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99 lines
3.1 KiB
C
99 lines
3.1 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifdef HAVE_GAMEINPUT_H
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#include "SDL_windows.h"
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#include "SDL_gameinput.h"
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#ifdef SDL_PLATFORM_WIN32
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#include <initguid.h>
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// {11BE2A7E-4254-445A-9C09-FFC40F006918}
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DEFINE_GUID(SDL_IID_GameInput, 0x11BE2A7E, 0x4254, 0x445A, 0x9C, 0x09, 0xFF, 0xC4, 0x0F, 0x00, 0x69, 0x18);
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#endif
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static SDL_SharedObject *g_hGameInputDLL;
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static IGameInput *g_pGameInput;
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static int g_nGameInputRefCount;
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bool SDL_InitGameInput(IGameInput **ppGameInput)
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{
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if (g_nGameInputRefCount == 0) {
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g_hGameInputDLL = SDL_LoadObject("gameinput.dll");
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if (!g_hGameInputDLL) {
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return false;
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}
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typedef HRESULT (WINAPI *GameInputCreate_t)(IGameInput * *gameInput);
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GameInputCreate_t GameInputCreateFunc = (GameInputCreate_t)SDL_LoadFunction(g_hGameInputDLL, "GameInputCreate");
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if (!GameInputCreateFunc) {
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SDL_UnloadObject(g_hGameInputDLL);
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return false;
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}
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IGameInput *pGameInput = NULL;
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HRESULT hr = GameInputCreateFunc(&pGameInput);
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if (FAILED(hr)) {
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SDL_UnloadObject(g_hGameInputDLL);
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return WIN_SetErrorFromHRESULT("GameInputCreate failed", hr);
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}
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#ifdef SDL_PLATFORM_WIN32
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hr = IGameInput_QueryInterface(pGameInput, &SDL_IID_GameInput, (void **)&g_pGameInput);
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IGameInput_Release(pGameInput);
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if (FAILED(hr)) {
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SDL_UnloadObject(g_hGameInputDLL);
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return WIN_SetErrorFromHRESULT("GameInput QueryInterface failed", hr);
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}
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#else
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// Assume that the version we get is compatible with the current SDK
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// If that isn't the case, define the correct GUID for SDL_IID_GameInput above
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g_pGameInput = pGameInput;
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#endif
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}
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++g_nGameInputRefCount;
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if (ppGameInput) {
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*ppGameInput = g_pGameInput;
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}
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return true;
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}
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void SDL_QuitGameInput(void)
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{
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SDL_assert(g_nGameInputRefCount > 0);
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--g_nGameInputRefCount;
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if (g_nGameInputRefCount == 0) {
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if (g_pGameInput) {
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IGameInput_Release(g_pGameInput);
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g_pGameInput = NULL;
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}
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if (g_hGameInputDLL) {
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SDL_UnloadObject(g_hGameInputDLL);
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g_hGameInputDLL = NULL;
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}
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}
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}
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#endif // HAVE_GAMEINPUT_H
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