Move InputDispatcher code into a folder.
Note this is an intermediate stage so that the following change won't
ruin git history. Should never let the HEAD be this commit.
Bug: 140139676
Test: Builds.
Change-Id: I263929e2d2dd17858eaea69121564335bcc2ef1c
diff --git a/services/inputflinger/dispatcher/InputDispatcher.cpp b/services/inputflinger/dispatcher/InputDispatcher.cpp
new file mode 100644
index 0000000..4b8c51b
--- /dev/null
+++ b/services/inputflinger/dispatcher/InputDispatcher.cpp
@@ -0,0 +1,5359 @@
+/*
+ * 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
+
+// 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 <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <stddef.h>
+#include <time.h>
+#include <unistd.h>
+#include <queue>
+#include <sstream>
+
+#include <android-base/chrono_utils.h>
+#include <android-base/stringprintf.h>
+#include <binder/Binder.h>
+#include <log/log.h>
+#include <powermanager/PowerManager.h>
+#include <utils/Trace.h>
+
+#define INDENT " "
+#define INDENT2 " "
+#define INDENT3 " "
+#define INDENT4 " "
+
+using android::base::StringPrintf;
+
+namespace android {
+
+// Default input dispatching timeout if there is no focused application or paused window
+// from which to determine an appropriate dispatching timeout.
+constexpr 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.
+constexpr 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.
+constexpr 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.
+constexpr 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.
+constexpr nsecs_t SLOW_EVENT_PROCESSING_WARNING_TIMEOUT = 2000 * 1000000LL; // 2sec
+
+// Log a warning when an interception call takes longer than this to process.
+constexpr std::chrono::milliseconds SLOW_INTERCEPTION_THRESHOLD = 50ms;
+
+// Number of recent events to keep for debugging purposes.
+constexpr size_t RECENT_QUEUE_MAX_SIZE = 10;
+
+// Sequence number for synthesized or injected events.
+constexpr uint32_t SYNTHESIZED_EVENT_SEQUENCE_NUM = 0;
+
+static inline nsecs_t now() {
+ return systemTime(SYSTEM_TIME_MONOTONIC);
+}
+
+static inline const char* toString(bool value) {
+ return value ? "true" : "false";
+}
+
+static std::string motionActionToString(int32_t action) {
+ // Convert MotionEvent action to string
+ switch (action & AMOTION_EVENT_ACTION_MASK) {
+ case AMOTION_EVENT_ACTION_DOWN:
+ return "DOWN";
+ case AMOTION_EVENT_ACTION_MOVE:
+ return "MOVE";
+ case AMOTION_EVENT_ACTION_UP:
+ return "UP";
+ case AMOTION_EVENT_ACTION_POINTER_DOWN:
+ return "POINTER_DOWN";
+ case AMOTION_EVENT_ACTION_POINTER_UP:
+ return "POINTER_UP";
+ }
+ return StringPrintf("%" PRId32, action);
+}
+
+static std::string keyActionToString(int32_t action) {
+ // Convert KeyEvent action to string
+ switch (action) {
+ case AKEY_EVENT_ACTION_DOWN:
+ return "DOWN";
+ case AKEY_EVENT_ACTION_UP:
+ return "UP";
+ case AKEY_EVENT_ACTION_MULTIPLE:
+ return "MULTIPLE";
+ }
+ return StringPrintf("%" PRId32, action);
+}
+
+static std::string dispatchModeToString(int32_t dispatchMode) {
+ switch (dispatchMode) {
+ case InputTarget::FLAG_DISPATCH_AS_IS:
+ return "DISPATCH_AS_IS";
+ case InputTarget::FLAG_DISPATCH_AS_OUTSIDE:
+ return "DISPATCH_AS_OUTSIDE";
+ case InputTarget::FLAG_DISPATCH_AS_HOVER_ENTER:
+ return "DISPATCH_AS_HOVER_ENTER";
+ case InputTarget::FLAG_DISPATCH_AS_HOVER_EXIT:
+ return "DISPATCH_AS_HOVER_EXIT";
+ case InputTarget::FLAG_DISPATCH_AS_SLIPPERY_EXIT:
+ return "DISPATCH_AS_SLIPPERY_EXIT";
+ case InputTarget::FLAG_DISPATCH_AS_SLIPPERY_ENTER:
+ return "DISPATCH_AS_SLIPPERY_ENTER";
+ }
+ return StringPrintf("%" PRId32, dispatchMode);
+}
+
+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, int32_t actionButton, int32_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 && index < pointerCount;
+ }
+ case AMOTION_EVENT_ACTION_BUTTON_PRESS:
+ case AMOTION_EVENT_ACTION_BUTTON_RELEASE:
+ return actionButton != 0;
+ default:
+ return false;
+ }
+}
+
+static bool validateMotionEvent(int32_t action, int32_t actionButton, size_t pointerCount,
+ const PointerProperties* pointerProperties) {
+ if (!isValidMotionAction(action, actionButton, 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 %zu; 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 void dumpRegion(std::string& dump, const Region& region) {
+ if (region.isEmpty()) {
+ dump += "<empty>";
+ return;
+ }
+
+ bool first = true;
+ Region::const_iterator cur = region.begin();
+ Region::const_iterator const tail = region.end();
+ while (cur != tail) {
+ if (first) {
+ first = false;
+ } else {
+ dump += "|";
+ }
+ dump += StringPrintf("[%d,%d][%d,%d]", cur->left, cur->top, cur->right, cur->bottom);
+ cur++;
+ }
+}
+
+/**
+ * Find the entry in std::unordered_map by key, and return it.
+ * If the entry is not found, return a default constructed entry.
+ *
+ * Useful when the entries are vectors, since an empty vector will be returned
+ * if the entry is not found.
+ * Also useful when the entries are sp<>. If an entry is not found, nullptr is returned.
+ */
+template <typename K, typename V>
+static V getValueByKey(const std::unordered_map<K, V>& map, K key) {
+ auto it = map.find(key);
+ return it != map.end() ? it->second : V{};
+}
+
+/**
+ * Find the entry in std::unordered_map by value, and remove it.
+ * If more than one entry has the same value, then all matching
+ * key-value pairs will be removed.
+ *
+ * Return true if at least one value has been removed.
+ */
+template <typename K, typename V>
+static bool removeByValue(std::unordered_map<K, V>& map, const V& value) {
+ bool removed = false;
+ for (auto it = map.begin(); it != map.end();) {
+ if (it->second == value) {
+ it = map.erase(it);
+ removed = true;
+ } else {
+ it++;
+ }
+ }
+ return removed;
+}
+
+// --- InputDispatcher ---
+
+InputDispatcher::InputDispatcher(const sp<InputDispatcherPolicyInterface>& policy)
+ : mPolicy(policy),
+ mPendingEvent(nullptr),
+ mLastDropReason(DROP_REASON_NOT_DROPPED),
+ mAppSwitchSawKeyDown(false),
+ mAppSwitchDueTime(LONG_LONG_MAX),
+ mNextUnblockedEvent(nullptr),
+ mDispatchEnabled(false),
+ mDispatchFrozen(false),
+ mInputFilterEnabled(false),
+ mFocusedDisplayId(ADISPLAY_ID_DEFAULT),
+ mInputTargetWaitCause(INPUT_TARGET_WAIT_CAUSE_NONE) {
+ mLooper = new Looper(false);
+ mReporter = createInputReporter();
+
+ mKeyRepeatState.lastKeyEntry = nullptr;
+
+ policy->getDispatcherConfiguration(&mConfig);
+}
+
+InputDispatcher::~InputDispatcher() {
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ resetKeyRepeatLocked();
+ releasePendingEventLocked();
+ drainInboundQueueLocked();
+ }
+
+ while (!mConnectionsByFd.empty()) {
+ sp<Connection> connection = mConnectionsByFd.begin()->second;
+ unregisterInputChannel(connection->inputChannel);
+ }
+}
+
+void InputDispatcher::dispatchOnce() {
+ nsecs_t nextWakeupTime = LONG_LONG_MAX;
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+ mDispatcherIsAlive.notify_all();
+
+ // 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 normal dispatch is suspended while the
+ // device is in a non-interactive state. This is to ensure that we abort a key
+ // repeat if the device is just coming out of sleep.
+ if (!mDispatchEnabled) {
+ 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.empty()) {
+ 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.front();
+ mInboundQueue.pop_front();
+ 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 != nullptr);
+ 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 = nullptr;
+ }
+
+ 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 (isAppSwitchKeyEvent(typedEntry)) {
+ resetPendingAppSwitchLocked(true);
+ isAppSwitchDue = false;
+ } else if (dropReason == DROP_REASON_NOT_DROPPED) {
+ dropReason = DROP_REASON_APP_SWITCH;
+ }
+ }
+ if (dropReason == DROP_REASON_NOT_DROPPED && isStaleEvent(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 && isStaleEvent(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);
+ }
+ mLastDropReason = dropReason;
+
+ releasePendingEventLocked();
+ *nextWakeupTime = LONG_LONG_MIN; // force next poll to wake up immediately
+ }
+}
+
+bool InputDispatcher::enqueueInboundEventLocked(EventEntry* entry) {
+ bool needWake = mInboundQueue.empty();
+ mInboundQueue.push_back(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 (isAppSwitchKeyEvent(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 &&
+ mInputTargetWaitApplicationToken != nullptr) {
+ 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 != nullptr &&
+ touchedWindowHandle->getApplicationToken() !=
+ mInputTargetWaitApplicationToken) {
+ // 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;
+}
+
+void InputDispatcher::addRecentEventLocked(EventEntry* entry) {
+ entry->refCount += 1;
+ mRecentQueue.push_back(entry);
+ if (mRecentQueue.size() > RECENT_QUEUE_MAX_SIZE) {
+ mRecentQueue.front()->release();
+ mRecentQueue.pop_front();
+ }
+}
+
+sp<InputWindowHandle> InputDispatcher::findTouchedWindowAtLocked(int32_t displayId, int32_t x,
+ int32_t y, bool addOutsideTargets,
+ bool addPortalWindows) {
+ // Traverse windows from front to back to find touched window.
+ const std::vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+ for (const sp<InputWindowHandle>& windowHandle : windowHandles) {
+ 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)) {
+ int32_t portalToDisplayId = windowInfo->portalToDisplayId;
+ if (portalToDisplayId != ADISPLAY_ID_NONE &&
+ portalToDisplayId != displayId) {
+ if (addPortalWindows) {
+ // For the monitoring channels of the display.
+ mTempTouchState.addPortalWindow(windowHandle);
+ }
+ return findTouchedWindowAtLocked(portalToDisplayId, x, y,
+ addOutsideTargets, addPortalWindows);
+ }
+ // Found window.
+ return windowHandle;
+ }
+ }
+
+ if (addOutsideTargets && (flags & InputWindowInfo::FLAG_WATCH_OUTSIDE_TOUCH)) {
+ mTempTouchState.addOrUpdateWindow(windowHandle,
+ InputTarget::FLAG_DISPATCH_AS_OUTSIDE,
+ BitSet32(0));
+ }
+ }
+ }
+ }
+ return nullptr;
+}
+
+std::vector<InputDispatcher::TouchedMonitor> InputDispatcher::findTouchedGestureMonitorsLocked(
+ int32_t displayId, const std::vector<sp<InputWindowHandle>>& portalWindows) {
+ std::vector<TouchedMonitor> touchedMonitors;
+
+ std::vector<Monitor> monitors = getValueByKey(mGestureMonitorsByDisplay, displayId);
+ addGestureMonitors(monitors, touchedMonitors);
+ for (const sp<InputWindowHandle>& portalWindow : portalWindows) {
+ const InputWindowInfo* windowInfo = portalWindow->getInfo();
+ monitors = getValueByKey(mGestureMonitorsByDisplay, windowInfo->portalToDisplayId);
+ addGestureMonitors(monitors, touchedMonitors, -windowInfo->frameLeft,
+ -windowInfo->frameTop);
+ }
+ return touchedMonitors;
+}
+
+void InputDispatcher::addGestureMonitors(const std::vector<Monitor>& monitors,
+ std::vector<TouchedMonitor>& outTouchedMonitors,
+ float xOffset, float yOffset) {
+ if (monitors.empty()) {
+ return;
+ }
+ outTouchedMonitors.reserve(monitors.size() + outTouchedMonitors.size());
+ for (const Monitor& monitor : monitors) {
+ outTouchedMonitors.emplace_back(monitor, xOffset, yOffset);
+ }
+}
+
+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:
+ if (mLastDropReason != 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;
+ }
+ }
+}
+
+static bool isAppSwitchKeyCode(int32_t keyCode) {
+ return keyCode == AKEYCODE_HOME || keyCode == AKEYCODE_ENDCALL ||
+ keyCode == AKEYCODE_APP_SWITCH;
+}
+
+bool InputDispatcher::isAppSwitchKeyEvent(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::isStaleEvent(nsecs_t currentTime, EventEntry* entry) {
+ return currentTime - entry->eventTime >= STALE_EVENT_TIMEOUT;
+}
+
+bool InputDispatcher::haveCommandsLocked() const {
+ return !mCommandQueue.empty();
+}
+
+bool InputDispatcher::runCommandsLockedInterruptible() {
+ if (mCommandQueue.empty()) {
+ return false;
+ }
+
+ do {
+ std::unique_ptr<CommandEntry> commandEntry = std::move(mCommandQueue.front());
+ mCommandQueue.pop_front();
+ Command command = commandEntry->command;
+ command(*this, commandEntry.get()); // commands are implicitly 'LockedInterruptible'
+
+ commandEntry->connection.clear();
+ } while (!mCommandQueue.empty());
+ return true;
+}
+
+void InputDispatcher::postCommandLocked(std::unique_ptr<CommandEntry> commandEntry) {
+ mCommandQueue.push_back(std::move(commandEntry));
+}
+
+void InputDispatcher::drainInboundQueueLocked() {
+ while (!mInboundQueue.empty()) {
+ EventEntry* entry = mInboundQueue.front();
+ mInboundQueue.pop_front();
+ releaseInboundEventLocked(entry);
+ }
+ traceInboundQueueLengthLocked();
+}
+
+void InputDispatcher::releasePendingEventLocked() {
+ if (mPendingEvent) {
+ resetANRTimeoutsLocked();
+ releaseInboundEventLocked(mPendingEvent);
+ mPendingEvent = nullptr;
+ }
+}
+
+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
+ setInjectionResult(entry, INPUT_EVENT_INJECTION_FAILED);
+ }
+ if (entry == mNextUnblockedEvent) {
+ mNextUnblockedEvent = nullptr;
+ }
+ addRecentEventLocked(entry);
+ entry->release();
+}
+
+void InputDispatcher::resetKeyRepeatLocked() {
+ if (mKeyRepeatState.lastKeyEntry) {
+ mKeyRepeatState.lastKeyEntry->release();
+ mKeyRepeatState.lastKeyEntry = nullptr;
+ }
+}
+
+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(SYNTHESIZED_EVENT_SEQUENCE_NUM, currentTime, entry->deviceId,
+ entry->source, entry->displayId, 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=%" PRId64, 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.
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doNotifyConfigurationChangedLockedInterruptible);
+ commandEntry->eventTime = entry->eventTime;
+ postCommandLocked(std::move(commandEntry));
+ return true;
+}
+
+bool InputDispatcher::dispatchDeviceResetLocked(nsecs_t currentTime, DeviceResetEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("dispatchDeviceReset - eventTime=%" PRId64 ", 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;
+
+ logOutboundKeyDetails("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) {
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible);
+ sp<InputWindowHandle> focusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, getTargetDisplayId(entry));
+ if (focusedWindowHandle != nullptr) {
+ commandEntry->inputChannel = getInputChannelLocked(focusedWindowHandle->getToken());
+ }
+ commandEntry->keyEntry = entry;
+ postCommandLocked(std::move(commandEntry));
+ 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) {
+ setInjectionResult(entry,
+ *dropReason == DROP_REASON_POLICY ? INPUT_EVENT_INJECTION_SUCCEEDED
+ : INPUT_EVENT_INJECTION_FAILED);
+ mReporter->reportDroppedKey(entry->sequenceNum);
+ return true;
+ }
+
+ // Identify targets.
