Logo Search packages:      
Sourcecode: scummvm version File versions  Download package

null.cpp

/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-1-2-0/backends/platform/null/null.cpp $
 * $Id: null.cpp 48238 2010-03-11 23:39:51Z fingolfin $
 *
 */

#include "backends/base-backend.h"
#include "base/main.h"

#if defined(USE_NULL_DRIVER)

#ifdef UNIX
#include <unistd.h>
#include <sys/time.h>
#endif

#include "common/rect.h"
#include "graphics/colormasks.h"

#include "backends/saves/default/default-saves.h"
#include "backends/timer/default/default-timer.h"
#include "sound/mixer_intern.h"

/*
 * Include header files needed for the getFilesystemFactory() method.
 */
#if defined(__amigaos4__)
      #include "backends/fs/amigaos4/amigaos4-fs-factory.h"
#elif defined(UNIX)
      #include "backends/fs/posix/posix-fs-factory.h"
#elif defined(WIN32)
      #include "backends/fs/windows/windows-fs-factory.h"
#endif

class OSystem_NULL : public BaseBackend {
protected:
      Common::SaveFileManager *_savefile;
      Audio::MixerImpl *_mixer;
      Common::TimerManager *_timer;
      FilesystemFactory *_fsFactory;

      timeval _startTime;
public:

      OSystem_NULL();
      virtual ~OSystem_NULL();

      virtual void initBackend();

      virtual bool hasFeature(Feature f);
      virtual void setFeatureState(Feature f, bool enable);
      virtual bool getFeatureState(Feature f);
      virtual const GraphicsMode *getSupportedGraphicsModes() const;
      virtual int getDefaultGraphicsMode() const;
      bool setGraphicsMode(const char *name);
      virtual bool setGraphicsMode(int mode);
      virtual int getGraphicsMode() const;
      virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format);
      virtual int16 getHeight();
      virtual int16 getWidth();
      virtual void setPalette(const byte *colors, uint start, uint num);
      virtual void grabPalette(byte *colors, uint start, uint num);
      virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
      virtual void updateScreen();
      virtual Graphics::Surface *lockScreen();
      virtual void unlockScreen();
      virtual void setShakePos(int shakeOffset);

      virtual void showOverlay();
      virtual void hideOverlay();
      virtual void clearOverlay();
      virtual void grabOverlay(OverlayColor *buf, int pitch);
      virtual void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h);
      virtual int16 getOverlayHeight();
      virtual int16 getOverlayWidth();
      virtual Graphics::PixelFormat getOverlayFormat() const { return Graphics::createPixelFormat<565>(); }

      virtual bool showMouse(bool visible);

      virtual void warpMouse(int x, int y);
      virtual void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int cursorTargetScale, const Graphics::PixelFormat *format);

      virtual bool pollEvent(Common::Event &event);
      virtual uint32 getMillis();
      virtual void delayMillis(uint msecs);

      virtual MutexRef createMutex(void);
      virtual void lockMutex(MutexRef mutex);
      virtual void unlockMutex(MutexRef mutex);
      virtual void deleteMutex(MutexRef mutex);

      virtual void quit();

      virtual Common::SaveFileManager *getSavefileManager();
      virtual Audio::Mixer *getMixer();
      virtual void getTimeAndDate(TimeDate &t) const;
      virtual Common::TimerManager *getTimerManager();
      FilesystemFactory *getFilesystemFactory();

};

static const OSystem::GraphicsMode s_supportedGraphicsModes[] = {
      {0, 0, 0}
};

OSystem_NULL::OSystem_NULL() {
      _savefile = 0;
      _mixer = 0;
      _timer = 0;

      #if defined(__amigaos4__)
            _fsFactory = new AmigaOSFilesystemFactory();
      #elif defined(UNIX)
            _fsFactory = new POSIXFilesystemFactory();
      #elif defined(WIN32)
            _fsFactory = new WindowsFilesystemFactory();
      #else
            #error Unknown and unsupported FS backend
      #endif
}

OSystem_NULL::~OSystem_NULL() {
      delete _savefile;
      delete _mixer;
      delete _timer;
      delete _fsFactory;
}

void OSystem_NULL::initBackend() {
      _savefile = new DefaultSaveFileManager();
      _mixer = new Audio::MixerImpl(this, 22050);
      _timer = new DefaultTimerManager();

      _mixer->setReady(false);

      gettimeofday(&_startTime, NULL);

      // Note that both the mixer and the timer manager are useless
      // this way; they need to be hooked into the system somehow to
      // be functional. Of course, can't do that in a NULL backend :).

