1 files changed, 212 insertions, 0 deletions
diff --git a/src/hid_core/frontend/emulated_devices.h b/src/hid_core/frontend/emulated_devices.h
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index 000000000..b2e57318c
--- /dev/null
+++ b/src/hid_core/frontend/emulated_devices.h
@@ -0,0 +1,212 @@
+// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <array>
+#include <functional>
+#include <memory>
+#include <mutex>
+#include <unordered_map>
+#include <vector>
+
+#include "common/common_types.h"
+#include "common/input.h"
+#include "common/param_package.h"
+#include "common/settings.h"
+#include "hid_core/hid_types.h"
+
+namespace Core::HID {
+using KeyboardDevices = std::array<std::unique_ptr<Common::Input::InputDevice>,
+                                   Settings::NativeKeyboard::NumKeyboardKeys>;
+using KeyboardModifierDevices = std::array<std::unique_ptr<Common::Input::InputDevice>,
+                                           Settings::NativeKeyboard::NumKeyboardMods>;
+using MouseButtonDevices = std::array<std::unique_ptr<Common::Input::InputDevice>,
+                                      Settings::NativeMouseButton::NumMouseButtons>;
+using MouseWheelDevices = std::array<std::unique_ptr<Common::Input::InputDevice>,
+                                     Settings::NativeMouseWheel::NumMouseWheels>;
+using MouseStickDevice = std::unique_ptr<Common::Input::InputDevice>;
+
+using MouseButtonParams =
+    std::array<Common::ParamPackage, Settings::NativeMouseButton::NumMouseButtons>;
+
+using KeyboardValues =
+    std::array<Common::Input::ButtonStatus, Settings::NativeKeyboard::NumKeyboardKeys>;
+using KeyboardModifierValues =
+    std::array<Common::Input::ButtonStatus, Settings::NativeKeyboard::NumKeyboardMods>;
+using MouseButtonValues =
+    std::array<Common::Input::ButtonStatus, Settings::NativeMouseButton::NumMouseButtons>;
+using MouseWheelValues =
+    std::array<Common::Input::AnalogStatus, Settings::NativeMouseWheel::NumMouseWheels>;
+using MouseStickValue = Common::Input::TouchStatus;
+
+struct MousePosition {
+    f32 x;
+    f32 y;
+};
+
+struct DeviceStatus {
+    // Data from input_common
+    KeyboardValues keyboard_values{};
+    KeyboardModifierValues keyboard_moddifier_values{};
+    MouseButtonValues mouse_button_values{};
+    MouseWheelValues mouse_wheel_values{};
+    MouseStickValue mouse_stick_value{};
+
+    // Data for HID services
+    KeyboardKey keyboard_state{};
+    KeyboardModifier keyboard_moddifier_state{};
+    MouseButton mouse_button_state{};
+    MousePosition mouse_position_state{};
+    AnalogStickState mouse_wheel_state{};
+};
+
+enum class DeviceTriggerType {
+    Keyboard,
+    KeyboardModdifier,
+    Mouse,
+    RingController,
+};
+
+struct InterfaceUpdateCallback {
+    std::function<void(DeviceTriggerType)> on_change;
+};
+
+class EmulatedDevices {
+public:
+    /**
+     * Contains all input data related to external devices that aren't necessarily a controller
+     * This includes devices such as the keyboard or mouse
+     */
+    explicit EmulatedDevices();
+    ~EmulatedDevices();
+
+    YUZU_NON_COPYABLE(EmulatedDevices);
+    YUZU_NON_MOVEABLE(EmulatedDevices);
+
+    /// Removes all callbacks created from input devices
+    void UnloadInput();
+
+    /**
+     * Sets the emulated devices into configuring mode
+     * This prevents the modification of the HID state of the emulated devices by input commands
+     */
+    void EnableConfiguration();
+
+    /// Returns the emulated devices into normal mode, allowing the modification of the HID state
+    void DisableConfiguration();
+
+    /// Returns true if the emulated device is in configuring mode
+    bool IsConfiguring() const;
+
+    /// Reload all input devices
+    void ReloadInput();
+
+    /// Overrides current mapped devices with the stored configuration and reloads all input devices
+    void ReloadFromSettings();
