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/* ScummVM - Scumm Interpreter
 * Copyright (C) 2001-2006 The ScummVM project
 * Copyright (C) 2002 Ph0x - GP32 Backend
 * Copyright (C) 2003/2004 DJWillis - GP32 Backend
 * Copyright (C) 2005 Won Star - GP32 Backend
 * 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
 * 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://svn.sourceforge.net/svnroot/scummvm/scummvm/tags/release-0-9-1/backends/gp32/gp32_osys.h $
 * $Id: gp32_osys.h 23500 2006-07-14 16:07:26Z wonst719 $

#ifndef GP32_OSYS_H
#define GP32_OSYS_H

//Standard ScummVM includes.
#include "common/stdafx.h"
#include "common/scummsys.h"
#include "common/system.h"
#include "backends/intern.h"

#include "base/engine.h"

#include "backends/gp32/gp32std.h"
#include "backends/gp32/gp32std_grap.h"
#include "backends/gp32/gp32std_input.h"
#include "backends/gp32/gp32std_sound.h"

class OSystem_GP32 : public OSystem {
      static OSystem *instance();

      uint16 _screenWidth, _screenHeight;
      uint8 *_gameScreen;
      uint16 *_tmpScreen, *_hwScreen;
      OverlayColor *_overlayBuffer;

      int _overlayWidth, _overlayHeight;
      bool _overlayVisible;
      uint32 _shakePos;

      // Keyboard mouse emulation
      struct KbdMouse { 
            int16 x, y, x_vel, y_vel, x_max, y_max, x_down_count, y_down_count;
            uint32 last_time, delay_time, x_down_time, y_down_time;

      struct MousePos {
            int16 x, y, w, h;

      // mouse
      KbdMouse _km;
      bool _mouseVisible;
      int   _mouseX, _mouseY;
      int   _mouseWidth, _mouseHeight;
      int   _mouseHotspotX, _mouseHotspotY;
      byte _mouseKeyColor;
      byte *_mouseBuf;

      bool _adjustAspectRatio;
      /** Force full redraw on next updateScreen */
      bool _forceFull;

      uint16 _currentPalette[256];
//    uint _paletteDirtyStart, _paletteDirtyEnd;

      int32 _samplesPerSec;



      bool hasFeature(Feature f);
      void setFeatureState(Feature f, bool enable);
      bool getFeatureState(Feature f);
      const GraphicsMode *getSupportedGraphicsModes() const;
      int getDefaultGraphicsMode() const;
      bool setGraphicsMode(int mode);
      bool setGraphicsMode(const char *name);
      int getGraphicsMode() const;
      void initSize(uint width, uint height);
      int16 getHeight();
      int16 getWidth();
      void setPalette(const byte *colors, uint start, uint num);
      void grabPalette(byte *colors, uint start, uint num);

      void copyRectToScreen(const byte *buf, int pitch, int x, int y, int w, int h);
      void updateScreen();
      void setShakePos(int shakeOffset);

      void showOverlay();
      void hideOverlay();
      void clearOverlay();
      void grabOverlay(OverlayColor *buf, int pitch);
      void copyRectToOverlay(const OverlayColor *buf, int pitch, int x, int y, int w, int h);

      bool grabRawScreen(Graphics::Surface *surf);

      int16 getOverlayHeight();
      int16 getOverlayWidth();

      OverlayColor RGBToColor(uint8 r, uint8 g, uint8 b);
      void colorToRGB(OverlayColor color, uint8 &r, uint8 &g, uint8 &b);

      bool showMouse(bool visible);

      void warpMouse(int x, int y);
      void setMouseCursor(const byte *buf, uint w, uint h, int hotspotX, int hotspotY, byte keycolor = 255, int cursorTargetScale = 1);

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

      void setTimerCallback(TimerProc callback, int interval);

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

      bool setSoundCallback(SoundProc proc, void *param);
      void clearSoundCallback();
      int getOutputSampleRate() const;

      void quit();

      void setWindowCaption(const char *caption);

      void displayMessageOnOSD(const char *msg);

      void fillMouseEvent(Event &event, int x, int y);
      void handleKbdMouse();

      #warning GP32_OSYS.H Called more then once.
#endif /* GP32_H */

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