The Tor Browser: comparison widget/gonk/libui/InputDispatcher.cpp

--1:000000000000
+:8409756206f1
+/*
+* Copyright (C) 2010 The Android Open Source Project
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+#define LOG_TAG "InputDispatcher"
+#define ATRACE_TAG ATRACE_TAG_INPUT
+//#define LOG_NDEBUG 0
+#include "cutils_log.h"
+// Log detailed debug messages about each inbound event notification to the dispatcher.
+#define DEBUG_INBOUND_EVENT_DETAILS 0
+// Log detailed debug messages about each outbound event processed by the dispatcher.
+#define DEBUG_OUTBOUND_EVENT_DETAILS 0
+// Log debug messages about the dispatch cycle.
+#define DEBUG_DISPATCH_CYCLE 0
+// Log debug messages about registrations.
+#define DEBUG_REGISTRATION 0
+// Log debug messages about input event injection.
+#define DEBUG_INJECTION 0
+// Log debug messages about input focus tracking.
+#define DEBUG_FOCUS 0
+// Log debug messages about the app switch latency optimization.
+#define DEBUG_APP_SWITCH 0
+// Log debug messages about hover events.
+#define DEBUG_HOVER 0
+#include "InputDispatcher.h"
+#include "Trace.h"
+#include "PowerManager.h"
+#include <stddef.h>
+#include <unistd.h>
+#include <errno.h>
+#include <limits.h>
+#include <time.h>
+#define INDENT "  "
+#define INDENT2 "    "
+#define INDENT3 "      "
+#define INDENT4 "        "
+namespace android {
+// Default input dispatching timeout if there is no focused application or paused window
+// from which to determine an appropriate dispatching timeout.
+const nsecs_t DEFAULT_INPUT_DISPATCHING_TIMEOUT = 5000 * 1000000LL; // 5 sec
+// Amount of time to allow for all pending events to be processed when an app switch
+// key is on the way.  This is used to preempt input dispatch and drop input events
+// when an application takes too long to respond and the user has pressed an app switch key.
+const nsecs_t APP_SWITCH_TIMEOUT = 500 * 1000000LL; // 0.5sec
+// Amount of time to allow for an event to be dispatched (measured since its eventTime)
+// before considering it stale and dropping it.
+const nsecs_t STALE_EVENT_TIMEOUT = 10000 * 1000000LL; // 10sec
+// Amount of time to allow touch events to be streamed out to a connection before requiring
+// that the first event be finished.  This value extends the ANR timeout by the specified
+// amount.  For example, if streaming is allowed to get ahead by one second relative to the
+// queue of waiting unfinished events, then ANRs will similarly be delayed by one second.
+const nsecs_t STREAM_AHEAD_EVENT_TIMEOUT = 500 * 1000000LL; // 0.5sec
+// Log a warning when an event takes longer than this to process, even if an ANR does not occur.
+const nsecs_t SLOW_EVENT_PROCESSING_WARNING_TIMEOUT = 2000 * 1000000LL; // 2sec
+static inline nsecs_t now() {
+return systemTime(SYSTEM_TIME_MONOTONIC);
+}
+static inline const char* toString(bool value) {
+return value ? "true" : "false";
+}
+static inline int32_t getMotionEventActionPointerIndex(int32_t action) {
+return (action & AMOTION_EVENT_ACTION_POINTER_INDEX_MASK)
+>> AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT;
+}
+static bool isValidKeyAction(int32_t action) {
+switch (action) {
+case AKEY_EVENT_ACTION_DOWN:
+case AKEY_EVENT_ACTION_UP:
+return true;
+default:
+return false;
+}
+}
+static bool validateKeyEvent(int32_t action) {
+if (! isValidKeyAction(action)) {
+ALOGE("Key event has invalid action code 0x%x", action);
+return false;
+}
+return true;
+}
+static bool isValidMotionAction(int32_t action, size_t pointerCount) {
+switch (action & AMOTION_EVENT_ACTION_MASK) {
+case AMOTION_EVENT_ACTION_DOWN:
+case AMOTION_EVENT_ACTION_UP:
+case AMOTION_EVENT_ACTION_CANCEL:
+case AMOTION_EVENT_ACTION_MOVE:
+case AMOTION_EVENT_ACTION_OUTSIDE:
+case AMOTION_EVENT_ACTION_HOVER_ENTER:
+case AMOTION_EVENT_ACTION_HOVER_MOVE:
+case AMOTION_EVENT_ACTION_HOVER_EXIT:
+case AMOTION_EVENT_ACTION_SCROLL:
+return true;
+case AMOTION_EVENT_ACTION_POINTER_DOWN:
+case AMOTION_EVENT_ACTION_POINTER_UP: {
+int32_t index = getMotionEventActionPointerIndex(action);
+return index >= 0 && size_t(index) < pointerCount;
+}
+default:
+return false;
+}
+}
+static bool validateMotionEvent(int32_t action, size_t pointerCount,
+const PointerProperties* pointerProperties) {
+if (! isValidMotionAction(action, pointerCount)) {
+ALOGE("Motion event has invalid action code 0x%x", action);
+return false;
+}
+if (pointerCount < 1 || pointerCount > MAX_POINTERS) {
+ALOGE("Motion event has invalid pointer count %d; value must be between 1 and %d.",
+pointerCount, MAX_POINTERS);
+return false;
+}
+BitSet32 pointerIdBits;
+for (size_t i = 0; i < pointerCount; i++) {
+int32_t id = pointerProperties[i].id;
+if (id < 0 || id > MAX_POINTER_ID) {
+ALOGE("Motion event has invalid pointer id %d; value must be between 0 and %d",
+id, MAX_POINTER_ID);
+return false;
+}
+if (pointerIdBits.hasBit(id)) {
+ALOGE("Motion event has duplicate pointer id %d", id);
+return false;
+}
+pointerIdBits.markBit(id);
+}
+return true;
+}
+static bool isMainDisplay(int32_t displayId) {
+return displayId == ADISPLAY_ID_DEFAULT || displayId == ADISPLAY_ID_NONE;
+}
+static void dumpRegion(String8& dump, const SkRegion& region) {
+if (region.isEmpty()) {
+dump.append("<empty>");
+return;
+}
+bool first = true;
+for (SkRegion::Iterator it(region); !it.done(); it.next()) {
+if (first) {
+first = false;
+} else {
+dump.append("|");
+}
+const SkIRect& rect = it.rect();
+dump.appendFormat("[%d,%d][%d,%d]", rect.fLeft, rect.fTop, rect.fRight, rect.fBottom);
+}
+}
+// --- InputDispatcher ---
+InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy) :
+mPolicy(policy),
+mPendingEvent(NULL), mAppSwitchSawKeyDown(false), mAppSwitchDueTime(LONG_LONG_MAX),
+mNextUnblockedEvent(NULL),
+mDispatchEnabled(false), mDispatchFrozen(false), mInputFilterEnabled(false),
+mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
+mLooper = new Looper(false);
+mKeyRepeatState.lastKeyEntry = NULL;
+policy->getDispatcherConfiguration(&mConfig);
+}
+InputDispatcher::~InputDispatcher() {
+{ // acquire lock
+AutoMutex _l(mLock);
+resetKeyRepeatLocked();
+releasePendingEventLocked();
+drainInboundQueueLocked();
+}
+while (mConnectionsByFd.size() != 0) {
+unregisterInputChannel(mConnectionsByFd.valueAt(0)->inputChannel);
+}
+}
+void InputDispatcher::dispatchOnce() {
+nsecs_t nextWakeupTime = LONG_LONG_MAX;
+{ // acquire lock
+AutoMutex _l(mLock);
+mDispatcherIsAliveCondition.broadcast();
+// Run a dispatch loop if there are no pending commands.
+// The dispatch loop might enqueue commands to run afterwards.
+if (!haveCommandsLocked()) {
+dispatchOnceInnerLocked(&nextWakeupTime);
+}
+// Run all pending commands if there are any.
+// If any commands were run then force the next poll to wake up immediately.
+if (runCommandsLockedInterruptible()) {
+nextWakeupTime = LONG_LONG_MIN;
+}
+} // release lock
+// Wait for callback or timeout or wake.  (make sure we round up, not down)
+nsecs_t currentTime = now();
+int timeoutMillis = toMillisecondTimeoutDelay(currentTime, nextWakeupTime);
+mLooper->pollOnce(timeoutMillis);
+}
+void InputDispatcher::dispatchOnceInnerLocked(nsecs_t* nextWakeupTime) {
+nsecs_t currentTime = now();
+// Reset the key repeat timer whenever we disallow key events, even if the next event
+// is not a key.  This is to ensure that we abort a key repeat if the device is just coming
+// out of sleep.
+if (!mPolicy->isKeyRepeatEnabled()) {
+resetKeyRepeatLocked();
+}
+// If dispatching is frozen, do not process timeouts or try to deliver any new events.
+if (mDispatchFrozen) {
+#if DEBUG_FOCUS
+ALOGD("Dispatch frozen.  Waiting some more.");
+#endif
+return;
+}
+// Optimize latency of app switches.
+// Essentially we start a short timeout when an app switch key (HOME / ENDCALL) has
+// been pressed.  When it expires, we preempt dispatch and drop all other pending events.
+bool isAppSwitchDue = mAppSwitchDueTime <= currentTime;
+if (mAppSwitchDueTime < *nextWakeupTime) {
+*nextWakeupTime = mAppSwitchDueTime;
+}
+// Ready to start a new event.
+// If we don't already have a pending event, go grab one.
+if (! mPendingEvent) {
+if (mInboundQueue.isEmpty()) {
+if (isAppSwitchDue) {
+// The inbound queue is empty so the app switch key we were waiting
+// for will never arrive.  Stop waiting for it.
+resetPendingAppSwitchLocked(false);
+isAppSwitchDue = false;
+}
+// Synthesize a key repeat if appropriate.
+if (mKeyRepeatState.lastKeyEntry) {
+if (currentTime >= mKeyRepeatState.nextRepeatTime) {
+mPendingEvent = synthesizeKeyRepeatLocked(currentTime);
+} else {
+if (mKeyRepeatState.nextRepeatTime < *nextWakeupTime) {
+*nextWakeupTime = mKeyRepeatState.nextRepeatTime;
+}
+}
+}
+// Nothing to do if there is no pending event.
+if (!mPendingEvent) {
+return;
+}
+} else {
+// Inbound queue has at least one entry.
+mPendingEvent = mInboundQueue.dequeueAtHead();
+traceInboundQueueLengthLocked();
+}
+// Poke user activity for this event.
+if (mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER) {
+pokeUserActivityLocked(mPendingEvent);
+}
+// Get ready to dispatch the event.
+resetANRTimeoutsLocked();
+}
+// Now we have an event to dispatch.
+// All events are eventually dequeued and processed this way, even if we intend to drop them.
+ALOG_ASSERT(mPendingEvent != NULL);
+bool done = false;
+DropReason dropReason = DROP_REASON_NOT_DROPPED;
+if (!(mPendingEvent->policyFlags & POLICY_FLAG_PASS_TO_USER)) {
+dropReason = DROP_REASON_POLICY;
+} else if (!mDispatchEnabled) {
+dropReason = DROP_REASON_DISABLED;
+}
+if (mNextUnblockedEvent == mPendingEvent) {
+mNextUnblockedEvent = NULL;
+}
+switch (mPendingEvent->type) {
+case EventEntry::TYPE_CONFIGURATION_CHANGED: {
+ConfigurationChangedEntry* typedEntry =
+static_cast<ConfigurationChangedEntry*>(mPendingEvent);
+done = dispatchConfigurationChangedLocked(currentTime, typedEntry);
+dropReason = DROP_REASON_NOT_DROPPED; // configuration changes are never dropped
+break;
+}
+case EventEntry::TYPE_DEVICE_RESET: {
+DeviceResetEntry* typedEntry =
+static_cast<DeviceResetEntry*>(mPendingEvent);
+done = dispatchDeviceResetLocked(currentTime, typedEntry);
+dropReason = DROP_REASON_NOT_DROPPED; // device resets are never dropped
+break;
+}
+case EventEntry::TYPE_KEY: {
+KeyEntry* typedEntry = static_cast<KeyEntry*>(mPendingEvent);
+if (isAppSwitchDue) {
+if (isAppSwitchKeyEventLocked(typedEntry)) {
+resetPendingAppSwitchLocked(true);
+isAppSwitchDue = false;
+} else if (dropReason == DROP_REASON_NOT_DROPPED) {
+dropReason = DROP_REASON_APP_SWITCH;
+}
+}
+if (dropReason == DROP_REASON_NOT_DROPPED
+&& isStaleEventLocked(currentTime, typedEntry)) {
+dropReason = DROP_REASON_STALE;
+}
+if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) {
+dropReason = DROP_REASON_BLOCKED;
+}
+done = dispatchKeyLocked(currentTime, typedEntry, &dropReason, nextWakeupTime);
+break;
+}
+case EventEntry::TYPE_MOTION: {
+MotionEntry* typedEntry = static_cast<MotionEntry*>(mPendingEvent);
+if (dropReason == DROP_REASON_NOT_DROPPED && isAppSwitchDue) {
+dropReason = DROP_REASON_APP_SWITCH;
+}
+if (dropReason == DROP_REASON_NOT_DROPPED
+&& isStaleEventLocked(currentTime, typedEntry)) {
+dropReason = DROP_REASON_STALE;
+}
+if (dropReason == DROP_REASON_NOT_DROPPED && mNextUnblockedEvent) {
+dropReason = DROP_REASON_BLOCKED;
+}
+done = dispatchMotionLocked(currentTime, typedEntry,
+&dropReason, nextWakeupTime);
+break;
+}
+default:
+ALOG_ASSERT(false);
+break;
+}
+if (done) {
+if (dropReason != DROP_REASON_NOT_DROPPED) {
+dropInboundEventLocked(mPendingEvent, dropReason);
+}
+releasePendingEventLocked();
+*nextWakeupTime = LONG_LONG_MIN;  // force next poll to wake up immediately
+}
+}
+bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) {
+bool needWake = mInboundQueue.isEmpty();
+mInboundQueue.enqueueAtTail(entry);
+traceInboundQueueLengthLocked();
+switch (entry->type) {
+case EventEntry::TYPE_KEY: {
+// Optimize app switch latency.
+// If the application takes too long to catch up then we drop all events preceding
+// the app switch key.
+KeyEntry* keyEntry = static_cast<KeyEntry*>(entry);
+if (isAppSwitchKeyEventLocked(keyEntry)) {
+if (keyEntry->action == AKEY_EVENT_ACTION_DOWN) {
+mAppSwitchSawKeyDown = true;
+} else if (keyEntry->action == AKEY_EVENT_ACTION_UP) {
+if (mAppSwitchSawKeyDown) {
+#if DEBUG_APP_SWITCH
+ALOGD("App switch is pending!");
+#endif
+mAppSwitchDueTime = keyEntry->eventTime + APP_SWITCH_TIMEOUT;
+mAppSwitchSawKeyDown = false;
+needWake = true;
+}
+}
+}
+break;
+}
+case EventEntry::TYPE_MOTION: {
+// Optimize case where the current application is unresponsive and the user
+// decides to touch a window in a different application.
+// If the application takes too long to catch up then we drop all events preceding
+// the touch into the other window.
+MotionEntry* motionEntry = static_cast<MotionEntry*>(entry);
+if (motionEntry->action == AMOTION_EVENT_ACTION_DOWN
+&& (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
+&& mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY
+&& mInputTargetWaitApplicationHandle != NULL) {
+int32_t displayId = motionEntry->displayId;
+int32_t x = int32_t(motionEntry->pointerCoords[0].
+getAxisValue(AMOTION_EVENT_AXIS_X));
+int32_t y = int32_t(motionEntry->pointerCoords[0].
+getAxisValue(AMOTION_EVENT_AXIS_Y));
+sp<InputWindowHandle> touchedWindowHandle = findTouchedWindowAtLocked(displayId, x, y);
+if (touchedWindowHandle != NULL
+&& touchedWindowHandle->inputApplicationHandle
+!= mInputTargetWaitApplicationHandle) {
+// User touched a different application than the one we are waiting on.
+// Flag the event, and start pruning the input queue.
+mNextUnblockedEvent = motionEntry;
+needWake = true;
+}
+}
+break;
+}
+}
+return needWake;
+}
+sp<InputWindowHandle> InputDispatcher::findTouchedWindowAtLocked(int32_t displayId,
+int32_t x, int32_t y) {
+// Traverse windows from front to back to find touched window.
+size_t numWindows = mWindowHandles.size();
+for (size_t i = 0; i < numWindows; i++) {
+sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+const InputWindowInfo* windowInfo = windowHandle->getInfo();
+if (windowInfo->displayId == displayId) {
+int32_t flags = windowInfo->layoutParamsFlags;
+if (windowInfo->visible) {
+if (!(flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) {
+bool isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE
+| InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0;
+if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) {
+// Found window.
+return windowHandle;
+}
+}
+}
+if (flags & InputWindowInfo::FLAG_SYSTEM_ERROR) {
+// Error window is on top but not visible, so touch is dropped.
+return NULL;
+}
+}
+}
+return NULL;
+}
+void InputDispatcher::dropInboundEventLocked(EventEntry* entry, DropReason dropReason) {
+const char* reason;
+switch (dropReason) {
+case DROP_REASON_POLICY:
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("Dropped event because policy consumed it.");
+#endif
+reason = "inbound event was dropped because the policy consumed it";
+break;
+case DROP_REASON_DISABLED:
+ALOGI("Dropped event because input dispatch is disabled.");
+reason = "inbound event was dropped because input dispatch is disabled";
+break;
+case DROP_REASON_APP_SWITCH:
+ALOGI("Dropped event because of pending overdue app switch.");
+reason = "inbound event was dropped because of pending overdue app switch";
+break;
+case DROP_REASON_BLOCKED:
+ALOGI("Dropped event because the current application is not responding and the user "
+"has started interacting with a different application.");
+reason = "inbound event was dropped because the current application is not responding "
+"and the user has started interacting with a different application";
+break;
+case DROP_REASON_STALE:
+ALOGI("Dropped event because it is stale.");
+reason = "inbound event was dropped because it is stale";
+break;
+default:
+ALOG_ASSERT(false);
+return;
+}
+switch (entry->type) {
+case EventEntry::TYPE_KEY: {
+CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason);
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+break;
+}
+case EventEntry::TYPE_MOTION: {
+MotionEntry* motionEntry = static_cast<MotionEntry*>(entry);
+if (motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) {
+CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS, reason);
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+} else {
+CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS, reason);
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+}
+break;
+}
+}
+}
+bool InputDispatcher::isAppSwitchKeyCode(int32_t keyCode) {
+return keyCode == AKEYCODE_HOME
+|| keyCode == AKEYCODE_ENDCALL
+|| keyCode == AKEYCODE_APP_SWITCH;
+}
+bool InputDispatcher::isAppSwitchKeyEventLocked(KeyEntry* keyEntry) {
+return ! (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED)
+&& isAppSwitchKeyCode(keyEntry->keyCode)
+&& (keyEntry->policyFlags & POLICY_FLAG_TRUSTED)
+&& (keyEntry->policyFlags & POLICY_FLAG_PASS_TO_USER);
+}
+bool InputDispatcher::isAppSwitchPendingLocked() {
+return mAppSwitchDueTime != LONG_LONG_MAX;
+}
+void InputDispatcher::resetPendingAppSwitchLocked(bool handled) {
+mAppSwitchDueTime = LONG_LONG_MAX;
+#if DEBUG_APP_SWITCH
+if (handled) {
+ALOGD("App switch has arrived.");
+} else {
+ALOGD("App switch was abandoned.");
+}
+#endif
+}
+bool InputDispatcher::isStaleEventLocked(nsecs_t currentTime, EventEntry* entry) {
+return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT;
+}
+bool InputDispatcher::haveCommandsLocked() const {
+return !mCommandQueue.isEmpty();
+}
+bool InputDispatcher::runCommandsLockedInterruptible() {
+if (mCommandQueue.isEmpty()) {
+return false;
+}
+do {
+CommandEntry* commandEntry = mCommandQueue.dequeueAtHead();
+Command command = commandEntry->command;
+(this->*command)(commandEntry); // commands are implicitly 'LockedInterruptible'
+commandEntry->connection.clear();
+delete commandEntry;
+} while (! mCommandQueue.isEmpty());
+return true;
+}
+InputDispatcher::CommandEntry* InputDispatcher::postCommandLocked(Command command) {
+CommandEntry* commandEntry = new CommandEntry(command);
+mCommandQueue.enqueueAtTail(commandEntry);
+return commandEntry;
+}
+void InputDispatcher::drainInboundQueueLocked() {
+while (! mInboundQueue.isEmpty()) {
+EventEntry* entry = mInboundQueue.dequeueAtHead();
+releaseInboundEventLocked(entry);
+}
+traceInboundQueueLengthLocked();
+}
+void InputDispatcher::releasePendingEventLocked() {
+if (mPendingEvent) {
+resetANRTimeoutsLocked();
+releaseInboundEventLocked(mPendingEvent);
+mPendingEvent = NULL;
+}
+}
+void InputDispatcher::releaseInboundEventLocked(EventEntry* entry) {
+InjectionState* injectionState = entry->injectionState;
+if (injectionState && injectionState->injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("Injected inbound event was dropped.");
+#endif
+setInjectionResultLocked(entry, INPUT_EVENT_INJECTION_FAILED);
+}
+if (entry == mNextUnblockedEvent) {
+mNextUnblockedEvent = NULL;
+}
+entry->release();
+}
+void InputDispatcher::resetKeyRepeatLocked() {
+if (mKeyRepeatState.lastKeyEntry) {
+mKeyRepeatState.lastKeyEntry->release();
+mKeyRepeatState.lastKeyEntry = NULL;
+}
+}
+InputDispatcher::KeyEntry* InputDispatcher::synthesizeKeyRepeatLocked(nsecs_t currentTime) {
+KeyEntry* entry = mKeyRepeatState.lastKeyEntry;
+// Reuse the repeated key entry if it is otherwise unreferenced.
