|  | /* | 
|  | * 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. | 
|  | */ | 
|  |  | 
|  | #include "Macros.h" | 
|  |  | 
|  | #include "InputReader.h" | 
|  |  | 
|  | #include <android-base/stringprintf.h> | 
|  | #include <errno.h> | 
|  | #include <input/Keyboard.h> | 
|  | #include <input/VirtualKeyMap.h> | 
|  | #include <inttypes.h> | 
|  | #include <limits.h> | 
|  | #include <log/log.h> | 
|  | #include <math.h> | 
|  | #include <stddef.h> | 
|  | #include <stdlib.h> | 
|  | #include <unistd.h> | 
|  | #include <utils/Errors.h> | 
|  | #include <utils/Thread.h> | 
|  |  | 
|  | #include "InputDevice.h" | 
|  |  | 
|  | using android::base::StringPrintf; | 
|  |  | 
|  | namespace android { | 
|  |  | 
|  | // --- InputReader --- | 
|  |  | 
|  | InputReader::InputReader(std::shared_ptr<EventHubInterface> eventHub, | 
|  | const sp<InputReaderPolicyInterface>& policy, | 
|  | InputListenerInterface& listener) | 
|  | : mContext(this), | 
|  | mEventHub(eventHub), | 
|  | mPolicy(policy), | 
|  | mQueuedListener(listener), | 
|  | mGlobalMetaState(AMETA_NONE), | 
|  | mLedMetaState(AMETA_NONE), | 
|  | mGeneration(1), | 
|  | mNextInputDeviceId(END_RESERVED_ID), | 
|  | mDisableVirtualKeysTimeout(LLONG_MIN), | 
|  | mNextTimeout(LLONG_MAX), | 
|  | mConfigurationChangesToRefresh(0) { | 
|  | refreshConfigurationLocked(0); | 
|  | updateGlobalMetaStateLocked(); | 
|  | } | 
|  |  | 
|  | InputReader::~InputReader() {} | 
|  |  | 
|  | status_t InputReader::start() { | 
|  | if (mThread) { | 
|  | return ALREADY_EXISTS; | 
|  | } | 
|  | mThread = std::make_unique<InputThread>( | 
|  | "InputReader", [this]() { loopOnce(); }, [this]() { mEventHub->wake(); }); | 
|  | return OK; | 
|  | } | 
|  |  | 
|  | status_t InputReader::stop() { | 
|  | if (mThread && mThread->isCallingThread()) { | 
|  | ALOGE("InputReader cannot be stopped from its own thread!"); | 
|  | return INVALID_OPERATION; | 
|  | } | 
|  | mThread.reset(); | 
|  | return OK; | 
|  | } | 
|  |  | 
|  | void InputReader::loopOnce() { | 
|  | int32_t oldGeneration; | 
|  | int32_t timeoutMillis; | 
|  | bool inputDevicesChanged = false; | 
|  | std::vector<InputDeviceInfo> inputDevices; | 
|  | { // acquire lock | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | oldGeneration = mGeneration; | 
|  | timeoutMillis = -1; | 
|  |  | 
|  | uint32_t changes = mConfigurationChangesToRefresh; | 
|  | if (changes) { | 
|  | mConfigurationChangesToRefresh = 0; | 
|  | timeoutMillis = 0; | 
|  | refreshConfigurationLocked(changes); | 
|  | } else if (mNextTimeout != LLONG_MAX) { | 
|  | nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); | 
|  | timeoutMillis = toMillisecondTimeoutDelay(now, mNextTimeout); | 
|  | } | 
|  | } // release lock | 
|  |  | 
|  | size_t count = mEventHub->getEvents(timeoutMillis, mEventBuffer, EVENT_BUFFER_SIZE); | 
|  |  | 
|  | { // acquire lock | 
|  | std::scoped_lock _l(mLock); | 
|  | mReaderIsAliveCondition.notify_all(); | 
|  |  | 
|  | if (count) { | 
|  | processEventsLocked(mEventBuffer, count); | 
|  | } | 
|  |  | 
|  | if (mNextTimeout != LLONG_MAX) { | 
|  | nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); | 
|  | if (now >= mNextTimeout) { | 
|  | if (DEBUG_RAW_EVENTS) { | 
|  | ALOGD("Timeout expired, latency=%0.3fms", (now - mNextTimeout) * 0.000001f); | 
|  | } | 
|  | mNextTimeout = LLONG_MAX; | 
|  | timeoutExpiredLocked(now); | 
|  | } | 
|  | } | 
|  |  | 
|  | if (oldGeneration != mGeneration) { | 
|  | inputDevicesChanged = true; | 
|  | inputDevices = getInputDevicesLocked(); | 
|  | } | 
|  | } // release lock | 
|  |  | 
|  | // Send out a message that the describes the changed input devices. | 
|  | if (inputDevicesChanged) { | 
|  | mPolicy->notifyInputDevicesChanged(inputDevices); | 
|  | } | 
|  |  | 
|  | // Flush queued events out to the listener. | 
|  | // This must happen outside of the lock because the listener could potentially call | 
|  | // back into the InputReader's methods, such as getScanCodeState, or become blocked | 
|  | // on another thread similarly waiting to acquire the InputReader lock thereby | 
|  | // resulting in a deadlock.  This situation is actually quite plausible because the | 
