InputDispatcher.cpp revision e2515eebf42c763c0a2d9f873a153711778cfc17
1/* 2 * Copyright (C) 2010 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17#define LOG_TAG "InputDispatcher" 18 19//#define LOG_NDEBUG 0 20 21// Log detailed debug messages about each inbound event notification to the dispatcher. 22#define DEBUG_INBOUND_EVENT_DETAILS 0 23 24// Log detailed debug messages about each outbound event processed by the dispatcher. 25#define DEBUG_OUTBOUND_EVENT_DETAILS 0 26 27// Log debug messages about batching. 28#define DEBUG_BATCHING 0 29 30// Log debug messages about the dispatch cycle. 31#define DEBUG_DISPATCH_CYCLE 0 32 33// Log debug messages about registrations. 34#define DEBUG_REGISTRATION 0 35 36// Log debug messages about performance statistics. 37#define DEBUG_PERFORMANCE_STATISTICS 0 38 39// Log debug messages about input event injection. 40#define DEBUG_INJECTION 0 41 42// Log debug messages about input event throttling. 43#define DEBUG_THROTTLING 0 44 45// Log debug messages about input focus tracking. 46#define DEBUG_FOCUS 0 47 48// Log debug messages about the app switch latency optimization. 49#define DEBUG_APP_SWITCH 0 50 51#include "InputDispatcher.h" 52 53#include <cutils/log.h> 54#include <ui/PowerManager.h> 55 56#include <stddef.h> 57#include <unistd.h> 58#include <errno.h> 59#include <limits.h> 60 61#define INDENT " " 62#define INDENT2 " " 63 64namespace android { 65 66// Default input dispatching timeout if there is no focused application or paused window 67// from which to determine an appropriate dispatching timeout. 68const nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec 69 70// Amount of time to allow for all pending events to be processed when an app switch 71// key is on the way. This is used to preempt input dispatch and drop input events 72// when an application takes too long to respond and the user has pressed an app switch key. 73const nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec 74 75// Amount of time to allow for an event to be dispatched (measured since its eventTime) 76// before considering it stale and dropping it. 77const nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec 78 79 80static inline nsecs_t now() { 81 return systemTime(SYSTEM_TIME_MONOTONIC); 82} 83 84static inline const char* toString(bool value) { 85 return value ? "true" : "false"; 86} 87 88static inline int32_t getMotionEventActionPointerIndex(int32_t action) { 89 return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK) 90 >> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT; 91} 92 93static bool isValidKeyAction(int32_t action) { 94 switch (action) { 95 case AKEY_EVENT_ACTION_DOWN: 96 case AKEY_EVENT_ACTION_UP: 97 return true; 98 default: 99 return false; 100 } 101} 102 103static bool validateKeyEvent(int32_t action) { 104 if (! isValidKeyAction(action)) { 105 LOGE("Key event has invalid action code 0x%x", action); 106 return false; 107 } 108 return true; 109} 110 111static bool isValidMotionAction(int32_t action, size_t pointerCount) { 112 switch (action & AMOTION_EVENT_ACTION_MASK) { 113 case AMOTION_EVENT_ACTION_DOWN: 114 case AMOTION_EVENT_ACTION_UP: 115 case AMOTION_EVENT_ACTION_CANCEL: 116 case AMOTION_EVENT_ACTION_MOVE: 117 case AMOTION_EVENT_ACTION_OUTSIDE: 118 case AMOTION_EVENT_ACTION_HOVER_MOVE: 119 case AMOTION_EVENT_ACTION_SCROLL: 120 return true; 121 case AMOTION_EVENT_ACTION_POINTER_DOWN: 122 case AMOTION_EVENT_ACTION_POINTER_UP: { 123 int32_t index = getMotionEventActionPointerIndex(action); 124 return index >= 0 && size_t(index) < pointerCount; 125 } 126 default: 127 return false; 128 } 129} 130 131static bool validateMotionEvent(int32_t action, size_t pointerCount, 132 const int32_t* pointerIds) { 133 if (! isValidMotionAction(action, pointerCount)) { 134 LOGE("Motion event has invalid action code 0x%x", action); 135 return false; 136 } 137 if (pointerCount < 1 || pointerCount > MAX_POINTERS) { 138 LOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.", 139 pointerCount, MAX_POINTERS); 140 return false; 141 } 142 BitSet32 pointerIdBits; 143 for (size_t i = 0; i < pointerCount; i++) { 144 int32_t id = pointerIds[i]; 145 if (id < 0 || id > MAX_POINTER_ID) { 146 LOGE("Motion event has invalid pointer id %d; value must be between 0 and %d", 147 id, MAX_POINTER_ID); 148 return false; 149 } 150 if (pointerIdBits.hasBit(id)) { 151 LOGE("Motion event has duplicate pointer id %d", id); 152 return false; 153 } 154 pointerIdBits.markBit(id); 155 } 156 return true; 157} 158 159static void scalePointerCoords(const PointerCoords* inCoords, size_t count, float scaleFactor, 160 PointerCoords* outCoords) { 161 for (size_t i = 0; i < count; i++) { 162 outCoords[i] = inCoords[i]; 163 outCoords[i].scale(scaleFactor); 164 } 165} 166 167static void dumpRegion(String8& dump, const SkRegion& region) { 168 if (region.isEmpty()) { 169 dump.append("<empty>"); 170 return; 171 } 172 173 bool first = true; 174 for (SkRegion::Iterator it(region); !it.done(); it.next()) { 175 if (first) { 176 first = false; 177 } else { 178 dump.append("|"); 179 } 180 const SkIRect& rect = it.rect(); 181 dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom); 182 } 183} 184 185 186// --- InputDispatcher --- 187 188InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) : 189 mPolicy(policy), 190 mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX), 191 mNextUnblockedEvent(NULL), 192 mDispatchEnabled(true), mDispatchFrozen(false), 193 mFocusedWindow(NULL), 194 mFocusedApplication(NULL), 195 mCurrentInputTargetsValid(false), 196 mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) { 197 mLooper = new Looper(false); 198 199 mInboundQueue.headSentinel.refCount = -1; 200 mInboundQueue.headSentinel.type = EventEntry::TYPE_SENTINEL; 201 mInboundQueue.headSentinel.eventTime = LONG_LONG_MIN; 202 203 mInboundQueue.tailSentinel.refCount = -1; 204 mInboundQueue.tailSentinel.type = EventEntry::TYPE_SENTINEL; 205 mInboundQueue.tailSentinel.eventTime = LONG_LONG_MAX; 206 207 mKeyRepeatState.lastKeyEntry = NULL; 208 209 int32_t maxEventsPerSecond = policy->getMaxEventsPerSecond(); 210 mThrottleState.minTimeBetweenEvents = 1000000000LL / maxEventsPerSecond; 211 mThrottleState.lastDeviceId = -1; 212 213#if DEBUG_THROTTLING 214 mThrottleState.originalSampleCount = 0; 215 LOGD("Throttling - Max events per second = %d", maxEventsPerSecond); 216#endif 217} 218 219InputDispatcher::~InputDispatcher() { 220 { // acquire lock 221 AutoMutex _l(mLock); 222 223 resetKeyRepeatLocked(); 224 releasePendingEventLocked(); 225 drainInboundQueueLocked(); 226 } 227 228 while (mConnectionsByReceiveFd.size() != 0) { 229 unregisterInputChannel(mConnectionsByReceiveFd.valueAt(0)->inputChannel); 230 } 231} 232 233void InputDispatcher::dispatchOnce() { 234 nsecs_t keyRepeatTimeout = mPolicy->getKeyRepeatTimeout(); 235 nsecs_t keyRepeatDelay = mPolicy->getKeyRepeatDelay(); 236 237 nsecs_t nextWakeupTime = LONG_LONG_MAX; 238 { // acquire lock 239 AutoMutex _l(mLock); 240 dispatchOnceInnerLocked(keyRepeatTimeout, keyRepeatDelay, & nextWakeupTime); 241 242 if (runCommandsLockedInterruptible()) { 243 nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 244 } 245 } // release lock 246 247 // Wait for callback or timeout or wake. (make sure we round up, not down) 248 nsecs_t currentTime = now(); 249 int32_t timeoutMillis; 250 if (nextWakeupTime > currentTime) { 251 uint64_t timeout = uint64_t(nextWakeupTime - currentTime); 252 timeout = (timeout + 999999LL) / 1000000LL; 253 timeoutMillis = timeout > INT_MAX ? -1 : int32_t(timeout); 254 } else { 255 timeoutMillis = 0; 256 } 257 258 mLooper->pollOnce(timeoutMillis); 259} 260 261void InputDispatcher::dispatchOnceInnerLocked(nsecs_t keyRepeatTimeout, 262 nsecs_t keyRepeatDelay, nsecs_t* nextWakeupTime) { 263 nsecs_t currentTime = now(); 264 265 // Reset the key repeat timer whenever we disallow key events, even if the next event 266 // is not a key. This is to ensure that we abort a key repeat if the device is just coming 267 // out of sleep. 268 if (keyRepeatTimeout < 0) { 269 resetKeyRepeatLocked(); 270 } 271 272 // If dispatching is frozen, do not process timeouts or try to deliver any new events. 273 if (mDispatchFrozen) { 274#if DEBUG_FOCUS 275 LOGD("Dispatch frozen. Waiting some more."); 276#endif 277 return; 278 } 279 280 // Optimize latency of app switches. 281 // Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has 282 // been pressed. When it expires, we preempt dispatch and drop all other pending events. 283 bool isAppSwitchDue = mAppSwitchDueTime <= currentTime; 284 if (mAppSwitchDueTime < *nextWakeupTime) { 285 *nextWakeupTime = mAppSwitchDueTime; 286 } 287 288 // Ready to start a new event. 289 // If we don't already have a pending event, go grab one. 290 if (! mPendingEvent) { 291 if (mInboundQueue.isEmpty()) { 292 if (isAppSwitchDue) { 293 // The inbound queue is empty so the app switch key we were waiting 294 // for will never arrive. Stop waiting for it. 295 resetPendingAppSwitchLocked(false); 296 isAppSwitchDue = false; 297 } 298 299 // Synthesize a key repeat if appropriate. 300 if (mKeyRepeatState.lastKeyEntry) { 301 if (currentTime >= mKeyRepeatState.nextRepeatTime) { 302 mPendingEvent = synthesizeKeyRepeatLocked(currentTime, keyRepeatDelay); 303 } else { 304 if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) { 305 *nextWakeupTime = mKeyRepeatState.nextRepeatTime; 306 } 307 } 308 } 309 if (! mPendingEvent) { 310 return; 311 } 312 } else { 313 // Inbound queue has at least one entry. 314 EventEntry* entry = mInboundQueue.headSentinel.next; 315 316 // Throttle the entry if it is a move event and there are no 317 // other events behind it in the queue. Due to movement batching, additional 318 // samples may be appended to this event by the time the throttling timeout 319 // expires. 320 // TODO Make this smarter and consider throttling per device independently. 321 if (entry->type == EventEntry::TYPE_MOTION 322 && !isAppSwitchDue 323 && mDispatchEnabled 324 && (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) 325 && !entry->isInjected()) { 326 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 327 int32_t deviceId = motionEntry->deviceId; 328 uint32_t source = motionEntry->source; 329 if (! isAppSwitchDue 330 && motionEntry->next == & mInboundQueue.tailSentinel // exactly one event 331 && (motionEntry->action == AMOTION_EVENT_ACTION_MOVE 332 || motionEntry->action == AMOTION_EVENT_ACTION_HOVER_MOVE) 333 && deviceId == mThrottleState.lastDeviceId 334 && source == mThrottleState.lastSource) { 335 nsecs_t nextTime = mThrottleState.lastEventTime 336 + mThrottleState.minTimeBetweenEvents; 337 if (currentTime < nextTime) { 338 // Throttle it! 339#if DEBUG_THROTTLING 340 LOGD("Throttling - Delaying motion event for " 341 "device %d, source 0x%08x by up to %0.3fms.", 342 deviceId, source, (nextTime - currentTime) * 0.000001); 343#endif 344 if (nextTime < *nextWakeupTime) { 345 *nextWakeupTime = nextTime; 346 } 347 if (mThrottleState.originalSampleCount == 0) { 348 mThrottleState.originalSampleCount = 349 motionEntry->countSamples(); 350 } 351 return; 352 } 353 } 354 355#if DEBUG_THROTTLING 356 if (mThrottleState.originalSampleCount != 0) { 357 uint32_t count = motionEntry->countSamples(); 358 LOGD("Throttling - Motion event sample count grew by %d from %d to %d.", 359 count - mThrottleState.originalSampleCount, 360 mThrottleState.originalSampleCount, count); 361 mThrottleState.originalSampleCount = 0; 362 } 363#endif 364 365 mThrottleState.lastEventTime = currentTime; 366 mThrottleState.lastDeviceId = deviceId; 367 mThrottleState.lastSource = source; 368 } 369 370 mInboundQueue.dequeue(entry); 371 mPendingEvent = entry; 372 } 373 374 // Poke user activity for this event. 375 if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) { 376 pokeUserActivityLocked(mPendingEvent); 377 } 378 } 379 380 // Now we have an event to dispatch. 381 // All events are eventually dequeued and processed this way, even if we intend to drop them. 382 assert(mPendingEvent != NULL); 383 bool done = false; 384 DropReason dropReason = DROP_REASON_NOT_DROPPED; 385 if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) { 386 dropReason = DROP_REASON_POLICY; 387 } else if (!mDispatchEnabled) { 388 dropReason = DROP_REASON_DISABLED; 389 } 390 391 if (mNextUnblockedEvent == mPendingEvent) { 392 mNextUnblockedEvent = NULL; 393 } 394 395 switch (mPendingEvent->type) { 396 case EventEntry::TYPE_CONFIGURATION_CHANGED: { 397 ConfigurationChangedEntry* typedEntry = 398 static_cast<ConfigurationChangedEntry*>(mPendingEvent); 399 done = dispatchConfigurationChangedLocked(currentTime, typedEntry); 400 dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped 401 break; 402 } 403 404 case EventEntry::TYPE_KEY: { 405 KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent); 406 if (isAppSwitchDue) { 407 if (isAppSwitchKeyEventLocked(typedEntry)) { 408 resetPendingAppSwitchLocked(true); 409 isAppSwitchDue = false; 410 } else if (dropReason == DROP_REASON_NOT_DROPPED) { 411 dropReason = DROP_REASON_APP_SWITCH; 412 } 413 } 414 if (dropReason == DROP_REASON_NOT_DROPPED 415 && isStaleEventLocked(currentTime, typedEntry)) { 416 dropReason = DROP_REASON_STALE; 417 } 418 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 419 dropReason = DROP_REASON_BLOCKED; 420 } 421 done = dispatchKeyLocked(currentTime, typedEntry, keyRepeatTimeout, 422 &dropReason, nextWakeupTime); 423 break; 424 } 425 426 case EventEntry::TYPE_MOTION: { 427 MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent); 428 if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) { 429 dropReason = DROP_REASON_APP_SWITCH; 430 } 431 if (dropReason == DROP_REASON_NOT_DROPPED 432 && isStaleEventLocked(currentTime, typedEntry)) { 433 dropReason = DROP_REASON_STALE; 434 } 435 if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) { 436 dropReason = DROP_REASON_BLOCKED; 437 } 438 done = dispatchMotionLocked(currentTime, typedEntry, 439 &dropReason, nextWakeupTime); 440 break; 441 } 442 443 default: 444 assert(false); 445 break; 446 } 447 448 if (done) { 449 if (dropReason != DROP_REASON_NOT_DROPPED) { 450 dropInboundEventLocked(mPendingEvent, dropReason); 451 } 452 453 releasePendingEventLocked(); 454 *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately 455 } 456} 457 458bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) { 459 bool needWake = mInboundQueue.isEmpty(); 460 mInboundQueue.enqueueAtTail(entry); 461 462 switch (entry->type) { 463 case EventEntry::TYPE_KEY: { 464 // Optimize app switch latency. 465 // If the application takes too long to catch up then we drop all events preceding 466 // the app switch key. 467 KeyEntry* keyEntry = static_cast<KeyEntry*>(entry); 468 if (isAppSwitchKeyEventLocked(keyEntry)) { 469 if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) { 470 mAppSwitchSawKeyDown = true; 471 } else if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 472 if (mAppSwitchSawKeyDown) { 473#if DEBUG_APP_SWITCH 474 LOGD("App switch is pending!"); 475#endif 476 mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT; 477 mAppSwitchSawKeyDown = false; 478 needWake = true; 479 } 480 } 481 } 482 break; 483 } 484 485 case EventEntry::TYPE_MOTION: { 486 // Optimize case where the current application is unresponsive and the user 487 // decides to touch a window in a different application. 488 // If the application takes too long to catch up then we drop all events preceding 489 // the touch into the other window. 490 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 491 if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN 492 && (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) 493 && mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY 494 && mInputTargetWaitApplication != NULL) { 495 int32_t x = int32_t(motionEntry->firstSample.pointerCoords[0]. 496 getAxisValue(AMOTION_EVENT_AXIS_X)); 497 int32_t y = int32_t(motionEntry->firstSample.pointerCoords[0]. 498 getAxisValue(AMOTION_EVENT_AXIS_Y)); 499 const InputWindow* touchedWindow = findTouchedWindowAtLocked(x, y); 500 if (touchedWindow 501 && touchedWindow->inputWindowHandle != NULL 502 && touchedWindow->inputWindowHandle->getInputApplicationHandle() 503 != mInputTargetWaitApplication) { 504 // User touched a different application than the one we are waiting on. 505 // Flag the event, and start pruning the input queue. 506 mNextUnblockedEvent = motionEntry; 507 needWake = true; 508 } 509 } 510 break; 511 } 512 } 513 514 return needWake; 515} 516 517const InputWindow* InputDispatcher::findTouchedWindowAtLocked(int32_t x, int32_t y) { 518 // Traverse windows from front to back to find touched window. 519 size_t numWindows = mWindows.size(); 520 for (size_t i = 0; i < numWindows; i++) { 521 const InputWindow* window = & mWindows.editItemAt(i); 522 int32_t flags = window->layoutParamsFlags; 523 524 if (window->visible) { 525 if (!(flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 526 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 527 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 528 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 529 // Found window. 530 return window; 531 } 532 } 533 } 534 535 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 536 // Error window is on top but not visible, so touch is dropped. 