1 files changed, 473 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/joystick/windows/SDL_xinputjoystick.c b/contrib/SDL-3.2.8/src/joystick/windows/SDL_xinputjoystick.c
new file mode 100644
index 0000000..9f6ce10
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/joystick/windows/SDL_xinputjoystick.c
@@ -0,0 +1,473 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "SDL_internal.h"
+
+#include "../SDL_sysjoystick.h"
+
+#ifdef SDL_JOYSTICK_XINPUT
+
+#include "SDL_windowsjoystick_c.h"
+#include "SDL_xinputjoystick_c.h"
+#include "SDL_rawinputjoystick_c.h"
+#include "../hidapi/SDL_hidapijoystick_c.h"
+
+// Set up for C function definitions, even when using C++
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Internal stuff.
+ */
+static bool s_bXInputEnabled = false;
+
+bool SDL_XINPUT_Enabled(void)
+{
+    return s_bXInputEnabled;
+}
+
+bool SDL_XINPUT_JoystickInit(void)
+{
+    bool enabled = SDL_GetHintBoolean(SDL_HINT_XINPUT_ENABLED, true);
+
+    if (enabled && !WIN_LoadXInputDLL()) {
+        enabled = false; // oh well.
+    }
+    s_bXInputEnabled = enabled;
+
+    return true;
+}
+
+static const char *GetXInputName(const Uint8 userid, BYTE SubType)
+{
+    static char name[32];
+
+    switch (SubType) {
+    case XINPUT_DEVSUBTYPE_GAMEPAD:
+        (void)SDL_snprintf(name, sizeof(name), "XInput Controller #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_WHEEL:
+        (void)SDL_snprintf(name, sizeof(name), "XInput Wheel #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_ARCADE_STICK:
+        (void)SDL_snprintf(name, sizeof(name), "XInput ArcadeStick #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_FLIGHT_STICK:
+        (void)SDL_snprintf(name, sizeof(name), "XInput FlightStick #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_DANCE_PAD:
+        (void)SDL_snprintf(name, sizeof(name), "XInput DancePad #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_GUITAR:
+    case XINPUT_DEVSUBTYPE_GUITAR_ALTERNATE:
+    case XINPUT_DEVSUBTYPE_GUITAR_BASS:
+        (void)SDL_snprintf(name, sizeof(name), "XInput Guitar #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_DRUM_KIT:
+        (void)SDL_snprintf(name, sizeof(name), "XInput DrumKit #%d", 1 + userid);
+        break;
+    case XINPUT_DEVSUBTYPE_ARCADE_PAD:
+        (void)SDL_snprintf(name, sizeof(name), "XInput ArcadePad #%d", 1 + userid);
+        break;
+    default:
+        (void)SDL_snprintf(name, sizeof(name), "XInput Device #%d", 1 + userid);
+        break;
+    }
+    return name;
+}
+
+static bool GetXInputDeviceInfo(Uint8 userid, Uint16 *pVID, Uint16 *pPID, Uint16 *pVersion)
+{
+    SDL_XINPUT_CAPABILITIES_EX capabilities;
+
+    if (!XINPUTGETCAPABILITIESEX || XINPUTGETCAPABILITIESEX(1, userid, 0, &capabilities) != ERROR_SUCCESS) {
+        // Use a generic VID/PID representing an XInput controller
+        if (pVID) {
+            *pVID = USB_VENDOR_MICROSOFT;
+        }
+        if (pPID) {
+            *pPID = USB_PRODUCT_XBOX360_XUSB_CONTROLLER;
+        }
+        return false;
+    }
+
+    // Fixup for Wireless Xbox 360 Controller
+    if (capabilities.ProductId == 0 && capabilities.Capabilities.Flags & XINPUT_CAPS_WIRELESS) {
+        capabilities.VendorId = USB_VENDOR_MICROSOFT;
+        capabilities.ProductId = USB_PRODUCT_XBOX360_XUSB_CONTROLLER;
+    }
+
+    if (pVID) {
+        *pVID = capabilities.VendorId;
+    }
+    if (pPID) {
+        *pPID = capabilities.ProductId;
+    }
+    if (pVersion) {
+        *pVersion = capabilities.ProductVersion;
+    }
+    return true;
+}
+
+int SDL_XINPUT_GetSteamVirtualGamepadSlot(Uint8 userid)
+{
+    SDL_XINPUT_CAPABILITIES_EX capabilities;
+
+    if (XINPUTGETCAPABILITIESEX &&
+        XINPUTGETCAPABILITIESEX(1, userid, 0, &capabilities) == ERROR_SUCCESS &&
+        capabilities.VendorId == USB_VENDOR_VALVE &&
+        capabilities.ProductId == USB_PRODUCT_STEAM_VIRTUAL_GAMEPAD) {
+        return (int)capabilities.unk2;
+    }
+    return -1;
+}
+
+static void AddXInputDevice(Uint8 userid, BYTE SubType, JoyStick_DeviceData **pContext)
+{
+    const char *name = NULL;
+    Uint16 vendor = 0;
+    Uint16 product = 0;
+    Uint16 version = 0;
+    JoyStick_DeviceData *pPrevJoystick = NULL;
+    JoyStick_DeviceData *pNewJoystick = *pContext;
+
+#ifdef SDL_JOYSTICK_RAWINPUT
+    if (RAWINPUT_IsEnabled()) {
+        // The raw input driver handles more than 4 controllers, so prefer that when available
+        /* We do this check here rather than at the top of SDL_XINPUT_JoystickDetect() because
+           we need to check XInput state before RAWINPUT gets a hold of the device, otherwise
+           when a controller is connected via the wireless adapter, it will shut down at the
+           first subsequent XInput call. This seems like a driver stack bug?
