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eden/src/input_common/drivers/sdl_driver.cpp
Kaydax ad2e1cc554
[externals] Update to SDL3 (#3952) 
Since the launch of the steam controller I think it's only best to push towards updating to SDL3 allowing for a wider range of controller support

I went ahead and started on getting it working. Everything here should be functional, I've personally tested it all on Arch Linux. Still untested on windows, so looking for feedback on that

Any feedback and help would be appreciated!

Main changes:
- Bump everything to SDL3
- Handle SDL3 audio and input
- Add steam controller support, including HD Rumble
- Improved battery reporting via the status icon by using real % rather than state alone

Co-authored-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3952
Reviewed-by: crueter <crueter@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
2026-05-18 19:07:41 +02:00

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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: 2018 Citra Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#include "common/logging.h"
#include "common/math_util.h"
#include "common/param_package.h"
#include "common/settings.h"
#include "common/thread.h"
#include "common/vector_math.h"
#include "input_common/drivers/sdl_driver.h"
namespace InputCommon {
namespace {
Common::UUID GetGUID(SDL_Joystick* joystick) {
const SDL_GUID guid = SDL_GetJoystickGUID(joystick);
std::array<u8, 16> data{};
std::memcpy(data.data(), guid.data, sizeof(data));
// Clear controller name crc
std::memset(data.data() + 2, 0, sizeof(u16));
return Common::UUID{data};
}
using GamepadBindings = std::vector<SDL_GamepadBinding>;
SDL_GamepadBinding EmptyBinding() {
SDL_GamepadBinding binding{};
binding.input_type = SDL_GAMEPAD_BINDTYPE_NONE;
return binding;
}
GamepadBindings GetBindings(SDL_Gamepad* controller) {
if (controller == nullptr) {
return {};
}
int binding_count = 0;
SDL_GamepadBinding** bindings = SDL_GetGamepadBindings(controller, &binding_count);
if (bindings == nullptr) {
return {};
}
GamepadBindings cached_bindings{};
cached_bindings.reserve(static_cast<std::size_t>(binding_count));
for (int i = 0; i < binding_count; ++i) {
if (const auto* current = bindings[i]) {
cached_bindings.emplace_back(*current);
}
}
SDL_free(bindings);
return cached_bindings;
}
template <typename Predicate>
SDL_GamepadBinding FindBinding(const GamepadBindings& bindings, Predicate matches) {
const auto it = std::find_if(bindings.begin(), bindings.end(), matches);
return it != bindings.end() ? *it : EmptyBinding();
}
SDL_GamepadBinding GetBindingForButton(const GamepadBindings& bindings, SDL_GamepadButton button) {
return FindBinding(bindings, [button](const SDL_GamepadBinding& current) {
return current.output_type == SDL_GAMEPAD_BINDTYPE_BUTTON &&
current.output.button == static_cast<SDL_GamepadButton>(button);
});
}
SDL_GamepadBinding GetBindingForAxis(const GamepadBindings& bindings, SDL_GamepadAxis axis) {
return FindBinding(bindings, [axis](const SDL_GamepadBinding& current) {
return current.output_type == SDL_GAMEPAD_BINDTYPE_AXIS &&
current.output.axis.axis == static_cast<SDL_GamepadAxis>(axis);
});
}
} // Anonymous namespace
static bool SDLEventWatcher(void* user_data, SDL_Event* event) {
auto* const sdl_state = static_cast<SDLDriver*>(user_data);
sdl_state->HandleGameControllerEvent(*event);
return true;
}
class SDLJoystick {
public:
SDLJoystick(Common::UUID guid_, int port_, SDL_Joystick* joystick,
SDL_Gamepad* game_controller)
: guid{guid_}, port{port_}, sdl_joystick{joystick, &SDL_CloseJoystick},
sdl_controller{game_controller, &SDL_CloseGamepad} {
EnableMotion();
}
void EnableMotion() {
if (!sdl_controller) {
return;
}
SDL_Gamepad* controller = sdl_controller.get();
if (HasMotion()) {
SDL_SetGamepadSensorEnabled(controller, SDL_SENSOR_ACCEL, false);
SDL_SetGamepadSensorEnabled(controller, SDL_SENSOR_GYRO, false);
}
has_accel = SDL_GamepadHasSensor(controller, SDL_SENSOR_ACCEL);
has_gyro = SDL_GamepadHasSensor(controller, SDL_SENSOR_GYRO);
if (has_accel) {
if (!SDL_SetGamepadSensorEnabled(controller, SDL_SENSOR_ACCEL, true)) {
LOG_WARNING(Input, "Failed to enable accelerometer sensor: {}", SDL_GetError());
}
}
if (has_gyro) {
if (!SDL_SetGamepadSensorEnabled(controller, SDL_SENSOR_GYRO, true)) {
LOG_WARNING(Input, "Failed to enable gyroscope sensor: {}", SDL_GetError());
}
}
LOG_INFO(Input, "Controller motion capabilities: accel={} gyro={}", has_accel, has_gyro);
}
bool HasMotion() const {
return has_gyro || has_accel;
}
bool UpdateMotion(SDL_GamepadSensorEvent event) {
constexpr float gravity_constant = 9.80665f;
std::scoped_lock lock{mutex};
const u64 sensor_timestamp = event.sensor_timestamp != 0 ? event.sensor_timestamp
: event.timestamp;
if (last_motion_update == 0) {
last_motion_update = sensor_timestamp;
return false;
}
if (sensor_timestamp < last_motion_update) {
return false;
}
// SDL3 reports sensor timestamps in nanoseconds, while the input stack expects
// delta timestamps in microseconds.