537 return NULL; 538 } 539 } 540 return NULL; 541} 542 543void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) { 544 const char* reason; 545 switch (dropReason) { 546 case DROP_REASON_POLICY: 547#if DEBUG_INBOUND_EVENT_DETAILS 548 LOGD("Dropped event because policy consumed it."); 549#endif 550 reason = "inbound event was dropped because the policy consumed it"; 551 break; 552 case DROP_REASON_DISABLED: 553 LOGI("Dropped event because input dispatch is disabled."); 554 reason = "inbound event was dropped because input dispatch is disabled"; 555 break; 556 case DROP_REASON_APP_SWITCH: 557 LOGI("Dropped event because of pending overdue app switch."); 558 reason = "inbound event was dropped because of pending overdue app switch"; 559 break; 560 case DROP_REASON_BLOCKED: 561 LOGI("Dropped event because the current application is not responding and the user " 562 "has started interating with a different application."); 563 reason = "inbound event was dropped because the current application is not responding " 564 "and the user has started interating with a different application"; 565 break; 566 case DROP_REASON_STALE: 567 LOGI("Dropped event because it is stale."); 568 reason = "inbound event was dropped because it is stale"; 569 break; 570 default: 571 assert(false); 572 return; 573 } 574 575 switch (entry->type) { 576 case EventEntry::TYPE_KEY: 577 synthesizeCancelationEventsForAllConnectionsLocked( 578 InputState::CANCEL_NON_POINTER_EVENTS, reason); 579 break; 580 case EventEntry::TYPE_MOTION: { 581 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 582 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 583 synthesizeCancelationEventsForAllConnectionsLocked( 584 InputState::CANCEL_POINTER_EVENTS, reason); 585 } else { 586 synthesizeCancelationEventsForAllConnectionsLocked( 587 InputState::CANCEL_NON_POINTER_EVENTS, reason); 588 } 589 break; 590 } 591 } 592} 593 594bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) { 595 return keyCode == AKEYCODE_HOME || keyCode == AKEYCODE_ENDCALL; 596} 597 598bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) { 599 return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) 600 && isAppSwitchKeyCode(keyEntry->keyCode) 601 && (keyEntry->policyFlags & POLICY_FLAG_TRUSTED) 602 && (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER); 603} 604 605bool InputDispatcher::isAppSwitchPendingLocked() { 606 return mAppSwitchDueTime != LONG_LONG_MAX; 607} 608 609void InputDispatcher::resetPendingAppSwitchLocked(bool handled) { 610 mAppSwitchDueTime = LONG_LONG_MAX; 611 612#if DEBUG_APP_SWITCH 613 if (handled) { 614 LOGD("App switch has arrived."); 615 } else { 616 LOGD("App switch was abandoned."); 617 } 618#endif 619} 620 621bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) { 622 return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT; 623} 624 625bool InputDispatcher::runCommandsLockedInterruptible() { 626 if (mCommandQueue.isEmpty()) { 627 return false; 628 } 629 630 do { 631 CommandEntry* commandEntry = mCommandQueue.dequeueAtHead(); 632 633 Command command = commandEntry->command; 634 (this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible' 635 636 commandEntry->connection.clear(); 637 mAllocator.releaseCommandEntry(commandEntry); 638 } while (! mCommandQueue.isEmpty()); 639 return true; 640} 641 642InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) { 643 CommandEntry* commandEntry = mAllocator.obtainCommandEntry(command); 644 mCommandQueue.enqueueAtTail(commandEntry); 645 return commandEntry; 646} 647 648void InputDispatcher::drainInboundQueueLocked() { 649 while (! mInboundQueue.isEmpty()) { 650 EventEntry* entry = mInboundQueue.dequeueAtHead(); 651 releaseInboundEventLocked(entry); 652 } 653} 654 655void InputDispatcher::releasePendingEventLocked() { 656 if (mPendingEvent) { 657 releaseInboundEventLocked(mPendingEvent); 658 mPendingEvent = NULL; 659 } 660} 661 662void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) { 663 InjectionState* injectionState = entry->injectionState; 664 if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) { 665#if DEBUG_DISPATCH_CYCLE 666 LOGD("Injected inbound event was dropped."); 667#endif 668 setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED); 669 } 670 mAllocator.releaseEventEntry(entry); 671} 672 673void InputDispatcher::resetKeyRepeatLocked() { 674 if (mKeyRepeatState.lastKeyEntry) { 675 mAllocator.releaseKeyEntry(mKeyRepeatState.lastKeyEntry); 676 mKeyRepeatState.lastKeyEntry = NULL; 677 } 678} 679 680InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked( 681 nsecs_t currentTime, nsecs_t keyRepeatDelay) { 682 KeyEntry* entry = mKeyRepeatState.lastKeyEntry; 683 684 // Reuse the repeated key entry if it is otherwise unreferenced. 685 uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK) 686 | POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED; 687 if (entry->refCount == 1) { 688 mAllocator.recycleKeyEntry(entry); 689 entry->eventTime = currentTime; 690 entry->policyFlags = policyFlags; 691 entry->repeatCount += 1; 692 } else { 693 KeyEntry* newEntry = mAllocator.obtainKeyEntry(currentTime, 694 entry->deviceId, entry->source, policyFlags, 695 entry->action, entry->flags, entry->keyCode, entry->scanCode, 696 entry->metaState, entry->repeatCount + 1, entry->downTime); 697 698 mKeyRepeatState.lastKeyEntry = newEntry; 699 mAllocator.releaseKeyEntry(entry); 700 701 entry = newEntry; 702 } 703 entry->syntheticRepeat = true; 704 705 // Increment reference count since we keep a reference to the event in 706 // mKeyRepeatState.lastKeyEntry in addition to the one we return. 707 entry->refCount += 1; 708 709 mKeyRepeatState.nextRepeatTime = currentTime + keyRepeatDelay; 710 return entry; 711} 712 713bool InputDispatcher::dispatchConfigurationChangedLocked( 714 nsecs_t currentTime, ConfigurationChangedEntry* entry) { 715#if DEBUG_OUTBOUND_EVENT_DETAILS 716 LOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime); 717#endif 718 719 // Reset key repeating in case a keyboard device was added or removed or something. 720 resetKeyRepeatLocked(); 721 722 // Enqueue a command to run outside the lock to tell the policy that the configuration changed. 723 CommandEntry* commandEntry = postCommandLocked( 724 & InputDispatcher::doNotifyConfigurationChangedInterruptible); 725 commandEntry->eventTime = entry->eventTime; 726 return true; 727} 728 729bool InputDispatcher::dispatchKeyLocked( 730 nsecs_t currentTime, KeyEntry* entry, nsecs_t keyRepeatTimeout, 731 DropReason* dropReason, nsecs_t* nextWakeupTime) { 732 // Preprocessing. 733 if (! entry->dispatchInProgress) { 734 if (entry->repeatCount == 0 735 && entry->action == AKEY_EVENT_ACTION_DOWN 736 && (entry->policyFlags & POLICY_FLAG_TRUSTED) 737 && !entry->isInjected()) { 738 if (mKeyRepeatState.lastKeyEntry 739 && mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) { 740 // We have seen two identical key downs in a row which indicates that the device 741 // driver is automatically generating key repeats itself. We take note of the 742 // repeat here, but we disable our own next key repeat timer since it is clear that 743 // we will not need to synthesize key repeats ourselves. 744 entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1; 745 resetKeyRepeatLocked(); 746 mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves 747 } else { 748 // Not a repeat. Save key down state in case we do see a repeat later. 749 resetKeyRepeatLocked(); 750 mKeyRepeatState.nextRepeatTime = entry->eventTime + keyRepeatTimeout; 751 } 752 mKeyRepeatState.lastKeyEntry = entry; 753 entry->refCount += 1; 754 } else if (! entry->syntheticRepeat) { 755 resetKeyRepeatLocked(); 756 } 757 758 if (entry->repeatCount == 1) { 759 entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS; 760 } else { 761 entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS; 762 } 763 764 entry->dispatchInProgress = true; 765 resetTargetsLocked(); 766 767 logOutboundKeyDetailsLocked("dispatchKey - ", entry); 768 } 769 770 // Give the policy a chance to intercept the key. 771 if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) { 772 if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) { 773 CommandEntry* commandEntry = postCommandLocked( 774 & InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible); 775 if (mFocusedWindow) { 776 commandEntry->inputWindowHandle = mFocusedWindow->inputWindowHandle; 777 } 778 commandEntry->keyEntry = entry; 779 entry->refCount += 1; 780 return false; // wait for the command to run 781 } else { 782 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 783 } 784 } else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) { 785 if (*dropReason == DROP_REASON_NOT_DROPPED) { 786 *dropReason = DROP_REASON_POLICY; 787 } 788 } 789 790 // Clean up if dropping the event. 791 if (*dropReason != DROP_REASON_NOT_DROPPED) { 792 resetTargetsLocked(); 793 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 794 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 795 return true; 796 } 797 798 // Identify targets. 799 if (! mCurrentInputTargetsValid) { 800 int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime, 801 entry, nextWakeupTime); 802 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 803 return false; 804 } 805 806 setInjectionResultLocked(entry, injectionResult); 807 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 808 return true; 809 } 810 811 addMonitoringTargetsLocked(); 812 commitTargetsLocked(); 813 } 814 815 // Dispatch the key. 816 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 817 return true; 818} 819 820void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) { 821#if DEBUG_OUTBOUND_EVENT_DETAILS 822 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 823 "action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, " 824 "repeatCount=%d, downTime=%lld", 825 prefix, 826 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 827 entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState, 828 entry->repeatCount, entry->downTime); 829#endif 830} 831 832bool InputDispatcher::dispatchMotionLocked( 833 nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) { 834 // Preprocessing. 835 if (! entry->dispatchInProgress) { 836 entry->dispatchInProgress = true; 837 resetTargetsLocked(); 838 839 logOutboundMotionDetailsLocked("dispatchMotion - ", entry); 840 } 841 842 // Clean up if dropping the event. 843 if (*dropReason != DROP_REASON_NOT_DROPPED) { 844 resetTargetsLocked(); 845 setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY 846 ? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED); 847 return true; 848 } 849 850 bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER; 851 852 // Identify targets. 853 bool conflictingPointerActions = false; 854 if (! mCurrentInputTargetsValid) { 855 int32_t injectionResult; 856 if (isPointerEvent) { 857 // Pointer event. (eg. touchscreen) 858 injectionResult = findTouchedWindowTargetsLocked(currentTime, 859 entry, nextWakeupTime, &conflictingPointerActions); 860 } else { 861 // Non touch event. (eg. trackball) 862 injectionResult = findFocusedWindowTargetsLocked(currentTime, 863 entry, nextWakeupTime); 864 } 865 if (injectionResult == INPUT_EVENT_INJECTION_PENDING) { 866 return false; 867 } 868 869 setInjectionResultLocked(entry, injectionResult); 870 if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) { 871 return true; 872 } 873 874 addMonitoringTargetsLocked(); 875 commitTargetsLocked(); 876 } 877 878 // Dispatch the motion. 879 if (conflictingPointerActions) { 880 synthesizeCancelationEventsForAllConnectionsLocked( 881 InputState::CANCEL_POINTER_EVENTS, "Conflicting pointer actions."); 882 } 883 dispatchEventToCurrentInputTargetsLocked(currentTime, entry, false); 884 return true; 885} 886 887 888void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) { 889#if DEBUG_OUTBOUND_EVENT_DETAILS 890 LOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 891 "action=0x%x, flags=0x%x, " 892 "metaState=0x%x, edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld", 893 prefix, 894 entry->eventTime, entry->deviceId, entry->source, entry->policyFlags, 895 entry->action, entry->flags, 896 entry->metaState, entry->edgeFlags, entry->xPrecision, entry->yPrecision, 897 entry->downTime); 898 899 // Print the most recent sample that we have available, this may change due to batching. 900 size_t sampleCount = 1; 901 const MotionSample* sample = & entry->firstSample; 902 for (; sample->next != NULL; sample = sample->next) { 903 sampleCount += 1; 904 } 905 for (uint32_t i = 0; i < entry->pointerCount; i++) { 906 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 907 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 908 "orientation=%f", 909 i, entry->pointerIds[i], 910 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 911 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 912 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 913 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 914 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 915 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 916 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 917 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 918 sample->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 919 } 920 921 // Keep in mind that due to batching, it is possible for the number of samples actually 922 // dispatched to change before the application finally consumed them. 923 if (entry->action == AMOTION_EVENT_ACTION_MOVE) { 924 LOGD(" ... Total movement samples currently batched %d ...", sampleCount); 925 } 926#endif 927} 928 929void InputDispatcher::dispatchEventToCurrentInputTargetsLocked(nsecs_t currentTime, 930 EventEntry* eventEntry, bool resumeWithAppendedMotionSample) { 931#if DEBUG_DISPATCH_CYCLE 932 LOGD("dispatchEventToCurrentInputTargets - " 933 "resumeWithAppendedMotionSample=%s", 934 toString(resumeWithAppendedMotionSample)); 935#endif 936 937 assert(eventEntry->dispatchInProgress); // should already have been set to true 938 939 pokeUserActivityLocked(eventEntry); 940 941 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 942 const InputTarget& inputTarget = mCurrentInputTargets.itemAt(i); 943 944 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 945 if (connectionIndex >= 0) { 946 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 947 prepareDispatchCycleLocked(currentTime, connection, eventEntry, & inputTarget, 948 resumeWithAppendedMotionSample); 949 } else { 950#if DEBUG_FOCUS 951 LOGD("Dropping event delivery to target with channel '%s' because it " 952 "is no longer registered with the input dispatcher.", 953 inputTarget.inputChannel->getName().string()); 954#endif 955 } 956 } 957} 958 959void InputDispatcher::resetTargetsLocked() { 960 mCurrentInputTargetsValid = false; 961 mCurrentInputTargets.clear(); 962 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 963 mInputTargetWaitApplication.clear(); 964} 965 966void InputDispatcher::commitTargetsLocked() { 967 mCurrentInputTargetsValid = true; 968} 969 970int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime, 971 const EventEntry* entry, const InputApplication* application, const InputWindow* window, 972 nsecs_t* nextWakeupTime) { 973 if (application == NULL && window == NULL) { 974 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) { 975#if DEBUG_FOCUS 976 LOGD("Waiting for system to become ready for input."); 977#endif 978 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY; 979 mInputTargetWaitStartTime = currentTime; 980 mInputTargetWaitTimeoutTime = LONG_LONG_MAX; 981 mInputTargetWaitTimeoutExpired = false; 982 mInputTargetWaitApplication.clear(); 983 } 984 } else { 985 if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 986#if DEBUG_FOCUS 987 LOGD("Waiting for application to become ready for input: %s", 988 getApplicationWindowLabelLocked(application, window).string()); 989#endif 990 nsecs_t timeout = window ? window->dispatchingTimeout : 991 application ? application->dispatchingTimeout : DEFAULT_INPUT_DISPATCHING_TIMEOUT; 992 993 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY; 994 mInputTargetWaitStartTime = currentTime; 995 mInputTargetWaitTimeoutTime = currentTime + timeout; 996 mInputTargetWaitTimeoutExpired = false; 997 mInputTargetWaitApplication.clear(); 998 999 if (window && window->inputWindowHandle != NULL) { 1000 mInputTargetWaitApplication = 1001 window->inputWindowHandle->getInputApplicationHandle(); 1002 } 1003 if (mInputTargetWaitApplication == NULL && application) { 1004 mInputTargetWaitApplication = application->inputApplicationHandle; 1005 } 1006 } 1007 } 1008 1009 if (mInputTargetWaitTimeoutExpired) { 1010 return INPUT_EVENT_INJECTION_TIMED_OUT; 1011 } 1012 1013 if (currentTime >= mInputTargetWaitTimeoutTime) { 1014 onANRLocked(currentTime, application, window, entry->eventTime, mInputTargetWaitStartTime); 1015 1016 // Force poll loop to wake up immediately on next iteration once we get the 1017 // ANR response back from the policy. 1018 *nextWakeupTime = LONG_LONG_MIN; 1019 return INPUT_EVENT_INJECTION_PENDING; 1020 } else { 1021 // Force poll loop to wake up when timeout is due. 1022 if (mInputTargetWaitTimeoutTime < *nextWakeupTime) { 1023 *nextWakeupTime = mInputTargetWaitTimeoutTime; 1024 } 1025 return INPUT_EVENT_INJECTION_PENDING; 1026 } 1027} 1028 1029void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout, 1030 const sp<InputChannel>& inputChannel) { 1031 if (newTimeout > 0) { 1032 // Extend the timeout. 