258 lines
6.9 KiB
C++
258 lines
6.9 KiB
C++
/*
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* Copyright (c) 2011, 2012, 2014 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* vga.h
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* A Video Graphics Array driver.
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*/
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#ifndef SORTIX_VGA_H
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#define SORTIX_VGA_H
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#include <stddef.h>
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#include <sortix/kernel/refcount.h>
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namespace Sortix {
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class Descriptor;
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const size_t VGA_FONT_WIDTH = 8UL;
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const size_t VGA_FONT_HEIGHT = 16UL;
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const size_t VGA_FONT_NUMCHARS = 256UL;
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const size_t VGA_FONT_CHARSIZE = VGA_FONT_WIDTH * VGA_FONT_HEIGHT / 8UL;
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namespace VGA {
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// https://en.wikipedia.org/wiki/Code_page_437
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__attribute__((unused))
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static inline int MapWideToVGAFont(wchar_t c)
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{
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if ( 32 <= c && c < 127 )
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return (int) c;
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switch ( c )
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{
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case L'☺': return 1;
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case L'☻': return 2;
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case L'♥': return 3;
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case L'♦': return 4;
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case L'♣': return 5;
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case L'♠': return 6;
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case L'•': return 7;
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case L'◘': return 8;
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case L'○': return 9;
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case L'◙': return 10;
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case L'♂': return 11;
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case L'♀': return 12;
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case L'♪': return 13;
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case L'♬': return 14;
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case L'☼': return 15;
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case L'►': return 16;
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case L'◄': return 17;
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case L'↕': return 18;
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case L'‼': return 19;
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case L'¶': return 20;
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case L'§': return 21;
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case L'▬': return 22;
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case L'↨': return 23;
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case L'↑': return 24;
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case L'↓': return 25;
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case L'→': return 26;
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case L'←': return 27;
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case L'∟': return 28;
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case L'↔': return 29;
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case L'▲': return 30;
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case L'▼': return 31;
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case L'⌂': return 127;
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case L'Ç': return 128;
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case L'ü': return 129;
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case L'é': return 130;
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case L'â': return 131;
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case L'ä': return 132;
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case L'à': return 133;
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case L'å': return 134;
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case L'ç': return 135;
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case L'ê': return 136;
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case L'ë': return 137;
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case L'è': return 138;
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case L'ï': return 139;
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case L'î': return 140;
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case L'ì': return 141;
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case L'Ä': return 142;
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case L'Å': return 143;
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case L'É': return 144;
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case L'æ': return 145;
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case L'Æ': return 146;
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case L'ô': return 147;
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case L'ö': return 148;
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case L'ò': return 149;
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case L'û': return 150;
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case L'ù': return 151;
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case L'ÿ': return 152;
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case L'Ö': return 153;
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case L'Ü': return 154;
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case L'¢': return 155;
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case L'£': return 156;
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case L'¥': return 157;
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case L'₧': return 158;
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case L'ƒ': return 159;
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case L'á': return 160;
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case L'í': return 161;
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case L'ó': return 162;
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case L'ú': return 163;
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case L'ñ': return 164;
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case L'Ñ': return 165;
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case L'ª': return 166;
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case L'º': return 167;
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case L'¿': return 168;
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case L'⌐': return 169;
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case L'¬': return 170;
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case L'½': return 171;
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case L'¼': return 172;
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case L'¡': return 173;
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case L'«': return 174;
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case L'»': return 175;
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case L'░': return 176;
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case L'▒': return 177;
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case L'▓': return 178;
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case L'│': return 179;
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case L'┤': return 180;
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case L'╡': return 181;
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case L'╢': return 182;
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case L'╖': return 183;
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case L'╕': return 184;
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case L'╣': return 185;
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case L'║': return 186;
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case L'╗': return 187;
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case L'╝': return 188;
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case L'╜': return 189;
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case L'╛': return 190;