+uint32_t policyFlags = (entry->policyFlags & POLICY_FLAG_RAW_MASK)
+| POLICY_FLAG_PASS_TO_USER | POLICY_FLAG_TRUSTED;
+if (entry->refCount == 1) {
+entry->recycle();
+entry->eventTime = currentTime;
+entry->policyFlags = policyFlags;
+entry->repeatCount += 1;
+} else {
+KeyEntry* newEntry = new KeyEntry(currentTime,
+entry->deviceId, entry->source, policyFlags,
+entry->action, entry->flags, entry->keyCode, entry->scanCode,
+entry->metaState, entry->repeatCount + 1, entry->downTime);
+mKeyRepeatState.lastKeyEntry = newEntry;
+entry->release();
+entry = newEntry;
+}
+entry->syntheticRepeat = true;
+// Increment reference count since we keep a reference to the event in
+// mKeyRepeatState.lastKeyEntry in addition to the one we return.
+entry->refCount += 1;
+mKeyRepeatState.nextRepeatTime = currentTime + mConfig.keyRepeatDelay;
+return entry;
+}
+bool InputDispatcher::dispatchConfigurationChangedLocked(
+nsecs_t currentTime, ConfigurationChangedEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("dispatchConfigurationChanged - eventTime=%lld", entry->eventTime);
+#endif
+// Reset key repeating in case a keyboard device was added or removed or something.
+resetKeyRepeatLocked();
+// Enqueue a command to run outside the lock to tell the policy that the configuration changed.
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doNotifyConfigurationChangedInterruptible);
+commandEntry->eventTime = entry->eventTime;
+return true;
+}
+bool InputDispatcher::dispatchDeviceResetLocked(
+nsecs_t currentTime, DeviceResetEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("dispatchDeviceReset - eventTime=%lld, deviceId=%d", entry->eventTime, entry->deviceId);
+#endif
+CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS,
+"device was reset");
+options.deviceId = entry->deviceId;
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+return true;
+}
+bool InputDispatcher::dispatchKeyLocked(nsecs_t currentTime, KeyEntry* entry,
+DropReason* dropReason, nsecs_t* nextWakeupTime) {
+// Preprocessing.
+if (! entry->dispatchInProgress) {
+if (entry->repeatCount == 0
+&& entry->action == AKEY_EVENT_ACTION_DOWN
+&& (entry->policyFlags & POLICY_FLAG_TRUSTED)
+&& (!(entry->policyFlags & POLICY_FLAG_DISABLE_KEY_REPEAT))) {
+if (mKeyRepeatState.lastKeyEntry
+&& mKeyRepeatState.lastKeyEntry->keyCode == entry->keyCode) {
+// We have seen two identical key downs in a row which indicates that the device
+// driver is automatically generating key repeats itself.  We take note of the
+// repeat here, but we disable our own next key repeat timer since it is clear that
+// we will not need to synthesize key repeats ourselves.
+entry->repeatCount = mKeyRepeatState.lastKeyEntry->repeatCount + 1;
+resetKeyRepeatLocked();
+mKeyRepeatState.nextRepeatTime = LONG_LONG_MAX; // don't generate repeats ourselves
+} else {
+// Not a repeat.  Save key down state in case we do see a repeat later.
+resetKeyRepeatLocked();
+mKeyRepeatState.nextRepeatTime = entry->eventTime + mConfig.keyRepeatTimeout;
+}
+mKeyRepeatState.lastKeyEntry = entry;
+entry->refCount += 1;
+} else if (! entry->syntheticRepeat) {
+resetKeyRepeatLocked();
+}
+if (entry->repeatCount == 1) {
+entry->flags |= AKEY_EVENT_FLAG_LONG_PRESS;
+} else {
+entry->flags &= ~AKEY_EVENT_FLAG_LONG_PRESS;
+}
+entry->dispatchInProgress = true;
+logOutboundKeyDetailsLocked("dispatchKey - ", entry);
+}
+// Handle case where the policy asked us to try again later last time.
+if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER) {
+if (currentTime < entry->interceptKeyWakeupTime) {
+if (entry->interceptKeyWakeupTime < *nextWakeupTime) {
+*nextWakeupTime = entry->interceptKeyWakeupTime;
+}
+return false; // wait until next wakeup
+}
+entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN;
+entry->interceptKeyWakeupTime = 0;
+}
+// Give the policy a chance to intercept the key.
+if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN) {
+if (entry->policyFlags & POLICY_FLAG_PASS_TO_USER) {
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible);
+if (mFocusedWindowHandle != NULL) {
+commandEntry->inputWindowHandle = mFocusedWindowHandle;
+}
+commandEntry->keyEntry = entry;
+entry->refCount += 1;
+return false; // wait for the command to run
+} else {
+entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE;
+}
+} else if (entry->interceptKeyResult == KeyEntry::INTERCEPT_KEY_RESULT_SKIP) {
+if (*dropReason == DROP_REASON_NOT_DROPPED) {
+*dropReason = DROP_REASON_POLICY;
+}
+}
+// Clean up if dropping the event.
+if (*dropReason != DROP_REASON_NOT_DROPPED) {
+setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY
+? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED);
+return true;
+}
+// Identify targets.
+Vector<InputTarget> inputTargets;
+int32_t injectionResult = findFocusedWindowTargetsLocked(currentTime,
+entry, inputTargets, nextWakeupTime);
+if (injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+return false;
+}
+setInjectionResultLocked(entry, injectionResult);
+if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+return true;
+}
+addMonitoringTargetsLocked(inputTargets);
+// Dispatch the key.
+dispatchEventLocked(currentTime, entry, inputTargets);
+return true;
+}
+void InputDispatcher::logOutboundKeyDetailsLocked(const char* prefix, const KeyEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+"action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, "
+"repeatCount=%d, downTime=%lld",
+prefix,
+entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+entry->action, entry->flags, entry->keyCode, entry->scanCode, entry->metaState,
+entry->repeatCount, entry->downTime);
+#endif
+}
+bool InputDispatcher::dispatchMotionLocked(
+nsecs_t currentTime, MotionEntry* entry, DropReason* dropReason, nsecs_t* nextWakeupTime) {
+// Preprocessing.
+if (! entry->dispatchInProgress) {
+entry->dispatchInProgress = true;
+logOutboundMotionDetailsLocked("dispatchMotion - ", entry);
+}
+// Clean up if dropping the event.
+if (*dropReason != DROP_REASON_NOT_DROPPED) {
+setInjectionResultLocked(entry, *dropReason == DROP_REASON_POLICY
+? INPUT_EVENT_INJECTION_SUCCEEDED : INPUT_EVENT_INJECTION_FAILED);
+return true;
+}
+bool isPointerEvent = entry->source & AINPUT_SOURCE_CLASS_POINTER;
+// Identify targets.
+Vector<InputTarget> inputTargets;
+bool conflictingPointerActions = false;
+int32_t injectionResult;
+if (isPointerEvent) {
+// Pointer event.  (eg. touchscreen)
+injectionResult = findTouchedWindowTargetsLocked(currentTime,
+entry, inputTargets, nextWakeupTime, &conflictingPointerActions);
+} else {
+// Non touch event.  (eg. trackball)
+injectionResult = findFocusedWindowTargetsLocked(currentTime,
+entry, inputTargets, nextWakeupTime);
+}
+if (injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+return false;
+}
+setInjectionResultLocked(entry, injectionResult);
+if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+return true;
+}
+// TODO: support sending secondary display events to input monitors
+if (isMainDisplay(entry->displayId)) {
+addMonitoringTargetsLocked(inputTargets);
+}
+// Dispatch the motion.
+if (conflictingPointerActions) {
+CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+"conflicting pointer actions");
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+}
+dispatchEventLocked(currentTime, entry, inputTargets);
+return true;
+}
+void InputDispatcher::logOutboundMotionDetailsLocked(const char* prefix, const MotionEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("%seventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+"action=0x%x, flags=0x%x, "
+"metaState=0x%x, buttonState=0x%x, "
+"edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%lld",
+prefix,
+entry->eventTime, entry->deviceId, entry->source, entry->policyFlags,
+entry->action, entry->flags,
+entry->metaState, entry->buttonState,
+entry->edgeFlags, entry->xPrecision, entry->yPrecision,
+entry->downTime);
+for (uint32_t i = 0; i < entry->pointerCount; i++) {
+ALOGD("  Pointer %d: id=%d, toolType=%d, "
+"x=%f, y=%f, pressure=%f, size=%f, "
+"touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, "
+"orientation=%f",
+i, entry->pointerProperties[i].id,
+entry->pointerProperties[i].toolType,
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR),
+entry->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION));
+}
+#endif
+}
+void InputDispatcher::dispatchEventLocked(nsecs_t currentTime,
+EventEntry* eventEntry, const Vector<InputTarget>& inputTargets) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("dispatchEventToCurrentInputTargets");
+#endif
+ALOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true
+pokeUserActivityLocked(eventEntry);
+for (size_t i = 0; i < inputTargets.size(); i++) {
+const InputTarget& inputTarget = inputTargets.itemAt(i);
+ssize_t connectionIndex = getConnectionIndexLocked(inputTarget.inputChannel);
+if (connectionIndex >= 0) {
+sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+prepareDispatchCycleLocked(currentTime, connection, eventEntry, &inputTarget);
+} else {
+#if DEBUG_FOCUS
+ALOGD("Dropping event delivery to target with channel '%s' because it "
+"is no longer registered with the input dispatcher.",
+inputTarget.inputChannel->getName().string());
+#endif
+}
+}
+}
+int32_t InputDispatcher::handleTargetsNotReadyLocked(nsecs_t currentTime,
+const EventEntry* entry,
+const sp<InputApplicationHandle>& applicationHandle,
+const sp<InputWindowHandle>& windowHandle,
+nsecs_t* nextWakeupTime, const char* reason) {
+if (applicationHandle == NULL && windowHandle == NULL) {
+if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY) {
+#if DEBUG_FOCUS
+ALOGD("Waiting for system to become ready for input.  Reason: %s", reason);
+#endif
+mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_SYSTEM_NOT_READY;
+mInputTargetWaitStartTime = currentTime;
+mInputTargetWaitTimeoutTime = LONG_LONG_MAX;
+mInputTargetWaitTimeoutExpired = false;
+mInputTargetWaitApplicationHandle.clear();
+}
+} else {
+if (mInputTargetWaitCause != INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) {
+#if DEBUG_FOCUS
+ALOGD("Waiting for application to become ready for input: %s.  Reason: %s",
+getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(),
+reason);
+#endif
+nsecs_t timeout;
+if (windowHandle != NULL) {
+timeout = windowHandle->getDispatchingTimeout(DEFAULT_INPUT_DISPATCHING_TIMEOUT);
+} else if (applicationHandle != NULL) {
+timeout = applicationHandle->getDispatchingTimeout(
+DEFAULT_INPUT_DISPATCHING_TIMEOUT);
+} else {
+timeout = DEFAULT_INPUT_DISPATCHING_TIMEOUT;
+}
+mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY;
+mInputTargetWaitStartTime = currentTime;
+mInputTargetWaitTimeoutTime = currentTime + timeout;
+mInputTargetWaitTimeoutExpired = false;
+mInputTargetWaitApplicationHandle.clear();
+if (windowHandle != NULL) {
+mInputTargetWaitApplicationHandle = windowHandle->inputApplicationHandle;
+}
+if (mInputTargetWaitApplicationHandle == NULL && applicationHandle != NULL) {
+mInputTargetWaitApplicationHandle = applicationHandle;
+}
+}
+}
+if (mInputTargetWaitTimeoutExpired) {
+return INPUT_EVENT_INJECTION_TIMED_OUT;
+}
+if (currentTime >= mInputTargetWaitTimeoutTime) {
+onANRLocked(currentTime, applicationHandle, windowHandle,
+entry->eventTime, mInputTargetWaitStartTime, reason);
+// Force poll loop to wake up immediately on next iteration once we get the
+// ANR response back from the policy.
+*nextWakeupTime = LONG_LONG_MIN;
+return INPUT_EVENT_INJECTION_PENDING;
+} else {
+// Force poll loop to wake up when timeout is due.
+if (mInputTargetWaitTimeoutTime < *nextWakeupTime) {
+*nextWakeupTime = mInputTargetWaitTimeoutTime;
+}
+return INPUT_EVENT_INJECTION_PENDING;
+}
+}
+void InputDispatcher::resumeAfterTargetsNotReadyTimeoutLocked(nsecs_t newTimeout,
+const sp<InputChannel>& inputChannel) {
+if (newTimeout > 0) {
+// Extend the timeout.
+mInputTargetWaitTimeoutTime = now() + newTimeout;
+} else {
+// Give up.
+mInputTargetWaitTimeoutExpired = true;
+// Input state will not be realistic.  Mark it out of sync.
+if (inputChannel.get()) {
+ssize_t connectionIndex = getConnectionIndexLocked(inputChannel);
+if (connectionIndex >= 0) {
+sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+sp<InputWindowHandle> windowHandle = connection->inputWindowHandle;
+if (windowHandle != NULL) {
+mTouchState.removeWindow(windowHandle);
+}
+if (connection->status == Connection::STATUS_NORMAL) {
+CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS,
+"application not responding");
+synthesizeCancelationEventsForConnectionLocked(connection, options);
+}
+}
+}
+}
+}
+nsecs_t InputDispatcher::getTimeSpentWaitingForApplicationLocked(
+nsecs_t currentTime) {
+if (mInputTargetWaitCause == INPUT_TARGET_WAIT_CAUSE_APPLICATION_NOT_READY) {
+return currentTime - mInputTargetWaitStartTime;
+}
+return 0;
+}
+void InputDispatcher::resetANRTimeoutsLocked() {
+#if DEBUG_FOCUS
+ALOGD("Resetting ANR timeouts.");
+#endif
+// Reset input target wait timeout.
+mInputTargetWaitCause = INPUT_TARGET_WAIT_CAUSE_NONE;
+mInputTargetWaitApplicationHandle.clear();
+}
+int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime,
+const EventEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime) {
+int32_t injectionResult;
+// If there is no currently focused window and no focused application
+// then drop the event.
+if (mFocusedWindowHandle == NULL) {
+if (mFocusedApplicationHandle != NULL) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+mFocusedApplicationHandle, NULL, nextWakeupTime,
+"Waiting because no window has focus but there is a "
+"focused application that may eventually add a window "
+"when it finishes starting up.");
+goto Unresponsive;
+}
+ALOGI("Dropping event because there is no focused window or focused application.");
+injectionResult = INPUT_EVENT_INJECTION_FAILED;
+goto Failed;
+}
+// Check permissions.
+if (! checkInjectionPermission(mFocusedWindowHandle, entry->injectionState)) {
+injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+goto Failed;
+}
+// If the currently focused window is paused then keep waiting.
+if (mFocusedWindowHandle->getInfo()->paused) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime,
+"Waiting because the focused window is paused.");
+goto Unresponsive;
+}
+// If the currently focused window is still working on previous events then keep waiting.
+if (!isWindowReadyForMoreInputLocked(currentTime, mFocusedWindowHandle, entry)) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+mFocusedApplicationHandle, mFocusedWindowHandle, nextWakeupTime,
+"Waiting because the focused window has not finished "
+"processing the input events that were previously delivered to it.");
+goto Unresponsive;
+}
+// Success!  Output targets.
+injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+addWindowTargetLocked(mFocusedWindowHandle,
+InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS, BitSet32(0),
+inputTargets);
+// Done.
+Failed:
+Unresponsive:
+nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime);
+updateDispatchStatisticsLocked(currentTime, entry,
+injectionResult, timeSpentWaitingForApplication);
+#if DEBUG_FOCUS
+ALOGD("findFocusedWindow finished: injectionResult=%d, "
+"timeSpentWaitingForApplication=%0.1fms",
+injectionResult, timeSpentWaitingForApplication / 1000000.0);
+#endif
+return injectionResult;
+}
+int32_t InputDispatcher::findTouchedWindowTargetsLocked(nsecs_t currentTime,
+const MotionEntry* entry, Vector<InputTarget>& inputTargets, nsecs_t* nextWakeupTime,
+bool* outConflictingPointerActions) {
+enum InjectionPermission {
+INJECTION_PERMISSION_UNKNOWN,
+INJECTION_PERMISSION_GRANTED,
+INJECTION_PERMISSION_DENIED
+};
+nsecs_t startTime = now();
+// For security reasons, we defer updating the touch state until we are sure that
+// event injection will be allowed.
+//
+// FIXME In the original code, screenWasOff could never be set to true.
+//       The reason is that the POLICY_FLAG_WOKE_HERE
+//       and POLICY_FLAG_BRIGHT_HERE flags were set only when preprocessing raw
+//       EV_KEY, EV_REL and EV_ABS events.  As it happens, the touch event was
+//       actually enqueued using the policyFlags that appeared in the final EV_SYN
+//       events upon which no preprocessing took place.  So policyFlags was always 0.
+//       In the new native input dispatcher we're a bit more careful about event
+//       preprocessing so the touches we receive can actually have non-zero policyFlags.
+//       Unfortunately we obtain undesirable behavior.
+//
+//       Here's what happens:
+//
+//       When the device dims in anticipation of going to sleep, touches
+//       in windows which have FLAG_TOUCHABLE_WHEN_WAKING cause
+//       the device to brighten and reset the user activity timer.