1033 mInputTargetWaitTimeoutTime = now() + newTimeout; 1034 } else { 1035 // Give up. 1036 mInputTargetWaitTimeoutExpired = true; 1037 1038 // Release the touch targets. 1039 mTouchState.reset(); 1040 1041 // Input state will not be realistic. Mark it out of sync. 1042 if (inputChannel.get()) { 1043 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 1044 if (connectionIndex >= 0) { 1045 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1046 if (connection->status == Connection::STATUS_NORMAL) { 1047 synthesizeCancelationEventsForConnectionLocked( 1048 connection, InputState::CANCEL_ALL_EVENTS, 1049 "application not responding"); 1050 } 1051 } 1052 } 1053 } 1054} 1055 1056nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked( 1057 nsecs_t currentTime) { 1058 if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) { 1059 return currentTime - mInputTargetWaitStartTime; 1060 } 1061 return 0; 1062} 1063 1064void InputDispatcher::resetANRTimeoutsLocked() { 1065#if DEBUG_FOCUS 1066 LOGD("Resetting ANR timeouts."); 1067#endif 1068 1069 // Reset input target wait timeout. 1070 mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE; 1071} 1072 1073int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime, 1074 const EventEntry* entry, nsecs_t* nextWakeupTime) { 1075 mCurrentInputTargets.clear(); 1076 1077 int32_t injectionResult; 1078 1079 // If there is no currently focused window and no focused application 1080 // then drop the event. 1081 if (! mFocusedWindow) { 1082 if (mFocusedApplication) { 1083#if DEBUG_FOCUS 1084 LOGD("Waiting because there is no focused window but there is a " 1085 "focused application that may eventually add a window: %s.", 1086 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1087#endif 1088 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1089 mFocusedApplication, NULL, nextWakeupTime); 1090 goto Unresponsive; 1091 } 1092 1093 LOGI("Dropping event because there is no focused window or focused application."); 1094 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1095 goto Failed; 1096 } 1097 1098 // Check permissions. 1099 if (! checkInjectionPermission(mFocusedWindow, entry->injectionState)) { 1100 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1101 goto Failed; 1102 } 1103 1104 // If the currently focused window is paused then keep waiting. 1105 if (mFocusedWindow->paused) { 1106#if DEBUG_FOCUS 1107 LOGD("Waiting because focused window is paused."); 1108#endif 1109 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1110 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1111 goto Unresponsive; 1112 } 1113 1114 // If the currently focused window is still working on previous events then keep waiting. 1115 if (! isWindowFinishedWithPreviousInputLocked(mFocusedWindow)) { 1116#if DEBUG_FOCUS 1117 LOGD("Waiting because focused window still processing previous input."); 1118#endif 1119 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1120 mFocusedApplication, mFocusedWindow, nextWakeupTime); 1121 goto Unresponsive; 1122 } 1123 1124 // Success! Output targets. 1125 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1126 addWindowTargetLocked(mFocusedWindow, InputTarget::FLAG_FOREGROUND, BitSet32(0)); 1127 1128 // Done. 1129Failed: 1130Unresponsive: 1131 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1132 updateDispatchStatisticsLocked(currentTime, entry, 1133 injectionResult, timeSpentWaitingForApplication); 1134#if DEBUG_FOCUS 1135 LOGD("findFocusedWindow finished: injectionResult=%d, " 1136 "timeSpendWaitingForApplication=%0.1fms", 1137 injectionResult, timeSpentWaitingForApplication / 1000000.0); 1138#endif 1139 return injectionResult; 1140} 1141 1142int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime, 1143 const MotionEntry* entry, nsecs_t* nextWakeupTime, bool* outConflictingPointerActions) { 1144 enum InjectionPermission { 1145 INJECTION_PERMISSION_UNKNOWN, 1146 INJECTION_PERMISSION_GRANTED, 1147 INJECTION_PERMISSION_DENIED 1148 }; 1149 1150 mCurrentInputTargets.clear(); 1151 1152 nsecs_t startTime = now(); 1153 1154 // For security reasons, we defer updating the touch state until we are sure that 1155 // event injection will be allowed. 1156 // 1157 // FIXME In the original code, screenWasOff could never be set to true. 1158 // The reason is that the POLICY_FLAG_WOKE_HERE 1159 // and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw 1160 // EV_KEY, EV_REL and EV_ABS events. As it happens, the touch event was 1161 // actually enqueued using the policyFlags that appeared in the final EV_SYN 1162 // events upon which no preprocessing took place. So policyFlags was always 0. 1163 // In the new native input dispatcher we're a bit more careful about event 1164 // preprocessing so the touches we receive can actually have non-zero policyFlags. 1165 // Unfortunately we obtain undesirable behavior. 1166 // 1167 // Here's what happens: 1168 // 1169 // When the device dims in anticipation of going to sleep, touches 1170 // in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause 1171 // the device to brighten and reset the user activity timer. 1172 // Touches on other windows (such as the launcher window) 1173 // are dropped. Then after a moment, the device goes to sleep. Oops. 1174 // 1175 // Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE 1176 // instead of POLICY_FLAG_WOKE_HERE... 1177 // 1178 bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE; 1179 1180 int32_t action = entry->action; 1181 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 1182 1183 // Update the touch state as needed based on the properties of the touch event. 1184 int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING; 1185 InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1186 1187 bool isSplit = mTouchState.split; 1188 bool wrongDevice = mTouchState.down 1189 && (mTouchState.deviceId != entry->deviceId 1190 || mTouchState.source != entry->source); 1191 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1192 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1193 || maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1194 bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN; 1195 if (wrongDevice && !down) { 1196 mTempTouchState.copyFrom(mTouchState); 1197 } else { 1198 mTempTouchState.reset(); 1199 mTempTouchState.down = down; 1200 mTempTouchState.deviceId = entry->deviceId; 1201 mTempTouchState.source = entry->source; 1202 isSplit = false; 1203 wrongDevice = false; 1204 } 1205 } else { 1206 mTempTouchState.copyFrom(mTouchState); 1207 } 1208 if (wrongDevice) { 1209#if DEBUG_INPUT_DISPATCHER_POLICY 1210 LOGD("Dropping event because a pointer for a different device is already down."); 1211#endif 1212 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1213 goto Failed; 1214 } 1215 1216 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1217 || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN) 1218 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE 1219 || maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1220 /* Case 1: New splittable pointer going down, or need target for hover or scroll. */ 1221 1222 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1223 int32_t x = int32_t(entry->firstSample.pointerCoords[pointerIndex]. 1224 getAxisValue(AMOTION_EVENT_AXIS_X)); 1225 int32_t y = int32_t(entry->firstSample.pointerCoords[pointerIndex]. 1226 getAxisValue(AMOTION_EVENT_AXIS_Y)); 1227 const InputWindow* newTouchedWindow = NULL; 1228 const InputWindow* topErrorWindow = NULL; 1229 1230 // Traverse windows from front to back to find touched window and outside targets. 1231 size_t numWindows = mWindows.size(); 1232 for (size_t i = 0; i < numWindows; i++) { 1233 const InputWindow* window = & mWindows.editItemAt(i); 1234 int32_t flags = window->layoutParamsFlags; 1235 1236 if (flags & InputWindow::FLAG_SYSTEM_ERROR) { 1237 if (! topErrorWindow) { 1238 topErrorWindow = window; 1239 } 1240 } 1241 1242 if (window->visible) { 1243 if (! (flags & InputWindow::FLAG_NOT_TOUCHABLE)) { 1244 bool isTouchModal = (flags & (InputWindow::FLAG_NOT_FOCUSABLE 1245 | InputWindow::FLAG_NOT_TOUCH_MODAL)) == 0; 1246 if (isTouchModal || window->touchableRegionContainsPoint(x, y)) { 1247 if (! screenWasOff || flags & InputWindow::FLAG_TOUCHABLE_WHEN_WAKING) { 1248 newTouchedWindow = window; 1249 } 1250 break; // found touched window, exit window loop 1251 } 1252 } 1253 1254 if (maskedAction == AMOTION_EVENT_ACTION_DOWN 1255 && (flags & InputWindow::FLAG_WATCH_OUTSIDE_TOUCH)) { 1256 int32_t outsideTargetFlags = InputTarget::FLAG_OUTSIDE; 1257 if (isWindowObscuredAtPointLocked(window, x, y)) { 1258 outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1259 } 1260 1261 mTempTouchState.addOrUpdateWindow(window, outsideTargetFlags, BitSet32(0)); 1262 } 1263 } 1264 } 1265 1266 // If there is an error window but it is not taking focus (typically because 1267 // it is invisible) then wait for it. Any other focused window may in 1268 // fact be in ANR state. 1269 if (topErrorWindow && newTouchedWindow != topErrorWindow) { 1270#if DEBUG_FOCUS 1271 LOGD("Waiting because system error window is pending."); 1272#endif 1273 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1274 NULL, NULL, nextWakeupTime); 1275 injectionPermission = INJECTION_PERMISSION_UNKNOWN; 1276 goto Unresponsive; 1277 } 1278 1279 // Figure out whether splitting will be allowed for this window. 1280 if (newTouchedWindow && newTouchedWindow->supportsSplitTouch()) { 1281 // New window supports splitting. 1282 isSplit = true; 1283 } else if (isSplit) { 1284 // New window does not support splitting but we have already split events. 1285 // Assign the pointer to the first foreground window we find. 1286 // (May be NULL which is why we put this code block before the next check.) 1287 newTouchedWindow = mTempTouchState.getFirstForegroundWindow(); 1288 } 1289 1290 // If we did not find a touched window then fail. 1291 if (! newTouchedWindow) { 1292 if (mFocusedApplication) { 1293#if DEBUG_FOCUS 1294 LOGD("Waiting because there is no touched window but there is a " 1295 "focused application that may eventually add a new window: %s.", 1296 getApplicationWindowLabelLocked(mFocusedApplication, NULL).string()); 1297#endif 1298 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1299 mFocusedApplication, NULL, nextWakeupTime); 1300 goto Unresponsive; 1301 } 1302 1303 LOGI("Dropping event because there is no touched window or focused application."); 1304 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1305 goto Failed; 1306 } 1307 1308 // Set target flags. 1309 int32_t targetFlags = InputTarget::FLAG_FOREGROUND; 1310 if (isSplit) { 1311 targetFlags |= InputTarget::FLAG_SPLIT; 1312 } 1313 if (isWindowObscuredAtPointLocked(newTouchedWindow, x, y)) { 1314 targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED; 1315 } 1316 1317 // Update the temporary touch state. 1318 BitSet32 pointerIds; 1319 if (isSplit) { 1320 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1321 pointerIds.markBit(pointerId); 1322 } 1323 mTempTouchState.addOrUpdateWindow(newTouchedWindow, targetFlags, pointerIds); 1324 } else { 1325 /* Case 2: Pointer move, up, cancel or non-splittable pointer down. */ 1326 1327 // If the pointer is not currently down, then ignore the event. 1328 if (! mTempTouchState.down) { 1329#if DEBUG_INPUT_DISPATCHER_POLICY 1330 LOGD("Dropping event because the pointer is not down or we previously " 1331 "dropped the pointer down event."); 1332#endif 1333 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1334 goto Failed; 1335 } 1336 } 1337 1338 // Check permission to inject into all touched foreground windows and ensure there 1339 // is at least one touched foreground window. 1340 { 1341 bool haveForegroundWindow = false; 1342 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1343 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1344 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1345 haveForegroundWindow = true; 1346 if (! checkInjectionPermission(touchedWindow.window, entry->injectionState)) { 1347 injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED; 1348 injectionPermission = INJECTION_PERMISSION_DENIED; 1349 goto Failed; 1350 } 1351 } 1352 } 1353 if (! haveForegroundWindow) { 1354#if DEBUG_INPUT_DISPATCHER_POLICY 1355 LOGD("Dropping event because there is no touched foreground window to receive it."); 1356#endif 1357 injectionResult = INPUT_EVENT_INJECTION_FAILED; 1358 goto Failed; 1359 } 1360 1361 // Permission granted to injection into all touched foreground windows. 1362 injectionPermission = INJECTION_PERMISSION_GRANTED; 1363 } 1364 1365 // Ensure all touched foreground windows are ready for new input. 1366 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1367 const TouchedWindow& touchedWindow = mTempTouchState.windows[i]; 1368 if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) { 1369 // If the touched window is paused then keep waiting. 1370 if (touchedWindow.window->paused) { 1371#if DEBUG_INPUT_DISPATCHER_POLICY 1372 LOGD("Waiting because touched window is paused."); 1373#endif 1374 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1375 NULL, touchedWindow.window, nextWakeupTime); 1376 goto Unresponsive; 1377 } 1378 1379 // If the touched window is still working on previous events then keep waiting. 1380 if (! isWindowFinishedWithPreviousInputLocked(touchedWindow.window)) { 1381#if DEBUG_FOCUS 1382 LOGD("Waiting because touched window still processing previous input."); 1383#endif 1384 injectionResult = handleTargetsNotReadyLocked(currentTime, entry, 1385 NULL, touchedWindow.window, nextWakeupTime); 1386 goto Unresponsive; 1387 } 1388 } 1389 } 1390 1391 // If this is the first pointer going down and the touched window has a wallpaper 1392 // then also add the touched wallpaper windows so they are locked in for the duration 1393 // of the touch gesture. 1394 // We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper 1395 // engine only supports touch events. We would need to add a mechanism similar 1396 // to View.onGenericMotionEvent to enable wallpapers to handle these events. 1397 if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1398 const InputWindow* foregroundWindow = mTempTouchState.getFirstForegroundWindow(); 1399 if (foregroundWindow->hasWallpaper) { 1400 for (size_t i = 0; i < mWindows.size(); i++) { 1401 const InputWindow* window = & mWindows[i]; 1402 if (window->layoutParamsType == InputWindow::TYPE_WALLPAPER) { 1403 mTempTouchState.addOrUpdateWindow(window, 1404 InputTarget::FLAG_WINDOW_IS_OBSCURED, BitSet32(0)); 1405 } 1406 } 1407 } 1408 } 1409 1410 // Success! Output targets. 1411 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 1412 1413 for (size_t i = 0; i < mTempTouchState.windows.size(); i++) { 1414 const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i); 1415 addWindowTargetLocked(touchedWindow.window, touchedWindow.targetFlags, 1416 touchedWindow.pointerIds); 1417 } 1418 1419 // Drop the outside touch window since we will not care about them in the next iteration. 1420 mTempTouchState.removeOutsideTouchWindows(); 1421 1422Failed: 1423 // Check injection permission once and for all. 1424 if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) { 1425 if (checkInjectionPermission(NULL, entry->injectionState)) { 1426 injectionPermission = INJECTION_PERMISSION_GRANTED; 1427 } else { 1428 injectionPermission = INJECTION_PERMISSION_DENIED; 1429 } 1430 } 1431 1432 // Update final pieces of touch state if the injector had permission. 1433 if (injectionPermission == INJECTION_PERMISSION_GRANTED) { 1434 if (!wrongDevice) { 1435 if (maskedAction == AMOTION_EVENT_ACTION_UP 1436 || maskedAction == AMOTION_EVENT_ACTION_CANCEL 1437 || maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) { 1438 // All pointers up or canceled. 1439 mTouchState.reset(); 1440 } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) { 1441 // First pointer went down. 1442 if (mTouchState.down) { 1443 *outConflictingPointerActions = true; 1444#if DEBUG_FOCUS 1445 LOGD("Pointer down received while already down."); 1446#endif 1447 } 1448 mTouchState.copyFrom(mTempTouchState); 1449 } else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 1450 // One pointer went up. 1451 if (isSplit) { 1452 int32_t pointerIndex = getMotionEventActionPointerIndex(action); 1453 uint32_t pointerId = entry->pointerIds[pointerIndex]; 1454 1455 for (size_t i = 0; i < mTempTouchState.windows.size(); ) { 1456 TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i); 1457 if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) { 1458 touchedWindow.pointerIds.clearBit(pointerId); 1459 if (touchedWindow.pointerIds.isEmpty()) { 1460 mTempTouchState.windows.removeAt(i); 1461 continue; 1462 } 1463 } 1464 i += 1; 1465 } 1466 } 1467 mTouchState.copyFrom(mTempTouchState); 1468 } else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) { 1469 // Discard temporary touch state since it was only valid for this action. 1470 } else { 1471 // Save changes to touch state as-is for all other actions. 1472 mTouchState.copyFrom(mTempTouchState); 1473 } 1474 } 1475 } else { 1476#if DEBUG_FOCUS 1477 LOGD("Not updating touch focus because injection was denied."); 1478#endif 1479 } 1480 1481Unresponsive: 1482 // Reset temporary touch state to ensure we release unnecessary references to input channels. 