/* Copyright (C) 2004  David Decotigny   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 2   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, write to the Free Software   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,   USA. */#ifndef _SOS_X86_VIDEOMEM_H_#define _SOS_X86_VIDEOMEM_H_/** * @file x86_videomem.h * * On x86 PC platforms, the text mode screen memory (and CGA/EGA/VGA * too) is mapped into physical memory. This file handles access to * this screen, supposed to be set in text-mode, through this memory * area. All the functions below print the characters directly to the * memory, without interpreting the escaped characters (such as \n, * \r...) */#include <sos/errno.h>/** * x86 video attributes * See http://webster.cs.ucr.edu/AoA/DOS/ch23/CH23-1.html *//* Normal and Dark/Light foreground */#define SOS_X86_VIDEO_FG_BLACK     0#define SOS_X86_VIDEO_FG_DKGRAY    8#define SOS_X86_VIDEO_FG_BLUE      1#define SOS_X86_VIDEO_FG_LTBLUE    9#define SOS_X86_VIDEO_FG_GREEN     2#define SOS_X86_VIDEO_FG_LTGREEN   10#define SOS_X86_VIDEO_FG_CYAN      3#define SOS_X86_VIDEO_FG_LTCYAN    11#define SOS_X86_VIDEO_FG_RED       4#define SOS_X86_VIDEO_FG_LTRED     12#define SOS_X86_VIDEO_FG_MAGENTA   5#define SOS_X86_VIDEO_FG_LTMAGENTA 13#define SOS_X86_VIDEO_FG_BROWN     6#define SOS_X86_VIDEO_FG_YELLOW    14#define SOS_X86_VIDEO_FG_LTGRAY    7#define SOS_X86_VIDEO_FG_WHITE     15/* Background */#define SOS_X86_VIDEO_BG_BLACK     (0 << 4)#define SOS_X86_VIDEO_BG_BLUE      (1 << 4)#define SOS_X86_VIDEO_BG_GREEN     (2 << 4)#define SOS_X86_VIDEO_BG_CYAN      (3 << 4)#define SOS_X86_VIDEO_BG_RED       (4 << 4)#define SOS_X86_VIDEO_BG_MAGENTA   (5 << 4)#define SOS_X86_VIDEO_BG_BROWN     (6 << 4)#define SOS_X86_VIDEO_BG_LTGRAY    (7 << 4)/* Blinking */#define SOS_X86_VIDEO_FG_BLINKING  (1 << 7)/** Setup the video RAM mapping and clear the screen */sos_ret_t sos_x86_videomem_setup(void);/** Clears the screen and set the background color as given by    attribute */sos_ret_t sos_x86_videomem_cls(unsigned char attribute);/** Print the string on the scren with the given attribute. Does not    handle scrolling */sos_ret_t sos_x86_videomem_putstring(unsigned char row, unsigned char col,				     unsigned char attribute,				     const char *str);/** Print the character on the scren with the given attribute. Does not    handle scrolling */sos_ret_t sos_x86_videomem_putchar(unsigned char row, unsigned char col,				   unsigned char attribute,				   unsigned char c);/** * Print the formatted string. Very restricted version of printf(3): * 1/ can print max 255 chars, 2/ supports only %d/%i, %c, %s, %x * without any support for flag charachters (eg %08x). */sos_ret_t sos_x86_videomem_printf(unsigned char row, unsigned char col,				  unsigned char attribute,				  const char *format, /* args */...)     __attribute__ ((format (printf, 4, 5)));#endif /* _SOS_X86_VIDEOMEM_H_ */