+//       Touches on other windows (such as the launcher window)
+//       are dropped.  Then after a moment, the device goes to sleep.  Oops.
+//
+//       Also notice how screenWasOff was being initialized using POLICY_FLAG_BRIGHT_HERE
+//       instead of POLICY_FLAG_WOKE_HERE...
+//
+bool screenWasOff = false; // original policy: policyFlags & POLICY_FLAG_BRIGHT_HERE;
+int32_t displayId = entry->displayId;
+int32_t action = entry->action;
+int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK;
+// Update the touch state as needed based on the properties of the touch event.
+int32_t injectionResult = INPUT_EVENT_INJECTION_PENDING;
+InjectionPermission injectionPermission = INJECTION_PERMISSION_UNKNOWN;
+sp<InputWindowHandle> newHoverWindowHandle;
+bool isSplit = mTouchState.split;
+bool switchedDevice = mTouchState.deviceId >= 0 && mTouchState.displayId >= 0
+&& (mTouchState.deviceId != entry->deviceId
+|| mTouchState.source != entry->source
+|| mTouchState.displayId != displayId);
+bool isHoverAction = (maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE
+|| maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER
+|| maskedAction == AMOTION_EVENT_ACTION_HOVER_EXIT);
+bool newGesture = (maskedAction == AMOTION_EVENT_ACTION_DOWN
+|| maskedAction == AMOTION_EVENT_ACTION_SCROLL
+|| isHoverAction);
+bool wrongDevice = false;
+if (newGesture) {
+bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN;
+if (switchedDevice && mTouchState.down && !down) {
+#if DEBUG_FOCUS
+ALOGD("Dropping event because a pointer for a different device is already down.");
+#endif
+mTempTouchState.copyFrom(mTouchState);
+injectionResult = INPUT_EVENT_INJECTION_FAILED;
+switchedDevice = false;
+wrongDevice = true;
+goto Failed;
+}
+mTempTouchState.reset();
+mTempTouchState.down = down;
+mTempTouchState.deviceId = entry->deviceId;
+mTempTouchState.source = entry->source;
+mTempTouchState.displayId = displayId;
+isSplit = false;
+} else {
+mTempTouchState.copyFrom(mTouchState);
+}
+if (newGesture || (isSplit && maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN)) {
+/* Case 1: New splittable pointer going down, or need target for hover or scroll. */
+int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+int32_t x = int32_t(entry->pointerCoords[pointerIndex].
+getAxisValue(AMOTION_EVENT_AXIS_X));
+int32_t y = int32_t(entry->pointerCoords[pointerIndex].
+getAxisValue(AMOTION_EVENT_AXIS_Y));
+sp<InputWindowHandle> newTouchedWindowHandle;
+sp<InputWindowHandle> topErrorWindowHandle;
+bool isTouchModal = false;
+// Traverse windows from front to back to find touched window and outside targets.
+size_t numWindows = mWindowHandles.size();
+for (size_t i = 0; i < numWindows; i++) {
+sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+const InputWindowInfo* windowInfo = windowHandle->getInfo();
+if (windowInfo->displayId != displayId) {
+continue; // wrong display
+}
+int32_t flags = windowInfo->layoutParamsFlags;
+if (flags & InputWindowInfo::FLAG_SYSTEM_ERROR) {
+if (topErrorWindowHandle == NULL) {
+topErrorWindowHandle = windowHandle;
+}
+}
+if (windowInfo->visible) {
+if (! (flags & InputWindowInfo::FLAG_NOT_TOUCHABLE)) {
+isTouchModal = (flags & (InputWindowInfo::FLAG_NOT_FOCUSABLE
+| InputWindowInfo::FLAG_NOT_TOUCH_MODAL)) == 0;
+if (isTouchModal || windowInfo->touchableRegionContainsPoint(x, y)) {
+if (! screenWasOff
+|| (flags & InputWindowInfo::FLAG_TOUCHABLE_WHEN_WAKING)) {
+newTouchedWindowHandle = windowHandle;
+}
+break; // found touched window, exit window loop
+}
+}
+if (maskedAction == AMOTION_EVENT_ACTION_DOWN
+&& (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
+int32_t outsideTargetFlags = InputTarget::FLAG_DISPATCH_AS_OUTSIDE;
+if (isWindowObscuredAtPointLocked(windowHandle, x, y)) {
+outsideTargetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+}
+mTempTouchState.addOrUpdateWindow(
+windowHandle, outsideTargetFlags, BitSet32(0));
+}
+}
+}
+// If there is an error window but it is not taking focus (typically because
+// it is invisible) then wait for it.  Any other focused window may in
+// fact be in ANR state.
+if (topErrorWindowHandle != NULL && newTouchedWindowHandle != topErrorWindowHandle) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+NULL, NULL, nextWakeupTime,
+"Waiting because a system error window is about to be displayed.");
+injectionPermission = INJECTION_PERMISSION_UNKNOWN;
+goto Unresponsive;
+}
+// Figure out whether splitting will be allowed for this window.
+if (newTouchedWindowHandle != NULL
+&& newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
+// New window supports splitting.
+isSplit = true;
+} else if (isSplit) {
+// New window does not support splitting but we have already split events.
+// Ignore the new window.
+newTouchedWindowHandle = NULL;
+}
+// Handle the case where we did not find a window.
+if (newTouchedWindowHandle == NULL) {
+// Try to assign the pointer to the first foreground window we find, if there is one.
+newTouchedWindowHandle = mTempTouchState.getFirstForegroundWindowHandle();
+if (newTouchedWindowHandle == NULL) {
+// There is no touched window.  If this is an initial down event
+// then wait for a window to appear that will handle the touch.  This is
+// to ensure that we report an ANR in the case where an application has started
+// but not yet put up a window and the user is starting to get impatient.
+if (maskedAction == AMOTION_EVENT_ACTION_DOWN
+&& mFocusedApplicationHandle != NULL) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+mFocusedApplicationHandle, NULL, nextWakeupTime,
+"Waiting because there is no touchable window that can "
+"handle the event but there is focused application that may "
+"eventually add a new window when it finishes starting up.");
+goto Unresponsive;
+}
+ALOGI("Dropping event because there is no touched window.");
+injectionResult = INPUT_EVENT_INJECTION_FAILED;
+goto Failed;
+}
+}
+// Set target flags.
+int32_t targetFlags = InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS;
+if (isSplit) {
+targetFlags |= InputTarget::FLAG_SPLIT;
+}
+if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) {
+targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+}
+// Update hover state.
+if (isHoverAction) {
+newHoverWindowHandle = newTouchedWindowHandle;
+} else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) {
+newHoverWindowHandle = mLastHoverWindowHandle;
+}
+// Update the temporary touch state.
+BitSet32 pointerIds;
+if (isSplit) {
+uint32_t pointerId = entry->pointerProperties[pointerIndex].id;
+pointerIds.markBit(pointerId);
+}
+mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
+} else {
+/* Case 2: Pointer move, up, cancel or non-splittable pointer down. */
+// If the pointer is not currently down, then ignore the event.
+if (! mTempTouchState.down) {
+#if DEBUG_FOCUS
+ALOGD("Dropping event because the pointer is not down or we previously "
+"dropped the pointer down event.");
+#endif
+injectionResult = INPUT_EVENT_INJECTION_FAILED;
+goto Failed;
+}
+// Check whether touches should slip outside of the current foreground window.
+if (maskedAction == AMOTION_EVENT_ACTION_MOVE
+&& entry->pointerCount == 1
+&& mTempTouchState.isSlippery()) {
+int32_t x = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_X));
+int32_t y = int32_t(entry->pointerCoords[0].getAxisValue(AMOTION_EVENT_AXIS_Y));
+sp<InputWindowHandle> oldTouchedWindowHandle =
+mTempTouchState.getFirstForegroundWindowHandle();
+sp<InputWindowHandle> newTouchedWindowHandle =
+findTouchedWindowAtLocked(displayId, x, y);
+if (oldTouchedWindowHandle != newTouchedWindowHandle
+&& newTouchedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+ALOGD("Touch is slipping out of window %s into window %s.",
+oldTouchedWindowHandle->getName().string(),
+newTouchedWindowHandle->getName().string());
+#endif
+// Make a slippery exit from the old window.
+mTempTouchState.addOrUpdateWindow(oldTouchedWindowHandle,
+InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT, BitSet32(0));
+// Make a slippery entrance into the new window.
+if (newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
+isSplit = true;
+}
+int32_t targetFlags = InputTarget::FLAG_FOREGROUND
+| InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER;
+if (isSplit) {
+targetFlags |= InputTarget::FLAG_SPLIT;
+}
+if (isWindowObscuredAtPointLocked(newTouchedWindowHandle, x, y)) {
+targetFlags |= InputTarget::FLAG_WINDOW_IS_OBSCURED;
+}
+BitSet32 pointerIds;
+if (isSplit) {
+pointerIds.markBit(entry->pointerProperties[0].id);
+}
+mTempTouchState.addOrUpdateWindow(newTouchedWindowHandle, targetFlags, pointerIds);
+}
+}
+}
+if (newHoverWindowHandle != mLastHoverWindowHandle) {
+// Let the previous window know that the hover sequence is over.
+if (mLastHoverWindowHandle != NULL) {
+#if DEBUG_HOVER
+ALOGD("Sending hover exit event to window %s.",
+mLastHoverWindowHandle->getName().string());
+#endif
+mTempTouchState.addOrUpdateWindow(mLastHoverWindowHandle,
+InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT, BitSet32(0));
+}
+// Let the new window know that the hover sequence is starting.
+if (newHoverWindowHandle != NULL) {
+#if DEBUG_HOVER
+ALOGD("Sending hover enter event to window %s.",
+newHoverWindowHandle->getName().string());
+#endif
+mTempTouchState.addOrUpdateWindow(newHoverWindowHandle,
+InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER, BitSet32(0));
+}
+}
+// Check permission to inject into all touched foreground windows and ensure there
+// is at least one touched foreground window.
+{
+bool haveForegroundWindow = false;
+for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) {
+haveForegroundWindow = true;
+if (! checkInjectionPermission(touchedWindow.windowHandle,
+entry->injectionState)) {
+injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+injectionPermission = INJECTION_PERMISSION_DENIED;
+goto Failed;
+}
+}
+}
+if (! haveForegroundWindow) {
+#if DEBUG_FOCUS
+ALOGD("Dropping event because there is no touched foreground window to receive it.");
+#endif
+injectionResult = INPUT_EVENT_INJECTION_FAILED;
+goto Failed;
+}
+// Permission granted to injection into all touched foreground windows.
+injectionPermission = INJECTION_PERMISSION_GRANTED;
+}
+// Check whether windows listening for outside touches are owned by the same UID. If it is
+// set the policy flag that we will not reveal coordinate information to this window.
+if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+sp<InputWindowHandle> foregroundWindowHandle =
+mTempTouchState.getFirstForegroundWindowHandle();
+const int32_t foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid;
+for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+if (touchedWindow.targetFlags & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) {
+sp<InputWindowHandle> inputWindowHandle = touchedWindow.windowHandle;
+if (inputWindowHandle->getInfo()->ownerUid != foregroundWindowUid) {
+mTempTouchState.addOrUpdateWindow(inputWindowHandle,
+InputTarget::FLAG_ZERO_COORDS, BitSet32(0));
+}
+}
+}
+}
+// Ensure all touched foreground windows are ready for new input.
+for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTempTouchState.windows[i];
+if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) {
+// If the touched window is paused then keep waiting.
+if (touchedWindow.windowHandle->getInfo()->paused) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+NULL, touchedWindow.windowHandle, nextWakeupTime,
+"Waiting because the touched window is paused.");
+goto Unresponsive;
+}
+// If the touched window is still working on previous events then keep waiting.
+if (!isWindowReadyForMoreInputLocked(currentTime, touchedWindow.windowHandle, entry)) {
+injectionResult = handleTargetsNotReadyLocked(currentTime, entry,
+NULL, touchedWindow.windowHandle, nextWakeupTime,
+"Waiting because the touched window has not finished "
+"processing the input events that were previously delivered to it.");
+goto Unresponsive;
+}
+}
+}
+// If this is the first pointer going down and the touched window has a wallpaper
+// then also add the touched wallpaper windows so they are locked in for the duration
+// of the touch gesture.
+// We do not collect wallpapers during HOVER_MOVE or SCROLL because the wallpaper
+// engine only supports touch events.  We would need to add a mechanism similar
+// to View.onGenericMotionEvent to enable wallpapers to handle these events.
+if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+sp<InputWindowHandle> foregroundWindowHandle =
+mTempTouchState.getFirstForegroundWindowHandle();
+if (foregroundWindowHandle->getInfo()->hasWallpaper) {
+for (size_t i = 0; i < mWindowHandles.size(); i++) {
+sp<InputWindowHandle> windowHandle = mWindowHandles.itemAt(i);
+const InputWindowInfo* info = windowHandle->getInfo();
+if (info->displayId == displayId
+&& windowHandle->getInfo()->layoutParamsType
+== InputWindowInfo::TYPE_WALLPAPER) {
+mTempTouchState.addOrUpdateWindow(windowHandle,
+InputTarget::FLAG_WINDOW_IS_OBSCURED
+| InputTarget::FLAG_DISPATCH_AS_IS,
+BitSet32(0));
+}
+}
+}
+}
+// Success!  Output targets.
+injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+for (size_t i = 0; i < mTempTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTempTouchState.windows.itemAt(i);
+addWindowTargetLocked(touchedWindow.windowHandle, touchedWindow.targetFlags,
+touchedWindow.pointerIds, inputTargets);
+}
+// Drop the outside or hover touch windows since we will not care about them
+// in the next iteration.
+mTempTouchState.filterNonAsIsTouchWindows();
+Failed:
+// Check injection permission once and for all.
+if (injectionPermission == INJECTION_PERMISSION_UNKNOWN) {
+if (checkInjectionPermission(NULL, entry->injectionState)) {
+injectionPermission = INJECTION_PERMISSION_GRANTED;
+} else {
+injectionPermission = INJECTION_PERMISSION_DENIED;
+}
+}
+// Update final pieces of touch state if the injector had permission.
+if (injectionPermission == INJECTION_PERMISSION_GRANTED) {
+if (!wrongDevice) {
+if (switchedDevice) {
+#if DEBUG_FOCUS
+ALOGD("Conflicting pointer actions: Switched to a different device.");
+#endif
+*outConflictingPointerActions = true;
+}
+if (isHoverAction) {
+// Started hovering, therefore no longer down.
+if (mTouchState.down) {
+#if DEBUG_FOCUS
+ALOGD("Conflicting pointer actions: Hover received while pointer was down.");
+#endif
+*outConflictingPointerActions = true;
+}
+mTouchState.reset();
+if (maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER
+|| maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) {
+mTouchState.deviceId = entry->deviceId;
+mTouchState.source = entry->source;
+mTouchState.displayId = displayId;
+}
+} else if (maskedAction == AMOTION_EVENT_ACTION_UP
+|| maskedAction == AMOTION_EVENT_ACTION_CANCEL) {
+// All pointers up or canceled.
+mTouchState.reset();
+} else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+// First pointer went down.
+if (mTouchState.down) {
+#if DEBUG_FOCUS
+ALOGD("Conflicting pointer actions: Down received while already down.");
+#endif
+*outConflictingPointerActions = true;
+}
+mTouchState.copyFrom(mTempTouchState);
+} else if (maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) {
+// One pointer went up.
+if (isSplit) {
+int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+uint32_t pointerId = entry->pointerProperties[pointerIndex].id;
+for (size_t i = 0; i < mTempTouchState.windows.size(); ) {
+TouchedWindow& touchedWindow = mTempTouchState.windows.editItemAt(i);
+if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) {
+touchedWindow.pointerIds.clearBit(pointerId);
+if (touchedWindow.pointerIds.isEmpty()) {
+mTempTouchState.windows.removeAt(i);
+continue;
+}
+}
+i += 1;
+}
+}
+mTouchState.copyFrom(mTempTouchState);
+} else if (maskedAction == AMOTION_EVENT_ACTION_SCROLL) {
+// Discard temporary touch state since it was only valid for this action.
+} else {
+// Save changes to touch state as-is for all other actions.
+mTouchState.copyFrom(mTempTouchState);
+}
+// Update hover state.
+mLastHoverWindowHandle = newHoverWindowHandle;
+}
+} else {
+#if DEBUG_FOCUS
+ALOGD("Not updating touch focus because injection was denied.");
+#endif
+}
+Unresponsive:
+// Reset temporary touch state to ensure we release unnecessary references to input channels.
+mTempTouchState.reset();
+nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime);
+updateDispatchStatisticsLocked(currentTime, entry,
+injectionResult, timeSpentWaitingForApplication);
+#if DEBUG_FOCUS
+ALOGD("findTouchedWindow finished: injectionResult=%d, injectionPermission=%d, "
+"timeSpentWaitingForApplication=%0.1fms",
+injectionResult, injectionPermission, timeSpentWaitingForApplication / 1000000.0);
+#endif
+return injectionResult;
+}
+void InputDispatcher::addWindowTargetLocked(const sp<InputWindowHandle>& windowHandle,
+int32_t targetFlags, BitSet32 pointerIds, Vector<InputTarget>& inputTargets) {
+inputTargets.push();
+const InputWindowInfo* windowInfo = windowHandle->getInfo();
+InputTarget& target = inputTargets.editTop();
+target.inputChannel = windowInfo->inputChannel;
+target.flags = targetFlags;
+target.xOffset = - windowInfo->frameLeft;
+target.yOffset = - windowInfo->frameTop;
+target.scaleFactor = windowInfo->scaleFactor;
+target.pointerIds = pointerIds;
+}
+void InputDispatcher::addMonitoringTargetsLocked(Vector<InputTarget>& inputTargets) {
+for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+inputTargets.push();
+InputTarget& target = inputTargets.editTop();
+target.inputChannel = mMonitoringChannels[i];
+target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+target.xOffset = 0;
+target.yOffset = 0;
+target.pointerIds.clear();
+target.scaleFactor = 1.0f;
+}
+}
+bool InputDispatcher::checkInjectionPermission(const sp<InputWindowHandle>& windowHandle,
+const InjectionState* injectionState) {
+if (injectionState
+&& (windowHandle == NULL
+|| windowHandle->getInfo()->ownerUid != injectionState->injectorUid)
+&& !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) {
+if (windowHandle != NULL) {
+ALOGW("Permission denied: injecting event from pid %d uid %d to window %s "
+"owned by uid %d",
+injectionState->injectorPid, injectionState->injectorUid,
+windowHandle->getName().string(),
+windowHandle->getInfo()->ownerUid);
+} else {
+ALOGW("Permission denied: injecting event from pid %d uid %d",
+injectionState->injectorPid, injectionState->injectorUid);
+}
+return false;
+}
+return true;
+}
+bool InputDispatcher::isWindowObscuredAtPointLocked(
+const sp<InputWindowHandle>& windowHandle, int32_t x, int32_t y) const {
+int32_t displayId = windowHandle->getInfo()->displayId;
+size_t numWindows = mWindowHandles.size();
+for (size_t i = 0; i < numWindows; i++) {
+sp<InputWindowHandle> otherHandle = mWindowHandles.itemAt(i);
+if (otherHandle == windowHandle) {
+break;
+}
+const InputWindowInfo* otherInfo = otherHandle->getInfo();
+if (otherInfo->displayId == displayId
+&& otherInfo->visible && !otherInfo->isTrustedOverlay()
+&& otherInfo->frameContainsPoint(x, y)) {
+return true;
+}
+}
+return false;
+}
+bool InputDispatcher::isWindowReadyForMoreInputLocked(nsecs_t currentTime,
+const sp<InputWindowHandle>& windowHandle, const EventEntry* eventEntry) {
+ssize_t connectionIndex = getConnectionIndexLocked(windowHandle->getInputChannel());
+if (connectionIndex >= 0) {
+sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+if (connection->inputPublisherBlocked) {
+return false;
+}
+if (eventEntry->type == EventEntry::TYPE_KEY) {
+// If the event is a key event, then we must wait for all previous events to
+// complete before delivering it because previous events may have the
+// side-effect of transferring focus to a different window and we want to
+// ensure that the following keys are sent to the new window.
