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Duckstation/src/util/sdl_input_source.cpp

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// SPDX-FileCopyrightText: 2019-2023 Connor McLaughlin <stenzek@gmail.com>
// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
#include "sdl_input_source.h"
#include "input_manager.h"
#include "core/host.h"
#include "core/settings.h"
#include "common/assert.h"
#include "common/bitutils.h"
#include "common/file_system.h"
#include "common/log.h"
#include "common/path.h"
#include "common/string_util.h"
#include "IconsPromptFont.h"
#include <cmath>
#ifdef __APPLE__
#include <dispatch/dispatch.h>
#endif
Log_SetChannel(SDLInputSource);
static constexpr const char* CONTROLLER_DB_FILENAME = "gamecontrollerdb.txt";
static constexpr const char* s_sdl_axis_names[] = {
"LeftX", // SDL_CONTROLLER_AXIS_LEFTX
"LeftY", // SDL_CONTROLLER_AXIS_LEFTY
"RightX", // SDL_CONTROLLER_AXIS_RIGHTX
"RightY", // SDL_CONTROLLER_AXIS_RIGHTY
"LeftTrigger", // SDL_CONTROLLER_AXIS_TRIGGERLEFT
"RightTrigger", // SDL_CONTROLLER_AXIS_TRIGGERRIGHT
};
static constexpr const char* s_sdl_axis_icons[][2] = {
{ICON_PF_LEFT_ANALOG_LEFT, ICON_PF_LEFT_ANALOG_RIGHT}, // SDL_CONTROLLER_AXIS_LEFTX
{ICON_PF_LEFT_ANALOG_UP, ICON_PF_LEFT_ANALOG_DOWN}, // SDL_CONTROLLER_AXIS_LEFTY
{ICON_PF_RIGHT_ANALOG_LEFT, ICON_PF_RIGHT_ANALOG_RIGHT}, // SDL_CONTROLLER_AXIS_RIGHTX
{ICON_PF_RIGHT_ANALOG_UP, ICON_PF_RIGHT_ANALOG_DOWN}, // SDL_CONTROLLER_AXIS_RIGHTY
{nullptr, ICON_PF_LEFT_TRIGGER_PULL}, // SDL_CONTROLLER_AXIS_TRIGGERLEFT
{nullptr, ICON_PF_RIGHT_TRIGGER_PULL}, // SDL_CONTROLLER_AXIS_TRIGGERRIGHT
};
static constexpr const GenericInputBinding s_sdl_generic_binding_axis_mapping[][2] = {
{GenericInputBinding::LeftStickLeft, GenericInputBinding::LeftStickRight}, // SDL_CONTROLLER_AXIS_LEFTX
{GenericInputBinding::LeftStickUp, GenericInputBinding::LeftStickDown}, // SDL_CONTROLLER_AXIS_LEFTY
{GenericInputBinding::RightStickLeft, GenericInputBinding::RightStickRight}, // SDL_CONTROLLER_AXIS_RIGHTX
{GenericInputBinding::RightStickUp, GenericInputBinding::RightStickDown}, // SDL_CONTROLLER_AXIS_RIGHTY
{GenericInputBinding::Unknown, GenericInputBinding::L2}, // SDL_CONTROLLER_AXIS_TRIGGERLEFT
{GenericInputBinding::Unknown, GenericInputBinding::R2}, // SDL_CONTROLLER_AXIS_TRIGGERRIGHT
};
static constexpr const char* s_sdl_button_names[] = {
"A", // SDL_CONTROLLER_BUTTON_A
"B", // SDL_CONTROLLER_BUTTON_B
"X", // SDL_CONTROLLER_BUTTON_X
"Y", // SDL_CONTROLLER_BUTTON_Y
"Back", // SDL_CONTROLLER_BUTTON_BACK
"Guide", // SDL_CONTROLLER_BUTTON_GUIDE
"Start", // SDL_CONTROLLER_BUTTON_START
"LeftStick", // SDL_CONTROLLER_BUTTON_LEFTSTICK
"RightStick", // SDL_CONTROLLER_BUTTON_RIGHTSTICK
"LeftShoulder", // SDL_CONTROLLER_BUTTON_LEFTSHOULDER
"RightShoulder", // SDL_CONTROLLER_BUTTON_RIGHTSHOULDER
"DPadUp", // SDL_CONTROLLER_BUTTON_DPAD_UP
"DPadDown", // SDL_CONTROLLER_BUTTON_DPAD_DOWN
"DPadLeft", // SDL_CONTROLLER_BUTTON_DPAD_LEFT
"DPadRight", // SDL_CONTROLLER_BUTTON_DPAD_RIGHT
"Misc1", // SDL_CONTROLLER_BUTTON_MISC1
"Paddle1", // SDL_CONTROLLER_BUTTON_PADDLE1
"Paddle2", // SDL_CONTROLLER_BUTTON_PADDLE2
"Paddle3", // SDL_CONTROLLER_BUTTON_PADDLE3
"Paddle4", // SDL_CONTROLLER_BUTTON_PADDLE4
"Touchpad", // SDL_CONTROLLER_BUTTON_TOUCHPAD
};
static constexpr const char* s_sdl_button_icons[] = {
ICON_PF_BUTTON_A, // SDL_CONTROLLER_BUTTON_A
ICON_PF_BUTTON_B, // SDL_CONTROLLER_BUTTON_B
ICON_PF_BUTTON_X, // SDL_CONTROLLER_BUTTON_X
ICON_PF_BUTTON_Y, // SDL_CONTROLLER_BUTTON_Y
ICON_PF_SHARE_CAPTURE, // SDL_CONTROLLER_BUTTON_BACK
ICON_PF_XBOX, // SDL_CONTROLLER_BUTTON_GUIDE
