Initial commit

1 files changed, 262 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/windows/SDL_windowsrawinput.c b/contrib/SDL-3.2.8/src/video/windows/SDL_windowsrawinput.c
new file mode 100644
index 0000000..fa24991
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/windows/SDL_windowsrawinput.c
@@ -0,0 +1,262 @@
+/*
+  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"
+
+#if defined(SDL_VIDEO_DRIVER_WINDOWS)
+
+#include "SDL_windowsvideo.h"
+
+#if !defined(SDL_PLATFORM_XBOXONE) && !defined(SDL_PLATFORM_XBOXSERIES)
+
+#include "SDL_windowsevents.h"
+
+#include "../../joystick/usb_ids.h"
+#include "../../events/SDL_events_c.h"
+
+#define ENABLE_RAW_MOUSE_INPUT      0x01
+#define ENABLE_RAW_KEYBOARD_INPUT   0x02
+
+typedef struct
+{
+    bool done;
+    Uint32 flags;
+    HANDLE ready_event;
+    HANDLE done_event;
+    HANDLE thread;
+} RawInputThreadData;
+
+static RawInputThreadData thread_data = {
+    false,
+    0,
+    INVALID_HANDLE_VALUE,
+    INVALID_HANDLE_VALUE,
+    INVALID_HANDLE_VALUE
+};
+
+static DWORD WINAPI WIN_RawInputThread(LPVOID param)
+{
+    SDL_VideoDevice *_this = SDL_GetVideoDevice();
+    RawInputThreadData *data = (RawInputThreadData *)param;
+    RAWINPUTDEVICE devices[2];
+    HWND window;
+    UINT count = 0;
+
+    window = CreateWindowEx(0, TEXT("Message"), NULL, 0, 0, 0, 0, 0, HWND_MESSAGE, NULL, NULL, NULL);
+    if (!window) {
+        return 0;
+    }
+
+    SDL_zeroa(devices);
+
+    if (data->flags & ENABLE_RAW_MOUSE_INPUT) {
+        devices[count].usUsagePage = USB_USAGEPAGE_GENERIC_DESKTOP;
+        devices[count].usUsage = USB_USAGE_GENERIC_MOUSE;
+        devices[count].dwFlags = 0;
+        devices[count].hwndTarget = window;
+        ++count;
+    }
+
+    if (data->flags & ENABLE_RAW_KEYBOARD_INPUT) {
+        devices[count].usUsagePage = USB_USAGEPAGE_GENERIC_DESKTOP;
+        devices[count].usUsage = USB_USAGE_GENERIC_KEYBOARD;
+        devices[count].dwFlags = 0;
+        devices[count].hwndTarget = window;
+        ++count;
+    }
+
+    if (!RegisterRawInputDevices(devices, count, sizeof(devices[0]))) {
+        DestroyWindow(window);
+        return 0;
+    }
+
+    // Make sure we get events as soon as possible
+    SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_TIME_CRITICAL);
+
+    // Tell the parent we're ready to go!
+    SetEvent(data->ready_event);
+
+    while (!data->done) {
+        Uint64 idle_begin = SDL_GetTicksNS();
+        DWORD result = MsgWaitForMultipleObjects(1, &data->done_event, FALSE, INFINITE, QS_RAWINPUT);
+        Uint64 idle_end = SDL_GetTicksNS();
+        if (result != (WAIT_OBJECT_0 + 1)) {
+            break;
+        }
+
+        // Clear the queue status so MsgWaitForMultipleObjects() will wait again
+        (void)GetQueueStatus(QS_RAWINPUT);
+
+        Uint64 idle_time = idle_end - idle_begin;
+        Uint64 usb_8khz_interval = SDL_US_TO_NS(125);
+        Uint64 poll_start = idle_time < usb_8khz_interval ? _this->internal->last_rawinput_poll : idle_end;
+
+        WIN_PollRawInput(_this, poll_start);
+    }
+
+    devices[0].dwFlags |= RIDEV_REMOVE;
+    devices[1].dwFlags |= RIDEV_REMOVE;
+    RegisterRawInputDevices(devices, count, sizeof(devices[0]));
+
+    DestroyWindow(window);
+
+    return 0;
+}
+
+static void CleanupRawInputThreadData(RawInputThreadData *data)
+{
+    if (data->thread != INVALID_HANDLE_VALUE) {
+        data->done = true;
+        SetEvent(data->done_event);
+        WaitForSingleObject(data->thread, 3000);
+        CloseHandle(data->thread);
+        data->thread = INVALID_HANDLE_VALUE;
+    }
+
+    if (data->ready_event != INVALID_HANDLE_VALUE) {