+//
+// Suppose the user touches a button in a window then immediately presses "A".
+// If the button causes a pop-up window to appear then we want to ensure that
+// the "A" key is delivered to the new pop-up window.  This is because users
+// often anticipate pending UI changes when typing on a keyboard.
+// To obtain this behavior, we must serialize key events with respect to all
+// prior input events.
+return connection->outboundQueue.isEmpty()
+&& connection->waitQueue.isEmpty();
+}
+// Touch events can always be sent to a window immediately because the user intended
+// to touch whatever was visible at the time.  Even if focus changes or a new
+// window appears moments later, the touch event was meant to be delivered to
+// whatever window happened to be on screen at the time.
+//
+// Generic motion events, such as trackball or joystick events are a little trickier.
+// Like key events, generic motion events are delivered to the focused window.
+// Unlike key events, generic motion events don't tend to transfer focus to other
+// windows and it is not important for them to be serialized.  So we prefer to deliver
+// generic motion events as soon as possible to improve efficiency and reduce lag
+// through batching.
+//
+// The one case where we pause input event delivery is when the wait queue is piling
+// up with lots of events because the application is not responding.
+// This condition ensures that ANRs are detected reliably.
+if (!connection->waitQueue.isEmpty()
+&& currentTime >= connection->waitQueue.head->eventEntry->eventTime
++ STREAM_AHEAD_EVENT_TIMEOUT) {
+return false;
+}
+}
+return true;
+}
+String8 InputDispatcher::getApplicationWindowLabelLocked(
+const sp<InputApplicationHandle>& applicationHandle,
+const sp<InputWindowHandle>& windowHandle) {
+if (applicationHandle != NULL) {
+if (windowHandle != NULL) {
+String8 label(applicationHandle->getName());
+label.append(" - ");
+label.append(windowHandle->getName());
+return label;
+} else {
+return applicationHandle->getName();
+}
+} else if (windowHandle != NULL) {
+return windowHandle->getName();
+} else {
+return String8("<unknown application or window>");
+}
+}
+void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) {
+if (mFocusedWindowHandle != NULL) {
+const InputWindowInfo* info = mFocusedWindowHandle->getInfo();
+if (info->inputFeatures & InputWindowInfo::INPUT_FEATURE_DISABLE_USER_ACTIVITY) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("Not poking user activity: disabled by window '%s'.", info->name.string());
+#endif
+return;
+}
+}
+int32_t eventType = USER_ACTIVITY_EVENT_OTHER;
+switch (eventEntry->type) {
+case EventEntry::TYPE_MOTION: {
+const MotionEntry* motionEntry = static_cast<const MotionEntry*>(eventEntry);
+if (motionEntry->action == AMOTION_EVENT_ACTION_CANCEL) {
+return;
+}
+if (MotionEvent::isTouchEvent(motionEntry->source, motionEntry->action)) {
+eventType = USER_ACTIVITY_EVENT_TOUCH;
+}
+break;
+}
+case EventEntry::TYPE_KEY: {
+const KeyEntry* keyEntry = static_cast<const KeyEntry*>(eventEntry);
+if (keyEntry->flags & AKEY_EVENT_FLAG_CANCELED) {
+return;
+}
+eventType = USER_ACTIVITY_EVENT_BUTTON;
+break;
+}
+}
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doPokeUserActivityLockedInterruptible);
+commandEntry->eventTime = eventEntry->eventTime;
+commandEntry->userActivityEventType = eventType;
+}
+void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime,
+const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ prepareDispatchCycle - flags=0x%08x, "
+"xOffset=%f, yOffset=%f, scaleFactor=%f, "
+"pointerIds=0x%x",
+connection->getInputChannelName(), inputTarget->flags,
+inputTarget->xOffset, inputTarget->yOffset,
+inputTarget->scaleFactor, inputTarget->pointerIds.value);
+#endif
+// Skip this event if the connection status is not normal.
+// We don't want to enqueue additional outbound events if the connection is broken.
+if (connection->status != Connection::STATUS_NORMAL) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ Dropping event because the channel status is %s",
+connection->getInputChannelName(), connection->getStatusLabel());
+#endif
+return;
+}
+// Split a motion event if needed.
+if (inputTarget->flags & InputTarget::FLAG_SPLIT) {
+ALOG_ASSERT(eventEntry->type == EventEntry::TYPE_MOTION);
+MotionEntry* originalMotionEntry = static_cast<MotionEntry*>(eventEntry);
+if (inputTarget->pointerIds.count() != originalMotionEntry->pointerCount) {
+MotionEntry* splitMotionEntry = splitMotionEvent(
+originalMotionEntry, inputTarget->pointerIds);
+if (!splitMotionEntry) {
+return; // split event was dropped
+}
+#if DEBUG_FOCUS
+ALOGD("channel '%s' ~ Split motion event.",
+connection->getInputChannelName());
+logOutboundMotionDetailsLocked("  ", splitMotionEntry);
+#endif
+enqueueDispatchEntriesLocked(currentTime, connection,
+splitMotionEntry, inputTarget);
+splitMotionEntry->release();
+return;
+}
+}
+// Not splitting.  Enqueue dispatch entries for the event as is.
+enqueueDispatchEntriesLocked(currentTime, connection, eventEntry, inputTarget);
+}
+void InputDispatcher::enqueueDispatchEntriesLocked(nsecs_t currentTime,
+const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget) {
+bool wasEmpty = connection->outboundQueue.isEmpty();
+// Enqueue dispatch entries for the requested modes.
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT);
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_OUTSIDE);
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER);
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_IS);
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT);
+enqueueDispatchEntryLocked(connection, eventEntry, inputTarget,
+InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER);
+// If the outbound queue was previously empty, start the dispatch cycle going.
+if (wasEmpty && !connection->outboundQueue.isEmpty()) {
+startDispatchCycleLocked(currentTime, connection);
+}
+}
+void InputDispatcher::enqueueDispatchEntryLocked(
+const sp<Connection>& connection, EventEntry* eventEntry, const InputTarget* inputTarget,
+int32_t dispatchMode) {
+int32_t inputTargetFlags = inputTarget->flags;
+if (!(inputTargetFlags & dispatchMode)) {
+return;
+}
+inputTargetFlags = (inputTargetFlags & ~InputTarget::FLAG_DISPATCH_MASK) | dispatchMode;
+// This is a new event.
+// Enqueue a new dispatch entry onto the outbound queue for this connection.
+DispatchEntry* dispatchEntry = new DispatchEntry(eventEntry, // increments ref
+inputTargetFlags, inputTarget->xOffset, inputTarget->yOffset,
+inputTarget->scaleFactor);
+// Apply target flags and update the connection's input state.
+switch (eventEntry->type) {
+case EventEntry::TYPE_KEY: {
+KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry);
+dispatchEntry->resolvedAction = keyEntry->action;
+dispatchEntry->resolvedFlags = keyEntry->flags;
+if (!connection->inputState.trackKey(keyEntry,
+dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent key event",
+connection->getInputChannelName());
+#endif
+delete dispatchEntry;
+return; // skip the inconsistent event
+}
+break;
+}
+case EventEntry::TYPE_MOTION: {
+MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry);
+if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_OUTSIDE) {
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_OUTSIDE;
+} else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT) {
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_EXIT;
+} else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER) {
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER;
+} else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_CANCEL;
+} else if (dispatchMode & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER) {
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_DOWN;
+} else {
+dispatchEntry->resolvedAction = motionEntry->action;
+}
+if (dispatchEntry->resolvedAction == AMOTION_EVENT_ACTION_HOVER_MOVE
+&& !connection->inputState.isHovering(
+motionEntry->deviceId, motionEntry->source, motionEntry->displayId)) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: filling in missing hover enter event",
+connection->getInputChannelName());
+#endif
+dispatchEntry->resolvedAction = AMOTION_EVENT_ACTION_HOVER_ENTER;
+}
+dispatchEntry->resolvedFlags = motionEntry->flags;
+if (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_OBSCURED) {
+dispatchEntry->resolvedFlags |= AMOTION_EVENT_FLAG_WINDOW_IS_OBSCURED;
+}
+if (!connection->inputState.trackMotion(motionEntry,
+dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags)) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion event",
+connection->getInputChannelName());
+#endif
+delete dispatchEntry;
+return; // skip the inconsistent event
+}
+break;
+}
+}
+// Remember that we are waiting for this dispatch to complete.
+if (dispatchEntry->hasForegroundTarget()) {
+incrementPendingForegroundDispatchesLocked(eventEntry);
+}
+// Enqueue the dispatch entry.
+connection->outboundQueue.enqueueAtTail(dispatchEntry);
+traceOutboundQueueLengthLocked(connection);
+}
+void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime,
+const sp<Connection>& connection) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ startDispatchCycle",
+connection->getInputChannelName());
+#endif
+while (connection->status == Connection::STATUS_NORMAL
+&& !connection->outboundQueue.isEmpty()) {
+DispatchEntry* dispatchEntry = connection->outboundQueue.head;
+dispatchEntry->deliveryTime = currentTime;
+// Publish the event.
+status_t status;
+EventEntry* eventEntry = dispatchEntry->eventEntry;
+switch (eventEntry->type) {
+case EventEntry::TYPE_KEY: {
+KeyEntry* keyEntry = static_cast<KeyEntry*>(eventEntry);
+// Publish the key event.
+status = connection->inputPublisher.publishKeyEvent(dispatchEntry->seq,
+keyEntry->deviceId, keyEntry->source,
+dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags,
+keyEntry->keyCode, keyEntry->scanCode,
+keyEntry->metaState, keyEntry->repeatCount, keyEntry->downTime,
+keyEntry->eventTime);
+break;
+}
+case EventEntry::TYPE_MOTION: {
+MotionEntry* motionEntry = static_cast<MotionEntry*>(eventEntry);
+PointerCoords scaledCoords[MAX_POINTERS];
+const PointerCoords* usingCoords = motionEntry->pointerCoords;
+// Set the X and Y offset depending on the input source.
+float xOffset, yOffset, scaleFactor;
+if ((motionEntry->source & AINPUT_SOURCE_CLASS_POINTER)
+&& !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) {
+scaleFactor = dispatchEntry->scaleFactor;
+xOffset = dispatchEntry->xOffset * scaleFactor;
+yOffset = dispatchEntry->yOffset * scaleFactor;
+if (scaleFactor != 1.0f) {
+for (size_t i = 0; i < motionEntry->pointerCount; i++) {
+scaledCoords[i] = motionEntry->pointerCoords[i];
+scaledCoords[i].scale(scaleFactor);
+}
+usingCoords = scaledCoords;
+}
+} else {
+xOffset = 0.0f;
+yOffset = 0.0f;
+scaleFactor = 1.0f;
+// We don't want the dispatch target to know.
+if (dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS) {
+for (size_t i = 0; i < motionEntry->pointerCount; i++) {
+scaledCoords[i].clear();
+}
+usingCoords = scaledCoords;
+}
+}
+// Publish the motion event.
+status = connection->inputPublisher.publishMotionEvent(dispatchEntry->seq,
+motionEntry->deviceId, motionEntry->source,
+dispatchEntry->resolvedAction, dispatchEntry->resolvedFlags,
+motionEntry->edgeFlags, motionEntry->metaState, motionEntry->buttonState,
+xOffset, yOffset,
+motionEntry->xPrecision, motionEntry->yPrecision,
+motionEntry->downTime, motionEntry->eventTime,
+motionEntry->pointerCount, motionEntry->pointerProperties,
+usingCoords);
+break;
+}
+default:
+ALOG_ASSERT(false);
+return;
+}
+// Check the result.
+if (status) {
+if (status == WOULD_BLOCK) {
+if (connection->waitQueue.isEmpty()) {
+ALOGE("channel '%s' ~ Could not publish event because the pipe is full. "
+"This is unexpected because the wait queue is empty, so the pipe "
+"should be empty and we shouldn't have any problems writing an "
+"event to it, status=%d", connection->getInputChannelName(), status);
+abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/);
+} else {
+// Pipe is full and we are waiting for the app to finish process some events
+// before sending more events to it.
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ Could not publish event because the pipe is full, "
+"waiting for the application to catch up",
+connection->getInputChannelName());
+#endif
+connection->inputPublisherBlocked = true;
+}
+} else {
+ALOGE("channel '%s' ~ Could not publish event due to an unexpected error, "
+"status=%d", connection->getInputChannelName(), status);
+abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/);
+}
+return;
+}
+// Re-enqueue the event on the wait queue.
+connection->outboundQueue.dequeue(dispatchEntry);
+traceOutboundQueueLengthLocked(connection);
+connection->waitQueue.enqueueAtTail(dispatchEntry);
+traceWaitQueueLengthLocked(connection);
+}
+}
+void InputDispatcher::finishDispatchCycleLocked(nsecs_t currentTime,
+const sp<Connection>& connection, uint32_t seq, bool handled) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ finishDispatchCycle - seq=%u, handled=%s",
+connection->getInputChannelName(), seq, toString(handled));
+#endif
+connection->inputPublisherBlocked = false;
+if (connection->status == Connection::STATUS_BROKEN
+|| connection->status == Connection::STATUS_ZOMBIE) {
+return;
+}
+// Notify other system components and prepare to start the next dispatch cycle.
+onDispatchCycleFinishedLocked(currentTime, connection, seq, handled);
+}
+void InputDispatcher::abortBrokenDispatchCycleLocked(nsecs_t currentTime,
+const sp<Connection>& connection, bool notify) {
+#if DEBUG_DISPATCH_CYCLE
+ALOGD("channel '%s' ~ abortBrokenDispatchCycle - notify=%s",
+connection->getInputChannelName(), toString(notify));
+#endif
+// Clear the dispatch queues.
+drainDispatchQueueLocked(&connection->outboundQueue);
+traceOutboundQueueLengthLocked(connection);
+drainDispatchQueueLocked(&connection->waitQueue);
+traceWaitQueueLengthLocked(connection);
+// The connection appears to be unrecoverably broken.
+// Ignore already broken or zombie connections.
+if (connection->status == Connection::STATUS_NORMAL) {
+connection->status = Connection::STATUS_BROKEN;
+if (notify) {
+// Notify other system components.
+onDispatchCycleBrokenLocked(currentTime, connection);
+}
+}
+}
+void InputDispatcher::drainDispatchQueueLocked(Queue<DispatchEntry>* queue) {
+while (!queue->isEmpty()) {
+DispatchEntry* dispatchEntry = queue->dequeueAtHead();
+releaseDispatchEntryLocked(dispatchEntry);
+}
+}
+void InputDispatcher::releaseDispatchEntryLocked(DispatchEntry* dispatchEntry) {
+if (dispatchEntry->hasForegroundTarget()) {
+decrementPendingForegroundDispatchesLocked(dispatchEntry->eventEntry);
+}
+delete dispatchEntry;
+}
+int InputDispatcher::handleReceiveCallback(int fd, int events, void* data) {
+InputDispatcher* d = static_cast<InputDispatcher*>(data);
+{ // acquire lock
+AutoMutex _l(d->mLock);
+ssize_t connectionIndex = d->mConnectionsByFd.indexOfKey(fd);
+if (connectionIndex < 0) {
+ALOGE("Received spurious receive callback for unknown input channel.  "
+"fd=%d, events=0x%x", fd, events);
+return 0; // remove the callback
+}
+bool notify;
+sp<Connection> connection = d->mConnectionsByFd.valueAt(connectionIndex);
+if (!(events & (ALOOPER_EVENT_ERROR | ALOOPER_EVENT_HANGUP))) {
+if (!(events & ALOOPER_EVENT_INPUT)) {
+ALOGW("channel '%s' ~ Received spurious callback for unhandled poll event.  "
+"events=0x%x", connection->getInputChannelName(), events);
+return 1;
+}
+nsecs_t currentTime = now();
+bool gotOne = false;
+status_t status;
+for (;;) {
+uint32_t seq;
+bool handled;
+status = connection->inputPublisher.receiveFinishedSignal(&seq, &handled);
+if (status) {
+break;
+}
+d->finishDispatchCycleLocked(currentTime, connection, seq, handled);
+gotOne = true;
+}
+if (gotOne) {
+d->runCommandsLockedInterruptible();
+if (status == WOULD_BLOCK) {
+return 1;
+}
+}
+notify = status != DEAD_OBJECT || !connection->monitor;
+if (notify) {
+ALOGE("channel '%s' ~ Failed to receive finished signal.  status=%d",
+connection->getInputChannelName(), status);
+}
+} else {
+// Monitor channels are never explicitly unregistered.
+// We do it automatically when the remote endpoint is closed so don't warn
+// about them.
+notify = !connection->monitor;
+if (notify) {
+ALOGW("channel '%s' ~ Consumer closed input channel or an error occurred.  "
+"events=0x%x", connection->getInputChannelName(), events);
+}
+}
+// Unregister the channel.
+d->unregisterInputChannelLocked(connection->inputChannel, notify);
+return 0; // remove the callback
+} // release lock
+}
+void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked(
+const CancelationOptions& options) {
+for (size_t i = 0; i < mConnectionsByFd.size(); i++) {
+synthesizeCancelationEventsForConnectionLocked(
+mConnectionsByFd.valueAt(i), options);
+}
+}
+void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked(
+const sp<InputChannel>& channel, const CancelationOptions& options) {
+ssize_t index = getConnectionIndexLocked(channel);
+if (index >= 0) {
+synthesizeCancelationEventsForConnectionLocked(
+mConnectionsByFd.valueAt(index), options);
+}
+}
+void InputDispatcher::synthesizeCancelationEventsForConnectionLocked(
+const sp<Connection>& connection, const CancelationOptions& options) {
+if (connection->status == Connection::STATUS_BROKEN) {
+return;
+}
+nsecs_t currentTime = now();
+Vector<EventEntry*> cancelationEvents;
+connection->inputState.synthesizeCancelationEvents(currentTime,
+cancelationEvents, options);
+if (!cancelationEvents.isEmpty()) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("channel '%s' ~ Synthesized %d cancelation events to bring channel back in sync "
+"with reality: %s, mode=%d.",
+connection->getInputChannelName(), cancelationEvents.size(),
+options.reason, options.mode);
+#endif
+for (size_t i = 0; i < cancelationEvents.size(); i++) {
+EventEntry* cancelationEventEntry = cancelationEvents.itemAt(i);
+switch (cancelationEventEntry->type) {
+case EventEntry::TYPE_KEY:
+logOutboundKeyDetailsLocked("cancel - ",
+static_cast<KeyEntry*>(cancelationEventEntry));
+break;
+case EventEntry::TYPE_MOTION:
+logOutboundMotionDetailsLocked("cancel - ",
+static_cast<MotionEntry*>(cancelationEventEntry));
+break;
+}
+InputTarget target;
+sp<InputWindowHandle> windowHandle = getWindowHandleLocked(connection->inputChannel);
+if (windowHandle != NULL) {
+const InputWindowInfo* windowInfo = windowHandle->getInfo();
+target.xOffset = -windowInfo->frameLeft;
+target.yOffset = -windowInfo->frameTop;
+target.scaleFactor = windowInfo->scaleFactor;
+} else {
+target.xOffset = 0;
+target.yOffset = 0;
+target.scaleFactor = 1.0f;
+}
+target.inputChannel = connection->inputChannel;
+target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+enqueueDispatchEntryLocked(connection, cancelationEventEntry, // increments ref
+&target, InputTarget::FLAG_DISPATCH_AS_IS);
+cancelationEventEntry->release();
+}
+startDispatchCycleLocked(currentTime, connection);
+}
+}
+InputDispatcher::MotionEntry*
+InputDispatcher::splitMotionEvent(const MotionEntry* originalMotionEntry, BitSet32 pointerIds) {
+ALOG_ASSERT(pointerIds.value != 0);
+uint32_t splitPointerIndexMap[MAX_POINTERS];
+PointerProperties splitPointerProperties[MAX_POINTERS];
+PointerCoords splitPointerCoords[MAX_POINTERS];
+uint32_t originalPointerCount = originalMotionEntry->pointerCount;
+uint32_t splitPointerCount = 0;
+for (uint32_t originalPointerIndex = 0; originalPointerIndex < originalPointerCount;
+originalPointerIndex++) {
+const PointerProperties& pointerProperties =
+originalMotionEntry->pointerProperties[originalPointerIndex];
+uint32_t pointerId = uint32_t(pointerProperties.id);
+if (pointerIds.hasBit(pointerId)) {
+splitPointerIndexMap[splitPointerCount] = originalPointerIndex;
+splitPointerProperties[splitPointerCount].copyFrom(pointerProperties);
+splitPointerCoords[splitPointerCount].copyFrom(
+originalMotionEntry->pointerCoords[originalPointerIndex]);
+splitPointerCount += 1;
+}
+}
+if (splitPointerCount != pointerIds.count()) {
+// This is bad.  We are missing some of the pointers that we expected to deliver.