ICON_PF_BURGER_MENU, // SDL_CONTROLLER_BUTTON_START
ICON_PF_LEFT_ANALOG_CLICK, // SDL_CONTROLLER_BUTTON_LEFTSTICK
ICON_PF_RIGHT_ANALOG_CLICK, // SDL_CONTROLLER_BUTTON_RIGHTSTICK
ICON_PF_LEFT_SHOULDER_LB, // SDL_CONTROLLER_BUTTON_LEFTSHOULDER
ICON_PF_RIGHT_SHOULDER_RB, // SDL_CONTROLLER_BUTTON_RIGHTSHOULDER
ICON_PF_XBOX_DPAD_UP, // SDL_CONTROLLER_BUTTON_DPAD_UP
ICON_PF_XBOX_DPAD_DOWN, // SDL_CONTROLLER_BUTTON_DPAD_DOWN
ICON_PF_XBOX_DPAD_LEFT, // SDL_CONTROLLER_BUTTON_DPAD_LEFT
ICON_PF_XBOX_DPAD_RIGHT, // SDL_CONTROLLER_BUTTON_DPAD_RIGHT
};
static constexpr const GenericInputBinding s_sdl_generic_binding_button_mapping[] = {
GenericInputBinding::Cross, // SDL_CONTROLLER_BUTTON_A
GenericInputBinding::Circle, // SDL_CONTROLLER_BUTTON_B
GenericInputBinding::Square, // SDL_CONTROLLER_BUTTON_X
GenericInputBinding::Triangle, // SDL_CONTROLLER_BUTTON_Y
GenericInputBinding::Select, // SDL_CONTROLLER_BUTTON_BACK
GenericInputBinding::System, // SDL_CONTROLLER_BUTTON_GUIDE
GenericInputBinding::Start, // SDL_CONTROLLER_BUTTON_START
GenericInputBinding::L3, // SDL_CONTROLLER_BUTTON_LEFTSTICK
GenericInputBinding::R3, // SDL_CONTROLLER_BUTTON_RIGHTSTICK
GenericInputBinding::L1, // SDL_CONTROLLER_BUTTON_LEFTSHOULDER
GenericInputBinding::R1, // SDL_CONTROLLER_BUTTON_RIGHTSHOULDER
GenericInputBinding::DPadUp, // SDL_CONTROLLER_BUTTON_DPAD_UP
GenericInputBinding::DPadDown, // SDL_CONTROLLER_BUTTON_DPAD_DOWN
GenericInputBinding::DPadLeft, // SDL_CONTROLLER_BUTTON_DPAD_LEFT
GenericInputBinding::DPadRight, // SDL_CONTROLLER_BUTTON_DPAD_RIGHT
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_MISC1
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_PADDLE1
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_PADDLE2
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_PADDLE3
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_PADDLE4
GenericInputBinding::Unknown, // SDL_CONTROLLER_BUTTON_TOUCHPAD
};
static constexpr const char* s_sdl_hat_direction_names[] = {
// clang-format off
"North",
"East",
"South",
"West",
// clang-format on
};
static constexpr const char* s_sdl_default_led_colors[] = {
"0000ff", // SDL-0
"ff0000", // SDL-1
"00ff00", // SDL-2
"ffff00", // SDL-3
};
static void SetControllerRGBLED(SDL_GameController* gc, u32 color)
{
SDL_GameControllerSetLED(gc, (color >> 16) & 0xff, (color >> 8) & 0xff, color & 0xff);
}
static void SDLLogCallback(void* userdata, int category, SDL_LogPriority priority, const char* message)
{
static constexpr LOGLEVEL priority_map[SDL_NUM_LOG_PRIORITIES] = {
LOGLEVEL_DEBUG,
LOGLEVEL_DEBUG, // SDL_LOG_PRIORITY_VERBOSE
LOGLEVEL_DEBUG, // SDL_LOG_PRIORITY_DEBUG
LOGLEVEL_INFO, // SDL_LOG_PRIORITY_INFO
LOGLEVEL_WARNING, // SDL_LOG_PRIORITY_WARN
LOGLEVEL_ERROR, // SDL_LOG_PRIORITY_ERROR
LOGLEVEL_ERROR, // SDL_LOG_PRIORITY_CRITICAL
};
Log::Write("SDL", "SDL", priority_map[priority], message);
}
SDLInputSource::SDLInputSource() = default;
SDLInputSource::~SDLInputSource()
{
Assert(m_controllers.empty());
}
bool SDLInputSource::Initialize(SettingsInterface& si, std::unique_lock<std::mutex>& settings_lock)
{
LoadSettings(si);
settings_lock.unlock();
SetHints();
bool result = InitializeSubsystem();
settings_lock.lock();
return result;
}
void SDLInputSource::UpdateSettings(SettingsInterface& si, std::unique_lock<std::mutex>& settings_lock)
{
const bool old_controller_enhanced_mode = m_controller_enhanced_mode;
LoadSettings(si);
if (m_controller_enhanced_mode != old_controller_enhanced_mode)
{
settings_lock.unlock();
ShutdownSubsystem();
SetHints();
InitializeSubsystem();
settings_lock.lock();
}
}
bool SDLInputSource::ReloadDevices()
{
// We'll get a GC added/removed event here.
