| /* | 
 |  * Copyright (C) 2019 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 "InputDevice.h" | 
 |  | 
 | #include <algorithm> | 
 |  | 
 | #include <android/sysprop/InputProperties.sysprop.h> | 
 | #include <ftl/flags.h> | 
 |  | 
 | #include "CursorInputMapper.h" | 
 | #include "ExternalStylusInputMapper.h" | 
 | #include "InputReaderContext.h" | 
 | #include "JoystickInputMapper.h" | 
 | #include "KeyboardInputMapper.h" | 
 | #include "MultiTouchInputMapper.h" | 
 | #include "PeripheralController.h" | 
 | #include "RotaryEncoderInputMapper.h" | 
 | #include "SensorInputMapper.h" | 
 | #include "SingleTouchInputMapper.h" | 
 | #include "SwitchInputMapper.h" | 
 | #include "TouchpadInputMapper.h" | 
 | #include "VibratorInputMapper.h" | 
 |  | 
 | namespace android { | 
 |  | 
 | InputDevice::InputDevice(InputReaderContext* context, int32_t id, int32_t generation, | 
 |                          const InputDeviceIdentifier& identifier) | 
 |       : mContext(context), | 
 |         mId(id), | 
 |         mGeneration(generation), | 
 |         mControllerNumber(0), | 
 |         mIdentifier(identifier), | 
 |         mClasses(0), | 
 |         mSources(0), | 
 |         mIsExternal(false), | 
 |         mHasMic(false), | 
 |         mDropUntilNextSync(false) {} | 
 |  | 
 | InputDevice::~InputDevice() {} | 
 |  | 
 | bool InputDevice::isEnabled() { | 
 |     if (!hasEventHubDevices()) { | 
 |         return false; | 
 |     } | 
 |     // An input device composed of sub devices can be individually enabled or disabled. | 
 |     // If any of the sub device is enabled then the input device is considered as enabled. | 
 |     bool enabled = false; | 
 |     for_each_subdevice([&enabled](auto& context) { enabled |= context.isDeviceEnabled(); }); | 
 |     return enabled; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::setEnabled(bool enabled, nsecs_t when) { | 
 |     std::list<NotifyArgs> out; | 
 |     if (enabled && mAssociatedDisplayPort && !mAssociatedViewport) { | 
 |         ALOGW("Cannot enable input device %s because it is associated with port %" PRIu8 ", " | 
 |               "but the corresponding viewport is not found", | 
 |               getName().c_str(), *mAssociatedDisplayPort); | 
 |         enabled = false; | 
 |     } | 
 |  | 
 |     if (isEnabled() == enabled) { | 
 |         return out; | 
 |     } | 
 |  | 
 |     // When resetting some devices, the driver needs to be queried to ensure that a proper reset is | 
 |     // performed. The querying must happen when the device is enabled, so we reset after enabling | 
 |     // but before disabling the device. See MultiTouchMotionAccumulator::reset for more information. | 
 |     if (enabled) { | 
 |         for_each_subdevice([](auto& context) { context.enableDevice(); }); | 
 |         out += reset(when); | 
 |     } else { | 
 |         out += reset(when); | 
 |         for_each_subdevice([](auto& context) { context.disableDevice(); }); | 
 |     } | 
 |     // Must change generation to flag this device as changed | 
 |     bumpGeneration(); | 
 |     return out; | 
 | } | 
 |  | 
 | void InputDevice::dump(std::string& dump, const std::string& eventHubDevStr) { | 
 |     InputDeviceInfo deviceInfo = getDeviceInfo(); | 
 |  | 
 |     dump += StringPrintf(INDENT "Device %d: %s\n", deviceInfo.getId(), | 
 |                          deviceInfo.getDisplayName().c_str()); | 
 |     dump += StringPrintf(INDENT "%s", eventHubDevStr.c_str()); | 
 |     dump += StringPrintf(INDENT2 "Generation: %d\n", mGeneration); | 
 |     dump += StringPrintf(INDENT2 "IsExternal: %s\n", toString(mIsExternal)); | 
 |     dump += StringPrintf(INDENT2 "AssociatedDisplayPort: "); | 
 |     if (mAssociatedDisplayPort) { | 
 |         dump += StringPrintf("%" PRIu8 "\n", *mAssociatedDisplayPort); | 
 |     } else { | 
 |         dump += "<none>\n"; | 
 |     } | 
 |     dump += StringPrintf(INDENT2 "AssociatedDisplayUniqueId: "); | 
 |     if (mAssociatedDisplayUniqueId) { | 
 |         dump += StringPrintf("%s\n", mAssociatedDisplayUniqueId->c_str()); | 
