 2237 "%01.1fms since dispatch, handled=%s", 2238 connection->getInputChannelName(), 2239 connection->getEventLatencyMillis(currentTime), 2240 connection->getDispatchLatencyMillis(currentTime), 2241 toString(handled)); 2242#endif 2243 2244 if (connection->status == Connection::STATUS_BROKEN 2245 || connection->status == Connection::STATUS_ZOMBIE) { 2246 return; 2247 } 2248 2249 // Reset the publisher since the event has been consumed. 2250 // We do this now so that the publisher can release some of its internal resources 2251 // while waiting for the next dispatch cycle to begin. 2252 status_t status = connection->inputPublisher.reset(); 2253 if (status) { 2254 LOGE("channel '%s' ~ Could not reset publisher, status=%d", 2255 connection->getInputChannelName(), status); 2256 abortBrokenDispatchCycleLocked(currentTime, connection); 2257 return; 2258 } 2259 2260 // Notify other system components and prepare to start the next dispatch cycle. 2261 onDispatchCycleFinishedLocked(currentTime, connection, handled); 2262} 2263 2264void InputDispatcher::startNextDispatchCycleLocked(nsecs_t currentTime, 2265 const sp<Connection>& connection) { 2266 // Start the next dispatch cycle for this connection. 2267 while (! connection->outboundQueue.isEmpty()) { 2268 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2269 if (dispatchEntry->inProgress) { 2270 // Finish or resume current event in progress. 2271 if (dispatchEntry->tailMotionSample) { 2272 // We have a tail of undispatched motion samples. 2273 // Reuse the same DispatchEntry and start a new cycle. 2274 dispatchEntry->inProgress = false; 2275 dispatchEntry->headMotionSample = dispatchEntry->tailMotionSample; 2276 dispatchEntry->tailMotionSample = NULL; 2277 startDispatchCycleLocked(currentTime, connection); 2278 return; 2279 } 2280 // Finished. 2281 connection->outboundQueue.dequeueAtHead(); 2282 if (dispatchEntry->hasForegroundTarget()) { 2283 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2284 } 2285 mAllocator.releaseDispatchEntry(dispatchEntry); 2286 } else { 2287 // If the head is not in progress, then we must have already dequeued the in 2288 // progress event, which means we actually aborted it. 2289 // So just start the next event for this connection. 2290 startDispatchCycleLocked(currentTime, connection); 2291 return; 2292 } 2293 } 2294 2295 // Outbound queue is empty, deactivate the connection. 2296 deactivateConnectionLocked(connection.get()); 2297} 2298 2299void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 2300 const sp<Connection>& connection) { 2301#if DEBUG_DISPATCH_CYCLE 2302 LOGD("channel '%s' ~ abortBrokenDispatchCycle", 2303 connection->getInputChannelName()); 2304#endif 2305 2306 // Clear the outbound queue. 2307 drainOutboundQueueLocked(connection.get()); 2308 2309 // The connection appears to be unrecoverably broken. 2310 // Ignore already broken or zombie connections. 2311 if (connection->status == Connection::STATUS_NORMAL) { 2312 connection->status = Connection::STATUS_BROKEN; 2313 2314 // Notify other system components. 2315 onDispatchCycleBrokenLocked(currentTime, connection); 2316 } 2317} 2318 2319void InputDispatcher::drainOutboundQueueLocked(Connection* connection) { 2320 while (! connection->outboundQueue.isEmpty()) { 2321 DispatchEntry* dispatchEntry = connection->outboundQueue.dequeueAtHead(); 2322 if (dispatchEntry->hasForegroundTarget()) { 2323 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2324 } 2325 mAllocator.releaseDispatchEntry(dispatchEntry); 2326 } 2327 2328 deactivateConnectionLocked(connection); 2329} 2330 2331int InputDispatcher::handleReceiveCallback(int receiveFd, int events, void* data) { 2332 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2333 2334 { // acquire lock 2335 AutoMutex _l(d->mLock); 2336 2337 ssize_t connectionIndex = d->mConnectionsByReceiveFd.indexOfKey(receiveFd); 2338 if (connectionIndex < 0) { 2339 LOGE("Received spurious receive callback for unknown input channel. " 2340 "fd=%d, events=0x%x", receiveFd, events); 2341 return 0; // remove the callback 2342 } 2343 2344 nsecs_t currentTime = now(); 2345 2346 sp<Connection> connection = d->mConnectionsByReceiveFd.valueAt(connectionIndex); 2347 if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) { 2348 LOGE("channel '%s' ~ Consumer closed input channel or an error occurred. " 2349 "events=0x%x", connection->getInputChannelName(), events); 2350 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2351 d->runCommandsLockedInterruptible(); 2352 return 0; // remove the callback 2353 } 2354 2355 if (! (events & ALOOPER_EVENT_INPUT)) { 2356 LOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2357 "events=0x%x", connection->getInputChannelName(), events); 2358 return 1; 2359 } 2360 2361 bool handled = false; 2362 status_t status = connection->inputPublisher.receiveFinishedSignal(&handled); 2363 if (status) { 2364 LOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2365 connection->getInputChannelName(), status); 2366 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2367 d->runCommandsLockedInterruptible(); 2368 return 0; // remove the callback 2369 } 2370 2371 d->finishDispatchCycleLocked(currentTime, connection, handled); 2372 d->runCommandsLockedInterruptible(); 2373 return 1; 2374 } // release lock 2375} 2376 2377void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2378 const CancelationOptions& options) { 2379 for (size_t i = 0; i < mConnectionsByReceiveFd.size(); i++) { 2380 synthesizeCancelationEventsForConnectionLocked( 2381 mConnectionsByReceiveFd.valueAt(i), options); 2382 } 2383} 2384 2385void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2386 const sp<InputChannel>& channel, const CancelationOptions& options) { 2387 ssize_t index = getConnectionIndexLocked(channel); 2388 if (index >= 0) { 2389 synthesizeCancelationEventsForConnectionLocked( 2390 mConnectionsByReceiveFd.valueAt(index), options); 2391 } 2392} 2393 2394void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2395 const sp<Connection>& connection, const CancelationOptions& options) { 2396 nsecs_t currentTime = now(); 2397 2398 mTempCancelationEvents.clear(); 2399 connection->inputState.synthesizeCancelationEvents(currentTime, & mAllocator, 2400 mTempCancelationEvents, options); 2401 2402 if (! mTempCancelationEvents.isEmpty() 2403 && connection->status != Connection::STATUS_BROKEN) { 2404#if DEBUG_OUTBOUND_EVENT_DETAILS 2405 LOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2406 "with reality: %s, mode=%d.", 2407 connection->getInputChannelName(), mTempCancelationEvents.size(), 2408 options.reason, options.mode); 2409#endif 2410 for (size_t i = 0; i < mTempCancelationEvents.size(); i++) { 2411 EventEntry* cancelationEventEntry = mTempCancelationEvents.itemAt(i); 2412 switch (cancelationEventEntry->type) { 2413 case EventEntry::TYPE_KEY: 2414 logOutboundKeyDetailsLocked("cancel - ", 2415 static_cast<KeyEntry*>(cancelationEventEntry)); 2416 break; 2417 case EventEntry::TYPE_MOTION: 2418 logOutboundMotionDetailsLocked("cancel - ", 2419 static_cast<MotionEntry*>(cancelationEventEntry)); 2420 break; 2421 } 2422 2423 InputTarget target; 2424 const InputWindow* window = getWindowLocked(connection->inputChannel); 2425 if (window) { 2426 target.xOffset = -window->frameLeft; 2427 target.yOffset = -window->frameTop; 2428 target.scaleFactor = window->scaleFactor; 2429 } else { 2430 target.xOffset = 0; 2431 target.yOffset = 0; 2432 target.scaleFactor = 1.0f; 2433 } 2434 target.inputChannel = connection->inputChannel; 2435 target.flags = InputTarget::FLAG_DISPATCH_AS_IS; 2436 2437 enqueueDispatchEntryLocked(connection, cancelationEventEntry, // increments ref 2438 &target, false, InputTarget::FLAG_DISPATCH_AS_IS); 2439 2440 mAllocator.releaseEventEntry(cancelationEventEntry); 2441 } 2442 2443 if (!connection->outboundQueue.headSentinel.next->inProgress) { 2444 startDispatchCycleLocked(currentTime, connection); 2445 } 2446 } 2447} 2448 2449InputDispatcher::MotionEntry* 2450InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2451 LOG_ASSERT(pointerIds.value != 0); 2452 2453 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2454 PointerProperties splitPointerProperties[MAX_POINTERS]; 2455 PointerCoords splitPointerCoords[MAX_POINTERS]; 2456 2457 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2458 uint32_t splitPointerCount = 0; 2459 2460 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2461 originalPointerIndex++) { 2462 const PointerProperties& pointerProperties = 2463 originalMotionEntry->pointerProperties[originalPointerIndex]; 2464 uint32_t pointerId = uint32_t(pointerProperties.id); 2465 if (pointerIds.hasBit(pointerId)) { 2466 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2467 splitPointerProperties[splitPointerCount].copyFrom(pointerProperties); 2468 splitPointerCoords[splitPointerCount].copyFrom( 2469 originalMotionEntry->firstSample.pointerCoords[originalPointerIndex]); 2470 splitPointerCount += 1; 2471 } 2472 } 2473 2474 if (splitPointerCount != pointerIds.count()) { 2475 // This is bad. We are missing some of the pointers that we expected to deliver. 2476 // Most likely this indicates that we received an ACTION_MOVE events that has 2477 // different pointer ids than we expected based on the previous ACTION_DOWN 2478 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2479 // in this way. 2480 LOGW("Dropping split motion event because the pointer count is %d but " 2481 "we expected there to be %d pointers. This probably means we received " 2482 "a broken sequence of pointer ids from the input device.", 2483 splitPointerCount, pointerIds.count()); 2484 return NULL; 2485 } 2486 2487 int32_t action = originalMotionEntry->action; 2488 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2489 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2490 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2491 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2492 const PointerProperties& pointerProperties = 2493 originalMotionEntry->pointerProperties[originalPointerIndex]; 2494 uint32_t pointerId = uint32_t(pointerProperties.id); 2495 if (pointerIds.hasBit(pointerId)) { 2496 if (pointerIds.count() == 1) { 2497 // The first/last pointer went down/up. 2498 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2499 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2500 } else { 2501 // A secondary pointer went down/up. 2502 uint32_t splitPointerIndex = 0; 2503 while (pointerId != uint32_t(splitPointerProperties[splitPointerIndex].id)) { 2504 splitPointerIndex += 1; 2505 } 2506 action = maskedAction | (splitPointerIndex 2507 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2508 } 2509 } else { 2510 // An unrelated pointer changed. 