PollEvents();
return false;
}
void SDLInputSource::Shutdown()
{
ShutdownSubsystem();
}
void SDLInputSource::LoadSettings(SettingsInterface& si)
{
m_controller_enhanced_mode = si.GetBoolValue("InputSources", "SDLControllerEnhancedMode", false);
m_sdl_hints = si.GetKeyValueList("SDLHints");
for (u32 i = 0; i < MAX_LED_COLORS; i++)
{
const u32 color = GetRGBForPlayerId(si, i);
if (m_led_colors[i] == color)
continue;
m_led_colors[i] = color;
const auto it = GetControllerDataForPlayerId(i);
if (it == m_controllers.end() || !it->game_controller || !SDL_GameControllerHasLED(it->game_controller))
continue;
SetControllerRGBLED(it->game_controller, color);
}
}
u32 SDLInputSource::GetRGBForPlayerId(SettingsInterface& si, u32 player_id)
{
return ParseRGBForPlayerId(
si.GetStringValue("SDLExtra", fmt::format("Player{}LED", player_id).c_str(), s_sdl_default_led_colors[player_id]),
player_id);
}
u32 SDLInputSource::ParseRGBForPlayerId(const std::string_view& str, u32 player_id)
{
if (player_id >= MAX_LED_COLORS)
return 0;
const u32 default_color = StringUtil::FromChars<u32>(s_sdl_default_led_colors[player_id], 16).value_or(0);
const u32 color = StringUtil::FromChars<u32>(str, 16).value_or(default_color);
return color;
}
void SDLInputSource::SetHints()
{
const std::string controller_db_path = Path::Combine(EmuFolders::Resources, CONTROLLER_DB_FILENAME);
if (FileSystem::FileExists(controller_db_path.c_str()))
SDL_SetHint(SDL_HINT_GAMECONTROLLERCONFIG_FILE, controller_db_path.c_str());
else
Log_ErrorFmt("Controller DB not found at '{}'", controller_db_path);
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_PS4_RUMBLE, m_controller_enhanced_mode ? "1" : "0");
SDL_SetHint(SDL_HINT_JOYSTICK_HIDAPI_PS5_RUMBLE, m_controller_enhanced_mode ? "1" : "0");
// Enable Wii U Pro Controller support
// New as of SDL 2.26, so use string
SDL_SetHint("SDL_JOYSTICK_HIDAPI_WII", "1");
#ifndef _WIN32
// Gets us pressure sensitive button support on Linux
// Apparently doesn't work on Windows, so leave it off there
// New as of SDL 2.26, so use string
SDL_SetHint("SDL_JOYSTICK_HIDAPI_PS3", "1");
#endif
for (const std::pair<std::string, std::string>& hint : m_sdl_hints)
SDL_SetHint(hint.first.c_str(), hint.second.c_str());
}
bool SDLInputSource::InitializeSubsystem()
{
if (SDL_InitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER | SDL_INIT_HAPTIC) < 0)
{
Log_ErrorPrint("SDL_InitSubSystem(SDL_INIT_JOYSTICK |SDL_INIT_GAMECONTROLLER | SDL_INIT_HAPTIC) failed");
return false;
}
SDL_LogSetOutputFunction(SDLLogCallback, nullptr);
#ifdef _DEBUG
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
#else
SDL_LogSetAllPriority(SDL_LOG_PRIORITY_INFO);
#endif
// we should open the controllers as the connected events come in, so no need to do any more here
m_sdl_subsystem_initialized = true;
return true;
}
void SDLInputSource::ShutdownSubsystem()
{
while (!m_controllers.empty())
CloseDevice(m_controllers.begin()->joystick_id);
if (m_sdl_subsystem_initialized)
{
SDL_QuitSubSystem(SDL_INIT_JOYSTICK | SDL_INIT_GAMECONTROLLER | SDL_INIT_HAPTIC);
m_sdl_subsystem_initialized = false;
}
}
void SDLInputSource::PollEvents()
{
for (;;)
{
SDL_Event ev;
if (SDL_PollEvent(&ev))
ProcessSDLEvent(&ev);
else
break;
}
}
std::vector<std::pair<std::string, std::string>> SDLInputSource::EnumerateDevices()
{
std::vector<std::pair<std::string, std::string>> ret;
for (const ControllerData& cd : m_controllers)
{
std::string id = fmt::format("SDL-{}", cd.player_id);
const char* name = cd.game_controller ? SDL_GameControllerName(cd.game_controller) : SDL_JoystickName(cd.joystick);
if (name)
ret.emplace_back(std::move(id), name);
else
ret.emplace_back(std::move(id), "Unknown Device");
}
return ret;
}
std::optional<InputBindingKey> SDLInputSource::ParseKeyString(const std::string_view& device,
const std::string_view& binding)
{
if (!device.starts_with("SDL-") || binding.empty())
return std::nullopt;
const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
if (!player_id.has_value() || player_id.value() < 0)
return std::nullopt;
InputBindingKey key = {};
key.source_type = InputSourceType::SDL;
key.source_index = static_cast<u32>(player_id.value());
if (binding.ends_with("Motor"))
{