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case L'┐': return 191;
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case L'└': return 192;
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case L'┴': return 193;
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case L'┬': return 194;
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case L'├': return 195;
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case L'─': return 196;
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case L'┼': return 197;
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case L'╞': return 198;
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case L'╟': return 199;
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case L'╚': return 200;
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case L'╔': return 201;
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case L'╩': return 202;
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case L'╦': return 203;
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case L'╠': return 204;
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case L'═': return 205;
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case L'╬': return 206;
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case L'╧': return 207;
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case L'╨': return 208;
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case L'╤': return 209;
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case L'╥': return 210;
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case L'╙': return 211;
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case L'╘': return 212;
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case L'╒': return 213;
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case L'╓': return 214;
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case L'╫': return 215;
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case L'╪': return 216;
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case L'┘': return 217;
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case L'┌': return 218;
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case L'█': return 219;
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case L'▄': return 220;
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case L'▌': return 221;
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case L'▐': return 222;
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case L'▀': return 223;
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case L'α': return 224;
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case L'ß': return 225; /* German sharp S U+00DF */
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case L'β': return 225; /* Greek lowercase beta U+03B2 */
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case L'Γ': return 226;
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case L'π': return 227;
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case L'Σ': return 228; /* Greek uppercase sigma U+03A3 */
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case L'∑': return 228; /* n-ary summation sign U+2211 (replacement) */
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case L'σ': return 229;
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case L'µ': return 230;
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case L'τ': return 231;
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case L'Φ': return 232;
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case L'Θ': return 233;
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case L'Ω': return 234;
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case L'δ': return 235; /* Greek lowercase delta U+03B4 */
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case L'ð': return 235; /* Icelandic lowercase eth U+00F0 (replacement) */
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case L'∂': return 235; /* Partial derivative sign U+2202 (replacement) */
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case L'∞': return 236;
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case L'φ': return 237; /* Greek lowercase phi U+03C6 */
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case L'∅': return 237; /* Empty set sign U+2205 (replacement) */
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case L'ϕ': return 237; /* Greek phi symbol in italics U+03D5 (replacement) */
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case L'⌀': return 237; /* Diameter sign U+2300 (replacement) */
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case L'ø': return 237; /* Latin lowercase O with stroke U+00F8 (replacement) */
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case L'Ø': return 237; /* Latin uppercase O with stroke U+00D8 (replacement) */
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case L'ε': return 238; /* Greek lowercase epsilon U+03B5 */
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case L'∈': return 238; /* Element-of sign U+2208 */
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case L'€': return 238; /* Euro sign U+20AC */
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case L'∩': return 239;
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case L'≡': return 240;
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case L'±': return 241;
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case L'≥': return 242;
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case L'≤': return 243;
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case L'⌠': return 244;
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case L'⌡': return 245;
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case L'÷': return 246;
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case L'≈': return 247;
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case L'°': return 248;
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case L'∙': return 249;
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case L'·': return 250;
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case L'√': return 251;
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case L'ⁿ': return 252;
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case L'²': return 253;
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case L'■': return 254;
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default: return 0 <= c && c < 256 ? c : -1;
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}
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}
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__attribute__((unused))
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static const uint8_t font_replacement_character[16] =
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{
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0b00000000,
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0b00010000,
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0b00111000,
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0b01000100,
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0b10111010,
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0b10111010,
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0b11110110,
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0b11101110,
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0b11101110,
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0b11111110,
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0b01101100,
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0b00101000,
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0b00010000,
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0b00000000,
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0b00000000,
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0b00000000,
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};
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__attribute__((unused))
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static inline const uint8_t* GetCharacterFont(const uint8_t* font, int remap)
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{
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if ( remap < 0 )
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return font_replacement_character;
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return font + 16 * remap;
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}
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void Init(const char* devpath, Ref<Descriptor> slashdev);
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void SetCursor(unsigned x, unsigned y);
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const uint8_t* GetFont();
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} // namespace VGA
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} // namespace Sortix
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#endif
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