1483 mTempTouchState.reset(); 1484 1485 nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime); 1486 updateDispatchStatisticsLocked(currentTime, entry, 1487 injectionResult, timeSpentWaitingForApplication); 1488#if DEBUG_FOCUS 1489 LOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, " 1490 "timeSpentWaitingForApplication=%0.1fms", 1491 injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0); 1492#endif 1493 return injectionResult; 1494} 1495 1496void InputDispatcher::addWindowTargetLocked(const InputWindow* window, int32_t targetFlags, 1497 BitSet32 pointerIds) { 1498 mCurrentInputTargets.push(); 1499 1500 InputTarget& target = mCurrentInputTargets.editTop(); 1501 target.inputChannel = window->inputChannel; 1502 target.flags = targetFlags; 1503 target.xOffset = - window->frameLeft; 1504 target.yOffset = - window->frameTop; 1505 target.scaleFactor = window->scaleFactor; 1506 target.pointerIds = pointerIds; 1507} 1508 1509void InputDispatcher::addMonitoringTargetsLocked() { 1510 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 1511 mCurrentInputTargets.push(); 1512 1513 InputTarget& target = mCurrentInputTargets.editTop(); 1514 target.inputChannel = mMonitoringChannels[i]; 1515 target.flags = 0; 1516 target.xOffset = 0; 1517 target.yOffset = 0; 1518 target.scaleFactor = 1.0f; 1519 } 1520} 1521 1522bool InputDispatcher::checkInjectionPermission(const InputWindow* window, 1523 const InjectionState* injectionState) { 1524 if (injectionState 1525 && (window == NULL || window->ownerUid != injectionState->injectorUid) 1526 && !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) { 1527 if (window) { 1528 LOGW("Permission denied: injecting event from pid %d uid %d to window " 1529 "with input channel %s owned by uid %d", 1530 injectionState->injectorPid, injectionState->injectorUid, 1531 window->inputChannel->getName().string(), 1532 window->ownerUid); 1533 } else { 1534 LOGW("Permission denied: injecting event from pid %d uid %d", 1535 injectionState->injectorPid, injectionState->injectorUid); 1536 } 1537 return false; 1538 } 1539 return true; 1540} 1541 1542bool InputDispatcher::isWindowObscuredAtPointLocked( 1543 const InputWindow* window, int32_t x, int32_t y) const { 1544 size_t numWindows = mWindows.size(); 1545 for (size_t i = 0; i < numWindows; i++) { 1546 const InputWindow* other = & mWindows.itemAt(i); 1547 if (other == window) { 1548 break; 1549 } 1550 if (other->visible && ! other->isTrustedOverlay() && other->frameContainsPoint(x, y)) { 1551 return true; 1552 } 1553 } 1554 return false; 1555} 1556 1557bool InputDispatcher::isWindowFinishedWithPreviousInputLocked(const InputWindow* window) { 1558 ssize_t connectionIndex = getConnectionIndexLocked(window->inputChannel); 1559 if (connectionIndex >= 0) { 1560 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 1561 return connection->outboundQueue.isEmpty(); 1562 } else { 1563 return true; 1564 } 1565} 1566 1567String8 InputDispatcher::getApplicationWindowLabelLocked(const InputApplication* application, 1568 const InputWindow* window) { 1569 if (application) { 1570 if (window) { 1571 String8 label(application->name); 1572 label.append(" - "); 1573 label.append(window->name); 1574 return label; 1575 } else { 1576 return application->name; 1577 } 1578 } else if (window) { 1579 return window->name; 1580 } else { 1581 return String8("<unknown application or window>"); 1582 } 1583} 1584 1585void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) { 1586 int32_t eventType = POWER_MANAGER_OTHER_EVENT; 1587 switch (eventEntry->type) { 1588 case EventEntry::TYPE_MOTION: { 1589 const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry); 1590 if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) { 1591 return; 1592 } 1593 1594 if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) { 1595 eventType = POWER_MANAGER_TOUCH_EVENT; 1596 } 1597 break; 1598 } 1599 case EventEntry::TYPE_KEY: { 1600 const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry); 1601 if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) { 1602 return; 1603 } 1604 eventType = POWER_MANAGER_BUTTON_EVENT; 1605 break; 1606 } 1607 } 1608 1609 CommandEntry* commandEntry = postCommandLocked( 1610 & InputDispatcher::doPokeUserActivityLockedInterruptible); 1611 commandEntry->eventTime = eventEntry->eventTime; 1612 commandEntry->userActivityEventType = eventType; 1613} 1614 1615void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime, 1616 const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget, 1617 bool resumeWithAppendedMotionSample) { 1618#if DEBUG_DISPATCH_CYCLE 1619 LOGD("channel '%s' ~ prepareDispatchCycle - flags=%d, " 1620 "xOffset=%f, yOffset=%f, scaleFactor=%f" 1621 "pointerIds=0x%x, " 1622 "resumeWithAppendedMotionSample=%s", 1623 connection->getInputChannelName(), inputTarget->flags, 1624 inputTarget->xOffset, inputTarget->yOffset, 1625 inputTarget->scaleFactor, inputTarget->pointerIds.value, 1626 toString(resumeWithAppendedMotionSample)); 1627#endif 1628 1629 // Make sure we are never called for streaming when splitting across multiple windows. 1630 bool isSplit = inputTarget->flags & InputTarget::FLAG_SPLIT; 1631 assert(! (resumeWithAppendedMotionSample && isSplit)); 1632 1633 // Skip this event if the connection status is not normal. 1634 // We don't want to enqueue additional outbound events if the connection is broken. 1635 if (connection->status != Connection::STATUS_NORMAL) { 1636#if DEBUG_DISPATCH_CYCLE 1637 LOGD("channel '%s' ~ Dropping event because the channel status is %s", 1638 connection->getInputChannelName(), connection->getStatusLabel()); 1639#endif 1640 return; 1641 } 1642 1643 // Split a motion event if needed. 1644 if (isSplit) { 1645 assert(eventEntry->type == EventEntry::TYPE_MOTION); 1646 1647 MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry); 1648 if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) { 1649 MotionEntry* splitMotionEntry = splitMotionEvent( 1650 originalMotionEntry, inputTarget->pointerIds); 1651 if (!splitMotionEntry) { 1652 return; // split event was dropped 1653 } 1654#if DEBUG_FOCUS 1655 LOGD("channel '%s' ~ Split motion event.", 1656 connection->getInputChannelName()); 1657 logOutboundMotionDetailsLocked(" ", splitMotionEntry); 1658#endif 1659 eventEntry = splitMotionEntry; 1660 } 1661 } 1662 1663 // Resume the dispatch cycle with a freshly appended motion sample. 1664 // First we check that the last dispatch entry in the outbound queue is for the same 1665 // motion event to which we appended the motion sample. If we find such a dispatch 1666 // entry, and if it is currently in progress then we try to stream the new sample. 1667 bool wasEmpty = connection->outboundQueue.isEmpty(); 1668 1669 if (! wasEmpty && resumeWithAppendedMotionSample) { 1670 DispatchEntry* motionEventDispatchEntry = 1671 connection->findQueuedDispatchEntryForEvent(eventEntry); 1672 if (motionEventDispatchEntry) { 1673 // If the dispatch entry is not in progress, then we must be busy dispatching an 1674 // earlier event. Not a problem, the motion event is on the outbound queue and will 1675 // be dispatched later. 1676 if (! motionEventDispatchEntry->inProgress) { 1677#if DEBUG_BATCHING 1678 LOGD("channel '%s' ~ Not streaming because the motion event has " 1679 "not yet been dispatched. " 1680 "(Waiting for earlier events to be consumed.)", 1681 connection->getInputChannelName()); 1682#endif 1683 return; 1684 } 1685 1686 // If the dispatch entry is in progress but it already has a tail of pending 1687 // motion samples, then it must mean that the shared memory buffer filled up. 1688 // Not a problem, when this dispatch cycle is finished, we will eventually start 1689 // a new dispatch cycle to process the tail and that tail includes the newly 1690 // appended motion sample. 1691 if (motionEventDispatchEntry->tailMotionSample) { 1692#if DEBUG_BATCHING 1693 LOGD("channel '%s' ~ Not streaming because no new samples can " 1694 "be appended to the motion event in this dispatch cycle. " 1695 "(Waiting for next dispatch cycle to start.)", 1696 connection->getInputChannelName()); 1697#endif 1698 return; 1699 } 1700 1701 // The dispatch entry is in progress and is still potentially open for streaming. 1702 // Try to stream the new motion sample. This might fail if the consumer has already 1703 // consumed the motion event (or if the channel is broken). 1704 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1705 MotionSample* appendedMotionSample = motionEntry->lastSample; 1706 status_t status; 1707 if (motionEventDispatchEntry->scaleFactor == 1.0f) { 1708 status = connection->inputPublisher.appendMotionSample( 1709 appendedMotionSample->eventTime, appendedMotionSample->pointerCoords); 1710 } else { 1711 PointerCoords scaledCoords[MAX_POINTERS]; 1712 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 1713 scaledCoords[i] = appendedMotionSample->pointerCoords[i]; 1714 scaledCoords[i].scale(motionEventDispatchEntry->scaleFactor); 1715 } 1716 status = connection->inputPublisher.appendMotionSample( 1717 appendedMotionSample->eventTime, scaledCoords); 1718 } 1719 if (status == OK) { 1720#if DEBUG_BATCHING 1721 LOGD("channel '%s' ~ Successfully streamed new motion sample.", 1722 connection->getInputChannelName()); 1723#endif 1724 return; 1725 } 1726 1727#if DEBUG_BATCHING 1728 if (status == NO_MEMORY) { 1729 LOGD("channel '%s' ~ Could not append motion sample to currently " 1730 "dispatched move event because the shared memory buffer is full. " 1731 "(Waiting for next dispatch cycle to start.)", 1732 connection->getInputChannelName()); 1733 } else if (status == status_t(FAILED_TRANSACTION)) { 1734 LOGD("channel '%s' ~ Could not append motion sample to currently " 1735 "dispatched move event because the event has already been consumed. " 1736 "(Waiting for next dispatch cycle to start.)", 1737 connection->getInputChannelName()); 1738 } else { 1739 LOGD("channel '%s' ~ Could not append motion sample to currently " 1740 "dispatched move event due to an error, status=%d. " 1741 "(Waiting for next dispatch cycle to start.)", 1742 connection->getInputChannelName(), status); 1743 } 1744#endif 1745 // Failed to stream. Start a new tail of pending motion samples to dispatch 1746 // in the next cycle. 1747 motionEventDispatchEntry->tailMotionSample = appendedMotionSample; 1748 return; 1749 } 1750 } 1751 1752 // This is a new event. 1753 // Enqueue a new dispatch entry onto the outbound queue for this connection. 1754 DispatchEntry* dispatchEntry = mAllocator.obtainDispatchEntry(eventEntry, // increments ref 1755 inputTarget->flags, inputTarget->xOffset, inputTarget->yOffset, 1756 inputTarget->scaleFactor); 1757 if (dispatchEntry->hasForegroundTarget()) { 1758 incrementPendingForegroundDispatchesLocked(eventEntry); 1759 } 1760 1761 // Handle the case where we could not stream a new motion sample because the consumer has 1762 // already consumed the motion event (otherwise the corresponding dispatch entry would 1763 // still be in the outbound queue for this connection). We set the head motion sample 1764 // to the list starting with the newly appended motion sample. 1765 if (resumeWithAppendedMotionSample) { 1766#if DEBUG_BATCHING 1767 LOGD("channel '%s' ~ Preparing a new dispatch cycle for additional motion samples " 1768 "that cannot be streamed because the motion event has already been consumed.", 1769 connection->getInputChannelName()); 1770#endif 1771 MotionSample* appendedMotionSample = static_cast<MotionEntry*>(eventEntry)->lastSample; 1772 dispatchEntry->headMotionSample = appendedMotionSample; 1773 } 1774 1775 // Enqueue the dispatch entry. 1776 connection->outboundQueue.enqueueAtTail(dispatchEntry); 1777 1778 // If the outbound queue was previously empty, start the dispatch cycle going. 1779 if (wasEmpty) { 1780 activateConnectionLocked(connection.get()); 1781 startDispatchCycleLocked(currentTime, connection); 1782 } 1783} 1784 1785void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime, 1786 const sp<Connection>& connection) { 1787#if DEBUG_DISPATCH_CYCLE 1788 LOGD("channel '%s' ~ startDispatchCycle", 1789 connection->getInputChannelName()); 1790#endif 1791 1792 assert(connection->status == Connection::STATUS_NORMAL); 1793 assert(! connection->outboundQueue.isEmpty()); 1794 1795 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1796 assert(! dispatchEntry->inProgress); 1797 1798 // Mark the dispatch entry as in progress. 1799 dispatchEntry->inProgress = true; 1800 1801 // Update the connection's input state. 1802 EventEntry* eventEntry = dispatchEntry->eventEntry; 1803 connection->inputState.trackEvent(eventEntry); 1804 1805 // Publish the event. 1806 status_t status; 1807 switch (eventEntry->type) { 1808 case EventEntry::TYPE_KEY: { 1809 KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry); 1810 1811 // Apply target flags. 1812 int32_t action = keyEntry->action; 1813 int32_t flags = keyEntry->flags; 1814 1815 // Publish the key event. 1816 status = connection->inputPublisher.publishKeyEvent(keyEntry->deviceId, keyEntry->source, 1817 action, flags, keyEntry->keyCode, keyEntry->scanCode, 1818 keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime, 1819 keyEntry->eventTime); 1820 1821 if (status) { 1822 LOGE("channel '%s' ~ Could not publish key event, " 1823 "status=%d", connection->getInputChannelName(), status); 1824 abortBrokenDispatchCycleLocked(currentTime, connection); 1825 return; 1826 } 1827 break; 1828 } 1829 1830 case EventEntry::TYPE_MOTION: { 1831 MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry); 1832 1833 // Apply target flags. 1834 int32_t action = motionEntry->action; 1835 int32_t flags = motionEntry->flags; 1836 if (dispatchEntry->targetFlags & InputTarget::FLAG_OUTSIDE) { 1837 action = AMOTION_EVENT_ACTION_OUTSIDE; 1838 } 1839 if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) { 1840 flags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED; 1841 } 1842 1843 // If headMotionSample is non-NULL, then it points to the first new sample that we 1844 // were unable to dispatch during the previous cycle so we resume dispatching from 1845 // that point in the list of motion samples. 1846 // Otherwise, we just start from the first sample of the motion event. 1847 MotionSample* firstMotionSample = dispatchEntry->headMotionSample; 1848 if (! firstMotionSample) { 1849 firstMotionSample = & motionEntry->firstSample; 1850 } 1851 1852 PointerCoords scaledCoords[MAX_POINTERS]; 1853 const PointerCoords* usingCoords = firstMotionSample->pointerCoords; 1854 1855 // Set the X and Y offset depending on the input source. 1856 float xOffset, yOffset, scaleFactor; 1857 if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) { 1858 scaleFactor = dispatchEntry->scaleFactor; 1859 xOffset = dispatchEntry->xOffset * scaleFactor; 1860 yOffset = dispatchEntry->yOffset * scaleFactor; 1861 if (scaleFactor != 1.0f) { 1862 for (size_t i = 0; i < motionEntry->pointerCount; i++) { 1863 scaledCoords[i] = firstMotionSample->pointerCoords[i]; 1864 scaledCoords[i].scale(scaleFactor); 1865 } 1866 usingCoords = scaledCoords; 1867 } 1868 } else { 1869 xOffset = 0.0f; 1870 yOffset = 0.0f; 1871 scaleFactor = 1.0f; 1872 } 1873 1874 // Publish the motion event and the first motion sample. 1875 status = connection->inputPublisher.publishMotionEvent(motionEntry->deviceId, 1876 motionEntry->source, action, flags, motionEntry->edgeFlags, motionEntry->metaState, 1877 xOffset, yOffset, motionEntry->xPrecision, motionEntry->yPrecision, 1878 motionEntry->downTime, firstMotionSample->eventTime, 1879 motionEntry->pointerCount, motionEntry->pointerIds, usingCoords); 1880 1881 if (status) { 1882 LOGE("channel '%s' ~ Could not publish motion event, " 1883 "status=%d", connection->getInputChannelName(), status); 1884 abortBrokenDispatchCycleLocked(currentTime, connection); 1885 return; 1886 } 1887 1888 // Append additional motion samples. 1889 MotionSample* nextMotionSample = firstMotionSample->next; 1890 for (; nextMotionSample != NULL; nextMotionSample = nextMotionSample->next) { 1891 status = connection->inputPublisher.appendMotionSample( 1892 nextMotionSample->eventTime, usingCoords); 1893 if (status == NO_MEMORY) { 1894#if DEBUG_DISPATCH_CYCLE 1895 LOGD("channel '%s' ~ Shared memory buffer full. Some motion samples will " 1896 "be sent in the next dispatch cycle.", 1897 connection->getInputChannelName()); 1898#endif 1899 break; 1900 } 1901 if (status != OK) { 1902 LOGE("channel '%s' ~ Could not append motion sample " 1903 "for a reason other than out of memory, status=%d", 1904 connection->getInputChannelName(), status); 1905 abortBrokenDispatchCycleLocked(currentTime, connection); 1906 return; 1907 } 1908 } 1909 1910 // Remember the next motion sample that we could not dispatch, in case we ran out 1911 // of space in the shared memory buffer. 1912 dispatchEntry->tailMotionSample = nextMotionSample; 1913 break; 1914 } 1915 1916 default: { 1917 assert(false); 1918 } 1919 } 1920 1921 // Send the dispatch signal. 1922 status = connection->inputPublisher.sendDispatchSignal(); 1923 if (status) { 1924 LOGE("channel '%s' ~ Could not send dispatch signal, status=%d", 1925 connection->getInputChannelName(), status); 1926 abortBrokenDispatchCycleLocked(currentTime, connection); 1927 return; 1928 } 1929 1930 // Record information about the newly started dispatch cycle. 1931 connection->lastEventTime = eventEntry->eventTime; 1932 connection->lastDispatchTime = currentTime; 1933 1934 // Notify other system components. 