+ std::vector<InputTarget> inputTargets;
+ int32_t injectionResult =
+ findFocusedWindowTargetsLocked(currentTime, entry, inputTargets, nextWakeupTime);
+ if (injectionResult == INPUT_EVENT_INJECTION_PENDING) {
+ return false;
+ }
+
+ setInjectionResult(entry, injectionResult);
+ if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+ return true;
+ }
+
+ // Add monitor channels from event's or focused display.
+ addGlobalMonitoringTargetsLocked(inputTargets, getTargetDisplayId(entry));
+
+ // Dispatch the key.
+ dispatchEventLocked(currentTime, entry, inputTargets);
+ return true;
+}
+
+void InputDispatcher::logOutboundKeyDetails(const char* prefix, const KeyEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32 ", "
+ "policyFlags=0x%x, action=0x%x, flags=0x%x, keyCode=0x%x, scanCode=0x%x, "
+ "metaState=0x%x, repeatCount=%d, downTime=%" PRId64,
+ prefix, entry->eventTime, entry->deviceId, entry->source, entry->displayId,
+ 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) {
+ ATRACE_CALL();
+ // Preprocessing.
+ if (!entry->dispatchInProgress) {
+ entry->dispatchInProgress = true;
+
+ logOutboundMotionDetails("dispatchMotion - ", entry);
+ }
+
+ // Clean up if dropping the event.
+ if (*dropReason != DROP_REASON_NOT_DROPPED) {
+ setInjectionResult(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.
+ std::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;
+ }
+
+ setInjectionResult(entry, injectionResult);
+ if (injectionResult != INPUT_EVENT_INJECTION_SUCCEEDED) {
+ if (injectionResult != INPUT_EVENT_INJECTION_PERMISSION_DENIED) {
+ CancelationOptions::Mode mode(isPointerEvent
+ ? CancelationOptions::CANCEL_POINTER_EVENTS
+ : CancelationOptions::CANCEL_NON_POINTER_EVENTS);
+ CancelationOptions options(mode, "input event injection failed");
+ synthesizeCancelationEventsForMonitorsLocked(options);
+ }
+ return true;
+ }
+
+ // Add monitor channels from event's or focused display.
+ addGlobalMonitoringTargetsLocked(inputTargets, getTargetDisplayId(entry));
+
+ if (isPointerEvent) {
+ ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(entry->displayId);
+ if (stateIndex >= 0) {
+ const TouchState& state = mTouchStatesByDisplay.valueAt(stateIndex);
+ if (!state.portalWindows.empty()) {
+ // The event has gone through these portal windows, so we add monitoring targets of
+ // the corresponding displays as well.
+ for (size_t i = 0; i < state.portalWindows.size(); i++) {
+ const InputWindowInfo* windowInfo = state.portalWindows[i]->getInfo();
+ addGlobalMonitoringTargetsLocked(inputTargets, windowInfo->portalToDisplayId,
+ -windowInfo->frameLeft, -windowInfo->frameTop);
+ }
+ }
+ }
+ }
+
+ // Dispatch the motion.
+ if (conflictingPointerActions) {
+ CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+ "conflicting pointer actions");
+ synthesizeCancelationEventsForAllConnectionsLocked(options);
+ }
+ dispatchEventLocked(currentTime, entry, inputTargets);
+ return true;
+}
+
+void InputDispatcher::logOutboundMotionDetails(const char* prefix, const MotionEntry* entry) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("%seventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32
+ ", policyFlags=0x%x, "
+ "action=0x%x, actionButton=0x%x, flags=0x%x, "
+ "metaState=0x%x, buttonState=0x%x,"
+ "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, downTime=%" PRId64,
+ prefix, entry->eventTime, entry->deviceId, entry->source, entry->displayId,
+ entry->policyFlags, entry->action, entry->actionButton, 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 std::vector<InputTarget>& inputTargets) {
+ ATRACE_CALL();
+#if DEBUG_DISPATCH_CYCLE
+ ALOGD("dispatchEventToCurrentInputTargets");
+#endif
+
+ ALOG_ASSERT(eventEntry->dispatchInProgress); // should already have been set to true
+
+ pokeUserActivityLocked(eventEntry);
+
+ for (const InputTarget& inputTarget : inputTargets) {
+ sp<Connection> connection = getConnectionLocked(inputTarget.inputChannel);
+ if (connection != nullptr) {
+ 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().c_str());
+#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 == nullptr && windowHandle == nullptr) {
+ 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;
+ mInputTargetWaitApplicationToken.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",
+ getApplicationWindowLabel(applicationHandle, windowHandle).c_str(), reason);
+#endif
+ nsecs_t timeout;
+ if (windowHandle != nullptr) {
+ timeout = windowHandle->getDispatchingTimeout(DEFAULT_INPUT_DISPATCHING_TIMEOUT);
+ } else if (applicationHandle != nullptr) {
+ 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;
+ mInputTargetWaitApplicationToken.clear();
+
+ if (windowHandle != nullptr) {
+ mInputTargetWaitApplicationToken = windowHandle->getApplicationToken();
+ }
+ if (mInputTargetWaitApplicationToken == nullptr && applicationHandle != nullptr) {
+ mInputTargetWaitApplicationToken = applicationHandle->getApplicationToken();
+ }
+ }
+ }
+
+ 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::removeWindowByTokenLocked(const sp<IBinder>& token) {
+ for (size_t d = 0; d < mTouchStatesByDisplay.size(); d++) {
+ TouchState& state = mTouchStatesByDisplay.editValueAt(d);
+ state.removeWindowByToken(token);
+ }
+}
+
+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.
+ sp<Connection> connection = getConnectionLocked(inputChannel);
+ if (connection != nullptr) {
+ sp<IBinder> token = connection->inputChannel->getToken();
+
+ if (token != nullptr) {
+ removeWindowByTokenLocked(token);
+ }
+
+ 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;
+ mInputTargetWaitApplicationToken.clear();
+}
+
+/**
+ * Get the display id that the given event should go to. If this event specifies a valid display id,
+ * then it should be dispatched to that display. Otherwise, the event goes to the focused display.
+ * Focused display is the display that the user most recently interacted with.
+ */
+int32_t InputDispatcher::getTargetDisplayId(const EventEntry* entry) {
+ int32_t displayId;
+ switch (entry->type) {
+ case EventEntry::TYPE_KEY: {
+ const KeyEntry* typedEntry = static_cast<const KeyEntry*>(entry);
+ displayId = typedEntry->displayId;
+ break;
+ }
+ case EventEntry::TYPE_MOTION: {
+ const MotionEntry* typedEntry = static_cast<const MotionEntry*>(entry);
+ displayId = typedEntry->displayId;
+ break;
+ }
+ default: {
+ ALOGE("Unsupported event type '%" PRId32 "' for target display.", entry->type);
+ return ADISPLAY_ID_NONE;
+ }
+ }
+ return displayId == ADISPLAY_ID_NONE ? mFocusedDisplayId : displayId;
+}
+
+int32_t InputDispatcher::findFocusedWindowTargetsLocked(nsecs_t currentTime,
+ const EventEntry* entry,
+ std::vector<InputTarget>& inputTargets,
+ nsecs_t* nextWakeupTime) {
+ int32_t injectionResult;
+ std::string reason;
+
+ int32_t displayId = getTargetDisplayId(entry);
+ sp<InputWindowHandle> focusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+ sp<InputApplicationHandle> focusedApplicationHandle =
+ getValueByKey(mFocusedApplicationHandlesByDisplay, displayId);
+
+ // If there is no currently focused window and no focused application
+ // then drop the event.
+ if (focusedWindowHandle == nullptr) {
+ if (focusedApplicationHandle != nullptr) {
+ injectionResult =
+ handleTargetsNotReadyLocked(currentTime, entry, focusedApplicationHandle,
+ nullptr, 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 in display "
+ "%" PRId32 ".",
+ displayId);
+ injectionResult = INPUT_EVENT_INJECTION_FAILED;
+ goto Failed;
+ }
+
+ // Check permissions.
+ if (!checkInjectionPermission(focusedWindowHandle, entry->injectionState)) {
+ injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+ goto Failed;
+ }
+
+ // Check whether the window is ready for more input.
+ reason = checkWindowReadyForMoreInputLocked(currentTime, focusedWindowHandle, entry, "focused");
+ if (!reason.empty()) {
+ injectionResult =
+ handleTargetsNotReadyLocked(currentTime, entry, focusedApplicationHandle,
+ focusedWindowHandle, nextWakeupTime, reason.c_str());
+ goto Unresponsive;
+ }
+
+ // Success! Output targets.
+ injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+ addWindowTargetLocked(focusedWindowHandle,
+ InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_DISPATCH_AS_IS,
+ BitSet32(0), inputTargets);
+
+ // Done.
+Failed:
+Unresponsive:
+ nsecs_t timeSpentWaitingForApplication = getTimeSpentWaitingForApplicationLocked(currentTime);
+ updateDispatchStatistics(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,
+ std::vector<InputTarget>& inputTargets,
+ nsecs_t* nextWakeupTime,
+ bool* outConflictingPointerActions) {
+ ATRACE_CALL();
+ enum InjectionPermission {
+ INJECTION_PERMISSION_UNKNOWN,
+ INJECTION_PERMISSION_GRANTED,
+ INJECTION_PERMISSION_DENIED
+ };
+
+ // For security reasons, we defer updating the touch state until we are sure that
+ // event injection will be allowed.
+ 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;
+
+ // Copy current touch state into mTempTouchState.
+ // This state is always reset at the end of this function, so if we don't find state
+ // for the specified display then our initial state will be empty.
+ const TouchState* oldState = nullptr;
+ ssize_t oldStateIndex = mTouchStatesByDisplay.indexOfKey(displayId);
+ if (oldStateIndex >= 0) {
+ oldState = &mTouchStatesByDisplay.valueAt(oldStateIndex);
+ mTempTouchState.copyFrom(*oldState);
+ }
+
+ bool isSplit = mTempTouchState.split;
+ bool switchedDevice = mTempTouchState.deviceId >= 0 && mTempTouchState.displayId >= 0 &&
+ (mTempTouchState.deviceId != entry->deviceId ||
+ mTempTouchState.source != entry->source || mTempTouchState.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);
+ const bool isFromMouse = entry->source == AINPUT_SOURCE_MOUSE;
+ bool wrongDevice = false;
+ if (newGesture) {
+ bool down = maskedAction == AMOTION_EVENT_ACTION_DOWN;
+ if (switchedDevice && mTempTouchState.down && !down && !isHoverAction) {
+#if DEBUG_FOCUS
+ ALOGD("Dropping event because a pointer for a different device is already down "
+ "in display %" PRId32,
+ displayId);
+#endif
+ // TODO: test multiple simultaneous input streams.
+ 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 if (switchedDevice && maskedAction == AMOTION_EVENT_ACTION_MOVE) {
+#if DEBUG_FOCUS
+ ALOGI("Dropping move event because a pointer for a different device is already active "
+ "in display %" PRId32,
+ displayId);
+#endif
+ // TODO: test multiple simultaneous input streams.
+ injectionResult = INPUT_EVENT_INJECTION_PERMISSION_DENIED;
+ switchedDevice = false;
+ wrongDevice = true;
+ goto Failed;
+ }
+
+ 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 x;
+ int32_t y;
+ int32_t pointerIndex = getMotionEventActionPointerIndex(action);
+ // Always dispatch mouse events to cursor position.
+ if (isFromMouse) {
+ x = int32_t(entry->xCursorPosition);
+ y = int32_t(entry->yCursorPosition);
+ } else {
+ x = int32_t(entry->pointerCoords[pointerIndex].getAxisValue(AMOTION_EVENT_AXIS_X));
+ y = int32_t(entry->pointerCoords[pointerIndex].getAxisValue(AMOTION_EVENT_AXIS_Y));
+ }
+ bool isDown = maskedAction == AMOTION_EVENT_ACTION_DOWN;
+ sp<InputWindowHandle> newTouchedWindowHandle =
+ findTouchedWindowAtLocked(displayId, x, y, isDown /*addOutsideTargets*/,
+ true /*addPortalWindows*/);
+
+ std::vector<TouchedMonitor> newGestureMonitors = isDown
+ ? findTouchedGestureMonitorsLocked(displayId, mTempTouchState.portalWindows)
+ : std::vector<TouchedMonitor>{};
+
+ // Figure out whether splitting will be allowed for this window.
+ if (newTouchedWindowHandle != nullptr &&
+ newTouchedWindowHandle->getInfo()->supportsSplitTouch()) {
+ // New window supports splitting, but we should never split mouse events.
+ isSplit = !isFromMouse;
+ } else if (isSplit) {
+ // New window does not support splitting but we have already split events.
+ // Ignore the new window.
+ newTouchedWindowHandle = nullptr;
+ }
+
+ // Handle the case where we did not find a window.
+ if (newTouchedWindowHandle == nullptr) {
+ // Try to assign the pointer to the first foreground window we find, if there is one.
+ newTouchedWindowHandle = mTempTouchState.getFirstForegroundWindowHandle();
+ }
+
+ if (newTouchedWindowHandle == nullptr && newGestureMonitors.empty()) {
+ ALOGI("Dropping event because there is no touchable window or gesture monitor at "
+ "(%d, %d) in display %" PRId32 ".",
+ x, y, displayId);
+ injectionResult = INPUT_EVENT_INJECTION_FAILED;
+ goto Failed;
+ }
+
+ if (newTouchedWindowHandle != nullptr) {
+ // 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;
+ } else if (isWindowObscuredLocked(newTouchedWindowHandle)) {
+ targetFlags |= InputTarget::FLAG_WINDOW_IS_PARTIALLY_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);
+ }
+
+ mTempTouchState.addGestureMonitors(newGestureMonitors);
+ } 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 in display %" PRId32,
+ displayId);
+#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 &&
+ oldTouchedWindowHandle != nullptr && newTouchedWindowHandle != nullptr) {
+#if DEBUG_FOCUS
+ ALOGD("Touch is slipping out of window %s into window %s in display %" PRId32,
+ oldTouchedWindowHandle->getName().c_str(),
+ newTouchedWindowHandle->getName().c_str(), displayId);
+#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 != nullptr) {
+#if DEBUG_HOVER
+ ALOGD("Sending hover exit event to window %s.",
+ mLastHoverWindowHandle->getName().c_str());
+#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 != nullptr) {
+#if DEBUG_HOVER
+ ALOGD("Sending hover enter event to window %s.",
+ newHoverWindowHandle->getName().c_str());
+#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 (const TouchedWindow& touchedWindow : mTempTouchState.windows) {
+ 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;
+ }
+ }
+ }
+ bool hasGestureMonitor = !mTempTouchState.gestureMonitors.empty();
+ if (!haveForegroundWindow && !hasGestureMonitor) {
+#if DEBUG_FOCUS
+ ALOGD("Dropping event because there is no touched foreground window in display %" PRId32
+ " or gesture monitor to receive it.",
+ displayId);
+#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();
+ if (foregroundWindowHandle) {
+ const int32_t foregroundWindowUid = foregroundWindowHandle->getInfo()->ownerUid;
+ for (const TouchedWindow& touchedWindow : mTempTouchState.windows) {
+ 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 (const TouchedWindow& touchedWindow : mTempTouchState.windows) {
+ if (touchedWindow.targetFlags & InputTarget::FLAG_FOREGROUND) {
+ // Check whether the window is ready for more input.
+ std::string reason =
+ checkWindowReadyForMoreInputLocked(currentTime, touchedWindow.windowHandle,
+ entry, "touched");
+ if (!reason.empty()) {
+ injectionResult = handleTargetsNotReadyLocked(currentTime, entry, nullptr,
+ touchedWindow.windowHandle,
+ nextWakeupTime, reason.c_str());
+ 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 && foregroundWindowHandle->getInfo()->hasWallpaper) {
+ const std::vector<sp<InputWindowHandle>> windowHandles =
+ getWindowHandlesLocked(displayId);
+ for (const sp<InputWindowHandle>& windowHandle : windowHandles) {
+ 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_WINDOW_IS_PARTIALLY_OBSCURED |
+ InputTarget::FLAG_DISPATCH_AS_IS,
+ BitSet32(0));
+ }
+ }
+ }
+ }
+
+ // Success! Output targets.