key.source_subtype = InputSubclass::ControllerMotor;
if (binding == "LargeMotor")
{
key.data = 0;
return key;
}
else if (binding == "SmallMotor")
{
key.data = 1;
return key;
}
else
{
return std::nullopt;
}
}
else if (binding.ends_with("Haptic"))
{
key.source_subtype = InputSubclass::ControllerHaptic;
key.data = 0;
return key;
}
else if (binding[0] == '+' || binding[0] == '-')
{
// likely an axis
const std::string_view axis_name(binding.substr(1));
if (axis_name.starts_with("Axis"))
{
std::string_view end;
if (auto value = StringUtil::FromChars<u32>(axis_name.substr(4), 10, &end))
{
key.source_subtype = InputSubclass::ControllerAxis;
key.data = *value + static_cast<u32>(std::size(s_sdl_axis_names));
key.modifier = (binding[0] == '-') ? InputModifier::Negate : InputModifier::None;
key.invert = (end == "~");
return key;
}
}
for (u32 i = 0; i < std::size(s_sdl_axis_names); i++)
{
if (axis_name == s_sdl_axis_names[i])
{
// found an axis!
key.source_subtype = InputSubclass::ControllerAxis;
key.data = i;
key.modifier = (binding[0] == '-') ? InputModifier::Negate : InputModifier::None;
return key;
}
}
}
else if (binding.starts_with("FullAxis"))
{
std::string_view end;
if (auto value = StringUtil::FromChars<u32>(binding.substr(8), 10, &end))
{
key.source_subtype = InputSubclass::ControllerAxis;
key.data = *value + static_cast<u32>(std::size(s_sdl_axis_names));
key.modifier = InputModifier::FullAxis;
key.invert = (end == "~");
return key;
}
}
else if (binding.starts_with("Hat"))
{
std::string_view hat_dir;
if (auto value = StringUtil::FromChars<u32>(binding.substr(3), 10, &hat_dir); value.has_value() && !hat_dir.empty())
{
for (u8 dir = 0; dir < static_cast<u8>(std::size(s_sdl_hat_direction_names)); dir++)
{
if (hat_dir == s_sdl_hat_direction_names[dir])
{
key.source_subtype = InputSubclass::ControllerHat;
key.data = value.value() * static_cast<u32>(std::size(s_sdl_hat_direction_names)) + dir;
return key;
}
}
}
}
else
{
// must be a button
if (binding.starts_with("Button"))
{
if (auto value = StringUtil::FromChars<u32>(binding.substr(6)))
{
key.source_subtype = InputSubclass::ControllerButton;
key.data = *value + static_cast<u32>(std::size(s_sdl_button_names));
return key;
}
}
for (u32 i = 0; i < std::size(s_sdl_button_names); i++)
{
if (binding == s_sdl_button_names[i])
{
key.source_subtype = InputSubclass::ControllerButton;
key.data = i;
return key;
}
}
}
// unknown axis/button
return std::nullopt;
}
TinyString SDLInputSource::ConvertKeyToString(InputBindingKey key)
{
TinyString ret;
if (key.source_type == InputSourceType::SDL)
{
if (key.source_subtype == InputSubclass::ControllerAxis)
{
const char* modifier =
(key.modifier == InputModifier::FullAxis ? "Full" : (key.modifier == InputModifier::Negate ? "-" : "+"));
if (key.data < std::size(s_sdl_axis_names))
{
ret.format("SDL-{}/{}{}", static_cast<u32>(key.source_index), modifier, s_sdl_axis_names[key.data]);
}
else
{
ret.format("SDL-{}/{}Axis{}{}", static_cast<u32>(key.source_index), modifier,
key.data - static_cast<u32>(std::size(s_sdl_axis_names)), key.invert ? "~" : "");
}
}
else if (key.source_subtype == InputSubclass::ControllerButton)
{
if (key.data < std::size(s_sdl_button_names))
{
ret.format("SDL-{}/{}", static_cast<u32>(key.source_index), s_sdl_button_names[key.data]);
}
else
{
ret.format("SDL-{}/Button{}", static_cast<u32>(key.source_index),
key.data - static_cast<u32>(std::size(s_sdl_button_names)));
}
}
else if (key.source_subtype == InputSubclass::ControllerHat)
{
const u32 hat_index = key.data / static_cast<u32>(std::size(s_sdl_hat_direction_names));
const u32 hat_direction = key.data % static_cast<u32>(std::size(s_sdl_hat_direction_names));
ret.format("SDL-{}/Hat{}{}", static_cast<u32>(key.source_index), hat_index,
s_sdl_hat_direction_names[hat_direction]);
}
else if (key.source_subtype == InputSubclass::ControllerMotor)
{
ret.format("SDL-{}/{}Motor", static_cast<u32>(key.source_index), key.data ? "Large" : "Small");
}
else if (key.source_subtype == InputSubclass::ControllerHaptic)
{
ret.format("SDL-{}/Haptic", static_cast<u32>(key.source_index));
}
}
return ret;
}
TinyString SDLInputSource::ConvertKeyToIcon(InputBindingKey key)
{
TinyString ret;
if (key.source_type == InputSourceType::SDL)
