Add support for SDL controller accelerometer/gyro events

CMakeLists.txt

@@ -144,7 +144,7 @@ if (ENABLE_SDL2)
     if (CITRA_USE_BUNDLED_SDL2)
         # Detect toolchain and platform
         if ((MSVC_VERSION GREATER_EQUAL 1910 AND MSVC_VERSION LESS 1930) AND ARCHITECTURE_x86_64)
-            set(SDL2_VER "SDL2-2.0.12")
+            set(SDL2_VER "SDL2-2.0.16")
         else()
             message(FATAL_ERROR "No bundled SDL2 binaries for your toolchain. Disable CITRA_USE_BUNDLED_SDL2 and provide your own.")
         endif()

src/citra_qt/configuration/configure_motion_touch.cpp

@@ -7,6 +7,7 @@
 #include <QLabel>
 #include <QMessageBox>
 #include <QPushButton>
+#include <QTimer>
 #include <QVBoxLayout>
 #include "citra_qt/configuration/configure_motion_touch.h"
 #include "citra_qt/configuration/configure_touch_from_button.h"
@@ -70,16 +71,18 @@ void CalibrationConfigurationDialog::UpdateButtonText(QString text) {
     cancel_button->setText(text);
 }
 
-const std::array<std::pair<const char*, const char*>, 2> MotionProviders = {
+const std::array<std::pair<const char*, const char*>, 3> MotionProviders = {
     {{"motion_emu", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "Mouse (Right Click)")},
-     {"cemuhookudp", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "CemuhookUDP")}}};
+     {"cemuhookudp", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "CemuhookUDP")},
+     {"sdl", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "SDL")}}};
 
 const std::array<std::pair<const char*, const char*>, 2> TouchProviders = {
     {{"emu_window", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "Emulator Window")},
      {"cemuhookudp", QT_TRANSLATE_NOOP("ConfigureMotionTouch", "CemuhookUDP")}}};
 
 ConfigureMotionTouch::ConfigureMotionTouch(QWidget* parent)
-    : QDialog(parent), ui(std::make_unique<Ui::ConfigureMotionTouch>()) {
+    : QDialog(parent), ui(std::make_unique<Ui::ConfigureMotionTouch>()),
+      timeout_timer(std::make_unique<QTimer>()), poll_timer(std::make_unique<QTimer>()) {
     ui->setupUi(this);
     for (auto [provider, name] : MotionProviders) {
         ui->motion_provider->addItem(tr(name), QString::fromUtf8(provider));
@@ -95,6 +98,22 @@ ConfigureMotionTouch::ConfigureMotionTouch(QWidget* parent)
            "using-a-controller-or-android-phone-for-motion-or-touch-input'><span "
            "style=\"text-decoration: underline; color:#039be5;\">Learn More</span></a>"));
 
+    timeout_timer->setSingleShot(true);
+    connect(timeout_timer.get(), &QTimer::timeout, [this]() { SetPollingResult({}, true); });
+
+    connect(poll_timer.get(), &QTimer::timeout, [this]() {
+        Common::ParamPackage params;
+        for (auto& poller : device_pollers) {
+            params = poller->GetNextInput();
+            // We want all the input systems to be in a "polling" state, but we only care about the
+            // input from SDL.
+            if (params.Has("engine") && params.Get("engine", "") == "sdl") {
+                SetPollingResult(params, false);
+                return;
+            }
+        }
+    });
+
     SetConfiguration();
     UpdateUiDisplay();
     ConnectEvents();
@@ -122,6 +141,9 @@ void ConfigureMotionTouch::SetConfiguration() {
         Settings::values.current_input_profile.touch_from_button_map_index);
     ui->motion_sensitivity->setValue(motion_param.Get("sensitivity", 0.01f));
 