const u64 time_difference = (sensor_timestamp - last_motion_update) / 1000;
last_motion_update = sensor_timestamp;
switch (event.sensor) {
case SDL_SENSOR_ACCEL: {
motion.accel_x = -event.data[0] / gravity_constant;
motion.accel_y = event.data[2] / gravity_constant;
motion.accel_z = -event.data[1] / gravity_constant;
break;
}
case SDL_SENSOR_GYRO: {
motion.gyro_x = event.data[0] / (Common::PI * 2);
motion.gyro_y = -event.data[2] / (Common::PI * 2);
motion.gyro_z = event.data[1] / (Common::PI * 2);
break;
}
}
// Ignore duplicated timestamps
if (time_difference == 0) {
return false;
}
// Motion data is invalid
if (motion.accel_x == 0 && motion.gyro_x == 0 && motion.accel_y == 0 &&
motion.gyro_y == 0 && motion.accel_z == 0 && motion.gyro_z == 0) {
if (motion_error_count++ < 200) {
return false;
}
// Try restarting the sensor
motion_error_count = 0;
EnableMotion();
return false;
}
motion_error_count = 0;
motion.delta_timestamp = time_difference;
return true;
}
const BasicMotion& GetMotion() const {
return motion;
}
bool RumblePlay(const Common::Input::VibrationStatus vibration) {
constexpr u32 rumble_max_duration_ms = 2000;
constexpr f32 low_start_sensitivity_limit = 140.0f;
constexpr f32 low_width_sensitivity_limit = 400.0f;
constexpr f32 high_start_sensitivity_limit = 200.0f;
constexpr f32 high_width_sensitivity_limit = 700.0f;
// Try to provide some feeling of the frequency by reducing the amplitude depending on it.
f32 low_frequency_scale = 1.0f;
if (vibration.low_frequency > low_start_sensitivity_limit) {
low_frequency_scale =
(std::max)(1.0f - (vibration.low_frequency - low_start_sensitivity_limit) /
low_width_sensitivity_limit,
0.3f);
}
f32 low_amplitude = vibration.low_amplitude * low_frequency_scale;
f32 high_frequency_scale = 1.0f;
if (vibration.high_frequency > high_start_sensitivity_limit) {
high_frequency_scale =
(std::max)(1.0f - (vibration.high_frequency - high_start_sensitivity_limit) /
high_width_sensitivity_limit,
0.3f);
}
f32 high_amplitude = vibration.high_amplitude * high_frequency_scale;
if (sdl_controller) {
return SDL_RumbleGamepad(sdl_controller.get(), static_cast<u16>(low_amplitude),
static_cast<u16>(high_amplitude), rumble_max_duration_ms);
} else if (sdl_joystick) {
return SDL_RumbleJoystick(sdl_joystick.get(), static_cast<u16>(low_amplitude),
static_cast<u16>(high_amplitude),
rumble_max_duration_ms);
}
return false;
}
bool HasHDRumble() const {
constexpr Uint16 valve_vendor_id = 0x28DE;
const auto is_known_hd_type = [](SDL_GamepadType type) {
return type == SDL_GAMEPAD_TYPE_NINTENDO_SWITCH_PRO ||
type == SDL_GAMEPAD_TYPE_NINTENDO_SWITCH_JOYCON_LEFT ||
type == SDL_GAMEPAD_TYPE_NINTENDO_SWITCH_JOYCON_RIGHT ||
type == SDL_GAMEPAD_TYPE_PS5;
};
// Valve hardware doesn't have any enums in SDL, so we have to support it manually.
// Since they have HD rumble, we can assume that all their hardware supports it, even if we can't detect the exact type.
if (sdl_controller) {
if (is_known_hd_type(SDL_GetGamepadType(sdl_controller.get())) ||
SDL_GetGamepadVendor(sdl_controller.get()) == valve_vendor_id) {
return true;
}
}
if (sdl_joystick) {
if (SDL_GetJoystickVendor(sdl_joystick.get()) == valve_vendor_id) {
return true;
}
}
return false;
}
void EnableVibration(bool is_enabled) {
has_vibration = is_enabled;
is_vibration_tested = true;
}
bool HasVibration() const {
return has_vibration;
}
bool IsVibrationTested() const {
return is_vibration_tested;
}
/**
* The Pad identifier of the joystick
*/
const PadIdentifier GetPadIdentifier() const {
return {
.guid = guid,
.port = static_cast<std::size_t>(port),
.pad = 0,
};
}
/**
* The guid of the joystick
*/
const Common::UUID& GetGUID() const {
return guid;
}
/**
* The number of joystick from the same type that were connected before this joystick
*/
int GetPort() const {
return port;
}
SDL_Joystick* GetSDLJoystick() const {
return sdl_joystick.get();
}
SDL_Gamepad* GetSDLGameController() const {
return sdl_controller.get();
}
void SetSDLJoystick(SDL_Joystick* joystick, SDL_Gamepad* controller) {
sdl_joystick.reset(joystick);
sdl_controller.reset(controller);
}
bool IsJoyconLeft() const {
const std::string controller_name = GetControllerName();
if (std::strstr(controller_name.c_str(), "Joy-Con Left") != nullptr) {
return true;
}
if (std::strstr(controller_name.c_str(), "Joy-Con (L)") != nullptr) {
return true;
}
return false;
}
bool IsJoyconRight() const {
const std::string controller_name = GetControllerName();
if (std::strstr(controller_name.c_str(), "Joy-Con Right") != nullptr) {
return true;
}
if (std::strstr(controller_name.c_str(), "Joy-Con (R)") != nullptr) {
return true;
}
return false;
}
Common::Input::BatteryLevel GetBatteryLevel(SDL_PowerState battery_level, int percent) {
if (battery_level == SDL_POWERSTATE_CHARGING) {
return Common::Input::BatteryLevel::Charging;
}
if (percent >= 0 && percent <= 100) {
if (percent <= 5) {
return Common::Input::BatteryLevel::Empty;
}
if (percent <= 20) {
return Common::Input::BatteryLevel::Critical;
}
if (percent <= 40) {
return Common::Input::BatteryLevel::Low;
}
if (percent <= 70) {
return Common::Input::BatteryLevel::Medium;
}
return Common::Input::BatteryLevel::Full;
}
switch (battery_level) {
case SDL_POWERSTATE_ON_BATTERY:
return Common::Input::BatteryLevel::Medium;