2511 action = AMOTION_EVENT_ACTION_MOVE; 2512 } 2513 } 2514 2515 MotionEntry* splitMotionEntry = mAllocator.obtainMotionEntry( 2516 originalMotionEntry->eventTime, 2517 originalMotionEntry->deviceId, 2518 originalMotionEntry->source, 2519 originalMotionEntry->policyFlags, 2520 action, 2521 originalMotionEntry->flags, 2522 originalMotionEntry->metaState, 2523 originalMotionEntry->buttonState, 2524 originalMotionEntry->edgeFlags, 2525 originalMotionEntry->xPrecision, 2526 originalMotionEntry->yPrecision, 2527 originalMotionEntry->downTime, 2528 splitPointerCount, splitPointerProperties, splitPointerCoords); 2529 2530 for (MotionSample* originalMotionSample = originalMotionEntry->firstSample.next; 2531 originalMotionSample != NULL; originalMotionSample = originalMotionSample->next) { 2532 for (uint32_t splitPointerIndex = 0; splitPointerIndex < splitPointerCount; 2533 splitPointerIndex++) { 2534 uint32_t originalPointerIndex = splitPointerIndexMap[splitPointerIndex]; 2535 splitPointerCoords[splitPointerIndex].copyFrom( 2536 originalMotionSample->pointerCoords[originalPointerIndex]); 2537 } 2538 2539 mAllocator.appendMotionSample(splitMotionEntry, originalMotionSample->eventTime, 2540 splitPointerCoords); 2541 } 2542 2543 if (originalMotionEntry->injectionState) { 2544 splitMotionEntry->injectionState = originalMotionEntry->injectionState; 2545 splitMotionEntry->injectionState->refCount += 1; 2546 } 2547 2548 return splitMotionEntry; 2549} 2550 2551void InputDispatcher::notifyConfigurationChanged(nsecs_t eventTime) { 2552#if DEBUG_INBOUND_EVENT_DETAILS 2553 LOGD("notifyConfigurationChanged - eventTime=%lld", eventTime); 2554#endif 2555 2556 bool needWake; 2557 { // acquire lock 2558 AutoMutex _l(mLock); 2559 2560 ConfigurationChangedEntry* newEntry = mAllocator.obtainConfigurationChangedEntry(eventTime); 2561 needWake = enqueueInboundEventLocked(newEntry); 2562 } // release lock 2563 2564 if (needWake) { 2565 mLooper->wake(); 2566 } 2567} 2568 2569void InputDispatcher::notifyKey(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2570 uint32_t policyFlags, int32_t action, int32_t flags, 2571 int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime) { 2572#if DEBUG_INBOUND_EVENT_DETAILS 2573 LOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2574 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2575 eventTime, deviceId, source, policyFlags, action, flags, 2576 keyCode, scanCode, metaState, downTime); 2577#endif 2578 if (! validateKeyEvent(action)) { 2579 return; 2580 } 2581 2582 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2583 policyFlags |= POLICY_FLAG_VIRTUAL; 2584 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2585 } 2586 if (policyFlags & POLICY_FLAG_ALT) { 2587 metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON; 2588 } 2589 if (policyFlags & POLICY_FLAG_ALT_GR) { 2590 metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON; 2591 } 2592 if (policyFlags & POLICY_FLAG_SHIFT) { 2593 metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON; 2594 } 2595 if (policyFlags & POLICY_FLAG_CAPS_LOCK) { 2596 metaState |= AMETA_CAPS_LOCK_ON; 2597 } 2598 if (policyFlags & POLICY_FLAG_FUNCTION) { 2599 metaState |= AMETA_FUNCTION_ON; 2600 } 2601 2602 policyFlags |= POLICY_FLAG_TRUSTED; 2603 2604 KeyEvent event; 2605 event.initialize(deviceId, source, action, flags, keyCode, scanCode, 2606 metaState, 0, downTime, eventTime); 2607 2608 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2609 2610 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2611 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2612 } 2613 2614 bool needWake; 2615 { // acquire lock 2616 mLock.lock(); 2617 2618 if (mInputFilterEnabled) { 2619 mLock.unlock(); 2620 2621 policyFlags |= POLICY_FLAG_FILTERED; 2622 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2623 return; // event was consumed by the filter 2624 } 2625 2626 mLock.lock(); 2627 } 2628 2629 int32_t repeatCount = 0; 2630 KeyEntry* newEntry = mAllocator.obtainKeyEntry(eventTime, 2631 deviceId, source, policyFlags, action, flags, keyCode, scanCode, 2632 metaState, repeatCount, downTime); 2633 2634 needWake = enqueueInboundEventLocked(newEntry); 2635 mLock.unlock(); 2636 } // release lock 2637 2638 if (needWake) { 2639 mLooper->wake(); 2640 } 2641} 2642 2643void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2644 uint32_t policyFlags, int32_t action, int32_t flags, 2645 int32_t metaState, int32_t buttonState, int32_t edgeFlags, 2646 uint32_t pointerCount, const PointerProperties* pointerProperties, 2647 const PointerCoords* pointerCoords, 2648 float xPrecision, float yPrecision, nsecs_t downTime) { 2649#if DEBUG_INBOUND_EVENT_DETAILS 2650 LOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2651 "action=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x, edgeFlags=0x%x, " 2652 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2653 eventTime, deviceId, source, policyFlags, action, flags, 2654 metaState, buttonState, edgeFlags, 2655 xPrecision, yPrecision, downTime); 2656 for (uint32_t i = 0; i < pointerCount; i++) { 2657 LOGD(" Pointer %d: id=%d, toolType=%d, " 2658 "x=%f, y=%f, pressure=%f, size=%f, " 2659 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2660 "orientation=%f", 2661 i, pointerProperties[i].id, 2662 pointerProperties[i].toolType, 2663 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2664 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2665 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2666 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2667 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2668 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2669 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2670 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2671 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2672 } 2673#endif 2674 if (! validateMotionEvent(action, pointerCount, pointerProperties)) { 2675 return; 2676 } 2677 2678 policyFlags |= POLICY_FLAG_TRUSTED; 2679 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2680 2681 bool needWake; 2682 { // acquire lock 2683 mLock.lock(); 2684 2685 if (mInputFilterEnabled) { 2686 mLock.unlock(); 2687 2688 MotionEvent event; 2689 event.initialize(deviceId, source, action, flags, edgeFlags, metaState, 2690 buttonState, 0, 0, 2691 xPrecision, yPrecision, downTime, eventTime, 2692 pointerCount, pointerProperties, pointerCoords); 2693 2694 policyFlags |= POLICY_FLAG_FILTERED; 2695 if (!mPolicy->filterInputEvent(&event, policyFlags)) { 2696 return; // event was consumed by the filter 2697 } 2698 2699 mLock.lock(); 2700 } 2701 2702 // Attempt batching and streaming of move events. 2703 if (action == AMOTION_EVENT_ACTION_MOVE 2704 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2705 // BATCHING CASE 2706 // 2707 // Try to append a move sample to the tail of the inbound queue for this device. 2708 // Give up if we encounter a non-move motion event for this device since that 2709 // means we cannot append any new samples until a new motion event has started. 2710 for (EventEntry* entry = mInboundQueue.tailSentinel.prev; 2711 entry != & mInboundQueue.headSentinel; entry = entry->prev) { 2712 if (entry->type != EventEntry::TYPE_MOTION) { 2713 // Keep looking for motion events. 2714 continue; 2715 } 2716 2717 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 2718 if (motionEntry->deviceId != deviceId 2719 || motionEntry->source != source) { 2720 // Keep looking for this device and source. 2721 continue; 2722 } 2723 2724 if (!motionEntry->canAppendSamples(action, pointerCount, pointerProperties)) { 2725 // Last motion event in the queue for this device and source is 2726 // not compatible for appending new samples. Stop here. 2727 goto NoBatchingOrStreaming; 2728 } 2729 2730 // Do the batching magic. 2731 batchMotionLocked(motionEntry, eventTime, metaState, pointerCoords, 2732 "most recent motion event for this device and source in the inbound queue"); 2733 mLock.unlock(); 2734 return; // done! 2735 } 2736 2737 // BATCHING ONTO PENDING EVENT CASE 2738 // 2739 // Try to append a move sample to the currently pending event, if there is one. 2740 // We can do this as long as we are still waiting to find the targets for the 2741 // event. Once the targets are locked-in we can only do streaming. 2742 if (mPendingEvent 2743 && (!mPendingEvent->dispatchInProgress || !mCurrentInputTargetsValid) 2744 && mPendingEvent->type == EventEntry::TYPE_MOTION) { 2745 MotionEntry* motionEntry = static_cast<MotionEntry*>(mPendingEvent); 2746 if (motionEntry->deviceId == deviceId && motionEntry->source == source) { 2747 if (!motionEntry->canAppendSamples(action, pointerCount, pointerProperties)) { 2748 // Pending motion event is for this device and source but it is 2749 // not compatible for appending new samples. Stop here. 2750 goto NoBatchingOrStreaming; 2751 } 2752 2753 // Do the batching magic. 2754 batchMotionLocked(motionEntry, eventTime, metaState, pointerCoords, 2755 "pending motion event"); 2756 mLock.unlock(); 2757 return; // done! 2758 } 2759 } 2760 2761 // STREAMING CASE 2762 // 2763 // There is no pending motion event (of any kind) for this device in the inbound queue. 2764 // Search the outbound queue for the current foreground targets to find a dispatched 2765 // motion event that is still in progress. If found, then, appen the new sample to 2766 // that event and push it out to all current targets. The logic in 2767 // prepareDispatchCycleLocked takes care of the case where some targets may 2768 // already have consumed the motion event by starting a new dispatch cycle if needed. 2769 if (mCurrentInputTargetsValid) { 2770 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 2771 const InputTarget& inputTarget = mCurrentInputTargets[i]; 2772 if ((inputTarget.flags & InputTarget::FLAG_FOREGROUND) == 0) { 2773 // Skip non-foreground targets. We only want to stream if there is at 2774 // least one foreground target whose dispatch is still in progress. 