+    guid = motion_param.Get("guid", "0");
+    port = motion_param.Get("port", 0);
+
     min_x = touch_param.Get("min_x", 100);
     min_y = touch_param.Get("min_y", 50);
     max_x = touch_param.Get("max_x", 1800);
@@ -145,6 +167,14 @@ void ConfigureMotionTouch::UpdateUiDisplay() {
         ui->motion_sensitivity->setVisible(false);
     }
 
+    if (motion_engine == "sdl") {
+        ui->motion_controller_label->setVisible(true);
+        ui->motion_controller_button->setVisible(true);
+    } else {
+        ui->motion_controller_label->setVisible(false);
+        ui->motion_controller_button->setVisible(false);
+    }
+
     if (touch_engine == "cemuhookudp") {
         ui->touch_calibration->setVisible(true);
         ui->touch_calibration_config->setVisible(true);
@@ -172,6 +202,30 @@ void ConfigureMotionTouch::ConnectEvents() {
     connect(ui->touch_provider,
             static_cast<void (QComboBox::*)(int)>(&QComboBox::currentIndexChanged), this,
             [this]([[maybe_unused]] int index) { UpdateUiDisplay(); });
+    connect(ui->motion_controller_button, &QPushButton::clicked, [=]() {
+        if (QMessageBox::information(this, tr("Information"),
+                                     tr("After pressing OK, press a button on the controller whose "
+                                        "motion you want to track."),
+                                     QMessageBox::Ok | QMessageBox::Cancel) == QMessageBox::Ok) {
+            ui->motion_controller_button->setText(tr("[press button]"));
+            ui->motion_controller_button->setFocus();
+
+            input_setter = [=](const Common::ParamPackage& params) {
+                guid = params.Get("guid", "0");
+                port = params.Get("port", 0);
+            };
+
+            device_pollers =
+                InputCommon::Polling::GetPollers(InputCommon::Polling::DeviceType::Button);
+
+            for (auto& poller : device_pollers) {
+                poller->Start();
+            }
+
+            timeout_timer->start(5000); // Cancel after 5 seconds
+            poll_timer->start(200);     // Check for new inputs every 200ms
+        }
+    });
     connect(ui->udp_test, &QPushButton::clicked, this, &ConfigureMotionTouch::OnCemuhookUDPTest);
     connect(ui->touch_calibration_config, &QPushButton::clicked, this,
             &ConfigureMotionTouch::OnConfigureTouchCalibration);
@@ -183,6 +237,21 @@ void ConfigureMotionTouch::ConnectEvents() {
     });
 }
 
+void ConfigureMotionTouch::SetPollingResult(const Common::ParamPackage& params, bool abort) {
+    timeout_timer->stop();
+    poll_timer->stop();
+    for (auto& poller : device_pollers) {
+        poller->Stop();
+    }
+
+    if (!abort && input_setter) {
+        (*input_setter)(params);
+    }
+
+    ui->motion_controller_button->setText(tr("Configure"));
+    input_setter.reset();
+}
+
 void ConfigureMotionTouch::OnCemuhookUDPTest() {
     ui->udp_test->setEnabled(false);
     ui->udp_test->setText(tr("Testing"));
@@ -285,6 +354,9 @@ void ConfigureMotionTouch::ApplyConfiguration() {
 
     if (motion_engine == "motion_emu") {
         motion_param.Set("sensitivity", static_cast<float>(ui->motion_sensitivity->value()));
+    } else if (motion_engine == "sdl") {
+        motion_param.Set("guid", guid);
+        motion_param.Set("port", port);
     }
 
     if (touch_engine == "cemuhookudp") {

src/citra_qt/configuration/configure_motion_touch.h

@@ -8,11 +8,13 @@
 #include <QDialog>
 #include "common/param_package.h"
 #include "core/settings.h"
+#include "input_common/main.h"
 #include "input_common/udp/udp.h"
 
 class QVBoxLayout;
 class QLabel;
 class QPushButton;
+class QTimer;
 
 namespace Ui {
 class ConfigureMotionTouch;
@@ -63,10 +65,21 @@ private:
     void SetConfiguration();
     void UpdateUiDisplay();
     void ConnectEvents();
+    void SetPollingResult(const Common::ParamPackage& params, bool abort);
     bool CanCloseDialog();
 
     std::unique_ptr<Ui::ConfigureMotionTouch> ui;
 