case SDL_POWERSTATE_NO_BATTERY:
return Common::Input::BatteryLevel::None;
case SDL_POWERSTATE_CHARGED:
return Common::Input::BatteryLevel::Full;
case SDL_POWERSTATE_ERROR:
case SDL_POWERSTATE_UNKNOWN:
default:
return Common::Input::BatteryLevel::None;
}
}
std::string GetControllerName() const {
if (sdl_controller) {
switch (SDL_GetGamepadType(sdl_controller.get())) {
case SDL_GAMEPAD_TYPE_XBOX360:
return "Xbox 360 Controller";
case SDL_GAMEPAD_TYPE_XBOXONE:
return "Xbox One Controller";
case SDL_GAMEPAD_TYPE_PS3:
return "DualShock 3 Controller";
case SDL_GAMEPAD_TYPE_PS4:
return "DualShock 4 Controller";
case SDL_GAMEPAD_TYPE_PS5:
return "DualSense Controller";
default:
break;
}
const auto name = SDL_GetGamepadName(sdl_controller.get());
if (name) {
return name;
}
}
if (sdl_joystick) {
const auto name = SDL_GetJoystickName(sdl_joystick.get());
if (name) {
return name;
}
}
return "Unknown";
}
private:
Common::UUID guid;
int port;
std::unique_ptr<SDL_Joystick, decltype(&SDL_CloseJoystick)> sdl_joystick;
std::unique_ptr<SDL_Gamepad, decltype(&SDL_CloseGamepad)> sdl_controller;
mutable std::mutex mutex;
u64 last_motion_update{};
std::size_t motion_error_count{};
bool has_gyro{false};
bool has_accel{false};
bool has_vibration{false};
bool is_vibration_tested{false};
BasicMotion motion;
};
std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const Common::UUID& guid, int port) {
std::scoped_lock lock{joystick_map_mutex};
const auto it = joystick_map.find(guid);
if (it != joystick_map.end()) {
while (it->second.size() <= static_cast<std::size_t>(port)) {
auto joystick = std::make_shared<SDLJoystick>(guid, static_cast<int>(it->second.size()),
nullptr, nullptr);
it->second.emplace_back(std::move(joystick));
}
return it->second[static_cast<std::size_t>(port)];
}
auto joystick = std::make_shared<SDLJoystick>(guid, 0, nullptr, nullptr);
return joystick_map[guid].emplace_back(std::move(joystick));
}
std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGUID(const std::string& guid, int port) {
return GetSDLJoystickByGUID(Common::UUID{guid}, port);
}
std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickBySDLID(SDL_JoystickID sdl_id) {
auto sdl_joystick = SDL_GetJoystickFromID(sdl_id);
if (sdl_joystick == nullptr) {
return nullptr;
}
const auto guid = GetGUID(sdl_joystick);
std::scoped_lock lock{joystick_map_mutex};
const auto map_it = joystick_map.find(guid);
if (map_it == joystick_map.end()) {
return nullptr;
}
const auto vec_it = std::find_if(map_it->second.begin(), map_it->second.end(),
[&sdl_joystick](const auto& joystick) {
return joystick->GetSDLJoystick() == sdl_joystick;
});
if (vec_it == map_it->second.end()) {
return nullptr;
}
return *vec_it;
}
std::shared_ptr<SDLJoystick> SDLDriver::GetSDLJoystickByGamepadID(SDL_JoystickID sdl_id) {
auto* const sdl_gamepad = SDL_GetGamepadFromID(sdl_id);
if (sdl_gamepad == nullptr) {
return nullptr;
}
auto* const sdl_joystick = SDL_GetGamepadJoystick(sdl_gamepad);
if (sdl_joystick == nullptr) {
return nullptr;
}
const auto guid = GetGUID(sdl_joystick);
std::scoped_lock lock{joystick_map_mutex};
const auto map_it = joystick_map.find(guid);
if (map_it == joystick_map.end()) {
return nullptr;
}
const auto vec_it = std::find_if(map_it->second.begin(), map_it->second.end(),
[sdl_joystick, sdl_gamepad](const auto& joystick) {
return joystick->GetSDLJoystick() == sdl_joystick ||
joystick->GetSDLGameController() == sdl_gamepad;
});
if (vec_it == map_it->second.end()) {
return nullptr;
}
return *vec_it;
}
void SDLDriver::InitJoystick(SDL_JoystickID joystick_id) {
SDL_Joystick* sdl_joystick = SDL_OpenJoystick(joystick_id);
SDL_Gamepad* sdl_gamecontroller = nullptr;
int battery_percent = -1;
SDL_PowerState battery_state = SDL_POWERSTATE_UNKNOWN;
if (SDL_IsGamepad(joystick_id)) {
sdl_gamecontroller = SDL_OpenGamepad(joystick_id);
}
if (!sdl_joystick) {
LOG_ERROR(Input, "Failed to open joystick {}", joystick_id);
return;
}
battery_state = SDL_GetJoystickPowerInfo(sdl_joystick, &battery_percent);
const auto guid = GetGUID(sdl_joystick);
if (Settings::values.enable_joycon_driver) {
if (guid.uuid[5] == 0x05 && guid.uuid[4] == 0x7e &&
(guid.uuid[8] == 0x06 || guid.uuid[8] == 0x07)) {
LOG_WARNING(Input, "Preferring joycon driver for device index {}", joystick_id);
SDL_CloseJoystick(sdl_joystick);
return;
}
}
if (Settings::values.enable_procon_driver) {
if (guid.uuid[5] == 0x05 && guid.uuid[4] == 0x7e && guid.uuid[8] == 0x09) {
LOG_WARNING(Input, "Preferring joycon driver for device index {}", joystick_id);
SDL_CloseJoystick(sdl_joystick);
return;
}
}
std::scoped_lock lock{joystick_map_mutex};
if (joystick_map.find(guid) == joystick_map.end()) {
auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick, sdl_gamecontroller);
PreSetController(joystick->GetPadIdentifier());
joystick->EnableMotion();
SetBattery(joystick->GetPadIdentifier(),
joystick->GetBatteryLevel(battery_state, battery_percent));
joystick_map[guid].emplace_back(std::move(joystick));
return;
}
auto& joystick_guid_list = joystick_map[guid];
const auto joystick_it =
std::find_if(joystick_guid_list.begin(), joystick_guid_list.end(),
[](const auto& joystick) { return !joystick->GetSDLJoystick(); });
if (joystick_it != joystick_guid_list.end()) {