 |     } else { | 
 |         dump += "<none>\n"; | 
 |     } | 
 |     dump += StringPrintf(INDENT2 "HasMic:     %s\n", toString(mHasMic)); | 
 |     dump += StringPrintf(INDENT2 "Sources: %s\n", | 
 |                          inputEventSourceToString(deviceInfo.getSources()).c_str()); | 
 |     dump += StringPrintf(INDENT2 "KeyboardType: %d\n", deviceInfo.getKeyboardType()); | 
 |     dump += StringPrintf(INDENT2 "ControllerNum: %d\n", deviceInfo.getControllerNumber()); | 
 |  | 
 |     const std::vector<InputDeviceInfo::MotionRange>& ranges = deviceInfo.getMotionRanges(); | 
 |     if (!ranges.empty()) { | 
 |         dump += INDENT2 "Motion Ranges:\n"; | 
 |         for (size_t i = 0; i < ranges.size(); i++) { | 
 |             const InputDeviceInfo::MotionRange& range = ranges[i]; | 
 |             const char* label = InputEventLookup::getAxisLabel(range.axis); | 
 |             char name[32]; | 
 |             if (label) { | 
 |                 strncpy(name, label, sizeof(name)); | 
 |                 name[sizeof(name) - 1] = '\0'; | 
 |             } else { | 
 |                 snprintf(name, sizeof(name), "%d", range.axis); | 
 |             } | 
 |             dump += StringPrintf(INDENT3 | 
 |                                  "%s: source=%s, " | 
 |                                  "min=%0.3f, max=%0.3f, flat=%0.3f, fuzz=%0.3f, resolution=%0.3f\n", | 
 |                                  name, inputEventSourceToString(range.source).c_str(), range.min, | 
 |                                  range.max, range.flat, range.fuzz, range.resolution); | 
 |         } | 
 |     } | 
 |  | 
 |     for_each_mapper([&dump](InputMapper& mapper) { mapper.dump(dump); }); | 
 |     if (mController) { | 
 |         mController->dump(dump); | 
 |     } | 
 | } | 
 |  | 
 | void InputDevice::addEmptyEventHubDevice(int32_t eventHubId) { | 
 |     if (mDevices.find(eventHubId) != mDevices.end()) { | 
 |         return; | 
 |     } | 
 |     std::unique_ptr<InputDeviceContext> contextPtr(new InputDeviceContext(*this, eventHubId)); | 
 |     std::vector<std::unique_ptr<InputMapper>> mappers; | 
 |  | 
 |     mDevices.insert({eventHubId, std::make_pair(std::move(contextPtr), std::move(mappers))}); | 
 | } | 
 |  | 
 | void InputDevice::addEventHubDevice(int32_t eventHubId, | 
 |                                     const InputReaderConfiguration& readerConfig) { | 
 |     if (mDevices.find(eventHubId) != mDevices.end()) { | 
 |         return; | 
 |     } | 
 |     std::unique_ptr<InputDeviceContext> contextPtr(new InputDeviceContext(*this, eventHubId)); | 
 |     std::vector<std::unique_ptr<InputMapper>> mappers = createMappers(*contextPtr, readerConfig); | 
 |  | 
 |     // insert the context into the devices set | 
 |     mDevices.insert({eventHubId, std::make_pair(std::move(contextPtr), std::move(mappers))}); | 
 |     // Must change generation to flag this device as changed | 
 |     bumpGeneration(); | 
 | } | 
 |  | 
 | void InputDevice::removeEventHubDevice(int32_t eventHubId) { | 
 |     if (mController != nullptr && mController->getEventHubId() == eventHubId) { | 
 |         // Delete mController, since the corresponding eventhub device is going away | 
 |         mController = nullptr; | 
 |     } | 
 |     mDevices.erase(eventHubId); | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::configure(nsecs_t when, | 
 |                                              const InputReaderConfiguration& readerConfig, | 
 |                                              ConfigurationChanges changes) { | 
 |     std::list<NotifyArgs> out; | 
 |     mSources = 0; | 
 |     mClasses = ftl::Flags<InputDeviceClass>(0); | 
 |     mControllerNumber = 0; | 
 |  | 
 |     for_each_subdevice([this](InputDeviceContext& context) { | 
 |         mClasses |= context.getDeviceClasses(); | 
 |         int32_t controllerNumber = context.getDeviceControllerNumber(); | 
 |         if (controllerNumber > 0) { | 
 |             if (mControllerNumber && mControllerNumber != controllerNumber) { | 