+// Most likely this indicates that we received an ACTION_MOVE events that has
+// different pointer ids than we expected based on the previous ACTION_DOWN
+// or ACTION_POINTER_DOWN events that caused us to decide to split the pointers
+// in this way.
+ALOGW("Dropping split motion event because the pointer count is %d but "
+"we expected there to be %d pointers.  This probably means we received "
+"a broken sequence of pointer ids from the input device.",
+splitPointerCount, pointerIds.count());
+return NULL;
+}
+int32_t action = originalMotionEntry->action;
+int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK;
+if (maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN
+|| maskedAction == AMOTION_EVENT_ACTION_POINTER_UP) {
+int32_t originalPointerIndex = getMotionEventActionPointerIndex(action);
+const PointerProperties& pointerProperties =
+originalMotionEntry->pointerProperties[originalPointerIndex];
+uint32_t pointerId = uint32_t(pointerProperties.id);
+if (pointerIds.hasBit(pointerId)) {
+if (pointerIds.count() == 1) {
+// The first/last pointer went down/up.
+action = maskedAction == AMOTION_EVENT_ACTION_POINTER_DOWN
+? AMOTION_EVENT_ACTION_DOWN : AMOTION_EVENT_ACTION_UP;
+} else {
+// A secondary pointer went down/up.
+uint32_t splitPointerIndex = 0;
+while (pointerId != uint32_t(splitPointerProperties[splitPointerIndex].id)) {
+splitPointerIndex += 1;
+}
+action = maskedAction | (splitPointerIndex
+<< AMOTION_EVENT_ACTION_POINTER_INDEX_SHIFT);
+}
+} else {
+// An unrelated pointer changed.
+action = AMOTION_EVENT_ACTION_MOVE;
+}
+}
+MotionEntry* splitMotionEntry = new MotionEntry(
+originalMotionEntry->eventTime,
+originalMotionEntry->deviceId,
+originalMotionEntry->source,
+originalMotionEntry->policyFlags,
+action,
+originalMotionEntry->flags,
+originalMotionEntry->metaState,
+originalMotionEntry->buttonState,
+originalMotionEntry->edgeFlags,
+originalMotionEntry->xPrecision,
+originalMotionEntry->yPrecision,
+originalMotionEntry->downTime,
+originalMotionEntry->displayId,
+splitPointerCount, splitPointerProperties, splitPointerCoords);
+if (originalMotionEntry->injectionState) {
+splitMotionEntry->injectionState = originalMotionEntry->injectionState;
+splitMotionEntry->injectionState->refCount += 1;
+}
+return splitMotionEntry;
+}
+void InputDispatcher::notifyConfigurationChanged(const NotifyConfigurationChangedArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("notifyConfigurationChanged - eventTime=%lld", args->eventTime);
+#endif
+bool needWake;
+{ // acquire lock
+AutoMutex _l(mLock);
+ConfigurationChangedEntry* newEntry = new ConfigurationChangedEntry(args->eventTime);
+needWake = enqueueInboundEventLocked(newEntry);
+} // release lock
+if (needWake) {
+mLooper->wake();
+}
+}
+void InputDispatcher::notifyKey(const NotifyKeyArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("notifyKey - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, action=0x%x, "
+"flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%lld",
+args->eventTime, args->deviceId, args->source, args->policyFlags,
+args->action, args->flags, args->keyCode, args->scanCode,
+args->metaState, args->downTime);
+#endif
+if (!validateKeyEvent(args->action)) {
+return;
+}
+uint32_t policyFlags = args->policyFlags;
+int32_t flags = args->flags;
+int32_t metaState = args->metaState;
+if ((policyFlags & POLICY_FLAG_VIRTUAL) || (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY)) {
+policyFlags |= POLICY_FLAG_VIRTUAL;
+flags |= AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY;
+}
+if (policyFlags & POLICY_FLAG_ALT) {
+metaState |= AMETA_ALT_ON | AMETA_ALT_LEFT_ON;
+}
+if (policyFlags & POLICY_FLAG_ALT_GR) {
+metaState |= AMETA_ALT_ON | AMETA_ALT_RIGHT_ON;
+}
+if (policyFlags & POLICY_FLAG_SHIFT) {
+metaState |= AMETA_SHIFT_ON | AMETA_SHIFT_LEFT_ON;
+}
+if (policyFlags & POLICY_FLAG_CAPS_LOCK) {
+metaState |= AMETA_CAPS_LOCK_ON;
+}
+if (policyFlags & POLICY_FLAG_FUNCTION) {
+metaState |= AMETA_FUNCTION_ON;
+}
+policyFlags |= POLICY_FLAG_TRUSTED;
+KeyEvent event;
+event.initialize(args->deviceId, args->source, args->action,
+flags, args->keyCode, args->scanCode, metaState, 0,
+args->downTime, args->eventTime);
+mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags);
+if (policyFlags & POLICY_FLAG_WOKE_HERE) {
+flags |= AKEY_EVENT_FLAG_WOKE_HERE;
+}
+bool needWake;
+{ // acquire lock
+mLock.lock();
+if (shouldSendKeyToInputFilterLocked(args)) {
+mLock.unlock();
+policyFlags |= POLICY_FLAG_FILTERED;
+if (!mPolicy->filterInputEvent(&event, policyFlags)) {
+return; // event was consumed by the filter
+}
+mLock.lock();
+}
+int32_t repeatCount = 0;
+KeyEntry* newEntry = new KeyEntry(args->eventTime,
+args->deviceId, args->source, policyFlags,
+args->action, flags, args->keyCode, args->scanCode,
+metaState, repeatCount, args->downTime);
+needWake = enqueueInboundEventLocked(newEntry);
+mLock.unlock();
+} // release lock
+if (needWake) {
+mLooper->wake();
+}
+}
+bool InputDispatcher::shouldSendKeyToInputFilterLocked(const NotifyKeyArgs* args) {
+return mInputFilterEnabled;
+}
+void InputDispatcher::notifyMotion(const NotifyMotionArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("notifyMotion - eventTime=%lld, deviceId=%d, source=0x%x, policyFlags=0x%x, "
+"action=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x, edgeFlags=0x%x, "
+"xPrecision=%f, yPrecision=%f, downTime=%lld",
+args->eventTime, args->deviceId, args->source, args->policyFlags,
+args->action, args->flags, args->metaState, args->buttonState,
+args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime);
+for (uint32_t i = 0; i < args->pointerCount; i++) {
+ALOGD("  Pointer %d: id=%d, toolType=%d, "
+"x=%f, y=%f, pressure=%f, size=%f, "
+"touchMajor=%f, touchMinor=%f, toolMajor=%f, toolMinor=%f, "
+"orientation=%f",
+i, args->pointerProperties[i].id,
+args->pointerProperties[i].toolType,
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_X),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_Y),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_PRESSURE),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_SIZE),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MAJOR),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOUCH_MINOR),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MAJOR),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_TOOL_MINOR),
+args->pointerCoords[i].getAxisValue(AMOTION_EVENT_AXIS_ORIENTATION));
+}
+#endif
+if (!validateMotionEvent(args->action, args->pointerCount, args->pointerProperties)) {
+return;
+}
+uint32_t policyFlags = args->policyFlags;
+policyFlags |= POLICY_FLAG_TRUSTED;
+mPolicy->interceptMotionBeforeQueueing(args->eventTime, /*byref*/ policyFlags);
+bool needWake;
+{ // acquire lock
+mLock.lock();
+if (shouldSendMotionToInputFilterLocked(args)) {
+mLock.unlock();
+MotionEvent event;
+event.initialize(args->deviceId, args->source, args->action, args->flags,
+args->edgeFlags, args->metaState, args->buttonState, 0, 0,
+args->xPrecision, args->yPrecision,
+args->downTime, args->eventTime,
+args->pointerCount, args->pointerProperties, args->pointerCoords);
+policyFlags |= POLICY_FLAG_FILTERED;
+if (!mPolicy->filterInputEvent(&event, policyFlags)) {
+return; // event was consumed by the filter
+}
+mLock.lock();
+}
+// Just enqueue a new motion event.
+MotionEntry* newEntry = new MotionEntry(args->eventTime,
+args->deviceId, args->source, policyFlags,
+args->action, args->flags, args->metaState, args->buttonState,
+args->edgeFlags, args->xPrecision, args->yPrecision, args->downTime,
+args->displayId,
+args->pointerCount, args->pointerProperties, args->pointerCoords);
+needWake = enqueueInboundEventLocked(newEntry);
+mLock.unlock();
+} // release lock
+if (needWake) {
+mLooper->wake();
+}
+}
+bool InputDispatcher::shouldSendMotionToInputFilterLocked(const NotifyMotionArgs* args) {
+// TODO: support sending secondary display events to input filter
+return mInputFilterEnabled && isMainDisplay(args->displayId);
+}
+void InputDispatcher::notifySwitch(const NotifySwitchArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("notifySwitch - eventTime=%lld, policyFlags=0x%x, switchValues=0x%08x, switchMask=0x%08x",
+args->eventTime, args->policyFlags,
+args->switchValues, args->switchMask);
+#endif
+uint32_t policyFlags = args->policyFlags;
+policyFlags |= POLICY_FLAG_TRUSTED;
+mPolicy->notifySwitch(args->eventTime,
+args->switchValues, args->switchMask, policyFlags);
+}
+void InputDispatcher::notifyDeviceReset(const NotifyDeviceResetArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("notifyDeviceReset - eventTime=%lld, deviceId=%d",
+args->eventTime, args->deviceId);
+#endif
+bool needWake;
+{ // acquire lock
+AutoMutex _l(mLock);
+DeviceResetEntry* newEntry = new DeviceResetEntry(args->eventTime, args->deviceId);
+needWake = enqueueInboundEventLocked(newEntry);
+} // release lock
+if (needWake) {
+mLooper->wake();
+}
+}
+int32_t InputDispatcher::injectInputEvent(const InputEvent* event,
+int32_t injectorPid, int32_t injectorUid, int32_t syncMode, int32_t timeoutMillis,
+uint32_t policyFlags) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ALOGD("injectInputEvent - eventType=%d, injectorPid=%d, injectorUid=%d, "
+"syncMode=%d, timeoutMillis=%d, policyFlags=0x%08x",
+event->getType(), injectorPid, injectorUid, syncMode, timeoutMillis, policyFlags);
+#endif
+nsecs_t endTime = now() + milliseconds_to_nanoseconds(timeoutMillis);
+policyFlags |= POLICY_FLAG_INJECTED;
+if (hasInjectionPermission(injectorPid, injectorUid)) {
+policyFlags |= POLICY_FLAG_TRUSTED;
+}
+EventEntry* firstInjectedEntry;
+EventEntry* lastInjectedEntry;
+switch (event->getType()) {
+case AINPUT_EVENT_TYPE_KEY: {
+const KeyEvent* keyEvent = static_cast<const KeyEvent*>(event);
+int32_t action = keyEvent->getAction();
+if (! validateKeyEvent(action)) {
+return INPUT_EVENT_INJECTION_FAILED;
+}
+int32_t flags = keyEvent->getFlags();
+if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) {
+policyFlags |= POLICY_FLAG_VIRTUAL;
+}
+if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+mPolicy->interceptKeyBeforeQueueing(keyEvent, /*byref*/ policyFlags);
+}
+if (policyFlags & POLICY_FLAG_WOKE_HERE) {
+flags |= AKEY_EVENT_FLAG_WOKE_HERE;
+}
+mLock.lock();
+firstInjectedEntry = new KeyEntry(keyEvent->getEventTime(),
+keyEvent->getDeviceId(), keyEvent->getSource(),
+policyFlags, action, flags,
+keyEvent->getKeyCode(), keyEvent->getScanCode(), keyEvent->getMetaState(),
+keyEvent->getRepeatCount(), keyEvent->getDownTime());
+lastInjectedEntry = firstInjectedEntry;
+break;
+}
+case AINPUT_EVENT_TYPE_MOTION: {
+const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event);
+int32_t displayId = ADISPLAY_ID_DEFAULT;
+int32_t action = motionEvent->getAction();
+size_t pointerCount = motionEvent->getPointerCount();
+const PointerProperties* pointerProperties = motionEvent->getPointerProperties();
+if (! validateMotionEvent(action, pointerCount, pointerProperties)) {
+return INPUT_EVENT_INJECTION_FAILED;
+}
+if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+nsecs_t eventTime = motionEvent->getEventTime();
+mPolicy->interceptMotionBeforeQueueing(eventTime, /*byref*/ policyFlags);
+}
+mLock.lock();
+const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes();
+const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords();
+firstInjectedEntry = new MotionEntry(*sampleEventTimes,
+motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+action, motionEvent->getFlags(),
+motionEvent->getMetaState(), motionEvent->getButtonState(),
+motionEvent->getEdgeFlags(),
+motionEvent->getXPrecision(), motionEvent->getYPrecision(),
+motionEvent->getDownTime(), displayId,
+uint32_t(pointerCount), pointerProperties, samplePointerCoords);
+lastInjectedEntry = firstInjectedEntry;
+for (size_t i = motionEvent->getHistorySize(); i > 0; i--) {
+sampleEventTimes += 1;
+samplePointerCoords += pointerCount;
+MotionEntry* nextInjectedEntry = new MotionEntry(*sampleEventTimes,
+motionEvent->getDeviceId(), motionEvent->getSource(), policyFlags,
+action, motionEvent->getFlags(),
+motionEvent->getMetaState(), motionEvent->getButtonState(),
+motionEvent->getEdgeFlags(),
+motionEvent->getXPrecision(), motionEvent->getYPrecision(),
+motionEvent->getDownTime(), displayId,
+uint32_t(pointerCount), pointerProperties, samplePointerCoords);
+lastInjectedEntry->next = nextInjectedEntry;
+lastInjectedEntry = nextInjectedEntry;
+}
+break;
+}
+default:
+ALOGW("Cannot inject event of type %d", event->getType());
+return INPUT_EVENT_INJECTION_FAILED;
+}
+InjectionState* injectionState = new InjectionState(injectorPid, injectorUid);
+if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) {
+injectionState->injectionIsAsync = true;
+}
+injectionState->refCount += 1;
+lastInjectedEntry->injectionState = injectionState;
+bool needWake = false;
+for (EventEntry* entry = firstInjectedEntry; entry != NULL; ) {
+EventEntry* nextEntry = entry->next;
+needWake |= enqueueInboundEventLocked(entry);
+entry = nextEntry;
+}
+mLock.unlock();
+if (needWake) {
+mLooper->wake();
+}
+int32_t injectionResult;
+{ // acquire lock
+AutoMutex _l(mLock);
+if (syncMode == INPUT_EVENT_INJECTION_SYNC_NONE) {
+injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+} else {
+for (;;) {
+injectionResult = injectionState->injectionResult;
+if (injectionResult != INPUT_EVENT_INJECTION_PENDING) {
+break;
+}
+nsecs_t remainingTimeout = endTime - now();
+if (remainingTimeout <= 0) {
+#if DEBUG_INJECTION
+ALOGD("injectInputEvent - Timed out waiting for injection result "
+"to become available.");
+#endif
+injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT;
+break;
+}
+mInjectionResultAvailableCondition.waitRelative(mLock, remainingTimeout);
+}
+if (injectionResult == INPUT_EVENT_INJECTION_SUCCEEDED
+&& syncMode == INPUT_EVENT_INJECTION_SYNC_WAIT_FOR_FINISHED) {
+while (injectionState->pendingForegroundDispatches != 0) {
+#if DEBUG_INJECTION
+ALOGD("injectInputEvent - Waiting for %d pending foreground dispatches.",
+injectionState->pendingForegroundDispatches);
+#endif
+nsecs_t remainingTimeout = endTime - now();
+if (remainingTimeout <= 0) {
+#if DEBUG_INJECTION
+ALOGD("injectInputEvent - Timed out waiting for pending foreground "
+"dispatches to finish.");
+#endif
+injectionResult = INPUT_EVENT_INJECTION_TIMED_OUT;
+break;
+}
+mInjectionSyncFinishedCondition.waitRelative(mLock, remainingTimeout);
+}
+}
+}
+injectionState->release();
+} // release lock
+#if DEBUG_INJECTION
+ALOGD("injectInputEvent - Finished with result %d.  "
+"injectorPid=%d, injectorUid=%d",
+injectionResult, injectorPid, injectorUid);
+#endif
+return injectionResult;
+}
+bool InputDispatcher::hasInjectionPermission(int32_t injectorPid, int32_t injectorUid) {
+return injectorUid == 0
+|| mPolicy->checkInjectEventsPermissionNonReentrant(injectorPid, injectorUid);
+}
+void InputDispatcher::setInjectionResultLocked(EventEntry* entry, int32_t injectionResult) {
+InjectionState* injectionState = entry->injectionState;
+if (injectionState) {
+#if DEBUG_INJECTION
+ALOGD("Setting input event injection result to %d.  "
+"injectorPid=%d, injectorUid=%d",
+injectionResult, injectionState->injectorPid, injectionState->injectorUid);
+#endif
+if (injectionState->injectionIsAsync
+&& !(entry->policyFlags & POLICY_FLAG_FILTERED)) {
+// Log the outcome since the injector did not wait for the injection result.