{
if (key.source_subtype == InputSubclass::ControllerAxis)
{
if (key.data < std::size(s_sdl_axis_icons) && key.modifier != InputModifier::FullAxis)
{
ret.format("SDL-{} {}", static_cast<u32>(key.source_index),
s_sdl_axis_icons[key.data][key.modifier == InputModifier::None]);
}
}
else if (key.source_subtype == InputSubclass::ControllerButton)
{
if (key.data < std::size(s_sdl_button_icons))
ret.format("SDL-{} {}", static_cast<u32>(key.source_index), s_sdl_button_icons[key.data]);
}
}
return ret;
}
bool SDLInputSource::ProcessSDLEvent(const SDL_Event* event)
{
switch (event->type)
{
case SDL_CONTROLLERDEVICEADDED:
{
Log_InfoPrintf("(SDLInputSource) Controller %d inserted", event->cdevice.which);
OpenDevice(event->cdevice.which, true);
return true;
}
case SDL_CONTROLLERDEVICEREMOVED:
{
Log_InfoPrintf("(SDLInputSource) Controller %d removed", event->cdevice.which);
CloseDevice(event->cdevice.which);
return true;
}
case SDL_JOYDEVICEADDED:
{
// Let game controller handle.. well.. game controllers.
if (SDL_IsGameController(event->jdevice.which))
return false;
Log_InfoPrintf("(SDLInputSource) Joystick %d inserted", event->jdevice.which);
OpenDevice(event->cdevice.which, false);
return true;
}
break;
case SDL_JOYDEVICEREMOVED:
{
if (auto it = GetControllerDataForJoystickId(event->cdevice.which);
it != m_controllers.end() && it->game_controller)
return false;
Log_InfoPrintf("(SDLInputSource) Joystick %d removed", event->jdevice.which);
CloseDevice(event->cdevice.which);
return true;
}
case SDL_CONTROLLERAXISMOTION:
return HandleControllerAxisEvent(&event->caxis);
case SDL_CONTROLLERBUTTONDOWN:
case SDL_CONTROLLERBUTTONUP:
return HandleControllerButtonEvent(&event->cbutton);
case SDL_JOYAXISMOTION:
return HandleJoystickAxisEvent(&event->jaxis);
case SDL_JOYBUTTONDOWN:
case SDL_JOYBUTTONUP:
return HandleJoystickButtonEvent(&event->jbutton);
case SDL_JOYHATMOTION:
return HandleJoystickHatEvent(&event->jhat);
default:
return false;
}
}
SDL_Joystick* SDLInputSource::GetJoystickForDevice(const std::string_view& device)
{
if (!device.starts_with("SDL-"))
return nullptr;
const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
if (!player_id.has_value() || player_id.value() < 0)
return nullptr;
auto it = GetControllerDataForPlayerId(player_id.value());
if (it == m_controllers.end())
return nullptr;
return it->joystick;
}
SDLInputSource::ControllerDataVector::iterator SDLInputSource::GetControllerDataForJoystickId(int id)
{
return std::find_if(m_controllers.begin(), m_controllers.end(),
[id](const ControllerData& cd) { return cd.joystick_id == id; });
}
SDLInputSource::ControllerDataVector::iterator SDLInputSource::GetControllerDataForPlayerId(int id)
{
return std::find_if(m_controllers.begin(), m_controllers.end(),
[id](const ControllerData& cd) { return cd.player_id == id; });
}
int SDLInputSource::GetFreePlayerId() const
{
for (int player_id = 0;; player_id++)
{
size_t i;
for (i = 0; i < m_controllers.size(); i++)
{
if (m_controllers[i].player_id == player_id)
break;
}
if (i == m_controllers.size())
return player_id;
}
return 0;
}
bool SDLInputSource::OpenDevice(int index, bool is_gamecontroller)
{
SDL_GameController* gcontroller;
SDL_Joystick* joystick;
if (is_gamecontroller)
{
gcontroller = SDL_GameControllerOpen(index);
joystick = gcontroller ? SDL_GameControllerGetJoystick(gcontroller) : nullptr;
}
else
{
gcontroller = nullptr;
joystick = SDL_JoystickOpen(index);
}
if (!gcontroller && !joystick)
{
Log_ErrorPrintf("(SDLInputSource) Failed to open controller %d", index);
if (gcontroller)
SDL_GameControllerClose(gcontroller);
return false;
}
const int joystick_id = SDL_JoystickInstanceID(joystick);
int player_id = gcontroller ? SDL_GameControllerGetPlayerIndex(gcontroller) : SDL_JoystickGetPlayerIndex(joystick);
if (player_id < 0 || GetControllerDataForPlayerId(player_id) != m_controllers.end())
{
const int free_player_id = GetFreePlayerId();
Log_WarningPrintf("(SDLInputSource) Controller %d (joystick %d) returned player ID %d, which is invalid or in "
"use. Using ID %d instead.",
index, joystick_id, player_id, free_player_id);
player_id = free_player_id;
}
const char* name = gcontroller ? SDL_GameControllerName(gcontroller) : SDL_JoystickName(joystick);