1935 onDispatchCycleStartedLocked(currentTime, connection); 1936} 1937 1938void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime, 1939 const sp<Connection>& connection, bool handled) { 1940#if DEBUG_DISPATCH_CYCLE 1941 LOGD("channel '%s' ~ finishDispatchCycle - %01.1fms since event, " 1942 "%01.1fms since dispatch, handled=%s", 1943 connection->getInputChannelName(), 1944 connection->getEventLatencyMillis(currentTime), 1945 connection->getDispatchLatencyMillis(currentTime), 1946 toString(handled)); 1947#endif 1948 1949 if (connection->status == Connection::STATUS_BROKEN 1950 || connection->status == Connection::STATUS_ZOMBIE) { 1951 return; 1952 } 1953 1954 // Reset the publisher since the event has been consumed. 1955 // We do this now so that the publisher can release some of its internal resources 1956 // while waiting for the next dispatch cycle to begin. 1957 status_t status = connection->inputPublisher.reset(); 1958 if (status) { 1959 LOGE("channel '%s' ~ Could not reset publisher, status=%d", 1960 connection->getInputChannelName(), status); 1961 abortBrokenDispatchCycleLocked(currentTime, connection); 1962 return; 1963 } 1964 1965 // Notify other system components and prepare to start the next dispatch cycle. 1966 onDispatchCycleFinishedLocked(currentTime, connection, handled); 1967} 1968 1969void InputDispatcher::startNextDispatchCycleLocked(nsecs_t currentTime, 1970 const sp<Connection>& connection) { 1971 // Start the next dispatch cycle for this connection. 1972 while (! connection->outboundQueue.isEmpty()) { 1973 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 1974 if (dispatchEntry->inProgress) { 1975 // Finish or resume current event in progress. 1976 if (dispatchEntry->tailMotionSample) { 1977 // We have a tail of undispatched motion samples. 1978 // Reuse the same DispatchEntry and start a new cycle. 1979 dispatchEntry->inProgress = false; 1980 dispatchEntry->headMotionSample = dispatchEntry->tailMotionSample; 1981 dispatchEntry->tailMotionSample = NULL; 1982 startDispatchCycleLocked(currentTime, connection); 1983 return; 1984 } 1985 // Finished. 1986 connection->outboundQueue.dequeueAtHead(); 1987 if (dispatchEntry->hasForegroundTarget()) { 1988 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 1989 } 1990 mAllocator.releaseDispatchEntry(dispatchEntry); 1991 } else { 1992 // If the head is not in progress, then we must have already dequeued the in 1993 // progress event, which means we actually aborted it. 1994 // So just start the next event for this connection. 1995 startDispatchCycleLocked(currentTime, connection); 1996 return; 1997 } 1998 } 1999 2000 // Outbound queue is empty, deactivate the connection. 2001 deactivateConnectionLocked(connection.get()); 2002} 2003 2004void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime, 2005 const sp<Connection>& connection) { 2006#if DEBUG_DISPATCH_CYCLE 2007 LOGD("channel '%s' ~ abortBrokenDispatchCycle", 2008 connection->getInputChannelName()); 2009#endif 2010 2011 // Clear the outbound queue. 2012 drainOutboundQueueLocked(connection.get()); 2013 2014 // The connection appears to be unrecoverably broken. 2015 // Ignore already broken or zombie connections. 2016 if (connection->status == Connection::STATUS_NORMAL) { 2017 connection->status = Connection::STATUS_BROKEN; 2018 2019 // Notify other system components. 2020 onDispatchCycleBrokenLocked(currentTime, connection); 2021 } 2022} 2023 2024void InputDispatcher::drainOutboundQueueLocked(Connection* connection) { 2025 while (! connection->outboundQueue.isEmpty()) { 2026 DispatchEntry* dispatchEntry = connection->outboundQueue.dequeueAtHead(); 2027 if (dispatchEntry->hasForegroundTarget()) { 2028 decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry); 2029 } 2030 mAllocator.releaseDispatchEntry(dispatchEntry); 2031 } 2032 2033 deactivateConnectionLocked(connection); 2034} 2035 2036int InputDispatcher::handleReceiveCallback(int receiveFd, int events, void* data) { 2037 InputDispatcher* d = static_cast<InputDispatcher*>(data); 2038 2039 { // acquire lock 2040 AutoMutex _l(d->mLock); 2041 2042 ssize_t connectionIndex = d->mConnectionsByReceiveFd.indexOfKey(receiveFd); 2043 if (connectionIndex < 0) { 2044 LOGE("Received spurious receive callback for unknown input channel. " 2045 "fd=%d, events=0x%x", receiveFd, events); 2046 return 0; // remove the callback 2047 } 2048 2049 nsecs_t currentTime = now(); 2050 2051 sp<Connection> connection = d->mConnectionsByReceiveFd.valueAt(connectionIndex); 2052 if (events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP)) { 2053 LOGE("channel '%s' ~ Consumer closed input channel or an error occurred. " 2054 "events=0x%x", connection->getInputChannelName(), events); 2055 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2056 d->runCommandsLockedInterruptible(); 2057 return 0; // remove the callback 2058 } 2059 2060 if (! (events & ALOOPER_EVENT_INPUT)) { 2061 LOGW("channel '%s' ~ Received spurious callback for unhandled poll event. " 2062 "events=0x%x", connection->getInputChannelName(), events); 2063 return 1; 2064 } 2065 2066 bool handled = false; 2067 status_t status = connection->inputPublisher.receiveFinishedSignal(&handled); 2068 if (status) { 2069 LOGE("channel '%s' ~ Failed to receive finished signal. status=%d", 2070 connection->getInputChannelName(), status); 2071 d->abortBrokenDispatchCycleLocked(currentTime, connection); 2072 d->runCommandsLockedInterruptible(); 2073 return 0; // remove the callback 2074 } 2075 2076 d->finishDispatchCycleLocked(currentTime, connection, handled); 2077 d->runCommandsLockedInterruptible(); 2078 return 1; 2079 } // release lock 2080} 2081 2082void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked( 2083 InputState::CancelationOptions options, const char* reason) { 2084 for (size_t i = 0; i < mConnectionsByReceiveFd.size(); i++) { 2085 synthesizeCancelationEventsForConnectionLocked( 2086 mConnectionsByReceiveFd.valueAt(i), options, reason); 2087 } 2088} 2089 2090void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked( 2091 const sp<InputChannel>& channel, InputState::CancelationOptions options, 2092 const char* reason) { 2093 ssize_t index = getConnectionIndexLocked(channel); 2094 if (index >= 0) { 2095 synthesizeCancelationEventsForConnectionLocked( 2096 mConnectionsByReceiveFd.valueAt(index), options, reason); 2097 } 2098} 2099 2100void InputDispatcher::synthesizeCancelationEventsForConnectionLocked( 2101 const sp<Connection>& connection, InputState::CancelationOptions options, 2102 const char* reason) { 2103 nsecs_t currentTime = now(); 2104 2105 mTempCancelationEvents.clear(); 2106 connection->inputState.synthesizeCancelationEvents(currentTime, & mAllocator, 2107 mTempCancelationEvents, options); 2108 2109 if (! mTempCancelationEvents.isEmpty() 2110 && connection->status != Connection::STATUS_BROKEN) { 2111#if DEBUG_OUTBOUND_EVENT_DETAILS 2112 LOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync " 2113 "with reality: %s, options=%d.", 2114 connection->getInputChannelName(), mTempCancelationEvents.size(), reason, options); 2115#endif 2116 for (size_t i = 0; i < mTempCancelationEvents.size(); i++) { 2117 EventEntry* cancelationEventEntry = mTempCancelationEvents.itemAt(i); 2118 switch (cancelationEventEntry->type) { 2119 case EventEntry::TYPE_KEY: 2120 logOutboundKeyDetailsLocked("cancel - ", 2121 static_cast<KeyEntry*>(cancelationEventEntry)); 2122 break; 2123 case EventEntry::TYPE_MOTION: 2124 logOutboundMotionDetailsLocked("cancel - ", 2125 static_cast<MotionEntry*>(cancelationEventEntry)); 2126 break; 2127 } 2128 2129 int32_t xOffset, yOffset; 2130 float scaleFactor; 2131 const InputWindow* window = getWindowLocked(connection->inputChannel); 2132 if (window) { 2133 xOffset = -window->frameLeft; 2134 yOffset = -window->frameTop; 2135 scaleFactor = window->scaleFactor; 2136 } else { 2137 xOffset = 0; 2138 yOffset = 0; 2139 scaleFactor = 1.0f; 2140 } 2141 2142 DispatchEntry* cancelationDispatchEntry = 2143 mAllocator.obtainDispatchEntry(cancelationEventEntry, // increments ref 2144 0, xOffset, yOffset, scaleFactor); 2145 connection->outboundQueue.enqueueAtTail(cancelationDispatchEntry); 2146 2147 mAllocator.releaseEventEntry(cancelationEventEntry); 2148 } 2149 2150 if (!connection->outboundQueue.headSentinel.next->inProgress) { 2151 startDispatchCycleLocked(currentTime, connection); 2152 } 2153 } 2154} 2155 2156InputDispatcher::MotionEntry* 2157InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) { 2158 assert(pointerIds.value != 0); 2159 2160 uint32_t splitPointerIndexMap[MAX_POINTERS]; 2161 int32_t splitPointerIds[MAX_POINTERS]; 2162 PointerCoords splitPointerCoords[MAX_POINTERS]; 2163 2164 uint32_t originalPointerCount = originalMotionEntry->pointerCount; 2165 uint32_t splitPointerCount = 0; 2166 2167 for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount; 2168 originalPointerIndex++) { 2169 int32_t pointerId = uint32_t(originalMotionEntry->pointerIds[originalPointerIndex]); 2170 if (pointerIds.hasBit(pointerId)) { 2171 splitPointerIndexMap[splitPointerCount] = originalPointerIndex; 2172 splitPointerIds[splitPointerCount] = pointerId; 2173 splitPointerCoords[splitPointerCount] = 2174 originalMotionEntry->firstSample.pointerCoords[originalPointerIndex]; 2175 splitPointerCount += 1; 2176 } 2177 } 2178 2179 if (splitPointerCount != pointerIds.count()) { 2180 // This is bad. We are missing some of the pointers that we expected to deliver. 2181 // Most likely this indicates that we received an ACTION_MOVE events that has 2182 // different pointer ids than we expected based on the previous ACTION_DOWN 2183 // or ACTION_POINTER_DOWN events that caused us to decide to split the pointers 2184 // in this way. 2185 LOGW("Dropping split motion event because the pointer count is %d but " 2186 "we expected there to be %d pointers. This probably means we received " 2187 "a broken sequence of pointer ids from the input device.", 2188 splitPointerCount, pointerIds.count()); 2189 return NULL; 2190 } 2191 2192 int32_t action = originalMotionEntry->action; 2193 int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK; 2194 if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2195 || maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) { 2196 int32_t originalPointerIndex = getMotionEventActionPointerIndex(action); 2197 int32_t pointerId = originalMotionEntry->pointerIds[originalPointerIndex]; 2198 if (pointerIds.hasBit(pointerId)) { 2199 if (pointerIds.count() == 1) { 2200 // The first/last pointer went down/up. 2201 action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN 2202 ? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP; 2203 } else { 2204 // A secondary pointer went down/up. 2205 uint32_t splitPointerIndex = 0; 2206 while (pointerId != splitPointerIds[splitPointerIndex]) { 2207 splitPointerIndex += 1; 2208 } 2209 action = maskedAction | (splitPointerIndex 2210 << AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT); 2211 } 2212 } else { 2213 // An unrelated pointer changed. 2214 action = AMOTION_EVENT_ACTION_MOVE; 2215 } 2216 } 2217 2218 MotionEntry* splitMotionEntry = mAllocator.obtainMotionEntry( 2219 originalMotionEntry->eventTime, 2220 originalMotionEntry->deviceId, 2221 originalMotionEntry->source, 2222 originalMotionEntry->policyFlags, 2223 action, 2224 originalMotionEntry->flags, 2225 originalMotionEntry->metaState, 2226 originalMotionEntry->edgeFlags, 2227 originalMotionEntry->xPrecision, 2228 originalMotionEntry->yPrecision, 2229 originalMotionEntry->downTime, 2230 splitPointerCount, splitPointerIds, splitPointerCoords); 2231 2232 for (MotionSample* originalMotionSample = originalMotionEntry->firstSample.next; 2233 originalMotionSample != NULL; originalMotionSample = originalMotionSample->next) { 2234 for (uint32_t splitPointerIndex = 0; splitPointerIndex < splitPointerCount; 2235 splitPointerIndex++) { 2236 uint32_t originalPointerIndex = splitPointerIndexMap[splitPointerIndex]; 2237 splitPointerCoords[splitPointerIndex] = 2238 originalMotionSample->pointerCoords[originalPointerIndex]; 2239 } 2240 2241 mAllocator.appendMotionSample(splitMotionEntry, originalMotionSample->eventTime, 2242 splitPointerCoords); 2243 } 2244 2245 return splitMotionEntry; 2246} 2247 2248void InputDispatcher::notifyConfigurationChanged(nsecs_t eventTime) { 2249#if DEBUG_INBOUND_EVENT_DETAILS 2250 LOGD("notifyConfigurationChanged - eventTime=%lld", eventTime); 2251#endif 2252 2253 bool needWake; 2254 { // acquire lock 2255 AutoMutex _l(mLock); 2256 2257 ConfigurationChangedEntry* newEntry = mAllocator.obtainConfigurationChangedEntry(eventTime); 2258 needWake = enqueueInboundEventLocked(newEntry); 2259 } // release lock 2260 2261 if (needWake) { 2262 mLooper->wake(); 2263 } 2264} 2265 2266void InputDispatcher::notifyKey(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2267 uint32_t policyFlags, int32_t action, int32_t flags, 2268 int32_t keyCode, int32_t scanCode, int32_t metaState, nsecs_t downTime) { 2269#if DEBUG_INBOUND_EVENT_DETAILS 2270 LOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, " 2271 "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld", 2272 eventTime, deviceId, source, policyFlags, action, flags, 2273 keyCode, scanCode, metaState, downTime); 2274#endif 2275 if (! validateKeyEvent(action)) { 2276 return; 2277 } 2278 2279 if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) { 2280 policyFlags |= POLICY_FLAG_VIRTUAL; 2281 flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY; 2282 } 2283 if (policyFlags & POLICY_FLAG_ALT) { 2284 metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON; 2285 } 2286 if (policyFlags & POLICY_FLAG_ALT_GR) { 2287 metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON; 2288 } 2289 if (policyFlags & POLICY_FLAG_SHIFT) { 2290 metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON; 2291 } 2292 if (policyFlags & POLICY_FLAG_CAPS_LOCK) { 2293 metaState |= AMETA_CAPS_LOCK_ON; 2294 } 2295 if (policyFlags & POLICY_FLAG_FUNCTION) { 2296 metaState |= AMETA_FUNCTION_ON; 2297 } 2298 2299 policyFlags |= POLICY_FLAG_TRUSTED; 2300 2301 KeyEvent event; 2302 event.initialize(deviceId, source, action, flags, keyCode, scanCode, 2303 metaState, 0, downTime, eventTime); 2304 2305 mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags); 2306 2307 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2308 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2309 } 2310 2311 bool needWake; 2312 { // acquire lock 2313 AutoMutex _l(mLock); 2314 2315 int32_t repeatCount = 0; 2316 KeyEntry* newEntry = mAllocator.obtainKeyEntry(eventTime, 2317 deviceId, source, policyFlags, action, flags, keyCode, scanCode, 2318 metaState, repeatCount, downTime); 2319 2320 needWake = enqueueInboundEventLocked(newEntry); 2321 } // release lock 2322 2323 if (needWake) { 2324 mLooper->wake(); 2325 } 2326} 2327 2328void InputDispatcher::notifyMotion(nsecs_t eventTime, int32_t deviceId, uint32_t source, 2329 uint32_t policyFlags, int32_t action, int32_t flags, int32_t metaState, int32_t edgeFlags, 2330 uint32_t pointerCount, const int32_t* pointerIds, const PointerCoords* pointerCoords, 2331 float xPrecision, float yPrecision, nsecs_t downTime) { 2332#if DEBUG_INBOUND_EVENT_DETAILS 2333 LOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, " 2334 "action=0x%x, flags=0x%x, metaState=0x%x, edgeFlags=0x%x, " 2335 "xPrecision=%f, yPrecision=%f, downTime=%lld", 2336 eventTime, deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2337 xPrecision, yPrecision, downTime); 2338 for (uint32_t i = 0; i < pointerCount; i++) { 2339 LOGD(" Pointer %d: id=%d, x=%f, y=%f, pressure=%f, size=%f, " 2340 "touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, " 2341 "orientation=%f", 2342 i, pointerIds[i], 2343 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X), 2344 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y), 2345 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE), 2346 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE), 2347 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR), 2348 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR), 2349 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR), 2350 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR), 2351 pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION)); 2352 } 2353#endif 2354 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2355 return; 2356 } 2357 2358 policyFlags |= POLICY_FLAG_TRUSTED; 2359 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2360 2361 bool needWake; 2362 { // acquire lock 2363 AutoMutex _l(mLock); 2364 2365 // Attempt batching and streaming of move events. 2366 if (action == AMOTION_EVENT_ACTION_MOVE 2367 || action == AMOTION_EVENT_ACTION_HOVER_MOVE) { 2368 // BATCHING CASE 2369 // 2370 // Try to append a move sample to the tail of the inbound queue for this device. 2371 // Give up if we encounter a non-move motion event for this device since that 2372 // means we cannot append any new samples until a new motion event has started. 2373 for (EventEntry* entry = mInboundQueue.tailSentinel.prev; 2374 entry != & mInboundQueue.headSentinel; entry = entry->prev) { 2375 if (entry->type != EventEntry::TYPE_MOTION) { 2376 // Keep looking for motion events. 2377 continue; 2378 } 2379 2380 MotionEntry* motionEntry = static_cast<MotionEntry*>(entry); 2381 if (motionEntry->deviceId != deviceId 2382 || motionEntry->source != source) { 2383 // Keep looking for this device and source. 