118 lines
4.8 KiB
C++
118 lines
4.8 KiB
C++
// Copyright 2018 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 <atomic>
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#include <mutex>
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#include <thread>
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#include <unordered_map>
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#include <SDL.h>
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#include "common/common_types.h"
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#include "input_common/input_engine.h"
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union SDL_Event;
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using SDL_GameController = struct _SDL_GameController;
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using SDL_Joystick = struct _SDL_Joystick;
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using SDL_JoystickID = s32;
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using ButtonBindings =
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std::array<std::pair<Settings::NativeButton::Values, SDL_GameControllerButton>, 17>;
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using ZButtonBindings =
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std::array<std::pair<Settings::NativeButton::Values, SDL_GameControllerAxis>, 2>;
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namespace InputCommon {
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class SDLJoystick;
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class SDLDriver : public InputCommon::InputEngine {
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public:
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/// Initializes and registers SDL device factories
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SDLDriver(const std::string& input_engine_);
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/// Unregisters SDL device factories and shut them down.
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~SDLDriver() override;
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/// Handle SDL_Events for joysticks from SDL_PollEvent
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void HandleGameControllerEvent(const SDL_Event& event);
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/// Get the nth joystick with the corresponding GUID
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std::shared_ptr<SDLJoystick> GetSDLJoystickBySDLID(SDL_JoystickID sdl_id);
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/**
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* Check how many identical joysticks (by guid) were connected before the one with sdl_id and so
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* tie it to a SDLJoystick with the same guid and that port
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*/
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std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const std::string& guid, int port);
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std::vector<Common::ParamPackage> GetInputDevices() const override;
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ButtonMapping GetButtonMappingForDevice(const Common::ParamPackage& params) override;
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AnalogMapping GetAnalogMappingForDevice(const Common::ParamPackage& params) override;
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MotionMapping GetMotionMappingForDevice(const Common::ParamPackage& params) override;
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std::string GetUIName(const Common::ParamPackage& params) const override;
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std::string GetHatButtonName(u8 direction_value) const override;
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u8 GetHatButtonId(const std::string direction_name) const override;
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Common::Input::VibrationError SetRumble(
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const PadIdentifier& identifier, const Common::Input::VibrationStatus vibration) override;
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private:
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void InitJoystick(int joystick_index);
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void CloseJoystick(SDL_Joystick* sdl_joystick);
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/// Needs to be called before SDL_QuitSubSystem.
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void CloseJoysticks();
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Common::ParamPackage BuildAnalogParamPackageForButton(int port, std::string guid, s32 axis,
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float value = 0.1f) const;
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Common::ParamPackage BuildButtonParamPackageForButton(int port, std::string guid,
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s32 button) const;
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Common::ParamPackage BuildHatParamPackageForButton(int port, std::string guid, s32 hat,
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u8 value) const;
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Common::ParamPackage BuildMotionParam(int port, std::string guid) const;
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Common::ParamPackage BuildParamPackageForBinding(
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int port, const std::string& guid, const SDL_GameControllerButtonBind& binding) const;
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Common::ParamPackage BuildParamPackageForAnalog(PadIdentifier identifier, int axis_x,
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int axis_y, float offset_x,
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float offset_y) const;
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/// Returns the default button bindings list for generic controllers
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ButtonBindings GetDefaultButtonBinding() const;
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/// Returns the default button bindings list for nintendo controllers
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ButtonBindings GetNintendoButtonBinding(const std::shared_ptr<SDLJoystick>& joystick) const;
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/// Returns the button mappings from a single controller
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ButtonMapping GetSingleControllerMapping(const std::shared_ptr<SDLJoystick>& joystick,
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const ButtonBindings& switch_to_sdl_button,
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const ZButtonBindings& switch_to_sdl_axis) const;
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/// Returns the button mappings from two different controllers
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ButtonMapping GetDualControllerMapping(const std::shared_ptr<SDLJoystick>& joystick,
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const std::shared_ptr<SDLJoystick>& joystick2,
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const ButtonBindings& switch_to_sdl_button,
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const ZButtonBindings& switch_to_sdl_axis) const;
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/// Returns true if the button is on the left joycon
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bool IsButtonOnLeftSide(Settings::NativeButton::Values button) const;
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/// Map of GUID of a list of corresponding virtual Joysticks
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std::unordered_map<std::string, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map;
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std::mutex joystick_map_mutex;
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bool start_thread = false;
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std::atomic<bool> initialized = false;
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std::thread poll_thread;
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};
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} // namespace InputCommon
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