+
+           Reference: https://github.com/libsdl-org/SDL/issues/3468
+         */
+        return;
+    }
+#endif
+
+    if (SubType == XINPUT_DEVSUBTYPE_UNKNOWN) {
+        return;
+    }
+
+    while (pNewJoystick) {
+        if (pNewJoystick->bXInputDevice && (pNewJoystick->XInputUserId == userid) && (pNewJoystick->SubType == SubType)) {
+            // if we are replacing the front of the list then update it
+            if (pNewJoystick == *pContext) {
+                *pContext = pNewJoystick->pNext;
+            } else if (pPrevJoystick) {
+                pPrevJoystick->pNext = pNewJoystick->pNext;
+            }
+
+            pNewJoystick->pNext = SYS_Joystick;
+            SYS_Joystick = pNewJoystick;
+            return; // already in the list.
+        }
+
+        pPrevJoystick = pNewJoystick;
+        pNewJoystick = pNewJoystick->pNext;
+    }
+
+    name = GetXInputName(userid, SubType);
+    GetXInputDeviceInfo(userid, &vendor, &product, &version);
+    if (SDL_ShouldIgnoreJoystick(vendor, product, version, name) ||
+        SDL_JoystickHandledByAnotherDriver(&SDL_WINDOWS_JoystickDriver, vendor, product, version, name)) {
+        return;
+    }
+
+    pNewJoystick = (JoyStick_DeviceData *)SDL_calloc(1, sizeof(JoyStick_DeviceData));
+    if (!pNewJoystick) {
+        return; // better luck next time?
+    }
+
+    pNewJoystick->bXInputDevice = true;
+    pNewJoystick->joystickname = SDL_CreateJoystickName(vendor, product, NULL, name);
+    if (!pNewJoystick->joystickname) {
+        SDL_free(pNewJoystick);
+        return; // better luck next time?
+    }
+    (void)SDL_snprintf(pNewJoystick->path, sizeof(pNewJoystick->path), "XInput#%u", userid);
+    pNewJoystick->guid = SDL_CreateJoystickGUID(SDL_HARDWARE_BUS_USB, vendor, product, version, NULL, name, 'x', SubType);
+    pNewJoystick->SubType = SubType;
+    pNewJoystick->XInputUserId = userid;
+
+    WINDOWS_AddJoystickDevice(pNewJoystick);
+}
+
+void SDL_XINPUT_JoystickDetect(JoyStick_DeviceData **pContext)
+{
+    int iuserid;
+
+    if (!s_bXInputEnabled) {
+        return;
+    }
+
+    // iterate in reverse, so these are in the final list in ascending numeric order.
+    for (iuserid = XUSER_MAX_COUNT - 1; iuserid >= 0; iuserid--) {
+        const Uint8 userid = (Uint8)iuserid;
+        XINPUT_CAPABILITIES capabilities;
+        if (XINPUTGETCAPABILITIES(userid, XINPUT_FLAG_GAMEPAD, &capabilities) == ERROR_SUCCESS) {
+            AddXInputDevice(userid, capabilities.SubType, pContext);
+        }
+    }
+}
+
+bool SDL_XINPUT_JoystickPresent(Uint16 vendor, Uint16 product, Uint16 version)
+{
+    int iuserid;
+
+    if (!s_bXInputEnabled) {
+        return false;
+    }
+
+    // iterate in reverse, so these are in the final list in ascending numeric order.
