1 files changed, 254 insertions, 0 deletions

diff --git a/SDL-3.2.8/src/core/windows/SDL_hid.c b/SDL-3.2.8/src/core/windows/SDL_hid.c
new file mode 100644
index 0000000..87e8735
--- /dev/null
+++ b/SDL-3.2.8/src/core/windows/SDL_hid.c
@@ -0,0 +1,254 @@
+/*
+  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_hid.h"
+
+HidD_GetAttributes_t SDL_HidD_GetAttributes;
+HidD_GetString_t SDL_HidD_GetManufacturerString;
+HidD_GetString_t SDL_HidD_GetProductString;
+HidP_GetCaps_t SDL_HidP_GetCaps;
+HidP_GetButtonCaps_t SDL_HidP_GetButtonCaps;
+HidP_GetValueCaps_t SDL_HidP_GetValueCaps;
+HidP_MaxDataListLength_t SDL_HidP_MaxDataListLength;
+HidP_GetData_t SDL_HidP_GetData;
+
+static HMODULE s_pHIDDLL = 0;
+static int s_HIDDLLRefCount = 0;
+
+
+bool WIN_LoadHIDDLL(void)
+{
+    if (s_pHIDDLL) {
+        SDL_assert(s_HIDDLLRefCount > 0);
+        s_HIDDLLRefCount++;
+        return true; // already loaded
+    }
+
+    s_pHIDDLL = LoadLibrary(TEXT("hid.dll"));
+    if (!s_pHIDDLL) {
+        return false;
+    }
+
+    SDL_assert(s_HIDDLLRefCount == 0);
+    s_HIDDLLRefCount = 1;
+
+    SDL_HidD_GetAttributes = (HidD_GetAttributes_t)GetProcAddress(s_pHIDDLL, "HidD_GetAttributes");
+    SDL_HidD_GetManufacturerString = (HidD_GetString_t)GetProcAddress(s_pHIDDLL, "HidD_GetManufacturerString");
+    SDL_HidD_GetProductString = (HidD_GetString_t)GetProcAddress(s_pHIDDLL, "HidD_GetProductString");
+    SDL_HidP_GetCaps = (HidP_GetCaps_t)GetProcAddress(s_pHIDDLL, "HidP_GetCaps");
+    SDL_HidP_GetButtonCaps = (HidP_GetButtonCaps_t)GetProcAddress(s_pHIDDLL, "HidP_GetButtonCaps");
+    SDL_HidP_GetValueCaps = (HidP_GetValueCaps_t)GetProcAddress(s_pHIDDLL, "HidP_GetValueCaps");
+    SDL_HidP_MaxDataListLength = (HidP_MaxDataListLength_t)GetProcAddress(s_pHIDDLL, "HidP_MaxDataListLength");
+    SDL_HidP_GetData = (HidP_GetData_t)GetProcAddress(s_pHIDDLL, "HidP_GetData");
+    if (!SDL_HidD_GetManufacturerString || !SDL_HidD_GetProductString ||
+        !SDL_HidP_GetCaps || !SDL_HidP_GetButtonCaps ||
+        !SDL_HidP_GetValueCaps || !SDL_HidP_MaxDataListLength || !SDL_HidP_GetData) {
+        WIN_UnloadHIDDLL();
+        return false;
+    }
+
+    return true;
+}
+
+void WIN_UnloadHIDDLL(void)
+{
+    if (s_pHIDDLL) {
+        SDL_assert(s_HIDDLLRefCount > 0);
+        if (--s_HIDDLLRefCount == 0) {
+            FreeLibrary(s_pHIDDLL);
+            s_pHIDDLL = NULL;
+        }
+    } else {
+        SDL_assert(s_HIDDLLRefCount == 0);
+    }
+}
+
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
+
+// CM_Register_Notification definitions
+
+#define CR_SUCCESS 0
+
+DECLARE_HANDLE(HCMNOTIFICATION);
+typedef HCMNOTIFICATION *PHCMNOTIFICATION;
+
+typedef enum _CM_NOTIFY_FILTER_TYPE
+{
+    CM_NOTIFY_FILTER_TYPE_DEVICEINTERFACE = 0,
+    CM_NOTIFY_FILTER_TYPE_DEVICEHANDLE,
+    CM_NOTIFY_FILTER_TYPE_DEVICEINSTANCE,
+    CM_NOTIFY_FILTER_TYPE_MAX
+} CM_NOTIFY_FILTER_TYPE, *PCM_NOTIFY_FILTER_TYPE;
+
+typedef struct _CM_NOTIFY_FILTER
+{
+    DWORD cbSize;
+    DWORD Flags;
+    CM_NOTIFY_FILTER_TYPE FilterType;
+    DWORD Reserved;
+    union
+    {
+        struct
+        {
+            GUID ClassGuid;
+        } DeviceInterface;
+        struct
+        {
+            HANDLE hTarget;
+        } DeviceHandle;
+        struct
+        {
+            WCHAR InstanceId[200];
+        } DeviceInstance;
+    } u;
+} CM_NOTIFY_FILTER, *PCM_NOTIFY_FILTER;
+
+typedef enum _CM_NOTIFY_ACTION
+{
+    CM_NOTIFY_ACTION_DEVICEINTERFACEARRIVAL = 0,
+    CM_NOTIFY_ACTION_DEVICEINTERFACEREMOVAL,
+    CM_NOTIFY_ACTION_DEVICEQUERYREMOVE,
+    CM_NOTIFY_ACTION_DEVICEQUERYREMOVEFAILED,
+    CM_NOTIFY_ACTION_DEVICEREMOVEPENDING,
+    CM_NOTIFY_ACTION_DEVICEREMOVECOMPLETE,
+    CM_NOTIFY_ACTION_DEVICECUSTOMEVENT,
+    CM_NOTIFY_ACTION_DEVICEINSTANCEENUMERATED,
+    CM_NOTIFY_ACTION_DEVICEINSTANCESTARTED,
+    CM_NOTIFY_ACTION_DEVICEINSTANCEREMOVED,
+    CM_NOTIFY_ACTION_MAX