+        CloseHandle(data->ready_event);
+        data->ready_event = INVALID_HANDLE_VALUE;
+    }
+
+    if (data->done_event != INVALID_HANDLE_VALUE) {
+        CloseHandle(data->done_event);
+        data->done_event = INVALID_HANDLE_VALUE;
+    }
+}
+
+static bool WIN_SetRawInputEnabled(SDL_VideoDevice *_this, Uint32 flags)
+{
+    bool result = false;
+
+    CleanupRawInputThreadData(&thread_data);
+
+    if (flags) {
+        HANDLE handles[2];
+
+        thread_data.flags = flags;
+        thread_data.ready_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+        if (thread_data.ready_event == INVALID_HANDLE_VALUE) {
+            WIN_SetError("CreateEvent");
+            goto done;
+        }
+
+        thread_data.done = false;
+        thread_data.done_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+        if (thread_data.done_event == INVALID_HANDLE_VALUE) {
+            WIN_SetError("CreateEvent");
+            goto done;
+        }
+
+        thread_data.thread = CreateThread(NULL, 0, WIN_RawInputThread, &thread_data, 0, NULL);
+        if (thread_data.thread == INVALID_HANDLE_VALUE) {
+            WIN_SetError("CreateThread");
+            goto done;
+        }
+
+        // Wait for the thread to signal ready or exit
+        handles[0] = thread_data.ready_event;
+        handles[1] = thread_data.thread;
+        if (WaitForMultipleObjects(2, handles, FALSE, INFINITE) != WAIT_OBJECT_0) {
+            SDL_SetError("Couldn't set up raw input handling");
+            goto done;
+        }
+        result = true;
+    } else {
+        result = true;
+    }
+
+done:
+    if (!result) {
+        CleanupRawInputThreadData(&thread_data);
+    }
+    return result;
+}
+
+static bool WIN_UpdateRawInputEnabled(SDL_VideoDevice *_this)
+{
+    SDL_VideoData *data = _this->internal;
+    Uint32 flags = 0;
+    if (data->raw_mouse_enabled) {
+        flags |= ENABLE_RAW_MOUSE_INPUT;
+    }
+    if (data->raw_keyboard_enabled) {
+        flags |= ENABLE_RAW_KEYBOARD_INPUT;
+    }
+    if (flags != data->raw_input_enabled) {
+        if (WIN_SetRawInputEnabled(_this, flags)) {
+            data->raw_input_enabled = flags;
+        } else {
+            return false;
+        }
+    }
+    return true;
+}
+
+bool WIN_SetRawMouseEnabled(SDL_VideoDevice *_this, bool enabled)
+{
+    SDL_VideoData *data = _this->internal;
+    data->raw_mouse_enabled = enabled;
+    if (data->gameinput_context) {
+        if (!WIN_UpdateGameInputEnabled(_this)) {
+            data->raw_mouse_enabled = !enabled;
+            return false;
+        }
+    } else {
+        if (!WIN_UpdateRawInputEnabled(_this)) {
+            data->raw_mouse_enabled = !enabled;
+            return false;
+        }
+    }
+    return true;
+}
+
+bool WIN_SetRawKeyboardEnabled(SDL_VideoDevice *_this, bool enabled)
+{
+    SDL_VideoData *data = _this->internal;
+    data->raw_keyboard_enabled = enabled;
+    if (data->gameinput_context) {
+        if (!WIN_UpdateGameInputEnabled(_this)) {
+            data->raw_keyboard_enabled = !enabled;
+            return false;
+        }
+    } else {
+        if (!WIN_UpdateRawInputEnabled(_this)) {
+            data->raw_keyboard_enabled = !enabled;
+            return false;
+        }
+    }
+    return true;
+}
+
+#else
+
+bool WIN_SetRawMouseEnabled(SDL_VideoDevice *_this, bool enabled)
+{
+    return SDL_Unsupported();
+}
+
+bool WIN_SetRawKeyboardEnabled(SDL_VideoDevice *_this, bool enabled)
+{
+    return SDL_Unsupported();
+}
+
+#endif // !SDL_PLATFORM_XBOXONE && !SDL_PLATFORM_XBOXSERIES
+
+#endif // SDL_VIDEO_DRIVER_WINDOWS