(*joystick_it)->SetSDLJoystick(sdl_joystick, sdl_gamecontroller);
(*joystick_it)->EnableMotion();
SetBattery((*joystick_it)->GetPadIdentifier(),
(*joystick_it)->GetBatteryLevel(battery_state, battery_percent));
return;
}
const int port = static_cast<int>(joystick_guid_list.size());
auto joystick = std::make_shared<SDLJoystick>(guid, port, sdl_joystick, sdl_gamecontroller);
PreSetController(joystick->GetPadIdentifier());
joystick->EnableMotion();
SetBattery(joystick->GetPadIdentifier(),
joystick->GetBatteryLevel(battery_state, battery_percent));
joystick_guid_list.emplace_back(std::move(joystick));
}
void SDLDriver::CloseJoystick(SDL_Joystick* sdl_joystick) {
const auto guid = GetGUID(sdl_joystick);
std::scoped_lock lock{joystick_map_mutex};
// This call to guid is safe since the joystick is guaranteed to be in the map
const auto& joystick_guid_list = joystick_map[guid];
const auto joystick_it = std::find_if(joystick_guid_list.begin(), joystick_guid_list.end(),
[&sdl_joystick](const auto& joystick) {
return joystick->GetSDLJoystick() == sdl_joystick;
});
if (joystick_it != joystick_guid_list.end()) {
(*joystick_it)->SetSDLJoystick(nullptr, nullptr);
}
}
void SDLDriver::PumpEvents() const {
if (initialized) {
SDL_PumpEvents();
}
}
void SDLDriver::HandleGameControllerEvent(const SDL_Event& event) {
switch (event.type) {
case SDL_EVENT_JOYSTICK_BUTTON_UP: {
if (const auto joystick = GetSDLJoystickBySDLID(event.jbutton.which)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetButton(identifier, event.jbutton.button, false);
}
break;
}
case SDL_EVENT_JOYSTICK_BUTTON_DOWN: {
if (const auto joystick = GetSDLJoystickBySDLID(event.jbutton.which)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetButton(identifier, event.jbutton.button, true);
}
break;
}
case SDL_EVENT_JOYSTICK_HAT_MOTION: {
if (const auto joystick = GetSDLJoystickBySDLID(event.jhat.which)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetHatButton(identifier, event.jhat.hat, event.jhat.value);
}
break;
}
case SDL_EVENT_JOYSTICK_AXIS_MOTION: {
if (const auto joystick = GetSDLJoystickBySDLID(event.jaxis.which)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetAxis(identifier, event.jaxis.axis, event.jaxis.value / 32767.0f);
}
break;
}
case SDL_EVENT_GAMEPAD_SENSOR_UPDATE: {
auto joystick = GetSDLJoystickByGamepadID(event.gsensor.which);
if (!joystick) {
joystick = GetSDLJoystickBySDLID(event.gsensor.which);
}
if (joystick) {
if (joystick->UpdateMotion(event.gsensor)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetMotion(identifier, 0, joystick->GetMotion());
}
}
break;
}
case SDL_EVENT_JOYSTICK_BATTERY_UPDATED: {
if (auto joystick = GetSDLJoystickBySDLID(event.jbattery.which)) {
const PadIdentifier identifier = joystick->GetPadIdentifier();
SetBattery(identifier,
joystick->GetBatteryLevel(event.jbattery.state, event.jbattery.percent));
}
break;
}
case SDL_EVENT_JOYSTICK_REMOVED:
LOG_DEBUG(Input, "Controller removed with Instance_ID {}", event.jdevice.which);
CloseJoystick(SDL_GetJoystickFromID(event.jdevice.which));
break;
case SDL_EVENT_JOYSTICK_ADDED:
LOG_DEBUG(Input, "Controller connected with device index {}", event.jdevice.which);
InitJoystick(event.jdevice.which);
break;
}
}
void SDLDriver::CloseJoysticks() {
std::scoped_lock lock{joystick_map_mutex};
joystick_map.clear();
}
SDLDriver::SDLDriver(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
// Set our application name. Currently passed to DBus by SDL and visible to the user through
// their desktop environment.
SDL_SetHint(SDL_HINT_APP_NAME, "Eden");
// Disable raw input. When enabled this setting causes SDL to die when a web applet opens
SDL_SetHint(SDL_HINT_JOYSTICK_RAWINPUT, Settings::values.enable_raw_input ? "1" : "0");
// SDL3 defaults Steam Controller Bluetooth HIDAPI support to off, which can disable gyro.
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_STEAM, "1");
SDL_SetHint(SDL_HINT_GAMECONTROLLER_SENSOR_FUSION, "1");
SDL_SetHint(SDL_HINT_AUTO_UPDATE_SENSORS, "1");
// Enable HIDAPI rumble. This prevents SDL from disabling motion on PS4 and PS5 controllers
SDL_SetHint(SDL_HINT_JOYSTICK_ENHANCED_REPORTS, "1");
SDL_SetHint(SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS, "1");
// Disable hidapi drivers for joycon controllers when the custom joycon driver is enabled
if (Settings::values.enable_joycon_driver) {
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_JOY_CONS, "0");
} else {
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_JOY_CONS, "1");
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_JOYCON_HOME_LED, "0");
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_COMBINE_JOY_CONS, "0");
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_VERTICAL_JOY_CONS, "1");
}
// Disable hidapi drivers for pro controllers when the custom joycon driver is enabled
if (Settings::values.enable_procon_driver) {
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_SWITCH, "0");
} else {
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_SWITCH, "1");
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_SWITCH_HOME_LED, "0");
}
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED, "1");
// Disable hidapi driver for xbox. Already default on Windows, this causes conflict with native
// driver on Linux.