2384 continue; 2385 } 2386 2387 if (motionEntry->action != action 2388 || motionEntry->pointerCount != pointerCount 2389 || motionEntry->isInjected()) { 2390 // Last motion event in the queue for this device and source is 2391 // not compatible for appending new samples. Stop here. 2392 goto NoBatchingOrStreaming; 2393 } 2394 2395 // The last motion event is a move and is compatible for appending. 2396 // Do the batching magic. 2397 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2398#if DEBUG_BATCHING 2399 LOGD("Appended motion sample onto batch for most recent " 2400 "motion event for this device in the inbound queue."); 2401#endif 2402 return; // done! 2403 } 2404 2405 // STREAMING CASE 2406 // 2407 // There is no pending motion event (of any kind) for this device in the inbound queue. 2408 // Search the outbound queue for the current foreground targets to find a dispatched 2409 // motion event that is still in progress. If found, then, appen the new sample to 2410 // that event and push it out to all current targets. The logic in 2411 // prepareDispatchCycleLocked takes care of the case where some targets may 2412 // already have consumed the motion event by starting a new dispatch cycle if needed. 2413 if (mCurrentInputTargetsValid) { 2414 for (size_t i = 0; i < mCurrentInputTargets.size(); i++) { 2415 const InputTarget& inputTarget = mCurrentInputTargets[i]; 2416 if ((inputTarget.flags & InputTarget::FLAG_FOREGROUND) == 0) { 2417 // Skip non-foreground targets. We only want to stream if there is at 2418 // least one foreground target whose dispatch is still in progress. 2419 continue; 2420 } 2421 2422 ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel); 2423 if (connectionIndex < 0) { 2424 // Connection must no longer be valid. 2425 continue; 2426 } 2427 2428 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 2429 if (connection->outboundQueue.isEmpty()) { 2430 // This foreground target has an empty outbound queue. 2431 continue; 2432 } 2433 2434 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 2435 if (! dispatchEntry->inProgress 2436 || dispatchEntry->eventEntry->type != EventEntry::TYPE_MOTION 2437 || dispatchEntry->isSplit()) { 2438 // No motion event is being dispatched, or it is being split across 2439 // windows in which case we cannot stream. 2440 continue; 2441 } 2442 2443 MotionEntry* motionEntry = static_cast<MotionEntry*>( 2444 dispatchEntry->eventEntry); 2445 if (motionEntry->action != action 2446 || motionEntry->deviceId != deviceId 2447 || motionEntry->source != source 2448 || motionEntry->pointerCount != pointerCount 2449 || motionEntry->isInjected()) { 2450 // The motion event is not compatible with this move. 2451 continue; 2452 } 2453 2454 // Hurray! This foreground target is currently dispatching a move event 2455 // that we can stream onto. Append the motion sample and resume dispatch. 2456 mAllocator.appendMotionSample(motionEntry, eventTime, pointerCoords); 2457#if DEBUG_BATCHING 2458 LOGD("Appended motion sample onto batch for most recently dispatched " 2459 "motion event for this device in the outbound queues. " 2460 "Attempting to stream the motion sample."); 2461#endif 2462 nsecs_t currentTime = now(); 2463 dispatchEventToCurrentInputTargetsLocked(currentTime, motionEntry, 2464 true /*resumeWithAppendedMotionSample*/); 2465 2466 runCommandsLockedInterruptible(); 2467 return; // done! 2468 } 2469 } 2470 2471NoBatchingOrStreaming:; 2472 } 2473 2474 // Just enqueue a new motion event. 2475 MotionEntry* newEntry = mAllocator.obtainMotionEntry(eventTime, 2476 deviceId, source, policyFlags, action, flags, metaState, edgeFlags, 2477 xPrecision, yPrecision, downTime, 2478 pointerCount, pointerIds, pointerCoords); 2479 2480 needWake = enqueueInboundEventLocked(newEntry); 2481 } // release lock 2482 2483 if (needWake) { 2484 mLooper->wake(); 2485 } 2486} 2487 2488void InputDispatcher::notifySwitch(nsecs_t when, int32_t switchCode, int32_t switchValue, 2489 uint32_t policyFlags) { 2490#if DEBUG_INBOUND_EVENT_DETAILS 2491 LOGD("notifySwitch - switchCode=%d, switchValue=%d, policyFlags=0x%x", 2492 switchCode, switchValue, policyFlags); 2493#endif 2494 2495 policyFlags |= POLICY_FLAG_TRUSTED; 2496 mPolicy->notifySwitch(when, switchCode, switchValue, policyFlags); 2497} 2498 2499int32_t InputDispatcher::injectInputEvent(const InputEvent* event, 2500 int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis) { 2501#if DEBUG_INBOUND_EVENT_DETAILS 2502 LOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, " 2503 "syncMode=%d, timeoutMillis=%d", 2504 event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis); 2505#endif 2506 2507 nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis); 2508 2509 uint32_t policyFlags = POLICY_FLAG_INJECTED; 2510 if (hasInjectionPermission(injectorPid, injectorUid)) { 2511 policyFlags |= POLICY_FLAG_TRUSTED; 2512 } 2513 2514 EventEntry* injectedEntry; 2515 switch (event->getType()) { 2516 case AINPUT_EVENT_TYPE_KEY: { 2517 const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event); 2518 int32_t action = keyEvent->getAction(); 2519 if (! validateKeyEvent(action)) { 2520 return INPUT_EVENT_INJECTION_FAILED; 2521 } 2522 2523 int32_t flags = keyEvent->getFlags(); 2524 if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) { 2525 policyFlags |= POLICY_FLAG_VIRTUAL; 2526 } 2527 2528 mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags); 2529 2530 if (policyFlags & POLICY_FLAG_WOKE_HERE) { 2531 flags |= AKEY_EVENT_FLAG_WOKE_HERE; 2532 } 2533 2534 mLock.lock(); 2535 injectedEntry = mAllocator.obtainKeyEntry(keyEvent->getEventTime(), 2536 keyEvent->getDeviceId(), keyEvent->getSource(), 2537 policyFlags, action, flags, 2538 keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(), 2539 keyEvent->getRepeatCount(), keyEvent->getDownTime()); 2540 break; 2541 } 2542 2543 case AINPUT_EVENT_TYPE_MOTION: { 2544 const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event); 2545 int32_t action = motionEvent->getAction(); 2546 size_t pointerCount = motionEvent->getPointerCount(); 2547 const int32_t* pointerIds = motionEvent->getPointerIds(); 2548 if (! validateMotionEvent(action, pointerCount, pointerIds)) { 2549 return INPUT_EVENT_INJECTION_FAILED; 2550 } 2551 2552 nsecs_t eventTime = motionEvent->getEventTime(); 2553 mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags); 2554 2555 mLock.lock(); 2556 const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes(); 2557 const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords(); 2558 MotionEntry* motionEntry = mAllocator.obtainMotionEntry(*sampleEventTimes, 2559 motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags, 2560 action, motionEvent->getFlags(), 2561 motionEvent->getMetaState(), motionEvent->getEdgeFlags(), 2562 motionEvent->getXPrecision(), motionEvent->getYPrecision(), 2563 motionEvent->getDownTime(), uint32_t(pointerCount), 2564 pointerIds, samplePointerCoords); 2565 for (size_t i = motionEvent->getHistorySize(); i > 0; i--) { 2566 sampleEventTimes += 1; 2567 samplePointerCoords += pointerCount; 2568 mAllocator.appendMotionSample(motionEntry, *sampleEventTimes, samplePointerCoords); 2569 } 2570 injectedEntry = motionEntry; 2571 break; 2572 } 2573 2574 default: 2575 LOGW("Cannot inject event of type %d", event->getType()); 2576 return INPUT_EVENT_INJECTION_FAILED; 2577 } 2578 2579 InjectionState* injectionState = mAllocator.obtainInjectionState(injectorPid, injectorUid); 2580 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2581 injectionState->injectionIsAsync = true; 2582 } 2583 2584 injectionState->refCount += 1; 2585 injectedEntry->injectionState = injectionState; 2586 2587 bool needWake = enqueueInboundEventLocked(injectedEntry); 2588 mLock.unlock(); 2589 2590 if (needWake) { 2591 mLooper->wake(); 2592 } 2593 2594 int32_t injectionResult; 2595 { // acquire lock 2596 AutoMutex _l(mLock); 2597 2598 if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) { 2599 injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED; 2600 } else { 2601 for (;;) { 2602 injectionResult = injectionState->injectionResult; 2603 if (injectionResult != INPUT_EVENT_INJECTION_PENDING) { 2604 break; 2605 } 2606 2607 nsecs_t remainingTimeout = endTime - now(); 2608 if (remainingTimeout <= 0) { 2609#if DEBUG_INJECTION 2610 LOGD("injectInputEvent - Timed out waiting for injection result " 2611 "to become available."); 2612#endif 2613 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2614 break; 2615 } 2616 2617 mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout); 2618 } 2619 2620 if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED 2621 && syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) { 2622 while (injectionState->pendingForegroundDispatches != 0) { 2623#if DEBUG_INJECTION 2624 LOGD("injectInputEvent - Waiting for %d pending foreground dispatches.", 2625 injectionState->pendingForegroundDispatches); 2626#endif 2627 nsecs_t remainingTimeout = endTime - now(); 2628 if (remainingTimeout <= 0) { 2629#if DEBUG_INJECTION 2630 LOGD("injectInputEvent - Timed out waiting for pending foreground " 2631 "dispatches to finish."); 2632#endif 2633 injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT; 2634 break; 2635 } 2636 2637 mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout); 2638 } 2639 } 2640 } 2641 2642 mAllocator.releaseInjectionState(injectionState); 2643 } // release lock 2644 2645#if DEBUG_INJECTION 2646 LOGD("injectInputEvent - Finished with result %d. " 2647 "injectorPid=%d, injectorUid=%d", 2648 injectionResult, injectorPid, injectorUid); 2649#endif 2650 2651 return injectionResult; 2652} 2653 2654bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) { 2655 return injectorUid == 0 2656 || mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid); 2657} 2658 2659void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) { 2660 InjectionState* injectionState = entry->injectionState; 2661 if (injectionState) { 2662#if DEBUG_INJECTION 2663 LOGD("Setting input event injection result to %d. " 2664 "injectorPid=%d, injectorUid=%d", 2665 injectionResult, injectionState->injectorPid, injectionState->injectorUid); 2666#endif 2667 2668 if (injectionState->injectionIsAsync) { 2669 // Log the outcome since the injector did not wait for the injection result. 2670 switch (injectionResult) { 2671 case INPUT_EVENT_INJECTION_SUCCEEDED: 2672 LOGV("Asynchronous input event injection succeeded."); 2673 break; 2674 case INPUT_EVENT_INJECTION_FAILED: 2675 LOGW("Asynchronous input event injection failed."); 2676 break; 2677 case INPUT_EVENT_INJECTION_PERMISSION_DENIED: 2678 LOGW("Asynchronous input event injection permission denied."); 2679 break; 2680 case INPUT_EVENT_INJECTION_TIMED_OUT: 2681 LOGW("Asynchronous input event injection timed out."); 2682 break; 2683 } 2684 } 2685 2686 injectionState->injectionResult = injectionResult; 2687 mInjectionResultAvailableCondition.broadcast(); 2688 } 2689} 2690 2691void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2692 InjectionState* injectionState = entry->injectionState; 2693 if (injectionState) { 2694 injectionState->pendingForegroundDispatches += 1; 2695 } 2696} 2697 2698void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) { 2699 InjectionState* injectionState = entry->injectionState; 2700 if (injectionState) { 2701 injectionState->pendingForegroundDispatches -= 1; 2702 2703 if (injectionState->pendingForegroundDispatches == 0) { 2704 mInjectionSyncFinishedCondition.broadcast(); 2705 } 2706 } 2707} 2708 2709const InputWindow* InputDispatcher::getWindowLocked(const sp<InputChannel>& inputChannel) { 2710 for (size_t i = 0; i < mWindows.size(); i++) { 2711 const InputWindow* window = & mWindows[i]; 2712 if (window->inputChannel == inputChannel) { 2713 return window; 2714 } 2715 } 2716 return NULL; 2717} 2718 2719void InputDispatcher::setInputWindows(const Vector<InputWindow>& inputWindows) { 2720#if DEBUG_FOCUS 2721 LOGD("setInputWindows"); 2722#endif 2723 { // acquire lock 2724 AutoMutex _l(mLock); 2725 2726 // Clear old window pointers. 2727 sp<InputChannel> oldFocusedWindowChannel; 2728 if (mFocusedWindow) { 2729 oldFocusedWindowChannel = mFocusedWindow->inputChannel; 2730 mFocusedWindow = NULL; 2731 } 2732 2733 mWindows.clear(); 2734 2735 // Loop over new windows and rebuild the necessary window pointers for 2736 // tracking focus and touch. 2737 mWindows.appendVector(inputWindows); 2738 2739 size_t numWindows = mWindows.size(); 2740 for (size_t i = 0; i < numWindows; i++) { 2741 const InputWindow* window = & mWindows.itemAt(i); 2742 if (window->hasFocus) { 2743 mFocusedWindow = window; 2744 break; 2745 } 2746 } 2747 2748 if (oldFocusedWindowChannel != NULL) { 2749 if (!mFocusedWindow || oldFocusedWindowChannel != mFocusedWindow->inputChannel) { 2750#if DEBUG_FOCUS 2751 LOGD("Focus left window: %s", 2752 oldFocusedWindowChannel->getName().string()); 2753#endif 2754 synthesizeCancelationEventsForInputChannelLocked(oldFocusedWindowChannel, 2755 InputState::CANCEL_NON_POINTER_EVENTS, "focus left window"); 2756 oldFocusedWindowChannel.clear(); 2757 } 2758 } 2759 if (mFocusedWindow && oldFocusedWindowChannel == NULL) { 2760#if DEBUG_FOCUS 2761 LOGD("Focus entered window: %s", 2762 mFocusedWindow->inputChannel->getName().string()); 2763#endif 2764 } 2765 2766 for (size_t i = 0; i < mTouchState.windows.size(); ) { 2767 TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i); 2768 const InputWindow* window = getWindowLocked(touchedWindow.channel); 2769 if (window) { 2770 touchedWindow.window = window; 2771 i += 1; 2772 } else { 2773#if DEBUG_FOCUS 2774 LOGD("Touched window was removed: %s", touchedWindow.channel->getName().string()); 2775#endif 2776 synthesizeCancelationEventsForInputChannelLocked(touchedWindow.channel, 2777 InputState::CANCEL_POINTER_EVENTS, "touched window was removed"); 2778 mTouchState.windows.removeAt(i); 2779 } 2780 } 2781 2782#if DEBUG_FOCUS 2783 //logDispatchStateLocked(); 2784#endif 2785 } // release lock 2786 2787 // Wake up poll loop since it may need to make new input dispatching choices. 2788 mLooper->wake(); 2789} 2790 2791void InputDispatcher::setFocusedApplication(const InputApplication* inputApplication) { 2792#if DEBUG_FOCUS 2793 LOGD("setFocusedApplication"); 2794#endif 2795 { // acquire lock 2796 AutoMutex _l(mLock); 2797 2798 releaseFocusedApplicationLocked(); 2799 2800 if (inputApplication) { 2801 mFocusedApplicationStorage = *inputApplication; 2802 mFocusedApplication = & mFocusedApplicationStorage; 2803 } 2804 2805#if DEBUG_FOCUS 2806 //logDispatchStateLocked(); 2807#endif 2808 } // release lock 2809 2810 // Wake up poll loop since it may need to make new input dispatching choices. 2811 mLooper->wake(); 2812} 2813 2814void InputDispatcher::releaseFocusedApplicationLocked() { 2815 if (mFocusedApplication) { 2816 mFocusedApplication = NULL; 2817 mFocusedApplicationStorage.inputApplicationHandle.clear(); 2818 } 2819} 2820 2821void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) { 2822#if DEBUG_FOCUS 2823 LOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen); 2824#endif 2825 2826 bool changed; 2827 { // acquire lock 2828 AutoMutex _l(mLock); 2829 2830 if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) { 2831 if (mDispatchFrozen && !frozen) { 2832 resetANRTimeoutsLocked(); 2833 } 2834 2835 if (mDispatchEnabled && !enabled) { 2836 resetAndDropEverythingLocked("dispatcher is being disabled"); 2837 } 2838 2839 mDispatchEnabled = enabled; 2840 mDispatchFrozen = frozen; 2841 changed = true; 2842 } else { 2843 changed = false; 2844 } 2845 2846#if DEBUG_FOCUS 2847 //logDispatchStateLocked(); 2848#endif 2849 } // release lock 2850 2851 if (changed) { 2852 // Wake up poll loop since it may need to make new input dispatching choices. 2853 mLooper->wake(); 2854 } 2855} 2856 2857bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel, 2858 const sp<InputChannel>& toChannel) { 2859#if DEBUG_FOCUS 2860 LOGD("transferTouchFocus: fromChannel=%s, toChannel=%s", 2861 fromChannel->getName().string(), toChannel->getName().string()); 2862#endif 2863 { // acquire lock 2864 AutoMutex _l(mLock); 2865 2866 const InputWindow* fromWindow = getWindowLocked(fromChannel); 2867 const InputWindow* toWindow = getWindowLocked(toChannel); 2868 if (! fromWindow || ! toWindow) { 2869#if DEBUG_FOCUS 2870 LOGD("Cannot transfer focus because from or to window not found."); 2871#endif 2872 return false; 2873 } 2874 if (fromWindow == toWindow) { 2875#if DEBUG_FOCUS 2876 LOGD("Trivial transfer to same window."); 2877#endif 2878 return true; 2879 } 2880 2881 bool found = false; 2882 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 2883 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 2884 if (touchedWindow.window == fromWindow) { 2885 int32_t oldTargetFlags = touchedWindow.targetFlags; 2886 BitSet32 pointerIds = touchedWindow.pointerIds; 2887 2888 mTouchState.windows.removeAt(i); 2889 2890 int32_t newTargetFlags = oldTargetFlags 2891 & (InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_SPLIT); 2892 mTouchState.addOrUpdateWindow(toWindow, newTargetFlags, pointerIds); 2893 2894 found = true; 2895 break; 2896 } 2897 } 2898 2899 if (! found) { 2900#if DEBUG_FOCUS 2901 LOGD("Focus transfer failed because from window did not have focus."); 2902#endif 2903 return false; 2904 } 2905 2906 ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel); 2907 ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel); 2908 if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) { 2909 sp<Connection> fromConnection = mConnectionsByReceiveFd.valueAt(fromConnectionIndex); 2910 sp<Connection> toConnection = mConnectionsByReceiveFd.valueAt(toConnectionIndex); 2911 2912 fromConnection->inputState.copyPointerStateTo(toConnection->inputState); 2913 synthesizeCancelationEventsForConnectionLocked(fromConnection, 2914 InputState::CANCEL_POINTER_EVENTS, 2915 "transferring touch focus from this window to another window"); 2916 } 2917 2918#if DEBUG_FOCUS 2919 logDispatchStateLocked(); 2920#endif 2921 } // release lock 2922 2923 // Wake up poll loop since it may need to make new input dispatching choices. 