diff options
Diffstat (limited to '3rdparty/SDL2/src/SDL.c')
-rw-r--r-- | 3rdparty/SDL2/src/SDL.c | 477 |
1 files changed, 477 insertions, 0 deletions
diff --git a/3rdparty/SDL2/src/SDL.c b/3rdparty/SDL2/src/SDL.c new file mode 100644 index 00000000000..5d310021a50 --- /dev/null +++ b/3rdparty/SDL2/src/SDL.c @@ -0,0 +1,477 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2016 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(__WIN32__) +#include "core/windows/SDL_windows.h" +#endif + +/* Initialization code for SDL */ + +#include "SDL.h" +#include "SDL_bits.h" +#include "SDL_revision.h" +#include "SDL_assert_c.h" +#include "events/SDL_events_c.h" +#include "haptic/SDL_haptic_c.h" +#include "joystick/SDL_joystick_c.h" + +/* Initialization/Cleanup routines */ +#if !SDL_TIMERS_DISABLED +extern int SDL_TimerInit(void); +extern void SDL_TimerQuit(void); +extern void SDL_TicksInit(void); +extern void SDL_TicksQuit(void); +#endif +#if SDL_VIDEO_DRIVER_WINDOWS +extern int SDL_HelperWindowCreate(void); +extern int SDL_HelperWindowDestroy(void); +#endif + + +/* The initialized subsystems */ +#ifdef SDL_MAIN_NEEDED +static SDL_bool SDL_MainIsReady = SDL_FALSE; +#else +static SDL_bool SDL_MainIsReady = SDL_TRUE; +#endif +static SDL_bool SDL_bInMainQuit = SDL_FALSE; +static Uint8 SDL_SubsystemRefCount[ 32 ]; + +/* Private helper to increment a subsystem's ref counter. */ +static void +SDL_PrivateSubsystemRefCountIncr(Uint32 subsystem) +{ + int subsystem_index = SDL_MostSignificantBitIndex32(subsystem); + SDL_assert(SDL_SubsystemRefCount[subsystem_index] < 255); + ++SDL_SubsystemRefCount[subsystem_index]; +} + +/* Private helper to decrement a subsystem's ref counter. */ +static void +SDL_PrivateSubsystemRefCountDecr(Uint32 subsystem) +{ + int subsystem_index = SDL_MostSignificantBitIndex32(subsystem); + if (SDL_SubsystemRefCount[subsystem_index] > 0) { + --SDL_SubsystemRefCount[subsystem_index]; + } +} + +/* Private helper to check if a system needs init. */ +static SDL_bool +SDL_PrivateShouldInitSubsystem(Uint32 subsystem) +{ + int subsystem_index = SDL_MostSignificantBitIndex32(subsystem); + SDL_assert(SDL_SubsystemRefCount[subsystem_index] < 255); + return (SDL_SubsystemRefCount[subsystem_index] == 0); +} + +/* Private helper to check if a system needs to be quit. */ +static SDL_bool +SDL_PrivateShouldQuitSubsystem(Uint32 subsystem) { + int subsystem_index = SDL_MostSignificantBitIndex32(subsystem); + if (SDL_SubsystemRefCount[subsystem_index] == 0) { + return SDL_FALSE; + } + + /* If we're in SDL_Quit, we shut down every subsystem, even if refcount + * isn't zero. + */ + return SDL_SubsystemRefCount[subsystem_index] == 1 || SDL_bInMainQuit; +} + +void +SDL_SetMainReady(void) +{ + SDL_MainIsReady = SDL_TRUE; +} + +int +SDL_InitSubSystem(Uint32 flags) +{ + if (!SDL_MainIsReady) { + SDL_SetError("Application didn't initialize properly, did you include SDL_main.h in the file containing your main() function?"); + return -1; + } + + /* Clear the error message */ + SDL_ClearError(); + +#if SDL_VIDEO_DRIVER_WINDOWS + if ((flags & (SDL_INIT_HAPTIC|SDL_INIT_JOYSTICK))) { + if (SDL_HelperWindowCreate() < 0) { + return -1; + } + } +#endif + +#if !SDL_TIMERS_DISABLED + SDL_TicksInit(); +#endif + + if ((flags & SDL_INIT_GAMECONTROLLER)) { + /* game controller implies joystick */ + flags |= SDL_INIT_JOYSTICK; + } + + if ((flags & (SDL_INIT_VIDEO|SDL_INIT_JOYSTICK))) { + /* video or joystick implies events */ + flags |= SDL_INIT_EVENTS; + } + + /* Initialize the event subsystem */ + if ((flags & SDL_INIT_EVENTS)) { +#if !SDL_EVENTS_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_EVENTS)) { + if (SDL_StartEventLoop() < 0) { + return (-1); + } + SDL_QuitInit(); + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_EVENTS); +#else + return SDL_SetError("SDL not built with events support"); +#endif + } + + /* Initialize the timer subsystem */ + if ((flags & SDL_INIT_TIMER)){ +#if !SDL_TIMERS_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_TIMER)) { + if (SDL_TimerInit() < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_TIMER); +#else + return SDL_SetError("SDL not built with timer support"); +#endif + } + + /* Initialize the video subsystem */ + if ((flags & SDL_INIT_VIDEO)){ +#if !SDL_VIDEO_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_VIDEO)) { + if (SDL_VideoInit(NULL) < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_VIDEO); +#else + return SDL_SetError("SDL not built with video support"); +#endif + } + + /* Initialize the audio subsystem */ + if ((flags & SDL_INIT_AUDIO)){ +#if !SDL_AUDIO_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_AUDIO)) { + if (SDL_AudioInit(NULL) < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_AUDIO); +#else + return SDL_SetError("SDL not built with audio support"); +#endif + } + + /* Initialize the joystick subsystem */ + if ((flags & SDL_INIT_JOYSTICK)){ +#if !SDL_JOYSTICK_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_JOYSTICK)) { + if (SDL_JoystickInit() < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_JOYSTICK); +#else + return SDL_SetError("SDL not built with joystick support"); +#endif + } + + if ((flags & SDL_INIT_GAMECONTROLLER)){ +#if !SDL_JOYSTICK_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_GAMECONTROLLER)) { + if (SDL_GameControllerInit() < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_GAMECONTROLLER); +#else + return SDL_SetError("SDL not built with joystick support"); +#endif + } + + /* Initialize the haptic subsystem */ + if ((flags & SDL_INIT_HAPTIC)){ +#if !SDL_HAPTIC_DISABLED + if (SDL_PrivateShouldInitSubsystem(SDL_INIT_HAPTIC)) { + if (SDL_HapticInit() < 0) { + return (-1); + } + } + SDL_PrivateSubsystemRefCountIncr(SDL_INIT_HAPTIC); +#else + return SDL_SetError("SDL not built with haptic (force feedback) support"); +#endif + } + + return (0); +} + +int +SDL_Init(Uint32 flags) +{ + return SDL_InitSubSystem(flags); +} + +void +SDL_QuitSubSystem(Uint32 flags) +{ + /* Shut down requested initialized subsystems */ +#if !SDL_JOYSTICK_DISABLED + if ((flags & SDL_INIT_GAMECONTROLLER)) { + /* game controller implies joystick */ + flags |= SDL_INIT_JOYSTICK; + + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_GAMECONTROLLER)) { + SDL_GameControllerQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_GAMECONTROLLER); + } + + if ((flags & SDL_INIT_JOYSTICK)) { + /* joystick implies events */ + flags |= SDL_INIT_EVENTS; + + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_JOYSTICK)) { + SDL_JoystickQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_JOYSTICK); + } +#endif + +#if !SDL_HAPTIC_DISABLED + if ((flags & SDL_INIT_HAPTIC)) { + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_HAPTIC)) { + SDL_HapticQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_HAPTIC); + } +#endif + +#if !SDL_AUDIO_DISABLED + if ((flags & SDL_INIT_AUDIO)) { + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_AUDIO)) { + SDL_AudioQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_AUDIO); + } +#endif + +#if !SDL_VIDEO_DISABLED + if ((flags & SDL_INIT_VIDEO)) { + /* video implies events */ + flags |= SDL_INIT_EVENTS; + + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_VIDEO)) { + SDL_VideoQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_VIDEO); + } +#endif + +#if !SDL_TIMERS_DISABLED + if ((flags & SDL_INIT_TIMER)) { + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_TIMER)) { + SDL_TimerQuit(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_TIMER); + } +#endif + +#if !SDL_EVENTS_DISABLED + if ((flags & SDL_INIT_EVENTS)) { + if (SDL_PrivateShouldQuitSubsystem(SDL_INIT_EVENTS)) { + SDL_QuitQuit(); + SDL_StopEventLoop(); + } + SDL_PrivateSubsystemRefCountDecr(SDL_INIT_EVENTS); + } +#endif +} + +Uint32 +SDL_WasInit(Uint32 flags) +{ + int i; + int num_subsystems = SDL_arraysize(SDL_SubsystemRefCount); + Uint32 initialized = 0; + + if (!flags) { + flags = SDL_INIT_EVERYTHING; + } + + num_subsystems = SDL_min(num_subsystems, SDL_MostSignificantBitIndex32(flags) + 1); + + /* Iterate over each bit in flags, and check the matching subsystem. */ + for (i = 0; i < num_subsystems; ++i) { + if ((flags & 1) && SDL_SubsystemRefCount[i] > 0) { + initialized |= (1 << i); + } + + flags >>= 1; + } + + return initialized; +} + +void +SDL_Quit(void) +{ + SDL_bInMainQuit = SDL_TRUE; + + /* Quit all subsystems */ +#if SDL_VIDEO_DRIVER_WINDOWS + SDL_HelperWindowDestroy(); +#endif + SDL_QuitSubSystem(SDL_INIT_EVERYTHING); + +#if !SDL_TIMERS_DISABLED + SDL_TicksQuit(); +#endif + + SDL_ClearHints(); + SDL_AssertionsQuit(); + SDL_LogResetPriorities(); + + /* Now that every subsystem has been quit, we reset the subsystem refcount + * and the list of initialized subsystems. + */ + SDL_memset( SDL_SubsystemRefCount, 0x0, sizeof(SDL_SubsystemRefCount) ); + + SDL_bInMainQuit = SDL_FALSE; +} + +/* Get the library version number */ +void +SDL_GetVersion(SDL_version * ver) +{ + SDL_VERSION(ver); +} + +/* Get the library source revision */ +const char * +SDL_GetRevision(void) +{ + return SDL_REVISION; +} + +/* Get the library source revision number */ +int +SDL_GetRevisionNumber(void) +{ + return SDL_REVISION_NUMBER; +} + +/* Get the name of the platform */ +const char * +SDL_GetPlatform() +{ +#if __AIX__ + return "AIX"; +#elif __ANDROID__ + return "Android"; +#elif __BSDI__ + return "BSDI"; +#elif __DREAMCAST__ + return "Dreamcast"; +#elif __EMSCRIPTEN__ + return "Emscripten"; +#elif __FREEBSD__ + return "FreeBSD"; +#elif __HAIKU__ + return "Haiku"; +#elif __HPUX__ + return "HP-UX"; +#elif __IRIX__ + return "Irix"; +#elif __LINUX__ + return "Linux"; +#elif __MINT__ + return "Atari MiNT"; +#elif __MACOS__ + return "MacOS Classic"; +#elif __MACOSX__ + return "Mac OS X"; +#elif __NACL__ + return "NaCl"; +#elif __NETBSD__ + return "NetBSD"; +#elif __OPENBSD__ + return "OpenBSD"; +#elif __OS2__ + return "OS/2"; +#elif __OSF__ + return "OSF/1"; +#elif __QNXNTO__ + return "QNX Neutrino"; +#elif __RISCOS__ + return "RISC OS"; +#elif __SOLARIS__ + return "Solaris"; +#elif __WIN32__ + return "Windows"; +#elif __WINRT__ + return "WinRT"; +#elif __IPHONEOS__ + return "iOS"; +#elif __PSP__ + return "PlayStation Portable"; +#else + return "Unknown (see SDL_platform.h)"; +#endif +} + +#if defined(__WIN32__) + +#if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) +/* Need to include DllMain() on Watcom C for some reason.. */ + +BOOL APIENTRY +_DllMainCRTStartup(HANDLE hModule, + DWORD ul_reason_for_call, LPVOID lpReserved) +{ + switch (ul_reason_for_call) { + case DLL_PROCESS_ATTACH: + case DLL_THREAD_ATTACH: + case DLL_THREAD_DETACH: + case DLL_PROCESS_DETACH: + break; + } + return TRUE; +} +#endif /* building DLL with Watcom C */ + +#endif /* __WIN32__ */ + +/* vi: set sts=4 ts=4 sw=4 expandtab: */ |