|  | // listener is actually the input dispatcher, which calls into the window manager, | 
|  | // which occasionally calls into the input reader. | 
|  | mQueuedListener.flush(); | 
|  | } | 
|  |  | 
|  | void InputReader::processEventsLocked(const RawEvent* rawEvents, size_t count) { | 
|  | for (const RawEvent* rawEvent = rawEvents; count;) { | 
|  | int32_t type = rawEvent->type; | 
|  | size_t batchSize = 1; | 
|  | if (type < EventHubInterface::FIRST_SYNTHETIC_EVENT) { | 
|  | int32_t deviceId = rawEvent->deviceId; | 
|  | while (batchSize < count) { | 
|  | if (rawEvent[batchSize].type >= EventHubInterface::FIRST_SYNTHETIC_EVENT || | 
|  | rawEvent[batchSize].deviceId != deviceId) { | 
|  | break; | 
|  | } | 
|  | batchSize += 1; | 
|  | } | 
|  | if (DEBUG_RAW_EVENTS) { | 
|  | ALOGD("BatchSize: %zu Count: %zu", batchSize, count); | 
|  | } | 
|  | processEventsForDeviceLocked(deviceId, rawEvent, batchSize); | 
|  | } else { | 
|  | switch (rawEvent->type) { | 
|  | case EventHubInterface::DEVICE_ADDED: | 
|  | addDeviceLocked(rawEvent->when, rawEvent->deviceId); | 
|  | break; | 
|  | case EventHubInterface::DEVICE_REMOVED: | 
|  | removeDeviceLocked(rawEvent->when, rawEvent->deviceId); | 
|  | break; | 
|  | case EventHubInterface::FINISHED_DEVICE_SCAN: | 
|  | handleConfigurationChangedLocked(rawEvent->when); | 
|  | break; | 
|  | default: | 
|  | ALOG_ASSERT(false); // can't happen | 
|  | break; | 
|  | } | 
|  | } | 
|  | count -= batchSize; | 
|  | rawEvent += batchSize; | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::addDeviceLocked(nsecs_t when, int32_t eventHubId) { | 
|  | if (mDevices.find(eventHubId) != mDevices.end()) { | 
|  | ALOGW("Ignoring spurious device added event for eventHubId %d.", eventHubId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | InputDeviceIdentifier identifier = mEventHub->getDeviceIdentifier(eventHubId); | 
|  | std::shared_ptr<InputDevice> device = createDeviceLocked(eventHubId, identifier); | 
|  | device->configure(when, &mConfig, 0); | 
|  | device->reset(when); | 
|  |  | 
|  | if (device->isIgnored()) { | 
|  | ALOGI("Device added: id=%d, eventHubId=%d, name='%s', descriptor='%s' " | 
|  | "(ignored non-input device)", | 
|  | device->getId(), eventHubId, identifier.name.c_str(), identifier.descriptor.c_str()); | 
|  | } else { | 
|  | ALOGI("Device added: id=%d, eventHubId=%d, name='%s', descriptor='%s',sources=0x%08x", | 
|  | device->getId(), eventHubId, identifier.name.c_str(), identifier.descriptor.c_str(), | 
|  | device->getSources()); | 
|  | } | 
|  |  | 
|  | mDevices.emplace(eventHubId, device); | 
|  | // Add device to device to EventHub ids map. | 
|  | const auto mapIt = mDeviceToEventHubIdsMap.find(device); | 
|  | if (mapIt == mDeviceToEventHubIdsMap.end()) { | 
|  | std::vector<int32_t> ids = {eventHubId}; | 
|  | mDeviceToEventHubIdsMap.emplace(device, ids); | 
|  | } else { | 
|  | mapIt->second.push_back(eventHubId); | 
|  | } | 
|  | bumpGenerationLocked(); | 
|  |  | 
|  | if (device->getClasses().test(InputDeviceClass::EXTERNAL_STYLUS)) { | 
|  | notifyExternalStylusPresenceChangedLocked(); | 
|  | } | 
|  |  | 
|  | // Sensor input device is noisy, to save power disable it by default. | 
|  | // Input device is classified as SENSOR when any sub device is a SENSOR device, check Eventhub | 
|  | // device class to disable SENSOR sub device only. | 
|  | if (mEventHub->getDeviceClasses(eventHubId).test(InputDeviceClass::SENSOR)) { | 
|  | mEventHub->disableDevice(eventHubId); | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::removeDeviceLocked(nsecs_t when, int32_t eventHubId) { | 
|  | auto deviceIt = mDevices.find(eventHubId); | 
|  | if (deviceIt == mDevices.end()) { | 
|  | ALOGW("Ignoring spurious device removed event for eventHubId %d.", eventHubId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | std::shared_ptr<InputDevice> device = std::move(deviceIt->second); | 
|  | mDevices.erase(deviceIt); | 
|  | // Erase device from device to EventHub ids map. | 
|  | auto mapIt = mDeviceToEventHubIdsMap.find(device); | 
|  | if (mapIt != mDeviceToEventHubIdsMap.end()) { | 
|  | std::vector<int32_t>& eventHubIds = mapIt->second; | 
|  | std::erase_if(eventHubIds, [eventHubId](int32_t eId) { return eId == eventHubId; }); | 
