core: Remove frontend/input
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german77
Narr the Reg
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <functional>
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#include <memory>
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#include <string>
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#include <tuple>
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#include <unordered_map>
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#include <utility>
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#include "common/logging/log.h"
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#include "common/param_package.h"
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#include "common/quaternion.h"
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#include "common/vector_math.h"
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namespace Input {
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enum class AnalogDirection : u8 {
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RIGHT,
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LEFT,
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UP,
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DOWN,
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};
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struct AnalogProperties {
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float deadzone;
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float range;
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float threshold;
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};
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template <typename StatusType>
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struct InputCallback {
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std::function<void(StatusType)> on_change;
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};
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/// An abstract class template for an input device (a button, an analog input, etc.).
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template <typename StatusType>
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class InputDevice {
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public:
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virtual ~InputDevice() = default;
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virtual StatusType GetStatus() const {
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return {};
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}
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virtual StatusType GetRawStatus() const {
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return GetStatus();
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}
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virtual AnalogProperties GetAnalogProperties() const {
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return {};
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}
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virtual bool GetAnalogDirectionStatus([[maybe_unused]] AnalogDirection direction) const {
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return {};
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}
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virtual bool SetRumblePlay([[maybe_unused]] f32 amp_low, [[maybe_unused]] f32 freq_low,
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[[maybe_unused]] f32 amp_high,
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[[maybe_unused]] f32 freq_high) const {
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return {};
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}
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void SetCallback(InputCallback<StatusType> callback_) {
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callback = std::move(callback_);
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}
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void TriggerOnChange() {
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if (callback.on_change) {
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callback.on_change(GetStatus());
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}
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}
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private:
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InputCallback<StatusType> callback;
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};
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/// An abstract class template for a factory that can create input devices.
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template <typename InputDeviceType>
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class Factory {
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public:
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virtual ~Factory() = default;
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virtual std::unique_ptr<InputDeviceType> Create(const Common::ParamPackage&) = 0;
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};
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namespace Impl {
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template <typename InputDeviceType>
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using FactoryListType = std::unordered_map<std::string, std::shared_ptr<Factory<InputDeviceType>>>;
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template <typename InputDeviceType>
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struct FactoryList {
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static FactoryListType<InputDeviceType> list;
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};
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template <typename InputDeviceType>
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FactoryListType<InputDeviceType> FactoryList<InputDeviceType>::list;
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} // namespace Impl
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/**
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* Registers an input device factory.
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* @tparam InputDeviceType the type of input devices the factory can create
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* @param name the name of the factory. Will be used to match the "engine" parameter when creating
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* a device
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* @param factory the factory object to register
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*/
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template <typename InputDeviceType>
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void RegisterFactory(const std::string& name, std::shared_ptr<Factory<InputDeviceType>> factory) {
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auto pair = std::make_pair(name, std::move(factory));
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if (!Impl::FactoryList<InputDeviceType>::list.insert(std::move(pair)).second) {
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LOG_ERROR(Input, "Factory '{}' already registered", name);
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}
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}
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/**
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* Unregisters an input device factory.
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* @tparam InputDeviceType the type of input devices the factory can create
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* @param name the name of the factory to unregister
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*/
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template <typename InputDeviceType>
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void UnregisterFactory(const std::string& name) {
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if (Impl::FactoryList<InputDeviceType>::list.erase(name) == 0) {
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LOG_ERROR(Input, "Factory '{}' not registered", name);
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}
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}
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/**
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* Create an input device from given paramters.
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* @tparam InputDeviceType the type of input devices to create
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* @param params a serialized ParamPackage string contains all parameters for creating the device
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*/
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template <typename InputDeviceType>
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std::unique_ptr<InputDeviceType> CreateDevice(const std::string& params) {
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const Common::ParamPackage package(params);
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const std::string engine = package.Get("engine", "null");
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const auto& factory_list = Impl::FactoryList<InputDeviceType>::list;
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const auto pair = factory_list.find(engine);
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if (pair == factory_list.end()) {
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if (engine != "null") {
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LOG_ERROR(Input, "Unknown engine name: {}", engine);
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}
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return std::make_unique<InputDeviceType>();
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}
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return pair->second->Create(package);
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}
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/**
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* A button device is an input device that returns bool as status.
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* true for pressed; false for released.
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*/
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using ButtonDevice = InputDevice<bool>;
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/**
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* An analog device is an input device that returns a tuple of x and y coordinates as status. The
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* coordinates are within the unit circle. x+ is defined as right direction, and y+ is defined as up
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* direction
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*/
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using AnalogDevice = InputDevice<std::tuple<float, float>>;
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/**
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* A vibration device is an input device that returns an unsigned byte as status.
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* It represents whether the vibration device supports vibration or not.
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* If the status returns 1, it supports vibration. Otherwise, it does not support vibration.
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*/
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using VibrationDevice = InputDevice<u8>;
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/**
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* A motion status is an object that returns a tuple of accelerometer state vector,
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* gyroscope state vector, rotation state vector, orientation state matrix and quaterion state
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* vector.
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*
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* For both 3D vectors:
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* x+ is the same direction as RIGHT on D-pad.
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* y+ is normal to the touch screen, pointing outward.
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* z+ is the same direction as UP on D-pad.
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*
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* For accelerometer state vector
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* Units: g (gravitational acceleration)
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*
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* For gyroscope state vector:
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* Orientation is determined by right-hand rule.
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* Units: deg/sec
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*
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* For rotation state vector
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* Units: rotations
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*
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* For orientation state matrix
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* x vector
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* y vector
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* z vector
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*
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* For quaternion state vector
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* xyz vector
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* w float
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*/
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using MotionStatus = std::tuple<Common::Vec3<float>, Common::Vec3<float>, Common::Vec3<float>,
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std::array<Common::Vec3f, 3>, Common::Quaternion<f32>>;
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/**
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* A motion device is an input device that returns a motion status object
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*/
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using MotionDevice = InputDevice<MotionStatus>;
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/**
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* A touch status is an object that returns an array of 16 tuple elements of two floats and a bool.
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* The floats are x and y coordinates in the range 0.0 - 1.0, and the bool indicates whether it is
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* pressed.
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*/
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using TouchStatus = std::array<std::tuple<float, float, bool>, 16>;
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/**
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* A touch device is an input device that returns a touch status object
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*/
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using TouchDevice = InputDevice<TouchStatus>;
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/**
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* A mouse device is an input device that returns a tuple of two floats and four ints.
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* The first two floats are X and Y device coordinates of the mouse (from 0-1).
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* The s32s are the mouse wheel.
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*/
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using MouseDevice = InputDevice<std::tuple<float, float, s32, s32>>;
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} // namespace Input
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