+    for (iuserid = 0; iuserid < XUSER_MAX_COUNT; ++iuserid) {
+        const Uint8 userid = (Uint8)iuserid;
+        Uint16 slot_vendor;
+        Uint16 slot_product;
+        Uint16 slot_version;
+        if (GetXInputDeviceInfo(userid, &slot_vendor, &slot_product, &slot_version)) {
+            if (vendor == slot_vendor && product == slot_product && version == slot_version) {
+                return true;
+            }
+        }
+    }
+    return false;
+}
+
+bool SDL_XINPUT_JoystickOpen(SDL_Joystick *joystick, JoyStick_DeviceData *joystickdevice)
+{
+    const Uint8 userId = joystickdevice->XInputUserId;
+    XINPUT_CAPABILITIES capabilities;
+    XINPUT_VIBRATION state;
+
+    SDL_assert(s_bXInputEnabled);
+    SDL_assert(XINPUTGETCAPABILITIES);
+    SDL_assert(XINPUTSETSTATE);
+    SDL_assert(userId < XUSER_MAX_COUNT);
+
+    joystick->hwdata->bXInputDevice = true;
+
+    if (XINPUTGETCAPABILITIES(userId, XINPUT_FLAG_GAMEPAD, &capabilities) != ERROR_SUCCESS) {
+        SDL_free(joystick->hwdata);
+        joystick->hwdata = NULL;
+        return SDL_SetError("Failed to obtain XInput device capabilities. Device disconnected?");
+    }
+    SDL_zero(state);
+    joystick->hwdata->bXInputHaptic = (XINPUTSETSTATE(userId, &state) == ERROR_SUCCESS);
+    joystick->hwdata->userid = userId;
+
+    // The XInput API has a hard coded button/axis mapping, so we just match it
+    joystick->naxes = 6;
+    joystick->nbuttons = 11;
+    joystick->nhats = 1;
+
+    SDL_SetBooleanProperty(SDL_GetJoystickProperties(joystick), SDL_PROP_JOYSTICK_CAP_RUMBLE_BOOLEAN, true);
+
+    return true;
+}
+
+static void UpdateXInputJoystickBatteryInformation(SDL_Joystick *joystick, XINPUT_BATTERY_INFORMATION_EX *pBatteryInformation)
+{
+    SDL_PowerState state;
+    int percent;
+    switch (pBatteryInformation->BatteryType) {
+    case BATTERY_TYPE_WIRED:
+        state = SDL_POWERSTATE_CHARGING;
+        break;
+    case BATTERY_TYPE_UNKNOWN:
+    case BATTERY_TYPE_DISCONNECTED:
+        state = SDL_POWERSTATE_UNKNOWN;
+        break;
+    default:
+        state = SDL_POWERSTATE_ON_BATTERY;
+        break;
+    }
+    switch (pBatteryInformation->BatteryLevel) {
+    case BATTERY_LEVEL_EMPTY:
+        percent = 10;
+        break;
+    case BATTERY_LEVEL_LOW:
+        percent = 40;
+        break;
+    case BATTERY_LEVEL_MEDIUM:
+        percent = 70;
+        break;
+    default:
+    case BATTERY_LEVEL_FULL:
+        percent = 100;
+        break;
+    }
+    SDL_SendJoystickPowerInfo(joystick, state, percent);
+}
+
+static void UpdateXInputJoystickState(SDL_Joystick *joystick, XINPUT_STATE *pXInputState, XINPUT_BATTERY_INFORMATION_EX *pBatteryInformation)
+{
+    static WORD s_XInputButtons[] = {
+        XINPUT_GAMEPAD_A, XINPUT_GAMEPAD_B, XINPUT_GAMEPAD_X, XINPUT_GAMEPAD_Y,
+        XINPUT_GAMEPAD_LEFT_SHOULDER, XINPUT_GAMEPAD_RIGHT_SHOULDER, XINPUT_GAMEPAD_BACK, XINPUT_GAMEPAD_START,
+        XINPUT_GAMEPAD_LEFT_THUMB, XINPUT_GAMEPAD_RIGHT_THUMB,
+        XINPUT_GAMEPAD_GUIDE
+    };
+    WORD wButtons = pXInputState->Gamepad.wButtons;
+    Uint8 button;
+    Uint8 hat = SDL_HAT_CENTERED;
+    Uint64 timestamp = SDL_GetTicksNS();
+
+    SDL_SendJoystickAxis(timestamp, joystick, 0, pXInputState->Gamepad.sThumbLX);
+    SDL_SendJoystickAxis(timestamp, joystick, 1, ~pXInputState->Gamepad.sThumbLY);
+    SDL_SendJoystickAxis(timestamp, joystick, 2, ((int)pXInputState->Gamepad.bLeftTrigger * 257) - 32768);
+    SDL_SendJoystickAxis(timestamp, joystick, 3, pXInputState->Gamepad.sThumbRX);
+    SDL_SendJoystickAxis(timestamp, joystick, 4, ~pXInputState->Gamepad.sThumbRY);