 |                 ALOGW("InputDevice::configure(): composite device contains multiple unique " | 
 |                       "controller numbers"); | 
 |             } | 
 |             mControllerNumber = controllerNumber; | 
 |         } | 
 |     }); | 
 |  | 
 |     mIsExternal = mClasses.test(InputDeviceClass::EXTERNAL); | 
 |     mHasMic = mClasses.test(InputDeviceClass::MIC); | 
 |  | 
 |     using Change = InputReaderConfiguration::Change; | 
 |  | 
 |     if (!changes.any() || !isIgnored()) { | 
 |         // Full configuration should happen the first time configure is called | 
 |         // and when the device type is changed. Changing a device type can | 
 |         // affect various other parameters so should result in a | 
 |         // reconfiguration. | 
 |         if (!changes.any() || changes.test(Change::DEVICE_TYPE)) { | 
 |             mConfiguration.clear(); | 
 |             for_each_subdevice([this](InputDeviceContext& context) { | 
 |                 std::optional<PropertyMap> configuration = | 
 |                         getEventHub()->getConfiguration(context.getEventHubId()); | 
 |                 if (configuration) { | 
 |                     mConfiguration.addAll(&(*configuration)); | 
 |                 } | 
 |             }); | 
 |  | 
 |             mAssociatedDeviceType = | 
 |                     getValueByKey(readerConfig.deviceTypeAssociations, mIdentifier.location); | 
 |         } | 
 |  | 
 |         if (!changes.any() || changes.test(Change::KEYBOARD_LAYOUTS)) { | 
 |             if (!mClasses.test(InputDeviceClass::VIRTUAL)) { | 
 |                 std::shared_ptr<KeyCharacterMap> keyboardLayout = | 
 |                         mContext->getPolicy()->getKeyboardLayoutOverlay(mIdentifier); | 
 |                 bool shouldBumpGeneration = false; | 
 |                 for_each_subdevice( | 
 |                         [&keyboardLayout, &shouldBumpGeneration](InputDeviceContext& context) { | 
 |                             if (context.setKeyboardLayoutOverlay(keyboardLayout)) { | 
 |                                 shouldBumpGeneration = true; | 
 |                             } | 
 |                         }); | 
 |                 if (shouldBumpGeneration) { | 
 |                     bumpGeneration(); | 
 |                 } | 
 |             } | 
 |         } | 
 |  | 
 |         if (!changes.any() || changes.test(Change::DEVICE_ALIAS)) { | 
 |             if (!(mClasses.test(InputDeviceClass::VIRTUAL))) { | 
 |                 std::string alias = mContext->getPolicy()->getDeviceAlias(mIdentifier); | 
 |                 if (mAlias != alias) { | 
 |                     mAlias = alias; | 
 |                     bumpGeneration(); | 
 |                 } | 
 |             } | 
 |         } | 
 |  | 
 |         if (changes.test(Change::ENABLED_STATE)) { | 
 |             // Do not execute this code on the first configure, because 'setEnabled' would call | 
 |             // InputMapper::reset, and you can't reset a mapper before it has been configured. | 
 |             // The mappers are configured for the first time at the bottom of this function. | 
 |             auto it = readerConfig.disabledDevices.find(mId); | 
 |             bool enabled = it == readerConfig.disabledDevices.end(); | 
 |             out += setEnabled(enabled, when); | 
 |         } | 
 |  | 
 |         if (!changes.any() || changes.test(Change::DISPLAY_INFO)) { | 
 |             // In most situations, no port or name will be specified. | 
 |             mAssociatedDisplayPort = std::nullopt; | 
 |             mAssociatedDisplayUniqueId = std::nullopt; | 
 |             mAssociatedViewport = std::nullopt; | 
 |             // Find the display port that corresponds to the current input port. | 
 |             const std::string& inputPort = mIdentifier.location; | 
 |             if (!inputPort.empty()) { | 
 |                 const std::unordered_map<std::string, uint8_t>& ports = | 
 |                         readerConfig.portAssociations; | 
 |                 const auto& displayPort = ports.find(inputPort); | 