+} CM_NOTIFY_ACTION, *PCM_NOTIFY_ACTION;
+
+typedef struct _CM_NOTIFY_EVENT_DATA
+{
+    CM_NOTIFY_FILTER_TYPE FilterType;
+    DWORD Reserved;
+    union
+    {
+        struct
+        {
+            GUID ClassGuid;
+            WCHAR SymbolicLink[ANYSIZE_ARRAY];
+        } DeviceInterface;
+        struct
+        {
+            GUID EventGuid;
+            LONG NameOffset;
+            DWORD DataSize;
+            BYTE Data[ANYSIZE_ARRAY];
+        } DeviceHandle;
+        struct
+        {
+            WCHAR InstanceId[ANYSIZE_ARRAY];
+        } DeviceInstance;
+    } u;
+} CM_NOTIFY_EVENT_DATA, *PCM_NOTIFY_EVENT_DATA;
+
+typedef DWORD (CALLBACK *PCM_NOTIFY_CALLBACK)(HCMNOTIFICATION hNotify, PVOID Context, CM_NOTIFY_ACTION Action, PCM_NOTIFY_EVENT_DATA EventData, DWORD EventDataSize);
+
+typedef DWORD (WINAPI *CM_Register_NotificationFunc)(PCM_NOTIFY_FILTER pFilter, PVOID pContext, PCM_NOTIFY_CALLBACK pCallback, PHCMNOTIFICATION pNotifyContext);
+typedef DWORD (WINAPI *CM_Unregister_NotificationFunc)(HCMNOTIFICATION NotifyContext);
+
+static GUID GUID_DEVINTERFACE_HID = { 0x4D1E55B2L, 0xF16F, 0x11CF, { 0x88, 0xCB, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30 } };
+
+static int s_DeviceNotificationsRequested;
+static HMODULE cfgmgr32_lib_handle;
+static CM_Register_NotificationFunc CM_Register_Notification;
+static CM_Unregister_NotificationFunc CM_Unregister_Notification;
+static HCMNOTIFICATION s_DeviceNotificationFuncHandle;
+static Uint64 s_LastDeviceNotification = 1;
+
+static DWORD CALLBACK SDL_DeviceNotificationFunc(HCMNOTIFICATION hNotify, PVOID context, CM_NOTIFY_ACTION action, PCM_NOTIFY_EVENT_DATA eventData, DWORD event_data_size)
+{
+    if (action == CM_NOTIFY_ACTION_DEVICEINTERFACEARRIVAL ||
+        action == CM_NOTIFY_ACTION_DEVICEINTERFACEREMOVAL) {
+        s_LastDeviceNotification = SDL_GetTicksNS();
+    }
+    return ERROR_SUCCESS;
+}
+
+void WIN_InitDeviceNotification(void)
+{
+    ++s_DeviceNotificationsRequested;
+    if (s_DeviceNotificationsRequested > 1) {
+        return;
+    }
+
+    cfgmgr32_lib_handle = LoadLibraryA("cfgmgr32.dll");
+    if (cfgmgr32_lib_handle) {
+        CM_Register_Notification = (CM_Register_NotificationFunc)GetProcAddress(cfgmgr32_lib_handle, "CM_Register_Notification");
+        CM_Unregister_Notification = (CM_Unregister_NotificationFunc)GetProcAddress(cfgmgr32_lib_handle, "CM_Unregister_Notification");
+        if (CM_Register_Notification && CM_Unregister_Notification) {
+            CM_NOTIFY_FILTER notify_filter;
+
+            SDL_zero(notify_filter);
+            notify_filter.cbSize = sizeof(notify_filter);
+            notify_filter.FilterType = CM_NOTIFY_FILTER_TYPE_DEVICEINTERFACE;
+            notify_filter.u.DeviceInterface.ClassGuid = GUID_DEVINTERFACE_HID;
+            if (CM_Register_Notification(&notify_filter, NULL, SDL_DeviceNotificationFunc, &s_DeviceNotificationFuncHandle) == CR_SUCCESS) {
+                return;
+            }
+        }
+    }
+
+    // FIXME: Should we log errors?
+}
+
+Uint64 WIN_GetLastDeviceNotification(void)
+{
+    return s_LastDeviceNotification;
+}
+
+void WIN_QuitDeviceNotification(void)
+{
+    if (--s_DeviceNotificationsRequested > 0) {
+        return;
+    }
+    // Make sure we have balanced calls to init/quit
+    SDL_assert(s_DeviceNotificationsRequested == 0);
+
+    if (cfgmgr32_lib_handle) {
+        if (s_DeviceNotificationFuncHandle && CM_Unregister_Notification) {
+            CM_Unregister_Notification(s_DeviceNotificationFuncHandle);
+            s_DeviceNotificationFuncHandle = NULL;
+        }
+
+        FreeLibrary(cfgmgr32_lib_handle);
+        cfgmgr32_lib_handle = NULL;
+    }
+}
+
+#else
+
+void WIN_InitDeviceNotification(void)
+{
+}
+
+Uint64 WIN_GetLastDeviceNotification( void )
+{
+    return 0;
+}
+
+void WIN_QuitDeviceNotification(void)
+{
+}
+
+#endif // !SDL_PLATFORM_XBOXONE && !SDL_PLATFORM_XBOXSERIES