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system.cpp

/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001  Ludvig Strigeus
 * Copyright (C) 2001-2004 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program 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 General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header: /cvsroot/scummvm/scummvm/common/system.cpp,v 1.13 2004/09/28 20:19:25 fingolfin Exp $
 *
 */

#include "stdafx.h"

#include "backends/intern.h"

#include "base/gameDetector.h"

#include "gui/message.h"

#include "common/config-manager.h"
#include "common/system.h"

static OSystem *s_system = 0;

static OSystem *createSystem() {
      // Attention: Do not call parseGraphicsMode() here, nor any other function
      // which needs to access the OSystem instance, else you get stuck in an
      // endless loop.

#if defined(USE_NULL_DRIVER)
      return OSystem_NULL_create();
#elif defined(__DC__)
      return OSystem_Dreamcast_create();
#elif defined(X11_BACKEND)
      return OSystem_X11_create();
#elif defined(__MORPHOS__)
      return OSystem_MorphOS_create();
#elif defined(_WIN32_WCE)
      return OSystem_WINCE3_create();
#elif defined(__GP32__) // ph0x
      return OSystem_GP32_create();
#elif defined(__PALM_OS__) //chrilith
      return OSystem_PALMOS_create();
#else
      /* SDL is the default driver for now */
      return OSystem_SDL_create();
#endif
}

00061 OSystem *OSystem::instance() {
      if (!s_system)
            s_system = createSystem();
      return s_system;
}


00068 bool OSystem::setGraphicsMode(const char *name) {
      if (!name)
            return false;

      // Sepcial case for the 'default' filter
      if (!scumm_stricmp(name, "normal") || !scumm_stricmp(name, "default")) {
            return setGraphicsMode(getDefaultGraphicsMode());
      }

      const GraphicsMode *gm = getSupportedGraphicsModes();

      while (gm->name) {
            if (!scumm_stricmp(gm->name, name)) {
                  return setGraphicsMode(gm->id);
            }
            gm++;
      }

      return false;
}

00089 void OSystem::displayMessageOnOSD(const char *msg) {
      // Display the message for 1.5 seconds
      GUI::TimedMessageDialog dialog(msg, 1500);
      dialog.runModal();
}

00095 SaveFileManager *OSystem::getSavefileManager() {
      return new DefaultSaveFileManager();
}

#pragma mark -


namespace Common {

StackLock::StackLock(OSystem::MutexRef mutex, const char *mutexName)
      : _mutex(mutex), _mutexName(mutexName) {
      lock();
}

StackLock::~StackLock() {
      unlock();
}

void StackLock::lock() {
      if (_mutexName != NULL)
            debug(6, "Locking mutex %s", _mutexName);
      
      g_system->lockMutex(_mutex);
}

void StackLock::unlock() {
      if (_mutexName != NULL)
            debug(6, "Unlocking mutex %s", _mutexName);

      g_system->unlockMutex(_mutex);
}

}     // End of namespace Common

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