if (!name)
name = "Unknown Device";
Log_VerbosePrintf("(SDLInputSource) Opened %s %d (instance id %d, player id %d): %s",
is_gamecontroller ? "game controller" : "joystick", index, joystick_id, player_id, name);
ControllerData cd = {};
cd.player_id = player_id;
cd.joystick_id = joystick_id;
cd.haptic_left_right_effect = -1;
cd.game_controller = gcontroller;
cd.joystick = joystick;
if (gcontroller)
{
const int num_axes = SDL_JoystickNumAxes(joystick);
const int num_buttons = SDL_JoystickNumButtons(joystick);
cd.joy_axis_used_in_gc.resize(num_axes, false);
cd.joy_button_used_in_gc.resize(num_buttons, false);
auto mark_bind = [&](SDL_GameControllerButtonBind bind) {
if (bind.bindType == SDL_CONTROLLER_BINDTYPE_AXIS && bind.value.axis < num_axes)
cd.joy_axis_used_in_gc[bind.value.axis] = true;
if (bind.bindType == SDL_CONTROLLER_BINDTYPE_BUTTON && bind.value.button < num_buttons)
cd.joy_button_used_in_gc[bind.value.button] = true;
};
for (size_t i = 0; i < std::size(s_sdl_axis_names); i++)
mark_bind(SDL_GameControllerGetBindForAxis(gcontroller, static_cast<SDL_GameControllerAxis>(i)));
for (size_t i = 0; i < std::size(s_sdl_button_names); i++)
mark_bind(SDL_GameControllerGetBindForButton(gcontroller, static_cast<SDL_GameControllerButton>(i)));
}
else
{
// GC doesn't have the concept of hats, so we only need to do this for joysticks.
const int num_hats = SDL_JoystickNumHats(joystick);
if (num_hats > 0)
cd.last_hat_state.resize(static_cast<size_t>(num_hats), u8(0));
}
cd.use_game_controller_rumble = (gcontroller && SDL_GameControllerRumble(gcontroller, 0, 0, 0) == 0);
if (cd.use_game_controller_rumble)
{
Log_VerbosePrintf("(SDLInputSource) Rumble is supported on '%s' via gamecontroller", name);
}
else
{
SDL_Haptic* haptic = SDL_HapticOpenFromJoystick(joystick);
if (haptic)
{
SDL_HapticEffect ef = {};
ef.leftright.type = SDL_HAPTIC_LEFTRIGHT;
ef.leftright.length = 1000;
int ef_id = SDL_HapticNewEffect(haptic, &ef);
if (ef_id >= 0)
{
cd.haptic = haptic;
cd.haptic_left_right_effect = ef_id;
}
else
{
Log_ErrorPrintf("(SDLInputSource) Failed to create haptic left/right effect: %s", SDL_GetError());
if (SDL_HapticRumbleSupported(haptic) && SDL_HapticRumbleInit(haptic) != 0)
{
cd.haptic = haptic;
}
else
{
Log_ErrorPrintf("(SDLInputSource) No haptic rumble supported: %s", SDL_GetError());
SDL_HapticClose(haptic);
}
}
}
if (cd.haptic)
Log_VerbosePrintf("(SDLInputSource) Rumble is supported on '%s' via haptic", name);
}
if (!cd.haptic && !cd.use_game_controller_rumble)
Log_VerbosePrintf("(SDLInputSource) Rumble is not supported on '%s'", name);
if (player_id >= 0 && static_cast<u32>(player_id) < MAX_LED_COLORS && gcontroller &&
SDL_GameControllerHasLED(gcontroller))
{
SetControllerRGBLED(gcontroller, m_led_colors[player_id]);
}
m_controllers.push_back(std::move(cd));
InputManager::OnInputDeviceConnected(fmt::format("SDL-{}", player_id), name);
return true;
}
bool SDLInputSource::CloseDevice(int joystick_index)
{
auto it = GetControllerDataForJoystickId(joystick_index);
if (it == m_controllers.end())
return false;
InputManager::OnInputDeviceDisconnected(fmt::format("SDL-{}", it->player_id));
if (it->haptic)
SDL_HapticClose(it->haptic);
if (it->game_controller)
SDL_GameControllerClose(it->game_controller);
else
SDL_JoystickClose(it->joystick);
m_controllers.erase(it);
return true;
}
static float NormalizeS16(s16 value)
{
return static_cast<float>(value) / (value < 0 ? 32768.0f : 32767.0f);
}
bool SDLInputSource::HandleControllerAxisEvent(const SDL_ControllerAxisEvent* ev)
{
auto it = GetControllerDataForJoystickId(ev->which);
if (it == m_controllers.end())
return false;
const InputBindingKey key(MakeGenericControllerAxisKey(InputSourceType::SDL, it->player_id, ev->axis));
InputManager::InvokeEvents(key, NormalizeS16(ev->value));
return true;
}
bool SDLInputSource::HandleControllerButtonEvent(const SDL_ControllerButtonEvent* ev)
{
auto it = GetControllerDataForJoystickId(ev->which);
if (it == m_controllers.end())
return false;
const InputBindingKey key(MakeGenericControllerButtonKey(InputSourceType::SDL, it->player_id, ev->button));
const GenericInputBinding generic_key = (ev->button < std::size(s_sdl_generic_binding_button_mapping)) ?