|  | if (eventHubIds.size() == 0) { | 
|  | mDeviceToEventHubIdsMap.erase(mapIt); | 
|  | } | 
|  | } | 
|  | bumpGenerationLocked(); | 
|  |  | 
|  | if (device->isIgnored()) { | 
|  | ALOGI("Device removed: id=%d, eventHubId=%d, name='%s', descriptor='%s' " | 
|  | "(ignored non-input device)", | 
|  | device->getId(), eventHubId, device->getName().c_str(), | 
|  | device->getDescriptor().c_str()); | 
|  | } else { | 
|  | ALOGI("Device removed: id=%d, eventHubId=%d, name='%s', descriptor='%s', sources=0x%08x", | 
|  | device->getId(), eventHubId, device->getName().c_str(), | 
|  | device->getDescriptor().c_str(), device->getSources()); | 
|  | } | 
|  |  | 
|  | device->removeEventHubDevice(eventHubId); | 
|  |  | 
|  | if (device->getClasses().test(InputDeviceClass::EXTERNAL_STYLUS)) { | 
|  | notifyExternalStylusPresenceChangedLocked(); | 
|  | } | 
|  |  | 
|  | if (device->hasEventHubDevices()) { | 
|  | device->configure(when, &mConfig, 0); | 
|  | } | 
|  | device->reset(when); | 
|  | } | 
|  |  | 
|  | std::shared_ptr<InputDevice> InputReader::createDeviceLocked( | 
|  | int32_t eventHubId, const InputDeviceIdentifier& identifier) { | 
|  | auto deviceIt = std::find_if(mDevices.begin(), mDevices.end(), [identifier](auto& devicePair) { | 
|  | return devicePair.second->getDescriptor().size() && identifier.descriptor.size() && | 
|  | devicePair.second->getDescriptor() == identifier.descriptor; | 
|  | }); | 
|  |  | 
|  | std::shared_ptr<InputDevice> device; | 
|  | if (deviceIt != mDevices.end()) { | 
|  | device = deviceIt->second; | 
|  | } else { | 
|  | int32_t deviceId = (eventHubId < END_RESERVED_ID) ? eventHubId : nextInputDeviceIdLocked(); | 
|  | device = std::make_shared<InputDevice>(&mContext, deviceId, bumpGenerationLocked(), | 
|  | identifier); | 
|  | } | 
|  | device->addEventHubDevice(eventHubId); | 
|  | return device; | 
|  | } | 
|  |  | 
|  | void InputReader::processEventsForDeviceLocked(int32_t eventHubId, const RawEvent* rawEvents, | 
|  | size_t count) { | 
|  | auto deviceIt = mDevices.find(eventHubId); | 
|  | if (deviceIt == mDevices.end()) { | 
|  | ALOGW("Discarding event for unknown eventHubId %d.", eventHubId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | std::shared_ptr<InputDevice>& device = deviceIt->second; | 
|  | if (device->isIgnored()) { | 
|  | // ALOGD("Discarding event for ignored deviceId %d.", deviceId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | device->process(rawEvents, count); | 
|  | } | 
|  |  | 
|  | InputDevice* InputReader::findInputDeviceLocked(int32_t deviceId) const { | 
|  | auto deviceIt = | 
|  | std::find_if(mDevices.begin(), mDevices.end(), [deviceId](const auto& devicePair) { | 
|  | return devicePair.second->getId() == deviceId; | 
|  | }); | 
|  | if (deviceIt != mDevices.end()) { | 
|  | return deviceIt->second.get(); | 
|  | } | 
|  | return nullptr; | 
|  | } | 
|  |  | 
|  | void InputReader::timeoutExpiredLocked(nsecs_t when) { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | if (!device->isIgnored()) { | 
|  | device->timeoutExpired(when); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | int32_t InputReader::nextInputDeviceIdLocked() { | 
|  | return ++mNextInputDeviceId; | 
|  | } | 
|  |  | 
|  | void InputReader::handleConfigurationChangedLocked(nsecs_t when) { | 
|  | // Reset global meta state because it depends on the list of all configured devices. | 
|  | updateGlobalMetaStateLocked(); | 
|  |  | 
|  | // Enqueue configuration changed. | 
|  | NotifyConfigurationChangedArgs args(mContext.getNextId(), when); | 
|  | mQueuedListener.notifyConfigurationChanged(&args); | 
|  | } | 
|  |  | 
|  | void InputReader::refreshConfigurationLocked(uint32_t changes) { | 
|  | mPolicy->getReaderConfiguration(&mConfig); | 
|  | mEventHub->setExcludedDevices(mConfig.excludedDeviceNames); | 
|  |  | 
|  | if (!changes) return; | 
|  |  | 
|  | ALOGI("Reconfiguring input devices, changes=%s", | 
|  | InputReaderConfiguration::changesToString(changes).c_str()); | 
|  | nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); | 
|  |  | 
|  | if (changes & InputReaderConfiguration::CHANGE_DISPLAY_INFO) { | 
|  | updatePointerDisplayLocked(); | 
