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osystem_ds.h

/* 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.
 *
 * $URL$
 * $Id$
 *
 */


#ifndef _OSYSTEM_DS_H_
#define _OSYSTEM_DS_H_

#include "backends/base-backend.h"
#include "common/events.h"
#include "nds.h"
#include "gbampsave.h"
#include "backends/saves/default/default-saves.h"
#include "backends/timer/default/default-timer.h"
#include "audio/mixer_intern.h"
#include "graphics/surface.h"
#include "graphics/colormasks.h"
#include "graphics/palette.h"

00041 class OSystem_DS : public BaseBackend, public PaletteManager {
protected:

      int eventNum;
      int lastPenFrame;

      Common::Event eventQueue[96];
      int queuePos;

      GBAMPSaveFileManager mpSaveManager;
      Audio::MixerImpl *_mixer;
      DefaultTimerManager *_timer;
      Graphics::Surface _framebuffer;
      bool _frameBufferExists;
      bool _graphicsEnable;

      static OSystem_DS *_instance;

      u16 _palette[256];
      u16 _cursorPalette[256];

      u8 _cursorImage[64 * 64];
      uint _cursorW;
      uint _cursorH;
      int _cursorHotX;
      int _cursorHotY;
      byte _cursorKey;
      int _cursorScale;


      Graphics::Surface *createTempFrameBuffer();
      bool _disableCursorPalette;

      int _gammaValue;

public:
      typedef void (*SoundProc)(byte *buf, int len);
      typedef int  (*TimerProc)(int interval);

      OSystem_DS();
      virtual ~OSystem_DS();

      static OSystem_DS *instance() { return _instance; }

      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;
      virtual bool setGraphicsMode(int mode);
      bool setGraphicsMode(const char *name);
      virtual int getGraphicsMode() const;
      virtual void initSize(uint width, uint height, const Graphics::PixelFormat *format);
      virtual int16 getHeight();
      virtual int16 getWidth();

00097       virtual PaletteManager *getPaletteManager() { return this; }
protected:
      // PaletteManager API
      virtual void setPalette(const byte *colors, uint start, uint num);
      virtual void grabPalette(byte *colors, uint start, uint num);

public:
      void restoreHardwarePalette();

      virtual void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
      virtual void updateScreen();
      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();
00117       virtual Graphics::PixelFormat getOverlayFormat() const { return Graphics::createPixelFormat<1555>(); }

      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, u32 keycolor, int targetCursorScale, const Graphics::PixelFormat *format);

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

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


      // FIXME/TODO: The CD API as follows is *obsolete*
      // and should be replaced by an AudioCDManager subclass,
      // see backends/audiocd/ and common/system.h
      virtual bool openCD(int drive);
      virtual bool pollCD();
      virtual void playCD(int track, int num_loops, int start_frame, int duration);
      virtual void stopCD();
      virtual void updateCD();

      virtual void quit();

      virtual Common::SaveFileManager *getSavefileManager();

      void addEvent(const Common::Event& e);
      bool isEventQueueEmpty() const { return queuePos == 0; }

      virtual bool grabRawScreen(Graphics::Surface *surf);

      virtual void setFocusRectangle(const Common::Rect& rect);

      virtual void clearFocusRectangle();

      virtual void initBackend();

      virtual Graphics::Surface *lockScreen();
      virtual void unlockScreen();

00162       virtual Audio::Mixer *getMixer() { return _mixer; }
      Audio::MixerImpl *getMixerImpl() { return _mixer; }

00165       virtual Common::TimerManager *getTimerManager() { return _timer; }
      static int timerHandler(int t);


      virtual void addAutoComplete(const char *word);
      virtual void clearAutoComplete();
      virtual void setCharactersEntered(int count);

      u16 getDSPaletteEntry(u32 entry) const { return _palette[entry]; }
      u16 getDSCursorPaletteEntry(u32 entry) const { return !_disableCursorPalette? _cursorPalette[entry]: _palette[entry]; }

      virtual void setCursorPalette(const byte *colors, uint start, uint num);

00178       virtual void disableCursorPalette(bool dis) { _disableCursorPalette = dis; refreshCursor(); }

      FilesystemFactory *getFilesystemFactory();

      void refreshCursor();

      Common::WriteStream *createConfigWriteStream();
      Common::SeekableReadStream *createConfigReadStream();

      u16 applyGamma(u16 color);
      void setGammaValue(int gamma) { _gammaValue = gamma; }

      void engineDone();
};

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

#endif

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