cos2000v2/lib/video.c

510 lines
11 KiB
C
Executable File

#include "vga.h"
#include "video.h"
#include "stdarg.h"
console vc[8] = {
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
,
{0x07, 0, 0, 0, 0, 0, 0, 0}
};
u8 usedvc = 0;
/*******************************************************************************/
/* Fixe l'attribut courant */
void setattrib(u8 att)
{
static const u8 ansitovga[] = {
0, 4, 2, 6, 1, 5, 3, 7
};
u8 tempattr;
tempattr = vc[usedvc].attrib;
if (att == 0)
tempattr = 0x07; /* Couleur Grise sur fond noir */
else if (att == 5)
tempattr |= 0x80;
else if (att == 7)
tempattr = ((tempattr & 0x0F) << 4) + ((tempattr & 0xF0) >> 4);
else if (att == 8)
tempattr = 0;
else if (att == 1)
tempattr |= 0x08; /* Forte intensité */
else if (att >= 30 && att <= 37) {
att = ansitovga[att - 30];
tempattr = (tempattr & ~0x07) | att; /* couleur de premier plan */
} else if (att >= 40 && att <= 47) {
att = ansitovga[att - 40] << 4;
tempattr = (tempattr & ~0x70) | att; /* couleur de fond */
}
vc[usedvc].attrib = tempattr;
}
/*******************************************************************************/
/* gere l'ansi */
bool makeansi(u8 c)
{
/* state machine to handle the escape sequences */
switch (vc[usedvc].ansi) {
case 0:
/* ESC -- next state */
if (c == 0x1B) {
vc[usedvc].ansi++;
return 1; /* "I handled it" */
}
break;
/* ESC */
case 1:
if (c == '[') {
vc[usedvc].ansi++;
vc[usedvc].param1 = 0;
return 1;
}
break;
/* ESC[ */
case 2:
if (isdigit(c)) {
vc[usedvc].param1 = vc[usedvc].param1 * 10 + c - '0';
return 1;
} else if (c == ';') {
vc[usedvc].ansi++;
vc[usedvc].param2 = 0;
return 1;
}
/* ESC[2J -- efface l'ecran */
else if (c == 'J') {
if (vc[usedvc].param1 == 2) {
fill(vc[usedvc].attrib);
vc[usedvc].cursX = 0;
vc[usedvc].cursY = 0;
gotoscr(0, 0);
vc[usedvc].ansi = 0;
return 1;
}
}
/* ESC[num1m -- met l'attribut num1 */
else if (c == 'm') {
setattrib(vc[usedvc].param1);
vc[usedvc].ansi = 0;
return 1;
}
/* ESC[num1A -- bouge le curseur de num1 vers le haut */
else if (c == 'A') {
vc[usedvc].cursY -= vc[usedvc].param1;
if (vc[usedvc].cursY < 0)
vc[usedvc].cursY = 0;
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
return 1;
}
/* ESC[num1B -- bouge le curseur de num1 vers le bas */
else if (c == 'B') {
vc[usedvc].cursY += vc[usedvc].param1;
if (vc[usedvc].cursY >= getyres() - 1)
vc[usedvc].cursY = getyres();
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
return 1;
}
/* ESC[num1D -- bouge le curseur de num1 vers la gauche */
else if (c == 'D') {
vc[usedvc].cursX -= vc[usedvc].param1;
if (vc[usedvc].cursX < 0)
vc[usedvc].cursX = 0;
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
return 1;
}
/* ESC[num1C -- bouge le curseur de num1 vers la droite */
else if (c == 'C') {
vc[usedvc].cursX += vc[usedvc].param1;
if (vc[usedvc].cursX >= getxres() - 1)
vc[usedvc].cursX = getxres();
vc[usedvc].ansi = 0;
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
return 1;
}
break;
/* ESC[num1; */
case 3:
if (isdigit(c)) {
vc[usedvc].param2 = vc[usedvc].param2 * 10 + c - '0';
return 1;
} else if (c == ';') {
vc[usedvc].ansi++;
vc[usedvc].param3 = 0;
return 1;
}
