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Thursday the 24th of May 2012 @ 01:07am

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LibN2L N2L Home Older News Downloads Documentation (n2l5) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Documentation (libN2L-4) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Bugtracker Project Page Report a Bug Bug List Related Things Life 2130 Devel Game Journal

LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference subSystemManager.cpp Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2003 Aaron Cameron This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ #include "subSystemManager.h" #include "SDL.h" #include "SDL_net.h" #include "SDL_ttf.h" #include "cSDLException.h" /******************************************************************************/ namespace n2l { /* ************************************************************ */ void requireSDLSubSystem( const tSDLSubSystemInitFlag i_subSystemFlag ) { tUint SDL_flag; tUint * const refCountPtr = _n2l::getSDLSubSystemReferenceCountPtr( i_subSystemFlag,SDL_flag); if (0 == refCountPtr) throw cException("requireSDLSubSystem","Ref count ptr was null"); requireSDL(); if (*refCountPtr) { ++(*refCountPtr); return; } if (-1 == SDL_InitSubSystem(SDL_flag)) throw cSDLException( "requireSDLSubSystem", "Failed to initalize subsystem" ); ++(*refCountPtr); } /* ************************************************************ */ void releaseSDLSubSystem( const tSDLSubSystemInitFlag i_subSystemFlag ) { tUint SDL_flag; tUint * const refCountPtr = _n2l::getSDLSubSystemReferenceCountPtr( i_subSystemFlag,SDL_flag); if (0 == refCountPtr) throw cException("releaseSDLSubSystem","Ref count ptr was null"); if (0==*refCountPtr) throw cException("releaseSDLSubSystem","Too many releases of " "subsystem"); --(*refCountPtr); if (0==*refCountPtr) { SDL_QuitSubSystem(SDL_flag); } releaseSDL(); } /* ************************************************************ */ void requireSDLNet() { tUint * const refCountPtr = _n2l::getSDLNetInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("requireSDLNet","Ref count ptr was null"); requireSDL(); if (*refCountPtr) { ++(*refCountPtr); return; } if (-1==SDLNet_Init()) throw cDriverLayerException("requireSDLNet", "Failed to initalize system", "SDLNet", SDL_GetError()); ++(*refCountPtr); } /* ************************************************************ */ void releaseSDLNet() { tUint * const refCountPtr = _n2l::getSDLNetInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("releaseSDLNet","Ref count ptr was null"); if (0==*refCountPtr) throw cException("releaseSDLNet","Too many release calls"); --(*refCountPtr); if (0==*refCountPtr) SDLNet_Quit(); releaseSDL(); } /* ************************************************************ */ void requireSDL() { tUint * const refCountPtr = _n2l::getSDLInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("requireSDL","Ref count ptr was null"); if (*refCountPtr) { ++(*refCountPtr); return; } if (-1==SDL_Init(0)) throw cSDLException( "requireSDL", "Failed to initalize system" ); ++(*refCountPtr); } /* ************************************************************ */ void releaseSDL() { tUint * const refCountPtr = _n2l::getSDLInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("releaseSDL","Ref count ptr was null"); if (0==*refCountPtr) throw cException("releaseSDL","Too many release calls"); --(*refCountPtr); if (0==*refCountPtr) { SDL_Quit(); } } /* ************************************************************ */ void requireSDLTTF() { tUint * const refCountPtr = _n2l::getSDLTTFInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("requireSDLTTF","Ref count ptr was null"); requireSDL(); if (*refCountPtr) { ++(*refCountPtr); return; } if (-1==TTF_Init()) throw cDriverLayerException("requireSDLTTF", "Failed to initalize system", "SDLTTF", SDL_GetError()); ++(*refCountPtr); } /* ************************************************************ */ void releaseSDLTTF() { tUint * const refCountPtr = _n2l::getSDLTTFInitReferenceCountPtr(); if (0 == refCountPtr) throw cException("releaseSDLTTF","Ref count ptr was null"); if (0==*refCountPtr) throw cException("releaseSDLTTF","Too many release calls"); --(*refCountPtr); if (0==*refCountPtr) { TTF_Quit(); } releaseSDL(); } } // namespace n2l namespace _n2l { /* ************************************************************ */ n2l::tUint * getSDLInitReferenceCountPtr() { static n2l::tUint sm_SDLInitRefCount = 0; return &sm_SDLInitRefCount; } /* ************************************************************ */ n2l::tUint * getSDLNetInitReferenceCountPtr() { static n2l::tUint sm_SDLNetInitRefCount = 0; return &sm_SDLNetInitRefCount; } /* ************************************************************ */ n2l::tUint * getSDLTTFInitReferenceCountPtr() { static n2l::tUint sm_SDLTTFInitRefCount = 0; return &sm_SDLTTFInitRefCount; } /* ************************************************************ */ n2l::tUint * getSDLSubSystemReferenceCountPtr( const n2l::tSDLSubSystemInitFlag i_subSystemFlag, n2l::tUint & o_flag ) { static n2l::tUint sm_SDLTimerRefCount = 0; static n2l::tUint sm_SDLAudioRefCount = 0; static n2l::tUint sm_SDLVideoRefCount = 0; static n2l::tUint sm_SDLJoystickRefCount = 0; static n2l::tUint sm_SDLCdromRefCount = 0; switch (i_subSystemFlag) { case n2l::SDLSubSystemInitFlag_Timer: o_flag = SDL_INIT_TIMER; return &sm_SDLTimerRefCount; case n2l::SDLSubSystemInitFlag_Audio: o_flag = SDL_INIT_AUDIO; return &sm_SDLAudioRefCount; case n2l::SDLSubSystemInitFlag_Video: o_flag = SDL_INIT_VIDEO; return &sm_SDLVideoRefCount; case n2l::SDLSubSystemInitFlag_Joystick: o_flag = SDL_INIT_JOYSTICK; return &sm_SDLJoystickRefCount; case n2l::SDLSubSystemInitFlag_Cdrom: o_flag = SDL_INIT_CDROM; return &sm_SDLCdromRefCount; default: o_flag = 0; return 0; } // It should never come to this, but... return 0; } } // namespace

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