mirror of
https://github.com/encounter/SDL.git
synced 2025-06-06 14:43:28 +00:00
95 lines
3.0 KiB
C
95 lines
3.0 KiB
C
/*
|
|
Simple DirectMedia Layer
|
|
Copyright (C) 1997-2014 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_assert.h"
|
|
#include "SDL_xinput.h"
|
|
|
|
|
|
#ifdef HAVE_XINPUT_H
|
|
|
|
XInputGetState_t SDL_XInputGetState = NULL;
|
|
XInputSetState_t SDL_XInputSetState = NULL;
|
|
XInputGetCapabilities_t SDL_XInputGetCapabilities = NULL;
|
|
DWORD SDL_XInputVersion = 0;
|
|
|
|
static HANDLE s_pXInputDLL = 0;
|
|
static int s_XInputDLLRefCount = 0;
|
|
|
|
|
|
int
|
|
WIN_LoadXInputDLL(void)
|
|
{
|
|
DWORD version = 0;
|
|
|
|
if (s_pXInputDLL) {
|
|
SDL_assert(s_XInputDLLRefCount > 0);
|
|
s_XInputDLLRefCount++;
|
|
return 0; /* already loaded */
|
|
}
|
|
|
|
version = (1 << 16) | 4;
|
|
s_pXInputDLL = LoadLibrary(L"XInput1_4.dll"); /* 1.4 Ships with Windows 8. */
|
|
if (!s_pXInputDLL) {
|
|
version = (1 << 16) | 3;
|
|
s_pXInputDLL = LoadLibrary(L"XInput1_3.dll"); /* 1.3 Ships with Vista and Win7, can be installed as a redistributable component. */
|
|
}
|
|
if (!s_pXInputDLL) {
|
|
s_pXInputDLL = LoadLibrary(L"bin\\XInput1_3.dll");
|
|
}
|
|
if (!s_pXInputDLL) {
|
|
return -1;
|
|
}
|
|
|
|
SDL_assert(s_XInputDLLRefCount == 0);
|
|
SDL_XInputVersion = version;
|
|
s_XInputDLLRefCount = 1;
|
|
|
|
/* 100 is the ordinal for _XInputGetStateEx, which returns the same struct as XinputGetState, but with extra data in wButtons for the guide button, we think... */
|
|
SDL_XInputGetState = (XInputGetState_t)GetProcAddress((HMODULE)s_pXInputDLL, (LPCSTR)100);
|
|
SDL_XInputSetState = (XInputSetState_t)GetProcAddress((HMODULE)s_pXInputDLL, "XInputSetState");
|
|
SDL_XInputGetCapabilities = (XInputGetCapabilities_t)GetProcAddress((HMODULE)s_pXInputDLL, "XInputGetCapabilities");
|
|
if (!SDL_XInputGetState || !SDL_XInputSetState || !SDL_XInputGetCapabilities) {
|
|
WIN_UnloadXInputDLL();
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
WIN_UnloadXInputDLL(void)
|
|
{
|
|
if (s_pXInputDLL) {
|
|
SDL_assert(s_XInputDLLRefCount > 0);
|
|
if (--s_XInputDLLRefCount == 0) {
|
|
FreeLibrary(s_pXInputDLL);
|
|
s_pXInputDLL = NULL;
|
|
}
|
|
} else {
|
|
SDL_assert(s_XInputDLLRefCount == 0);
|
|
}
|
|
}
|
|
|
|
#endif /* HAVE_XINPUT_H */
|
|
|
|
/* vi: set ts=4 sw=4 expandtab: */
|