/**************************************************************
$Id$
**************************************************************/

#ifndef OBJGFX30_H
#define OBJGFX30_H

#ifndef TRUE
  #define TRUE 1
#endif

#ifndef FALSE
  #define FALSE 0
#endif

#define gm320x200x256   0x13
#define gm640x480x256   0x101
#define gm800x600x256   0x103
#define gm1024x768x256  0x105
#define gm1280x1024x256 0x107

  /* 32768 color video mode constants */
#define gm640x480x32k   0x110
#define gm800x600x32k   0x113
#define gm1024x768x32k  0x116
#define gm1280x1024x32k 0x119

  /* 65536 color video mode constants */
#define gm640x480x64k   0x111
#define gm800x600x64k   0x114
#define gm1024x768x64k  0x117
#define gm1280x1024x64k 0x11A

  /* 16.8 million color video mode constants */
#define gm640x480x16m   0x112
#define gm800x600x16m   0x115
#define gm1024x768x16m  0x118
#define gm1280x1024x16m 0x11B

typedef signed char        Int8;
typedef signed short int   Int16;
typedef signed long int    Int32;

typedef unsigned char      UInt8;
typedef unsigned short int UInt16;
typedef unsigned long int  UInt32;

enum og_DataState { og_None, og_Owner, og_Aliasing };

typedef struct { 
          UInt8 red;
          UInt8 green;
          UInt8 blue;
        } TRGB;

typedef struct {
          UInt16 ModeAttributes;
          UInt8  WindowAFlags;
          UInt8  WindowBFlags;
          UInt16 Granularity;
          UInt16 WindowSize;
          UInt16 WindowASeg;
          UInt16 WindowBSeg;
          void*  BankSwitch;
          UInt16 BytesPerLine;
          UInt16 xRes, yRes;
          UInt8  CharWidth;
          UInt8  CharHeight;
          UInt8  NumBitPlanes;
          UInt8  BitsPerPixel;
          UInt8  NumberOfBanks;
          UInt8  MemoryModel;
          UInt8  BankSize;
          UInt8  NumOfImagePages;
          UInt8  Reserved;
          // Direct colour fields (required for Direct/6 and YUV/7 memory models
          UInt8  RedMaskSize;
          UInt8  RedFieldPosition;
          UInt8  GreenMaskSize;
          UInt8  GreenFieldPosition;
          UInt8  BlueMaskSize;
          UInt8  BlueFieldPosition; 
          UInt8  RsvdMaskSize;
          UInt8  RsvdFieldPosition;
          UInt8  DirectColourMode;
          // VESA 2.0 specific fields
          UInt32 PhysBasePtr;
          void*  OffScreenMemOffset;
          UInt16 OffScreenMemSize;
          UInt8  paddington[461];
        } TMode_Rec;

typedef struct {
          char    VBESignature[4];
          UInt8   minVersion;
          UInt8   majVersion;
          char *  OEMStringPtr;
          UInt32  Capabilities;
          UInt16* VideoModePtr;
          UInt16  TotalMemory;
          // VESA 2.0 specific fields
          UInt16  OEMSoftwareRev;
          char *  OEMVendorNamePtr;
          char *  OEMProductNamePtr;
          char *  OEMProductRevPtr;
          UInt8   paddington[474];
        } TVESA_Rec;

typedef struct {
          UInt8 BPP;
          UInt8 RedFieldPosition;
          UInt8 GreenFieldPosition;
          UInt8 BlueFieldPosition;
          UInt8 RedMaskSize;
          UInt8 GreenMaskSize;
          UInt8 BlueMaskSize;
        } TPixelFmt;

// Default pixel formats

const TPixelFmt def_pixfmt_8bpp  = {8,0,0,0,0,0,0};
const TPixelFmt def_pixfmt_15bpp = {15,10,5,0,5,5,5};
const TPixelFmt def_pixfmt_16bpp = {16,11,5,0,5,6,5};
const TPixelFmt def_pixfmt_24bpp = {24,16,8,0,8,8,8};
const TPixelFmt def_pixfmt_32bpp = {32,16,8,0,8,8,8};

class TGfx0 {
        protected:
          TGfx0*  Owner;
	  void*   Buffer;
          UInt32* LineOfs;
          TRGB*   pal;
          UInt32  xRes, yRes;
          UInt32  MaxX, MaxY;
          UInt32  bSize;       // buffer size (in bytes)
          UInt32  lSize;       // LineOfs size (in bytes)
          UInt32  TransparentColor;  
          og_DataState DataState;
          UInt8   BPP;         // bits per pixel
          UInt8   RedFieldPosition;
          UInt8   GreenFieldPosition;
          UInt8   BlueFieldPosition;
          UInt8   RedShifter;
          UInt8   GreenShifter;
          UInt8   BlueShifter;
        public:
          TGfx0(void);
          bool create(UInt32, UInt32,TPixelFmt*);
          void flip(TGfx0*);
          UInt32 getMaxX(void);
          UInt32 getMaxY(void);
          UInt32 getpixel(UInt32, UInt32);
          void putpixel(UInt32, UInt32, UInt32);
          UInt32 RGB(UInt8, UInt8, UInt8);
          void setRGBPalette(UInt8, UInt8, UInt8, UInt8);
          void unpackRGB(UInt32, UInt8*, UInt8*, UInt8*);
          ~TGfx0(void);
      }; // gfx0

#endif