 |                 if (displayPort != ports.end()) { | 
 |                     mAssociatedDisplayPort = std::make_optional(displayPort->second); | 
 |                 } else { | 
 |                     const std::unordered_map<std::string, std::string>& displayUniqueIds = | 
 |                             readerConfig.uniqueIdAssociations; | 
 |                     const auto& displayUniqueId = displayUniqueIds.find(inputPort); | 
 |                     if (displayUniqueId != displayUniqueIds.end()) { | 
 |                         mAssociatedDisplayUniqueId = displayUniqueId->second; | 
 |                     } | 
 |                 } | 
 |             } | 
 |  | 
 |             // If the device was explicitly disabled by the user, it would be present in the | 
 |             // "disabledDevices" list. If it is associated with a specific display, and it was not | 
 |             // explicitly disabled, then enable/disable the device based on whether we can find the | 
 |             // corresponding viewport. | 
 |             bool enabled = | 
 |                     (readerConfig.disabledDevices.find(mId) == readerConfig.disabledDevices.end()); | 
 |             if (mAssociatedDisplayPort) { | 
 |                 mAssociatedViewport = | 
 |                         readerConfig.getDisplayViewportByPort(*mAssociatedDisplayPort); | 
 |                 if (!mAssociatedViewport) { | 
 |                     ALOGW("Input device %s should be associated with display on port %" PRIu8 ", " | 
 |                           "but the corresponding viewport is not found.", | 
 |                           getName().c_str(), *mAssociatedDisplayPort); | 
 |                     enabled = false; | 
 |                 } | 
 |             } else if (mAssociatedDisplayUniqueId != std::nullopt) { | 
 |                 mAssociatedViewport = | 
 |                         readerConfig.getDisplayViewportByUniqueId(*mAssociatedDisplayUniqueId); | 
 |                 if (!mAssociatedViewport) { | 
 |                     ALOGW("Input device %s should be associated with display %s but the " | 
 |                           "corresponding viewport cannot be found", | 
 |                           getName().c_str(), mAssociatedDisplayUniqueId->c_str()); | 
 |                     enabled = false; | 
 |                 } | 
 |             } | 
 |  | 
 |             if (changes.any()) { | 
 |                 // For first-time configuration, only allow device to be disabled after mappers have | 
 |                 // finished configuring. This is because we need to read some of the properties from | 
 |                 // the device's open fd. | 
 |                 out += setEnabled(enabled, when); | 
 |             } | 
 |         } | 
 |  | 
 |         for_each_mapper([this, when, &readerConfig, changes, &out](InputMapper& mapper) { | 
 |             out += mapper.reconfigure(when, readerConfig, changes); | 
 |             mSources |= mapper.getSources(); | 
 |         }); | 
 |  | 
 |         // If a device is just plugged but it might be disabled, we need to update some info like | 
 |         // axis range of touch from each InputMapper first, then disable it. | 
 |         if (!changes.any()) { | 
 |             out += setEnabled(readerConfig.disabledDevices.find(mId) == | 
 |                                       readerConfig.disabledDevices.end(), | 
 |                               when); | 
 |         } | 
 |     } | 
 |     return out; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::reset(nsecs_t when) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.reset(when); }); | 
 |  | 
 |     mContext->updateGlobalMetaState(); | 
 |  | 
 |     out.push_back(notifyReset(when)); | 
 |     return out; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::process(const RawEvent* rawEvents, size_t count) { | 
 |     // Process all of the events in order for each mapper. | 
 |     // We cannot simply ask each mapper to process them in bulk because mappers may | 