+switch (injectionResult) {
+case INPUT_EVENT_INJECTION_SUCCEEDED:
+ALOGV("Asynchronous input event injection succeeded.");
+break;
+case INPUT_EVENT_INJECTION_FAILED:
+ALOGW("Asynchronous input event injection failed.");
+break;
+case INPUT_EVENT_INJECTION_PERMISSION_DENIED:
+ALOGW("Asynchronous input event injection permission denied.");
+break;
+case INPUT_EVENT_INJECTION_TIMED_OUT:
+ALOGW("Asynchronous input event injection timed out.");
+break;
+}
+}
+injectionState->injectionResult = injectionResult;
+mInjectionResultAvailableCondition.broadcast();
+}
+}
+void InputDispatcher::incrementPendingForegroundDispatchesLocked(EventEntry* entry) {
+InjectionState* injectionState = entry->injectionState;
+if (injectionState) {
+injectionState->pendingForegroundDispatches += 1;
+}
+}
+void InputDispatcher::decrementPendingForegroundDispatchesLocked(EventEntry* entry) {
+InjectionState* injectionState = entry->injectionState;
+if (injectionState) {
+injectionState->pendingForegroundDispatches -= 1;
+if (injectionState->pendingForegroundDispatches == 0) {
+mInjectionSyncFinishedCondition.broadcast();
+}
+}
+}
+sp<InputWindowHandle> InputDispatcher::getWindowHandleLocked(
+const sp<InputChannel>& inputChannel) const {
+size_t numWindows = mWindowHandles.size();
+for (size_t i = 0; i < numWindows; i++) {
+const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+if (windowHandle->getInputChannel() == inputChannel) {
+return windowHandle;
+}
+}
+return NULL;
+}
+bool InputDispatcher::hasWindowHandleLocked(
+const sp<InputWindowHandle>& windowHandle) const {
+size_t numWindows = mWindowHandles.size();
+for (size_t i = 0; i < numWindows; i++) {
+if (mWindowHandles.itemAt(i) == windowHandle) {
+return true;
+}
+}
+return false;
+}
+void InputDispatcher::setInputWindows(const Vector<sp<InputWindowHandle> >& inputWindowHandles) {
+#if DEBUG_FOCUS
+ALOGD("setInputWindows");
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+Vector<sp<InputWindowHandle> > oldWindowHandles = mWindowHandles;
+mWindowHandles = inputWindowHandles;
+sp<InputWindowHandle> newFocusedWindowHandle;
+bool foundHoveredWindow = false;
+for (size_t i = 0; i < mWindowHandles.size(); i++) {
+const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+if (!windowHandle->updateInfo() || windowHandle->getInputChannel() == NULL) {
+mWindowHandles.removeAt(i--);
+continue;
+}
+if (windowHandle->getInfo()->hasFocus) {
+newFocusedWindowHandle = windowHandle;
+}
+if (windowHandle == mLastHoverWindowHandle) {
+foundHoveredWindow = true;
+}
+}
+if (!foundHoveredWindow) {
+mLastHoverWindowHandle = NULL;
+}
+if (mFocusedWindowHandle != newFocusedWindowHandle) {
+if (mFocusedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+ALOGD("Focus left window: %s",
+mFocusedWindowHandle->getName().string());
+#endif
+sp<InputChannel> focusedInputChannel = mFocusedWindowHandle->getInputChannel();
+if (focusedInputChannel != NULL) {
+CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS,
+"focus left window");
+synthesizeCancelationEventsForInputChannelLocked(
+focusedInputChannel, options);
+}
+}
+if (newFocusedWindowHandle != NULL) {
+#if DEBUG_FOCUS
+ALOGD("Focus entered window: %s",
+newFocusedWindowHandle->getName().string());
+#endif
+}
+mFocusedWindowHandle = newFocusedWindowHandle;
+}
+for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+TouchedWindow& touchedWindow = mTouchState.windows.editItemAt(i);
+if (!hasWindowHandleLocked(touchedWindow.windowHandle)) {
+#if DEBUG_FOCUS
+ALOGD("Touched window was removed: %s",
+touchedWindow.windowHandle->getName().string());
+#endif
+sp<InputChannel> touchedInputChannel =
+touchedWindow.windowHandle->getInputChannel();
+if (touchedInputChannel != NULL) {
+CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+"touched window was removed");
+synthesizeCancelationEventsForInputChannelLocked(
+touchedInputChannel, options);
+}
+mTouchState.windows.removeAt(i--);
+}
+}
+// Release information for windows that are no longer present.
+// This ensures that unused input channels are released promptly.
+// Otherwise, they might stick around until the window handle is destroyed
+// which might not happen until the next GC.
+for (size_t i = 0; i < oldWindowHandles.size(); i++) {
+const sp<InputWindowHandle>& oldWindowHandle = oldWindowHandles.itemAt(i);
+if (!hasWindowHandleLocked(oldWindowHandle)) {
+#if DEBUG_FOCUS
+ALOGD("Window went away: %s", oldWindowHandle->getName().string());
+#endif
+oldWindowHandle->releaseInfo();
+}
+}
+} // release lock
+// Wake up poll loop since it may need to make new input dispatching choices.
+mLooper->wake();
+}
+void InputDispatcher::setFocusedApplication(
+const sp<InputApplicationHandle>& inputApplicationHandle) {
+#if DEBUG_FOCUS
+ALOGD("setFocusedApplication");
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+if (inputApplicationHandle != NULL && inputApplicationHandle->updateInfo()) {
+if (mFocusedApplicationHandle != inputApplicationHandle) {
+if (mFocusedApplicationHandle != NULL) {
+resetANRTimeoutsLocked();
+mFocusedApplicationHandle->releaseInfo();
+}
+mFocusedApplicationHandle = inputApplicationHandle;
+}
+} else if (mFocusedApplicationHandle != NULL) {
+resetANRTimeoutsLocked();
+mFocusedApplicationHandle->releaseInfo();
+mFocusedApplicationHandle.clear();
+}
+#if DEBUG_FOCUS
+//logDispatchStateLocked();
+#endif
+} // release lock
+// Wake up poll loop since it may need to make new input dispatching choices.
+mLooper->wake();
+}
+void InputDispatcher::setInputDispatchMode(bool enabled, bool frozen) {
+#if DEBUG_FOCUS
+ALOGD("setInputDispatchMode: enabled=%d, frozen=%d", enabled, frozen);
+#endif
+bool changed;
+{ // acquire lock
+AutoMutex _l(mLock);
+if (mDispatchEnabled != enabled || mDispatchFrozen != frozen) {
+if (mDispatchFrozen && !frozen) {
+resetANRTimeoutsLocked();
+}
+if (mDispatchEnabled && !enabled) {
+resetAndDropEverythingLocked("dispatcher is being disabled");
+}
+mDispatchEnabled = enabled;
+mDispatchFrozen = frozen;
+changed = true;
+} else {
+changed = false;
+}
+#if DEBUG_FOCUS
+//logDispatchStateLocked();
+#endif
+} // release lock
+if (changed) {
+// Wake up poll loop since it may need to make new input dispatching choices.
+mLooper->wake();
+}
+}
+void InputDispatcher::setInputFilterEnabled(bool enabled) {
+#if DEBUG_FOCUS
+ALOGD("setInputFilterEnabled: enabled=%d", enabled);
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+if (mInputFilterEnabled == enabled) {
+return;
+}
+mInputFilterEnabled = enabled;
+resetAndDropEverythingLocked("input filter is being enabled or disabled");
+} // release lock
+// Wake up poll loop since there might be work to do to drop everything.
+mLooper->wake();
+}
+bool InputDispatcher::transferTouchFocus(const sp<InputChannel>& fromChannel,
+const sp<InputChannel>& toChannel) {
+#if DEBUG_FOCUS
+ALOGD("transferTouchFocus: fromChannel=%s, toChannel=%s",
+fromChannel->getName().string(), toChannel->getName().string());
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+sp<InputWindowHandle> fromWindowHandle = getWindowHandleLocked(fromChannel);
+sp<InputWindowHandle> toWindowHandle = getWindowHandleLocked(toChannel);
+if (fromWindowHandle == NULL || toWindowHandle == NULL) {
+#if DEBUG_FOCUS
+ALOGD("Cannot transfer focus because from or to window not found.");
+#endif
+return false;
+}
+if (fromWindowHandle == toWindowHandle) {
+#if DEBUG_FOCUS
+ALOGD("Trivial transfer to same window.");
+#endif
+return true;
+}
+if (fromWindowHandle->getInfo()->displayId != toWindowHandle->getInfo()->displayId) {
+#if DEBUG_FOCUS
+ALOGD("Cannot transfer focus because windows are on different displays.");
+#endif
+return false;
+}
+bool found = false;
+for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTouchState.windows[i];
+if (touchedWindow.windowHandle == fromWindowHandle) {
+int32_t oldTargetFlags = touchedWindow.targetFlags;
+BitSet32 pointerIds = touchedWindow.pointerIds;
+mTouchState.windows.removeAt(i);
+int32_t newTargetFlags = oldTargetFlags
+& (InputTarget::FLAG_FOREGROUND
+| InputTarget::FLAG_SPLIT | InputTarget::FLAG_DISPATCH_AS_IS);
+mTouchState.addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds);
+found = true;
+break;
+}
+}
+if (! found) {
+#if DEBUG_FOCUS
+ALOGD("Focus transfer failed because from window did not have focus.");
+#endif
+return false;
+}
+ssize_t fromConnectionIndex = getConnectionIndexLocked(fromChannel);
+ssize_t toConnectionIndex = getConnectionIndexLocked(toChannel);
+if (fromConnectionIndex >= 0 && toConnectionIndex >= 0) {
+sp<Connection> fromConnection = mConnectionsByFd.valueAt(fromConnectionIndex);
+sp<Connection> toConnection = mConnectionsByFd.valueAt(toConnectionIndex);
+fromConnection->inputState.copyPointerStateTo(toConnection->inputState);
+CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+"transferring touch focus from this window to another window");
+synthesizeCancelationEventsForConnectionLocked(fromConnection, options);
+}
+#if DEBUG_FOCUS
+logDispatchStateLocked();
+#endif
+} // release lock
+// Wake up poll loop since it may need to make new input dispatching choices.
+mLooper->wake();
+return true;
+}
+void InputDispatcher::resetAndDropEverythingLocked(const char* reason) {
+#if DEBUG_FOCUS
+ALOGD("Resetting and dropping all events (%s).", reason);
+#endif
+CancelationOptions options(CancelationOptions::CANCEL_ALL_EVENTS, reason);
+synthesizeCancelationEventsForAllConnectionsLocked(options);
+resetKeyRepeatLocked();
+releasePendingEventLocked();
+drainInboundQueueLocked();
+resetANRTimeoutsLocked();
+mTouchState.reset();
+mLastHoverWindowHandle.clear();
+}
+void InputDispatcher::logDispatchStateLocked() {
+String8 dump;
+dumpDispatchStateLocked(dump);
+char* text = dump.lockBuffer(dump.size());
+char* start = text;
+while (*start != '\0') {
+char* end = strchr(start, '\n');
+if (*end == '\n') {
+*(end++) = '\0';
+}
+ALOGD("%s", start);
+start = end;
+}
+}
+void InputDispatcher::dumpDispatchStateLocked(String8& dump) {
+dump.appendFormat(INDENT "DispatchEnabled: %d\n", mDispatchEnabled);
+dump.appendFormat(INDENT "DispatchFrozen: %d\n", mDispatchFrozen);
+if (mFocusedApplicationHandle != NULL) {
+dump.appendFormat(INDENT "FocusedApplication: name='%s', dispatchingTimeout=%0.3fms\n",
+mFocusedApplicationHandle->getName().string(),
+mFocusedApplicationHandle->getDispatchingTimeout(
+DEFAULT_INPUT_DISPATCHING_TIMEOUT) / 1000000.0);
+} else {
+dump.append(INDENT "FocusedApplication: <null>\n");
+}
+dump.appendFormat(INDENT "FocusedWindow: name='%s'\n",
+mFocusedWindowHandle != NULL ? mFocusedWindowHandle->getName().string() : "<null>");
+dump.appendFormat(INDENT "TouchDown: %s\n", toString(mTouchState.down));
+dump.appendFormat(INDENT "TouchSplit: %s\n", toString(mTouchState.split));
+dump.appendFormat(INDENT "TouchDeviceId: %d\n", mTouchState.deviceId);
+dump.appendFormat(INDENT "TouchSource: 0x%08x\n", mTouchState.source);
+dump.appendFormat(INDENT "TouchDisplayId: %d\n", mTouchState.displayId);
+if (!mTouchState.windows.isEmpty()) {
+dump.append(INDENT "TouchedWindows:\n");
+for (size_t i = 0; i < mTouchState.windows.size(); i++) {
+const TouchedWindow& touchedWindow = mTouchState.windows[i];
+dump.appendFormat(INDENT2 "%d: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n",
+i, touchedWindow.windowHandle->getName().string(),
+touchedWindow.pointerIds.value,
+touchedWindow.targetFlags);
+}
+} else {
+dump.append(INDENT "TouchedWindows: <none>\n");
+}
+if (!mWindowHandles.isEmpty()) {
+dump.append(INDENT "Windows:\n");
+for (size_t i = 0; i < mWindowHandles.size(); i++) {
+const sp<InputWindowHandle>& windowHandle = mWindowHandles.itemAt(i);
+const InputWindowInfo* windowInfo = windowHandle->getInfo();
+dump.appendFormat(INDENT2 "%d: name='%s', displayId=%d, "
+"paused=%s, hasFocus=%s, hasWallpaper=%s, "
+"visible=%s, canReceiveKeys=%s, flags=0x%08x, type=0x%08x, layer=%d, "
+"frame=[%d,%d][%d,%d], scale=%f, "
+"touchableRegion=",
+i, windowInfo->name.string(), windowInfo->displayId,
+toString(windowInfo->paused),
+toString(windowInfo->hasFocus),
+toString(windowInfo->hasWallpaper),
+toString(windowInfo->visible),
+toString(windowInfo->canReceiveKeys),
+windowInfo->layoutParamsFlags, windowInfo->layoutParamsType,
+windowInfo->layer,
+windowInfo->frameLeft, windowInfo->frameTop,
+windowInfo->frameRight, windowInfo->frameBottom,
+windowInfo->scaleFactor);
+dumpRegion(dump, windowInfo->touchableRegion);
+dump.appendFormat(", inputFeatures=0x%08x", windowInfo->inputFeatures);
+dump.appendFormat(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
+windowInfo->ownerPid, windowInfo->ownerUid,
+windowInfo->dispatchingTimeout / 1000000.0);
+}
+} else {
+dump.append(INDENT "Windows: <none>\n");
+}
+if (!mMonitoringChannels.isEmpty()) {
+dump.append(INDENT "MonitoringChannels:\n");
+for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+const sp<InputChannel>& channel = mMonitoringChannels[i];
+dump.appendFormat(INDENT2 "%d: '%s'\n", i, channel->getName().string());
+}
+} else {
+dump.append(INDENT "MonitoringChannels: <none>\n");
+}
+nsecs_t currentTime = now();
+if (!mInboundQueue.isEmpty()) {
+dump.appendFormat(INDENT "InboundQueue: length=%u\n", mInboundQueue.count());
+for (EventEntry* entry = mInboundQueue.head; entry; entry = entry->next) {
+dump.append(INDENT2);
+entry->appendDescription(dump);
+dump.appendFormat(", age=%0.1fms\n",
+(currentTime - entry->eventTime) * 0.000001f);
+}
+} else {
+dump.append(INDENT "InboundQueue: <empty>\n");
+}
+if (!mConnectionsByFd.isEmpty()) {
+dump.append(INDENT "Connections:\n");
+for (size_t i = 0; i < mConnectionsByFd.size(); i++) {
+const sp<Connection>& connection = mConnectionsByFd.valueAt(i);
+dump.appendFormat(INDENT2 "%d: channelName='%s', windowName='%s', "
+"status=%s, monitor=%s, inputPublisherBlocked=%s\n",
+i, connection->getInputChannelName(), connection->getWindowName(),
+connection->getStatusLabel(), toString(connection->monitor),
+toString(connection->inputPublisherBlocked));
+if (!connection->outboundQueue.isEmpty()) {
+dump.appendFormat(INDENT3 "OutboundQueue: length=%u\n",
+connection->outboundQueue.count());
+for (DispatchEntry* entry = connection->outboundQueue.head; entry;
+entry = entry->next) {
+dump.append(INDENT4);
+entry->eventEntry->appendDescription(dump);
+dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, age=%0.1fms\n",
+entry->targetFlags, entry->resolvedAction,
+(currentTime - entry->eventEntry->eventTime) * 0.000001f);
+}
+} else {
+dump.append(INDENT3 "OutboundQueue: <empty>\n");
+}
+if (!connection->waitQueue.isEmpty()) {
+dump.appendFormat(INDENT3 "WaitQueue: length=%u\n",
+connection->waitQueue.count());
+for (DispatchEntry* entry = connection->waitQueue.head; entry;
+entry = entry->next) {
+dump.append(INDENT4);
+entry->eventEntry->appendDescription(dump);
+dump.appendFormat(", targetFlags=0x%08x, resolvedAction=%d, "
+"age=%0.1fms, wait=%0.1fms\n",
+entry->targetFlags, entry->resolvedAction,
+(currentTime - entry->eventEntry->eventTime) * 0.000001f,
+(currentTime - entry->deliveryTime) * 0.000001f);
+}
+} else {
+dump.append(INDENT3 "WaitQueue: <empty>\n");
+}
+}
+} else {
+dump.append(INDENT "Connections: <none>\n");
+}
+if (isAppSwitchPendingLocked()) {
+dump.appendFormat(INDENT "AppSwitch: pending, due in %0.1fms\n",
+(mAppSwitchDueTime - now()) / 1000000.0);
+} else {
+dump.append(INDENT "AppSwitch: not pending\n");
+}
+dump.append(INDENT "Configuration:\n");
+dump.appendFormat(INDENT2 "KeyRepeatDelay: %0.1fms\n",
+mConfig.keyRepeatDelay * 0.000001f);
+dump.appendFormat(INDENT2 "KeyRepeatTimeout: %0.1fms\n",
+mConfig.keyRepeatTimeout * 0.000001f);
+}
+status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel,
+const sp<InputWindowHandle>& inputWindowHandle, bool monitor) {
+#if DEBUG_REGISTRATION
+ALOGD("channel '%s' ~ registerInputChannel - monitor=%s", inputChannel->getName().string(),
+toString(monitor));
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+if (getConnectionIndexLocked(inputChannel) >= 0) {
+ALOGW("Attempted to register already registered input channel '%s'",
+inputChannel->getName().string());
+return BAD_VALUE;
+}
+sp<Connection> connection = new Connection(inputChannel, inputWindowHandle, monitor);
+int fd = inputChannel->getFd();
+mConnectionsByFd.add(fd, connection);
+if (monitor) {
+mMonitoringChannels.push(inputChannel);
+}
+mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this);
+} // release lock
+// Wake the looper because some connections have changed.
+mLooper->wake();
+return OK;
+}
+status_t InputDispatcher::unregisterInputChannel(const sp<InputChannel>& inputChannel) {
+#if DEBUG_REGISTRATION
+ALOGD("channel '%s' ~ unregisterInputChannel", inputChannel->getName().string());
+#endif
+{ // acquire lock
+AutoMutex _l(mLock);
+status_t status = unregisterInputChannelLocked(inputChannel, false /*notify*/);
+if (status) {
+return status;
+}
+} // release lock
+// Wake the poll loop because removing the connection may have changed the current
+// synchronization state.