+ injectionResult = INPUT_EVENT_INJECTION_SUCCEEDED;
+
+ for (const TouchedWindow& touchedWindow : mTempTouchState.windows) {
+ addWindowTargetLocked(touchedWindow.windowHandle, touchedWindow.targetFlags,
+ touchedWindow.pointerIds, inputTargets);
+ }
+
+ for (const TouchedMonitor& touchedMonitor : mTempTouchState.gestureMonitors) {
+ addMonitoringTargetLocked(touchedMonitor.monitor, touchedMonitor.xOffset,
+ touchedMonitor.yOffset, 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(nullptr, 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 (oldState && oldState->down) {
+#if DEBUG_FOCUS
+ ALOGD("Conflicting pointer actions: Hover received while pointer was down.");
+#endif
+ *outConflictingPointerActions = true;
+ }
+ mTempTouchState.reset();
+ if (maskedAction == AMOTION_EVENT_ACTION_HOVER_ENTER ||
+ maskedAction == AMOTION_EVENT_ACTION_HOVER_MOVE) {
+ mTempTouchState.deviceId = entry->deviceId;
+ mTempTouchState.source = entry->source;
+ mTempTouchState.displayId = displayId;
+ }
+ } else if (maskedAction == AMOTION_EVENT_ACTION_UP ||
+ maskedAction == AMOTION_EVENT_ACTION_CANCEL) {
+ // All pointers up or canceled.
+ mTempTouchState.reset();
+ } else if (maskedAction == AMOTION_EVENT_ACTION_DOWN) {
+ // First pointer went down.
+ if (oldState && oldState->down) {
+#if DEBUG_FOCUS
+ ALOGD("Conflicting pointer actions: Down received while already down.");
+#endif
+ *outConflictingPointerActions = true;
+ }
+ } 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[i];
+ if (touchedWindow.targetFlags & InputTarget::FLAG_SPLIT) {
+ touchedWindow.pointerIds.clearBit(pointerId);
+ if (touchedWindow.pointerIds.isEmpty()) {
+ mTempTouchState.windows.erase(mTempTouchState.windows.begin() + i);
+ continue;
+ }
+ }
+ i += 1;
+ }
+ }
+ }
+
+ // Save changes unless the action was scroll in which case the temporary touch
+ // state was only valid for this one action.
+ if (maskedAction != AMOTION_EVENT_ACTION_SCROLL) {
+ if (mTempTouchState.displayId >= 0) {
+ if (oldStateIndex >= 0) {
+ mTouchStatesByDisplay.editValueAt(oldStateIndex).copyFrom(mTempTouchState);
+ } else {
+ mTouchStatesByDisplay.add(displayId, mTempTouchState);
+ }
+ } else if (oldStateIndex >= 0) {
+ mTouchStatesByDisplay.removeItemsAt(oldStateIndex);
+ }
+ }
+
+ // 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);
+ updateDispatchStatistics(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,
+ std::vector<InputTarget>& inputTargets) {
+ sp<InputChannel> inputChannel = getInputChannelLocked(windowHandle->getToken());
+ if (inputChannel == nullptr) {
+ ALOGW("Window %s already unregistered input channel", windowHandle->getName().c_str());
+ return;
+ }
+
+ const InputWindowInfo* windowInfo = windowHandle->getInfo();
+ InputTarget target;
+ target.inputChannel = inputChannel;
+ target.flags = targetFlags;
+ target.xOffset = -windowInfo->frameLeft;
+ target.yOffset = -windowInfo->frameTop;
+ target.globalScaleFactor = windowInfo->globalScaleFactor;
+ target.windowXScale = windowInfo->windowXScale;
+ target.windowYScale = windowInfo->windowYScale;
+ target.pointerIds = pointerIds;
+ inputTargets.push_back(target);
+}
+
+void InputDispatcher::addGlobalMonitoringTargetsLocked(std::vector<InputTarget>& inputTargets,
+ int32_t displayId, float xOffset,
+ float yOffset) {
+ std::unordered_map<int32_t, std::vector<Monitor>>::const_iterator it =
+ mGlobalMonitorsByDisplay.find(displayId);
+
+ if (it != mGlobalMonitorsByDisplay.end()) {
+ const std::vector<Monitor>& monitors = it->second;
+ for (const Monitor& monitor : monitors) {
+ addMonitoringTargetLocked(monitor, xOffset, yOffset, inputTargets);
+ }
+ }
+}
+
+void InputDispatcher::addMonitoringTargetLocked(const Monitor& monitor, float xOffset,
+ float yOffset,
+ std::vector<InputTarget>& inputTargets) {
+ InputTarget target;
+ target.inputChannel = monitor.inputChannel;
+ target.flags = InputTarget::FLAG_DISPATCH_AS_IS;
+ target.xOffset = xOffset;
+ target.yOffset = yOffset;
+ target.pointerIds.clear();
+ target.globalScaleFactor = 1.0f;
+ inputTargets.push_back(target);
+}
+
+bool InputDispatcher::checkInjectionPermission(const sp<InputWindowHandle>& windowHandle,
+ const InjectionState* injectionState) {
+ if (injectionState &&
+ (windowHandle == nullptr ||
+ windowHandle->getInfo()->ownerUid != injectionState->injectorUid) &&
+ !hasInjectionPermission(injectionState->injectorPid, injectionState->injectorUid)) {
+ if (windowHandle != nullptr) {
+ ALOGW("Permission denied: injecting event from pid %d uid %d to window %s "
+ "owned by uid %d",
+ injectionState->injectorPid, injectionState->injectorUid,
+ windowHandle->getName().c_str(), 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;
+ const std::vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+ for (const sp<InputWindowHandle>& otherHandle : windowHandles) {
+ 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::isWindowObscuredLocked(const sp<InputWindowHandle>& windowHandle) const {
+ int32_t displayId = windowHandle->getInfo()->displayId;
+ const std::vector<sp<InputWindowHandle>> windowHandles = getWindowHandlesLocked(displayId);
+ const InputWindowInfo* windowInfo = windowHandle->getInfo();
+ for (const sp<InputWindowHandle>& otherHandle : windowHandles) {
+ if (otherHandle == windowHandle) {
+ break;
+ }
+
+ const InputWindowInfo* otherInfo = otherHandle->getInfo();
+ if (otherInfo->displayId == displayId && otherInfo->visible &&
+ !otherInfo->isTrustedOverlay() && otherInfo->overlaps(windowInfo)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+std::string InputDispatcher::checkWindowReadyForMoreInputLocked(
+ nsecs_t currentTime, const sp<InputWindowHandle>& windowHandle,
+ const EventEntry* eventEntry, const char* targetType) {
+ // If the window is paused then keep waiting.
+ if (windowHandle->getInfo()->paused) {
+ return StringPrintf("Waiting because the %s window is paused.", targetType);
+ }
+
+ // If the window's connection is not registered then keep waiting.
+ sp<Connection> connection =
+ getConnectionLocked(getInputChannelLocked(windowHandle->getToken()));
+ if (connection == nullptr) {
+ return StringPrintf("Waiting because the %s window's input channel is not "
+ "registered with the input dispatcher. The window may be in the "
+ "process of being removed.",
+ targetType);
+ }
+
+ // If the connection is dead then keep waiting.
+ if (connection->status != Connection::STATUS_NORMAL) {
+ return StringPrintf("Waiting because the %s window's input connection is %s."
+ "The window may be in the process of being removed.",
+ targetType, connection->getStatusLabel());
+ }
+
+ // If the connection is backed up then keep waiting.
+ if (connection->inputPublisherBlocked) {
+ return StringPrintf("Waiting because the %s window's input channel is full. "
+ "Outbound queue length: %zu. Wait queue length: %zu.",
+ targetType, connection->outboundQueue.size(),
+ connection->waitQueue.size());
+ }
+
+ // Ensure that the dispatch queues aren't too far backed up for this event.
+ 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.
+ if (!connection->outboundQueue.empty() || !connection->waitQueue.empty()) {
+ return StringPrintf("Waiting to send key event because the %s window has not "
+ "finished processing all of the input events that were previously "
+ "delivered to it. Outbound queue length: %zu. Wait queue length: "
+ "%zu.",
+ targetType, connection->outboundQueue.size(),
+ connection->waitQueue.size());
+ }
+ } else {
+ // 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.empty() &&
+ currentTime >=
+ connection->waitQueue.front()->deliveryTime + STREAM_AHEAD_EVENT_TIMEOUT) {
+ return StringPrintf("Waiting to send non-key event because the %s window has not "
+ "finished processing certain input events that were delivered to "
+ "it over "
+ "%0.1fms ago. Wait queue length: %zu. Wait queue head age: "
+ "%0.1fms.",
+ targetType, STREAM_AHEAD_EVENT_TIMEOUT * 0.000001f,
+ connection->waitQueue.size(),
+ (currentTime - connection->waitQueue.front()->deliveryTime) *
+ 0.000001f);
+ }
+ }
+ return "";
+}
+
+std::string InputDispatcher::getApplicationWindowLabel(
+ const sp<InputApplicationHandle>& applicationHandle,
+ const sp<InputWindowHandle>& windowHandle) {
+ if (applicationHandle != nullptr) {
+ if (windowHandle != nullptr) {
+ std::string label(applicationHandle->getName());
+ label += " - ";
+ label += windowHandle->getName();
+ return label;
+ } else {
+ return applicationHandle->getName();
+ }
+ } else if (windowHandle != nullptr) {
+ return windowHandle->getName();
+ } else {
+ return "<unknown application or window>";
+ }
+}
+
+void InputDispatcher::pokeUserActivityLocked(const EventEntry* eventEntry) {
+ int32_t displayId = getTargetDisplayId(eventEntry);
+ sp<InputWindowHandle> focusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+ if (focusedWindowHandle != nullptr) {
+ const InputWindowInfo* info = focusedWindowHandle->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.c_str());
+#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;
+ }
+ }
+
+ std::unique_ptr<CommandEntry> commandEntry =
+ std::make_unique<CommandEntry>(&InputDispatcher::doPokeUserActivityLockedInterruptible);
+ commandEntry->eventTime = eventEntry->eventTime;
+ commandEntry->userActivityEventType = eventType;
+ postCommandLocked(std::move(commandEntry));
+}
+
+void InputDispatcher::prepareDispatchCycleLocked(nsecs_t currentTime,
+ const sp<Connection>& connection,
+ EventEntry* eventEntry,
+ const InputTarget* inputTarget) {
+ if (ATRACE_ENABLED()) {
+ std::string message =
+ StringPrintf("prepareDispatchCycleLocked(inputChannel=%s, sequenceNum=%" PRIu32 ")",
+ connection->getInputChannelName().c_str(), eventEntry->sequenceNum);
+ ATRACE_NAME(message.c_str());
+ }
+#if DEBUG_DISPATCH_CYCLE
+ ALOGD("channel '%s' ~ prepareDispatchCycle - flags=0x%08x, "
+ "xOffset=%f, yOffset=%f, globalScaleFactor=%f, "
+ "windowScaleFactor=(%f, %f), pointerIds=0x%x",
+ connection->getInputChannelName().c_str(), inputTarget->flags, inputTarget->xOffset,
+ inputTarget->yOffset, inputTarget->globalScaleFactor, inputTarget->windowXScale,
+ inputTarget->windowYScale, 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().c_str(), 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().c_str());
+ logOutboundMotionDetails(" ", 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) {
+ if (ATRACE_ENABLED()) {
+ std::string message =
+ StringPrintf("enqueueDispatchEntriesLocked(inputChannel=%s, sequenceNum=%" PRIu32
+ ")",
+ connection->getInputChannelName().c_str(), eventEntry->sequenceNum);
+ ATRACE_NAME(message.c_str());
+ }
+
+ bool wasEmpty = connection->outboundQueue.empty();
+
+ // 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.empty()) {
+ startDispatchCycleLocked(currentTime, connection);
+ }
+}
+
+void InputDispatcher::enqueueDispatchEntryLocked(const sp<Connection>& connection,
+ EventEntry* eventEntry,
+ const InputTarget* inputTarget,
+ int32_t dispatchMode) {
+ if (ATRACE_ENABLED()) {
+ std::string message = StringPrintf("enqueueDispatchEntry(inputChannel=%s, dispatchMode=%s)",
+ connection->getInputChannelName().c_str(),
+ dispatchModeToString(dispatchMode).c_str());
+ ATRACE_NAME(message.c_str());
+ }
+ 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->globalScaleFactor, inputTarget->windowXScale,
+ inputTarget->windowYScale);
+
+ // 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().c_str());
+#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().c_str());
+#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 (dispatchEntry->targetFlags & InputTarget::FLAG_WINDOW_IS_PARTIALLY_OBSCURED) {
+ dispatchEntry->resolvedFlags |= AMOTION_EVENT_FLAG_WINDOW_IS_PARTIALLY_OBSCURED;
+ }
+
+ if (!connection->inputState.trackMotion(motionEntry, dispatchEntry->resolvedAction,
+ dispatchEntry->resolvedFlags)) {
+#if DEBUG_DISPATCH_CYCLE
+ ALOGD("channel '%s' ~ enqueueDispatchEntryLocked: skipping inconsistent motion "
+ "event",
+ connection->getInputChannelName().c_str());
+#endif
+ delete dispatchEntry;
+ return; // skip the inconsistent event
+ }
+
+ dispatchPointerDownOutsideFocus(motionEntry->source, dispatchEntry->resolvedAction,
+ inputTarget->inputChannel->getToken());
+
+ break;
+ }
+ }
+
+ // Remember that we are waiting for this dispatch to complete.
+ if (dispatchEntry->hasForegroundTarget()) {
+ incrementPendingForegroundDispatches(eventEntry);
+ }
+
+ // Enqueue the dispatch entry.
+ connection->outboundQueue.push_back(dispatchEntry);
+ traceOutboundQueueLength(connection);
+}
+
+void InputDispatcher::dispatchPointerDownOutsideFocus(uint32_t source, int32_t action,
+ const sp<IBinder>& newToken) {
+ int32_t maskedAction = action & AMOTION_EVENT_ACTION_MASK;
+ uint32_t maskedSource = source & AINPUT_SOURCE_CLASS_MASK;
+ if (maskedSource != AINPUT_SOURCE_CLASS_POINTER || maskedAction != AMOTION_EVENT_ACTION_DOWN) {
+ return;
+ }
+
+ sp<InputWindowHandle> inputWindowHandle = getWindowHandleLocked(newToken);
+ if (inputWindowHandle == nullptr) {
+ return;
+ }
+
+ sp<InputWindowHandle> focusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, mFocusedDisplayId);
+
+ bool hasFocusChanged = !focusedWindowHandle || focusedWindowHandle->getToken() != newToken;
+
+ if (!hasFocusChanged) {
+ return;
+ }
+
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doOnPointerDownOutsideFocusLockedInterruptible);
+ commandEntry->newToken = newToken;
+ postCommandLocked(std::move(commandEntry));
+}
+
+void InputDispatcher::startDispatchCycleLocked(nsecs_t currentTime,
+ const sp<Connection>& connection) {
+ if (ATRACE_ENABLED()) {
+ std::string message = StringPrintf("startDispatchCycleLocked(inputChannel=%s)",
+ connection->getInputChannelName().c_str());
+ ATRACE_NAME(message.c_str());
+ }
+#if DEBUG_DISPATCH_CYCLE
+ ALOGD("channel '%s' ~ startDispatchCycle", connection->getInputChannelName().c_str());
+#endif
+
+ while (connection->status == Connection::STATUS_NORMAL && !connection->outboundQueue.empty()) {
+ DispatchEntry* dispatchEntry = connection->outboundQueue.front();
+ 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, keyEntry->displayId,
+ 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;
+ if ((motionEntry->source & AINPUT_SOURCE_CLASS_POINTER) &&
+ !(dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS)) {
+ float globalScaleFactor = dispatchEntry->globalScaleFactor;
+ float wxs = dispatchEntry->windowXScale;
+ float wys = dispatchEntry->windowYScale;
+ xOffset = dispatchEntry->xOffset * wxs;
+ yOffset = dispatchEntry->yOffset * wys;
+ if (wxs != 1.0f || wys != 1.0f || globalScaleFactor != 1.0f) {
+ for (uint32_t i = 0; i < motionEntry->pointerCount; i++) {
+ scaledCoords[i] = motionEntry->pointerCoords[i];
+ scaledCoords[i].scale(globalScaleFactor, wxs, wys);
+ }
+ usingCoords = scaledCoords;
+ }
+ } else {
+ xOffset = 0.0f;
+ yOffset = 0.0f;
+
+ // We don't want the dispatch target to know.