 |     // have side-effects that must be interleaved.  For example, joystick movement events and | 
 |     // gamepad button presses are handled by different mappers but they should be dispatched | 
 |     // in the order received. | 
 |     std::list<NotifyArgs> out; | 
 |     for (const RawEvent* rawEvent = rawEvents; count != 0; rawEvent++) { | 
 |         if (debugRawEvents()) { | 
 |             const auto [type, code, value] = | 
 |                     InputEventLookup::getLinuxEvdevLabel(rawEvent->type, rawEvent->code, | 
 |                                                          rawEvent->value); | 
 |             ALOGD("Input event: eventHubDevice=%d type=%s code=%s value=%s when=%" PRId64, | 
 |                   rawEvent->deviceId, type.c_str(), code.c_str(), value.c_str(), rawEvent->when); | 
 |         } | 
 |  | 
 |         if (mDropUntilNextSync) { | 
 |             if (rawEvent->type == EV_SYN && rawEvent->code == SYN_REPORT) { | 
 |                 mDropUntilNextSync = false; | 
 |                 ALOGD_IF(debugRawEvents(), "Recovered from input event buffer overrun."); | 
 |             } else { | 
 |                 ALOGD_IF(debugRawEvents(), | 
 |                          "Dropped input event while waiting for next input sync."); | 
 |             } | 
 |         } else if (rawEvent->type == EV_SYN && rawEvent->code == SYN_DROPPED) { | 
 |             ALOGI("Detected input event buffer overrun for device %s.", getName().c_str()); | 
 |             mDropUntilNextSync = true; | 
 |             out += reset(rawEvent->when); | 
 |         } else { | 
 |             for_each_mapper_in_subdevice(rawEvent->deviceId, [&](InputMapper& mapper) { | 
 |                 out += mapper.process(rawEvent); | 
 |             }); | 
 |         } | 
 |         --count; | 
 |     } | 
 |     return out; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::timeoutExpired(nsecs_t when) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.timeoutExpired(when); }); | 
 |     return out; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::updateExternalStylusState(const StylusState& state) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.updateExternalStylusState(state); }); | 
 |     return out; | 
 | } | 
 |  | 
 | InputDeviceInfo InputDevice::getDeviceInfo() { | 
 |     InputDeviceInfo outDeviceInfo; | 
 |     outDeviceInfo.initialize(mId, mGeneration, mControllerNumber, mIdentifier, mAlias, mIsExternal, | 
 |                              mHasMic, getAssociatedDisplayId().value_or(ADISPLAY_ID_NONE)); | 
 |  | 
 |     for_each_mapper( | 
 |             [&outDeviceInfo](InputMapper& mapper) { mapper.populateDeviceInfo(outDeviceInfo); }); | 
 |  | 
 |     if (mController) { | 
 |         mController->populateDeviceInfo(&outDeviceInfo); | 
 |     } | 
 |     return outDeviceInfo; | 
 | } | 
 |  | 
 | int32_t InputDevice::getKeyCodeState(uint32_t sourceMask, int32_t keyCode) { | 
 |     return getState(sourceMask, keyCode, &InputMapper::getKeyCodeState); | 
 | } | 
 |  | 
 | int32_t InputDevice::getScanCodeState(uint32_t sourceMask, int32_t scanCode) { | 
 |     return getState(sourceMask, scanCode, &InputMapper::getScanCodeState); | 
 | } | 
 |  | 
 | int32_t InputDevice::getSwitchState(uint32_t sourceMask, int32_t switchCode) { | 
 |     return getState(sourceMask, switchCode, &InputMapper::getSwitchState); | 
 | } | 
 |  | 
 | int32_t InputDevice::getState(uint32_t sourceMask, int32_t code, GetStateFunc getStateFunc) { | 
 |     int32_t result = AKEY_STATE_UNKNOWN; | 
 |     for (auto& deviceEntry : mDevices) { | 
 |         auto& devicePair = deviceEntry.second; | 
 |         auto& mappers = devicePair.second; | 
 |         for (auto& mapperPtr : mappers) { | 
 |             InputMapper& mapper = *mapperPtr; | 
 |             if (sourcesMatchMask(mapper.getSources(), sourceMask)) { | 
 |                 // If any mapper reports AKEY_STATE_DOWN or AKEY_STATE_VIRTUAL, return that | 
 |                 // value.  Otherwise, return AKEY_STATE_UP as long as one mapper reports it. | 