s_sdl_generic_binding_button_mapping[ev->button] :
GenericInputBinding::Unknown;
InputManager::InvokeEvents(key, (ev->state == SDL_PRESSED) ? 1.0f : 0.0f, generic_key);
return true;
}
bool SDLInputSource::HandleJoystickAxisEvent(const SDL_JoyAxisEvent* ev)
{
auto it = GetControllerDataForJoystickId(ev->which);
if (it == m_controllers.end())
return false;
if (ev->axis < it->joy_axis_used_in_gc.size() && it->joy_axis_used_in_gc[ev->axis])
return false; // Will get handled by GC event
const u32 axis = ev->axis + static_cast<u32>(std::size(s_sdl_axis_names)); // Ensure we don't conflict with GC axes
const InputBindingKey key(MakeGenericControllerAxisKey(InputSourceType::SDL, it->player_id, axis));
InputManager::InvokeEvents(key, NormalizeS16(ev->value));
return true;
}
bool SDLInputSource::HandleJoystickButtonEvent(const SDL_JoyButtonEvent* ev)
{
auto it = GetControllerDataForJoystickId(ev->which);
if (it == m_controllers.end())
return false;
if (ev->button < it->joy_button_used_in_gc.size() && it->joy_button_used_in_gc[ev->button])
return false; // Will get handled by GC event
const u32 button =
ev->button + static_cast<u32>(std::size(s_sdl_button_names)); // Ensure we don't conflict with GC buttons
const InputBindingKey key(MakeGenericControllerButtonKey(InputSourceType::SDL, it->player_id, button));
InputManager::InvokeEvents(key, (ev->state == SDL_PRESSED) ? 1.0f : 0.0f);
return true;
}
bool SDLInputSource::HandleJoystickHatEvent(const SDL_JoyHatEvent* ev)
{
auto it = GetControllerDataForJoystickId(ev->which);
if (it == m_controllers.end() || ev->hat >= it->last_hat_state.size())
return false;
const unsigned long last_direction = it->last_hat_state[ev->hat];
it->last_hat_state[ev->hat] = ev->value;
unsigned long changed_direction = last_direction ^ ev->value;
while (changed_direction != 0)
{
const u32 pos = CountTrailingZeros(changed_direction);
const unsigned long mask = (1u << pos);
changed_direction &= ~mask;
const InputBindingKey key(MakeGenericControllerHatKey(InputSourceType::SDL, it->player_id, ev->hat,
static_cast<u8>(pos),
static_cast<u32>(std::size(s_sdl_hat_direction_names))));
InputManager::InvokeEvents(key, (last_direction & mask) ? 0.0f : 1.0f);
}
return true;
}
std::vector<InputBindingKey> SDLInputSource::EnumerateMotors()
{
std::vector<InputBindingKey> ret;
InputBindingKey key = {};
key.source_type = InputSourceType::SDL;
for (ControllerData& cd : m_controllers)
{
key.source_index = cd.player_id;
if (cd.use_game_controller_rumble || cd.haptic_left_right_effect)
{
// two motors
key.source_subtype = InputSubclass::ControllerMotor;
key.data = 0;
ret.push_back(key);
key.data = 1;
ret.push_back(key);
}
else if (cd.haptic)
{
// haptic effect
key.source_subtype = InputSubclass::ControllerHaptic;
key.data = 0;
ret.push_back(key);
}
}
return ret;
}
bool SDLInputSource::GetGenericBindingMapping(const std::string_view& device, GenericInputBindingMapping* mapping)
{
if (!device.starts_with("SDL-"))
return false;
const std::optional<s32> player_id = StringUtil::FromChars<s32>(device.substr(4));
if (!player_id.has_value() || player_id.value() < 0)
return false;
ControllerDataVector::iterator it = GetControllerDataForPlayerId(player_id.value());
if (it == m_controllers.end())
return false;
if (it->game_controller)
{
// assume all buttons are present.