2775 continue; 2776 } 2777 2778 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 2779 if (connectionIndex < 0) { 2780 // Connection must no longer be valid. 2781 continue; 2782 } 2783 2784 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 2785 if (connection->outboundQueue.isEmpty()) { 2786 // This foreground target has an empty outbound queue. 2787 continue; 2788 } 2789 2790 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2791 if (! dispatchEntry->inProgress 2792 || dispatchEntry->eventEntry->type != EventEntry::TYPE_MOTION 2793 || dispatchEntry->isSplit()) { 2794 // No motion event is being dispatched, or it is being split across 2795 // windows in which case we cannot stream. 2796 continue; 2797 } 2798 2799 MotionEntry* motionEntry = static_cast<MotionEntry*>( 2800 dispatchEntry->eventEntry); 2801 if (motionEntry->action != action 2802 || motionEntry->deviceId != deviceId 2803 || motionEntry->source != source 2804 || motionEntry->pointerCount != pointerCount 2805 || motionEntry->isInjected()) { 2806 // The motion event is not compatible with this move. 2807 continue; 2808 } 2809 2810 if (action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2811 if (!mLastHoverWindow) { 2812#if DEBUG_BATCHING 2813 LOGD("Not streaming hover move because there is no " 2814 "last hovered window."); 2815#endif 2816 goto NoBatchingOrStreaming; 2817 } 2818 2819 const InputWindow* hoverWindow = findTouchedWindowAtLocked( 2820 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X), 2821 pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y)); 2822 if (mLastHoverWindow != hoverWindow) { 2823#if DEBUG_BATCHING 2824 LOGD("Not streaming hover move because the last hovered window " 2825 "is '%s' but the currently hovered window is '%s'.", 2826 mLastHoverWindow->name.string(), 2827 hoverWindow ? hoverWindow->name.string() : "<null>"); 2828#endif 2829 goto NoBatchingOrStreaming; 2830 } 2831 } 2832 2833 // Hurray! This foreground target is currently dispatching a move event 2834 // that we can stream onto. Append the motion sample and resume dispatch. 2835 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2836#if DEBUG_BATCHING 2837 LOGD("Appended motion sample onto batch for most recently dispatched " 2838 "motion event for this device and source in the outbound queues. " 2839 "Attempting to stream the motion sample."); 2840#endif 2841 nsecs_t currentTime = now(); 2842 dispatchEventToCurrentInputTargetsLocked(currentTime, motionEntry, 2843 true /*resumeWithAppendedMotionSample*/); 2844 2845 runCommandsLockedInterruptible(); 2846 mLock.unlock(); 2847 return; // done! 2848 } 2849 } 2850 2851NoBatchingOrStreaming:; 2852 } 2853 2854 // Just enqueue a new motion event. 2855 MotionEntry* newEntry = mAllocator.obtainMotionEntry(eventTime, 2856 deviceId, source, policyFlags, action, flags, metaState, buttonState, edgeFlags, 2857 xPrecision, yPrecision, downTime, 2858 pointerCount, pointerProperties, pointerCoords); 2859 2860 needWake = enqueueInboundEventLocked(newEntry); 2861 mLock.unlock(); 2862 } // release lock 2863 2864 if (needWake) { 2865 mLooper->wake(); 2866 } 2867} 2868 2869void InputDispatcher::batchMotionLocked(MotionEntry* entry, nsecs_t eventTime, 2870 int32_t metaState, const PointerCoords* pointerCoords, const char* eventDescription) { 2871 // Combine meta states. 2872 entry->metaState |= metaState; 2873 2874 // Coalesce this sample if not enough time has elapsed since the last sample was 2875 // initially appended to the batch. 2876 MotionSample* lastSample = entry->lastSample; 2877 long interval = eventTime - lastSample->eventTimeBeforeCoalescing; 2878 if (interval <= MOTION_SAMPLE_COALESCE_INTERVAL) { 2879 uint32_t pointerCount = entry->pointerCount; 2880 for (uint32_t i = 0; i < pointerCount; i++) { 2881 lastSample->pointerCoords[i].copyFrom(pointerCoords[i]); 2882 } 2883 lastSample->eventTime = eventTime; 2884#if DEBUG_BATCHING 2885 LOGD("Coalesced motion into last sample of batch for %s, events were %0.3f ms apart", 2886 eventDescription, interval * 0.000001f); 2887#endif 2888 return; 2889 } 2890 2891 // Append the sample. 2892 mAllocator.appendMotionSample(entry, eventTime, pointerCoords); 2893#if DEBUG_BATCHING 2894 LOGD("Appended motion sample onto batch for %s, events were %0.3f ms apart", 2895 eventDescription, interval * 0.000001f); 2896#endif 2897} 2898 2899void InputDispatcher::notifySwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, 2900 uint32_t policyFlags) { 2901#if DEBUG_INBOUND_EVENT_DETAILS 2902 LOGD("notifySwitch - switchCode=%d, switchValue=%d, policyFlags=0x%x", 2903 switchCode, switchValue, policyFlags); 2904#endif 2905 2906 policyFlags |= POLICY_FLAG_TRUSTED; 2907 mPolicy->notifySwitch(when, switchCode, switchValue, policyFlags); 2908} 2909 2910int32_t InputDispatcher::injectInputEvent(const InputEvent* event, 2911 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis, 2912 uint32_t policyFlags) { 2913#if DEBUG_INBOUND_EVENT_DETAILS 2914 LOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2915 "syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x", 2916 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags); 2917#endif 2918 2919 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2920 2921 policyFlags |= POLICY_FLAG_INJECTED; 2922 if (hasInjectionPermission(injectorPid, injectorUid)) { 2923 policyFlags |= POLICY_FLAG_TRUSTED; 2924 } 2925 2926 EventEntry* injectedEntry; 2927 switch (event->getType()) { 2928 case AINPUT_EVENT_TYPE_KEY: { 2929 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2930 int32_t action = keyEvent->getAction(); 2931 if (! validateKeyEvent(action)) { 2932 return INPUT_EVENT_INJECTION_FAILED; 2933 } 2934 2935 int32_t flags = keyEvent->getFlags(); 2936 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2937 policyFlags |= POLICY_FLAG_VIRTUAL; 2938 } 2939 2940 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2941 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2942 } 2943 2944 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2945 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2946 } 2947 2948 mLock.lock(); 2949 injectedEntry = mAllocator.obtainKeyEntry(keyEvent->getEventTime(), 2950 keyEvent->getDeviceId(), keyEvent->getSource(), 2951 policyFlags, action, flags, 2952 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2953 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2954 break; 2955 } 2956 2957 case AINPUT_EVENT_TYPE_MOTION: { 2958 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2959 int32_t action = motionEvent->getAction(); 2960 size_t pointerCount = motionEvent->getPointerCount(); 2961 const PointerProperties* pointerProperties = motionEvent->getPointerProperties(); 2962 if (! validateMotionEvent(action, pointerCount, pointerProperties)) { 2963 return INPUT_EVENT_INJECTION_FAILED; 2964 } 2965 2966 if (!(policyFlags & POLICY_FLAG_FILTERED)) { 2967 nsecs_t eventTime = motionEvent->getEventTime(); 2968 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2969 } 2970 2971 mLock.lock(); 2972 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2973 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2974 MotionEntry* motionEntry = mAllocator.obtainMotionEntry(*sampleEventTimes, 2975 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2976 action, motionEvent->getFlags(), 2977 motionEvent->getMetaState(), motionEvent->getButtonState(), 2978 motionEvent->getEdgeFlags(), 2979 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2980 motionEvent->getDownTime(), uint32_t(pointerCount), 2981 pointerProperties, samplePointerCoords); 2982 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2983 sampleEventTimes += 1; 2984 samplePointerCoords += pointerCount; 2985 mAllocator.appendMotionSample(motionEntry, *sampleEventTimes, samplePointerCoords); 2986 } 2987 injectedEntry = motionEntry; 2988 break; 2989 } 2990 2991 default: 2992 LOGW("Cannot inject event of type %d", event->getType()); 2993 return INPUT_EVENT_INJECTION_FAILED; 2994 } 2995 2996 InjectionState* injectionState = mAllocator.obtainInjectionState(injectorPid, injectorUid); 2997 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2998 injectionState->injectionIsAsync = true; 2999 } 3000 3001 injectionState->refCount += 1; 3002 injectedEntry->injectionState = injectionState; 3003 3004 bool needWake = enqueueInboundEventLocked(injectedEntry); 3005 mLock.unlock(); 3006 3007 if (needWake) { 3008 mLooper->wake(); 3009 } 3010 3011 int32_t injectionResult; 3012 { // acquire lock 3013 AutoMutex _l(mLock); 3014 3015 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 3016 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 3017 } else { 3018 for (;;) { 3019 injectionResult = injectionState->injectionResult; 3020 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 3021 break; 3022 } 3023 3024 nsecs_t remainingTimeout = endTime - now(); 3025 if (remainingTimeout <= 0) { 3026#if DEBUG_INJECTION 3027 LOGD("injectInputEvent - Timed out waiting for injection result " 3028 "to become available."); 3029#endif 3030 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 3031 break; 3032 } 3033 3034 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 3035 } 3036 3037 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 3038 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 3039 while (injectionState->pendingForegroundDispatches != 0) { 3040#if DEBUG_INJECTION 3041 LOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 3042 injectionState->pendingForegroundDispatches); 3043#endif 3044 nsecs_t remainingTimeout = endTime - now(); 3045 if (remainingTimeout <= 0) { 3046#if DEBUG_INJECTION 3047 LOGD("injectInputEvent - Timed out waiting for pending foreground " 3048 "dispatches to finish."); 3049#endif 3050 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 3051 break; 3052 } 3053 3054 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 3055 } 3056 } 3057 } 3058 3059 mAllocator.releaseInjectionState(injectionState); 3060 } // release lock 3061 3062#if DEBUG_INJECTION 3063 LOGD("injectInputEvent - Finished with result %d. " 3064 "injectorPid=%d, injectorUid=%d", 3065 injectionResult, injectorPid, injectorUid); 3066#endif 3067 3068 return injectionResult; 3069} 3070 3071bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 3072 return injectorUid == 0 3073 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 3074} 3075 3076void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 3077 InjectionState* injectionState = entry->injectionState; 3078 if (injectionState) { 3079#if DEBUG_INJECTION 3080 LOGD("Setting input event injection result to %d. " 3081 "injectorPid=%d, injectorUid=%d", 3082 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 3083#endif 3084 3085 if (injectionState->injectionIsAsync 3086 && !