+ if (dispatchEntry->targetFlags & InputTarget::FLAG_ZERO_COORDS) {
+ for (uint32_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, motionEntry->displayId,
+ dispatchEntry->resolvedAction,
+ motionEntry->actionButton,
+ dispatchEntry->resolvedFlags,
+ motionEntry->edgeFlags, motionEntry->metaState,
+ motionEntry->buttonState,
+ motionEntry->classification, xOffset, yOffset,
+ motionEntry->xPrecision,
+ motionEntry->yPrecision,
+ motionEntry->xCursorPosition,
+ motionEntry->yCursorPosition,
+ 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.empty()) {
+ 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().c_str(), 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().c_str());
+#endif
+ connection->inputPublisherBlocked = true;
+ }
+ } else {
+ ALOGE("channel '%s' ~ Could not publish event due to an unexpected error, "
+ "status=%d",
+ connection->getInputChannelName().c_str(), status);
+ abortBrokenDispatchCycleLocked(currentTime, connection, true /*notify*/);
+ }
+ return;
+ }
+
+ // Re-enqueue the event on the wait queue.
+ connection->outboundQueue.erase(std::remove(connection->outboundQueue.begin(),
+ connection->outboundQueue.end(),
+ dispatchEntry));
+ traceOutboundQueueLength(connection);
+ connection->waitQueue.push_back(dispatchEntry);
+ traceWaitQueueLength(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().c_str(), 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().c_str(), toString(notify));
+#endif
+
+ // Clear the dispatch queues.
+ drainDispatchQueue(connection->outboundQueue);
+ traceOutboundQueueLength(connection);
+ drainDispatchQueue(connection->waitQueue);
+ traceWaitQueueLength(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::drainDispatchQueue(std::deque<DispatchEntry*>& queue) {
+ while (!queue.empty()) {
+ DispatchEntry* dispatchEntry = queue.front();
+ queue.pop_front();
+ releaseDispatchEntry(dispatchEntry);
+ }
+}
+
+void InputDispatcher::releaseDispatchEntry(DispatchEntry* dispatchEntry) {
+ if (dispatchEntry->hasForegroundTarget()) {
+ decrementPendingForegroundDispatches(dispatchEntry->eventEntry);
+ }
+ delete dispatchEntry;
+}
+
+int InputDispatcher::handleReceiveCallback(int fd, int events, void* data) {
+ InputDispatcher* d = static_cast<InputDispatcher*>(data);
+
+ { // acquire lock
+ std::scoped_lock _l(d->mLock);
+
+ if (d->mConnectionsByFd.find(fd) == d->mConnectionsByFd.end()) {
+ 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[fd];
+ 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().c_str(), 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().c_str(), 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().c_str(), events);
+ }
+ }
+
+ // Unregister the channel.
+ d->unregisterInputChannelLocked(connection->inputChannel, notify);
+ return 0; // remove the callback
+ } // release lock
+}
+
+void InputDispatcher::synthesizeCancelationEventsForAllConnectionsLocked(
+ const CancelationOptions& options) {
+ for (const auto& pair : mConnectionsByFd) {
+ synthesizeCancelationEventsForConnectionLocked(pair.second, options);
+ }
+}
+
+void InputDispatcher::synthesizeCancelationEventsForMonitorsLocked(
+ const CancelationOptions& options) {
+ synthesizeCancelationEventsForMonitorsLocked(options, mGlobalMonitorsByDisplay);
+ synthesizeCancelationEventsForMonitorsLocked(options, mGestureMonitorsByDisplay);
+}
+
+void InputDispatcher::synthesizeCancelationEventsForMonitorsLocked(
+ const CancelationOptions& options,
+ std::unordered_map<int32_t, std::vector<Monitor>>& monitorsByDisplay) {
+ for (const auto& it : monitorsByDisplay) {
+ const std::vector<Monitor>& monitors = it.second;
+ for (const Monitor& monitor : monitors) {
+ synthesizeCancelationEventsForInputChannelLocked(monitor.inputChannel, options);
+ }
+ }
+}
+
+void InputDispatcher::synthesizeCancelationEventsForInputChannelLocked(
+ const sp<InputChannel>& channel, const CancelationOptions& options) {
+ sp<Connection> connection = getConnectionLocked(channel);
+ if (connection == nullptr) {
+ return;
+ }
+
+ synthesizeCancelationEventsForConnectionLocked(connection, options);
+}
+
+void InputDispatcher::synthesizeCancelationEventsForConnectionLocked(
+ const sp<Connection>& connection, const CancelationOptions& options) {
+ if (connection->status == Connection::STATUS_BROKEN) {
+ return;
+ }
+
+ nsecs_t currentTime = now();
+
+ std::vector<EventEntry*> cancelationEvents;
+ connection->inputState.synthesizeCancelationEvents(currentTime, cancelationEvents, options);
+
+ if (!cancelationEvents.empty()) {
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("channel '%s' ~ Synthesized %zu cancelation events to bring channel back in sync "
+ "with reality: %s, mode=%d.",
+ connection->getInputChannelName().c_str(), cancelationEvents.size(), options.reason,
+ options.mode);
+#endif
+ for (size_t i = 0; i < cancelationEvents.size(); i++) {
+ EventEntry* cancelationEventEntry = cancelationEvents[i];
+ switch (cancelationEventEntry->type) {
+ case EventEntry::TYPE_KEY:
+ logOutboundKeyDetails("cancel - ",
+ static_cast<KeyEntry*>(cancelationEventEntry));
+ break;
+ case EventEntry::TYPE_MOTION:
+ logOutboundMotionDetails("cancel - ",
+ static_cast<MotionEntry*>(cancelationEventEntry));
+ break;
+ }
+
+ InputTarget target;
+ sp<InputWindowHandle> windowHandle =
+ getWindowHandleLocked(connection->inputChannel->getToken());
+ if (windowHandle != nullptr) {
+ const InputWindowInfo* windowInfo = windowHandle->getInfo();
+ target.xOffset = -windowInfo->frameLeft;
+ target.yOffset = -windowInfo->frameTop;
+ target.globalScaleFactor = windowInfo->globalScaleFactor;
+ target.windowXScale = windowInfo->windowXScale;
+ target.windowYScale = windowInfo->windowYScale;
+ } else {
+ target.xOffset = 0;
+ target.yOffset = 0;
+ target.globalScaleFactor = 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 nullptr;
+ }
+
+ 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->sequenceNum, originalMotionEntry->eventTime,
+ originalMotionEntry->deviceId, originalMotionEntry->source,
+ originalMotionEntry->displayId, originalMotionEntry->policyFlags,
+ action, originalMotionEntry->actionButton, originalMotionEntry->flags,
+ originalMotionEntry->metaState, originalMotionEntry->buttonState,
+ originalMotionEntry->classification, originalMotionEntry->edgeFlags,
+ originalMotionEntry->xPrecision, originalMotionEntry->yPrecision,
+ originalMotionEntry->xCursorPosition,
+ originalMotionEntry->yCursorPosition, originalMotionEntry->downTime,
+ splitPointerCount, splitPointerProperties, splitPointerCoords, 0, 0);
+
+ 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=%" PRId64, args->eventTime);
+#endif
+
+ bool needWake;
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ ConfigurationChangedEntry* newEntry =
+ new ConfigurationChangedEntry(args->sequenceNum, args->eventTime);
+ needWake = enqueueInboundEventLocked(newEntry);
+ } // release lock
+
+ if (needWake) {
+ mLooper->wake();
+ }
+}
+
+/**
+ * If one of the meta shortcuts is detected, process them here:
+ * Meta + Backspace -> generate BACK
+ * Meta + Enter -> generate HOME
+ * This will potentially overwrite keyCode and metaState.
+ */
+void InputDispatcher::accelerateMetaShortcuts(const int32_t deviceId, const int32_t action,
+ int32_t& keyCode, int32_t& metaState) {
+ if (metaState & AMETA_META_ON && action == AKEY_EVENT_ACTION_DOWN) {
+ int32_t newKeyCode = AKEYCODE_UNKNOWN;
+ if (keyCode == AKEYCODE_DEL) {
+ newKeyCode = AKEYCODE_BACK;
+ } else if (keyCode == AKEYCODE_ENTER) {
+ newKeyCode = AKEYCODE_HOME;
+ }
+ if (newKeyCode != AKEYCODE_UNKNOWN) {
+ std::scoped_lock _l(mLock);
+ struct KeyReplacement replacement = {keyCode, deviceId};
+ mReplacedKeys.add(replacement, newKeyCode);
+ keyCode = newKeyCode;
+ metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
+ }
+ } else if (action == AKEY_EVENT_ACTION_UP) {
+ // In order to maintain a consistent stream of up and down events, check to see if the key
+ // going up is one we've replaced in a down event and haven't yet replaced in an up event,
+ // even if the modifier was released between the down and the up events.
+ std::scoped_lock _l(mLock);
+ struct KeyReplacement replacement = {keyCode, deviceId};
+ ssize_t index = mReplacedKeys.indexOfKey(replacement);
+ if (index >= 0) {
+ keyCode = mReplacedKeys.valueAt(index);
+ mReplacedKeys.removeItemsAt(index);
+ metaState &= ~(AMETA_META_ON | AMETA_META_LEFT_ON | AMETA_META_RIGHT_ON);
+ }
+ }
+}
+
+void InputDispatcher::notifyKey(const NotifyKeyArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ ALOGD("notifyKey - eventTime=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32
+ "policyFlags=0x%x, action=0x%x, "
+ "flags=0x%x, keyCode=0x%x, scanCode=0x%x, metaState=0x%x, downTime=%" PRId64,
+ args->eventTime, args->deviceId, args->source, args->displayId, 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;
+ // InputDispatcher tracks and generates key repeats on behalf of
+ // whatever notifies it, so repeatCount should always be set to 0
+ constexpr int32_t repeatCount = 0;
+ 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_FUNCTION) {
+ metaState |= AMETA_FUNCTION_ON;
+ }
+
+ policyFlags |= POLICY_FLAG_TRUSTED;
+
+ int32_t keyCode = args->keyCode;
+ accelerateMetaShortcuts(args->deviceId, args->action, keyCode, metaState);
+
+ KeyEvent event;
+ event.initialize(args->deviceId, args->source, args->displayId, args->action, flags, keyCode,
+ args->scanCode, metaState, repeatCount, args->downTime, args->eventTime);
+
+ android::base::Timer t;
+ mPolicy->interceptKeyBeforeQueueing(&event, /*byref*/ policyFlags);
+ if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
+ ALOGW("Excessive delay in interceptKeyBeforeQueueing; took %s ms",
+ std::to_string(t.duration().count()).c_str());
+ }
+
+ 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();
+ }
+
+ KeyEntry* newEntry =
+ new KeyEntry(args->sequenceNum, args->eventTime, args->deviceId, args->source,
+ args->displayId, policyFlags, args->action, flags, 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=%" PRId64 ", deviceId=%d, source=0x%x, displayId=%" PRId32
+ ", policyFlags=0x%x, "
+ "action=0x%x, actionButton=0x%x, flags=0x%x, metaState=0x%x, buttonState=0x%x, "
+ "edgeFlags=0x%x, xPrecision=%f, yPrecision=%f, xCursorPosition=%f, "
+ "yCursorPosition=%f, downTime=%" PRId64,
+ args->eventTime, args->deviceId, args->source, args->displayId, args->policyFlags,
+ args->action, args->actionButton, args->flags, args->metaState, args->buttonState,
+ args->edgeFlags, args->xPrecision, args->yPrecision, arg->xCursorPosition,
+ args->yCursorPosition, 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->actionButton, args->pointerCount,
+ args->pointerProperties)) {
+ return;
+ }
+
+ uint32_t policyFlags = args->policyFlags;
+ policyFlags |= POLICY_FLAG_TRUSTED;
+
+ android::base::Timer t;
+ mPolicy->interceptMotionBeforeQueueing(args->displayId, args->eventTime, /*byref*/ policyFlags);
+ if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
+ ALOGW("Excessive delay in interceptMotionBeforeQueueing; took %s ms",
+ std::to_string(t.duration().count()).c_str());
+ }
+
+ bool needWake;
+ { // acquire lock
+ mLock.lock();
+
+ if (shouldSendMotionToInputFilterLocked(args)) {
+ mLock.unlock();
+
+ MotionEvent event;
+ event.initialize(args->deviceId, args->source, args->displayId, args->action,
+ args->actionButton, args->flags, args->edgeFlags, args->metaState,
+ args->buttonState, args->classification, 0, 0, args->xPrecision,
+ args->yPrecision, args->xCursorPosition, args->yCursorPosition,
+ 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->sequenceNum, args->eventTime, args->deviceId, args->source,
+ args->displayId, policyFlags, args->action, args->actionButton,
+ args->flags, args->metaState, args->buttonState,
+ args->classification, args->edgeFlags, args->xPrecision,
+ args->yPrecision, args->xCursorPosition, args->yCursorPosition,
+ args->downTime, args->pointerCount, args->pointerProperties,
+ args->pointerCoords, 0, 0);
+
+ needWake = enqueueInboundEventLocked(newEntry);
+ mLock.unlock();
+ } // release lock
+
+ if (needWake) {
+ mLooper->wake();
+ }
+}
+
+bool InputDispatcher::shouldSendMotionToInputFilterLocked(const NotifyMotionArgs* args) {
+ return mInputFilterEnabled;
+}
+
+void InputDispatcher::notifySwitch(const NotifySwitchArgs* args) {
+#if DEBUG_INBOUND_EVENT_DETAILS
+ ALOGD("notifySwitch - eventTime=%" PRId64 ", 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=%" PRId64 ", deviceId=%d", args->eventTime,
+ args->deviceId);
+#endif
+
+ bool needWake;
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ DeviceResetEntry* newEntry =
+ new DeviceResetEntry(args->sequenceNum, 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;
+ }
+
+ std::queue<EventEntry*> injectedEntries;
+ switch (event->getType()) {
+ case AINPUT_EVENT_TYPE_KEY: {
+ KeyEvent keyEvent;
+ keyEvent.initialize(*static_cast<const KeyEvent*>(event));
+ int32_t action = keyEvent.getAction();
+ if (!validateKeyEvent(action)) {
+ return INPUT_EVENT_INJECTION_FAILED;
+ }
+
+ int32_t flags = keyEvent.getFlags();
+ int32_t keyCode = keyEvent.getKeyCode();
+ int32_t metaState = keyEvent.getMetaState();
+ accelerateMetaShortcuts(keyEvent.getDeviceId(), action,
+ /*byref*/ keyCode, /*byref*/ metaState);
+ keyEvent.initialize(keyEvent.getDeviceId(), keyEvent.getSource(),
+ keyEvent.getDisplayId(), action, flags, keyCode,
+ keyEvent.getScanCode(), metaState, keyEvent.getRepeatCount(),
+ keyEvent.getDownTime(), keyEvent.getEventTime());
+
+ if (flags & AKEY_EVENT_FLAG_VIRTUAL_HARD_KEY) {
+ policyFlags |= POLICY_FLAG_VIRTUAL;
+ }
+
+ if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+ android::base::Timer t;
+ mPolicy->interceptKeyBeforeQueueing(&keyEvent, /*byref*/ policyFlags);