2924 mLooper->wake(); 2925 return true; 2926} 2927 2928void InputDispatcher::resetAndDropEverythingLocked(const char* reason) { 2929#if DEBUG_FOCUS 2930 LOGD("Resetting and dropping all events (%s).", reason); 2931#endif 2932 2933 synthesizeCancelationEventsForAllConnectionsLocked(InputState::CANCEL_ALL_EVENTS, reason); 2934 2935 resetKeyRepeatLocked(); 2936 releasePendingEventLocked(); 2937 drainInboundQueueLocked(); 2938 resetTargetsLocked(); 2939 2940 mTouchState.reset(); 2941} 2942 2943void InputDispatcher::logDispatchStateLocked() { 2944 String8 dump; 2945 dumpDispatchStateLocked(dump); 2946 2947 char* text = dump.lockBuffer(dump.size()); 2948 char* start = text; 2949 while (*start != '\0') { 2950 char* end = strchr(start, '\n'); 2951 if (*end == '\n') { 2952 *(end++) = '\0'; 2953 } 2954 LOGD("%s", start); 2955 start = end; 2956 } 2957} 2958 2959void InputDispatcher::dumpDispatchStateLocked(String8& dump) { 2960 dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled); 2961 dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen); 2962 2963 if (mFocusedApplication) { 2964 dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n", 2965 mFocusedApplication->name.string(), 2966 mFocusedApplication->dispatchingTimeout / 1000000.0); 2967 } else { 2968 dump.append(INDENT "FocusedApplication: <null>\n"); 2969 } 2970 dump.appendFormat(INDENT "FocusedWindow: name='%s'\n", 2971 mFocusedWindow != NULL ? mFocusedWindow->name.string() : "<null>"); 2972 2973 dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down)); 2974 dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split)); 2975 dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId); 2976 dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source); 2977 if (!mTouchState.windows.isEmpty()) { 2978 dump.append(INDENT "TouchedWindows:\n"); 2979 for (size_t i = 0; i < mTouchState.windows.size(); i++) { 2980 const TouchedWindow& touchedWindow = mTouchState.windows[i]; 2981 dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n", 2982 i, touchedWindow.window->name.string(), touchedWindow.pointerIds.value, 2983 touchedWindow.targetFlags); 2984 } 2985 } else { 2986 dump.append(INDENT "TouchedWindows: <none>\n"); 2987 } 2988 2989 if (!mWindows.isEmpty()) { 2990 dump.append(INDENT "Windows:\n"); 2991 for (size_t i = 0; i < mWindows.size(); i++) { 2992 const InputWindow& window = mWindows[i]; 2993 dump.appendFormat(INDENT2 "%d: name='%s', paused=%s, hasFocus=%s, hasWallpaper=%s, " 2994 "visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, " 2995 "frame=[%d,%d][%d,%d], scale=%f, " 2996 "touchableRegion=", 2997 i, window.name.string(), 2998 toString(window.paused), 2999 toString(window.hasFocus), 3000 toString(window.hasWallpaper), 3001 toString(window.visible), 3002 toString(window.canReceiveKeys), 3003 window.layoutParamsFlags, window.layoutParamsType, 3004 window.layer, 3005 window.frameLeft, window.frameTop, 3006 window.frameRight, window.frameBottom, 3007 window.scaleFactor); 3008 dumpRegion(dump, window.touchableRegion); 3009 dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n", 3010 window.ownerPid, window.ownerUid, 3011 window.dispatchingTimeout / 1000000.0); 3012 } 3013 } else { 3014 dump.append(INDENT "Windows: <none>\n"); 3015 } 3016 3017 if (!mMonitoringChannels.isEmpty()) { 3018 dump.append(INDENT "MonitoringChannels:\n"); 3019 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3020 const sp<InputChannel>& channel = mMonitoringChannels[i]; 3021 dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string()); 3022 } 3023 } else { 3024 dump.append(INDENT "MonitoringChannels: <none>\n"); 3025 } 3026 3027 dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count()); 3028 3029 if (!mActiveConnections.isEmpty()) { 3030 dump.append(INDENT "ActiveConnections:\n"); 3031 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3032 const Connection* connection = mActiveConnections[i]; 3033 dump.appendFormat(INDENT2 "%d: '%s', status=%s, outboundQueueLength=%u, " 3034 "inputState.isNeutral=%s\n", 3035 i, connection->getInputChannelName(), connection->getStatusLabel(), 3036 connection->outboundQueue.count(), 3037 toString(connection->inputState.isNeutral())); 3038 } 3039 } else { 3040 dump.append(INDENT "ActiveConnections: <none>\n"); 3041 } 3042 3043 if (isAppSwitchPendingLocked()) { 3044 dump.appendFormat(INDENT "AppSwitch: pending, due in %01.1fms\n", 3045 (mAppSwitchDueTime - now()) / 1000000.0); 3046 } else { 3047 dump.append(INDENT "AppSwitch: not pending\n"); 3048 } 3049} 3050 3051status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel, 3052 const sp<InputWindowHandle>& inputWindowHandle, bool monitor) { 3053#if DEBUG_REGISTRATION 3054 LOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(), 3055 toString(monitor)); 3056#endif 3057 3058 { // acquire lock 3059 AutoMutex _l(mLock); 3060 3061 if (getConnectionIndexLocked(inputChannel) >= 0) { 3062 LOGW("Attempted to register already registered input channel '%s'", 3063 inputChannel->getName().string()); 3064 return BAD_VALUE; 3065 } 3066 3067 sp<Connection> connection = new Connection(inputChannel, inputWindowHandle); 3068 status_t status = connection->initialize(); 3069 if (status) { 3070 LOGE("Failed to initialize input publisher for input channel '%s', status=%d", 3071 inputChannel->getName().string(), status); 3072 return status; 3073 } 3074 3075 int32_t receiveFd = inputChannel->getReceivePipeFd(); 3076 mConnectionsByReceiveFd.add(receiveFd, connection); 3077 3078 if (monitor) { 3079 mMonitoringChannels.push(inputChannel); 3080 } 3081 3082 mLooper->addFd(receiveFd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this); 3083 3084 runCommandsLockedInterruptible(); 3085 } // release lock 3086 return OK; 3087} 3088 3089status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) { 3090#if DEBUG_REGISTRATION 3091 LOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string()); 3092#endif 3093 3094 { // acquire lock 3095 AutoMutex _l(mLock); 3096 3097 ssize_t connectionIndex = getConnectionIndexLocked(inputChannel); 3098 if (connectionIndex < 0) { 3099 LOGW("Attempted to unregister already unregistered input channel '%s'", 3100 inputChannel->getName().string()); 3101 return BAD_VALUE; 3102 } 3103 3104 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3105 mConnectionsByReceiveFd.removeItemsAt(connectionIndex); 3106 3107 connection->status = Connection::STATUS_ZOMBIE; 3108 3109 for (size_t i = 0; i < mMonitoringChannels.size(); i++) { 3110 if (mMonitoringChannels[i] == inputChannel) { 3111 mMonitoringChannels.removeAt(i); 3112 break; 3113 } 3114 } 3115 3116 mLooper->removeFd(inputChannel->getReceivePipeFd()); 3117 3118 nsecs_t currentTime = now(); 3119 abortBrokenDispatchCycleLocked(currentTime, connection); 3120 3121 runCommandsLockedInterruptible(); 3122 } // release lock 3123 3124 // Wake the poll loop because removing the connection may have changed the current 3125 // synchronization state. 3126 mLooper->wake(); 3127 return OK; 3128} 3129 3130ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) { 3131 ssize_t connectionIndex = mConnectionsByReceiveFd.indexOfKey(inputChannel->getReceivePipeFd()); 3132 if (connectionIndex >= 0) { 3133 sp<Connection> connection = mConnectionsByReceiveFd.valueAt(connectionIndex); 3134 if (connection->inputChannel.get() == inputChannel.get()) { 3135 return connectionIndex; 3136 } 3137 } 3138 3139 return -1; 3140} 3141 3142void InputDispatcher::activateConnectionLocked(Connection* connection) { 3143 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3144 if (mActiveConnections.itemAt(i) == connection) { 3145 return; 3146 } 3147 } 3148 mActiveConnections.add(connection); 3149} 3150 3151void InputDispatcher::deactivateConnectionLocked(Connection* connection) { 3152 for (size_t i = 0; i < mActiveConnections.size(); i++) { 3153 if (mActiveConnections.itemAt(i) == connection) { 3154 mActiveConnections.removeAt(i); 3155 return; 3156 } 3157 } 3158} 3159 3160void InputDispatcher::onDispatchCycleStartedLocked( 3161 nsecs_t currentTime, const sp<Connection>& connection) { 3162} 3163 3164void InputDispatcher::onDispatchCycleFinishedLocked( 3165 nsecs_t currentTime, const sp<Connection>& connection, bool handled) { 3166 CommandEntry* commandEntry = postCommandLocked( 3167 & InputDispatcher::doDispatchCycleFinishedLockedInterruptible); 3168 commandEntry->connection = connection; 3169 commandEntry->handled = handled; 3170} 3171 3172void InputDispatcher::onDispatchCycleBrokenLocked( 3173 nsecs_t currentTime, const sp<Connection>& connection) { 3174 LOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!", 3175 connection->getInputChannelName()); 3176 3177 CommandEntry* commandEntry = postCommandLocked( 3178 & InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible); 3179 commandEntry->connection = connection; 3180} 3181 3182void InputDispatcher::onANRLocked( 3183 nsecs_t currentTime, const InputApplication* application, const InputWindow* window, 3184 nsecs_t eventTime, nsecs_t waitStartTime) { 3185 LOGI("Application is not responding: %s. " 3186 "%01.1fms since event, %01.1fms since wait started", 3187 getApplicationWindowLabelLocked(application, window).string(), 3188 (currentTime - eventTime) / 1000000.0, 3189 (currentTime - waitStartTime) / 1000000.0); 3190 3191 CommandEntry* commandEntry = postCommandLocked( 3192 & InputDispatcher::doNotifyANRLockedInterruptible); 3193 if (application) { 3194 commandEntry->inputApplicationHandle = application->inputApplicationHandle; 3195 } 3196 if (window) { 3197 commandEntry->inputWindowHandle = window->inputWindowHandle; 3198 commandEntry->inputChannel = window->inputChannel; 3199 } 3200} 3201 3202void InputDispatcher::doNotifyConfigurationChangedInterruptible( 3203 CommandEntry* commandEntry) { 3204 mLock.unlock(); 3205 3206 mPolicy->notifyConfigurationChanged(commandEntry->eventTime); 3207 3208 mLock.lock(); 3209} 3210 3211void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible( 3212 CommandEntry* commandEntry) { 3213 sp<Connection> connection = commandEntry->connection; 3214 3215 if (connection->status != Connection::STATUS_ZOMBIE) { 3216 mLock.unlock(); 3217 3218 mPolicy->notifyInputChannelBroken(connection->inputWindowHandle); 3219 3220 mLock.lock(); 3221 } 3222} 3223 3224void InputDispatcher::doNotifyANRLockedInterruptible( 3225 CommandEntry* commandEntry) { 3226 mLock.unlock(); 3227 3228 nsecs_t newTimeout = mPolicy->notifyANR( 3229 commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle); 3230 3231 mLock.lock(); 3232 3233 resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel); 3234} 3235 3236void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible( 3237 CommandEntry* commandEntry) { 3238 KeyEntry* entry = commandEntry->keyEntry; 3239 3240 KeyEvent event; 3241 initializeKeyEvent(&event, entry); 3242 3243 mLock.unlock(); 3244 3245 bool consumed = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle, 3246 &event, entry->policyFlags); 3247 3248 mLock.lock(); 3249 3250 entry->interceptKeyResult = consumed 3251 ? KeyEntry::INTERCEPT_KEY_RESULT_SKIP 3252 : KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE; 3253 mAllocator.releaseKeyEntry(entry); 3254} 3255 3256void InputDispatcher::doDispatchCycleFinishedLockedInterruptible( 3257 CommandEntry* commandEntry) { 3258 sp<Connection> connection = commandEntry->connection; 3259 bool handled = commandEntry->handled; 3260 3261 if (!connection->outboundQueue.isEmpty()) { 3262 DispatchEntry* dispatchEntry = connection->outboundQueue.headSentinel.next; 3263 if (dispatchEntry->inProgress 3264 && dispatchEntry->hasForegroundTarget() 3265 && dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) { 3266 KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry); 3267 if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) { 3268 if (handled) { 3269 // If the application handled a non-fallback key, then immediately 3270 // cancel all fallback keys previously dispatched to the application. 3271 // This behavior will prevent chording with fallback keys (so they cannot 3272 // be used as modifiers) but it will ensure that fallback keys do not 3273 // get stuck. This takes care of the case where the application does not handle 3274 // the original DOWN so we generate a fallback DOWN but it does handle 3275 // the original UP in which case we want to send a fallback CANCEL. 3276 synthesizeCancelationEventsForConnectionLocked(connection, 3277 InputState::CANCEL_FALLBACK_EVENTS, 3278 "application handled a non-fallback event, " 3279 "canceling all fallback events"); 3280 connection->originalKeyCodeForFallback = -1; 3281 } else { 3282 // If the application did not handle a non-fallback key, first check 3283 // that we are in a good state to handle the fallback key. Then ask 3284 // the policy what to do with it. 3285 if (connection->originalKeyCodeForFallback < 0) { 3286 if (keyEntry->action != AKEY_EVENT_ACTION_DOWN 3287 || keyEntry->repeatCount != 0) { 3288#if DEBUG_OUTBOUND_EVENT_DETAILS 3289 LOGD("Unhandled key event: Skipping fallback since this " 3290 "is not an initial down. " 3291 "keyCode=%d, action=%d, repeatCount=%d", 3292 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3293#endif 3294 goto SkipFallback; 3295 } 3296 3297 // Start handling the fallback key on DOWN. 3298 connection->originalKeyCodeForFallback = keyEntry->keyCode; 3299 } else { 3300 if (keyEntry->keyCode != connection->originalKeyCodeForFallback) { 3301#if DEBUG_OUTBOUND_EVENT_DETAILS 3302 LOGD("Unhandled key event: Skipping fallback since there is " 3303 "already a different fallback in progress. " 3304 "keyCode=%d, originalKeyCodeForFallback=%d", 3305 keyEntry->keyCode, connection->originalKeyCodeForFallback); 3306#endif 3307 goto SkipFallback; 3308 } 3309 3310 // Finish handling the fallback key on UP. 3311 if (keyEntry->action == AKEY_EVENT_ACTION_UP) { 3312 connection->originalKeyCodeForFallback = -1; 3313 } 3314 } 3315 3316#if DEBUG_OUTBOUND_EVENT_DETAILS 3317 LOGD("Unhandled key event: Asking policy to perform fallback action. " 3318 "keyCode=%d, action=%d, repeatCount=%d", 3319 keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount); 3320#endif 3321 KeyEvent event; 3322 initializeKeyEvent(&event, keyEntry); 3323 3324 mLock.unlock(); 3325 3326 bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle, 3327 &event, keyEntry->policyFlags, &event); 3328 3329 mLock.lock(); 3330 3331 if (connection->status != Connection::STATUS_NORMAL) { 3332 return; 3333 } 3334 3335 assert(connection->outboundQueue.headSentinel.next == dispatchEntry); 3336 3337 if (fallback) { 3338 // Restart the dispatch cycle using the fallback key. 3339 keyEntry->eventTime = event.getEventTime(); 3340 keyEntry->deviceId = event.getDeviceId(); 3341 keyEntry->source = event.getSource(); 3342 keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK; 3343 keyEntry->keyCode = event.getKeyCode(); 3344 keyEntry->scanCode = event.getScanCode(); 3345 keyEntry->metaState = event.getMetaState(); 3346 keyEntry->repeatCount = event.getRepeatCount(); 3347 keyEntry->downTime = event.getDownTime(); 3348 keyEntry->syntheticRepeat = false; 3349 3350#if DEBUG_OUTBOUND_EVENT_DETAILS 3351 LOGD("Unhandled key event: Dispatching fallback key. " 3352 "fallbackKeyCode=%d, fallbackMetaState=%08x", 3353 keyEntry->keyCode, keyEntry->metaState); 3354#endif 3355 3356 dispatchEntry->inProgress = false; 3357 startDispatchCycleLocked(now(), connection); 3358 return; 3359 } 3360 } 3361 } 3362 } 3363 } 3364 3365SkipFallback: 3366 startNextDispatchCycleLocked(now(), connection); 3367} 3368 3369void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) { 3370 mLock.unlock(); 3371 3372 mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType); 3373 3374 mLock.lock(); 3375} 3376 3377void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) { 3378 event->initialize(entry->deviceId, entry->source, entry->action, entry->flags, 3379 entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount, 3380 entry->downTime, entry->eventTime); 3381} 3382 3383void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry, 3384 int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) { 3385 // TODO Write some statistics about how long we spend waiting. 