+mLooper->wake();
+return OK;
+}
+status_t InputDispatcher::unregisterInputChannelLocked(const sp<InputChannel>& inputChannel,
+bool notify) {
+ssize_t connectionIndex = getConnectionIndexLocked(inputChannel);
+if (connectionIndex < 0) {
+ALOGW("Attempted to unregister already unregistered input channel '%s'",
+inputChannel->getName().string());
+return BAD_VALUE;
+}
+sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+mConnectionsByFd.removeItemsAt(connectionIndex);
+if (connection->monitor) {
+removeMonitorChannelLocked(inputChannel);
+}
+mLooper->removeFd(inputChannel->getFd());
+nsecs_t currentTime = now();
+abortBrokenDispatchCycleLocked(currentTime, connection, notify);
+connection->status = Connection::STATUS_ZOMBIE;
+return OK;
+}
+void InputDispatcher::removeMonitorChannelLocked(const sp<InputChannel>& inputChannel) {
+for (size_t i = 0; i < mMonitoringChannels.size(); i++) {
+if (mMonitoringChannels[i] == inputChannel) {
+mMonitoringChannels.removeAt(i);
+break;
+}
+}
+}
+ssize_t InputDispatcher::getConnectionIndexLocked(const sp<InputChannel>& inputChannel) {
+ssize_t connectionIndex = mConnectionsByFd.indexOfKey(inputChannel->getFd());
+if (connectionIndex >= 0) {
+sp<Connection> connection = mConnectionsByFd.valueAt(connectionIndex);
+if (connection->inputChannel.get() == inputChannel.get()) {
+return connectionIndex;
+}
+}
+return -1;
+}
+void InputDispatcher::onDispatchCycleFinishedLocked(
+nsecs_t currentTime, const sp<Connection>& connection, uint32_t seq, bool handled) {
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doDispatchCycleFinishedLockedInterruptible);
+commandEntry->connection = connection;
+commandEntry->eventTime = currentTime;
+commandEntry->seq = seq;
+commandEntry->handled = handled;
+}
+void InputDispatcher::onDispatchCycleBrokenLocked(
+nsecs_t currentTime, const sp<Connection>& connection) {
+ALOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!",
+connection->getInputChannelName());
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible);
+commandEntry->connection = connection;
+}
+void InputDispatcher::onANRLocked(
+nsecs_t currentTime, const sp<InputApplicationHandle>& applicationHandle,
+const sp<InputWindowHandle>& windowHandle,
+nsecs_t eventTime, nsecs_t waitStartTime, const char* reason) {
+float dispatchLatency = (currentTime - eventTime) * 0.000001f;
+float waitDuration = (currentTime - waitStartTime) * 0.000001f;
+ALOGI("Application is not responding: %s.  "
+"It has been %0.1fms since event, %0.1fms since wait started.  Reason: %s",
+getApplicationWindowLabelLocked(applicationHandle, windowHandle).string(),
+dispatchLatency, waitDuration, reason);
+// Capture a record of the InputDispatcher state at the time of the ANR.
+time_t t = time(NULL);
+struct tm tm;
+localtime_r(&t, &tm);
+char timestr[64];
+strftime(timestr, sizeof(timestr), "%F %T", &tm);
+mLastANRState.clear();
+mLastANRState.append(INDENT "ANR:\n");
+mLastANRState.appendFormat(INDENT2 "Time: %s\n", timestr);
+mLastANRState.appendFormat(INDENT2 "Window: %s\n",
+getApplicationWindowLabelLocked(applicationHandle, windowHandle).string());
+mLastANRState.appendFormat(INDENT2 "DispatchLatency: %0.1fms\n", dispatchLatency);
+mLastANRState.appendFormat(INDENT2 "WaitDuration: %0.1fms\n", waitDuration);
+mLastANRState.appendFormat(INDENT2 "Reason: %s\n", reason);
+dumpDispatchStateLocked(mLastANRState);
+CommandEntry* commandEntry = postCommandLocked(
+& InputDispatcher::doNotifyANRLockedInterruptible);
+commandEntry->inputApplicationHandle = applicationHandle;
+commandEntry->inputWindowHandle = windowHandle;
+}
+void InputDispatcher::doNotifyConfigurationChangedInterruptible(
+CommandEntry* commandEntry) {
+mLock.unlock();
+mPolicy->notifyConfigurationChanged(commandEntry->eventTime);
+mLock.lock();
+}
+void InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible(
+CommandEntry* commandEntry) {
+sp<Connection> connection = commandEntry->connection;
+if (connection->status != Connection::STATUS_ZOMBIE) {
+mLock.unlock();
+mPolicy->notifyInputChannelBroken(connection->inputWindowHandle);
+mLock.lock();
+}
+}
+void InputDispatcher::doNotifyANRLockedInterruptible(
+CommandEntry* commandEntry) {
+mLock.unlock();
+nsecs_t newTimeout = mPolicy->notifyANR(
+commandEntry->inputApplicationHandle, commandEntry->inputWindowHandle);
+mLock.lock();
+resumeAfterTargetsNotReadyTimeoutLocked(newTimeout,
+commandEntry->inputWindowHandle != NULL
+? commandEntry->inputWindowHandle->getInputChannel() : NULL);
+}
+void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible(
+CommandEntry* commandEntry) {
+KeyEntry* entry = commandEntry->keyEntry;
+KeyEvent event;
+initializeKeyEvent(&event, entry);
+mLock.unlock();
+nsecs_t delay = mPolicy->interceptKeyBeforeDispatching(commandEntry->inputWindowHandle,
+&event, entry->policyFlags);
+mLock.lock();
+if (delay < 0) {
+entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_SKIP;
+} else if (!delay) {
+entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_CONTINUE;
+} else {
+entry->interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_TRY_AGAIN_LATER;
+entry->interceptKeyWakeupTime = now() + delay;
+}
+entry->release();
+}
+void InputDispatcher::doDispatchCycleFinishedLockedInterruptible(
+CommandEntry* commandEntry) {
+sp<Connection> connection = commandEntry->connection;
+nsecs_t finishTime = commandEntry->eventTime;
+uint32_t seq = commandEntry->seq;
+bool handled = commandEntry->handled;
+// Handle post-event policy actions.
+DispatchEntry* dispatchEntry = connection->findWaitQueueEntry(seq);
+if (dispatchEntry) {
+nsecs_t eventDuration = finishTime - dispatchEntry->deliveryTime;
+if (eventDuration > SLOW_EVENT_PROCESSING_WARNING_TIMEOUT) {
+String8 msg;
+msg.appendFormat("Window '%s' spent %0.1fms processing the last input event: ",
+connection->getWindowName(), eventDuration * 0.000001f);
+dispatchEntry->eventEntry->appendDescription(msg);
+ALOGI("%s", msg.string());
+}
+bool restartEvent;
+if (dispatchEntry->eventEntry->type == EventEntry::TYPE_KEY) {
+KeyEntry* keyEntry = static_cast<KeyEntry*>(dispatchEntry->eventEntry);
+restartEvent = afterKeyEventLockedInterruptible(connection,
+dispatchEntry, keyEntry, handled);
+} else if (dispatchEntry->eventEntry->type == EventEntry::TYPE_MOTION) {
+MotionEntry* motionEntry = static_cast<MotionEntry*>(dispatchEntry->eventEntry);
+restartEvent = afterMotionEventLockedInterruptible(connection,
+dispatchEntry, motionEntry, handled);
+} else {
+restartEvent = false;
+}
+// Dequeue the event and start the next cycle.
+// Note that because the lock might have been released, it is possible that the
+// contents of the wait queue to have been drained, so we need to double-check
+// a few things.
+if (dispatchEntry == connection->findWaitQueueEntry(seq)) {
+connection->waitQueue.dequeue(dispatchEntry);
+traceWaitQueueLengthLocked(connection);
+if (restartEvent && connection->status == Connection::STATUS_NORMAL) {
+connection->outboundQueue.enqueueAtHead(dispatchEntry);
+traceOutboundQueueLengthLocked(connection);
+} else {
+releaseDispatchEntryLocked(dispatchEntry);
+}
+}
+// Start the next dispatch cycle for this connection.
+startDispatchCycleLocked(now(), connection);
+}
+}
+bool InputDispatcher::afterKeyEventLockedInterruptible(const sp<Connection>& connection,
+DispatchEntry* dispatchEntry, KeyEntry* keyEntry, bool handled) {
+if (!(keyEntry->flags & AKEY_EVENT_FLAG_FALLBACK)) {
+// Get the fallback key state.
+// Clear it out after dispatching the UP.
+int32_t originalKeyCode = keyEntry->keyCode;
+int32_t fallbackKeyCode = connection->inputState.getFallbackKey(originalKeyCode);
+if (keyEntry->action == AKEY_EVENT_ACTION_UP) {
+connection->inputState.removeFallbackKey(originalKeyCode);
+}
+if (handled || !dispatchEntry->hasForegroundTarget()) {
+// If the application handles the original key for which we previously
+// generated a fallback or if the window is not a foreground window,
+// then cancel the associated fallback key, if any.
+if (fallbackKeyCode != -1) {
+// Dispatch the unhandled key to the policy with the cancel flag.
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Unhandled key event: Asking policy to cancel fallback action.  "
+"keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount,
+keyEntry->policyFlags);
+#endif
+KeyEvent event;
+initializeKeyEvent(&event, keyEntry);
+event.setFlags(event.getFlags() | AKEY_EVENT_FLAG_CANCELED);
+mLock.unlock();
+mPolicy->dispatchUnhandledKey(connection->inputWindowHandle,
+&event, keyEntry->policyFlags, &event);
+mLock.lock();
+// Cancel the fallback key.
+if (fallbackKeyCode != AKEYCODE_UNKNOWN) {
+CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS,
+"application handled the original non-fallback key "
+"or is no longer a foreground target, "
+"canceling previously dispatched fallback key");
+options.keyCode = fallbackKeyCode;
+synthesizeCancelationEventsForConnectionLocked(connection, options);
+}
+connection->inputState.removeFallbackKey(originalKeyCode);
+}
+} else {
+// If the application did not handle a non-fallback key, first check
+// that we are in a good state to perform unhandled key event processing
+// Then ask the policy what to do with it.
+bool initialDown = keyEntry->action == AKEY_EVENT_ACTION_DOWN
+&& keyEntry->repeatCount == 0;
+if (fallbackKeyCode == -1 && !initialDown) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Unhandled key event: Skipping unhandled key event processing "
+"since this is not an initial down.  "
+"keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+originalKeyCode, keyEntry->action, keyEntry->repeatCount,
+keyEntry->policyFlags);
+#endif
+return false;
+}
+// Dispatch the unhandled key to the policy.
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Unhandled key event: Asking policy to perform fallback action.  "
+"keyCode=%d, action=%d, repeatCount=%d, policyFlags=0x%08x",
+keyEntry->keyCode, keyEntry->action, keyEntry->repeatCount,
+keyEntry->policyFlags);
+#endif
+KeyEvent event;
+initializeKeyEvent(&event, keyEntry);
+mLock.unlock();
+bool fallback = mPolicy->dispatchUnhandledKey(connection->inputWindowHandle,
+&event, keyEntry->policyFlags, &event);
+mLock.lock();
+if (connection->status != Connection::STATUS_NORMAL) {
+connection->inputState.removeFallbackKey(originalKeyCode);
+return false;
+}
+// Latch the fallback keycode for this key on an initial down.
+// The fallback keycode cannot change at any other point in the lifecycle.
+if (initialDown) {
+if (fallback) {
+fallbackKeyCode = event.getKeyCode();
+} else {
+fallbackKeyCode = AKEYCODE_UNKNOWN;
+}
+connection->inputState.setFallbackKey(originalKeyCode, fallbackKeyCode);
+}
+ALOG_ASSERT(fallbackKeyCode != -1);
+// Cancel the fallback key if the policy decides not to send it anymore.
+// We will continue to dispatch the key to the policy but we will no
+// longer dispatch a fallback key to the application.
+if (fallbackKeyCode != AKEYCODE_UNKNOWN
+&& (!fallback || fallbackKeyCode != event.getKeyCode())) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+if (fallback) {
+ALOGD("Unhandled key event: Policy requested to send key %d"
+"as a fallback for %d, but on the DOWN it had requested "
+"to send %d instead.  Fallback canceled.",
+event.getKeyCode(), originalKeyCode, fallbackKeyCode);
+} else {
+ALOGD("Unhandled key event: Policy did not request fallback for %d, "
+"but on the DOWN it had requested to send %d.  "
+"Fallback canceled.",
+originalKeyCode, fallbackKeyCode);
+}
+#endif
+CancelationOptions options(CancelationOptions::CANCEL_FALLBACK_EVENTS,
+"canceling fallback, policy no longer desires it");
+options.keyCode = fallbackKeyCode;
+synthesizeCancelationEventsForConnectionLocked(connection, options);
+fallback = false;
+fallbackKeyCode = AKEYCODE_UNKNOWN;
+if (keyEntry->action != AKEY_EVENT_ACTION_UP) {
+connection->inputState.setFallbackKey(originalKeyCode,
+fallbackKeyCode);
+}
+}
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+{
+String8 msg;
+const KeyedVector<int32_t, int32_t>& fallbackKeys =
+connection->inputState.getFallbackKeys();
+for (size_t i = 0; i < fallbackKeys.size(); i++) {
+msg.appendFormat(", %d->%d", fallbackKeys.keyAt(i),
+fallbackKeys.valueAt(i));
+}
+ALOGD("Unhandled key event: %d currently tracked fallback keys%s.",
+fallbackKeys.size(), msg.string());
+}
+#endif
+if (fallback) {
+// Restart the dispatch cycle using the fallback key.
+keyEntry->eventTime = event.getEventTime();
+keyEntry->deviceId = event.getDeviceId();
+keyEntry->source = event.getSource();
+keyEntry->flags = event.getFlags() | AKEY_EVENT_FLAG_FALLBACK;
+keyEntry->keyCode = fallbackKeyCode;
+keyEntry->scanCode = event.getScanCode();
+keyEntry->metaState = event.getMetaState();
+keyEntry->repeatCount = event.getRepeatCount();
+keyEntry->downTime = event.getDownTime();
+keyEntry->syntheticRepeat = false;
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Unhandled key event: Dispatching fallback key.  "
+"originalKeyCode=%d, fallbackKeyCode=%d, fallbackMetaState=%08x",
+originalKeyCode, fallbackKeyCode, keyEntry->metaState);
+#endif
+return true; // restart the event
+} else {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Unhandled key event: No fallback key.");
+#endif
+}
+}
+}
+return false;
+}
+bool InputDispatcher::afterMotionEventLockedInterruptible(const sp<Connection>& connection,
+DispatchEntry* dispatchEntry, MotionEntry* motionEntry, bool handled) {
+return false;
+}
+void InputDispatcher::doPokeUserActivityLockedInterruptible(CommandEntry* commandEntry) {
+mLock.unlock();
+mPolicy->pokeUserActivity(commandEntry->eventTime, commandEntry->userActivityEventType);
+mLock.lock();
+}
+void InputDispatcher::initializeKeyEvent(KeyEvent* event, const KeyEntry* entry) {
+event->initialize(entry->deviceId, entry->source, entry->action, entry->flags,
+entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount,
+entry->downTime, entry->eventTime);
+}
+void InputDispatcher::updateDispatchStatisticsLocked(nsecs_t currentTime, const EventEntry* entry,
+int32_t injectionResult, nsecs_t timeSpentWaitingForApplication) {
+// TODO Write some statistics about how long we spend waiting.
+}
+void InputDispatcher::traceInboundQueueLengthLocked() {
+#ifdef HAVE_ANDROID_OS
+if (ATRACE_ENABLED()) {
+ATRACE_INT("iq", mInboundQueue.count());
+}
+#endif
+}
+void InputDispatcher::traceOutboundQueueLengthLocked(const sp<Connection>& connection) {
+#ifdef HAVE_ANDROID_OS
+if (ATRACE_ENABLED()) {
+char counterName[40];
+snprintf(counterName, sizeof(counterName), "oq:%s", connection->getWindowName());
+ATRACE_INT(counterName, connection->outboundQueue.count());
+}
+#endif
+}
+void InputDispatcher::traceWaitQueueLengthLocked(const sp<Connection>& connection) {
+#ifdef HAVE_ANDROID_OS
+if (ATRACE_ENABLED()) {
+char counterName[40];
+snprintf(counterName, sizeof(counterName), "wq:%s", connection->getWindowName());
+ATRACE_INT(counterName, connection->waitQueue.count());
+}
+#endif
+}
+void InputDispatcher::dump(String8& dump) {
+AutoMutex _l(mLock);
+dump.append("Input Dispatcher State:\n");
+dumpDispatchStateLocked(dump);
+if (!mLastANRState.isEmpty()) {
+dump.append("\nInput Dispatcher State at time of last ANR:\n");
+dump.append(mLastANRState);
+}
+}
+void InputDispatcher::monitor() {
+// Acquire and release the lock to ensure that the dispatcher has not deadlocked.
+mLock.lock();
+mLooper->wake();
+mDispatcherIsAliveCondition.wait(mLock);
+mLock.unlock();
+}
+// --- InputDispatcher::Queue ---
+template <typename T>
+uint32_t InputDispatcher::Queue<T>::count() const {
+uint32_t result = 0;
+for (const T* entry = head; entry; entry = entry->next) {
+result += 1;
+}
+return result;
+}
+// --- InputDispatcher::InjectionState ---
+InputDispatcher::InjectionState::InjectionState(int32_t injectorPid, int32_t injectorUid) :
+refCount(1),
+injectorPid(injectorPid), injectorUid(injectorUid),
+injectionResult(INPUT_EVENT_INJECTION_PENDING), injectionIsAsync(false),
+pendingForegroundDispatches(0) {
+}
+InputDispatcher::InjectionState::~InjectionState() {
+}
+void InputDispatcher::InjectionState::release() {
+refCount -= 1;
+if (refCount == 0) {
+delete this;
+} else {
+ALOG_ASSERT(refCount > 0);
+}
+}
+// --- InputDispatcher::EventEntry ---
+InputDispatcher::EventEntry::EventEntry(int32_t type, nsecs_t eventTime, uint32_t policyFlags) :
+refCount(1), type(type), eventTime(eventTime), policyFlags(policyFlags),
+injectionState(NULL), dispatchInProgress(false) {
+}
+InputDispatcher::EventEntry::~EventEntry() {
+releaseInjectionState();
+}
+void InputDispatcher::EventEntry::release() {
+refCount -= 1;
+if (refCount == 0) {
+delete this;
+} else {
+ALOG_ASSERT(refCount > 0);
+}
+}
+void InputDispatcher::EventEntry::releaseInjectionState() {
+if (injectionState) {
+injectionState->release();
+injectionState = NULL;
+}
+}
+// --- InputDispatcher::ConfigurationChangedEntry ---
+InputDispatcher::ConfigurationChangedEntry::ConfigurationChangedEntry(nsecs_t eventTime) :
+EventEntry(TYPE_CONFIGURATION_CHANGED, eventTime, 0) {
+}
+InputDispatcher::ConfigurationChangedEntry::~ConfigurationChangedEntry() {
+}
+void InputDispatcher::ConfigurationChangedEntry::appendDescription(String8& msg) const {
+msg.append("ConfigurationChangedEvent()");
+}
+// --- InputDispatcher::DeviceResetEntry ---
+InputDispatcher::DeviceResetEntry::DeviceResetEntry(nsecs_t eventTime, int32_t deviceId) :
+EventEntry(TYPE_DEVICE_RESET, eventTime, 0),
+deviceId(deviceId) {
+}
+InputDispatcher::DeviceResetEntry::~DeviceResetEntry() {
+}
+void InputDispatcher::DeviceResetEntry::appendDescription(String8& msg) const {
+msg.appendFormat("DeviceResetEvent(deviceId=%d)", deviceId);
+}
+// --- InputDispatcher::KeyEntry ---
+InputDispatcher::KeyEntry::KeyEntry(nsecs_t eventTime,
+int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action,
+int32_t flags, int32_t keyCode, int32_t scanCode, int32_t metaState,
+int32_t repeatCount, nsecs_t downTime) :
+EventEntry(TYPE_KEY, eventTime, policyFlags),
+deviceId(deviceId), source(source), action(action), flags(flags),
+keyCode(keyCode), scanCode(scanCode), metaState(metaState),
+repeatCount(repeatCount), downTime(downTime),
+syntheticRepeat(false), interceptKeyResult(KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN),
+interceptKeyWakeupTime(0) {
+}
+InputDispatcher::KeyEntry::~KeyEntry() {
+}
+void InputDispatcher::KeyEntry::appendDescription(String8& msg) const {
+msg.appendFormat("KeyEvent(action=%d, deviceId=%d, source=0x%08x)",
+action, deviceId, source);
+}
+void InputDispatcher::KeyEntry::recycle() {
+releaseInjectionState();
+dispatchInProgress = false;
+syntheticRepeat = false;
+interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN;
+interceptKeyWakeupTime = 0;
+}
+// --- InputDispatcher::MotionEntry ---
+InputDispatcher::MotionEntry::MotionEntry(nsecs_t eventTime,
+int32_t deviceId, uint32_t source, uint32_t policyFlags, int32_t action, int32_t flags,
+int32_t metaState, int32_t buttonState,
+int32_t edgeFlags, float xPrecision, float yPrecision,
+nsecs_t downTime, int32_t displayId, uint32_t pointerCount,
+const PointerProperties* pointerProperties, const PointerCoords* pointerCoords) :
+EventEntry(TYPE_MOTION, eventTime, policyFlags),
+eventTime(eventTime),
+deviceId(deviceId), source(source), action(action), flags(flags),
+metaState(metaState), buttonState(buttonState), edgeFlags(edgeFlags),
+xPrecision(xPrecision), yPrecision(yPrecision),
+downTime(downTime), displayId(displayId), pointerCount(pointerCount) {
+for (uint32_t i = 0; i < pointerCount; i++) {
+this->pointerProperties[i].copyFrom(pointerProperties[i]);
+this->pointerCoords[i].copyFrom(pointerCoords[i]);
+}
+}
+InputDispatcher::MotionEntry::~MotionEntry() {
+}
+void InputDispatcher::MotionEntry::appendDescription(String8& msg) const {
+msg.appendFormat("MotionEvent(action=%d, deviceId=%d, source=0x%08x, displayId=%d)",
+action, deviceId, source, displayId);
+}
+// --- InputDispatcher::DispatchEntry ---
+volatile int32_t InputDispatcher::DispatchEntry::sNextSeqAtomic;
+InputDispatcher::DispatchEntry::DispatchEntry(EventEntry* eventEntry,
+int32_t targetFlags, float xOffset, float yOffset, float scaleFactor) :
+seq(nextSeq()),
+eventEntry(eventEntry), targetFlags(targetFlags),
+xOffset(xOffset), yOffset(yOffset), scaleFactor(scaleFactor),
+deliveryTime(0), resolvedAction(0), resolvedFlags(0) {
+eventEntry->refCount += 1;
+}
+InputDispatcher::DispatchEntry::~DispatchEntry() {
+eventEntry->release();
+}
+uint32_t InputDispatcher::DispatchEntry::nextSeq() {
+// Sequence number 0 is reserved and will never be returned.