|  | } | 
|  |  | 
|  | if (changes & InputReaderConfiguration::CHANGE_MUST_REOPEN) { | 
|  | mEventHub->requestReopenDevices(); | 
|  | } else { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | device->configure(now, &mConfig, changes); | 
|  | } | 
|  | } | 
|  |  | 
|  | if (changes & InputReaderConfiguration::CHANGE_POINTER_CAPTURE) { | 
|  | if (mCurrentPointerCaptureRequest == mConfig.pointerCaptureRequest) { | 
|  | ALOGV("Skipping notifying pointer capture changes: " | 
|  | "There was no change in the pointer capture state."); | 
|  | } else { | 
|  | mCurrentPointerCaptureRequest = mConfig.pointerCaptureRequest; | 
|  | const NotifyPointerCaptureChangedArgs args(mContext.getNextId(), now, | 
|  | mCurrentPointerCaptureRequest); | 
|  | mQueuedListener.notifyPointerCaptureChanged(&args); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::updateGlobalMetaStateLocked() { | 
|  | mGlobalMetaState = 0; | 
|  |  | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | mGlobalMetaState |= device->getMetaState(); | 
|  | } | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getGlobalMetaStateLocked() { | 
|  | return mGlobalMetaState; | 
|  | } | 
|  |  | 
|  | void InputReader::updateLedMetaStateLocked(int32_t metaState) { | 
|  | mLedMetaState = metaState; | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | device->updateLedState(false); | 
|  | } | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getLedMetaStateLocked() { | 
|  | return mLedMetaState; | 
|  | } | 
|  |  | 
|  | void InputReader::notifyExternalStylusPresenceChangedLocked() { | 
|  | refreshConfigurationLocked(InputReaderConfiguration::CHANGE_EXTERNAL_STYLUS_PRESENCE); | 
|  | } | 
|  |  | 
|  | void InputReader::getExternalStylusDevicesLocked(std::vector<InputDeviceInfo>& outDevices) { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | if (device->getClasses().test(InputDeviceClass::EXTERNAL_STYLUS) && !device->isIgnored()) { | 
|  | outDevices.push_back(device->getDeviceInfo()); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::dispatchExternalStylusStateLocked(const StylusState& state) { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | device->updateExternalStylusState(state); | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::disableVirtualKeysUntilLocked(nsecs_t time) { | 
|  | mDisableVirtualKeysTimeout = time; | 
|  | } | 
|  |  | 
|  | bool InputReader::shouldDropVirtualKeyLocked(nsecs_t now, int32_t keyCode, int32_t scanCode) { | 
|  | if (now < mDisableVirtualKeysTimeout) { | 
|  | ALOGI("Dropping virtual key from device because virtual keys are " | 
|  | "temporarily disabled for the next %0.3fms.  keyCode=%d, scanCode=%d", | 
|  | (mDisableVirtualKeysTimeout - now) * 0.000001, keyCode, scanCode); | 
|  | return true; | 
|  | } else { | 
|  | return false; | 
|  | } | 
|  | } | 
|  |  | 
|  | std::shared_ptr<PointerControllerInterface> InputReader::getPointerControllerLocked( | 
|  | int32_t deviceId) { | 
|  | std::shared_ptr<PointerControllerInterface> controller = mPointerController.lock(); | 
|  | if (controller == nullptr) { | 
|  | controller = mPolicy->obtainPointerController(deviceId); | 
|  | mPointerController = controller; | 
|  | updatePointerDisplayLocked(); | 
|  | } | 
|  | return controller; | 
|  | } | 
|  |  | 
|  | void InputReader::updatePointerDisplayLocked() { | 
|  | std::shared_ptr<PointerControllerInterface> controller = mPointerController.lock(); | 
|  | if (controller == nullptr) { | 
|  | return; | 
|  | } | 
|  |  | 
|  | std::optional<DisplayViewport> viewport = | 
|  | mConfig.getDisplayViewportById(mConfig.defaultPointerDisplayId); | 
|  | if (!viewport) { | 
|  | ALOGW("Can't find the designated viewport with ID %" PRId32 " to update cursor input " | 
|  | "mapper. Fall back to default display", | 
|  | mConfig.defaultPointerDisplayId); | 
|  | viewport = mConfig.getDisplayViewportById(ADISPLAY_ID_DEFAULT); | 
|  | } | 
|  | if (!viewport) { | 
|  | ALOGE("Still can't find a viable viewport to update cursor input mapper. Skip setting it to" | 
|  | " PointerController."); | 
|  | return; | 
|  | } | 
|  |  | 
|  | controller->setDisplayViewport(*viewport); | 
|  | } | 
|  |  | 
|  | void InputReader::fadePointerLocked() { | 