3386} 3387 3388void InputDispatcher::dump(String8& dump) { 3389 dump.append("Input Dispatcher State:\n"); 3390 dumpDispatchStateLocked(dump); 3391} 3392 3393 3394// --- InputDispatcher::Queue --- 3395 3396template <typename T> 3397uint32_t InputDispatcher::Queue<T>::count() const { 3398 uint32_t result = 0; 3399 for (const T* entry = headSentinel.next; entry != & tailSentinel; entry = entry->next) { 3400 result += 1; 3401 } 3402 return result; 3403} 3404 3405 3406// --- InputDispatcher::Allocator --- 3407 3408InputDispatcher::Allocator::Allocator() { 3409} 3410 3411InputDispatcher::InjectionState* 3412InputDispatcher::Allocator::obtainInjectionState(int32_t injectorPid, int32_t injectorUid) { 3413 InjectionState* injectionState = mInjectionStatePool.alloc(); 3414 injectionState->refCount = 1; 3415 injectionState->injectorPid = injectorPid; 3416 injectionState->injectorUid = injectorUid; 3417 injectionState->injectionIsAsync = false; 3418 injectionState->injectionResult = INPUT_EVENT_INJECTION_PENDING; 3419 injectionState->pendingForegroundDispatches = 0; 3420 return injectionState; 3421} 3422 3423void InputDispatcher::Allocator::initializeEventEntry(EventEntry* entry, int32_t type, 3424 nsecs_t eventTime, uint32_t policyFlags) { 3425 entry->type = type; 3426 entry->refCount = 1; 3427 entry->dispatchInProgress = false; 3428 entry->eventTime = eventTime; 3429 entry->policyFlags = policyFlags; 3430 entry->injectionState = NULL; 3431} 3432 3433void InputDispatcher::Allocator::releaseEventEntryInjectionState(EventEntry* entry) { 3434 if (entry->injectionState) { 3435 releaseInjectionState(entry->injectionState); 3436 entry->injectionState = NULL; 3437 } 3438} 3439 3440InputDispatcher::ConfigurationChangedEntry* 3441InputDispatcher::Allocator::obtainConfigurationChangedEntry(nsecs_t eventTime) { 3442 ConfigurationChangedEntry* entry = mConfigurationChangeEntryPool.alloc(); 3443 initializeEventEntry(entry, EventEntry::TYPE_CONFIGURATION_CHANGED, eventTime, 0); 3444 return entry; 3445} 3446 3447InputDispatcher::KeyEntry* InputDispatcher::Allocator::obtainKeyEntry(nsecs_t eventTime, 3448 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, 3449 int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState, 3450 int32_t repeatCount, nsecs_t downTime) { 3451 KeyEntry* entry = mKeyEntryPool.alloc(); 3452 initializeEventEntry(entry, EventEntry::TYPE_KEY, eventTime, policyFlags); 3453 3454 entry->deviceId = deviceId; 3455 entry->source = source; 3456 entry->action = action; 3457 entry->flags = flags; 3458 entry->keyCode = keyCode; 3459 entry->scanCode = scanCode; 3460 entry->metaState = metaState; 3461 entry->repeatCount = repeatCount; 3462 entry->downTime = downTime; 3463 entry->syntheticRepeat = false; 3464 entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3465 return entry; 3466} 3467 3468InputDispatcher::MotionEntry* InputDispatcher::Allocator::obtainMotionEntry(nsecs_t eventTime, 3469 int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags, 3470 int32_t metaState, int32_t edgeFlags, float xPrecision, float yPrecision, 3471 nsecs_t downTime, uint32_t pointerCount, 3472 const int32_t* pointerIds, const PointerCoords* pointerCoords) { 3473 MotionEntry* entry = mMotionEntryPool.alloc(); 3474 initializeEventEntry(entry, EventEntry::TYPE_MOTION, eventTime, policyFlags); 3475 3476 entry->eventTime = eventTime; 3477 entry->deviceId = deviceId; 3478 entry->source = source; 3479 entry->action = action; 3480 entry->flags = flags; 3481 entry->metaState = metaState; 3482 entry->edgeFlags = edgeFlags; 3483 entry->xPrecision = xPrecision; 3484 entry->yPrecision = yPrecision; 3485 entry->downTime = downTime; 3486 entry->pointerCount = pointerCount; 3487 entry->firstSample.eventTime = eventTime; 3488 entry->firstSample.next = NULL; 3489 entry->lastSample = & entry->firstSample; 3490 for (uint32_t i = 0; i < pointerCount; i++) { 3491 entry->pointerIds[i] = pointerIds[i]; 3492 entry->firstSample.pointerCoords[i] = pointerCoords[i]; 3493 } 3494 return entry; 3495} 3496 3497InputDispatcher::DispatchEntry* InputDispatcher::Allocator::obtainDispatchEntry( 3498 EventEntry* eventEntry, 3499 int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) { 3500 DispatchEntry* entry = mDispatchEntryPool.alloc(); 3501 entry->eventEntry = eventEntry; 3502 eventEntry->refCount += 1; 3503 entry->targetFlags = targetFlags; 3504 entry->xOffset = xOffset; 3505 entry->yOffset = yOffset; 3506 entry->scaleFactor = scaleFactor; 3507 entry->inProgress = false; 3508 entry->headMotionSample = NULL; 3509 entry->tailMotionSample = NULL; 3510 return entry; 3511} 3512 3513InputDispatcher::CommandEntry* InputDispatcher::Allocator::obtainCommandEntry(Command command) { 3514 CommandEntry* entry = mCommandEntryPool.alloc(); 3515 entry->command = command; 3516 return entry; 3517} 3518 3519void InputDispatcher::Allocator::releaseInjectionState(InjectionState* injectionState) { 3520 injectionState->refCount -= 1; 3521 if (injectionState->refCount == 0) { 3522 mInjectionStatePool.free(injectionState); 3523 } else { 3524 assert(injectionState->refCount > 0); 3525 } 3526} 3527 3528void InputDispatcher::Allocator::releaseEventEntry(EventEntry* entry) { 3529 switch (entry->type) { 3530 case EventEntry::TYPE_CONFIGURATION_CHANGED: 3531 releaseConfigurationChangedEntry(static_cast<ConfigurationChangedEntry*>(entry)); 3532 break; 3533 case EventEntry::TYPE_KEY: 3534 releaseKeyEntry(static_cast<KeyEntry*>(entry)); 3535 break; 3536 case EventEntry::TYPE_MOTION: 3537 releaseMotionEntry(static_cast<MotionEntry*>(entry)); 3538 break; 3539 default: 3540 assert(false); 3541 break; 3542 } 3543} 3544 3545void InputDispatcher::Allocator::releaseConfigurationChangedEntry( 3546 ConfigurationChangedEntry* entry) { 3547 entry->refCount -= 1; 3548 if (entry->refCount == 0) { 3549 releaseEventEntryInjectionState(entry); 3550 mConfigurationChangeEntryPool.free(entry); 3551 } else { 3552 assert(entry->refCount > 0); 3553 } 3554} 3555 3556void InputDispatcher::Allocator::releaseKeyEntry(KeyEntry* entry) { 3557 entry->refCount -= 1; 3558 if (entry->refCount == 0) { 3559 releaseEventEntryInjectionState(entry); 3560 mKeyEntryPool.free(entry); 3561 } else { 3562 assert(entry->refCount > 0); 3563 } 3564} 3565 3566void InputDispatcher::Allocator::releaseMotionEntry(MotionEntry* entry) { 3567 entry->refCount -= 1; 3568 if (entry->refCount == 0) { 3569 releaseEventEntryInjectionState(entry); 3570 for (MotionSample* sample = entry->firstSample.next; sample != NULL; ) { 3571 MotionSample* next = sample->next; 3572 mMotionSamplePool.free(sample); 3573 sample = next; 3574 } 3575 mMotionEntryPool.free(entry); 3576 } else { 3577 assert(entry->refCount > 0); 3578 } 3579} 3580 3581void InputDispatcher::Allocator::releaseDispatchEntry(DispatchEntry* entry) { 3582 releaseEventEntry(entry->eventEntry); 3583 mDispatchEntryPool.free(entry); 3584} 3585 3586void InputDispatcher::Allocator::releaseCommandEntry(CommandEntry* entry) { 3587 mCommandEntryPool.free(entry); 3588} 3589 3590void InputDispatcher::Allocator::appendMotionSample(MotionEntry* motionEntry, 3591 nsecs_t eventTime, const PointerCoords* pointerCoords) { 3592 MotionSample* sample = mMotionSamplePool.alloc(); 3593 sample->eventTime = eventTime; 3594 uint32_t pointerCount = motionEntry->pointerCount; 3595 for (uint32_t i = 0; i < pointerCount; i++) { 3596 sample->pointerCoords[i] = pointerCoords[i]; 3597 } 3598 3599 sample->next = NULL; 3600 motionEntry->lastSample->next = sample; 3601 motionEntry->lastSample = sample; 3602} 3603 3604void InputDispatcher::Allocator::recycleKeyEntry(KeyEntry* keyEntry) { 3605 releaseEventEntryInjectionState(keyEntry); 3606 3607 keyEntry->dispatchInProgress = false; 3608 keyEntry->syntheticRepeat = false; 3609 keyEntry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN; 3610} 3611 3612 3613// --- InputDispatcher::MotionEntry --- 3614 3615uint32_t InputDispatcher::MotionEntry::countSamples() const { 3616 uint32_t count = 1; 3617 for (MotionSample* sample = firstSample.next; sample != NULL; sample = sample->next) { 3618 count += 1; 3619 } 3620 return count; 3621} 3622 3623 3624// --- InputDispatcher::InputState --- 3625 3626InputDispatcher::InputState::InputState() { 3627} 3628 3629InputDispatcher::InputState::~InputState() { 3630} 3631 3632bool InputDispatcher::InputState::isNeutral() const { 3633 return mKeyMementos.isEmpty() && mMotionMementos.isEmpty(); 3634} 3635 3636void InputDispatcher::InputState::trackEvent( 3637 const EventEntry* entry) { 3638 switch (entry->type) { 3639 case EventEntry::TYPE_KEY: 3640 trackKey(static_cast<const KeyEntry*>(entry)); 3641 break; 3642 3643 case EventEntry::TYPE_MOTION: 3644 trackMotion(static_cast<const MotionEntry*>(entry)); 3645 break; 3646 } 3647} 3648 3649void InputDispatcher::InputState::trackKey( 3650 const KeyEntry* entry) { 3651 int32_t action = entry->action; 3652 for (size_t i = 0; i < mKeyMementos.size(); i++) { 3653 KeyMemento& memento = mKeyMementos.editItemAt(i); 3654 if (memento.deviceId == entry->deviceId 3655 && memento.source == entry->source 3656 && memento.keyCode == entry->keyCode 3657 && memento.scanCode == entry->scanCode) { 3658 switch (action) { 3659 case AKEY_EVENT_ACTION_UP: 3660 mKeyMementos.removeAt(i); 3661 return; 3662 3663 case AKEY_EVENT_ACTION_DOWN: 3664 mKeyMementos.removeAt(i); 3665 goto Found; 3666 3667 default: 3668 return; 3669 } 3670 } 3671 } 3672 3673Found: 3674 if (action == AKEY_EVENT_ACTION_DOWN) { 3675 mKeyMementos.push(); 3676 KeyMemento& memento = mKeyMementos.editTop(); 3677 memento.deviceId = entry->deviceId; 3678 memento.source = entry->source; 3679 memento.keyCode = entry->keyCode; 3680 memento.scanCode = entry->scanCode; 3681 memento.flags = entry->flags; 3682 memento.downTime = entry->downTime; 3683 } 3684} 3685 3686void InputDispatcher::InputState::trackMotion( 3687 const MotionEntry* entry) { 3688 int32_t action = entry->action & AMOTION_EVENT_ACTION_MASK; 3689 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3690 MotionMemento& memento = mMotionMementos.editItemAt(i); 3691 if (memento.deviceId == entry->deviceId 3692 && memento.source == entry->source) { 3693 switch (action) { 3694 case AMOTION_EVENT_ACTION_UP: 3695 case AMOTION_EVENT_ACTION_CANCEL: 3696 case AMOTION_EVENT_ACTION_HOVER_MOVE: 3697 mMotionMementos.removeAt(i); 3698 return; 3699 3700 case AMOTION_EVENT_ACTION_DOWN: 3701 mMotionMementos.removeAt(i); 3702 goto Found; 3703 3704 case AMOTION_EVENT_ACTION_POINTER_UP: 3705 case AMOTION_EVENT_ACTION_POINTER_DOWN: 3706 case AMOTION_EVENT_ACTION_MOVE: 3707 memento.setPointers(entry); 3708 return; 3709 3710 default: 3711 return; 3712 } 3713 } 3714 } 3715 3716Found: 3717 if (action == AMOTION_EVENT_ACTION_DOWN) { 3718 mMotionMementos.push(); 3719 MotionMemento& memento = mMotionMementos.editTop(); 3720 memento.deviceId = entry->deviceId; 3721 memento.source = entry->source; 3722 memento.xPrecision = entry->xPrecision; 3723 memento.yPrecision = entry->yPrecision; 3724 memento.downTime = entry->downTime; 3725 memento.setPointers(entry); 3726 } 3727} 3728 3729void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) { 3730 pointerCount = entry->pointerCount; 3731 for (uint32_t i = 0; i < entry->pointerCount; i++) { 3732 pointerIds[i] = entry->pointerIds[i]; 3733 pointerCoords[i] = entry->lastSample->pointerCoords[i]; 3734 } 3735} 3736 3737void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime, 3738 Allocator* allocator, Vector<EventEntry*>& outEvents, 3739 CancelationOptions options) { 3740 for (size_t i = 0; i < mKeyMementos.size(); ) { 3741 const KeyMemento& memento = mKeyMementos.itemAt(i); 3742 if (shouldCancelKey(memento, options)) { 3743 outEvents.push(allocator->obtainKeyEntry(currentTime, 3744 memento.deviceId, memento.source, 0, 3745 AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED, 3746 memento.keyCode, memento.scanCode, 0, 0, memento.downTime)); 3747 mKeyMementos.removeAt(i); 3748 } else { 3749 i += 1; 3750 } 3751 } 3752 3753 for (size_t i = 0; i < mMotionMementos.size(); ) { 3754 const MotionMemento& memento = mMotionMementos.itemAt(i); 3755 if (shouldCancelMotion(memento, options)) { 3756 outEvents.push(allocator->obtainMotionEntry(currentTime, 3757 memento.deviceId, memento.source, 0, 3758 AMOTION_EVENT_ACTION_CANCEL, 0, 0, 0, 3759 memento.xPrecision, memento.yPrecision, memento.downTime, 3760 memento.pointerCount, memento.pointerIds, memento.pointerCoords)); 3761 mMotionMementos.removeAt(i); 3762 } else { 3763 i += 1; 3764 } 3765 } 3766} 3767 3768void InputDispatcher::InputState::clear() { 3769 mKeyMementos.clear(); 3770 mMotionMementos.clear(); 3771} 3772 3773void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const { 3774 for (size_t i = 0; i < mMotionMementos.size(); i++) { 3775 const MotionMemento& memento = mMotionMementos.itemAt(i); 3776 if (memento.source & AINPUT_SOURCE_CLASS_POINTER) { 3777 for (size_t j = 0; j < other.mMotionMementos.size(); ) { 3778 const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j); 3779 if (memento.deviceId == otherMemento.deviceId 3780 && memento.source == otherMemento.source) { 3781 other.mMotionMementos.removeAt(j); 3782 } else { 3783 j += 1; 3784 } 3785 } 3786 other.mMotionMementos.push(memento); 3787 } 3788 } 3789} 3790 3791bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento, 3792 CancelationOptions options) { 3793 switch (options) { 3794 case CANCEL_ALL_EVENTS: 3795 case CANCEL_NON_POINTER_EVENTS: 3796 return true; 3797 case CANCEL_FALLBACK_EVENTS: 3798 return memento.flags & AKEY_EVENT_FLAG_FALLBACK; 3799 default: 3800 return false; 3801 } 3802} 3803 3804bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento, 3805 CancelationOptions options) { 3806 switch (options) { 3807 case CANCEL_ALL_EVENTS: 3808 return true; 3809 case CANCEL_POINTER_EVENTS: 3810 return memento.source & AINPUT_SOURCE_CLASS_POINTER; 3811 case CANCEL_NON_POINTER_EVENTS: 3812 return !(memento.source & AINPUT_SOURCE_CLASS_POINTER); 3813 default: 3814 return false; 3815 } 3816} 3817 3818 3819// --- InputDispatcher::Connection --- 3820 3821InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel, 3822 const sp<InputWindowHandle>& inputWindowHandle) : 3823 status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle), 3824 inputPublisher(inputChannel), 3825 lastEventTime(LONG_LONG_MAX), lastDispatchTime(LONG_LONG_MAX), 3826 originalKeyCodeForFallback(-1) { 3827} 3828 3829InputDispatcher::Connection::~Connection() { 3830} 3831 3832status_t InputDispatcher::Connection::initialize() { 3833 return inputPublisher.initialize(); 3834} 3835 3836const char* InputDispatcher::Connection::getStatusLabel() const { 3837 switch (status) { 3838 case STATUS_NORMAL: 3839 return "NORMAL"; 3840 3841 case STATUS_BROKEN: 3842 return "BROKEN"; 3843 3844 case STATUS_ZOMBIE: 3845 return "ZOMBIE"; 3846 3847 default: 3848 return "UNKNOWN"; 3849 } 3850} 3851 3852InputDispatcher::DispatchEntry* InputDispatcher::Connection::findQueuedDispatchEntryForEvent( 3853 const EventEntry* eventEntry) const { 3854 for (DispatchEntry* dispatchEntry = outboundQueue.tailSentinel.prev; 3855 dispatchEntry != & outboundQueue.headSentinel; dispatchEntry = dispatchEntry->prev) { 3856 if (dispatchEntry->eventEntry == eventEntry) { 3857 return dispatchEntry; 3858 } 3859 } 3860 return NULL; 3861} 3862 3863 3864// --- InputDispatcher::CommandEntry --- 3865 3866InputDispatcher::CommandEntry::CommandEntry() : 3867 keyEntry(NULL) { 3868} 3869 3870InputDispatcher::CommandEntry::~CommandEntry() { 3871} 3872 3873 3874// --- InputDispatcher::TouchState --- 3875 3876InputDispatcher::TouchState::TouchState() : 3877 down(false), split(false), deviceId(-1), source(0) { 3878} 3879 3880InputDispatcher::TouchState::~TouchState() { 3881} 3882 3883void InputDispatcher::TouchState::reset() { 3884 down = false; 3885 split = false; 3886 deviceId = -1; 3887 source = 0; 3888 windows.clear(); 3889} 3890 3891void InputDispatcher::TouchState::copyFrom(const TouchState& other) { 3892 down = other.down; 3893 split = other.split; 3894 deviceId = other.deviceId; 3895 source = other.source; 3896 windows.clear(); 3897 windows.appendVector(other.windows); 3898} 3899 3900void InputDispatcher::TouchState::addOrUpdateWindow(const InputWindow* window, 3901 int32_t targetFlags, BitSet32 pointerIds) { 3902 if (targetFlags & InputTarget::FLAG_SPLIT) { 3903 split = true; 3904 } 3905 3906 for (size_t i = 0; i < windows.size(); i++) { 3907 TouchedWindow& touchedWindow = windows.editItemAt(i); 3908 if (touchedWindow.window == window) { 3909 touchedWindow.targetFlags |= targetFlags; 3910 touchedWindow.pointerIds.value |= pointerIds.value; 3911 return; 3912 } 3913 } 3914 3915 windows.push(); 3916 3917 TouchedWindow& touchedWindow = windows.editTop(); 3918 touchedWindow.window = window; 3919 touchedWindow.targetFlags = targetFlags; 3920 touchedWindow.pointerIds = pointerIds; 3921 touchedWindow.channel = window->inputChannel; 3922} 3923 3924void InputDispatcher::TouchState::removeOutsideTouchWindows() { 3925 for (size_t i = 0 ; i < windows.size(); ) { 3926 if (windows[i].targetFlags & InputTarget::FLAG_OUTSIDE) { 3927 windows.removeAt(i); 3928 } else { 3929 i += 1; 3930 } 3931 } 3932} 3933 3934const InputWindow* InputDispatcher::TouchState::getFirstForegroundWindow() { 3935 for (size_t i = 0; i < windows.size(); i++) { 3936 if (windows[i].targetFlags & InputTarget::FLAG_FOREGROUND) { 3937 return windows[i].window; 3938 } 3939 } 3940 return NULL; 3941} 3942 3943 3944// --- InputDispatcherThread --- 3945 3946InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) : 3947 Thread(/*canCallJava*/ true), mDispatcher(dispatcher) { 3948} 3949 3950InputDispatcherThread::~InputDispatcherThread() { 3951} 3952 3953bool InputDispatcherThread::threadLoop() { 3954 mDispatcher->dispatchOnce(); 3955 return true; 3956} 3957 3958} // namespace android 3959