Mercurial > sdl-ios-xcode
diff src/video/windx5/SDL_dx5video.c @ 1661:281d3f4870e5 SDL-1.3
Moved DirectInput joystick code to 1.3 branch
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Sun, 21 May 2006 17:27:13 +0000 |
parents | 14717b52abc0 |
children | 782fd950bd46 |
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--- a/src/video/windx5/SDL_dx5video.c Sat May 20 04:35:58 2006 +0000 +++ b/src/video/windx5/SDL_dx5video.c Sun May 21 17:27:13 2006 +0000 @@ -436,102 +436,98 @@ extern int DIB_GetGammaRamp(_THIS, Uint16 *ramp); extern void DIB_QuitGamma(_THIS); +/* Functions for loading the DirectX functions dynamically */ +static int DX5_loaded = 0; +static HINSTANCE DDrawDLL = NULL; +static HINSTANCE DInputDLL = NULL; + +void DX5_Unload(void) +{ + if ( --DX5_loaded == 0 ) { + if ( DDrawDLL != NULL ) { + FreeLibrary(DDrawDLL); + DDrawCreate = NULL; + DDrawDLL = NULL; + } + if ( DInputDLL != NULL ) { + FreeLibrary(DInputDLL); + DInputCreate = NULL; + DInputDLL = NULL; + } + } +} +int DX5_Load(void) +{ + int status = 0; + + if ( ++DX5_loaded == 1 ) { + DDrawDLL = LoadLibrary(TEXT("DDRAW.DLL")); + if ( DDrawDLL != NULL ) { + DDrawCreate = (void *)GetProcAddress(DDrawDLL, + TEXT("DirectDrawCreate")); + } + DInputDLL = LoadLibrary(TEXT("DINPUT.DLL")); + if ( DInputDLL != NULL ) { + DInputCreate = (void *)GetProcAddress(DInputDLL, + TEXT("DirectInputCreateA")); + } + if ( DDrawDLL && DDrawCreate && DInputDLL && DInputCreate ) { + status = 0; + } else { + DX5_Unload(); + status = -1; + } + } + return status; +} + /* DX5 driver bootstrap functions */ static int DX5_Available(void) { - HINSTANCE DInputDLL; - HINSTANCE DDrawDLL; - int dinput_ok; - int ddraw_ok; + int ddraw_ok = 0; + HRESULT (WINAPI *DDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *); + LPDIRECTDRAW DDraw; /* Version check DINPUT.DLL and DDRAW.DLL (Is DirectX okay?) */ - dinput_ok = 0; - DInputDLL = LoadLibrary(TEXT("DINPUT.DLL")); - if ( DInputDLL != NULL ) { - dinput_ok = 1; - FreeLibrary(DInputDLL); + if ( DX5_Load() < 0 ) { + return -1; } - ddraw_ok = 0; - DDrawDLL = LoadLibrary(TEXT("DDRAW.DLL")); - if ( DDrawDLL != NULL ) { - HRESULT (WINAPI *DDrawCreate)(GUID *,LPDIRECTDRAW *,IUnknown *); - LPDIRECTDRAW DDraw; - /* Try to create a valid DirectDraw object */ - DDrawCreate = (void *)GetProcAddress(DDrawDLL, TEXT("DirectDrawCreate")); - if ( (DDrawCreate != NULL) + /* Try to create a valid DirectDraw object */ + DDrawCreate = (void *)GetProcAddress(DDrawDLL, TEXT("DirectDrawCreate")); + if ( (DDrawCreate != NULL) && !FAILED(DDrawCreate(NULL, &DDraw, NULL)) ) { - if ( !FAILED(IDirectDraw_SetCooperativeLevel(DDraw, + if ( !FAILED(IDirectDraw_SetCooperativeLevel(DDraw, NULL, DDSCL_NORMAL)) ) { - DDSURFACEDESC desc; - LPDIRECTDRAWSURFACE DDrawSurf; - LPDIRECTDRAWSURFACE3 DDrawSurf3; - - /* Try to create a DirectDrawSurface3 object */ - SDL_memset(&desc, 0, sizeof(desc)); - desc.dwSize = sizeof(desc); - desc.dwFlags = DDSD_CAPS; - desc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE|DDSCAPS_VIDEOMEMORY; - if ( !FAILED(IDirectDraw_CreateSurface(DDraw, &desc, - &DDrawSurf, NULL)) ) { - if ( !FAILED(IDirectDrawSurface_QueryInterface(DDrawSurf, - &IID_IDirectDrawSurface3, (LPVOID *)&DDrawSurf3)) ) { - /* Yay! */ - ddraw_ok = 1; + DDSURFACEDESC desc; + LPDIRECTDRAWSURFACE DDrawSurf; + LPDIRECTDRAWSURFACE3 DDrawSurf3; - /* Clean up.. */ - IDirectDrawSurface3_Release(DDrawSurf3); - } - IDirectDrawSurface_Release(DDrawSurf); - } - } - IDirectDraw_Release(DDraw); - } - FreeLibrary(DDrawDLL); - } - return(dinput_ok && ddraw_ok); -} - -/* Functions for loading the DirectX functions dynamically */ -static HINSTANCE DDrawDLL = NULL; -static HINSTANCE DInputDLL = NULL; + /* Try to create a DirectDrawSurface3 object */ + SDL_memset(&desc, 0, sizeof(desc)); + desc.dwSize = sizeof(desc); + desc.dwFlags = DDSD_CAPS; + desc.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE|DDSCAPS_VIDEOMEMORY; + if ( !FAILED(IDirectDraw_CreateSurface(DDraw, &desc, + &DDrawSurf, NULL)) ) { + if ( !FAILED(IDirectDrawSurface_QueryInterface(DDrawSurf, + &IID_IDirectDrawSurface3, (LPVOID *)&DDrawSurf3)) ) { + /* Yay! */ + ddraw_ok = 1; -static void DX5_Unload(void) -{ - if ( DDrawDLL != NULL ) { - FreeLibrary(DDrawDLL); - DDrawCreate = NULL; - DDrawDLL = NULL; + /* Clean up.. */ + IDirectDrawSurface3_Release(DDrawSurf3); + } + IDirectDrawSurface_Release(DDrawSurf); + } + } + IDirectDraw_Release(DDraw); } - if ( DInputDLL != NULL ) { - FreeLibrary(DInputDLL); - DInputCreate = NULL; - DInputDLL = NULL; - } -} -static int DX5_Load(void) -{ - int status; DX5_Unload(); - DDrawDLL = LoadLibrary(TEXT("DDRAW.DLL")); - if ( DDrawDLL != NULL ) { - DDrawCreate = (void *)GetProcAddress(DDrawDLL, - TEXT("DirectDrawCreate")); - } - DInputDLL = LoadLibrary(TEXT("DINPUT.DLL")); - if ( DInputDLL != NULL ) { - DInputCreate = (void *)GetProcAddress(DInputDLL, - TEXT("DirectInputCreateA")); - } - if ( DDrawDLL && DDrawCreate && DInputDLL && DInputCreate ) { - status = 0; - } else { - DX5_Unload(); - status = -1; - } - return status; + + return ddraw_ok; } static void DX5_DeleteDevice(SDL_VideoDevice *this) @@ -541,6 +537,7 @@ IDirectDraw2_Release(ddraw2); } DX5_Unload(); + if ( this ) { if ( this->hidden ) { SDL_free(this->hidden);