|  | std::shared_ptr<PointerControllerInterface> controller = mPointerController.lock(); | 
|  | if (controller != nullptr) { | 
|  | controller->fade(PointerControllerInterface::Transition::GRADUAL); | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::requestTimeoutAtTimeLocked(nsecs_t when) { | 
|  | if (when < mNextTimeout) { | 
|  | mNextTimeout = when; | 
|  | mEventHub->wake(); | 
|  | } | 
|  | } | 
|  |  | 
|  | int32_t InputReader::bumpGenerationLocked() { | 
|  | return ++mGeneration; | 
|  | } | 
|  |  | 
|  | std::vector<InputDeviceInfo> InputReader::getInputDevices() const { | 
|  | std::scoped_lock _l(mLock); | 
|  | return getInputDevicesLocked(); | 
|  | } | 
|  |  | 
|  | std::vector<InputDeviceInfo> InputReader::getInputDevicesLocked() const { | 
|  | std::vector<InputDeviceInfo> outInputDevices; | 
|  | outInputDevices.reserve(mDeviceToEventHubIdsMap.size()); | 
|  |  | 
|  | for (const auto& [device, eventHubIds] : mDeviceToEventHubIdsMap) { | 
|  | if (!device->isIgnored()) { | 
|  | outInputDevices.push_back(device->getDeviceInfo()); | 
|  | } | 
|  | } | 
|  | return outInputDevices; | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getKeyCodeState(int32_t deviceId, uint32_t sourceMask, int32_t keyCode) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | return getStateLocked(deviceId, sourceMask, keyCode, &InputDevice::getKeyCodeState); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getScanCodeState(int32_t deviceId, uint32_t sourceMask, int32_t scanCode) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | return getStateLocked(deviceId, sourceMask, scanCode, &InputDevice::getScanCodeState); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getSwitchState(int32_t deviceId, uint32_t sourceMask, int32_t switchCode) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | return getStateLocked(deviceId, sourceMask, switchCode, &InputDevice::getSwitchState); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getStateLocked(int32_t deviceId, uint32_t sourceMask, int32_t code, | 
|  | GetStateFunc getStateFunc) { | 
|  | int32_t result = AKEY_STATE_UNKNOWN; | 
|  | if (deviceId >= 0) { | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device && !device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { | 
|  | result = (device->*getStateFunc)(sourceMask, code); | 
|  | } | 
|  | } else { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | if (!device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { | 
|  | // If any device reports AKEY_STATE_DOWN or AKEY_STATE_VIRTUAL, return that | 
|  | // value.  Otherwise, return AKEY_STATE_UP as long as one device reports it. | 
|  | int32_t currentResult = (device.get()->*getStateFunc)(sourceMask, code); | 
|  | if (currentResult >= AKEY_STATE_DOWN) { | 
|  | return currentResult; | 
|  | } else if (currentResult == AKEY_STATE_UP) { | 
|  | result = currentResult; | 
|  | } | 
|  | } | 
|  | } | 
|  | } | 
|  | return result; | 
|  | } | 
|  |  | 
|  | void InputReader::toggleCapsLockState(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (!device) { | 
|  | ALOGW("Ignoring toggleCapsLock for unknown deviceId %" PRId32 ".", deviceId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | if (device->isIgnored()) { | 
|  | ALOGW("Ignoring toggleCapsLock for ignored deviceId %" PRId32 ".", deviceId); | 
|  | return; | 
|  | } | 
|  |  | 
|  | device->updateMetaState(AKEYCODE_CAPS_LOCK); | 
|  | } | 
|  |  | 
|  | bool InputReader::hasKeys(int32_t deviceId, uint32_t sourceMask, size_t numCodes, | 
|  | const int32_t* keyCodes, uint8_t* outFlags) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | memset(outFlags, 0, numCodes); | 
|  | return markSupportedKeyCodesLocked(deviceId, sourceMask, numCodes, keyCodes, outFlags); | 
|  | } | 
|  |  | 
|  | bool InputReader::markSupportedKeyCodesLocked(int32_t deviceId, uint32_t sourceMask, | 
|  | size_t numCodes, const int32_t* keyCodes, | 
|  | uint8_t* outFlags) { | 
|  | bool result = false; | 
|  | if (deviceId >= 0) { | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device && !device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { | 
|  | result = device->markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags); | 
