[FREELDR]
[reactos.git] / reactos / 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);