1 files changed, 192 insertions, 0 deletions

diff --git a/src/hid_core/frontend/emulated_console.h b/src/hid_core/frontend/emulated_console.h
new file mode 100644
index 000000000..847551395
--- /dev/null
+++ b/src/hid_core/frontend/emulated_console.h
@@ -0,0 +1,192 @@
+// 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 <optional>
+#include <unordered_map>
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+#include "common/input.h"
+#include "common/param_package.h"
+#include "common/point.h"
+#include "common/quaternion.h"
+#include "common/vector_math.h"
+#include "hid_core/frontend/motion_input.h"
+#include "hid_core/hid_types.h"
+
+namespace Core::HID {
+static constexpr std::size_t MaxTouchDevices = 32;
+static constexpr std::size_t MaxActiveTouchInputs = 16;
+
+struct ConsoleMotionInfo {
+    Common::Input::MotionStatus raw_status{};
+    MotionInput emulated{};
+};
+
+using ConsoleMotionDevices = std::array<std::unique_ptr<Common::Input::InputDevice>, 2>;
+using TouchDevices = std::array<std::unique_ptr<Common::Input::InputDevice>, MaxTouchDevices>;
+
+using ConsoleMotionParams = std::array<Common::ParamPackage, 2>;
+using TouchParams = std::array<Common::ParamPackage, MaxTouchDevices>;
+
+using ConsoleMotionValues = ConsoleMotionInfo;
+using TouchValues = std::array<Common::Input::TouchStatus, MaxTouchDevices>;
+
+// Contains all motion related data that is used on the services
+struct ConsoleMotion {
+    Common::Vec3f accel{};
+    Common::Vec3f gyro{};
+    Common::Vec3f rotation{};
+    std::array<Common::Vec3f, 3> orientation{};
+    Common::Quaternion<f32> quaternion{};
+    Common::Vec3f gyro_bias{};
+    f32 verticalization_error{};
+    bool is_at_rest{};
+};
+
+using TouchFingerState = std::array<TouchFinger, MaxActiveTouchInputs>;
+
+struct ConsoleStatus {
+    // Data from input_common
+    ConsoleMotionValues motion_values{};
+    TouchValues touch_values{};
+
+    // Data for HID services
+    ConsoleMotion motion_state{};
+    TouchFingerState touch_state{};
+};
+
+enum class ConsoleTriggerType {
+    Motion,
+    Touch,
+    All,
+};
+
+struct ConsoleUpdateCallback {
+    std::function<void(ConsoleTriggerType)> on_change;
+};
+
+class EmulatedConsole {
+public:
+    /**
+     * Contains all input data within the emulated switch console tablet such as touch and motion
+     */
+    explicit EmulatedConsole();
+    ~EmulatedConsole();
+
+    YUZU_NON_COPYABLE(EmulatedConsole);
+    YUZU_NON_MOVEABLE(EmulatedConsole);
+
+    /// Removes all callbacks created from input devices
+    void UnloadInput();
+
+    /**
+     * Sets the emulated console into configuring mode
+     * This prevents the modification of the HID state of the emulated console by input commands
+     */
+    void EnableConfiguration();
+
+    /// Returns the emulated console into normal mode, allowing the modification of the HID state
+    void DisableConfiguration();
+
+    /// Returns true if the emulated console 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 current mapped motion device
+    Common::ParamPackage GetMotionParam() const;
+
+    /**
+     * Updates the current mapped motion device
+     * @param param ParamPackage with controller data to be mapped
+     */
+    void SetMotionParam(Common::ParamPackage param);
+
+    /// Returns the latest status of motion input from the console with parameters
+    ConsoleMotionValues GetMotionValues() const;
+
+    /// Returns the latest status of touch input from the console with parameters
+    TouchValues GetTouchValues() const;
+
+    /// Returns the latest status of motion input from the console
+    ConsoleMotion GetMotion() const;
+
+    /// Returns the latest status of touch input from the console
+    TouchFingerState GetTouch() const;
+
+    /**
+     * Adds a callback to the list of events
+     * @param update_callback A ConsoleUpdateCallback that will be triggered
+     * @return an unique key corresponding to the callback index in the list
+     */
+    int SetCallback(ConsoleUpdateCallback 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:
+    /// Creates and stores the touch params
+    void SetTouchParams();
+
+    /**
+     * Updates the motion status of the console
+     * @param callback A CallbackStatus containing gyro and accelerometer data
+     */
+    void SetMotion(const Common::Input::CallbackStatus& callback);
+
+    /**
+     * Updates the touch status of the console
+     * @param callback A CallbackStatus containing the touch position
+     * @param index Finger ID to be updated
+     */
+    void SetTouch(const Common::Input::CallbackStatus& callback, std::size_t index);
+
+    std::optional<std::size_t> GetIndexFromFingerId(std::size_t finger_id) const;
+
+    std::optional<std::size_t> GetNextFreeIndex() const;
+
+    /**
+     * Triggers a callback that something has changed on the console status
+     * @param type Input type of the event to trigger
+     */
+    void TriggerOnChange(ConsoleTriggerType type);
+
+    bool is_configuring{false};
+    f32 motion_sensitivity{0.01f};
+
+    ConsoleMotionParams motion_params;
+    TouchParams touch_params;
+
+    ConsoleMotionDevices motion_devices;
+    TouchDevices touch_devices;
+
+    mutable std::mutex mutex;
+    mutable std::mutex callback_mutex;
+    std::unordered_map<int, ConsoleUpdateCallback> callback_list;
+    int last_callback_key = 0;
+
+    // Stores the current status of all console input
+    ConsoleStatus console;
+};
+
+} // namespace Core::HID