(entry->policyFlags & POLICY_FLAG_FILTERED)) { 3087 // Log the outcome since the injector did not wait for the injection result. 3088 switch (injectionResult) { 3089 case INPUT_EVENT_INJECTION_SUCCEEDED: 3090 LOGV("Asynchronous input event injection succeeded."); 3091 break; 3092 case INPUT_EVENT_INJECTION_FAILED: 3093 LOGW("Asynchronous input event injection failed."); 3094 break; 3095 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 3096 LOGW("Asynchronous input event injection permission denied."); 3097 break; 3098 case INPUT_EVENT_INJECTION_TIMED_OUT: 3099 LOGW("Asynchronous input event injection timed out."); 3100 break; 3101 } 3102 } 3103 3104 injectionState->injectionResult = injectionResult; 3105 mInjectionResultAvailableCondition.broadcast(); 3106 } 3107} 3108 3109void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 3110 InjectionState* injectionState = entry->injectionState; 3111 if (injectionState) { 3112 injectionState->pendingForegroundDispatches += 1; 3113 } 3114} 3115 3116void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 3117 InjectionState* injectionState = entry->injectionState; 3118 if (injectionState) { 3119 injectionState->pendingForegroundDispatches -= 1; 3120 3121 if (injectionState->pendingForegroundDispatches == 0) { 3122 mInjectionSyncFinishedCondition.broadcast(); 3123 } 3124 } 3125} 3126 3127const InputWindow* InputDispatcher::getWindowLocked(const sp<InputChannel>& inputChannel) { 3128 for (size_t i = 0; i < mWindows.size(); i++) { 3129 const InputWindow* window = & mWindows[i]; 3130 if (window->inputChannel == inputChannel) { 3131 return window; 3132 } 3133 } 3134 return NULL; 3135} 3136 3137void InputDispatcher::setInputWindows(const Vector<InputWindow>& inputWindows) { 3138#if DEBUG_FOCUS 3139 LOGD("setInputWindows"); 3140#endif 3141 { // acquire lock 3142 AutoMutex _l(mLock); 3143 3144 // Clear old window pointers. 3145 sp<InputChannel> oldFocusedWindowChannel; 3146 if (mFocusedWindow) { 3147 oldFocusedWindowChannel = mFocusedWindow->inputChannel; 3148 mFocusedWindow = NULL; 3149 } 3150 sp<InputChannel> oldLastHoverWindowChannel; 3151 if (mLastHoverWindow) { 3152 oldLastHoverWindowChannel = mLastHoverWindow->inputChannel; 3153 mLastHoverWindow = NULL; 3154 } 3155 3156 mWindows.clear(); 3157 3158 // Loop over new windows and rebuild the necessary window pointers for 3159 // tracking focus and touch. 3160 mWindows.appendVector(inputWindows); 3161 3162 size_t numWindows = mWindows.size(); 3163 for (size_t i = 0; i < numWindows; i++) { 3164 const InputWindow* window = & mWindows.itemAt(i); 3165 if (window->hasFocus) { 3166 mFocusedWindow = window; 3167 break; 3168 } 3169 } 3170 3171 if (oldFocusedWindowChannel != NULL) { 3172 if (!mFocusedWindow || oldFocusedWindowChannel != mFocusedWindow->inputChannel) { 3173#if DEBUG_FOCUS 3174 LOGD("Focus left window: %s", 3175 oldFocusedWindowChannel->getName().string()); 3176#endif 3177 CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, 3178 "focus left window"); 3179 synthesizeCancelationEventsForInputChannelLocked(oldFocusedWindowChannel, options); 3180 oldFocusedWindowChannel.clear(); 3181 } 3182 } 3183 if (mFocusedWindow && oldFocusedWindowChannel == NULL) { 3184#if DEBUG_FOCUS 3185 LOGD("Focus entered window: %s", 3186 mFocusedWindow->inputChannel->getName().string()); 3187#endif 3188 } 3189 3190 for (size_t i = 0; i < mTouchState.windows.size(); ) { 3191 TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i); 3192 const InputWindow* window = getWindowLocked(touchedWindow.channel); 3193 if (window) { 3194 touchedWindow.window = window; 3195 i += 1; 3196 } else { 3197#if DEBUG_FOCUS 3198 LOGD("Touched window was removed: %s", touchedWindow.channel->getName().string()); 3199#endif 3200 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 3201 "touched window was removed"); 3202 synthesizeCancelationEventsForInputChannelLocked(touchedWindow.channel, options); 3203 mTouchState.windows.removeAt(i); 3204 } 3205 } 3206 3207 // Recover the last hovered window. 3208 if (oldLastHoverWindowChannel != NULL) { 3209 mLastHoverWindow = getWindowLocked(oldLastHoverWindowChannel); 3210 oldLastHoverWindowChannel.clear(); 3211 } 3212 3213#if DEBUG_FOCUS 3214 //logDispatchStateLocked(); 3215#endif 3216 } // release lock 3217 3218 // Wake up poll loop since it may need to make new input dispatching choices. 3219 mLooper->wake(); 3220} 3221 3222void InputDispatcher::setFocusedApplication(const InputApplication* inputApplication) { 3223#if DEBUG_FOCUS 3224 LOGD("setFocusedApplication"); 3225#endif 3226 { // acquire lock 3227 AutoMutex _l(mLock); 3228 3229 releaseFocusedApplicationLocked(); 3230 3231 if (inputApplication) { 3232 mFocusedApplicationStorage = *inputApplication; 3233 mFocusedApplication = & mFocusedApplicationStorage; 3234 } 3235 3236#if DEBUG_FOCUS 3237 //logDispatchStateLocked(); 3238#endif 3239 } // release lock 3240 3241 // Wake up poll loop since it may need to make new input dispatching choices. 3242 mLooper->wake(); 3243} 3244 3245void InputDispatcher::releaseFocusedApplicationLocked() { 3246 if (mFocusedApplication) { 3247 mFocusedApplication = NULL; 3248 mFocusedApplicationStorage.inputApplicationHandle.clear(); 3249 } 3250} 3251 3252void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 3253#if DEBUG_FOCUS 3254 LOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 3255#endif 3256 3257 bool changed; 3258 { // acquire lock 3259 AutoMutex _l(mLock); 3260 3261 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 3262 if (mDispatchFrozen && !frozen) { 3263 resetANRTimeoutsLocked(); 3264 } 3265 3266 if (mDispatchEnabled && !enabled) { 3267 resetAndDropEverythingLocked("dispatcher is being disabled"); 3268 } 3269 3270 mDispatchEnabled = enabled; 3271 mDispatchFrozen = frozen; 3272 changed = true; 3273 } else { 3274 changed = false; 3275 } 3276 3277#if DEBUG_FOCUS 3278 //logDispatchStateLocked(); 3279#endif 3280 } // release lock 3281 3282 if (changed) { 3283 // Wake up poll loop since it may need to make new input dispatching choices. 3284 mLooper->wake(); 3285 } 3286} 3287 3288void InputDispatcher::setInputFilterEnabled(bool enabled) { 3289#if DEBUG_FOCUS 3290 LOGD("setInputFilterEnabled: enabled=%d", enabled); 3291#endif 3292 3293 { // acquire lock 3294 AutoMutex _l(mLock); 3295 3296 if (mInputFilterEnabled == enabled) { 3297 return; 3298 } 3299 3300 mInputFilterEnabled = enabled; 3301 resetAndDropEverythingLocked("input filter is being enabled or disabled"); 3302 } // release lock 3303 3304 // Wake up poll loop since there might be work to do to drop everything. 3305 mLooper->wake(); 3306} 3307 3308bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 3309 const sp<InputChannel>& toChannel) { 3310#if DEBUG_FOCUS 3311 LOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 3312 fromChannel->getName().string(), toChannel->getName().string()); 3313#endif 3314 { // acquire lock 3315 AutoMutex _l(mLock); 3316 3317 const InputWindow* fromWindow = getWindowLocked(fromChannel); 3318 const InputWindow* toWindow = getWindowLocked(toChannel); 3319 if (! fromWindow || ! toWindow) { 3320#if DEBUG_FOCUS 3321 LOGD("Cannot transfer focus because from or to window not found."); 3322#endif 3323 return false; 3324 } 3325 if (fromWindow == toWindow) { 3326#if DEBUG_FOCUS 3327 LOGD("Trivial transfer to same window."); 3328#endif 3329 return true; 3330 } 3331 3332 bool found = false; 3333 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3334 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3335 if (touchedWindow.window == fromWindow) { 3336 int32_t oldTargetFlags = touchedWindow.targetFlags; 3337 BitSet32 pointerIds = touchedWindow.pointerIds; 3338 3339 mTouchState.windows.removeAt(i); 3340 3341 int32_t newTargetFlags = oldTargetFlags 3342 & (InputTarget::FLAG_FOREGROUND 3343 | InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS); 3344 mTouchState.addOrUpdateWindow(toWindow, newTargetFlags, pointerIds); 3345 3346 found = true; 3347 break; 3348 } 3349 } 3350 3351 if (! found) { 3352#if DEBUG_FOCUS 3353 LOGD("Focus transfer failed because from window did not have focus."); 3354#endif 3355 return false; 3356 } 3357 3358 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 3359 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 3360 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 3361 sp<Connection> fromConnection = mConnectionsByReceiveFd.valueAt(fromConnectionIndex); 3362 sp<Connection> toConnection = mConnectionsByReceiveFd.valueAt(toConnectionIndex); 3363 3364 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 3365 CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, 3366 "transferring touch focus from this window to another window"); 3367 synthesizeCancelationEventsForConnectionLocked(fromConnection, options); 3368 } 3369 3370#if DEBUG_FOCUS 3371 logDispatchStateLocked(); 3372#endif 3373 } // release lock 3374 3375 // Wake up poll loop since it may need to make new input dispatching choices. 