+    // Used for SDL input polling
+    std::string guid;
+    int port;
+    std::unique_ptr<QTimer> timeout_timer;
+    std::unique_ptr<QTimer> poll_timer;
+    std::vector<std::unique_ptr<InputCommon::Polling::DevicePoller>> device_pollers;
+
+    /// This will be the the setting function when an input is awaiting configuration.
+    std::optional<std::function<void(const Common::ParamPackage&)>> input_setter;
+
     // Coordinate system of the CemuhookUDP touch provider
     int min_x, min_y, max_x, max_y;
 

src/citra_qt/configuration/configure_motion_touch.ui

@@ -67,6 +67,24 @@
         </item>
        </layout>
       </item>
+      <item>
+       <layout class="QHBoxLayout">
+        <item>
+         <widget class="QLabel" name="motion_controller_label">
+          <property name="text">
+           <string>Controller:</string>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QPushButton" name="motion_controller_button">
+          <property name="text">
+           <string>Configure</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </item>
      </layout>
     </widget>
    </item>

src/input_common/sdl/sdl_impl.cpp

@@ -173,6 +173,24 @@ public:
         std::lock_guard lock{mutex};
         return (state.hats.at(hat) & direction) != 0;
     }
+
+    void SetAccel(const float x, const float y, const float z) {
+        std::lock_guard lock{mutex};
+        state.accel.x = x;
+        state.accel.y = y;
+        state.accel.z = z;
+    }
+    void SetGyro(const float pitch, const float yaw, const float roll) {
+        std::lock_guard lock{mutex};
+        state.gyro.x = pitch;
+        state.gyro.y = yaw;
+        state.gyro.z = roll;
+    }
+    std::tuple<Common::Vec3<float>, Common::Vec3<float>> GetMotion() const {
+        std::lock_guard lock{mutex};
+        return std::make_tuple(state.accel, state.gyro);
+    }
+
     /**
      * The guid of the joystick
      */
@@ -204,6 +222,8 @@ private:
         std::unordered_map<int, bool> buttons;
         std::unordered_map<int, Sint16> axes;
         std::unordered_map<int, Uint8> hats;
+        Common::Vec3<float> accel;
+        Common::Vec3<float> gyro;
     } state;
     std::string guid;
     int port;
@@ -473,6 +493,14 @@ void SDLState::InitGameController(int controller_index) {
         LOG_WARNING(Input, "failed to open joystick {} as controller", controller_index);
         return;
     }
+#if SDL_VERSION_ATLEAST(2, 0, 14)
+    if (SDL_GameControllerHasSensor(sdl_controller, SDL_SENSOR_ACCEL)) {
+        SDL_GameControllerSetSensorEnabled(sdl_controller, SDL_SENSOR_ACCEL, SDL_TRUE);
+    }
+    if (SDL_GameControllerHasSensor(sdl_controller, SDL_SENSOR_GYRO)) {
+        SDL_GameControllerSetSensorEnabled(sdl_controller, SDL_SENSOR_GYRO, SDL_TRUE);
+    }
+#endif
     const std::string guid = GetGUID(SDL_GameControllerGetJoystick(sdl_controller));
 