 |                 int32_t currentResult = (mapper.*getStateFunc)(sourceMask, code); | 
 |                 if (currentResult >= AKEY_STATE_DOWN) { | 
 |                     return currentResult; | 
 |                 } else if (currentResult == AKEY_STATE_UP) { | 
 |                     result = currentResult; | 
 |                 } | 
 |             } | 
 |         } | 
 |     } | 
 |     return result; | 
 | } | 
 |  | 
 | std::vector<std::unique_ptr<InputMapper>> InputDevice::createMappers( | 
 |         InputDeviceContext& contextPtr, const InputReaderConfiguration& readerConfig) { | 
 |     ftl::Flags<InputDeviceClass> classes = contextPtr.getDeviceClasses(); | 
 |     std::vector<std::unique_ptr<InputMapper>> mappers; | 
 |  | 
 |     // Switch-like devices. | 
 |     if (classes.test(InputDeviceClass::SWITCH)) { | 
 |         mappers.push_back(createInputMapper<SwitchInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Scroll wheel-like devices. | 
 |     if (classes.test(InputDeviceClass::ROTARY_ENCODER)) { | 
 |         mappers.push_back(createInputMapper<RotaryEncoderInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Vibrator-like devices. | 
 |     if (classes.test(InputDeviceClass::VIBRATOR)) { | 
 |         mappers.push_back(createInputMapper<VibratorInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Battery-like devices or light-containing devices. | 
 |     // PeripheralController will be created with associated EventHub device. | 
 |     if (classes.test(InputDeviceClass::BATTERY) || classes.test(InputDeviceClass::LIGHT)) { | 
 |         mController = std::make_unique<PeripheralController>(contextPtr); | 
 |     } | 
 |  | 
 |     // Keyboard-like devices. | 
 |     uint32_t keyboardSource = 0; | 
 |     int32_t keyboardType = AINPUT_KEYBOARD_TYPE_NON_ALPHABETIC; | 
 |     if (classes.test(InputDeviceClass::KEYBOARD)) { | 
 |         keyboardSource |= AINPUT_SOURCE_KEYBOARD; | 
 |     } | 
 |     if (classes.test(InputDeviceClass::ALPHAKEY)) { | 
 |         keyboardType = AINPUT_KEYBOARD_TYPE_ALPHABETIC; | 
 |     } | 
 |     if (classes.test(InputDeviceClass::DPAD)) { | 
 |         keyboardSource |= AINPUT_SOURCE_DPAD; | 
 |     } | 
 |     if (classes.test(InputDeviceClass::GAMEPAD)) { | 
 |         keyboardSource |= AINPUT_SOURCE_GAMEPAD; | 
 |     } | 
 |  | 
 |     if (keyboardSource != 0) { | 
 |         mappers.push_back(createInputMapper<KeyboardInputMapper>(contextPtr, readerConfig, | 
 |                                                                  keyboardSource, keyboardType)); | 
 |     } | 
 |  | 
 |     // Cursor-like devices. | 
 |     if (classes.test(InputDeviceClass::CURSOR)) { | 
 |         mappers.push_back(createInputMapper<CursorInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Touchscreens and touchpad devices. | 
 |     static const bool ENABLE_TOUCHPAD_GESTURES_LIBRARY = | 
 |             sysprop::InputProperties::enable_touchpad_gestures_library().value_or(true); | 
 |     // TODO(b/272518665): Fix the new touchpad stack for Sony DualShock 4 (5c4, 9cc) touchpads, or | 
 |     // at least load this setting from the IDC file. | 
 |     const InputDeviceIdentifier identifier = contextPtr.getDeviceIdentifier(); | 
 |     const bool isSonyDualShock4Touchpad = identifier.vendor == 0x054c && | 
 |             (identifier.product == 0x05c4 || identifier.product == 0x09cc); | 
 |     if (ENABLE_TOUCHPAD_GESTURES_LIBRARY && classes.test(InputDeviceClass::TOUCHPAD) && | 
 |         classes.test(InputDeviceClass::TOUCH_MT) && !isSonyDualShock4Touchpad) { | 
 |         mappers.push_back(createInputMapper<TouchpadInputMapper>(contextPtr, readerConfig)); | 
 |     } else if (classes.test(InputDeviceClass::TOUCH_MT)) { | 
 |         mappers.push_back(std::make_unique<MultiTouchInputMapper>(contextPtr, readerConfig)); | 
 |     } else if (classes.test(InputDeviceClass::TOUCH)) { | 
 |         mappers.push_back(std::make_unique<SingleTouchInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Joystick-like devices. | 
 |     if (classes.test(InputDeviceClass::JOYSTICK)) { | 