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_XBOX, "0");
// If the frontend is going to manage the event loop, then we don't start one here
start_thread = SDL_WasInit(SDL_INIT_JOYSTICK | SDL_INIT_GAMEPAD) == 0;
if (start_thread && !SDL_Init(SDL_INIT_JOYSTICK | SDL_INIT_GAMEPAD)) {
LOG_CRITICAL(Input, "SDL_Init failed with: {}", SDL_GetError());
return;
}
SDL_AddEventWatch(&SDLEventWatcher, this);
initialized = true;
if (start_thread) {
vibration_thread = std::thread([this] {
Common::SetCurrentThreadName("SDL_Vibration");
using namespace std::chrono_literals;
while (initialized) {
SendVibrations();
std::this_thread::sleep_for(250ms); // 4 TPS
}
});
}
// Because the events for joystick connection happens before we have our event watcher added, we
// can just open all the joysticks right here
int joystick_count = 0;
SDL_JoystickID* joysticks = SDL_GetJoysticks(&joystick_count);
if (joysticks != nullptr) {
for (int i = 0; i < joystick_count; ++i) {
InitJoystick(joysticks[i]);
}
SDL_free(joysticks);
}
}
SDLDriver::~SDLDriver() {
CloseJoysticks();
SDL_RemoveEventWatch(&SDLEventWatcher, this);
initialized = false;
if (start_thread) {
vibration_thread.join();
SDL_QuitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_GAMEPAD);
}
}
std::vector<Common::ParamPackage> SDLDriver::GetInputDevices() const {
std::vector<Common::ParamPackage> devices;
ankerl::unordered_dense::map<int, std::shared_ptr<SDLJoystick>> joycon_pairs;
for (const auto& [key, value] : joystick_map) {
for (const auto& joystick : value) {
if (!joystick->GetSDLJoystick()) {
continue;
}
const std::string name =
fmt::format("{} {}", joystick->GetControllerName(), joystick->GetPort());
devices.emplace_back(Common::ParamPackage{
{"engine", GetEngineName()},
{"display", std::move(name)},
{"guid", joystick->GetGUID().RawString()},
{"port", std::to_string(joystick->GetPort())},
});
if (joystick->IsJoyconLeft()) {
joycon_pairs.insert_or_assign(joystick->GetPort(), joystick);
}
}
}
// Add dual controllers
for (const auto& [key, value] : joystick_map) {
for (const auto& joystick : value) {
if (joystick->IsJoyconRight()) {
if (!joycon_pairs.contains(joystick->GetPort())) {
continue;
}
const auto joystick2 = joycon_pairs.at(joystick->GetPort());
const std::string name =
fmt::format("{} {}", "Nintendo Dual Joy-Con", joystick->GetPort());
devices.emplace_back(Common::ParamPackage{
{"engine", GetEngineName()},
{"display", std::move(name)},
{"guid", joystick->GetGUID().RawString()},
{"guid2", joystick2->GetGUID().RawString()},
{"port", std::to_string(joystick->GetPort())},
});
}
}
}
return devices;
}
Common::Input::DriverResult SDLDriver::SetVibration(
const PadIdentifier& identifier, const Common::Input::VibrationStatus& vibration) {
const auto joystick =
GetSDLJoystickByGUID(identifier.guid.RawString(), static_cast<int>(identifier.port));
const auto process_amplitude_exp = [](f32 amplitude, f32 factor) {
return (amplitude + std::pow(amplitude, factor)) * 0.5f * 0xFFFF;
};
// Default exponential curve for rumble
f32 factor = 0.35f;
// If vibration is set as a linear output use a flatter value
if (vibration.type == Common::Input::VibrationAmplificationType::Linear) {
factor = 0.5f;
}
// Amplitude for HD rumble needs no modification
if (joystick->HasHDRumble()) {
factor = 1.0f;
}
const Common::Input::VibrationStatus new_vibration{
.low_amplitude = process_amplitude_exp(vibration.low_amplitude, factor),
.low_frequency = vibration.low_frequency,
.high_amplitude = process_amplitude_exp(vibration.high_amplitude, factor),
.high_frequency = vibration.high_frequency,
.type = Common::Input::VibrationAmplificationType::Exponential,
};
vibration_queue.Push(VibrationRequest{
.identifier = identifier,
.vibration = new_vibration,
});
return Common::Input::DriverResult::Success;
}
bool SDLDriver::IsVibrationEnabled(const PadIdentifier& identifier) {
const auto joystick =
GetSDLJoystickByGUID(identifier.guid.RawString(), static_cast<int>(identifier.port));
static constexpr Common::Input::VibrationStatus test_vibration{
.low_amplitude = 1,
.low_frequency = 160.0f,
.high_amplitude = 1,
.high_frequency = 320.0f,
.type = Common::Input::VibrationAmplificationType::Exponential,
};
static constexpr Common::Input::VibrationStatus zero_vibration{