+    SDL_SendJoystickAxis(timestamp, joystick, 5, ((int)pXInputState->Gamepad.bRightTrigger * 257) - 32768);
+
+    for (button = 0; button < (Uint8)SDL_arraysize(s_XInputButtons); ++button) {
+        bool down = ((wButtons & s_XInputButtons[button]) != 0);
+        SDL_SendJoystickButton(timestamp, joystick, button, down);
+    }
+
+    if (wButtons & XINPUT_GAMEPAD_DPAD_UP) {
+        hat |= SDL_HAT_UP;
+    }
+    if (wButtons & XINPUT_GAMEPAD_DPAD_DOWN) {
+        hat |= SDL_HAT_DOWN;
+    }
+    if (wButtons & XINPUT_GAMEPAD_DPAD_LEFT) {
+        hat |= SDL_HAT_LEFT;
+    }
+    if (wButtons & XINPUT_GAMEPAD_DPAD_RIGHT) {
+        hat |= SDL_HAT_RIGHT;
+    }
+    SDL_SendJoystickHat(timestamp, joystick, 0, hat);
+
+    UpdateXInputJoystickBatteryInformation(joystick, pBatteryInformation);
+}
+
+bool SDL_XINPUT_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
+{
+    XINPUT_VIBRATION XVibration;
+
+    if (!XINPUTSETSTATE) {
+        return SDL_Unsupported();
+    }
+
+    XVibration.wLeftMotorSpeed = low_frequency_rumble;
+    XVibration.wRightMotorSpeed = high_frequency_rumble;
+    if (XINPUTSETSTATE(joystick->hwdata->userid, &XVibration) != ERROR_SUCCESS) {
+        return SDL_SetError("XInputSetState() failed");
+    }
+    return true;
+}
+
+void SDL_XINPUT_JoystickUpdate(SDL_Joystick *joystick)
+{
+    DWORD result;
+    XINPUT_STATE XInputState;
+    XINPUT_BATTERY_INFORMATION_EX XBatteryInformation;
+
+    if (!XINPUTGETSTATE) {
+        return;
+    }
+
+    result = XINPUTGETSTATE(joystick->hwdata->userid, &XInputState);
+    if (result == ERROR_DEVICE_NOT_CONNECTED) {
+        return;
+    }
+
+    SDL_zero(XBatteryInformation);
+    if (XINPUTGETBATTERYINFORMATION) {
+        result = XINPUTGETBATTERYINFORMATION(joystick->hwdata->userid, BATTERY_DEVTYPE_GAMEPAD, &XBatteryInformation);
+    }
+
+#if defined(SDL_PLATFORM_XBOXONE) || defined(SDL_PLATFORM_XBOXSERIES)
+    // XInputOnGameInput doesn't ever change dwPacketNumber, so have to just update every frame
+    UpdateXInputJoystickState(joystick, &XInputState, &XBatteryInformation);
+#else
+    // only fire events if the data changed from last time
+    if (XInputState.dwPacketNumber && XInputState.dwPacketNumber != joystick->hwdata->dwPacketNumber) {
+        UpdateXInputJoystickState(joystick, &XInputState, &XBatteryInformation);
+        joystick->hwdata->dwPacketNumber = XInputState.dwPacketNumber;
+    }
+#endif
+}
+
+void SDL_XINPUT_JoystickClose(SDL_Joystick *joystick)
+{
+}
+
+void SDL_XINPUT_JoystickQuit(void)
+{
+    if (s_bXInputEnabled) {
+        s_bXInputEnabled = false;
+        WIN_UnloadXInputDLL();
+    }
+}
+
+// Ends C function definitions when using C++
+#ifdef __cplusplus
+}
+#endif
+
+#else // !SDL_JOYSTICK_XINPUT
+
+typedef struct JoyStick_DeviceData JoyStick_DeviceData;
+
+bool SDL_XINPUT_Enabled(void)
+{
+    return false;
+}
+
+bool SDL_XINPUT_JoystickInit(void)
+{
+    return true;
+}
+
+void SDL_XINPUT_JoystickDetect(JoyStick_DeviceData **pContext)
+{
+}
+
+bool SDL_XINPUT_JoystickPresent(Uint16 vendor, Uint16 product, Uint16 version)
+{
+    return false;
+}
+
+bool SDL_XINPUT_JoystickOpen(SDL_Joystick *joystick, JoyStick_DeviceData *joystickdevice)
+{
+    return SDL_Unsupported();
+}
+
+bool SDL_XINPUT_JoystickRumble(SDL_Joystick *joystick, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble)
+{
+    return SDL_Unsupported();
+}
+
+void SDL_XINPUT_JoystickUpdate(SDL_Joystick *joystick)
+{
+}
+
+void SDL_XINPUT_JoystickClose(SDL_Joystick *joystick)
+{
+}
+
+void SDL_XINPUT_JoystickQuit(void)
+{
+}
+
+#endif // SDL_JOYSTICK_XINPUT