boot/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 along
  16  *  with this program; if not, write to the Free Software Foundation, Inc.,
  17  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #pragma once
  21
  22 #include <pshpack1.h>
  23 typedef struct
  24 {
  25   UCHAR Red;
  26   UCHAR Green;
  27   UCHAR Blue;
  28 } PALETTE_ENTRY, *PPALETTE_ENTRY;
  29 #include <poppack.h>
  30
  31 extern    PVOID    VideoOffScreenBuffer;
  32
  33 USHORT  BiosIsVesaSupported(VOID);                                              // Implemented in i386vid.c, returns the VESA version
  34 BOOLEAN BiosIsVesaDdcSupported(VOID);
  35 BOOLEAN BiosVesaReadEdid(VOID);
  36
  37 PVOID   VideoAllocateOffScreenBuffer(VOID);                // Returns a pointer to an off-screen buffer sufficient for the current video mode
  38
  39 VOID    VideoCopyOffScreenBufferToVRAM(VOID);
  40
  41 VOID    VideoSavePaletteState(PPALETTE_ENTRY Palette, ULONG ColorCount);
  42 VOID    VideoRestorePaletteState(PPALETTE_ENTRY Palette, ULONG ColorCount);
  43
  44 VOID    VideoSetAllColorsToBlack(ULONG ColorCount);
  45 VOID    VideoFadeIn(PPALETTE_ENTRY Palette, ULONG ColorCount);
  46 VOID    VideoFadeOut(ULONG ColorCount);