+
+    /// Saves the current mapped configuration
+    void SaveCurrentConfig();
+
+    /// Reverts any mapped changes made that weren't saved
+    void RestoreConfig();
+
+    /// Returns the latest status of button input from the keyboard with parameters
+    KeyboardValues GetKeyboardValues() const;
+
+    /// Returns the latest status of button input from the keyboard modifiers with parameters
+    KeyboardModifierValues GetKeyboardModdifierValues() const;
+
+    /// Returns the latest status of button input from the mouse with parameters
+    MouseButtonValues GetMouseButtonsValues() const;
+
+    /// Returns the latest status of button input from the keyboard
+    KeyboardKey GetKeyboard() const;
+
+    /// Returns the latest status of button input from the keyboard modifiers
+    KeyboardModifier GetKeyboardModifier() const;
+
+    /// Returns the latest status of button input from the mouse
+    MouseButton GetMouseButtons() const;
+
+    /// Returns the latest mouse coordinates
+    MousePosition GetMousePosition() const;
+
+    /// Returns the latest mouse wheel change
+    AnalogStickState GetMouseWheel() const;
+
+    /**
+     * Adds a callback to the list of events
+     * @param update_callback InterfaceUpdateCallback that will be triggered
+     * @return an unique key corresponding to the callback index in the list
+     */
+    int SetCallback(InterfaceUpdateCallback update_callback);
+
+    /**
+     * Removes a callback from the list stopping any future events to this object
+     * @param key Key corresponding to the callback index in the list
+     */
+    void DeleteCallback(int key);
+
+private:
+    /// Helps assigning a value to keyboard_state
+    void UpdateKey(std::size_t key_index, bool status);
+
+    /**
+     * Updates the touch status of the keyboard device
+     * @param callback A CallbackStatus containing the key status
+     * @param index key ID to be updated
+     */
+    void SetKeyboardButton(const Common::Input::CallbackStatus& callback, std::size_t index);
+
+    /**
+     * Updates the keyboard status of the keyboard device
+     * @param callback A CallbackStatus containing the modifier key status
+     * @param index modifier key ID to be updated
+     */
+    void SetKeyboardModifier(const Common::Input::CallbackStatus& callback, std::size_t index);
+
+    /**
+     * Updates the mouse button status of the mouse device
+     * @param callback A CallbackStatus containing the button status
+     * @param index Button ID to be updated
+     */
+    void SetMouseButton(const Common::Input::CallbackStatus& callback, std::size_t index);
+
+    /**
+     * Updates the mouse wheel status of the mouse device
+     * @param callback A CallbackStatus containing the wheel status
+     * @param index wheel ID to be updated
+     */
+    void SetMouseWheel(const Common::Input::CallbackStatus& callback, std::size_t index);
+
+    /**
+     * Updates the mouse position status of the mouse device
+     * @param callback A CallbackStatus containing the position status
+     */
+    void SetMousePosition(const Common::Input::CallbackStatus& callback);
+
+    /**
+     * Triggers a callback that something has changed on the device status
+     * @param type Input type of the event to trigger
+     */
+    void TriggerOnChange(DeviceTriggerType type);
+
+    bool is_configuring{false};
+
+    KeyboardDevices keyboard_devices;
+    KeyboardModifierDevices keyboard_modifier_devices;
+    MouseButtonDevices mouse_button_devices;
+    MouseWheelDevices mouse_wheel_devices;
+    MouseStickDevice mouse_stick_device;
+
+    mutable std::mutex mutex;
+    mutable std::mutex callback_mutex;
+    std::unordered_map<int, InterfaceUpdateCallback> callback_list;
+    int last_callback_key = 0;
+
+    // Stores the current status of all external device input
+    DeviceStatus device_status;
+};
+
+} // namespace Core::HID