98 lines
3.4 KiB
C
98 lines
3.4 KiB
C
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/* Copyright (C) 2004 David Decotigny
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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USA.
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*/
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#ifndef _SOS_X86_VIDEOMEM_H_
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#define _SOS_X86_VIDEOMEM_H_
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/**
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* @file x86_videomem.h
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*
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* On x86 PC platforms, the text mode screen memory (and CGA/EGA/VGA
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* too) is mapped into physical memory. This file handles access to
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* this screen, supposed to be set in text-mode, through this memory
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* area. All the functions below print the characters directly to the
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* memory, without interpreting the escaped characters (such as \n,
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* \r...)
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*/
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#include <sos/errno.h>
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/**
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* x86 video attributes
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* See http://webster.cs.ucr.edu/AoA/DOS/ch23/CH23-1.html
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*/
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/* Normal and Dark/Light foreground */
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#define SOS_X86_VIDEO_FG_BLACK 0
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#define SOS_X86_VIDEO_FG_DKGRAY 8
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#define SOS_X86_VIDEO_FG_BLUE 1
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#define SOS_X86_VIDEO_FG_LTBLUE 9
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#define SOS_X86_VIDEO_FG_GREEN 2
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#define SOS_X86_VIDEO_FG_LTGREEN 10
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#define SOS_X86_VIDEO_FG_CYAN 3
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#define SOS_X86_VIDEO_FG_LTCYAN 11
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#define SOS_X86_VIDEO_FG_RED 4
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#define SOS_X86_VIDEO_FG_LTRED 12
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#define SOS_X86_VIDEO_FG_MAGENTA 5
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#define SOS_X86_VIDEO_FG_LTMAGENTA 13
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#define SOS_X86_VIDEO_FG_BROWN 6
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#define SOS_X86_VIDEO_FG_YELLOW 14
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#define SOS_X86_VIDEO_FG_LTGRAY 7
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#define SOS_X86_VIDEO_FG_WHITE 15
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/* Background */
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#define SOS_X86_VIDEO_BG_BLACK (0 << 4)
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#define SOS_X86_VIDEO_BG_BLUE (1 << 4)
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#define SOS_X86_VIDEO_BG_GREEN (2 << 4)
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#define SOS_X86_VIDEO_BG_CYAN (3 << 4)
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#define SOS_X86_VIDEO_BG_RED (4 << 4)
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#define SOS_X86_VIDEO_BG_MAGENTA (5 << 4)
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#define SOS_X86_VIDEO_BG_BROWN (6 << 4)
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#define SOS_X86_VIDEO_BG_LTGRAY (7 << 4)
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/* Blinking */
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#define SOS_X86_VIDEO_FG_BLINKING (1 << 7)
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/** Setup the video RAM mapping and clear the screen */
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sos_ret_t sos_x86_videomem_setup(void);
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/** Clears the screen and set the background color as given by
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attribute */
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sos_ret_t sos_x86_videomem_cls(unsigned char attribute);
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/** Print the string on the scren with the given attribute. Does not
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handle scrolling */
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sos_ret_t sos_x86_videomem_putstring(unsigned char row, unsigned char col,
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unsigned char attribute,
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const char *str);
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/** Print the character on the scren with the given attribute. Does not
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handle scrolling */
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sos_ret_t sos_x86_videomem_putchar(unsigned char row, unsigned char col,
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unsigned char attribute,
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unsigned char c);
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/**
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* Print the formatted string. Very restricted version of printf(3):
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* 1/ can print max 255 chars, 2/ supports only %d/%i, %c, %s, %x
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* without any support for flag charachters (eg %08x).
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*/
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sos_ret_t sos_x86_videomem_printf(unsigned char row, unsigned char col,
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unsigned char attribute,
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const char *format, /* args */...)
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__attribute__ ((format (printf, 4, 5)));
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#endif /* _SOS_X86_VIDEOMEM_H_ */
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