freeldr/freeldr/include/video.h

   1 /*
   2  *  FreeLoader
   3  *  Copyright (C) 1998-2003  Brian Palmer  <brianp@sginet.com>
   4  *
   5  *  This program is free software; you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation; either version 2 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  This program is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with this program; if not, write to the Free Software
  17  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  18  */
  19
  20 #ifndef __VIDEO_H
  21 #define __VIDEO_H
  22
  23 typedef struct
  24 {
  25   U8 Red;
  26   U8 Green;
  27   U8 Blue;
  28 } PACKED PALETTE_ENTRY, *PPALETTE_ENTRY;
  29
  30 extern  PVOID   VideoOffScreenBuffer;
  31
  32 U16             BiosIsVesaSupported(VOID);                                              // Implemented in i386vid.S, returns the VESA version
  33
  34 PVOID   VideoAllocateOffScreenBuffer(VOID);                             // Returns a pointer to an off-screen buffer sufficient for the current video mode
  35
  36 #if 0 /* Not used */
  37 U32     VideoGetMemoryBankForPixel(U32 X, U32 Y);
  38 U32     VideoGetMemoryBankForPixel16(U32 X, U32 Y);
  39 U32     VideoGetBankOffsetForPixel(U32 X, U32 Y);
  40 U32     VideoGetBankOffsetForPixel16(U32 X, U32 Y);
  41 VOID    VideoSetMemoryBank(U16 BankNumber);
  42 U32     VideoGetOffScreenMemoryOffsetForPixel(U32 X, U32 Y);
  43 #endif
  44 VOID    VideoCopyOffScreenBufferToVRAM(VOID);
  45
  46 VOID    VideoSavePaletteState(PPALETTE_ENTRY Palette, U32 ColorCount);
  47 VOID    VideoRestorePaletteState(PPALETTE_ENTRY Palette, U32 ColorCount);
  48
  49 #if 0 /* Not used */
  50 VOID    VideoSetPixel16(U32 X, U32 Y, U8 Color);
  51 VOID    VideoSetPixel256(U32 X, U32 Y, U8 Color);
  52 VOID    VideoSetPixelRGB(U32 X, U32 Y, U8 Red, U8 Green, U8 Blue);
  53 VOID    VideoSetPixel16_OffScreen(U32 X, U32 Y, U8 Color);
  54 VOID    VideoSetPixel256_OffScreen(U32 X, U32 Y, U8 Color);
  55 VOID    VideoSetPixelRGB_OffScreen(U32 X, U32 Y, U8 Red, U8 Green, U8 Blue);
  56 #endif
  57
  58 VOID    VideoSetAllColorsToBlack(U32 ColorCount);
  59 VOID    VideoFadeIn(PPALETTE_ENTRY Palette, U32 ColorCount);
  60 VOID    VideoFadeOut(U32 ColorCount);
  61
  62
  63 #endif  // defined __VIDEO_H