/* ESC[num1;num2H ou ESC[num1;num2f-- bouge le curseur en num1,num2 */
else if ((c == 'H') || (c == 'f')) {
/* Remet la position du curseur matériel a num1,num2 */
gotoscr(vc[usedvc].param2, vc[usedvc].param1);
/* Remet la position du curseur logiciel a num1,num2 */
vc[usedvc].cursX = vc[usedvc].param2;
vc[usedvc].cursY = vc[usedvc].param1;
vc[usedvc].ansi = 0;
return 1;
}
/* ESC[num1;num2m -- met les attributs num1,num2 */
else if (c == 'm') {
setattrib(vc[usedvc].param1);
setattrib(vc[usedvc].param2);
vc[usedvc].ansi = 0;
return 1;
}
break;
/* ESC[num1;num2;num3 */
case 4:
if (isdigit(c)) {
vc[usedvc].param3 = vc[usedvc].param3 * 10 + c - '0';
return 1;
}
/* ESC[num1;num2;num3m -- met les attributs num1,num2,num3 */
else if (c == 'm') {
setattrib(vc[usedvc].param1);
setattrib(vc[usedvc].param2);
setattrib(vc[usedvc].param3);
vc[usedvc].ansi = 0;
return 1;
}
break;
/* Mauvais etat >> reset */
default:
vc[usedvc].ansi = 0;
break;
}
vc[usedvc].ansi = 0;
return 0; /* Ansi fini ;) */
}
/*******************************************************************************/
/* Change la console en cours d'utilisation */
void changevc(u8 avc)
{
usedvc = avc;
showpage(usedvc);
setpage(usedvc);
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
}
/*******************************************************************************/
/* affiche un caractère a l'écran */
void putchar(u8 thechar)
{
showpage(usedvc);
setpage(usedvc);
if (makeansi(thechar))
return;
switch (thechar) {
case 0x11:
if (vc[usedvc].cursY > 0)
vc[usedvc].cursY--;
break;
case 0x12:
if (vc[usedvc].cursY < getyres() - 1)
vc[usedvc].cursY++;
break;
case 0x13:
if (vc[usedvc].cursX > 0)
vc[usedvc].cursX--;
break;
case 0x14:
if (vc[usedvc].cursX < getxres() - 1)
vc[usedvc].cursX++;
break;
case 0x2:
vc[usedvc].cursX = 0;
vc[usedvc].cursY = 0;
break;
case 0x3:
vc[usedvc].cursX = 0;
vc[usedvc].cursY = getyres() - 1;
break;
case 0x19:
vc[usedvc].cursX = getxres() - 1;
break;
case '\b':
if (vc[usedvc].cursX == 0) {
if (vc[usedvc].cursY > 0) {
vc[usedvc].cursX = getxres() - 1;
vc[usedvc].cursY--;
}
} else {
vc[usedvc].cursX--;
}
showchar(vc[usedvc].cursX, vc[usedvc].cursY, ' ',
vc[usedvc].attrib);
break;
case '\t':
vc[usedvc].cursX = (vc[usedvc].cursX + 8) & ~(8 - 1);
break;
case '\n':
vc[usedvc].cursX = 0;
break;
case '\r':
vc[usedvc].cursX = 0;
vc[usedvc].cursY++;
break;
default:
if (thechar >= ' ') {
showchar(vc[usedvc].cursX, vc[usedvc].cursY, thechar,
vc[usedvc].attrib);
vc[usedvc].cursX++;
}
break;
}
if (vc[usedvc].cursX >= getxres()) {
vc[usedvc].cursX = 0;
vc[usedvc].cursY++;
}
if (vc[usedvc].cursY >= getyres()) {
scroll(1, vc[usedvc].attrib);
vc[usedvc].cursY = getyres() - 1;
}
gotoscr(vc[usedvc].cursX, vc[usedvc].cursY);
}
/*******************************************************************************/
/* affiche une chaine de caractère a l'écran */
u32 print(u8 * string)
{
u8 *source;
u32 i=0;
source = string;
while (*source != 0) {
putchar(*source++);
i++;
}
return i;
}
/*******************************************************************************/
# define buffersize 1024
/* affiche une chaine de caractère formaté a l'ecran */
u32 printf(const u8 *string, ...)