.low_amplitude = 0,
.low_frequency = 160.0f,
.high_amplitude = 0,
.high_frequency = 320.0f,
.type = Common::Input::VibrationAmplificationType::Exponential,
};
if (joystick->IsVibrationTested()) {
return joystick->HasVibration();
}
// First vibration might fail
joystick->RumblePlay(test_vibration);
// Wait for about 15ms to ensure the controller is ready for the stop command
std::this_thread::sleep_for(std::chrono::milliseconds(15));
if (!joystick->RumblePlay(zero_vibration)) {
joystick->EnableVibration(false);
return false;
}
joystick->EnableVibration(true);
return true;
}
void SDLDriver::SendVibrations() {
std::vector<VibrationRequest> filtered_vibrations{};
while (!vibration_queue.Empty()) {
VibrationRequest request;
vibration_queue.Pop(request);
const auto joystick = GetSDLJoystickByGUID(request.identifier.guid.RawString(),
static_cast<int>(request.identifier.port));
const auto it = std::find_if(filtered_vibrations.begin(), filtered_vibrations.end(),
[request](VibrationRequest vibration) {
return vibration.identifier == request.identifier;
});
if (it == filtered_vibrations.end()) {
filtered_vibrations.push_back(std::move(request));
continue;
}
*it = request;
}
for (const auto& vibration : filtered_vibrations) {
const auto joystick = GetSDLJoystickByGUID(vibration.identifier.guid.RawString(),
static_cast<int>(vibration.identifier.port));
joystick->RumblePlay(vibration.vibration);
}
}
Common::ParamPackage SDLDriver::BuildAnalogParamPackageForButton(int port, const Common::UUID& guid,
s32 axis, float value) const {
Common::ParamPackage params{};
params.Set("engine", GetEngineName());
params.Set("port", port);
params.Set("guid", guid.RawString());
params.Set("axis", axis);
params.Set("threshold", "0.5");
params.Set("invert", value < 0 ? "-" : "+");
return params;
}
Common::ParamPackage SDLDriver::BuildButtonParamPackageForButton(int port, const Common::UUID& guid,
s32 button) const {
Common::ParamPackage params{};
params.Set("engine", GetEngineName());
params.Set("port", port);
params.Set("guid", guid.RawString());
params.Set("button", button);
return params;
}
Common::ParamPackage SDLDriver::BuildHatParamPackageForButton(int port, const Common::UUID& guid,
s32 hat, u8 value) const {
Common::ParamPackage params{};
params.Set("engine", GetEngineName());
params.Set("port", port);
params.Set("guid", guid.RawString());
params.Set("hat", hat);
params.Set("direction", GetHatButtonName(value));
return params;
}
Common::ParamPackage SDLDriver::BuildMotionParam(int port, const Common::UUID& guid) const {
Common::ParamPackage params{};
params.Set("engine", GetEngineName());
params.Set("motion", 0);
params.Set("port", port);
params.Set("guid", guid.RawString());
return params;
}
Common::ParamPackage SDLDriver::BuildParamPackageForBinding(
int port, const Common::UUID& guid, const SDL_GamepadBinding& binding) const {
switch (binding.input_type) {
case SDL_GAMEPAD_BINDTYPE_NONE:
break;
case SDL_GAMEPAD_BINDTYPE_AXIS:
return BuildAnalogParamPackageForButton(port, guid, binding.input.axis.axis);
case SDL_GAMEPAD_BINDTYPE_BUTTON:
return BuildButtonParamPackageForButton(port, guid, binding.input.button);
case SDL_GAMEPAD_BINDTYPE_HAT:
return BuildHatParamPackageForButton(port, guid, binding.input.hat.hat,
static_cast<u8>(binding.input.hat.hat_mask));
}
return {};
}
Common::ParamPackage SDLDriver::BuildParamPackageForAnalog(PadIdentifier identifier, int axis_x,
int axis_y, float offset_x,
float offset_y) const {
Common::ParamPackage params;
params.Set("engine", GetEngineName());
params.Set("port", static_cast<int>(identifier.port));
params.Set("guid", identifier.guid.RawString());
params.Set("axis_x", axis_x);
params.Set("axis_y", axis_y);
params.Set("offset_x", offset_x);
params.Set("offset_y", offset_y);
params.Set("invert_x", "+");
params.Set("invert_y", "+");
return params;
}
ButtonMapping SDLDriver::GetButtonMappingForDevice(const Common::ParamPackage& params) {
if (!params.Has("guid") || !params.Has("port")) {
return {};
}
const auto joystick = GetSDLJoystickByGUID(params.Get("guid", ""), params.Get("port", 0));
auto* controller = joystick->GetSDLGameController();
if (controller == nullptr) {
return {};
}
// This list is missing ZL/ZR since those are not considered buttons in SDL GameController.