 |         mappers.push_back(createInputMapper<JoystickInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // Motion sensor enabled devices. | 
 |     if (classes.test(InputDeviceClass::SENSOR)) { | 
 |         mappers.push_back(createInputMapper<SensorInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |  | 
 |     // External stylus-like devices. | 
 |     if (classes.test(InputDeviceClass::EXTERNAL_STYLUS)) { | 
 |         mappers.push_back(createInputMapper<ExternalStylusInputMapper>(contextPtr, readerConfig)); | 
 |     } | 
 |     return mappers; | 
 | } | 
 |  | 
 | bool InputDevice::markSupportedKeyCodes(uint32_t sourceMask, const std::vector<int32_t>& keyCodes, | 
 |                                         uint8_t* outFlags) { | 
 |     bool result = false; | 
 |     for_each_mapper([&result, sourceMask, keyCodes, outFlags](InputMapper& mapper) { | 
 |         if (sourcesMatchMask(mapper.getSources(), sourceMask)) { | 
 |             result |= mapper.markSupportedKeyCodes(sourceMask, keyCodes, outFlags); | 
 |         } | 
 |     }); | 
 |     return result; | 
 | } | 
 |  | 
 | int32_t InputDevice::getKeyCodeForKeyLocation(int32_t locationKeyCode) const { | 
 |     std::optional<int32_t> result = first_in_mappers<int32_t>( | 
 |             [locationKeyCode](const InputMapper& mapper) -> std::optional<int32_t> const { | 
 |                 if (sourcesMatchMask(mapper.getSources(), AINPUT_SOURCE_KEYBOARD)) { | 
 |                     return std::make_optional(mapper.getKeyCodeForKeyLocation(locationKeyCode)); | 
 |                 } | 
 |                 return std::nullopt; | 
 |             }); | 
 |     if (!result) { | 
 |         ALOGE("Failed to get key code for key location: No matching InputMapper with source mask " | 
 |               "KEYBOARD found. The provided input device with id %d has sources %s.", | 
 |               getId(), inputEventSourceToString(getSources()).c_str()); | 
 |         return AKEYCODE_UNKNOWN; | 
 |     } | 
 |     return *result; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::vibrate(const VibrationSequence& sequence, ssize_t repeat, | 
 |                                            int32_t token) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.vibrate(sequence, repeat, token); }); | 
 |     return out; | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::cancelVibrate(int32_t token) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.cancelVibrate(token); }); | 
 |     return out; | 
 | } | 
 |  | 
 | bool InputDevice::isVibrating() { | 
 |     bool vibrating = false; | 
 |     for_each_mapper([&vibrating](InputMapper& mapper) { vibrating |= mapper.isVibrating(); }); | 
 |     return vibrating; | 
 | } | 
 |  | 
 | /* There's no guarantee the IDs provided by the different mappers are unique, so if we have two | 
 |  * different vibration mappers then we could have duplicate IDs. | 
 |  * Alternatively, if we have a merged device that has multiple evdev nodes with FF_* capabilities, | 
 |  * we would definitely have duplicate IDs. | 
 |  */ | 
 | std::vector<int32_t> InputDevice::getVibratorIds() { | 
 |     std::vector<int32_t> vibrators; | 
 |     for_each_mapper([&vibrators](InputMapper& mapper) { | 
 |         std::vector<int32_t> devVibs = mapper.getVibratorIds(); | 
 |         vibrators.reserve(vibrators.size() + devVibs.size()); | 
 |         vibrators.insert(vibrators.end(), devVibs.begin(), devVibs.end()); | 
 |     }); | 
 |     return vibrators; | 
 | } | 
 |  | 
 | bool InputDevice::enableSensor(InputDeviceSensorType sensorType, | 
 |                                std::chrono::microseconds samplingPeriod, | 
 |                                std::chrono::microseconds maxBatchReportLatency) { | 
 |     bool success = true; | 
 |     for_each_mapper( | 
 |             [&success, sensorType, samplingPeriod, maxBatchReportLatency](InputMapper& mapper) { | 
 |                 success &= mapper.enableSensor(sensorType, samplingPeriod, maxBatchReportLatency); | 
 |             }); | 
 |     return success; | 