|  | } | 
|  | } else { | 
|  | for (auto& devicePair : mDevices) { | 
|  | std::shared_ptr<InputDevice>& device = devicePair.second; | 
|  | if (!device->isIgnored() && sourcesMatchMask(device->getSources(), sourceMask)) { | 
|  | result |= device->markSupportedKeyCodes(sourceMask, numCodes, keyCodes, outFlags); | 
|  | } | 
|  | } | 
|  | } | 
|  | return result; | 
|  | } | 
|  |  | 
|  | int32_t InputReader::getKeyCodeForKeyLocation(int32_t deviceId, int32_t locationKeyCode) const { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device == nullptr) { | 
|  | ALOGW("Failed to get key code for key location: Input device with id %d not found", | 
|  | deviceId); | 
|  | return AKEYCODE_UNKNOWN; | 
|  | } | 
|  | return device->getKeyCodeForKeyLocation(locationKeyCode); | 
|  | } | 
|  |  | 
|  | void InputReader::requestRefreshConfiguration(uint32_t changes) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | if (changes) { | 
|  | bool needWake = !mConfigurationChangesToRefresh; | 
|  | mConfigurationChangesToRefresh |= changes; | 
|  |  | 
|  | if (needWake) { | 
|  | mEventHub->wake(); | 
|  | } | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::vibrate(int32_t deviceId, const VibrationSequence& sequence, ssize_t repeat, | 
|  | int32_t token) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | device->vibrate(sequence, repeat, token); | 
|  | } | 
|  | } | 
|  |  | 
|  | void InputReader::cancelVibrate(int32_t deviceId, int32_t token) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | device->cancelVibrate(token); | 
|  | } | 
|  | } | 
|  |  | 
|  | bool InputReader::isVibrating(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->isVibrating(); | 
|  | } | 
|  | return false; | 
|  | } | 
|  |  | 
|  | std::vector<int32_t> InputReader::getVibratorIds(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->getVibratorIds(); | 
|  | } | 
|  | return {}; | 
|  | } | 
|  |  | 
|  | void InputReader::disableSensor(int32_t deviceId, InputDeviceSensorType sensorType) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | device->disableSensor(sensorType); | 
|  | } | 
|  | } | 
|  |  | 
|  | bool InputReader::enableSensor(int32_t deviceId, InputDeviceSensorType sensorType, | 
|  | std::chrono::microseconds samplingPeriod, | 
|  | std::chrono::microseconds maxBatchReportLatency) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->enableSensor(sensorType, samplingPeriod, maxBatchReportLatency); | 
|  | } | 
|  | return false; | 
|  | } | 
|  |  | 
|  | void InputReader::flushSensor(int32_t deviceId, InputDeviceSensorType sensorType) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | device->flushSensor(sensorType); | 
|  | } | 
|  | } | 
|  |  | 
|  | std::optional<int32_t> InputReader::getBatteryCapacity(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->getBatteryCapacity(); | 
|  | } | 
|  | return std::nullopt; | 
|  | } | 
|  |  | 
|  | std::optional<int32_t> InputReader::getBatteryStatus(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->getBatteryStatus(); | 
|  | } | 
|  | return std::nullopt; | 
|  | } | 
|  |  | 
|  | std::vector<InputDeviceLightInfo> InputReader::getLights(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device == nullptr) { | 
|  | return {}; | 
|  | } | 
|  |  | 
|  | return device->getDeviceInfo().getLights(); | 
|  | } | 
|  |  | 
|  | std::vector<InputDeviceSensorInfo> InputReader::getSensors(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device == nullptr) { | 
|  | return {}; | 
|  | } | 
|  |  | 
|  | return device->getDeviceInfo().getSensors(); | 
|  | } | 
|  |  | 
|  | bool InputReader::setLightColor(int32_t deviceId, int32_t lightId, int32_t color) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->setLightColor(lightId, color); | 
|  | } | 
|  | return false; | 
|  | } | 
|  |  | 
|  | bool InputReader::setLightPlayerId(int32_t deviceId, int32_t lightId, int32_t playerId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->setLightPlayerId(lightId, playerId); | 
|  | } | 
|  | return false; | 
|  | } | 
|  |  | 
|  | std::optional<int32_t> InputReader::getLightColor(int32_t deviceId, int32_t lightId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->getLightColor(lightId); | 