// We will add those afterwards
ButtonBindings switch_to_sdl_button;
switch_to_sdl_button = GetDefaultButtonBinding(joystick);
// Add the missing bindings for ZL/ZR
static constexpr ZButtonBindings switch_to_sdl_axis{{
{Settings::NativeButton::ZL, SDL_GAMEPAD_AXIS_LEFT_TRIGGER},
{Settings::NativeButton::ZR, SDL_GAMEPAD_AXIS_RIGHT_TRIGGER},
}};
// Parameters contain two joysticks return dual
if (params.Has("guid2")) {
const auto joystick2 = GetSDLJoystickByGUID(params.Get("guid2", ""), params.Get("port", 0));
if (joystick2->GetSDLGameController() != nullptr) {
return GetDualControllerMapping(joystick, joystick2, switch_to_sdl_button,
switch_to_sdl_axis);
}
}
return GetSingleControllerMapping(joystick, switch_to_sdl_button, switch_to_sdl_axis);
}
ButtonBindings SDLDriver::GetDefaultButtonBinding(
const std::shared_ptr<SDLJoystick>& joystick) const {
// Default SL/SR mapping for other controllers
auto sll_button = SDL_GAMEPAD_BUTTON_LEFT_SHOULDER;
auto srl_button = SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER;
auto slr_button = SDL_GAMEPAD_BUTTON_LEFT_SHOULDER;
auto srr_button = SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER;
if (joystick->IsJoyconLeft()) {
sll_button = SDL_GAMEPAD_BUTTON_LEFT_PADDLE1;
srl_button = SDL_GAMEPAD_BUTTON_LEFT_PADDLE2;
}
if (joystick->IsJoyconRight()) {
slr_button = SDL_GAMEPAD_BUTTON_RIGHT_PADDLE2;
srr_button = SDL_GAMEPAD_BUTTON_RIGHT_PADDLE1;
}
return {
std::pair{Settings::NativeButton::A, SDL_GAMEPAD_BUTTON_EAST},
{Settings::NativeButton::B, SDL_GAMEPAD_BUTTON_SOUTH},
{Settings::NativeButton::X, SDL_GAMEPAD_BUTTON_NORTH},
{Settings::NativeButton::Y, SDL_GAMEPAD_BUTTON_WEST},
{Settings::NativeButton::LStick, SDL_GAMEPAD_BUTTON_LEFT_STICK},
{Settings::NativeButton::RStick, SDL_GAMEPAD_BUTTON_RIGHT_STICK},
{Settings::NativeButton::L, SDL_GAMEPAD_BUTTON_LEFT_SHOULDER},
{Settings::NativeButton::R, SDL_GAMEPAD_BUTTON_RIGHT_SHOULDER},
{Settings::NativeButton::Plus, SDL_GAMEPAD_BUTTON_START},
{Settings::NativeButton::Minus, SDL_GAMEPAD_BUTTON_BACK},
{Settings::NativeButton::DLeft, SDL_GAMEPAD_BUTTON_DPAD_LEFT},
{Settings::NativeButton::DUp, SDL_GAMEPAD_BUTTON_DPAD_UP},
{Settings::NativeButton::DRight, SDL_GAMEPAD_BUTTON_DPAD_RIGHT},
{Settings::NativeButton::DDown, SDL_GAMEPAD_BUTTON_DPAD_DOWN},
{Settings::NativeButton::SLLeft, sll_button},
{Settings::NativeButton::SRLeft, srl_button},
{Settings::NativeButton::SLRight, slr_button},
{Settings::NativeButton::SRRight, srr_button},
{Settings::NativeButton::Home, SDL_GAMEPAD_BUTTON_GUIDE},
{Settings::NativeButton::Screenshot, SDL_GAMEPAD_BUTTON_MISC1},
};
}
ButtonMapping SDLDriver::GetSingleControllerMapping(
const std::shared_ptr<SDLJoystick>& joystick, const ButtonBindings& switch_to_sdl_button,
const ZButtonBindings& switch_to_sdl_axis) const {
ButtonMapping mapping;
mapping.reserve(switch_to_sdl_button.size() + switch_to_sdl_axis.size());
auto* controller = joystick->GetSDLGameController();
const auto bindings = GetBindings(controller);
for (const auto& [switch_button, sdl_button] : switch_to_sdl_button) {
const auto binding = GetBindingForButton(bindings, sdl_button);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick->GetPort(), joystick->GetGUID(), binding));
}
for (const auto& [switch_button, sdl_axis] : switch_to_sdl_axis) {
const auto binding = GetBindingForAxis(bindings, sdl_axis);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick->GetPort(), joystick->GetGUID(), binding));
}
return mapping;
}
ButtonMapping SDLDriver::GetDualControllerMapping(const std::shared_ptr<SDLJoystick>& joystick,
const std::shared_ptr<SDLJoystick>& joystick2,
const ButtonBindings& switch_to_sdl_button,
const ZButtonBindings& switch_to_sdl_axis) const {
ButtonMapping mapping;
mapping.reserve(switch_to_sdl_button.size() + switch_to_sdl_axis.size());
auto* controller = joystick->GetSDLGameController();
auto* controller2 = joystick2->GetSDLGameController();
const auto bindings = GetBindings(controller);
const auto bindings2 = GetBindings(controller2);
for (const auto& [switch_button, sdl_button] : switch_to_sdl_button) {
if (IsButtonOnLeftSide(switch_button)) {
const auto binding = GetBindingForButton(bindings2, sdl_button);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick2->GetPort(), joystick2->GetGUID(), binding));
continue;
}
const auto binding = GetBindingForButton(bindings, sdl_button);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick->GetPort(), joystick->GetGUID(), binding));
}
for (const auto& [switch_button, sdl_axis] : switch_to_sdl_axis) {
if (IsButtonOnLeftSide(switch_button)) {
const auto binding = GetBindingForAxis(bindings2, sdl_axis);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick2->GetPort(), joystick2->GetGUID(), binding));
continue;
}
const auto binding = GetBindingForAxis(bindings, sdl_axis);
mapping.insert_or_assign(
switch_button,
BuildParamPackageForBinding(joystick->GetPort(), joystick->GetGUID(), binding));
}
return mapping;
}
bool SDLDriver::IsButtonOnLeftSide(Settings::NativeButton::Values button) const {
switch (button) {
case Settings::NativeButton::DDown:
case Settings::NativeButton::DLeft:
case Settings::NativeButton::DRight:
case Settings::NativeButton::DUp:
case Settings::NativeButton::L:
case Settings::NativeButton::LStick:
case Settings::NativeButton::Minus:
case Settings::NativeButton::Screenshot:
case Settings::NativeButton::ZL:
return true;
default:
return false;
}
}
AnalogMapping SDLDriver::GetAnalogMappingForDevice(const Common::ParamPackage& params) {
if (!params.Has("guid") || !params.Has("port")) {
return {};
}
const auto joystick = GetSDLJoystickByGUID(params.Get("guid", ""), params.Get("port", 0));
const auto joystick2 = GetSDLJoystickByGUID(params.Get("guid2", ""), params.Get("port", 0));