+ if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
+ ALOGW("Excessive delay in interceptKeyBeforeQueueing; took %s ms",
+ std::to_string(t.duration().count()).c_str());
+ }
+ }
+
+ mLock.lock();
+ KeyEntry* injectedEntry =
+ new KeyEntry(SYNTHESIZED_EVENT_SEQUENCE_NUM, keyEvent.getEventTime(),
+ keyEvent.getDeviceId(), keyEvent.getSource(),
+ keyEvent.getDisplayId(), policyFlags, action, flags,
+ keyEvent.getKeyCode(), keyEvent.getScanCode(),
+ keyEvent.getMetaState(), keyEvent.getRepeatCount(),
+ keyEvent.getDownTime());
+ injectedEntries.push(injectedEntry);
+ break;
+ }
+
+ case AINPUT_EVENT_TYPE_MOTION: {
+ const MotionEvent* motionEvent = static_cast<const MotionEvent*>(event);
+ int32_t action = motionEvent->getAction();
+ size_t pointerCount = motionEvent->getPointerCount();
+ const PointerProperties* pointerProperties = motionEvent->getPointerProperties();
+ int32_t actionButton = motionEvent->getActionButton();
+ int32_t displayId = motionEvent->getDisplayId();
+ if (!validateMotionEvent(action, actionButton, pointerCount, pointerProperties)) {
+ return INPUT_EVENT_INJECTION_FAILED;
+ }
+
+ if (!(policyFlags & POLICY_FLAG_FILTERED)) {
+ nsecs_t eventTime = motionEvent->getEventTime();
+ android::base::Timer t;
+ mPolicy->interceptMotionBeforeQueueing(displayId, eventTime, /*byref*/ policyFlags);
+ if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
+ ALOGW("Excessive delay in interceptMotionBeforeQueueing; took %s ms",
+ std::to_string(t.duration().count()).c_str());
+ }
+ }
+
+ mLock.lock();
+ const nsecs_t* sampleEventTimes = motionEvent->getSampleEventTimes();
+ const PointerCoords* samplePointerCoords = motionEvent->getSamplePointerCoords();
+ MotionEntry* injectedEntry =
+ new MotionEntry(SYNTHESIZED_EVENT_SEQUENCE_NUM, *sampleEventTimes,
+ motionEvent->getDeviceId(), motionEvent->getSource(),
+ motionEvent->getDisplayId(), policyFlags, action, actionButton,
+ motionEvent->getFlags(), motionEvent->getMetaState(),
+ motionEvent->getButtonState(), motionEvent->getClassification(),
+ motionEvent->getEdgeFlags(), motionEvent->getXPrecision(),
+ motionEvent->getYPrecision(),
+ motionEvent->getRawXCursorPosition(),
+ motionEvent->getRawYCursorPosition(),
+ motionEvent->getDownTime(), uint32_t(pointerCount),
+ pointerProperties, samplePointerCoords,
+ motionEvent->getXOffset(), motionEvent->getYOffset());
+ injectedEntries.push(injectedEntry);
+ for (size_t i = motionEvent->getHistorySize(); i > 0; i--) {
+ sampleEventTimes += 1;
+ samplePointerCoords += pointerCount;
+ MotionEntry* nextInjectedEntry =
+ new MotionEntry(SYNTHESIZED_EVENT_SEQUENCE_NUM, *sampleEventTimes,
+ motionEvent->getDeviceId(), motionEvent->getSource(),
+ motionEvent->getDisplayId(), policyFlags, action,
+ actionButton, motionEvent->getFlags(),
+ motionEvent->getMetaState(), motionEvent->getButtonState(),
+ motionEvent->getClassification(),
+ motionEvent->getEdgeFlags(), motionEvent->getXPrecision(),
+ motionEvent->getYPrecision(),
+ motionEvent->getRawXCursorPosition(),
+ motionEvent->getRawYCursorPosition(),
+ motionEvent->getDownTime(), uint32_t(pointerCount),
+ pointerProperties, samplePointerCoords,
+ motionEvent->getXOffset(), motionEvent->getYOffset());
+ injectedEntries.push(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;
+ injectedEntries.back()->injectionState = injectionState;
+
+ bool needWake = false;
+ while (!injectedEntries.empty()) {
+ needWake |= enqueueInboundEventLocked(injectedEntries.front());
+ injectedEntries.pop();
+ }
+
+ mLock.unlock();
+
+ if (needWake) {
+ mLooper->wake();
+ }
+
+ int32_t injectionResult;
+ { // acquire lock
+ std::unique_lock _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;
+ }
+
+ mInjectionResultAvailable.wait_for(_l, std::chrono::nanoseconds(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;
+ }
+
+ mInjectionSyncFinished.wait_for(_l, std::chrono::nanoseconds(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::setInjectionResult(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;
+ mInjectionResultAvailable.notify_all();
+ }
+}
+
+void InputDispatcher::incrementPendingForegroundDispatches(EventEntry* entry) {
+ InjectionState* injectionState = entry->injectionState;
+ if (injectionState) {
+ injectionState->pendingForegroundDispatches += 1;
+ }
+}
+
+void InputDispatcher::decrementPendingForegroundDispatches(EventEntry* entry) {
+ InjectionState* injectionState = entry->injectionState;
+ if (injectionState) {
+ injectionState->pendingForegroundDispatches -= 1;
+
+ if (injectionState->pendingForegroundDispatches == 0) {
+ mInjectionSyncFinished.notify_all();
+ }
+ }
+}
+
+std::vector<sp<InputWindowHandle>> InputDispatcher::getWindowHandlesLocked(
+ int32_t displayId) const {
+ return getValueByKey(mWindowHandlesByDisplay, displayId);
+}
+
+sp<InputWindowHandle> InputDispatcher::getWindowHandleLocked(
+ const sp<IBinder>& windowHandleToken) const {
+ for (auto& it : mWindowHandlesByDisplay) {
+ const std::vector<sp<InputWindowHandle>> windowHandles = it.second;
+ for (const sp<InputWindowHandle>& windowHandle : windowHandles) {
+ if (windowHandle->getToken() == windowHandleToken) {
+ return windowHandle;
+ }
+ }
+ }
+ return nullptr;
+}
+
+bool InputDispatcher::hasWindowHandleLocked(const sp<InputWindowHandle>& windowHandle) const {
+ for (auto& it : mWindowHandlesByDisplay) {
+ const std::vector<sp<InputWindowHandle>> windowHandles = it.second;
+ for (const sp<InputWindowHandle>& handle : windowHandles) {
+ if (handle->getToken() == windowHandle->getToken()) {
+ if (windowHandle->getInfo()->displayId != it.first) {
+ ALOGE("Found window %s in display %" PRId32
+ ", but it should belong to display %" PRId32,
+ windowHandle->getName().c_str(), it.first,
+ windowHandle->getInfo()->displayId);
+ }
+ return true;
+ }
+ }
+ }
+ return false;
+}
+
+sp<InputChannel> InputDispatcher::getInputChannelLocked(const sp<IBinder>& token) const {
+ size_t count = mInputChannelsByToken.count(token);
+ if (count == 0) {
+ return nullptr;
+ }
+ return mInputChannelsByToken.at(token);
+}
+
+void InputDispatcher::updateWindowHandlesForDisplayLocked(
+ const std::vector<sp<InputWindowHandle>>& inputWindowHandles, int32_t displayId) {
+ if (inputWindowHandles.empty()) {
+ // Remove all handles on a display if there are no windows left.
+ mWindowHandlesByDisplay.erase(displayId);
+ return;
+ }
+
+ // Since we compare the pointer of input window handles across window updates, we need
+ // to make sure the handle object for the same window stays unchanged across updates.
+ const std::vector<sp<InputWindowHandle>>& oldHandles = getWindowHandlesLocked(displayId);
+ std::unordered_map<sp<IBinder>, sp<InputWindowHandle>, IBinderHash> oldHandlesByTokens;
+ for (const sp<InputWindowHandle>& handle : oldHandles) {
+ oldHandlesByTokens[handle->getToken()] = handle;
+ }
+
+ std::vector<sp<InputWindowHandle>> newHandles;
+ for (const sp<InputWindowHandle>& handle : inputWindowHandles) {
+ if (!handle->updateInfo()) {
+ // handle no longer valid
+ continue;
+ }
+
+ const InputWindowInfo* info = handle->getInfo();
+ if ((getInputChannelLocked(handle->getToken()) == nullptr &&
+ info->portalToDisplayId == ADISPLAY_ID_NONE)) {
+ const bool noInputChannel =
+ info->inputFeatures & InputWindowInfo::INPUT_FEATURE_NO_INPUT_CHANNEL;
+ const bool canReceiveInput =
+ !(info->layoutParamsFlags & InputWindowInfo::FLAG_NOT_TOUCHABLE) ||
+ !(info->layoutParamsFlags & InputWindowInfo::FLAG_NOT_FOCUSABLE);
+ if (canReceiveInput && !noInputChannel) {
+ ALOGE("Window handle %s has no registered input channel",
+ handle->getName().c_str());
+ }
+ continue;
+ }
+
+ if (info->displayId != displayId) {
+ ALOGE("Window %s updated by wrong display %d, should belong to display %d",
+ handle->getName().c_str(), displayId, info->displayId);
+ continue;
+ }
+
+ if (oldHandlesByTokens.find(handle->getToken()) != oldHandlesByTokens.end()) {
+ const sp<InputWindowHandle> oldHandle = oldHandlesByTokens.at(handle->getToken());
+ oldHandle->updateFrom(handle);
+ newHandles.push_back(oldHandle);
+ } else {
+ newHandles.push_back(handle);
+ }
+ }
+
+ // Insert or replace
+ mWindowHandlesByDisplay[displayId] = newHandles;
+}
+
+/**
+ * Called from InputManagerService, update window handle list by displayId that can receive input.
+ * A window handle contains information about InputChannel, Touch Region, Types, Focused,...
+ * If set an empty list, remove all handles from the specific display.
+ * For focused handle, check if need to change and send a cancel event to previous one.
+ * For removed handle, check if need to send a cancel event if already in touch.
+ */
+void InputDispatcher::setInputWindows(const std::vector<sp<InputWindowHandle>>& inputWindowHandles,
+ int32_t displayId,
+ const sp<ISetInputWindowsListener>& setInputWindowsListener) {
+#if DEBUG_FOCUS
+ ALOGD("setInputWindows displayId=%" PRId32, displayId);
+#endif
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ // Copy old handles for release if they are no longer present.
+ const std::vector<sp<InputWindowHandle>> oldWindowHandles =
+ getWindowHandlesLocked(displayId);
+
+ updateWindowHandlesForDisplayLocked(inputWindowHandles, displayId);
+
+ sp<InputWindowHandle> newFocusedWindowHandle = nullptr;
+ bool foundHoveredWindow = false;
+ for (const sp<InputWindowHandle>& windowHandle : getWindowHandlesLocked(displayId)) {
+ // Set newFocusedWindowHandle to the top most focused window instead of the last one
+ if (!newFocusedWindowHandle && windowHandle->getInfo()->hasFocus &&
+ windowHandle->getInfo()->visible) {
+ newFocusedWindowHandle = windowHandle;
+ }
+ if (windowHandle == mLastHoverWindowHandle) {
+ foundHoveredWindow = true;
+ }
+ }
+
+ if (!foundHoveredWindow) {
+ mLastHoverWindowHandle = nullptr;
+ }
+
+ sp<InputWindowHandle> oldFocusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+
+ if (oldFocusedWindowHandle != newFocusedWindowHandle) {
+ if (oldFocusedWindowHandle != nullptr) {
+#if DEBUG_FOCUS
+ ALOGD("Focus left window: %s in display %" PRId32,
+ oldFocusedWindowHandle->getName().c_str(), displayId);
+#endif
+ sp<InputChannel> focusedInputChannel =
+ getInputChannelLocked(oldFocusedWindowHandle->getToken());
+ if (focusedInputChannel != nullptr) {
+ CancelationOptions options(CancelationOptions::CANCEL_NON_POINTER_EVENTS,
+ "focus left window");
+ synthesizeCancelationEventsForInputChannelLocked(focusedInputChannel, options);
+ }
+ mFocusedWindowHandlesByDisplay.erase(displayId);
+ }
+ if (newFocusedWindowHandle != nullptr) {
+#if DEBUG_FOCUS
+ ALOGD("Focus entered window: %s in display %" PRId32,
+ newFocusedWindowHandle->getName().c_str(), displayId);
+#endif
+ mFocusedWindowHandlesByDisplay[displayId] = newFocusedWindowHandle;
+ }
+
+ if (mFocusedDisplayId == displayId) {
+ onFocusChangedLocked(oldFocusedWindowHandle, newFocusedWindowHandle);
+ }
+ }
+
+ ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(displayId);
+ if (stateIndex >= 0) {
+ TouchState& state = mTouchStatesByDisplay.editValueAt(stateIndex);
+ for (size_t i = 0; i < state.windows.size();) {
+ TouchedWindow& touchedWindow = state.windows[i];
+ if (!hasWindowHandleLocked(touchedWindow.windowHandle)) {
+#if DEBUG_FOCUS
+ ALOGD("Touched window was removed: %s in display %" PRId32,
+ touchedWindow.windowHandle->getName().c_str(), displayId);
+#endif
+ sp<InputChannel> touchedInputChannel =
+ getInputChannelLocked(touchedWindow.windowHandle->getToken());
+ if (touchedInputChannel != nullptr) {
+ CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+ "touched window was removed");
+ synthesizeCancelationEventsForInputChannelLocked(touchedInputChannel,
+ options);
+ }
+ state.windows.erase(state.windows.begin() + i);
+ } else {
+ ++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 (const sp<InputWindowHandle>& oldWindowHandle : oldWindowHandles) {
+ if (!hasWindowHandleLocked(oldWindowHandle)) {
+#if DEBUG_FOCUS
+ ALOGD("Window went away: %s", oldWindowHandle->getName().c_str());
+#endif
+ oldWindowHandle->releaseChannel();
+ }
+ }
+ } // release lock
+
+ // Wake up poll loop since it may need to make new input dispatching choices.
+ mLooper->wake();
+
+ if (setInputWindowsListener) {
+ setInputWindowsListener->onSetInputWindowsFinished();
+ }
+}
+
+void InputDispatcher::setFocusedApplication(
+ int32_t displayId, const sp<InputApplicationHandle>& inputApplicationHandle) {
+#if DEBUG_FOCUS
+ ALOGD("setFocusedApplication displayId=%" PRId32, displayId);
+#endif
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ sp<InputApplicationHandle> oldFocusedApplicationHandle =
+ getValueByKey(mFocusedApplicationHandlesByDisplay, displayId);
+ if (inputApplicationHandle != nullptr && inputApplicationHandle->updateInfo()) {
+ if (oldFocusedApplicationHandle != inputApplicationHandle) {
+ if (oldFocusedApplicationHandle != nullptr) {
+ resetANRTimeoutsLocked();
+ }
+ mFocusedApplicationHandlesByDisplay[displayId] = inputApplicationHandle;
+ }
+ } else if (oldFocusedApplicationHandle != nullptr) {
+ resetANRTimeoutsLocked();
+ oldFocusedApplicationHandle.clear();
+ mFocusedApplicationHandlesByDisplay.erase(displayId);
+ }
+
+#if DEBUG_FOCUS
+ // logDispatchStateLocked();
+#endif
+ } // release lock
+
+ // Wake up poll loop since it may need to make new input dispatching choices.
+ mLooper->wake();
+}
+
+/**
+ * Sets the focused display, which is responsible for receiving focus-dispatched input events where
+ * the display not specified.
+ *
+ * We track any unreleased events for each window. If a window loses the ability to receive the
+ * released event, we will send a cancel event to it. So when the focused display is changed, we
+ * cancel all the unreleased display-unspecified events for the focused window on the old focused
+ * display. The display-specified events won't be affected.