     LOG_INFO(Input, "opened joystick {} as controller", controller_index);
@@ -557,6 +585,25 @@ void SDLState::HandleGameControllerEvent(const SDL_Event& event) {
         }
         break;
     }
+#if SDL_VERSION_ATLEAST(2, 0, 14)
+    case SDL_CONTROLLERSENSORUPDATE: {
+        if (auto joystick = GetSDLJoystickBySDLID(event.csensor.which)) {
+            switch (event.csensor.sensor) {
+            case SDL_SENSOR_ACCEL:
+                joystick->SetAccel(event.csensor.data[0] / SDL_STANDARD_GRAVITY,
+                                   -event.csensor.data[1] / SDL_STANDARD_GRAVITY,
+                                   event.csensor.data[2] / SDL_STANDARD_GRAVITY);
+                break;
+            case SDL_SENSOR_GYRO:
+                joystick->SetGyro(-event.csensor.data[0] * (180.0f / Common::PI),
+                                  event.csensor.data[1] * (180.0f / Common::PI),
+                                  -event.csensor.data[2] * (180.0f / Common::PI));
+                break;
+            }
+        }
+        break;
+    }
+#endif
     case SDL_JOYDEVICEREMOVED:
         LOG_DEBUG(Input, "Joystick removed with Instance_ID {}", event.jdevice.which);
         CloseJoystick(SDL_JoystickFromInstanceID(event.jdevice.which));
@@ -658,6 +705,18 @@ private:
     const float deadzone;
 };
 
+class SDLMotion final : public Input::MotionDevice {
+public:
+    explicit SDLMotion(std::shared_ptr<SDLJoystick> joystick_) : joystick(std::move(joystick_)) {}
+
+    std::tuple<Common::Vec3<float>, Common::Vec3<float>> GetStatus() const override {
+        return joystick->GetMotion();
+    }
+
+private:
+    std::shared_ptr<SDLJoystick> joystick;
+};
+
 /// A button device factory that creates button devices from SDL joystick
 class SDLButtonFactory final : public Input::Factory<Input::ButtonDevice> {
 public:
@@ -764,10 +823,28 @@ private:
     SDLState& state;
 };
 
+class SDLMotionFactory final : public Input::Factory<Input::MotionDevice> {
+public:
+    explicit SDLMotionFactory(SDLState& state_) : state(state_) {}
+
+    std::unique_ptr<Input::MotionDevice> Create(const Common::ParamPackage& params) override {
+        const std::string guid = params.Get("guid", "0");
+        const int port = params.Get("port", 0);
+
+        auto joystick = state.GetSDLJoystickByGUID(guid, port);
+
+        return std::make_unique<SDLMotion>(joystick);
+    }
+
+private:
+    SDLState& state;
+};
+
 SDLState::SDLState() {
     using namespace Input;
     RegisterFactory<ButtonDevice>("sdl", std::make_shared<SDLButtonFactory>(*this));
     RegisterFactory<AnalogDevice>("sdl", std::make_shared<SDLAnalogFactory>(*this));
+    RegisterFactory<MotionDevice>("sdl", std::make_shared<SDLMotionFactory>(*this));
 
     // If the frontend is going to manage the event loop, then we dont start one here
     start_thread = !SDL_WasInit(SDL_INIT_GAMECONTROLLER);
@@ -812,6 +889,7 @@ SDLState::~SDLState() {
     using namespace Input;
     UnregisterFactory<ButtonDevice>("sdl");
     UnregisterFactory<AnalogDevice>("sdl");
+    UnregisterFactory<MotionDevice>("sdl");
 
     CloseJoysticks();
     CloseGameControllers();

src/input_common/sdl/sdl_impl.h

@@ -22,6 +22,7 @@ class SDLJoystick;
 class SDLGameController;
 class SDLButtonFactory;
 class SDLAnalogFactory;
+class SDLMotionFactory;
 
 class SDLState : public State {
 public:
@@ -73,6 +74,7 @@ private:
 
     std::shared_ptr<SDLButtonFactory> button_factory;
     std::shared_ptr<SDLAnalogFactory> analog_factory;
+    std::shared_ptr<SDLMotionFactory> motion_factory;
 
     bool start_thread = false;
     std::atomic<bool> initialized = false;