/*
** Command & Conquer Red Alert(tm)
** Copyright 2025 Electronic Arts Inc.
**
** 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 3 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
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef VQMVESAVID_H
#define VQMVESAVID_H
/****************************************************************************
*
* C O N F I D E N T I A L --- W E S T W O O D S T U D I O S
*
*----------------------------------------------------------------------------
*
* FILE
* VESAVid.h (32-Bit protected mode)
*
* DESCRIPTION
* VESA video manager definitions.
*
* PROGRAMMER
* Denzil E. Long, Jr.
*
* DATE
* Febuary 3, 1995
*
****************************************************************************/
#ifndef __WATCOMC__
#include <pharlap.h>
#else
#include "realmode.h"
#endif
/*---------------------------------------------------------------------------
* VESA Video Modes
*-------------------------------------------------------------------------*/
#define VESA_640X400_256 0x100
#define VESA_640X480_256 0x101
#define VESA_800X600_16 0x102
#define VESA_800X600_256 0x103
#define VESA_1024X768_16 0x104
#define VESA_1024X768_256 0x105
#define VESA_1280X400_16 0x106
#define VESA_1280X400_256 0x107
#define VESA_TEXT_80X60 0x108
#define VESA_TEXT_132X25 0x109
#define VESA_TEXT_132X60 0x10C
#define VESA_320X200_32K_1 0x10D
#define VESA_320X200_32K_2 0x10E
#define VESA_640X480_32K 0x110
#define VESA_640X480_65K 0x111
#define VESA_640X480_16M 0x112
#define VESA_800X600_32K 0x113
#define VESA_800X600_65K 0x114
#define VESA_1024X768_32K 0x116
#define VESA_1024X768_65K 0x117
#define VESA_MIN VESA_640X400_256
#define VESA_MAX VESA_1024X768_65K
/*---------------------------------------------------------------------------
* Structure definitions
*-------------------------------------------------------------------------*/
/* VESAInfo - General information about this VESA implementation.
* (Filled in by VESA BIOS Function 0)
*
* Signature - Will always be 'VESA'
* Version - Version #
* OEMString - OEM ID string
* Capabilities - Not defined by VESA yet
* AvailModes - List of available modes; terminated with -1 (0xffff)
* TotalMemory - ???
* Reserved - Pads structure to 256 bytes total
*/
typedef struct _VESAInfo {
char Signature[4];
unsigned short Version;
REALPTR OEMString;
unsigned long Capabilities;
REALPTR AvailModes;
unsigned short TotalMemory;
unsigned char Reserved[236];
} VESAInfo;
/* VESAModeInfo - Information about this VESA mode.
* (Filled in by VESA BIOS Function 1)
*
* Attributes - bit 0: 1 = mode is supported
* bit 1: 1 = optional info available
* bit 2: 1 = std BIOS output functions valid in this mode
* bit 3: 0 = monochrome, 1 = color
* bit 4: 0 = text mode, 1 = graphics
* WinA_Attributes - bit 0 = window exists, bit 1=readable, bit 2= writable
* WinB_Attributes - bit 0 = window exists, bit 1=readable, bit 2= writable
* WinGranularity - smallest address boundary window can be placed upon;
* size is in KB (ie 64, 32, 4)
* WinSize - size of windows in KB (ie 64, 32)
* WinA_Segment - location of Window A in CPU space (usually 0xa000)
* WinB_Segment - location of Window B in CPU space (usually 0xb000)
* WinFunc - address of window-setting function (This is provided
* as an alternative to Int 10 for speed.)
* BytesPerScanline - # bytes per scan line
*
* Optional info (available if bit 1 of Attributes is set):
*
* XRes - X-resolution
* YRes - Y-resolution
* XCharSize - Horizontal size of char cell
* YCharSize - Vertical size of char cell
* NumPlanes - # of memory planes (???)
* BitsPerPixel - # bites per pixel
* NumBanks - # of banks (ie planes)
* MemoryModel - 00h = Text mode
* 01h = CGA mode
* 02h = Hercules
* 03h = 4 plane planar mode
* 04h = packed pixel mode (1 byte/pixel)
* 05h = non-chain 4, 256-color mode
* 06-0Fh =
* 10-FFh = OEM-specific
* BankSize - Bank size in KB
*/
typedef struct _VESAModeInfo {
unsigned short Attributes;
unsigned char WinA_Attributes;
unsigned char WinB_Attributes;
unsigned short WinGranularity;
unsigned short WinSize;
unsigned short WinA_Segment;
unsigned short WinB_Segment;
REALPTR WinFunc;
unsigned short BytesPerScanline;
unsigned short XRes;
unsigned short YRes;
unsigned char XCharSize;
unsigned char YCharSize;
unsigned char NumPlanes;
unsigned char BitsPerPixel;
unsigned char NumBanks;
unsigned char MemoryModel;
unsigned char BankSize;
unsigned char NumInputPages;
unsigned char Reserved;
unsigned char RedMaskSize;
unsigned char RedFieldPosition;
unsigned char GreenMaskSize;
unsigned char GreenFieldPosition;
unsigned char BlueMaskSize;
unsigned char BlueFieldPosition;
unsigned char RsvdMaskSize;
unsigned char RsvdFieldPosition;
unsigned char DirectColorModeInfo;
unsigned char pad[216];
} VESAModeInfo;
/*---------------------------------------------------------------------------
* Function prototypes
*-------------------------------------------------------------------------*/
long InitVESA(void);
void UninitVESA(void);
VESAModeInfo *SetVESAMode(long mode);
VESAModeInfo *ReadVESAModeInfo(long mode);
void SetVESAWindow(long grain_num);
#endif /* VQMVESAVID_H */