+ */
+void InputDispatcher::setFocusedDisplay(int32_t displayId) {
+#if DEBUG_FOCUS
+ ALOGD("setFocusedDisplay displayId=%" PRId32, displayId);
+#endif
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ if (mFocusedDisplayId != displayId) {
+ sp<InputWindowHandle> oldFocusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, mFocusedDisplayId);
+ if (oldFocusedWindowHandle != nullptr) {
+ sp<InputChannel> inputChannel =
+ getInputChannelLocked(oldFocusedWindowHandle->getToken());
+ if (inputChannel != nullptr) {
+ CancelationOptions
+ options(CancelationOptions::CANCEL_NON_POINTER_EVENTS,
+ "The display which contains this window no longer has focus.");
+ options.displayId = ADISPLAY_ID_NONE;
+ synthesizeCancelationEventsForInputChannelLocked(inputChannel, options);
+ }
+ }
+ mFocusedDisplayId = displayId;
+
+ // Sanity check
+ sp<InputWindowHandle> newFocusedWindowHandle =
+ getValueByKey(mFocusedWindowHandlesByDisplay, displayId);
+ onFocusChangedLocked(oldFocusedWindowHandle, newFocusedWindowHandle);
+
+ if (newFocusedWindowHandle == nullptr) {
+ ALOGW("Focused display #%" PRId32 " does not have a focused window.", displayId);
+ if (!mFocusedWindowHandlesByDisplay.empty()) {
+ ALOGE("But another display has a focused window:");
+ for (auto& it : mFocusedWindowHandlesByDisplay) {
+ const int32_t displayId = it.first;
+ const sp<InputWindowHandle>& windowHandle = it.second;
+ ALOGE("Display #%" PRId32 " has focused window: '%s'\n", displayId,
+ windowHandle->getName().c_str());
+ }
+ }
+ }
+ }
+
+#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
+ std::scoped_lock _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
+ std::scoped_lock _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<IBinder>& fromToken, const sp<IBinder>& toToken) {
+ if (fromToken == toToken) {
+#if DEBUG_FOCUS
+ ALOGD("Trivial transfer to same window.");
+#endif
+ return true;
+ }
+
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ sp<InputWindowHandle> fromWindowHandle = getWindowHandleLocked(fromToken);
+ sp<InputWindowHandle> toWindowHandle = getWindowHandleLocked(toToken);
+ if (fromWindowHandle == nullptr || toWindowHandle == nullptr) {
+ ALOGW("Cannot transfer focus because from or to window not found.");
+ return false;
+ }
+#if DEBUG_FOCUS
+ ALOGD("transferTouchFocus: fromWindowHandle=%s, toWindowHandle=%s",
+ fromWindowHandle->getName().c_str(), toWindowHandle->getName().c_str());
+#endif
+ 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 d = 0; d < mTouchStatesByDisplay.size(); d++) {
+ TouchState& state = mTouchStatesByDisplay.editValueAt(d);
+ for (size_t i = 0; i < state.windows.size(); i++) {
+ const TouchedWindow& touchedWindow = state.windows[i];
+ if (touchedWindow.windowHandle == fromWindowHandle) {
+ int32_t oldTargetFlags = touchedWindow.targetFlags;
+ BitSet32 pointerIds = touchedWindow.pointerIds;
+
+ state.windows.erase(state.windows.begin() + i);
+
+ int32_t newTargetFlags = oldTargetFlags &
+ (InputTarget::FLAG_FOREGROUND | InputTarget::FLAG_SPLIT |
+ InputTarget::FLAG_DISPATCH_AS_IS);
+ state.addOrUpdateWindow(toWindowHandle, newTargetFlags, pointerIds);
+
+ found = true;
+ goto Found;
+ }
+ }
+ }
+ Found:
+
+ if (!found) {
+#if DEBUG_FOCUS
+ ALOGD("Focus transfer failed because from window did not have focus.");
+#endif
+ return false;
+ }
+
+ sp<InputChannel> fromChannel = getInputChannelLocked(fromToken);
+ sp<InputChannel> toChannel = getInputChannelLocked(toToken);
+ sp<Connection> fromConnection = getConnectionLocked(fromChannel);
+ sp<Connection> toConnection = getConnectionLocked(toChannel);
+ if (fromConnection != nullptr && toConnection != nullptr) {
+ 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();
+
+ mTouchStatesByDisplay.clear();
+ mLastHoverWindowHandle.clear();
+ mReplacedKeys.clear();
+}
+
+void InputDispatcher::logDispatchStateLocked() {
+ std::string dump;
+ dumpDispatchStateLocked(dump);
+
+ std::istringstream stream(dump);
+ std::string line;
+
+ while (std::getline(stream, line, '\n')) {
+ ALOGD("%s", line.c_str());
+ }
+}
+
+void InputDispatcher::dumpDispatchStateLocked(std::string& dump) {
+ dump += StringPrintf(INDENT "DispatchEnabled: %s\n", toString(mDispatchEnabled));
+ dump += StringPrintf(INDENT "DispatchFrozen: %s\n", toString(mDispatchFrozen));
+ dump += StringPrintf(INDENT "InputFilterEnabled: %s\n", toString(mInputFilterEnabled));
+ dump += StringPrintf(INDENT "FocusedDisplayId: %" PRId32 "\n", mFocusedDisplayId);
+
+ if (!mFocusedApplicationHandlesByDisplay.empty()) {
+ dump += StringPrintf(INDENT "FocusedApplications:\n");
+ for (auto& it : mFocusedApplicationHandlesByDisplay) {
+ const int32_t displayId = it.first;
+ const sp<InputApplicationHandle>& applicationHandle = it.second;
+ dump += StringPrintf(INDENT2 "displayId=%" PRId32
+ ", name='%s', dispatchingTimeout=%0.3fms\n",
+ displayId, applicationHandle->getName().c_str(),
+ applicationHandle->getDispatchingTimeout(
+ DEFAULT_INPUT_DISPATCHING_TIMEOUT) /
+ 1000000.0);
+ }
+ } else {
+ dump += StringPrintf(INDENT "FocusedApplications: <none>\n");
+ }
+
+ if (!mFocusedWindowHandlesByDisplay.empty()) {
+ dump += StringPrintf(INDENT "FocusedWindows:\n");
+ for (auto& it : mFocusedWindowHandlesByDisplay) {
+ const int32_t displayId = it.first;
+ const sp<InputWindowHandle>& windowHandle = it.second;
+ dump += StringPrintf(INDENT2 "displayId=%" PRId32 ", name='%s'\n", displayId,
+ windowHandle->getName().c_str());
+ }
+ } else {
+ dump += StringPrintf(INDENT "FocusedWindows: <none>\n");
+ }
+
+ if (!mTouchStatesByDisplay.isEmpty()) {
+ dump += StringPrintf(INDENT "TouchStatesByDisplay:\n");
+ for (size_t i = 0; i < mTouchStatesByDisplay.size(); i++) {
+ const TouchState& state = mTouchStatesByDisplay.valueAt(i);
+ dump += StringPrintf(INDENT2 "%d: down=%s, split=%s, deviceId=%d, source=0x%08x\n",
+ state.displayId, toString(state.down), toString(state.split),
+ state.deviceId, state.source);
+ if (!state.windows.empty()) {
+ dump += INDENT3 "Windows:\n";
+ for (size_t i = 0; i < state.windows.size(); i++) {
+ const TouchedWindow& touchedWindow = state.windows[i];
+ dump += StringPrintf(INDENT4
+ "%zu: name='%s', pointerIds=0x%0x, targetFlags=0x%x\n",
+ i, touchedWindow.windowHandle->getName().c_str(),
+ touchedWindow.pointerIds.value, touchedWindow.targetFlags);
+ }
+ } else {
+ dump += INDENT3 "Windows: <none>\n";
+ }
+ if (!state.portalWindows.empty()) {
+ dump += INDENT3 "Portal windows:\n";
+ for (size_t i = 0; i < state.portalWindows.size(); i++) {
+ const sp<InputWindowHandle> portalWindowHandle = state.portalWindows[i];
+ dump += StringPrintf(INDENT4 "%zu: name='%s'\n", i,
+ portalWindowHandle->getName().c_str());
+ }
+ }
+ }
+ } else {
+ dump += INDENT "TouchStates: <no displays touched>\n";
+ }
+
+ if (!mWindowHandlesByDisplay.empty()) {
+ for (auto& it : mWindowHandlesByDisplay) {
+ const std::vector<sp<InputWindowHandle>> windowHandles = it.second;
+ dump += StringPrintf(INDENT "Display: %" PRId32 "\n", it.first);
+ if (!windowHandles.empty()) {
+ dump += INDENT2 "Windows:\n";
+ for (size_t i = 0; i < windowHandles.size(); i++) {
+ const sp<InputWindowHandle>& windowHandle = windowHandles[i];
+ const InputWindowInfo* windowInfo = windowHandle->getInfo();
+
+ dump += StringPrintf(INDENT3 "%zu: name='%s', displayId=%d, "
+ "portalToDisplayId=%d, paused=%s, hasFocus=%s, "
+ "hasWallpaper=%s, "
+ "visible=%s, canReceiveKeys=%s, flags=0x%08x, "
+ "type=0x%08x, layer=%d, "
+ "frame=[%d,%d][%d,%d], globalScale=%f, "
+ "windowScale=(%f,%f), "
+ "touchableRegion=",
+ i, windowInfo->name.c_str(), windowInfo->displayId,
+ windowInfo->portalToDisplayId,
+ 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->globalScaleFactor, windowInfo->windowXScale,
+ windowInfo->windowYScale);
+ dumpRegion(dump, windowInfo->touchableRegion);
+ dump += StringPrintf(", inputFeatures=0x%08x", windowInfo->inputFeatures);
+ dump += StringPrintf(", ownerPid=%d, ownerUid=%d, dispatchingTimeout=%0.3fms\n",
+ windowInfo->ownerPid, windowInfo->ownerUid,
+ windowInfo->dispatchingTimeout / 1000000.0);
+ }
+ } else {
+ dump += INDENT2 "Windows: <none>\n";
+ }
+ }
+ } else {
+ dump += INDENT "Displays: <none>\n";
+ }
+
+ if (!mGlobalMonitorsByDisplay.empty() || !mGestureMonitorsByDisplay.empty()) {
+ for (auto& it : mGlobalMonitorsByDisplay) {
+ const std::vector<Monitor>& monitors = it.second;
+ dump += StringPrintf(INDENT "Global monitors in display %" PRId32 ":\n", it.first);
+ dumpMonitors(dump, monitors);
+ }
+ for (auto& it : mGestureMonitorsByDisplay) {
+ const std::vector<Monitor>& monitors = it.second;
+ dump += StringPrintf(INDENT "Gesture monitors in display %" PRId32 ":\n", it.first);
+ dumpMonitors(dump, monitors);
+ }
+ } else {
+ dump += INDENT "Monitors: <none>\n";
+ }
+
+ nsecs_t currentTime = now();
+
+ // Dump recently dispatched or dropped events from oldest to newest.
+ if (!mRecentQueue.empty()) {
+ dump += StringPrintf(INDENT "RecentQueue: length=%zu\n", mRecentQueue.size());
+ for (EventEntry* entry : mRecentQueue) {
+ dump += INDENT2;
+ entry->appendDescription(dump);
+ dump += StringPrintf(", age=%0.1fms\n", (currentTime - entry->eventTime) * 0.000001f);
+ }
+ } else {
+ dump += INDENT "RecentQueue: <empty>\n";
+ }
+
+ // Dump event currently being dispatched.
+ if (mPendingEvent) {
+ dump += INDENT "PendingEvent:\n";
+ dump += INDENT2;
+ mPendingEvent->appendDescription(dump);
+ dump += StringPrintf(", age=%0.1fms\n",
+ (currentTime - mPendingEvent->eventTime) * 0.000001f);
+ } else {
+ dump += INDENT "PendingEvent: <none>\n";
+ }
+
+ // Dump inbound events from oldest to newest.
+ if (!mInboundQueue.empty()) {
+ dump += StringPrintf(INDENT "InboundQueue: length=%zu\n", mInboundQueue.size());
+ for (EventEntry* entry : mInboundQueue) {
+ dump += INDENT2;
+ entry->appendDescription(dump);
+ dump += StringPrintf(", age=%0.1fms\n", (currentTime - entry->eventTime) * 0.000001f);
+ }
+ } else {
+ dump += INDENT "InboundQueue: <empty>\n";
+ }
+
+ if (!mReplacedKeys.isEmpty()) {
+ dump += INDENT "ReplacedKeys:\n";
+ for (size_t i = 0; i < mReplacedKeys.size(); i++) {
+ const KeyReplacement& replacement = mReplacedKeys.keyAt(i);
+ int32_t newKeyCode = mReplacedKeys.valueAt(i);
+ dump += StringPrintf(INDENT2 "%zu: originalKeyCode=%d, deviceId=%d, newKeyCode=%d\n", i,
+ replacement.keyCode, replacement.deviceId, newKeyCode);
+ }
+ } else {
+ dump += INDENT "ReplacedKeys: <empty>\n";
+ }
+
+ if (!mConnectionsByFd.empty()) {
+ dump += INDENT "Connections:\n";
+ for (const auto& pair : mConnectionsByFd) {
+ const sp<Connection>& connection = pair.second;
+ dump += StringPrintf(INDENT2 "%i: channelName='%s', windowName='%s', "
+ "status=%s, monitor=%s, inputPublisherBlocked=%s\n",
+ pair.first, connection->getInputChannelName().c_str(),
+ connection->getWindowName().c_str(), connection->getStatusLabel(),
+ toString(connection->monitor),
+ toString(connection->inputPublisherBlocked));
+
+ if (!connection->outboundQueue.empty()) {
+ dump += StringPrintf(INDENT3 "OutboundQueue: length=%zu\n",
+ connection->outboundQueue.size());
+ for (DispatchEntry* entry : connection->outboundQueue) {
+ dump.append(INDENT4);
+ entry->eventEntry->appendDescription(dump);
+ dump += StringPrintf(", targetFlags=0x%08x, resolvedAction=%d, age=%0.1fms\n",
+ entry->targetFlags, entry->resolvedAction,
+ (currentTime - entry->eventEntry->eventTime) * 0.000001f);
+ }
+ } else {
+ dump += INDENT3 "OutboundQueue: <empty>\n";
+ }
+
+ if (!connection->waitQueue.empty()) {
+ dump += StringPrintf(INDENT3 "WaitQueue: length=%zu\n",
+ connection->waitQueue.size());
+ for (DispatchEntry* entry : connection->waitQueue) {
+ dump += INDENT4;
+ entry->eventEntry->appendDescription(dump);
+ dump += StringPrintf(", 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 += INDENT3 "WaitQueue: <empty>\n";
+ }
+ }
+ } else {
+ dump += INDENT "Connections: <none>\n";
+ }
+
+ if (isAppSwitchPendingLocked()) {
+ dump += StringPrintf(INDENT "AppSwitch: pending, due in %0.1fms\n",
+ (mAppSwitchDueTime - now()) / 1000000.0);
+ } else {
+ dump += INDENT "AppSwitch: not pending\n";
+ }
+
+ dump += INDENT "Configuration:\n";
+ dump += StringPrintf(INDENT2 "KeyRepeatDelay: %0.1fms\n", mConfig.keyRepeatDelay * 0.000001f);
+ dump += StringPrintf(INDENT2 "KeyRepeatTimeout: %0.1fms\n",
+ mConfig.keyRepeatTimeout * 0.000001f);
+}
+
+void InputDispatcher::dumpMonitors(std::string& dump, const std::vector<Monitor>& monitors) {
+ const size_t numMonitors = monitors.size();
+ for (size_t i = 0; i < numMonitors; i++) {
+ const Monitor& monitor = monitors[i];
+ const sp<InputChannel>& channel = monitor.inputChannel;
+ dump += StringPrintf(INDENT2 "%zu: '%s', ", i, channel->getName().c_str());
+ dump += "\n";
+ }
+}
+
+status_t InputDispatcher::registerInputChannel(const sp<InputChannel>& inputChannel,
+ int32_t displayId) {
+#if DEBUG_REGISTRATION
+ ALOGD("channel '%s' ~ registerInputChannel - displayId=%" PRId32,
+ inputChannel->getName().c_str(), displayId);
+#endif
+
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+ sp<Connection> existingConnection = getConnectionLocked(inputChannel);
+ if (existingConnection != nullptr) {
+ ALOGW("Attempted to register already registered input channel '%s'",
+ inputChannel->getName().c_str());
+ return BAD_VALUE;
+ }
+
+ sp<Connection> connection = new Connection(inputChannel, false /*monitor*/);
+
+ int fd = inputChannel->getFd();
+ mConnectionsByFd[fd] = connection;
+ mInputChannelsByToken[inputChannel->getToken()] = 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::registerInputMonitor(const sp<InputChannel>& inputChannel,
+ int32_t displayId, bool isGestureMonitor) {
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+
+ if (displayId < 0) {
+ ALOGW("Attempted to register input monitor without a specified display.");
+ return BAD_VALUE;
+ }
+
+ if (inputChannel->getToken() == nullptr) {
+ ALOGW("Attempted to register input monitor without an identifying token.");
+ return BAD_VALUE;
+ }
+
+ sp<Connection> connection = new Connection(inputChannel, true /*monitor*/);
+
+ const int fd = inputChannel->getFd();
+ mConnectionsByFd[fd] = connection;
+ mInputChannelsByToken[inputChannel->getToken()] = inputChannel;
+
+ auto& monitorsByDisplay =
+ isGestureMonitor ? mGestureMonitorsByDisplay : mGlobalMonitorsByDisplay;
+ monitorsByDisplay[displayId].emplace_back(inputChannel);
+
+ mLooper->addFd(fd, 0, ALOOPER_EVENT_INPUT, handleReceiveCallback, this);
+ }
+ // 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().c_str());
+#endif
+
+ { // acquire lock
+ std::scoped_lock _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) {
+ sp<Connection> connection = getConnectionLocked(inputChannel);
+ if (connection == nullptr) {
+ ALOGW("Attempted to unregister already unregistered input channel '%s'",
+ inputChannel->getName().c_str());
+ return BAD_VALUE;
+ }
+
+ const bool removed = removeByValue(mConnectionsByFd, connection);
+ ALOG_ASSERT(removed);
+ mInputChannelsByToken.erase(inputChannel->getToken());
+
+ 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) {
+ removeMonitorChannelLocked(inputChannel, mGlobalMonitorsByDisplay);
+ removeMonitorChannelLocked(inputChannel, mGestureMonitorsByDisplay);
+}
+
+void InputDispatcher::removeMonitorChannelLocked(
+ const sp<InputChannel>& inputChannel,
+ std::unordered_map<int32_t, std::vector<Monitor>>& monitorsByDisplay) {
+ for (auto it = monitorsByDisplay.begin(); it != monitorsByDisplay.end();) {
+ std::vector<Monitor>& monitors = it->second;
+ const size_t numMonitors = monitors.size();
+ for (size_t i = 0; i < numMonitors; i++) {
+ if (monitors[i].inputChannel == inputChannel) {
+ monitors.erase(monitors.begin() + i);
+ break;
+ }
+ }
+ if (monitors.empty()) {
+ it = monitorsByDisplay.erase(it);
+ } else {
+ ++it;
+ }
+ }
+}
+
+status_t InputDispatcher::pilferPointers(const sp<IBinder>& token) {
+ { // acquire lock
+ std::scoped_lock _l(mLock);
+ std::optional<int32_t> foundDisplayId = findGestureMonitorDisplayByTokenLocked(token);
+
+ if (!foundDisplayId) {
+ ALOGW("Attempted to pilfer pointers from an un-registered monitor or invalid token");
+ return BAD_VALUE;
+ }
+ int32_t displayId = foundDisplayId.value();
+
+ ssize_t stateIndex = mTouchStatesByDisplay.indexOfKey(displayId);
+ if (stateIndex < 0) {
+ ALOGW("Failed to pilfer pointers: no pointers on display %" PRId32 ".", displayId);
+ return BAD_VALUE;
+ }
+
+ TouchState& state = mTouchStatesByDisplay.editValueAt(stateIndex);
+ std::optional<int32_t> foundDeviceId;
+ for (const TouchedMonitor& touchedMonitor : state.gestureMonitors) {
+ if (touchedMonitor.monitor.inputChannel->getToken() == token) {
+ foundDeviceId = state.deviceId;
+ }
+ }
+ if (!foundDeviceId || !state.down) {
+ ALOGW("Attempted to pilfer points from a monitor without any on-going pointer streams."