const s32 pid = player_id.value();
for (u32 i = 0; i < std::size(s_sdl_generic_binding_axis_mapping); i++)
{
const GenericInputBinding negative = s_sdl_generic_binding_axis_mapping[i][0];
const GenericInputBinding positive = s_sdl_generic_binding_axis_mapping[i][1];
if (negative != GenericInputBinding::Unknown)
mapping->emplace_back(negative, fmt::format("SDL-{}/-{}", pid, s_sdl_axis_names[i]));
if (positive != GenericInputBinding::Unknown)
mapping->emplace_back(positive, fmt::format("SDL-{}/+{}", pid, s_sdl_axis_names[i]));
}
for (u32 i = 0; i < std::size(s_sdl_generic_binding_button_mapping); i++)
{
const GenericInputBinding binding = s_sdl_generic_binding_button_mapping[i];
if (binding != GenericInputBinding::Unknown)
mapping->emplace_back(binding, fmt::format("SDL-{}/{}", pid, s_sdl_button_names[i]));
}
if (it->use_game_controller_rumble || it->haptic_left_right_effect)
{
mapping->emplace_back(GenericInputBinding::SmallMotor, fmt::format("SDL-{}/SmallMotor", pid));
mapping->emplace_back(GenericInputBinding::LargeMotor, fmt::format("SDL-{}/LargeMotor", pid));
}
else
{
mapping->emplace_back(GenericInputBinding::SmallMotor, fmt::format("SDL-{}/Haptic", pid));
mapping->emplace_back(GenericInputBinding::LargeMotor, fmt::format("SDL-{}/Haptic", pid));
}
return true;
}
else
{
// joysticks have arbitrary axis numbers, so automapping isn't going to work here.
return false;
}
}
void SDLInputSource::UpdateMotorState(InputBindingKey key, float intensity)
{
if (key.source_subtype != InputSubclass::ControllerMotor && key.source_subtype != InputSubclass::ControllerHaptic)
return;
auto it = GetControllerDataForPlayerId(key.source_index);
if (it == m_controllers.end())
return;
it->rumble_intensity[key.data] = static_cast<u16>(intensity * 65535.0f);
SendRumbleUpdate(&(*it));
}
void SDLInputSource::UpdateMotorState(InputBindingKey large_key, InputBindingKey small_key, float large_intensity,
float small_intensity)
{
if (large_key.source_index != small_key.source_index || large_key.source_subtype != InputSubclass::ControllerMotor ||
small_key.source_subtype != InputSubclass::ControllerMotor)
{
// bonkers config where they're mapped to different controllers... who would do such a thing?
UpdateMotorState(large_key, large_intensity);
UpdateMotorState(small_key, small_intensity);
return;
}
auto it = GetControllerDataForPlayerId(large_key.source_index);
if (it == m_controllers.end())
return;
it->rumble_intensity[large_key.data] = static_cast<u16>(large_intensity * 65535.0f);
it->rumble_intensity[small_key.data] = static_cast<u16>(small_intensity * 65535.0f);
SendRumbleUpdate(&(*it));
}
void SDLInputSource::SendRumbleUpdate(ControllerData* cd)
{
// we'll update before this duration is elapsed
static constexpr u32 DURATION = 65535; // SDL_MAX_RUMBLE_DURATION_MS
if (cd->use_game_controller_rumble)
{
SDL_GameControllerRumble(cd->game_controller, cd->rumble_intensity[0], cd->rumble_intensity[1], DURATION);
return;
}
if (cd->haptic_left_right_effect >= 0)
{
if ((static_cast<u32>(cd->rumble_intensity[0]) + static_cast<u32>(cd->rumble_intensity[1])) > 0)
{
SDL_HapticEffect ef;
ef.type = SDL_HAPTIC_LEFTRIGHT;
ef.leftright.large_magnitude = cd->rumble_intensity[0];
ef.leftright.small_magnitude = cd->rumble_intensity[1];
ef.leftright.length = DURATION;
SDL_HapticUpdateEffect(cd->haptic, cd->haptic_left_right_effect, &ef);
SDL_HapticRunEffect(cd->haptic, cd->haptic_left_right_effect, SDL_HAPTIC_INFINITY);
}
else
{
SDL_HapticStopEffect(cd->haptic, cd->haptic_left_right_effect);
}
}
else
{
const float strength =
static_cast<float>(std::max(cd->rumble_intensity[0], cd->rumble_intensity[1])) * (1.0f / 65535.0f);
if (strength > 0.0f)
SDL_HapticRumblePlay(cd->haptic, strength, DURATION);
else
SDL_HapticRumbleStop(cd->haptic);
}
}
std::unique_ptr<InputSource> InputSource::CreateSDLSource()
{
return std::make_unique<SDLInputSource>();
}
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