{
va_list args;
u32 sizes[]={0xFF,0xFFFF,0xFFFFFFFF};
u8 strbase2[] = "b\000";
u8 strbase8[] = "o\000";
u8 strbase16[] = "h\000";
u8 hexadecimal[]="*0x\000";
u8 achar,temp;
u8 asize,charadd;
u8 buffer[buffersize];
u8 *str = string;
u8 *strtemp;
u32 i = 0, counter = 0;
u32 num;
bool flag=false;
va_start(args, string);
for (achar = *str; achar != '\000'; i++, achar = *(str + i))
{
if (achar != '%' && !flag)
{
putchar(achar);
counter++;
asize=2;
charadd=0xFF;
}
else if (achar == '%' || flag)
{
if (!flag) ++i;
achar = *(str + i);
switch(achar)
{
case '0':
charadd='0';
flag=true;
break;
case ' ':
charadd=' ';
flag=true;
break;
case 'h':
asize--;
flag=true;
break;
case 'l':
asize++;
flag=true;
break;
case 'u':
num = (u32)va_arg(args, int);
if (charadd==0xFF)
charadd='0';
itoa(num, &buffer, 10, sizes[asize], charadd);
counter += print(&buffer);
flag=false;
break;
case 'o':
num = (u32)va_arg(args, int);
if (charadd==0xFF)
charadd='0';
itoa(num, &buffer, 8, sizes[asize], charadd);
counter += print(&buffer)+1;
print(&strbase8);
flag=false;
break;
case 'c':
temp = (u8)va_arg(args, int);
putchar(temp);
counter++;
flag=false;
break;
case 'd':
case 'i':
num = (int)va_arg(args, int);
if (charadd==0xFF)
charadd=' ';
sitoa(num, &buffer, sizes[asize]);
counter += print(&buffer);
flag=false;
break;
case 's':
strtemp = (u8 *)va_arg(args, u8 *);
counter += print(strtemp);
flag=false;
break;
case 'p':
num = (u32)va_arg(args, int);
if (charadd==0xFF)
charadd='0';
print(&hexadecimal);
itoa(num, buffer, 16, sizes[asize], '0');
counter += print(&buffer)+2;
flag=false;
break;
case 'x':
case 'X':
num = (u32)va_arg(args, int);
if (charadd==0xFF)
charadd='0';
itoa(num, &buffer, 16, sizes[asize], charadd);
if (achar=='X')
strtoupper(&buffer);
counter += print(&buffer)+1;
print(&strbase16);
flag=false;
break;
case 'b':
num = (u32)va_arg(args, int);
if (charadd==0xFF)
charadd='0';
itoa(num, &buffer, 2, sizes[asize], charadd);
counter += print(&buffer)+1;
print(&strbase2);
flag=false;
break;
default:
break;
}
}
}
va_end(args);
return counter;
}
/*******************************************************************************/
/* converti un entier non signé en chaine de caractère */
u8* itoa(u32 orignum, u8* str, u8 base, u32 dim, u8 achar)
{
u32 sizes[]={0xFF,0xFFFF,0xFFFFFFFF};
u8 *pointer = str, i, size=0;
u32 num=orignum;
num&=dim;
if (num == 0 && (achar==0))
{
*(pointer++) = '0';
*pointer = '\000';
return str;
}
switch (base)
{
case 2:
size=log2(dim);
break;
case 8:
size=log2(dim)/2;
break;
case 10:
size=log10(dim);
break;
case 16:
size=log2(dim)/4;
break;
}
for(i=0;i<size;i++)
{
u32 result = num % (u32)base;
*(pointer++) = (result > 9)? (result-10) + 'a' : result + '0';
num = num / (u32)base;
if ((num==0) && (achar==0))
break;
}
*pointer = '\000';
strinvert(str);
return str;
}
/*******************************************************************************/
/* converti un entier en chaine de caractère */
u8* sitoa(int num, u8* str, u32 dim)
{
u8 *pointer = str;
bool isNegative = false;
num&=dim;
if (num == 0)
{
*pointer++ = '0';
*pointer = '\000';
return str;
}
if (num < 0)
{
isNegative = true;
num = -num;
}
while (num != 0)
{
u32 result = num % 10;
*(pointer++) = (result > 9)? (result-10) + 'a' : result + '0';
num = num/ 10;
}
if (isNegative)
*(pointer++) = '-';
*pointer = '\000';
strinvert(str);
return str;
}