 | } | 
 |  | 
 | void InputDevice::disableSensor(InputDeviceSensorType sensorType) { | 
 |     for_each_mapper([sensorType](InputMapper& mapper) { mapper.disableSensor(sensorType); }); | 
 | } | 
 |  | 
 | void InputDevice::flushSensor(InputDeviceSensorType sensorType) { | 
 |     for_each_mapper([sensorType](InputMapper& mapper) { mapper.flushSensor(sensorType); }); | 
 | } | 
 |  | 
 | std::list<NotifyArgs> InputDevice::cancelTouch(nsecs_t when, nsecs_t readTime) { | 
 |     std::list<NotifyArgs> out; | 
 |     for_each_mapper([&](InputMapper& mapper) { out += mapper.cancelTouch(when, readTime); }); | 
 |     return out; | 
 | } | 
 |  | 
 | bool InputDevice::setLightColor(int32_t lightId, int32_t color) { | 
 |     return mController ? mController->setLightColor(lightId, color) : false; | 
 | } | 
 |  | 
 | bool InputDevice::setLightPlayerId(int32_t lightId, int32_t playerId) { | 
 |     return mController ? mController->setLightPlayerId(lightId, playerId) : false; | 
 | } | 
 |  | 
 | std::optional<int32_t> InputDevice::getLightColor(int32_t lightId) { | 
 |     return mController ? mController->getLightColor(lightId) : std::nullopt; | 
 | } | 
 |  | 
 | std::optional<int32_t> InputDevice::getLightPlayerId(int32_t lightId) { | 
 |     return mController ? mController->getLightPlayerId(lightId) : std::nullopt; | 
 | } | 
 |  | 
 | int32_t InputDevice::getMetaState() { | 
 |     int32_t result = 0; | 
 |     for_each_mapper([&result](InputMapper& mapper) { result |= mapper.getMetaState(); }); | 
 |     return result; | 
 | } | 
 |  | 
 | void InputDevice::updateMetaState(int32_t keyCode) { | 
 |     first_in_mappers<bool>([keyCode](InputMapper& mapper) { | 
 |         if (sourcesMatchMask(mapper.getSources(), AINPUT_SOURCE_KEYBOARD) && | 
 |             mapper.updateMetaState(keyCode)) { | 
 |             return std::make_optional(true); | 
 |         } | 
 |         return std::optional<bool>(); | 
 |     }); | 
 | } | 
 |  | 
 | void InputDevice::addKeyRemapping(int32_t fromKeyCode, int32_t toKeyCode) { | 
 |     for_each_subdevice([fromKeyCode, toKeyCode](auto& context) { | 
 |         context.addKeyRemapping(fromKeyCode, toKeyCode); | 
 |     }); | 
 | } | 
 |  | 
 | void InputDevice::bumpGeneration() { | 
 |     mGeneration = mContext->bumpGeneration(); | 
 | } | 
 |  | 
 | NotifyDeviceResetArgs InputDevice::notifyReset(nsecs_t when) { | 
 |     return NotifyDeviceResetArgs(mContext->getNextId(), when, mId); | 
 | } | 
 |  | 
 | std::optional<int32_t> InputDevice::getAssociatedDisplayId() { | 
 |     // Check if we had associated to the specific display. | 
 |     if (mAssociatedViewport) { | 
 |         return mAssociatedViewport->displayId; | 
 |     } | 
 |  | 
 |     // No associated display port, check if some InputMapper is associated. | 
 |     return first_in_mappers<int32_t>( | 
 |             [](InputMapper& mapper) { return mapper.getAssociatedDisplayId(); }); | 
 | } | 
 |  | 
 | // returns the number of mappers associated with the device | 
 | size_t InputDevice::getMapperCount() { | 
 |     size_t count = 0; | 
 |     for (auto& deviceEntry : mDevices) { | 
 |         auto& devicePair = deviceEntry.second; | 
 |         auto& mappers = devicePair.second; | 
 |         count += mappers.size(); | 
 |     } | 
 |     return count; | 
 | } | 
 |  | 
 | void InputDevice::updateLedState(bool reset) { | 
 |     for_each_mapper([reset](InputMapper& mapper) { mapper.updateLedState(reset); }); | 
 | } | 
 |  | 
 | std::optional<int32_t> InputDevice::getBatteryEventHubId() const { | 
 |     return mController ? std::make_optional(mController->getEventHubId()) : std::nullopt; | 
 | } | 
 |  | 
 | InputDeviceContext::InputDeviceContext(InputDevice& device, int32_t eventHubId) | 
 |       : mDevice(device), | 
 |         mContext(device.getContext()), | 
 |         mEventHub(device.getContext()->getEventHub()), | 
 |         mId(eventHubId), | 
 |         mDeviceId(device.getId()) {} | 
 |  | 
 | InputDeviceContext::~InputDeviceContext() {} | 
 |  | 
 | } // namespace android |