3376 mLooper->wake(); 3377 return true; 3378} 3379 3380void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 3381#if DEBUG_FOCUS 3382 LOGD("Resetting and dropping all events (%s).", reason); 3383#endif 3384 3385 CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason); 3386 synthesizeCancelationEventsForAllConnectionsLocked(options); 3387 3388 resetKeyRepeatLocked(); 3389 releasePendingEventLocked(); 3390 drainInboundQueueLocked(); 3391 resetTargetsLocked(); 3392 3393 mTouchState.reset(); 3394 mLastHoverWindow = NULL; 3395} 3396 3397void InputDispatcher::logDispatchStateLocked() { 3398 String8 dump; 3399 dumpDispatchStateLocked(dump); 3400 3401 char* text = dump.lockBuffer(dump.size()); 3402 char* start = text; 3403 while (*start != '\0') { 3404 char* end = strchr(start, '\n'); 3405 if (*end == '\n') { 3406 *(end++) = '\0'; 3407 } 3408 LOGD("%s", start); 3409 start = end; 3410 } 3411} 3412 3413void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 3414 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 3415 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 3416 3417 if (mFocusedApplication) { 3418 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 3419 mFocusedApplication->name.string(), 3420 mFocusedApplication->dispatchingTimeout / 1000000.0); 3421 } else { 3422 dump.append(INDENT "FocusedApplication: <null>\n"); 3423 } 3424 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 3425 mFocusedWindow != NULL ? mFocusedWindow->name.string() : "<null>"); 3426 3427 dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down)); 3428 dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split)); 3429 dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId); 3430 dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source); 3431 if (!mTouchState.windows.isEmpty()) { 3432 dump.append(INDENT "TouchedWindows:\n"); 3433 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 3434 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 3435 dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 3436 i, touchedWindow.window->name.string(), touchedWindow.pointerIds.value, 3437 touchedWindow.targetFlags); 3438 } 3439 } else { 3440 dump.append(INDENT "TouchedWindows: <none>\n"); 3441 } 3442 3443 if (!mWindows.isEmpty()) { 3444 dump.append(INDENT "Windows:\n"); 3445 for (size_t i = 0; i < mWindows.size(); i++) { 3446 const InputWindow& window = mWindows[i]; 3447 dump.appendFormat(INDENT2 "%d: name='%s', paused=%s, hasFocus=%s, hasWallpaper=%s, " 3448 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 3449 "frame=[%d,%d][%d,%d], scale=%f, " 3450 "touchableRegion=", 3451 i, window.name.string(), 3452 toString(window.paused), 3453 toString(window.hasFocus), 3454 toString(window.hasWallpaper), 3455 toString(window.visible), 3456 toString(window.canReceiveKeys), 3457 window.layoutParamsFlags, window.layoutParamsType, 3458 window.layer, 3459 window.frameLeft, window.frameTop, 3460 window.frameRight, window.frameBottom, 3461 window.scaleFactor); 3462 dumpRegion(dump, window.touchableRegion); 3463 dump.appendFormat(", inputFeatures=0x%08x", window.inputFeatures); 3464 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 3465 window.ownerPid, window.ownerUid, 3466 window.dispatchingTimeout / 1000000.0); 3467 } 3468 } else { 3469 dump.append(INDENT "Windows: <none>\n"); 3470 } 3471 3472 if (!mMonitoringChannels.isEmpty()) { 3473 dump.append(INDENT "MonitoringChannels:\n"); 3474 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3475 const sp<InputChannel>& channel = mMonitoringChannels[i]; 3476 dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string()); 3477 } 3478 } else { 3479 dump.append(INDENT "MonitoringChannels: <none>\n"); 3480 } 3481 3482 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 3483 3484 if (!mActiveConnections.isEmpty()) { 3485 dump.append(INDENT "ActiveConnections:\n"); 3486 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3487 const Connection* connection = mActiveConnections[i]; 3488 dump.appendFormat(INDENT2 "%d: '%s', status=%s, outboundQueueLength=%u, " 3489 "inputState.isNeutral=%s\n", 3490 i, connection->getInputChannelName(), connection->getStatusLabel(), 3491 connection->outboundQueue.count(), 3492 toString(connection->inputState.isNeutral())); 3493 } 3494 } else { 3495 dump.append(INDENT "ActiveConnections: <none>\n"); 3496 } 3497 3498 if (isAppSwitchPendingLocked()) { 3499 dump.appendFormat(INDENT "AppSwitch: pending, due in %01.1fms\n", 3500 (mAppSwitchDueTime - now()) / 1000000.0); 3501 } else { 3502 dump.append(INDENT "AppSwitch: not pending\n"); 3503 } 3504} 3505 3506status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 3507 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3508#if DEBUG_REGISTRATION 3509 LOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3510 toString(monitor)); 3511#endif 3512 3513 { // acquire lock 3514 AutoMutex _l(mLock); 3515 3516 if (getConnectionIndexLocked(inputChannel) >= 0) { 3517 LOGW("Attempted to register already registered input channel '%s'", 3518 inputChannel->getName().string()); 3519 return BAD_VALUE; 3520 } 3521 3522 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle); 3523 status_t status = connection->initialize(); 3524 if (status) { 3525 LOGE("Failed to initialize input publisher for input channel '%s', status=%d", 3526 inputChannel->getName().string(), status); 3527 return status; 3528 } 3529 3530 int32_t receiveFd = inputChannel->getReceivePipeFd(); 3531 mConnectionsByReceiveFd.add(receiveFd, connection); 3532 3533 if (monitor) { 3534 mMonitoringChannels.push(inputChannel); 3535 } 3536 3537 mLooper->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3538 3539 runCommandsLockedInterruptible(); 3540 } // release lock 3541 return OK; 3542} 3543 3544status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3545#if DEBUG_REGISTRATION 3546 LOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3547#endif 3548 3549 { // acquire lock 3550 AutoMutex _l(mLock); 3551 3552 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3553 if (connectionIndex < 0) { 3554 LOGW("Attempted to unregister already unregistered input channel '%s'", 3555 inputChannel->getName().string()); 3556 return BAD_VALUE; 3557 } 3558 3559 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3560 mConnectionsByReceiveFd.removeItemsAt(connectionIndex); 3561 3562 connection->status = Connection::STATUS_ZOMBIE; 3563 3564 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3565 if (mMonitoringChannels[i] == inputChannel) { 3566 mMonitoringChannels.removeAt(i); 3567 break; 3568 } 3569 } 3570 3571 mLooper->removeFd(inputChannel->getReceivePipeFd()); 3572 3573 nsecs_t currentTime = now(); 3574 abortBrokenDispatchCycleLocked(currentTime, connection); 3575 3576 runCommandsLockedInterruptible(); 3577 } // release lock 3578 3579 // Wake the poll loop because removing the connection may have changed the current 3580 // synchronization state. 3581 mLooper->wake(); 3582 return OK; 3583} 3584 3585ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3586 ssize_t connectionIndex = mConnectionsByReceiveFd.indexOfKey(inputChannel->getReceivePipeFd()); 3587 if (connectionIndex >= 0) { 3588 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3589 if (connection->inputChannel.get() == inputChannel.get()) { 3590 return connectionIndex; 3591 } 3592 } 3593 3594 return -1; 3595} 3596 3597void InputDispatcher::activateConnectionLocked(Connection* connection) { 3598 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3599 if (mActiveConnections.itemAt(i) == connection) { 3600 return; 3601 } 3602 } 3603 mActiveConnections.add(connection); 3604} 3605 3606void InputDispatcher::deactivateConnectionLocked(Connection* connection) { 3607 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3608 if (mActiveConnections.itemAt(i) == connection) { 3609 mActiveConnections.removeAt(i); 3610 return; 3611 } 3612 } 3613} 3614 3615void InputDispatcher::onDispatchCycleStartedLocked( 3616 nsecs_t currentTime, const sp<Connection>& connection) { 3617} 3618 3619void InputDispatcher::onDispatchCycleFinishedLocked( 3620 nsecs_t currentTime, const sp<Connection>& connection, bool handled) { 3621 CommandEntry* commandEntry = postCommandLocked( 3622 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3623 commandEntry->connection = connection; 3624 commandEntry->handled = handled; 3625} 3626 3627void InputDispatcher::onDispatchCycleBrokenLocked( 3628 nsecs_t currentTime, const sp<Connection>& connection) { 3629 LOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3630 connection->getInputChannelName()); 3631 3632 CommandEntry* commandEntry = postCommandLocked( 3633 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3634 commandEntry->connection = connection; 3635} 3636 3637void InputDispatcher::onANRLocked( 3638 nsecs_t currentTime, const InputApplication* application, const InputWindow* window, 3639 nsecs_t eventTime, nsecs_t waitStartTime) { 3640 LOGI("Application is not responding: %s. " 3641 "%01.1fms since event, %01.1fms since wait started", 3642 getApplicationWindowLabelLocked(application, window).string(), 3643 (currentTime - eventTime) / 1000000.0, 3644 (currentTime - waitStartTime) / 1000000.0); 3645 3646 CommandEntry* commandEntry = postCommandLocked( 3647 & InputDispatcher::doNotifyANRLockedInterruptible); 3648 if (application) { 3649 commandEntry->inputApplicationHandle = application->inputApplicationHandle; 3650 } 3651 if (window) { 3652 commandEntry->inputWindowHandle = window->inputWindowHandle; 3653 commandEntry->inputChannel = window->inputChannel; 3654 } 3655} 3656 3657void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3658 CommandEntry* commandEntry) { 3659 mLock.unlock(); 3660 3661 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3662 3663 mLock.lock(); 3664} 3665 3666void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3667 CommandEntry* commandEntry) { 3668 sp<Connection> connection = commandEntry->connection; 3669 3670 if (connection->status != Connection::STATUS_ZOMBIE) { 3671 mLock.unlock(); 3672 3673 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3674 3675 mLock.lock(); 3676 } 3677} 3678 3679void InputDispatcher::doNotifyANRLockedInterruptible( 3680 CommandEntry* commandEntry) { 3681 mLock.unlock(); 3682 3683 nsecs_t newTimeout = mPolicy->notifyANR( 3684 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle); 3685 3686 mLock.lock(); 3687 3688 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel); 3689} 3690 3691void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3692 CommandEntry* commandEntry) { 3693 KeyEntry* entry = commandEntry->keyEntry; 3694 3695 KeyEvent event; 3696 initializeKeyEvent(&event, entry); 3697 3698 mLock.unlock(); 3699 3700 bool consumed = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3701 &event, entry->policyFlags); 3702 3703 mLock.lock(); 3704 3705 entry->interceptKeyResult = consumed 3706 ? KeyEntry::INTERCEPT_KEY_RESULT_SKIP 3707 : KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3708 mAllocator.releaseKeyEntry(entry); 3709} 3710 3711void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3712 CommandEntry* commandEntry) { 3713 sp<Connection> connection = commandEntry->connection; 3714 bool handled = commandEntry->handled; 3715 3716 bool skipNext = false; 3717 if (!connection->outboundQueue.isEmpty()) { 3718 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 3719 if (dispatchEntry->inProgress) { 3720 if (dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3721 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3722 skipNext = afterKeyEventLockedInterruptible(connection, 3723 dispatchEntry, keyEntry, handled); 3724 } else if (dispatchEntry->eventEntry->type == EventEntry::TYPE_MOTION) { 3725 MotionEntry* motionEntry = static_cast<MotionEntry*>(dispatchEntry->eventEntry); 3726 skipNext = afterMotionEventLockedInterruptible(connection, 3727 dispatchEntry, motionEntry, handled); 3728 } 3729 } 3730 } 3731 3732 if (!skipNext) { 3733 startNextDispatchCycleLocked(now(), connection); 3734 } 3735} 3736 3737bool InputDispatcher::afterKeyEventLockedInterruptible(const sp<Connection>& connection, 3738 DispatchEntry* dispatchEntry, KeyEntry* keyEntry, bool handled) { 3739 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3740 // Get the fallback key state. 