Mercurial > sdl-ios-xcode
view src/SDL.c @ 1081:369dcdb52d70
Call old interrupt when receiving MIDI stuff
author | Patrice Mandin <patmandin@gmail.com> |
---|---|
date | Wed, 29 Jun 2005 16:18:46 +0000 |
parents | b8d311d90021 |
children | 173c063d4f55 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2004 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Sam Lantinga slouken@libsdl.org */ #ifdef SAVE_RCSID static char rcsid = "@(#) $Id$"; #endif /* Initialization code for SDL */ #include <stdlib.h> /* For getenv() */ #ifdef ENABLE_PTH #include <pth.h> #endif #include "SDL.h" #include "SDL_endian.h" #include "SDL_fatal.h" #ifndef DISABLE_VIDEO #include "SDL_leaks.h" #endif /* Initialization/Cleanup routines */ #ifndef DISABLE_JOYSTICK extern int SDL_JoystickInit(void); extern void SDL_JoystickQuit(void); #endif #ifndef DISABLE_CDROM extern int SDL_CDROMInit(void); extern void SDL_CDROMQuit(void); #endif #ifndef DISABLE_TIMERS extern void SDL_StartTicks(void); extern int SDL_TimerInit(void); extern void SDL_TimerQuit(void); #endif /* The current SDL version */ static SDL_version version = { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; /* The initialized subsystems */ static Uint32 SDL_initialized = 0; static Uint32 ticks_started = 0; #ifdef CHECK_LEAKS int surfaces_allocated = 0; #endif int SDL_InitSubSystem(Uint32 flags) { #ifndef DISABLE_VIDEO /* Initialize the video/event subsystem */ if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { if ( SDL_VideoInit(getenv("SDL_VIDEODRIVER"), (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { return(-1); } SDL_initialized |= SDL_INIT_VIDEO; } #else if ( flags & SDL_INIT_VIDEO ) { SDL_SetError("SDL not built with video support"); return(-1); } #endif #ifndef DISABLE_AUDIO /* Initialize the audio subsystem */ if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { if ( SDL_AudioInit(getenv("SDL_AUDIODRIVER")) < 0 ) { return(-1); } SDL_initialized |= SDL_INIT_AUDIO; } #else if ( flags & SDL_INIT_AUDIO ) { SDL_SetError("SDL not built with audio support"); return(-1); } #endif #ifndef DISABLE_TIMERS /* Initialize the timer subsystem */ if ( ! ticks_started ) { SDL_StartTicks(); ticks_started = 1; } if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { if ( SDL_TimerInit() < 0 ) { return(-1); } SDL_initialized |= SDL_INIT_TIMER; } #else if ( flags & SDL_INIT_TIMER ) { SDL_SetError("SDL not built with timer support"); return(-1); } #endif #ifndef DISABLE_JOYSTICK /* Initialize the joystick subsystem */ if ( (flags & SDL_INIT_JOYSTICK) && !(SDL_initialized & SDL_INIT_JOYSTICK) ) { if ( SDL_JoystickInit() < 0 ) { return(-1); } SDL_initialized |= SDL_INIT_JOYSTICK; } #else if ( flags & SDL_INIT_JOYSTICK ) { SDL_SetError("SDL not built with joystick support"); return(-1); } #endif #ifndef DISABLE_CDROM /* Initialize the CD-ROM subsystem */ if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { if ( SDL_CDROMInit() < 0 ) { return(-1); } SDL_initialized |= SDL_INIT_CDROM; } #else if ( flags & SDL_INIT_CDROM ) { SDL_SetError("SDL not built with cdrom support"); return(-1); } #endif return(0); } int SDL_Init(Uint32 flags) { #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) if (!pth_init()) { return -1; } #endif /* Clear the error message */ SDL_ClearError(); /* Initialize the desired subsystems */ if ( SDL_InitSubSystem(flags) < 0 ) { return(-1); } /* Everything is initialized */ if ( !(flags & SDL_INIT_NOPARACHUTE) ) { SDL_InstallParachute(); } return(0); } void SDL_QuitSubSystem(Uint32 flags) { /* Shut down requested initialized subsystems */ #ifndef DISABLE_CDROM if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { SDL_CDROMQuit(); SDL_initialized &= ~SDL_INIT_CDROM; } #endif #ifndef DISABLE_JOYSTICK if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { SDL_JoystickQuit(); SDL_initialized &= ~SDL_INIT_JOYSTICK; } #endif #ifndef DISABLE_TIMERS if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { SDL_TimerQuit(); SDL_initialized &= ~SDL_INIT_TIMER; } #endif #ifndef DISABLE_AUDIO if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { SDL_AudioQuit(); SDL_initialized &= ~SDL_INIT_AUDIO; } #endif #ifndef DISABLE_VIDEO if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { SDL_VideoQuit(); SDL_initialized &= ~SDL_INIT_VIDEO; } #endif } Uint32 SDL_WasInit(Uint32 flags) { if ( ! flags ) { flags = SDL_INIT_EVERYTHING; } return (SDL_initialized&flags); } void SDL_Quit(void) { /* Quit all subsystems */ SDL_QuitSubSystem(SDL_INIT_EVERYTHING); #ifdef CHECK_LEAKS /* Print the number of surfaces not freed */ if ( surfaces_allocated != 0 ) { fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", surfaces_allocated); } #endif /* Uninstall any parachute signal handlers */ SDL_UninstallParachute(); #if !defined(DISABLE_THREADS) && defined(ENABLE_PTH) pth_kill(); #endif } /* Return the library version number */ const SDL_version * SDL_Linked_Version(void) { return(&version); } #if defined(_WIN32_WCE) || (defined(__WATCOMC__) && defined(BUILD_DLL)) /* Need to include DllMain() on Windows CE and Watcom C for some reason.. */ #include <windows.h> BOOL APIENTRY DllMain( 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 /* _WIN32_WCE and building DLL with Watcom C */