+ " Ignoring.");
+ return BAD_VALUE;
+ }
+ int32_t deviceId = foundDeviceId.value();
+
+ // Send cancel events to all the input channels we're stealing from.
+ CancelationOptions options(CancelationOptions::CANCEL_POINTER_EVENTS,
+ "gesture monitor stole pointer stream");
+ options.deviceId = deviceId;
+ options.displayId = displayId;
+ for (const TouchedWindow& window : state.windows) {
+ sp<InputChannel> channel = getInputChannelLocked(window.windowHandle->getToken());
+ synthesizeCancelationEventsForInputChannelLocked(channel, options);
+ }
+ // Then clear the current touch state so we stop dispatching to them as well.
+ state.filterNonMonitors();
+ }
+ return OK;
+}
+
+std::optional<int32_t> InputDispatcher::findGestureMonitorDisplayByTokenLocked(
+ const sp<IBinder>& token) {
+ for (const auto& it : mGestureMonitorsByDisplay) {
+ const std::vector<Monitor>& monitors = it.second;
+ for (const Monitor& monitor : monitors) {
+ if (monitor.inputChannel->getToken() == token) {
+ return it.first;
+ }
+ }
+ }
+ return std::nullopt;
+}
+
+sp<InputDispatcher::Connection> InputDispatcher::getConnectionLocked(
+ const sp<InputChannel>& inputChannel) {
+ if (inputChannel == nullptr) {
+ return nullptr;
+ }
+
+ for (const auto& pair : mConnectionsByFd) {
+ sp<Connection> connection = pair.second;
+ if (connection->inputChannel->getToken() == inputChannel->getToken()) {
+ return connection;
+ }
+ }
+
+ return nullptr;
+}
+
+void InputDispatcher::onDispatchCycleFinishedLocked(nsecs_t currentTime,
+ const sp<Connection>& connection, uint32_t seq,
+ bool handled) {
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doDispatchCycleFinishedLockedInterruptible);
+ commandEntry->connection = connection;
+ commandEntry->eventTime = currentTime;
+ commandEntry->seq = seq;
+ commandEntry->handled = handled;
+ postCommandLocked(std::move(commandEntry));
+}
+
+void InputDispatcher::onDispatchCycleBrokenLocked(nsecs_t currentTime,
+ const sp<Connection>& connection) {
+ ALOGE("channel '%s' ~ Channel is unrecoverably broken and will be disposed!",
+ connection->getInputChannelName().c_str());
+
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doNotifyInputChannelBrokenLockedInterruptible);
+ commandEntry->connection = connection;
+ postCommandLocked(std::move(commandEntry));
+}
+
+void InputDispatcher::onFocusChangedLocked(const sp<InputWindowHandle>& oldFocus,
+ const sp<InputWindowHandle>& newFocus) {
+ sp<IBinder> oldToken = oldFocus != nullptr ? oldFocus->getToken() : nullptr;
+ sp<IBinder> newToken = newFocus != nullptr ? newFocus->getToken() : nullptr;
+ std::unique_ptr<CommandEntry> commandEntry = std::make_unique<CommandEntry>(
+ &InputDispatcher::doNotifyFocusChangedLockedInterruptible);
+ commandEntry->oldToken = oldToken;
+ commandEntry->newToken = newToken;
+ postCommandLocked(std::move(commandEntry));
+}
+
+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",
+ getApplicationWindowLabel(applicationHandle, windowHandle).c_str(), dispatchLatency,
+ waitDuration, reason);
+
+ // Capture a record of the InputDispatcher state at the time of the ANR.
+ time_t t = time(nullptr);
+ struct tm tm;
+ localtime_r(&t, &tm);
+ char timestr[64];
+ strftime(timestr, sizeof(timestr), "%F %T", &tm);
+ mLastANRState.clear();
+ mLastANRState += INDENT "ANR:\n";
+ mLastANRState += StringPrintf(INDENT2 "Time: %s\n", timestr);
+ mLastANRState +=
+ StringPrintf(INDENT2 "Window: %s\n",
+ getApplicationWindowLabel(applicationHandle, windowHandle).c_str());
+ mLastANRState += StringPrintf(INDENT2 "DispatchLatency: %0.1fms\n", dispatchLatency);
+ mLastANRState += StringPrintf(INDENT2 "WaitDuration: %0.1fms\n", waitDuration);
+ mLastANRState += StringPrintf(INDENT2 "Reason: %s\n", reason);
+ dumpDispatchStateLocked(mLastANRState);
+
+ std::unique_ptr<CommandEntry> commandEntry =
+ std::make_unique<CommandEntry>(&InputDispatcher::doNotifyANRLockedInterruptible);
+ commandEntry->inputApplicationHandle = applicationHandle;
+ commandEntry->inputChannel =
+ windowHandle != nullptr ? getInputChannelLocked(windowHandle->getToken()) : nullptr;
+ commandEntry->reason = reason;
+ postCommandLocked(std::move(commandEntry));
+}
+
+void InputDispatcher::doNotifyConfigurationChangedLockedInterruptible(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->inputChannel->getToken());
+
+ mLock.lock();
+ }
+}
+
+void InputDispatcher::doNotifyFocusChangedLockedInterruptible(CommandEntry* commandEntry) {
+ sp<IBinder> oldToken = commandEntry->oldToken;
+ sp<IBinder> newToken = commandEntry->newToken;
+ mLock.unlock();
+ mPolicy->notifyFocusChanged(oldToken, newToken);
+ mLock.lock();
+}
+
+void InputDispatcher::doNotifyANRLockedInterruptible(CommandEntry* commandEntry) {
+ mLock.unlock();
+
+ nsecs_t newTimeout =
+ mPolicy->notifyANR(commandEntry->inputApplicationHandle,
+ commandEntry->inputChannel ? commandEntry->inputChannel->getToken()
+ : nullptr,
+ commandEntry->reason);
+
+ mLock.lock();
+
+ resumeAfterTargetsNotReadyTimeoutLocked(newTimeout, commandEntry->inputChannel);
+}
+
+void InputDispatcher::doInterceptKeyBeforeDispatchingLockedInterruptible(
+ CommandEntry* commandEntry) {
+ KeyEntry* entry = commandEntry->keyEntry;
+
+ KeyEvent event;
+ initializeKeyEvent(&event, entry);
+
+ mLock.unlock();
+
+ android::base::Timer t;
+ sp<IBinder> token = commandEntry->inputChannel != nullptr
+ ? commandEntry->inputChannel->getToken()
+ : nullptr;
+ nsecs_t delay = mPolicy->interceptKeyBeforeDispatching(token, &event, entry->policyFlags);
+ if (t.duration() > SLOW_INTERCEPTION_THRESHOLD) {
+ ALOGW("Excessive delay in interceptKeyBeforeDispatching; took %s ms",
+ std::to_string(t.duration().count()).c_str());
+ }
+
+ 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::doOnPointerDownOutsideFocusLockedInterruptible(CommandEntry* commandEntry) {
+ mLock.unlock();
+ mPolicy->onPointerDownOutsideFocus(commandEntry->newToken);
+ mLock.lock();
+}
+
+void InputDispatcher::doDispatchCycleFinishedLockedInterruptible(CommandEntry* commandEntry) {
+ sp<Connection> connection = commandEntry->connection;
+ const nsecs_t finishTime = commandEntry->eventTime;
+ uint32_t seq = commandEntry->seq;
+ const bool handled = commandEntry->handled;
+
+ // Handle post-event policy actions.
+ std::deque<InputDispatcher::DispatchEntry*>::iterator dispatchEntryIt =
+ connection->findWaitQueueEntry(seq);
+ if (dispatchEntryIt == connection->waitQueue.end()) {
+ return;
+ }
+ DispatchEntry* dispatchEntry = *dispatchEntryIt;
+
+ nsecs_t eventDuration = finishTime - dispatchEntry->deliveryTime;
+ if (eventDuration > SLOW_EVENT_PROCESSING_WARNING_TIMEOUT) {
+ std::string msg =
+ StringPrintf("Window '%s' spent %0.1fms processing the last input event: ",
+ connection->getWindowName().c_str(), eventDuration * 0.000001f);
+ dispatchEntry->eventEntry->appendDescription(msg);
+ ALOGI("%s", msg.c_str());
+ }
+
+ 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.
+ dispatchEntryIt = connection->findWaitQueueEntry(seq);
+ if (dispatchEntryIt != connection->waitQueue.end()) {
+ dispatchEntry = *dispatchEntryIt;
+ connection->waitQueue.erase(dispatchEntryIt);
+ traceWaitQueueLength(connection);
+ if (restartEvent && connection->status == Connection::STATUS_NORMAL) {
+ connection->outboundQueue.push_front(dispatchEntry);
+ traceOutboundQueueLength(connection);
+ } else {
+ releaseDispatchEntry(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) {
+ if (!handled) {
+ // Report the key as unhandled, since the fallback was not handled.
+ mReporter->reportUnhandledKey(keyEntry->sequenceNum);
+ }
+ return false;
+ }
+
+ // 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->inputChannel->getToken(), &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->inputChannel->getToken(), &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
+ {
+ std::string msg;
+ const KeyedVector<int32_t, int32_t>& fallbackKeys =
+ connection->inputState.getFallbackKeys();
+ for (size_t i = 0; i < fallbackKeys.size(); i++) {
+ msg += StringPrintf(", %d->%d", fallbackKeys.keyAt(i), fallbackKeys.valueAt(i));
+ }
+ ALOGD("Unhandled key event: %zu currently tracked fallback keys%s.",
+ fallbackKeys.size(), msg.c_str());
+ }
+#endif
+
+ if (fallback) {
+ // Restart the dispatch cycle using the fallback key.
+ keyEntry->eventTime = event.getEventTime();
+ keyEntry->deviceId = event.getDeviceId();
+ keyEntry->source = event.getSource();
+ keyEntry->displayId = event.getDisplayId();
+ 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
+
+ // Report the key as unhandled, since there is no fallback key.
+ mReporter->reportUnhandledKey(keyEntry->sequenceNum);
+ }
+ }
+ 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->displayId, entry->action, entry->flags,
+ entry->keyCode, entry->scanCode, entry->metaState, entry->repeatCount,
+ entry->downTime, entry->eventTime);
+}
+
+void InputDispatcher::updateDispatchStatistics(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() {
+ if (ATRACE_ENABLED()) {
+ ATRACE_INT("iq", mInboundQueue.size());
+ }
+}
+
+void InputDispatcher::traceOutboundQueueLength(const sp<Connection>& connection) {
+ if (ATRACE_ENABLED()) {
+ char counterName[40];
+ snprintf(counterName, sizeof(counterName), "oq:%s", connection->getWindowName().c_str());
+ ATRACE_INT(counterName, connection->outboundQueue.size());
+ }
+}
+
+void InputDispatcher::traceWaitQueueLength(const sp<Connection>& connection) {
+ if (ATRACE_ENABLED()) {
+ char counterName[40];
+ snprintf(counterName, sizeof(counterName), "wq:%s", connection->getWindowName().c_str());
+ ATRACE_INT(counterName, connection->waitQueue.size());
+ }
+}
+
+void InputDispatcher::dump(std::string& dump) {
+ std::scoped_lock _l(mLock);
+
+ dump += "Input Dispatcher State:\n";
+ dumpDispatchStateLocked(dump);
+
+ if (!mLastANRState.empty()) {
+ dump += "\nInput Dispatcher State at time of last ANR:\n";
+ dump += mLastANRState;
+ }
+}
+
+void InputDispatcher::monitor() {
+ // Acquire and release the lock to ensure that the dispatcher has not deadlocked.