|  | } | 
|  | return std::nullopt; | 
|  | } | 
|  |  | 
|  | std::optional<int32_t> InputReader::getLightPlayerId(int32_t deviceId, int32_t lightId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->getLightPlayerId(lightId); | 
|  | } | 
|  | return std::nullopt; | 
|  | } | 
|  |  | 
|  | bool InputReader::isInputDeviceEnabled(int32_t deviceId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (device) { | 
|  | return device->isEnabled(); | 
|  | } | 
|  | ALOGW("Ignoring invalid device id %" PRId32 ".", deviceId); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | bool InputReader::canDispatchToDisplay(int32_t deviceId, int32_t displayId) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | InputDevice* device = findInputDeviceLocked(deviceId); | 
|  | if (!device) { | 
|  | ALOGW("Ignoring invalid device id %" PRId32 ".", deviceId); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | if (!device->isEnabled()) { | 
|  | ALOGW("Ignoring disabled device %s", device->getName().c_str()); | 
|  | return false; | 
|  | } | 
|  |  | 
|  | std::optional<int32_t> associatedDisplayId = device->getAssociatedDisplayId(); | 
|  | // No associated display. By default, can dispatch to all displays. | 
|  | if (!associatedDisplayId || | 
|  | *associatedDisplayId == ADISPLAY_ID_NONE) { | 
|  | return true; | 
|  | } | 
|  |  | 
|  | return *associatedDisplayId == displayId; | 
|  | } | 
|  |  | 
|  | void InputReader::dump(std::string& dump) { | 
|  | std::scoped_lock _l(mLock); | 
|  |  | 
|  | mEventHub->dump(dump); | 
|  | dump += "\n"; | 
|  |  | 
|  | dump += StringPrintf("Input Reader State (Nums of device: %zu):\n", | 
|  | mDeviceToEventHubIdsMap.size()); | 
|  |  | 
|  | for (const auto& devicePair : mDeviceToEventHubIdsMap) { | 
|  | const std::shared_ptr<InputDevice>& device = devicePair.first; | 
|  | std::string eventHubDevStr = INDENT "EventHub Devices: [ "; | 
|  | for (const auto& eId : devicePair.second) { | 
|  | eventHubDevStr += StringPrintf("%d ", eId); | 
|  | } | 
|  | eventHubDevStr += "] \n"; | 
|  | device->dump(dump, eventHubDevStr); | 
|  | } | 
|  |  | 
|  | dump += INDENT "Configuration:\n"; | 
|  | dump += INDENT2 "ExcludedDeviceNames: ["; | 
|  | for (size_t i = 0; i < mConfig.excludedDeviceNames.size(); i++) { | 
|  | if (i != 0) { | 
|  | dump += ", "; | 
|  | } | 
|  | dump += mConfig.excludedDeviceNames[i]; | 
|  | } | 
|  | dump += "]\n"; | 
|  | dump += StringPrintf(INDENT2 "VirtualKeyQuietTime: %0.1fms\n", | 
|  | mConfig.virtualKeyQuietTime * 0.000001f); | 
|  |  | 
|  | dump += StringPrintf(INDENT2 "PointerVelocityControlParameters: " | 
|  | "scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, " | 
|  | "acceleration=%0.3f\n", | 
|  | mConfig.pointerVelocityControlParameters.scale, | 
|  | mConfig.pointerVelocityControlParameters.lowThreshold, | 
|  | mConfig.pointerVelocityControlParameters.highThreshold, | 
|  | mConfig.pointerVelocityControlParameters.acceleration); | 
|  |  | 
|  | dump += StringPrintf(INDENT2 "WheelVelocityControlParameters: " | 
|  | "scale=%0.3f, lowThreshold=%0.3f, highThreshold=%0.3f, " | 
|  | "acceleration=%0.3f\n", | 
|  | mConfig.wheelVelocityControlParameters.scale, | 
|  | mConfig.wheelVelocityControlParameters.lowThreshold, | 
|  | mConfig.wheelVelocityControlParameters.highThreshold, | 
|  | mConfig.wheelVelocityControlParameters.acceleration); | 
|  |  | 
|  | dump += StringPrintf(INDENT2 "PointerGesture:\n"); | 
|  | dump += StringPrintf(INDENT3 "Enabled: %s\n", toString(mConfig.pointerGesturesEnabled)); | 
|  | dump += StringPrintf(INDENT3 "QuietInterval: %0.1fms\n", | 
|  | mConfig.pointerGestureQuietInterval * 0.000001f); | 
|  | dump += StringPrintf(INDENT3 "DragMinSwitchSpeed: %0.1fpx/s\n", | 
|  | mConfig.pointerGestureDragMinSwitchSpeed); | 
|  | dump += StringPrintf(INDENT3 "TapInterval: %0.1fms\n", | 
|  | mConfig.pointerGestureTapInterval * 0.000001f); | 
|  | dump += StringPrintf(INDENT3 "TapDragInterval: %0.1fms\n", | 
|  | mConfig.pointerGestureTapDragInterval * 0.000001f); | 
|  | dump += StringPrintf(INDENT3 "TapSlop: %0.1fpx\n", mConfig.pointerGestureTapSlop); | 
|  | dump += StringPrintf(INDENT3 "MultitouchSettleInterval: %0.1fms\n", | 
|  | mConfig.pointerGestureMultitouchSettleInterval * 0.000001f); | 