3741 // Clear it out after dispatching the UP. 3742 int32_t originalKeyCode = keyEntry->keyCode; 3743 int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode); 3744 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3745 connection->inputState.removeFallbackKey(originalKeyCode); 3746 } 3747 3748 if (handled || !dispatchEntry->hasForegroundTarget()) { 3749 // If the application handles the original key for which we previously 3750 // generated a fallback or if the window is not a foreground window, 3751 // then cancel the associated fallback key, if any. 3752 if (fallbackKeyCode != -1) { 3753 if (fallbackKeyCode != AKEYCODE_UNKNOWN) { 3754 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3755 "application handled the original non-fallback key " 3756 "or is no longer a foreground target, " 3757 "canceling previously dispatched fallback key"); 3758 options.keyCode = fallbackKeyCode; 3759 synthesizeCancelationEventsForConnectionLocked(connection, options); 3760 } 3761 connection->inputState.removeFallbackKey(originalKeyCode); 3762 } 3763 } else { 3764 // If the application did not handle a non-fallback key, first check 3765 // that we are in a good state to perform unhandled key event processing 3766 // Then ask the policy what to do with it. 3767 bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN 3768 && keyEntry->repeatCount == 0; 3769 if (fallbackKeyCode == -1 && !initialDown) { 3770#if DEBUG_OUTBOUND_EVENT_DETAILS 3771 LOGD("Unhandled key event: Skipping unhandled key event processing " 3772 "since this is not an initial down. " 3773 "keyCode=%d, action=%d, repeatCount=%d", 3774 originalKeyCode, keyEntry->action, keyEntry->repeatCount); 3775#endif 3776 return false; 3777 } 3778 3779 // Dispatch the unhandled key to the policy. 3780#if DEBUG_OUTBOUND_EVENT_DETAILS 3781 LOGD("Unhandled key event: Asking policy to perform fallback action. " 3782 "keyCode=%d, action=%d, repeatCount=%d", 3783 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3784#endif 3785 KeyEvent event; 3786 initializeKeyEvent(&event, keyEntry); 3787 3788 mLock.unlock(); 3789 3790 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3791 &event, keyEntry->policyFlags, &event); 3792 3793 mLock.lock(); 3794 3795 if (connection->status != Connection::STATUS_NORMAL) { 3796 connection->inputState.removeFallbackKey(originalKeyCode); 3797 return true; // skip next cycle 3798 } 3799 3800 LOG_ASSERT(connection->outboundQueue.headSentinel.next == dispatchEntry); 3801 3802 // Latch the fallback keycode for this key on an initial down. 3803 // The fallback keycode cannot change at any other point in the lifecycle. 3804 if (initialDown) { 3805 if (fallback) { 3806 fallbackKeyCode = event.getKeyCode(); 3807 } else { 3808 fallbackKeyCode = AKEYCODE_UNKNOWN; 3809 } 3810 connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode); 3811 } 3812 3813 LOG_ASSERT(fallbackKeyCode != -1); 3814 3815 // Cancel the fallback key if the policy decides not to send it anymore. 3816 // We will continue to dispatch the key to the policy but we will no 3817 // longer dispatch a fallback key to the application. 3818 if (fallbackKeyCode != AKEYCODE_UNKNOWN 3819 && (!fallback || fallbackKeyCode != event.getKeyCode())) { 3820#if DEBUG_OUTBOUND_EVENT_DETAILS 3821 if (fallback) { 3822 LOGD("Unhandled key event: Policy requested to send key %d" 3823 "as a fallback for %d, but on the DOWN it had requested " 3824 "to send %d instead. Fallback canceled.", 3825 event.getKeyCode(), originalKeyCode, fallbackKeyCode); 3826 } else { 3827 LOGD("Unhandled key event: Policy did not request fallback for %d," 3828 "but on the DOWN it had requested to send %d. " 3829 "Fallback canceled.", 3830 originalKeyCode, fallbackKeyCode); 3831 } 3832#endif 3833 3834 CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS, 3835 "canceling fallback, policy no longer desires it"); 3836 options.keyCode = fallbackKeyCode; 3837 synthesizeCancelationEventsForConnectionLocked(connection, options); 3838 3839 fallback = false; 3840 fallbackKeyCode = AKEYCODE_UNKNOWN; 3841 if (keyEntry->action != AKEY_EVENT_ACTION_UP) { 3842 connection->inputState.setFallbackKey(originalKeyCode, 3843 fallbackKeyCode); 3844 } 3845 } 3846 3847#if DEBUG_OUTBOUND_EVENT_DETAILS 3848 { 3849 String8 msg; 3850 const KeyedVector<int32_t, int32_t>& fallbackKeys = 3851 connection->inputState.getFallbackKeys(); 3852 for (size_t i = 0; i < fallbackKeys.size(); i++) { 3853 msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i), 3854 fallbackKeys.valueAt(i)); 3855 } 3856 LOGD("Unhandled key event: %d currently tracked fallback keys%s.", 3857 fallbackKeys.size(), msg.string()); 3858 } 3859#endif 3860 3861 if (fallback) { 3862 // Restart the dispatch cycle using the fallback key. 3863 keyEntry->eventTime = event.getEventTime(); 3864 keyEntry->deviceId = event.getDeviceId(); 3865 keyEntry->source = event.getSource(); 3866 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3867 keyEntry->keyCode = fallbackKeyCode; 3868 keyEntry->scanCode = event.getScanCode(); 3869 keyEntry->metaState = event.getMetaState(); 3870 keyEntry->repeatCount = event.getRepeatCount(); 3871 keyEntry->downTime = event.getDownTime(); 3872 keyEntry->syntheticRepeat = false; 3873 3874#if DEBUG_OUTBOUND_EVENT_DETAILS 3875 LOGD("Unhandled key event: Dispatching fallback key. " 3876 "originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x", 3877 originalKeyCode, fallbackKeyCode, keyEntry->metaState); 3878#endif 3879 3880 dispatchEntry->inProgress = false; 3881 startDispatchCycleLocked(now(), connection); 3882 return true; // already started next cycle 3883 } else { 3884#if DEBUG_OUTBOUND_EVENT_DETAILS 3885 LOGD("Unhandled key event: No fallback key."); 3886#endif 3887 } 3888 } 3889 } 3890 return false; 3891} 3892 3893bool InputDispatcher::afterMotionEventLockedInterruptible(const sp<Connection>& connection, 3894 DispatchEntry* dispatchEntry, MotionEntry* motionEntry, bool handled) { 3895 return false; 3896} 3897 3898void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3899 mLock.unlock(); 3900 3901 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3902 3903 mLock.lock(); 3904} 3905 3906void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3907 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3908 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3909 entry->downTime, entry->eventTime); 3910} 3911 3912void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3913 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3914 // TODO Write some statistics about how long we spend waiting. 3915} 3916 3917void InputDispatcher::dump(String8& dump) { 3918 dump.append("Input Dispatcher State:\n"); 3919 dumpDispatchStateLocked(dump); 3920 3921 dump.append(INDENT "Configuration:\n"); 3922 dump.appendFormat(INDENT2 "MaxEventsPerSecond: %d\n", mConfig.maxEventsPerSecond); 3923 dump.appendFormat(INDENT2 "KeyRepeatDelay: %0.1fms\n", mConfig.keyRepeatDelay * 0.000001f); 3924 dump.appendFormat(INDENT2 "KeyRepeatTimeout: %0.1fms\n", mConfig.keyRepeatTimeout * 0.000001f); 3925} 3926 3927 3928// --- InputDispatcher::Queue --- 3929 3930template <typename T> 3931uint32_t InputDispatcher::Queue<T>::count() const { 3932 uint32_t result = 0; 3933 for (const T* entry = headSentinel.next; entry != & tailSentinel; entry = entry->next) { 3934 result += 1; 3935 } 3936 return result; 3937} 3938 3939 3940// --- InputDispatcher::Allocator --- 3941 3942InputDispatcher::Allocator::Allocator() { 3943} 3944 3945InputDispatcher::InjectionState* 3946InputDispatcher::Allocator::obtainInjectionState(int32_t injectorPid, int32_t injectorUid) { 3947 InjectionState* injectionState = mInjectionStatePool.alloc(); 3948 injectionState->refCount = 1; 3949 injectionState->injectorPid = injectorPid; 3950 injectionState->injectorUid = injectorUid; 3951 injectionState->injectionIsAsync = false; 3952 injectionState->injectionResult = INPUT_EVENT_INJECTION_PENDING; 3953 injectionState->pendingForegroundDispatches = 0; 3954 return injectionState; 3955} 3956 3957void InputDispatcher::Allocator::initializeEventEntry(EventEntry* entry, int32_t type, 3958 nsecs_t eventTime, uint32_t policyFlags) { 3959 entry->type = type; 3960 entry->refCount = 1; 3961 entry->dispatchInProgress = false; 3962 entry->eventTime = eventTime; 3963 entry->policyFlags = policyFlags; 3964 entry->injectionState = NULL; 3965} 3966 3967void InputDispatcher::Allocator::releaseEventEntryInjectionState(EventEntry* entry) { 3968 if (entry->injectionState) { 3969 releaseInjectionState(entry->injectionState); 3970 entry->injectionState = NULL; 3971 } 3972} 3973 3974InputDispatcher::ConfigurationChangedEntry* 3975InputDispatcher::Allocator::obtainConfigurationChangedEntry(nsecs_t eventTime) { 3976 ConfigurationChangedEntry* entry = mConfigurationChangeEntryPool.alloc(); 3977 initializeEventEntry(entry, EventEntry::TYPE_CONFIGURATION_CHANGED, eventTime, 0); 3978 return entry; 3979} 3980 3981InputDispatcher::KeyEntry* InputDispatcher::Allocator::obtainKeyEntry(nsecs_t eventTime, 3982 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3983 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3984 int32_t repeatCount, nsecs_t downTime) { 3985 KeyEntry* entry = mKeyEntryPool.alloc(); 3986 initializeEventEntry(entry, EventEntry::TYPE_KEY, eventTime, policyFlags); 3987 3988 entry->deviceId = deviceId; 3989 entry->source = source; 3990 entry->action = action; 3991 entry->flags = flags; 3992 