auto* controller = joystick->GetSDLGameController();
if (controller == nullptr) {
return {};
}
AnalogMapping mapping = {};
const auto bindings = GetBindings(controller);
const auto binding_left_x = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_LEFTX);
const auto binding_left_y = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_LEFTY);
if (params.Has("guid2")) {
const auto identifier = joystick2->GetPadIdentifier();
PreSetController(identifier);
PreSetAxis(identifier, binding_left_x.input.axis.axis);
PreSetAxis(identifier, binding_left_y.input.axis.axis);
const auto left_offset_x = -GetAxis(identifier, binding_left_x.input.axis.axis);
const auto left_offset_y = GetAxis(identifier, binding_left_y.input.axis.axis);
mapping.insert_or_assign(Settings::NativeAnalog::LStick,
BuildParamPackageForAnalog(identifier, binding_left_x.input.axis.axis,
binding_left_y.input.axis.axis,
left_offset_x, left_offset_y));
} else {
const auto identifier = joystick->GetPadIdentifier();
PreSetController(identifier);
PreSetAxis(identifier, binding_left_x.input.axis.axis);
PreSetAxis(identifier, binding_left_y.input.axis.axis);
const auto left_offset_x = -GetAxis(identifier, binding_left_x.input.axis.axis);
const auto left_offset_y = GetAxis(identifier, binding_left_y.input.axis.axis);
mapping.insert_or_assign(Settings::NativeAnalog::LStick,
BuildParamPackageForAnalog(identifier, binding_left_x.input.axis.axis,
binding_left_y.input.axis.axis,
left_offset_x, left_offset_y));
}
const auto binding_right_x = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_RIGHTX);
const auto binding_right_y = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_RIGHTY);
const auto identifier = joystick->GetPadIdentifier();
PreSetController(identifier);
PreSetAxis(identifier, binding_right_x.input.axis.axis);
PreSetAxis(identifier, binding_right_y.input.axis.axis);
const auto right_offset_x = -GetAxis(identifier, binding_right_x.input.axis.axis);
const auto right_offset_y = GetAxis(identifier, binding_right_y.input.axis.axis);
mapping.insert_or_assign(Settings::NativeAnalog::RStick,
BuildParamPackageForAnalog(identifier, binding_right_x.input.axis.axis,
binding_right_y.input.axis.axis, right_offset_x,
right_offset_y));
return mapping;
}
MotionMapping SDLDriver::GetMotionMappingForDevice(const Common::ParamPackage& params) {
if (!params.Has("guid") || !params.Has("port")) {
return {};
}
const auto joystick = GetSDLJoystickByGUID(params.Get("guid", ""), params.Get("port", 0));
const auto joystick2 = GetSDLJoystickByGUID(params.Get("guid2", ""), params.Get("port", 0));
auto* controller = joystick->GetSDLGameController();
if (controller == nullptr) {
return {};
}
MotionMapping mapping = {};
joystick->EnableMotion();
if (joystick->HasMotion()) {
mapping.insert_or_assign(Settings::NativeMotion::MotionRight,
BuildMotionParam(joystick->GetPort(), joystick->GetGUID()));
}
if (params.Has("guid2")) {
joystick2->EnableMotion();
if (joystick2->HasMotion()) {
mapping.insert_or_assign(Settings::NativeMotion::MotionLeft,
BuildMotionParam(joystick2->GetPort(), joystick2->GetGUID()));
}
} else {
if (joystick->HasMotion()) {
mapping.insert_or_assign(Settings::NativeMotion::MotionLeft,
BuildMotionParam(joystick->GetPort(), joystick->GetGUID()));
}
}
return mapping;
}
Common::Input::ButtonNames SDLDriver::GetUIName(const Common::ParamPackage& params) const {
if (params.Has("button")) {
// TODO(German77): Find how to substitute the values for real button names
return Common::Input::ButtonNames::Value;
}
if (params.Has("hat")) {
return Common::Input::ButtonNames::Value;
}
if (params.Has("axis")) {
return Common::Input::ButtonNames::Value;
}
if (params.Has("axis_x") && params.Has("axis_y") && params.Has("axis_z")) {
return Common::Input::ButtonNames::Value;
}
if (params.Has("motion")) {
return Common::Input::ButtonNames::Engine;
}
return Common::Input::ButtonNames::Invalid;
}
std::string SDLDriver::GetHatButtonName(u8 direction_value) const {
switch (direction_value) {
case SDL_HAT_UP:
return "up";
case SDL_HAT_DOWN:
return "down";
case SDL_HAT_LEFT:
return "left";
case SDL_HAT_RIGHT:
return "right";
default:
return {};
}
}
u8 SDLDriver::GetHatButtonId(const std::string& direction_name) const {
Uint8 direction;
if (direction_name == "up") {
direction = SDL_HAT_UP;
} else if (direction_name == "down") {
direction = SDL_HAT_DOWN;
} else if (direction_name == "left") {
direction = SDL_HAT_LEFT;
} else if (direction_name == "right") {
direction = SDL_HAT_RIGHT;
} else {
direction = 0;
}
return direction;
}
bool SDLDriver::IsStickInverted(const Common::ParamPackage& params) {
if (!params.Has("guid") || !params.Has("port")) {
return false;
}
const auto joystick = GetSDLJoystickByGUID(params.Get("guid", ""), params.Get("port", 0));
if (joystick == nullptr) {
return false;
}
auto* controller = joystick->GetSDLGameController();
if (controller == nullptr) {
return false;
}
const auto& axis_x = params.Get("axis_x", 0);
const auto& axis_y = params.Get("axis_y", 0);
const auto bindings = GetBindings(controller);
const auto binding_left_x = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_LEFTX);
const auto binding_right_x = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_RIGHTX);
const auto binding_left_y = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_LEFTY);
const auto binding_right_y = GetBindingForAxis(bindings, SDL_GAMEPAD_AXIS_RIGHTY);
if (axis_x != binding_left_y.input.axis.axis && axis_x != binding_right_y.input.axis.axis) {
return false;
}
if (axis_y != binding_left_x.input.axis.axis && axis_y != binding_right_x.input.axis.axis) {
return false;
}
return true;
}
} // namespace InputCommon
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