|  | dump += StringPrintf(INDENT3 "MultitouchMinDistance: %0.1fpx\n", | 
|  | mConfig.pointerGestureMultitouchMinDistance); | 
|  | dump += StringPrintf(INDENT3 "SwipeTransitionAngleCosine: %0.1f\n", | 
|  | mConfig.pointerGestureSwipeTransitionAngleCosine); | 
|  | dump += StringPrintf(INDENT3 "SwipeMaxWidthRatio: %0.1f\n", | 
|  | mConfig.pointerGestureSwipeMaxWidthRatio); | 
|  | dump += StringPrintf(INDENT3 "MovementSpeedRatio: %0.1f\n", | 
|  | mConfig.pointerGestureMovementSpeedRatio); | 
|  | dump += StringPrintf(INDENT3 "ZoomSpeedRatio: %0.1f\n", mConfig.pointerGestureZoomSpeedRatio); | 
|  |  | 
|  | dump += INDENT3 "Viewports:\n"; | 
|  | mConfig.dump(dump); | 
|  | } | 
|  |  | 
|  | void InputReader::monitor() { | 
|  | // Acquire and release the lock to ensure that the reader has not deadlocked. | 
|  | std::unique_lock<std::mutex> lock(mLock); | 
|  | mEventHub->wake(); | 
|  | mReaderIsAliveCondition.wait(lock); | 
|  | // Check the EventHub | 
|  | mEventHub->monitor(); | 
|  | } | 
|  |  | 
|  | // --- InputReader::ContextImpl --- | 
|  |  | 
|  | InputReader::ContextImpl::ContextImpl(InputReader* reader) | 
|  | : mReader(reader), mIdGenerator(IdGenerator::Source::INPUT_READER) {} | 
|  |  | 
|  | void InputReader::ContextImpl::updateGlobalMetaState() { | 
|  | // lock is already held by the input loop | 
|  | mReader->updateGlobalMetaStateLocked(); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::ContextImpl::getGlobalMetaState() { | 
|  | // lock is already held by the input loop | 
|  | return mReader->getGlobalMetaStateLocked(); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::updateLedMetaState(int32_t metaState) { | 
|  | // lock is already held by the input loop | 
|  | mReader->updateLedMetaStateLocked(metaState); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::ContextImpl::getLedMetaState() { | 
|  | // lock is already held by the input loop | 
|  | return mReader->getLedMetaStateLocked(); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::disableVirtualKeysUntil(nsecs_t time) { | 
|  | // lock is already held by the input loop | 
|  | mReader->disableVirtualKeysUntilLocked(time); | 
|  | } | 
|  |  | 
|  | bool InputReader::ContextImpl::shouldDropVirtualKey(nsecs_t now, int32_t keyCode, | 
|  | int32_t scanCode) { | 
|  | // lock is already held by the input loop | 
|  | return mReader->shouldDropVirtualKeyLocked(now, keyCode, scanCode); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::fadePointer() { | 
|  | // lock is already held by the input loop | 
|  | mReader->fadePointerLocked(); | 
|  | } | 
|  |  | 
|  | std::shared_ptr<PointerControllerInterface> InputReader::ContextImpl::getPointerController( | 
|  | int32_t deviceId) { | 
|  | // lock is already held by the input loop | 
|  | return mReader->getPointerControllerLocked(deviceId); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::requestTimeoutAtTime(nsecs_t when) { | 
|  | // lock is already held by the input loop | 
|  | mReader->requestTimeoutAtTimeLocked(when); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::ContextImpl::bumpGeneration() { | 
|  | // lock is already held by the input loop | 
|  | return mReader->bumpGenerationLocked(); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::getExternalStylusDevices(std::vector<InputDeviceInfo>& outDevices) { | 
|  | // lock is already held by whatever called refreshConfigurationLocked | 
|  | mReader->getExternalStylusDevicesLocked(outDevices); | 
|  | } | 
|  |  | 
|  | void InputReader::ContextImpl::dispatchExternalStylusState(const StylusState& state) { | 
|  | mReader->dispatchExternalStylusStateLocked(state); | 
|  | } | 
|  |  | 
|  | InputReaderPolicyInterface* InputReader::ContextImpl::getPolicy() { | 
|  | return mReader->mPolicy.get(); | 
|  | } | 
|  |  | 
|  | InputListenerInterface& InputReader::ContextImpl::getListener() { | 
|  | return mReader->mQueuedListener; | 
|  | } | 
|  |  | 
|  | EventHubInterface* InputReader::ContextImpl::getEventHub() { | 
|  | return mReader->mEventHub.get(); | 
|  | } | 
|  |  | 
|  | int32_t InputReader::ContextImpl::getNextId() { | 
|  | return mIdGenerator.nextId(); | 
|  | } | 
|  |  | 
|  | } // namespace android |