+ std::unique_lock _l(mLock);
+ mLooper->wake();
+ mDispatcherIsAlive.wait(_l);
+}
+
+// --- 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(uint32_t sequenceNum, int32_t type, nsecs_t eventTime,
+ uint32_t policyFlags)
+ : sequenceNum(sequenceNum),
+ refCount(1),
+ type(type),
+ eventTime(eventTime),
+ policyFlags(policyFlags),
+ injectionState(nullptr),
+ 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 = nullptr;
+ }
+}
+
+// --- InputDispatcher::ConfigurationChangedEntry ---
+
+InputDispatcher::ConfigurationChangedEntry::ConfigurationChangedEntry(uint32_t sequenceNum,
+ nsecs_t eventTime)
+ : EventEntry(sequenceNum, TYPE_CONFIGURATION_CHANGED, eventTime, 0) {}
+
+InputDispatcher::ConfigurationChangedEntry::~ConfigurationChangedEntry() {}
+
+void InputDispatcher::ConfigurationChangedEntry::appendDescription(std::string& msg) const {
+ msg += StringPrintf("ConfigurationChangedEvent(), policyFlags=0x%08x", policyFlags);
+}
+
+// --- InputDispatcher::DeviceResetEntry ---
+
+InputDispatcher::DeviceResetEntry::DeviceResetEntry(uint32_t sequenceNum, nsecs_t eventTime,
+ int32_t deviceId)
+ : EventEntry(sequenceNum, TYPE_DEVICE_RESET, eventTime, 0), deviceId(deviceId) {}
+
+InputDispatcher::DeviceResetEntry::~DeviceResetEntry() {}
+
+void InputDispatcher::DeviceResetEntry::appendDescription(std::string& msg) const {
+ msg += StringPrintf("DeviceResetEvent(deviceId=%d), policyFlags=0x%08x", deviceId, policyFlags);
+}
+
+// --- InputDispatcher::KeyEntry ---
+
+InputDispatcher::KeyEntry::KeyEntry(uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId,
+ uint32_t source, int32_t displayId, 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(sequenceNum, TYPE_KEY, eventTime, policyFlags),
+ deviceId(deviceId),
+ source(source),
+ displayId(displayId),
+ 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(std::string& msg) const {
+ msg += StringPrintf("KeyEvent(deviceId=%d, source=0x%08x, displayId=%" PRId32 ", action=%s, "
+ "flags=0x%08x, keyCode=%d, scanCode=%d, metaState=0x%08x, "
+ "repeatCount=%d), policyFlags=0x%08x",
+ deviceId, source, displayId, keyActionToString(action).c_str(), flags,
+ keyCode, scanCode, metaState, repeatCount, policyFlags);
+}
+
+void InputDispatcher::KeyEntry::recycle() {
+ releaseInjectionState();
+
+ dispatchInProgress = false;
+ syntheticRepeat = false;
+ interceptKeyResult = KeyEntry::INTERCEPT_KEY_RESULT_UNKNOWN;
+ interceptKeyWakeupTime = 0;
+}
+
+// --- InputDispatcher::MotionEntry ---
+
+InputDispatcher::MotionEntry::MotionEntry(
+ uint32_t sequenceNum, nsecs_t eventTime, int32_t deviceId, uint32_t source,
+ int32_t displayId, uint32_t policyFlags, int32_t action, int32_t actionButton,
+ int32_t flags, int32_t metaState, int32_t buttonState, MotionClassification classification,
+ int32_t edgeFlags, float xPrecision, float yPrecision, float xCursorPosition,
+ float yCursorPosition, nsecs_t downTime, uint32_t pointerCount,
+ const PointerProperties* pointerProperties, const PointerCoords* pointerCoords,
+ float xOffset, float yOffset)
+ : EventEntry(sequenceNum, TYPE_MOTION, eventTime, policyFlags),
+ eventTime(eventTime),
+ deviceId(deviceId),
+ source(source),
+ displayId(displayId),
+ action(action),
+ actionButton(actionButton),
+ flags(flags),
+ metaState(metaState),
+ buttonState(buttonState),
+ classification(classification),
+ edgeFlags(edgeFlags),
+ xPrecision(xPrecision),
+ yPrecision(yPrecision),
+ xCursorPosition(xCursorPosition),
+ yCursorPosition(yCursorPosition),
+ downTime(downTime),
+ pointerCount(pointerCount) {
+ for (uint32_t i = 0; i < pointerCount; i++) {
+ this->pointerProperties[i].copyFrom(pointerProperties[i]);
+ this->pointerCoords[i].copyFrom(pointerCoords[i]);
+ if (xOffset || yOffset) {
+ this->pointerCoords[i].applyOffset(xOffset, yOffset);
+ }
+ }
+}
+
+InputDispatcher::MotionEntry::~MotionEntry() {}
+
+void InputDispatcher::MotionEntry::appendDescription(std::string& msg) const {
+ msg += StringPrintf("MotionEvent(deviceId=%d, source=0x%08x, displayId=%" PRId32
+ ", action=%s, actionButton=0x%08x, flags=0x%08x, metaState=0x%08x, "
+ "buttonState=0x%08x, "
+ "classification=%s, edgeFlags=0x%08x, xPrecision=%.1f, yPrecision=%.1f, "
+ "xCursorPosition=%0.1f, yCursorPosition=%0.1f, pointers=[",
+ deviceId, source, displayId, motionActionToString(action).c_str(),
+ actionButton, flags, metaState, buttonState,
+ motionClassificationToString(classification), edgeFlags, xPrecision,
+ yPrecision, xCursorPosition, yCursorPosition);
+
+ for (uint32_t i = 0; i < pointerCount; i++) {
+ if (i) {
+ msg += ", ";
+ }
+ msg += StringPrintf("%d: (%.1f, %.1f)", pointerProperties[i].id, pointerCoords[i].getX(),
+ pointerCoords[i].getY());
+ }
+ msg += StringPrintf("]), policyFlags=0x%08x", policyFlags);
+}
+
+// --- InputDispatcher::DispatchEntry ---
+
+volatile int32_t InputDispatcher::DispatchEntry::sNextSeqAtomic;
+
+InputDispatcher::DispatchEntry::DispatchEntry(EventEntry* eventEntry, int32_t targetFlags,
+ float xOffset, float yOffset, float globalScaleFactor,
+ float windowXScale, float windowYScale)
+ : seq(nextSeq()),
+ eventEntry(eventEntry),
+ targetFlags(targetFlags),
+ xOffset(xOffset),
+ yOffset(yOffset),
+ globalScaleFactor(globalScaleFactor),
+ windowXScale(windowXScale),
+ windowYScale(windowYScale),
+ 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.empty() && mMotionMementos.empty();
+}
+
+bool InputDispatcher::InputState::isHovering(int32_t deviceId, uint32_t source,
+ int32_t displayId) const {
+ for (const MotionMemento& memento : mMotionMementos) {
+ 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.erase(mKeyMementos.begin() + 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.erase(mKeyMementos.begin() + 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.erase(mMotionMementos.begin() + index);
+ return true;
+ }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("Dropping inconsistent motion up or cancel event: deviceId=%d, source=%08x, "
+ "displayId=%" PRId32 ", actionMasked=%d",
+ entry->deviceId, entry->source, entry->displayId, actionMasked);
+#endif
+ return false;
+ }
+
+ case AMOTION_EVENT_ACTION_DOWN: {
+ ssize_t index = findMotionMemento(entry, false /*hovering*/);
+ if (index >= 0) {
+ mMotionMementos.erase(mMotionMementos.begin() + 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: {
+ if (entry->source & AINPUT_SOURCE_CLASS_NAVIGATION) {
+ // Trackballs can send MOVE events with a corresponding DOWN or UP. There's no need
+ // to generate cancellation events for these since they're based in relative rather
+ // than absolute units.
+ return true;
+ }
+
+ ssize_t index = findMotionMemento(entry, false /*hovering*/);
+
+ if (entry->source & AINPUT_SOURCE_CLASS_JOYSTICK) {
+ // Joysticks can send MOVE events without a corresponding DOWN or UP. Since all
+ // joystick axes are normalized to [-1, 1] we can trust that 0 means it's neutral.
+ // Any other value and we need to track the motion so we can send cancellation
+ // events for anything generating fallback events (e.g. DPad keys for joystick
+ // movements).
+ if (index >= 0) {
+ if (entry->pointerCoords[0].isEmpty()) {
+ mMotionMementos.erase(mMotionMementos.begin() + index);
+ } else {
+ MotionMemento& memento = mMotionMementos[index];
+ memento.setPointers(entry);
+ }
+ } else if (!entry->pointerCoords[0].isEmpty()) {
+ addMotionMemento(entry, flags, false /*hovering*/);
+ }
+
+ // Joysticks and trackballs can send MOVE events without corresponding DOWN or UP.
+ return true;
+ }
+ if (index >= 0) {
+ MotionMemento& memento = mMotionMementos[index];
+ memento.setPointers(entry);
+ return true;
+ }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("Dropping inconsistent motion pointer up/down or move event: "
+ "deviceId=%d, source=%08x, displayId=%" PRId32 ", actionMasked=%d",
+ entry->deviceId, entry->source, entry->displayId, actionMasked);
+#endif
+ return false;
+ }
+
+ case AMOTION_EVENT_ACTION_HOVER_EXIT: {
+ ssize_t index = findMotionMemento(entry, true /*hovering*/);
+ if (index >= 0) {
+ mMotionMementos.erase(mMotionMementos.begin() + index);
+ return true;
+ }
+#if DEBUG_OUTBOUND_EVENT_DETAILS
+ ALOGD("Dropping inconsistent motion hover exit event: deviceId=%d, source=%08x, "
+ "displayId=%" PRId32,
+ entry->deviceId, entry->source, entry->displayId);
+#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.erase(mMotionMementos.begin() + 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[i];
+ if (memento.deviceId == entry->deviceId && memento.source == entry->source &&
+ memento.displayId == entry->displayId && 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[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) {
+ KeyMemento memento;
+ memento.deviceId = entry->deviceId;
+ memento.source = entry->source;
+ memento.displayId = entry->displayId;
+ memento.keyCode = entry->keyCode;
+ memento.scanCode = entry->scanCode;
+ memento.metaState = entry->metaState;
+ memento.flags = flags;
+ memento.downTime = entry->downTime;
+ memento.policyFlags = entry->policyFlags;
+ mKeyMementos.push_back(memento);
+}
+
+void InputDispatcher::InputState::addMotionMemento(const MotionEntry* entry, int32_t flags,
+ bool hovering) {
+ MotionMemento memento;
+ memento.deviceId = entry->deviceId;
+ memento.source = entry->source;
+ memento.displayId = entry->displayId;
+ memento.flags = flags;
+ memento.xPrecision = entry->xPrecision;
+ memento.yPrecision = entry->yPrecision;
+ memento.xCursorPosition = entry->xCursorPosition;
+ memento.yCursorPosition = entry->yCursorPosition;
+ memento.downTime = entry->downTime;
+ memento.setPointers(entry);
+ memento.hovering = hovering;
+ memento.policyFlags = entry->policyFlags;
+ mMotionMementos.push_back(memento);
+}
+
+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,
+ std::vector<EventEntry*>& outEvents,
+ const CancelationOptions& options) {
+ for (KeyMemento& memento : mKeyMementos) {
+ if (shouldCancelKey(memento, options)) {
+ outEvents.push_back(new KeyEntry(SYNTHESIZED_EVENT_SEQUENCE_NUM, currentTime,
+ memento.deviceId, memento.source, memento.displayId,
+ memento.policyFlags, AKEY_EVENT_ACTION_UP,
+ memento.flags | AKEY_EVENT_FLAG_CANCELED,
+ memento.keyCode, memento.scanCode, memento.metaState,
+ 0, memento.downTime));
+ }
+ }
+
+ for (const MotionMemento& memento : mMotionMementos) {
+ if (shouldCancelMotion(memento, options)) {
+ const int32_t action = memento.hovering ? AMOTION_EVENT_ACTION_HOVER_EXIT
+ : AMOTION_EVENT_ACTION_CANCEL;
+ outEvents.push_back(
+ new MotionEntry(SYNTHESIZED_EVENT_SEQUENCE_NUM, currentTime, memento.deviceId,
+ memento.source, memento.displayId, memento.policyFlags, action,
+ 0 /*actionButton*/, memento.flags, AMETA_NONE,
+ 0 /*buttonState*/, MotionClassification::NONE,
+ AMOTION_EVENT_EDGE_FLAG_NONE, memento.xPrecision,
+ memento.yPrecision, memento.xCursorPosition,
+ memento.yCursorPosition, memento.downTime, memento.pointerCount,
+ memento.pointerProperties, memento.pointerCoords, 0 /*xOffset*/,
+ 0 /*yOffset*/));
+ }
+ }
+}
+
+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[i];
+ if (memento.source & AINPUT_SOURCE_CLASS_POINTER) {
+ for (size_t j = 0; j < other.mMotionMementos.size();) {
+ const MotionMemento& otherMemento = other.mMotionMementos[j];
+ if (memento.deviceId == otherMemento.deviceId &&
+ memento.source == otherMemento.source &&
+ memento.displayId == otherMemento.displayId) {
+ other.mMotionMementos.erase(other.mMotionMementos.begin() + j);
+ } else {
+ j += 1;
+ }
+ }
+ other.mMotionMementos.push_back(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 && memento.keyCode != options.keyCode.value()) {
+ return false;
+ }
+
+ if (options.deviceId && memento.deviceId != options.deviceId.value()) {
+ return false;
+ }
+
+ if (options.displayId && memento.displayId != options.displayId.value()) {
+ 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 && memento.deviceId != options.deviceId.value()) {
+ return false;
+ }
+
+ if (options.displayId && memento.displayId != options.displayId.value()) {
+ 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, bool monitor)
+ : status(STATUS_NORMAL),
+ inputChannel(inputChannel),
+ monitor(monitor),
+ inputPublisher(inputChannel),
+ inputPublisherBlocked(false) {}
+
+InputDispatcher::Connection::~Connection() {}
+
+const std::string InputDispatcher::Connection::getWindowName() const {
+ if (inputChannel != nullptr) {
+ return inputChannel->getName();
+ }
+ 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";
+ }
+}
+
+std::deque<InputDispatcher::DispatchEntry*>::iterator
+InputDispatcher::Connection::findWaitQueueEntry(uint32_t seq) {
+ for (std::deque<DispatchEntry*>::iterator it = waitQueue.begin(); it != waitQueue.end(); it++) {
+ if ((*it)->seq == seq) {
+ return it;
+ }
+ }
+ return waitQueue.end();
+}
+
+// --- InputDispatcher::Monitor
+InputDispatcher::Monitor::Monitor(const sp<InputChannel>& inputChannel)
+ : inputChannel(inputChannel) {}
+
+// --- InputDispatcher::CommandEntry ---
+//
+InputDispatcher::CommandEntry::CommandEntry(Command command)
+ : command(command),
+ eventTime(0),
+ keyEntry(nullptr),
+ userActivityEventType(0),
+ seq(0),
+ handled(false) {}
+
+InputDispatcher::CommandEntry::~CommandEntry() {}
+
+// --- InputDispatcher::TouchedMonitor ---
+InputDispatcher::TouchedMonitor::TouchedMonitor(const Monitor& monitor, float xOffset,
+ float yOffset)
+ : monitor(monitor), xOffset(xOffset), yOffset(yOffset) {}
+
+// --- InputDispatcher::TouchState ---
+
+InputDispatcher::TouchState::TouchState()
+ : down(false), split(false), deviceId(-1), source(0), displayId(ADISPLAY_ID_NONE) {}
+
+InputDispatcher::TouchState::~TouchState() {}
+
+void InputDispatcher::TouchState::reset() {
+ down = false;
+ split = false;
+ deviceId = -1;
+ source = 0;
+ displayId = ADISPLAY_ID_NONE;
+ windows.clear();
+ portalWindows.clear();
+ gestureMonitors.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;
+ portalWindows = other.portalWindows;
+ gestureMonitors = other.gestureMonitors;
+}
+
+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[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;
+ }
+ }
+
+ TouchedWindow touchedWindow;
+ touchedWindow.windowHandle = windowHandle;
+ touchedWindow.targetFlags = targetFlags;
+ touchedWindow.pointerIds = pointerIds;
+ windows.push_back(touchedWindow);
+}
+
+void InputDispatcher::TouchState::addPortalWindow(const sp<InputWindowHandle>& windowHandle) {
+ size_t numWindows = portalWindows.size();
+ for (size_t i = 0; i < numWindows; i++) {
+ if (portalWindows[i] == windowHandle) {
+ return;
+ }
+ }
+ portalWindows.push_back(windowHandle);
+}
+
+void InputDispatcher::TouchState::addGestureMonitors(
+ const std::vector<TouchedMonitor>& newMonitors) {
+ const size_t newSize = gestureMonitors.size() + newMonitors.size();
+ gestureMonitors.reserve(newSize);
+ gestureMonitors.insert(std::end(gestureMonitors), std::begin(newMonitors),
+ std::end(newMonitors));
+}
+
+void InputDispatcher::TouchState::removeWindow(const sp<InputWindowHandle>& windowHandle) {
+ for (size_t i = 0; i < windows.size(); i++) {
+ if (windows[i].windowHandle == windowHandle) {
+ windows.erase(windows.begin() + i);
+ return;
+ }
+ }
+}
+
+void InputDispatcher::TouchState::removeWindowByToken(const sp<IBinder>& token) {
+ for (size_t i = 0; i < windows.size(); i++) {
+ if (windows[i].windowHandle->getToken() == token) {
+ windows.erase(windows.begin() + i);
+ return;
+ }
+ }
+}
+
+void InputDispatcher::TouchState::filterNonAsIsTouchWindows() {
+ for (size_t i = 0; i < windows.size();) {
+ TouchedWindow& window = windows[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.erase(windows.begin() + i);
+ }
+ }
+}
+
+void InputDispatcher::TouchState::filterNonMonitors() {
+ windows.clear();
+ portalWindows.clear();
+}
+
+sp<InputWindowHandle> InputDispatcher::TouchState::getFirstForegroundWindowHandle() const {
+ for (size_t i = 0; i < windows.size(); i++) {
+ const TouchedWindow& window = windows[i];
+ if (window.targetFlags & InputTarget::FLAG_FOREGROUND) {
+ return window.windowHandle;
+ }
+ }
+ return nullptr;
+}
+
+bool InputDispatcher::TouchState::isSlippery() const {
+ // Must have exactly one foreground window.
+ bool haveSlipperyForegroundWindow = false;
+ for (const TouchedWindow& window : windows) {
+ 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