entry->keyCode = keyCode; 3993 entry->scanCode = scanCode; 3994 entry->metaState = metaState; 3995 entry->repeatCount = repeatCount; 3996 entry->downTime = downTime; 3997 entry->syntheticRepeat = false; 3998 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3999 return entry; 4000} 4001 4002InputDispatcher::MotionEntry* InputDispatcher::Allocator::obtainMotionEntry(nsecs_t eventTime, 4003 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 4004 int32_t metaState, int32_t buttonState, 4005 int32_t edgeFlags, float xPrecision, float yPrecision, 4006 nsecs_t downTime, uint32_t pointerCount, 4007 const PointerProperties* pointerProperties, const PointerCoords* pointerCoords) { 4008 MotionEntry* entry = mMotionEntryPool.alloc(); 4009 initializeEventEntry(entry, EventEntry::TYPE_MOTION, eventTime, policyFlags); 4010 4011 entry->eventTime = eventTime; 4012 entry->deviceId = deviceId; 4013 entry->source = source; 4014 entry->action = action; 4015 entry->flags = flags; 4016 entry->metaState = metaState; 4017 entry->buttonState = buttonState; 4018 entry->edgeFlags = edgeFlags; 4019 entry->xPrecision = xPrecision; 4020 entry->yPrecision = yPrecision; 4021 entry->downTime = downTime; 4022 entry->pointerCount = pointerCount; 4023 entry->firstSample.eventTime = eventTime; 4024 entry->firstSample.eventTimeBeforeCoalescing = eventTime; 4025 entry->firstSample.next = NULL; 4026 entry->lastSample = & entry->firstSample; 4027 for (uint32_t i = 0; i < pointerCount; i++) { 4028 entry->pointerProperties[i].copyFrom(pointerProperties[i]); 4029 entry->firstSample.pointerCoords[i].copyFrom(pointerCoords[i]); 4030 } 4031 return entry; 4032} 4033 4034InputDispatcher::DispatchEntry* InputDispatcher::Allocator::obtainDispatchEntry( 4035 EventEntry* eventEntry, 4036 int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) { 4037 DispatchEntry* entry = mDispatchEntryPool.alloc(); 4038 entry->eventEntry = eventEntry; 4039 eventEntry->refCount += 1; 4040 entry->targetFlags = targetFlags; 4041 entry->xOffset = xOffset; 4042 entry->yOffset = yOffset; 4043 entry->scaleFactor = scaleFactor; 4044 entry->inProgress = false; 4045 entry->headMotionSample = NULL; 4046 entry->tailMotionSample = NULL; 4047 return entry; 4048} 4049 4050InputDispatcher::CommandEntry* InputDispatcher::Allocator::obtainCommandEntry(Command command) { 4051 CommandEntry* entry = mCommandEntryPool.alloc(); 4052 entry->command = command; 4053 return entry; 4054} 4055 4056void InputDispatcher::Allocator::releaseInjectionState(InjectionState* injectionState) { 4057 injectionState->refCount -= 1; 4058 if (injectionState->refCount == 0) { 4059 mInjectionStatePool.free(injectionState); 4060 } else { 4061 LOG_ASSERT(injectionState->refCount > 0); 4062 } 4063} 4064 4065void InputDispatcher::Allocator::releaseEventEntry(EventEntry* entry) { 4066 switch (entry->type) { 4067 case EventEntry::TYPE_CONFIGURATION_CHANGED: 4068 releaseConfigurationChangedEntry(static_cast<ConfigurationChangedEntry*>(entry)); 4069 break; 4070 case EventEntry::TYPE_KEY: 4071 releaseKeyEntry(static_cast<KeyEntry*>(entry)); 4072 break; 4073 case EventEntry::TYPE_MOTION: 4074 releaseMotionEntry(static_cast<MotionEntry*>(entry)); 4075 break; 4076 default: 4077 LOG_ASSERT(false); 4078 break; 4079 } 4080} 4081 4082void InputDispatcher::Allocator::releaseConfigurationChangedEntry( 4083 ConfigurationChangedEntry* entry) { 4084 entry->refCount -= 1; 4085 if (entry->refCount == 0) { 4086 releaseEventEntryInjectionState(entry); 4087 mConfigurationChangeEntryPool.free(entry); 4088 } else { 4089 LOG_ASSERT(entry->refCount > 0); 4090 } 4091} 4092 4093void InputDispatcher::Allocator::releaseKeyEntry(KeyEntry* entry) { 4094 entry->refCount -= 1; 4095 if (entry->refCount == 0) { 4096 releaseEventEntryInjectionState(entry); 4097 mKeyEntryPool.free(entry); 4098 } else { 4099 LOG_ASSERT(entry->refCount > 0); 4100 } 4101} 4102 4103void InputDispatcher::Allocator::releaseMotionEntry(MotionEntry* entry) { 4104 entry->refCount -= 1; 4105 if (entry->refCount == 0) { 4106 releaseEventEntryInjectionState(entry); 4107 for (MotionSample* sample = entry->firstSample.next; sample != NULL; ) { 4108 MotionSample* next = sample->next; 4109 mMotionSamplePool.free(sample); 4110 sample = next; 4111 } 4112 mMotionEntryPool.free(entry); 4113 } else { 4114 LOG_ASSERT(entry->refCount > 0); 4115 } 4116} 4117 4118void InputDispatcher::Allocator::freeMotionSample(MotionSample* sample) { 4119 mMotionSamplePool.free(sample); 4120} 4121 4122void InputDispatcher::Allocator::releaseDispatchEntry(DispatchEntry* entry) { 4123 releaseEventEntry(entry->eventEntry); 4124 mDispatchEntryPool.free(entry); 4125} 4126 4127void InputDispatcher::Allocator::releaseCommandEntry(CommandEntry* entry) { 4128 mCommandEntryPool.free(entry); 4129} 4130 4131void InputDispatcher::Allocator::appendMotionSample(MotionEntry* motionEntry, 4132 nsecs_t eventTime, const PointerCoords* pointerCoords) { 4133 MotionSample* sample = mMotionSamplePool.alloc(); 4134 sample->eventTime = eventTime; 4135 sample->eventTimeBeforeCoalescing = eventTime; 4136 uint32_t pointerCount = motionEntry->pointerCount; 4137 for (uint32_t i = 0; i < pointerCount; i++) { 4138 sample->pointerCoords[i].copyFrom(pointerCoords[i]); 4139 } 4140 4141 sample->next = NULL; 4142 motionEntry->lastSample->next = sample; 4143 motionEntry->lastSample = sample; 4144} 4145 4146void InputDispatcher::Allocator::recycleKeyEntry(KeyEntry* keyEntry) { 4147 releaseEventEntryInjectionState(keyEntry); 4148 4149 keyEntry->dispatchInProgress = false; 4150 keyEntry->syntheticRepeat = false; 4151 keyEntry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 4152} 4153 4154 4155// --- InputDispatcher::MotionEntry --- 4156 4157uint32_t InputDispatcher::MotionEntry::countSamples() const { 4158 uint32_t count = 1; 4159 for (MotionSample* sample = firstSample.next; sample != NULL; sample = sample->next) { 4160 count += 1; 4161 } 4162 return count; 4163} 4164 4165bool InputDispatcher::MotionEntry::canAppendSamples(int32_t action, uint32_t pointerCount, 4166 const PointerProperties* pointerProperties) const { 4167 if (this->action != action 4168 || this->pointerCount != pointerCount 4169 || this->isInjected()) { 4170 return false; 4171 } 4172 for (uint32_t i = 0; i < pointerCount; i++) { 4173 if (this->pointerProperties[i] != pointerProperties[i]) { 4174 return false; 4175 } 4176 } 4177 return true; 4178} 4179 4180 4181// --- InputDispatcher::InputState --- 4182 4183InputDispatcher::InputState::InputState() { 4184} 4185 4186InputDispatcher::InputState::~InputState() { 4187} 4188 4189bool InputDispatcher::InputState::isNeutral() const { 4190 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 4191} 4192 4193bool InputDispatcher::InputState::isHovering(int32_t deviceId, uint32_t source) const { 4194 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4195 const MotionMemento& memento = mMotionMementos.itemAt(i); 4196 if (memento.deviceId == deviceId 4197 && memento.source == source 4198 && memento.hovering) { 4199 return true; 4200 } 4201 } 4202 return false; 4203} 4204 4205bool InputDispatcher::InputState::trackKey(const KeyEntry* entry, 4206 int32_t action, int32_t flags) { 4207 switch (action) { 4208 case AKEY_EVENT_ACTION_UP: { 4209 if (entry->flags & AKEY_EVENT_FLAG_FALLBACK) { 4210 for (size_t i = 0; i < mFallbackKeys.size(); ) { 4211 if (mFallbackKeys.valueAt(i) == entry->keyCode) { 4212 mFallbackKeys.removeItemsAt(i); 4213 } else { 4214 i += 1; 4215 } 4216 } 4217 } 4218 ssize_t index = findKeyMemento(entry); 4219 if (index >= 0) { 4220 mKeyMementos.removeAt(index); 4221 return true; 4222 } 4223#if DEBUG_OUTBOUND_EVENT_DETAILS 4224 LOGD("Dropping inconsistent key up event: deviceId=%d, source=%08x, " 4225 "keyCode=%d, scanCode=%d", 4226 entry->deviceId, entry->source, entry->keyCode, entry->scanCode); 4227#endif 4228 return false; 4229 } 4230 4231 case AKEY_EVENT_ACTION_DOWN: { 4232 ssize_t index = findKeyMemento(entry); 4233 if (index >= 0) { 4234 mKeyMementos.removeAt(index); 4235 } 4236 addKeyMemento(entry, flags); 4237 return true; 4238 } 4239 4240 default: 4241 return true; 4242 } 4243} 4244 4245bool InputDispatcher::InputState::trackMotion(const MotionEntry* entry, 4246 int32_t action, int32_t flags) { 4247 int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK; 4248 switch (actionMasked) { 4249 case AMOTION_EVENT_ACTION_UP: 4250 case AMOTION_EVENT_ACTION_CANCEL: { 4251 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4252 if (index >= 0) { 4253 mMotionMementos.removeAt(index); 4254 return true; 4255 } 4256#if DEBUG_OUTBOUND_EVENT_DETAILS 4257 LOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, " 4258 "actionMasked=%d", 4259 entry->deviceId, entry->source, actionMasked); 4260#endif 4261 return false; 4262 } 4263 4264 case AMOTION_EVENT_ACTION_DOWN: { 4265 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4266 if (index >= 0) { 4267 mMotionMementos.removeAt(index); 4268 } 4269 addMotionMemento(entry, flags, false /*hovering*/); 4270 return true; 4271 } 4272 4273 case AMOTION_EVENT_ACTION_POINTER_UP: 4274 case AMOTION_EVENT_ACTION_POINTER_DOWN: 4275 case AMOTION_EVENT_ACTION_MOVE: { 4276 ssize_t index = findMotionMemento(entry, false /*hovering*/); 4277 if (index >= 0) { 4278 MotionMemento& memento = mMotionMementos.editItemAt(index); 4279 memento.setPointers(entry); 4280 return true; 4281 } 4282#if DEBUG_OUTBOUND_EVENT_DETAILS 4283 LOGD("Dropping inconsistent motion pointer up/down or move event: " 4284 "deviceId=%d, source=%08x, actionMasked=%d", 4285 entry->deviceId, entry->source, actionMasked); 4286#endif 4287 return false; 4288 } 4289 4290 case AMOTION_EVENT_ACTION_HOVER_EXIT: { 4291 ssize_t index = findMotionMemento(entry, true /*hovering*/); 4292 if (index >= 0) { 4293 mMotionMementos.removeAt(index); 4294 return true; 4295 } 4296#if DEBUG_OUTBOUND_EVENT_DETAILS 4297 LOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x", 4298 entry->deviceId, entry->source); 4299#endif 4300 return false; 4301 } 4302 4303 case AMOTION_EVENT_ACTION_HOVER_ENTER: 4304 case AMOTION_EVENT_ACTION_HOVER_MOVE: { 4305 ssize_t index = findMotionMemento(entry, true /*hovering*/); 4306 if (index >= 0) { 4307 mMotionMementos.removeAt(index); 4308 } 4309 addMotionMemento(entry, flags, true /*hovering*/); 4310 return true; 4311 } 4312 4313 default: 4314 return true; 4315 } 4316} 4317 