      OSystem::initBackend();
}

bool OSystem_NULL::hasFeature(Feature f) {
      return false;
}

void OSystem_NULL::setFeatureState(Feature f, bool enable) {
}

bool OSystem_NULL::getFeatureState(Feature f) {
      return false;
}

const OSystem::GraphicsMode* OSystem_NULL::getSupportedGraphicsModes() const {
      return s_supportedGraphicsModes;
}


int OSystem_NULL::getDefaultGraphicsMode() const {
      return -1;
}

bool OSystem_NULL::setGraphicsMode(const char *mode) {
      return true;
}

bool OSystem_NULL::setGraphicsMode(int mode) {
      return true;
}

int OSystem_NULL::getGraphicsMode() const {
      return -1;
}

void OSystem_NULL::initSize(uint width, uint height, const Graphics::PixelFormat *format) {
}

int16 OSystem_NULL::getHeight() {
      return 200;
}

int16 OSystem_NULL::getWidth() {
      return 320;
}

void OSystem_NULL::setPalette(const byte *colors, uint start, uint num) {
}

void OSystem_NULL::grabPalette(byte *colors, uint start, uint num) {

}

void OSystem_NULL::copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h) {
}

void OSystem_NULL::updateScreen() {
}

Graphics::Surface *OSystem_NULL::lockScreen() {
      return 0;
}

void OSystem_NULL::unlockScreen() {
}

void OSystem_NULL::setShakePos(int shakeOffset) {
}

void OSystem_NULL::showOverlay() {
}

void OSystem_NULL::hideOverlay() {
}

void OSystem_NULL::clearOverlay() {
}

void OSystem_NULL::grabOverlay(OverlayColor *buf, int pitch) {
}

void OSystem_NULL::copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h) {
}

int16 OSystem_NULL::getOverlayHeight() {
      return getHeight();
}

int16 OSystem_NULL::getOverlayWidth() {
      return getWidth();
}


bool OSystem_NULL::showMouse(bool visible) {
      return true;
}

void OSystem_NULL::warpMouse(int x, int y) {
}

void OSystem_NULL::setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, uint32 keycolor, int cursorTargetScale, const Graphics::PixelFormat *format) {
}

bool OSystem_NULL::pollEvent(Common::Event &event) {
      return false;
}

uint32 OSystem_NULL::getMillis() {
#ifdef UNIX
      timeval curTime;
      gettimeofday(&curTime, NULL);
      return (uint32)(((curTime.tv_sec - _startTime.tv_sec) * 1000) + \
                  ((curTime.tv_usec - _startTime.tv_usec) / 1000));
#else
      return 0;
#endif
}

void OSystem_NULL::delayMillis(uint msecs) {
#ifdef UNIX
      usleep(msecs * 1000);
#endif
}

OSystem::MutexRef OSystem_NULL::createMutex(void) {
      return NULL;
}

void OSystem_NULL::lockMutex(MutexRef mutex) {
}

void OSystem_NULL::unlockMutex(MutexRef mutex) {
}

void OSystem_NULL::deleteMutex(MutexRef mutex) {
}

void OSystem_NULL::quit() {
}

Common::SaveFileManager *OSystem_NULL::getSavefileManager() {
      assert(_savefile);
      return _savefile;
}

Audio::Mixer *OSystem_NULL::getMixer() {
      assert(_mixer);
      return _mixer;
}

Common::TimerManager *OSystem_NULL::getTimerManager() {
      assert(_timer);
      return _timer;
}

void OSystem_NULL::getTimeAndDate(TimeDate &t) const {
}

FilesystemFactory *OSystem_NULL::getFilesystemFactory() {
      return _fsFactory;
}

OSystem *OSystem_NULL_create() {
      return new OSystem_NULL();
}

int main(int argc, char *argv[]) {
      g_system = OSystem_NULL_create();
      assert(g_system);

      // Invoke the actual ScummVM main entry point:
      int res = scummvm_main(argc, argv);
      g_system->quit();       // TODO: Consider removing / replacing this!
      return res;
}

#else /* USE_NULL_DRIVER */

OSystem *OSystem_NULL_create() {
      return NULL;
}

#endif

Generated by  Doxygen 1.6.0   Back to index