+uint32_t seq;
+do {
+seq = android_atomic_inc(&sNextSeqAtomic);
+} while (!seq);
+return seq;
+}
+// --- InputDispatcher::InputState ---
+InputDispatcher::InputState::InputState() {
+}
+InputDispatcher::InputState::~InputState() {
+}
+bool InputDispatcher::InputState::isNeutral() const {
+return mKeyMementos.isEmpty() && mMotionMementos.isEmpty();
+}
+bool InputDispatcher::InputState::isHovering(int32_t deviceId, uint32_t source,
+int32_t displayId) const {
+for (size_t i = 0; i < mMotionMementos.size(); i++) {
+const MotionMemento& memento = mMotionMementos.itemAt(i);
+if (memento.deviceId == deviceId
+&& memento.source == source
+&& memento.displayId == displayId
+&& memento.hovering) {
+return true;
+}
+}
+return false;
+}
+bool InputDispatcher::InputState::trackKey(const KeyEntry* entry,
+int32_t action, int32_t flags) {
+switch (action) {
+case AKEY_EVENT_ACTION_UP: {
+if (entry->flags & AKEY_EVENT_FLAG_FALLBACK) {
+for (size_t i = 0; i < mFallbackKeys.size(); ) {
+if (mFallbackKeys.valueAt(i) == entry->keyCode) {
+mFallbackKeys.removeItemsAt(i);
+} else {
+i += 1;
+}
+}
+}
+ssize_t index = findKeyMemento(entry);
+if (index >= 0) {
+mKeyMementos.removeAt(index);
+return true;
+}
+/* FIXME: We can't just drop the key up event because that prevents creating
+* popup windows that are automatically shown when a key is held and then
+* dismissed when the key is released.  The problem is that the popup will
+* not have received the original key down, so the key up will be considered
+* to be inconsistent with its observed state.  We could perhaps handle this
+* by synthesizing a key down but that will cause other problems.
+*
+* So for now, allow inconsistent key up events to be dispatched.
+*
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Dropping inconsistent key up event: deviceId=%d, source=%08x, "
+"keyCode=%d, scanCode=%d",
+entry->deviceId, entry->source, entry->keyCode, entry->scanCode);
+#endif
+return false;
+*/
+return true;
+}
+case AKEY_EVENT_ACTION_DOWN: {
+ssize_t index = findKeyMemento(entry);
+if (index >= 0) {
+mKeyMementos.removeAt(index);
+}
+addKeyMemento(entry, flags);
+return true;
+}
+default:
+return true;
+}
+}
+bool InputDispatcher::InputState::trackMotion(const MotionEntry* entry,
+int32_t action, int32_t flags) {
+int32_t actionMasked = action & AMOTION_EVENT_ACTION_MASK;
+switch (actionMasked) {
+case AMOTION_EVENT_ACTION_UP:
+case AMOTION_EVENT_ACTION_CANCEL: {
+ssize_t index = findMotionMemento(entry, false /*hovering*/);
+if (index >= 0) {
+mMotionMementos.removeAt(index);
+return true;
+}
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, "
+"actionMasked=%d",
+entry->deviceId, entry->source, actionMasked);
+#endif
+return false;
+}
+case AMOTION_EVENT_ACTION_DOWN: {
+ssize_t index = findMotionMemento(entry, false /*hovering*/);
+if (index >= 0) {
+mMotionMementos.removeAt(index);
+}
+addMotionMemento(entry, flags, false /*hovering*/);
+return true;
+}
+case AMOTION_EVENT_ACTION_POINTER_UP:
+case AMOTION_EVENT_ACTION_POINTER_DOWN:
+case AMOTION_EVENT_ACTION_MOVE: {
+ssize_t index = findMotionMemento(entry, false /*hovering*/);
+if (index >= 0) {
+MotionMemento& memento = mMotionMementos.editItemAt(index);
+memento.setPointers(entry);
+return true;
+}
+if (actionMasked == AMOTION_EVENT_ACTION_MOVE
+&& (entry->source & (AINPUT_SOURCE_CLASS_JOYSTICK
+| AINPUT_SOURCE_CLASS_NAVIGATION))) {
+// Joysticks and trackballs can send MOVE events without corresponding DOWN or UP.
+return true;
+}
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Dropping inconsistent motion pointer up/down or move event: "
+"deviceId=%d, source=%08x, actionMasked=%d",
+entry->deviceId, entry->source, actionMasked);
+#endif
+return false;
+}
+case AMOTION_EVENT_ACTION_HOVER_EXIT: {
+ssize_t index = findMotionMemento(entry, true /*hovering*/);
+if (index >= 0) {
+mMotionMementos.removeAt(index);
+return true;
+}
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x",
+entry->deviceId, entry->source);
+#endif
+return false;
+}
+case AMOTION_EVENT_ACTION_HOVER_ENTER:
+case AMOTION_EVENT_ACTION_HOVER_MOVE: {
+ssize_t index = findMotionMemento(entry, true /*hovering*/);
+if (index >= 0) {
+mMotionMementos.removeAt(index);
+}
+addMotionMemento(entry, flags, true /*hovering*/);
+return true;
+}
+default:
+return true;
+}
+}
+ssize_t InputDispatcher::InputState::findKeyMemento(const KeyEntry* entry) const {
+for (size_t i = 0; i < mKeyMementos.size(); i++) {
+const KeyMemento& memento = mKeyMementos.itemAt(i);
+if (memento.deviceId == entry->deviceId
+&& memento.source == entry->source
+&& memento.keyCode == entry->keyCode
+&& memento.scanCode == entry->scanCode) {
+return i;
+}
+}
+return -1;
+}
+ssize_t InputDispatcher::InputState::findMotionMemento(const MotionEntry* entry,
+bool hovering) const {
+for (size_t i = 0; i < mMotionMementos.size(); i++) {
+const MotionMemento& memento = mMotionMementos.itemAt(i);
+if (memento.deviceId == entry->deviceId
+&& memento.source == entry->source
+&& memento.displayId == entry->displayId
+&& memento.hovering == hovering) {
+return i;
+}
+}
+return -1;
+}
+void InputDispatcher::InputState::addKeyMemento(const KeyEntry* entry, int32_t flags) {
+mKeyMementos.push();
+KeyMemento& memento = mKeyMementos.editTop();
+memento.deviceId = entry->deviceId;
+memento.source = entry->source;
+memento.keyCode = entry->keyCode;
+memento.scanCode = entry->scanCode;
+memento.metaState = entry->metaState;
+memento.flags = flags;
+memento.downTime = entry->downTime;
+memento.policyFlags = entry->policyFlags;
+}
+void InputDispatcher::InputState::addMotionMemento(const MotionEntry* entry,
+int32_t flags, bool hovering) {
+mMotionMementos.push();
+MotionMemento& memento = mMotionMementos.editTop();
+memento.deviceId = entry->deviceId;
+memento.source = entry->source;
+memento.flags = flags;
+memento.xPrecision = entry->xPrecision;
+memento.yPrecision = entry->yPrecision;
+memento.downTime = entry->downTime;
+memento.displayId = entry->displayId;
+memento.setPointers(entry);
+memento.hovering = hovering;
+memento.policyFlags = entry->policyFlags;
+}
+void InputDispatcher::InputState::MotionMemento::setPointers(const MotionEntry* entry) {
+pointerCount = entry->pointerCount;
+for (uint32_t i = 0; i < entry->pointerCount; i++) {
+pointerProperties[i].copyFrom(entry->pointerProperties[i]);
+pointerCoords[i].copyFrom(entry->pointerCoords[i]);
+}
+}
+void InputDispatcher::InputState::synthesizeCancelationEvents(nsecs_t currentTime,
+Vector<EventEntry*>& outEvents, const CancelationOptions& options) {
+for (size_t i = 0; i < mKeyMementos.size(); i++) {
+const KeyMemento& memento = mKeyMementos.itemAt(i);
+if (shouldCancelKey(memento, options)) {
+outEvents.push(new KeyEntry(currentTime,
+memento.deviceId, memento.source, memento.policyFlags,
+AKEY_EVENT_ACTION_UP, memento.flags | AKEY_EVENT_FLAG_CANCELED,
+memento.keyCode, memento.scanCode, memento.metaState, 0, memento.downTime));
+}
+}
+for (size_t i = 0; i < mMotionMementos.size(); i++) {
+const MotionMemento& memento = mMotionMementos.itemAt(i);
+if (shouldCancelMotion(memento, options)) {
+outEvents.push(new MotionEntry(currentTime,
+memento.deviceId, memento.source, memento.policyFlags,
+memento.hovering
+? AMOTION_EVENT_ACTION_HOVER_EXIT
+: AMOTION_EVENT_ACTION_CANCEL,
+memento.flags, 0, 0, 0,
+memento.xPrecision, memento.yPrecision, memento.downTime,
+memento.displayId,
+memento.pointerCount, memento.pointerProperties, memento.pointerCoords));
+}
+}
+}
+void InputDispatcher::InputState::clear() {
+mKeyMementos.clear();
+mMotionMementos.clear();
+mFallbackKeys.clear();
+}
+void InputDispatcher::InputState::copyPointerStateTo(InputState& other) const {
+for (size_t i = 0; i < mMotionMementos.size(); i++) {
+const MotionMemento& memento = mMotionMementos.itemAt(i);
+if (memento.source & AINPUT_SOURCE_CLASS_POINTER) {
+for (size_t j = 0; j < other.mMotionMementos.size(); ) {
+const MotionMemento& otherMemento = other.mMotionMementos.itemAt(j);
+if (memento.deviceId == otherMemento.deviceId
+&& memento.source == otherMemento.source
+&& memento.displayId == otherMemento.displayId) {
+other.mMotionMementos.removeAt(j);
+} else {
+j += 1;
+}
+}
+other.mMotionMementos.push(memento);
+}
+}
+}
+int32_t InputDispatcher::InputState::getFallbackKey(int32_t originalKeyCode) {
+ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode);
+return index >= 0 ? mFallbackKeys.valueAt(index) : -1;
+}
+void InputDispatcher::InputState::setFallbackKey(int32_t originalKeyCode,
+int32_t fallbackKeyCode) {
+ssize_t index = mFallbackKeys.indexOfKey(originalKeyCode);
+if (index >= 0) {
+mFallbackKeys.replaceValueAt(index, fallbackKeyCode);
+} else {
+mFallbackKeys.add(originalKeyCode, fallbackKeyCode);
+}
+}
+void InputDispatcher::InputState::removeFallbackKey(int32_t originalKeyCode) {
+mFallbackKeys.removeItem(originalKeyCode);
+}
+bool InputDispatcher::InputState::shouldCancelKey(const KeyMemento& memento,
+const CancelationOptions& options) {
+if (options.keyCode != -1 && memento.keyCode != options.keyCode) {
+return false;
+}
+if (options.deviceId != -1 && memento.deviceId != options.deviceId) {
+return false;
+}
+switch (options.mode) {
+case CancelationOptions::CANCEL_ALL_EVENTS:
+case CancelationOptions::CANCEL_NON_POINTER_EVENTS:
+return true;
+case CancelationOptions::CANCEL_FALLBACK_EVENTS:
+return memento.flags & AKEY_EVENT_FLAG_FALLBACK;
+default:
+return false;
+}
+}
+bool InputDispatcher::InputState::shouldCancelMotion(const MotionMemento& memento,
+const CancelationOptions& options) {
+if (options.deviceId != -1 && memento.deviceId != options.deviceId) {
+return false;
+}
+switch (options.mode) {
+case CancelationOptions::CANCEL_ALL_EVENTS:
+return true;
+case CancelationOptions::CANCEL_POINTER_EVENTS:
+return memento.source & AINPUT_SOURCE_CLASS_POINTER;
+case CancelationOptions::CANCEL_NON_POINTER_EVENTS:
+return !(memento.source & AINPUT_SOURCE_CLASS_POINTER);
+default:
+return false;
+}
+}
+// --- InputDispatcher::Connection ---
+InputDispatcher::Connection::Connection(const sp<InputChannel>& inputChannel,
+const sp<InputWindowHandle>& inputWindowHandle, bool monitor) :
+status(STATUS_NORMAL), inputChannel(inputChannel), inputWindowHandle(inputWindowHandle),
+monitor(monitor),
+inputPublisher(inputChannel), inputPublisherBlocked(false) {
+}
+InputDispatcher::Connection::~Connection() {
+}
+const char* InputDispatcher::Connection::getWindowName() const {
+if (inputWindowHandle != NULL) {
+return inputWindowHandle->getName().string();
+}
+if (monitor) {
+return "monitor";
+}
+return "?";
+}
+const char* InputDispatcher::Connection::getStatusLabel() const {
+switch (status) {
+case STATUS_NORMAL:
+return "NORMAL";
+case STATUS_BROKEN:
+return "BROKEN";
+case STATUS_ZOMBIE:
+return "ZOMBIE";
+default:
+return "UNKNOWN";
+}
+}
+InputDispatcher::DispatchEntry* InputDispatcher::Connection::findWaitQueueEntry(uint32_t seq) {
+for (DispatchEntry* entry = waitQueue.head; entry != NULL; entry = entry->next) {
+if (entry->seq == seq) {
+return entry;
+}
+}
+return NULL;
+}
+// --- InputDispatcher::CommandEntry ---
+InputDispatcher::CommandEntry::CommandEntry(Command command) :
+command(command), eventTime(0), keyEntry(NULL), userActivityEventType(0),
+seq(0), handled(false) {
+}
+InputDispatcher::CommandEntry::~CommandEntry() {
+}
+// --- InputDispatcher::TouchState ---
+InputDispatcher::TouchState::TouchState() :
+down(false), split(false), deviceId(-1), source(0), displayId(-1) {
+}
+InputDispatcher::TouchState::~TouchState() {
+}
+void InputDispatcher::TouchState::reset() {
+down = false;
+split = false;
+deviceId = -1;
+source = 0;
+displayId = -1;
+windows.clear();
+}
+void InputDispatcher::TouchState::copyFrom(const TouchState& other) {
+down = other.down;
+split = other.split;
+deviceId = other.deviceId;
+source = other.source;
+displayId = other.displayId;
+windows = other.windows;
+}
+void InputDispatcher::TouchState::addOrUpdateWindow(const sp<InputWindowHandle>& windowHandle,
+int32_t targetFlags, BitSet32 pointerIds) {
+if (targetFlags & InputTarget::FLAG_SPLIT) {
+split = true;
+}
+for (size_t i = 0; i < windows.size(); i++) {
+TouchedWindow& touchedWindow = windows.editItemAt(i);
+if (touchedWindow.windowHandle == windowHandle) {
+touchedWindow.targetFlags |= targetFlags;
+if (targetFlags & InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT) {
+touchedWindow.targetFlags &= ~InputTarget::FLAG_DISPATCH_AS_IS;
+}
+touchedWindow.pointerIds.value |= pointerIds.value;
+return;
+}
+}
+windows.push();
+TouchedWindow& touchedWindow = windows.editTop();
+touchedWindow.windowHandle = windowHandle;
+touchedWindow.targetFlags = targetFlags;
+touchedWindow.pointerIds = pointerIds;
+}
+void InputDispatcher::TouchState::removeWindow(const sp<InputWindowHandle>& windowHandle) {
+for (size_t i = 0; i < windows.size(); i++) {
+if (windows.itemAt(i).windowHandle == windowHandle) {
+windows.removeAt(i);
+return;
+}
+}
+}
+void InputDispatcher::TouchState::filterNonAsIsTouchWindows() {
+for (size_t i = 0 ; i < windows.size(); ) {
+TouchedWindow& window = windows.editItemAt(i);
+if (window.targetFlags & (InputTarget::FLAG_DISPATCH_AS_IS
+| InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER)) {
+window.targetFlags &= ~InputTarget::FLAG_DISPATCH_MASK;
+window.targetFlags |= InputTarget::FLAG_DISPATCH_AS_IS;
+i += 1;
+} else {
+windows.removeAt(i);
+}
+}
+}
+sp<InputWindowHandle> InputDispatcher::TouchState::getFirstForegroundWindowHandle() const {
+for (size_t i = 0; i < windows.size(); i++) {
+const TouchedWindow& window = windows.itemAt(i);
+if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
+return window.windowHandle;
+}
+}
+return NULL;
+}
+bool InputDispatcher::TouchState::isSlippery() const {
+// Must have exactly one foreground window.
+bool haveSlipperyForegroundWindow = false;
+for (size_t i = 0; i < windows.size(); i++) {
+const TouchedWindow& window = windows.itemAt(i);
+if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
+if (haveSlipperyForegroundWindow
+|| !(window.windowHandle->getInfo()->layoutParamsFlags
+& InputWindowInfo::FLAG_SLIPPERY)) {
+return false;
+}
+haveSlipperyForegroundWindow = true;
+}
+}
+return haveSlipperyForegroundWindow;
+}
+// --- InputDispatcherThread ---
+InputDispatcherThread::InputDispatcherThread(const sp<InputDispatcherInterface>& dispatcher) :
+Thread(/*canCallJava*/ true), mDispatcher(dispatcher) {
+}
+InputDispatcherThread::~InputDispatcherThread() {
+}
+bool InputDispatcherThread::threadLoop() {
+mDispatcher->dispatchOnce();
+return true;
+}
+} // namespace android

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comparison: widget/gonk/libui/InputDispatcher.cpp

widget/gonk/libui/InputDispatcher.cpp