eden/src/input_common/drivers/joycon.h

// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later

// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later

#pragma once

#include <array>
#include <span>
#include <thread>
#include <SDL3/SDL_hidapi.h>

#include "input_common/input_engine.h"

namespace InputCommon::Joycon {
using SerialNumber = std::array<u8, 15>;
struct Battery;
struct Color;
struct MotionData;
struct TagInfo;
enum class ControllerType : u8;
enum class IrsResolution;
class JoyconDriver;
} // namespace InputCommon::Joycon

namespace InputCommon {

class Joycons final : public InputCommon::InputEngine {
public:
    explicit Joycons(const std::string& input_engine_);

    ~Joycons();

    bool IsVibrationEnabled(const PadIdentifier& identifier) override;
    Common::Input::DriverResult SetVibration(
        const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) override;

    Common::Input::DriverResult SetLeds(const PadIdentifier& identifier,
                                        const Common::Input::LedStatus& led_status) override;

    Common::Input::DriverResult SetCameraFormat(const PadIdentifier& identifier,
                                                Common::Input::CameraFormat camera_format) override;

    Common::Input::NfcState SupportsNfc(const PadIdentifier& identifier) const override;
    Common::Input::NfcState StartNfcPolling(const PadIdentifier& identifier) override;
    Common::Input::NfcState StopNfcPolling(const PadIdentifier& identifier) override;
    Common::Input::NfcState ReadAmiiboData(const PadIdentifier& identifier,
                                           std::vector<u8>& out_data) override;
    Common::Input::NfcState WriteNfcData(const PadIdentifier& identifier,
                                         const std::vector<u8>& data) override;
    Common::Input::NfcState ReadMifareData(const PadIdentifier& identifier,
                                           const Common::Input::MifareRequest& request,
                                           Common::Input::MifareRequest& out_data) override;
    Common::Input::NfcState WriteMifareData(const PadIdentifier& identifier,
                                            const Common::Input::MifareRequest& request) override;

    Common::Input::DriverResult SetPollingMode(
        const PadIdentifier& identifier, const Common::Input::PollingMode polling_mode) override;

    /// Used for automapping features
    std::vector<Common::ParamPackage> GetInputDevices() const override;
    ButtonMapping GetButtonMappingForDevice(const Common::ParamPackage& params) override;
    AnalogMapping GetAnalogMappingForDevice(const Common::ParamPackage& params) override;
    MotionMapping GetMotionMappingForDevice(const Common::ParamPackage& params) override;
    Common::Input::ButtonNames GetUIName(const Common::ParamPackage& params) const override;

private:
    static constexpr std::size_t MaxSupportedControllers = 8;

    /// For shutting down, clear all data, join all threads, release usb devices
    void Reset();

    /// Registers controllers, clears all data and starts the scan thread
    void Setup();

    /// Actively searches for new devices
    void ScanThread(std::stop_token stop_token);

    /// Returns true if device is valid and not registered
    bool IsDeviceNew(SDL_hid_device_info* device_info) const;

    /// Tries to connect to the new device
    void RegisterNewDevice(SDL_hid_device_info* device_info);

    /// Returns the next free handle
    std::shared_ptr<Joycon::JoyconDriver> GetNextFreeHandle(Joycon::ControllerType type) const;

    void OnBatteryUpdate(std::size_t port, Joycon::ControllerType type, Joycon::Battery value);
    void OnColorUpdate(std::size_t port, Joycon::ControllerType type, const Joycon::Color& value);
    void OnButtonUpdate(std::size_t port, Joycon::ControllerType type, int id, bool value);
    void OnStickUpdate(std::size_t port, Joycon::ControllerType type, int id, f32 value);
    void OnMotionUpdate(std::size_t port, Joycon::ControllerType type, int id,
                        const Joycon::MotionData& value);
    void OnRingConUpdate(f32 ring_data);
    void OnAmiiboUpdate(std::size_t port, Joycon::ControllerType type,
                        const Joycon::TagInfo& amiibo_data);
    void OnCameraUpdate(std::size_t port, const std::vector<u8>& camera_data,
                        Joycon::IrsResolution format);

    /// Returns a JoyconHandle corresponding to a PadIdentifier
    std::shared_ptr<Joycon::JoyconDriver> GetHandle(PadIdentifier identifier) const;

    /// Returns a PadIdentifier corresponding to the port number and joycon type
    PadIdentifier GetIdentifier(std::size_t port, Joycon::ControllerType type) const;

    /// Returns a ParamPackage corresponding to the port number and joycon type
    Common::ParamPackage GetParamPackage(std::size_t port, Joycon::ControllerType type) const;

    std::string JoyconName(std::size_t port) const;

    Common::Input::ButtonNames GetUIButtonName(const Common::ParamPackage& params) const;

    /// Returns the name of the device in text format
    std::string JoyconName(Joycon::ControllerType type) const;

    Common::Input::NfcState TranslateDriverResult(Common::Input::DriverResult result) const;

    std::jthread scan_thread;

    // Joycon types are split by type to ease supporting dualjoycon configurations
    std::array<std::shared_ptr<Joycon::JoyconDriver>, MaxSupportedControllers> left_joycons{};
    std::array<std::shared_ptr<Joycon::JoyconDriver>, MaxSupportedControllers> right_joycons{};
    std::array<std::shared_ptr<Joycon::JoyconDriver>, MaxSupportedControllers> pro_controller{};
};

} // namespace InputCommon