4318ssize_t InputDispatcher::InputState::findKeyMemento(const KeyEntry* entry) const { 4319 for (size_t i = 0; i < mKeyMementos.size(); i++) { 4320 const KeyMemento& memento = mKeyMementos.itemAt(i); 4321 if (memento.deviceId == entry->deviceId 4322 && memento.source == entry->source 4323 && memento.keyCode == entry->keyCode 4324 && memento.scanCode == entry->scanCode) { 4325 return i; 4326 } 4327 } 4328 return -1; 4329} 4330 4331ssize_t InputDispatcher::InputState::findMotionMemento(const MotionEntry* entry, 4332 bool hovering) const { 4333 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4334 const MotionMemento& memento = mMotionMementos.itemAt(i); 4335 if (memento.deviceId == entry->deviceId 4336 && memento.source == entry->source 4337 && memento.hovering == hovering) { 4338 return i; 4339 } 4340 } 4341 return -1; 4342} 4343 4344void InputDispatcher::InputState::addKeyMemento(const KeyEntry* entry, int32_t flags) { 4345 mKeyMementos.push(); 4346 KeyMemento& memento = mKeyMementos.editTop(); 4347 memento.deviceId = entry->deviceId; 4348 memento.source = entry->source; 4349 memento.keyCode = entry->keyCode; 4350 memento.scanCode = entry->scanCode; 4351 memento.flags = flags; 4352 memento.downTime = entry->downTime; 4353} 4354 4355void InputDispatcher::InputState::addMotionMemento(const MotionEntry* entry, 4356 int32_t flags, bool hovering) { 4357 mMotionMementos.push(); 4358 MotionMemento& memento = mMotionMementos.editTop(); 4359 memento.deviceId = entry->deviceId; 4360 memento.source = entry->source; 4361 memento.flags = flags; 4362 memento.xPrecision = entry->xPrecision; 4363 memento.yPrecision = entry->yPrecision; 4364 memento.downTime = entry->downTime; 4365 memento.setPointers(entry); 4366 memento.hovering = hovering; 4367} 4368 4369void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 4370 pointerCount = entry->pointerCount; 4371 for (uint32_t i = 0; i < entry->pointerCount; i++) { 4372 pointerProperties[i].copyFrom(entry->pointerProperties[i]); 4373 pointerCoords[i].copyFrom(entry->lastSample->pointerCoords[i]); 4374 } 4375} 4376 4377void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 4378 Allocator* allocator, Vector<EventEntry*>& outEvents, 4379 const CancelationOptions& options) { 4380 for (size_t i = 0; i < mKeyMementos.size(); i++) { 4381 const KeyMemento& memento = mKeyMementos.itemAt(i); 4382 if (shouldCancelKey(memento, options)) { 4383 outEvents.push(allocator->obtainKeyEntry(currentTime, 4384 memento.deviceId, memento.source, 0, 4385 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 4386 memento.keyCode, memento.scanCode, 0, 0, memento.downTime)); 4387 } 4388 } 4389 4390 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4391 const MotionMemento& memento = mMotionMementos.itemAt(i); 4392 if (shouldCancelMotion(memento, options)) { 4393 outEvents.push(allocator->obtainMotionEntry(currentTime, 4394 memento.deviceId, memento.source, 0, 4395 memento.hovering 4396 ? AMOTION_EVENT_ACTION_HOVER_EXIT 4397 : AMOTION_EVENT_ACTION_CANCEL, 4398 memento.flags, 0, 0, 0, 4399 memento.xPrecision, memento.yPrecision, memento.downTime, 4400 memento.pointerCount, memento.pointerProperties, memento.pointerCoords)); 4401 } 4402 } 4403} 4404 4405void InputDispatcher::InputState::clear() { 4406 mKeyMementos.clear(); 4407 mMotionMementos.clear(); 4408 mFallbackKeys.clear(); 4409} 4410 4411void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 4412 for (size_t i = 0; i < mMotionMementos.size(); i++) { 4413 const MotionMemento& memento = mMotionMementos.itemAt(i); 4414 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 4415 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 4416 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 4417 if (memento.deviceId == otherMemento.deviceId 4418 && memento.source == otherMemento.source) { 4419 other.mMotionMementos.removeAt(j); 4420 } else { 4421 j += 1; 4422 } 4423 } 4424 other.mMotionMementos.push(memento); 4425 } 4426 } 4427} 4428 4429int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) { 4430 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4431 return index >= 0 ? mFallbackKeys.valueAt(index) : -1; 4432} 4433 4434void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode, 4435 int32_t fallbackKeyCode) { 4436 ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode); 4437 if (index >= 0) { 4438 mFallbackKeys.replaceValueAt(index, fallbackKeyCode); 4439 } else { 4440 mFallbackKeys.add(originalKeyCode, fallbackKeyCode); 4441 } 4442} 4443 4444void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) { 4445 mFallbackKeys.removeItem(originalKeyCode); 4446} 4447 4448bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 4449 const CancelationOptions& options) { 4450 if (options.keyCode != -1 && memento.keyCode != options.keyCode) { 4451 return false; 4452 } 4453 4454 switch (options.mode) { 4455 case CancelationOptions::CANCEL_ALL_EVENTS: 4456 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4457 return true; 4458 case CancelationOptions::CANCEL_FALLBACK_EVENTS: 4459 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 4460 default: 4461 return false; 4462 } 4463} 4464 4465bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 4466 const CancelationOptions& options) { 4467 switch (options.mode) { 4468 case CancelationOptions::CANCEL_ALL_EVENTS: 4469 return true; 4470 case CancelationOptions::CANCEL_POINTER_EVENTS: 4471 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 4472 case CancelationOptions::CANCEL_NON_POINTER_EVENTS: 4473 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 4474 default: 4475 return false; 4476 } 4477} 4478 4479 4480// --- InputDispatcher::Connection --- 4481 4482InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 4483 const sp<InputWindowHandle>& inputWindowHandle) : 4484 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 4485 inputPublisher(inputChannel), 4486 lastEventTime(LONG_LONG_MAX), lastDispatchTime(LONG_LONG_MAX) { 4487} 4488 4489InputDispatcher::Connection::~Connection() { 4490} 4491 4492status_t InputDispatcher::Connection::initialize() { 4493 return inputPublisher.initialize(); 4494} 4495 4496const char* InputDispatcher::Connection::getStatusLabel() const { 4497 switch (status) { 4498 case STATUS_NORMAL: 4499 return "NORMAL"; 4500 4501 case STATUS_BROKEN: 4502 return "BROKEN"; 4503 4504 case STATUS_ZOMBIE: 4505 return "ZOMBIE"; 4506 4507 default: 4508 return "UNKNOWN"; 4509 } 4510} 4511 4512InputDispatcher::DispatchEntry* InputDispatcher::Connection::findQueuedDispatchEntryForEvent( 4513 const EventEntry* eventEntry) const { 4514 for (DispatchEntry* dispatchEntry = outboundQueue.tailSentinel.prev; 4515 dispatchEntry != & outboundQueue.headSentinel; dispatchEntry = dispatchEntry->prev) { 4516 if (dispatchEntry->eventEntry == eventEntry) { 4517 return dispatchEntry; 4518 } 4519 } 4520 return NULL; 4521} 4522 4523 4524// --- InputDispatcher::CommandEntry --- 4525 4526InputDispatcher::CommandEntry::CommandEntry() : 4527 keyEntry(NULL) { 4528} 4529 4530InputDispatcher::CommandEntry::~CommandEntry() { 4531} 4532 4533 4534// --- InputDispatcher::TouchState --- 4535 4536InputDispatcher::TouchState::TouchState() : 4537 down(false), split(false), deviceId(-1), source(0) { 4538} 4539 4540InputDispatcher::TouchState::~TouchState() { 4541} 4542 4543void InputDispatcher::TouchState::reset() { 4544 down = false; 4545 split = false; 4546 deviceId = -1; 4547 source = 0; 4548 windows.clear(); 4549} 4550 4551void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 4552 down = other.down; 4553 split = other.split; 4554 deviceId = other.deviceId; 4555 source = other.source; 4556 windows.clear(); 4557 windows.appendVector(other.windows); 4558} 4559 4560void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window, 4561 int32_t targetFlags, BitSet32 pointerIds) { 4562 if (targetFlags & InputTarget::FLAG_SPLIT) { 4563 split = true; 4564 } 4565 4566 for (size_t i = 0; i < windows.size(); i++) { 4567 TouchedWindow& touchedWindow = windows.editItemAt(i); 4568 if (touchedWindow.window == window) { 4569 touchedWindow.targetFlags |= targetFlags; 4570 if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) { 4571 touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS; 4572 } 4573 touchedWindow.pointerIds.value |= pointerIds.value; 4574 return; 4575 } 4576 } 4577 4578 windows.push(); 4579 4580 TouchedWindow& touchedWindow = windows.editTop(); 4581 touchedWindow.window = window; 4582 touchedWindow.targetFlags = targetFlags; 4583 touchedWindow.pointerIds = pointerIds; 4584 touchedWindow.channel = window->inputChannel; 4585} 4586 4587void InputDispatcher::TouchState::filterNonAsIsTouchWindows() { 4588 for (size_t i = 0 ; i < windows.size(); ) { 4589 TouchedWindow& window = windows.editItemAt(i); 4590 if (window.targetFlags & (InputTarget::FLAG_DISPATCH_AS_IS 4591 | InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER)) { 4592 window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK; 4593 window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS; 4594 i += 1; 4595 } else { 4596 windows.removeAt(i); 4597 } 4598 } 4599} 4600 4601const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() const { 4602 for (size_t i = 0; i < windows.size(); i++) { 4603 const TouchedWindow& window = windows.itemAt(i); 4604 if (window.targetFlags & InputTarget::FLAG_FOREGROUND) { 4605 return window.window; 4606 } 4607 } 4608 return NULL; 4609} 4610 4611bool InputDispatcher::TouchState::isSlippery() const { 4612 // Must have exactly one foreground window. 4613 bool haveSlipperyForegroundWindow = false; 4614 for (size_t i = 0; i < windows.size(); i++) { 4615 const TouchedWindow& window = windows.itemAt(i); 4616 if (window.targetFlags & InputTarget::FLAG_FOREGROUND) { 4617 if (haveSlipperyForegroundWindow 4618 || !(window.window->layoutParamsFlags & InputWindow::FLAG_SLIPPERY)) { 4619 return false; 4620 } 4621 haveSlipperyForegroundWindow = true; 4622 } 4623 } 4624 return haveSlipperyForegroundWindow; 4625} 4626 4627 4628// --- InputDispatcherThread --- 4629 4630InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 4631 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 4632} 4633 4634InputDispatcherThread::~InputDispatcherThread() { 4635} 4636 4637bool InputDispatcherThread::threadLoop() { 4638 mDispatcher->dispatchOnce(); 4639 return true; 4640} 4641 4642} // namespace android 4643