mirror of
https://github.com/vivier/EMILE.git
synced 2024-11-14 22:04:43 +00:00
524 lines
8.8 KiB
C
524 lines
8.8 KiB
C
/*
|
|
*
|
|
* (c) 2004 Laurent Vivier <LaurentVivier@wanadoo.fr>
|
|
*
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#include <macos/lowmem.h>
|
|
#include <macos/quickdraw.h>
|
|
#include <libmacos.h>
|
|
|
|
#include "misc.h"
|
|
#include "vga.h"
|
|
|
|
QDGlobals qd;
|
|
|
|
typedef struct vga_handler {
|
|
|
|
unsigned char* video;
|
|
unsigned char* base;
|
|
unsigned long row_bytes; /* in bytes */
|
|
unsigned long depth; /* 4, 8, 16 or 32 */
|
|
unsigned long width; /* in pixels */
|
|
unsigned long height;
|
|
|
|
unsigned long siz_w, siz_h;
|
|
unsigned long pos_x, pos_y;
|
|
|
|
} vga_handler_t ;
|
|
|
|
static unsigned char bits_depth2[16] = {
|
|
0x00, /* 0 : 0000 -> 00000000 */
|
|
0x03, /* 1 : 0001 -> 00000011 */
|
|
0x0c, /* 2 : 0010 -> 00001100 */
|
|
0x0f, /* 3 : 0011 -> 00001111 */
|
|
0x30, /* 4 : 0100 -> 00110000 */
|
|
0x33, /* 5 : 0101 -> 00110011 */
|
|
0x3c, /* 6 : 0110 -> 00111100 */
|
|
0x3f, /* 7 : 0111 -> 00111111 */
|
|
0xc0, /* 8 : 1000 -> 11000000 */
|
|
0xc3, /* 9 : 1001 -> 11000011 */
|
|
0xcc, /* 10 : 1010 -> 11001100 */
|
|
0xcf, /* 11 : 1011 -> 11001111 */
|
|
0xf0, /* 12 : 1100 -> 11110000 */
|
|
0xf3, /* 13 : 1101 -> 11110011 */
|
|
0xfc, /* 14 : 1110 -> 11111100 */
|
|
0xff /* 15 : 1111 -> 11111111 */
|
|
};
|
|
|
|
static unsigned char bits_depth4[4] = {
|
|
0x00, /* 0 : 00 -> 00000000 */
|
|
0x0f, /* 1 : 01 -> 00001111 */
|
|
0xf0, /* 2 : 10 -> 11110000 */
|
|
0xFF /* 3 : 11 -> 11111111 */
|
|
};
|
|
|
|
static unsigned char bits_depth8[2] = {
|
|
0x00, /* 0 : 0 -> 00000000 */
|
|
0xff /* 0 : 1 -> 11111111 */
|
|
};
|
|
|
|
static vga_handler_t vga =
|
|
{
|
|
.video = 0,
|
|
.base = 0,
|
|
.row_bytes = 0,
|
|
.depth = 0,
|
|
.width = 0,
|
|
.height = 0,
|
|
.siz_w = 0,
|
|
.siz_h = 0,
|
|
.pos_x = 0,
|
|
.pos_y = 0
|
|
};
|
|
|
|
static unsigned long cursor_save_x, cursor_save_y;
|
|
|
|
#define CURSOR_POS 0
|
|
#define CURSOR_HIGH 16
|
|
|
|
static int cursor_on = 0;
|
|
static int cursor_state = 0;
|
|
|
|
extern unsigned char* font_get(int c);
|
|
|
|
static void
|
|
draw_cursor(void)
|
|
{
|
|
int l,w;
|
|
unsigned char *base;
|
|
unsigned long x_base;
|
|
unsigned long y_base;
|
|
|
|
y_base = vga.row_bytes * vga.pos_y * 16;
|
|
x_base = vga.pos_x * vga.depth;
|
|
|
|
base = vga.base + y_base + x_base;
|
|
|
|
base += CURSOR_POS * vga.row_bytes;
|
|
for (l = 0 ; l < CURSOR_HIGH ; l++)
|
|
{
|
|
for (w = 0; w < vga.depth; w++)
|
|
base[w] ^= 0xFF;
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void vga_cursor(int state)
|
|
{
|
|
if (cursor_state != state)
|
|
{
|
|
draw_cursor();
|
|
cursor_state = state;
|
|
}
|
|
}
|
|
|
|
void vga_cursor_refresh(void)
|
|
{
|
|
if (!cursor_on)
|
|
return;
|
|
|
|
if (Ticks % 60 < 30)
|
|
vga_cursor(0);
|
|
else
|
|
vga_cursor(1);
|
|
}
|
|
|
|
void vga_cursor_on(void)
|
|
{
|
|
cursor_on = 1;
|
|
vga_cursor_refresh();
|
|
}
|
|
|
|
void vga_cursor_off(void)
|
|
{
|
|
cursor_on = 0;
|
|
vga_cursor(0);
|
|
}
|
|
|
|
void vga_cursor_save(void)
|
|
{
|
|
cursor_save_x = vga.pos_x;
|
|
cursor_save_y = vga.pos_y;
|
|
}
|
|
|
|
void vga_cursor_restore(void)
|
|
{
|
|
vga_cursor(0);
|
|
vga.pos_x = cursor_save_x;
|
|
vga.pos_y = cursor_save_y;
|
|
vga_cursor(1);
|
|
}
|
|
|
|
static void
|
|
draw_byte_1(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
*base = ~(*glyph++);
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte_2(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
int bits;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
bits = ~(*glyph++);
|
|
|
|
base[1] = bits_depth2[bits & 0x0F];
|
|
bits = bits >> 4;
|
|
base[0] = bits_depth2[bits & 0x0F];
|
|
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte_4(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
int bits;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
bits = ~(*glyph++);
|
|
|
|
base[3] = bits_depth4[bits & 0x03];
|
|
bits = bits >> 2;
|
|
|
|
base[2] = bits_depth4[bits & 0x03];
|
|
bits = bits >> 2;
|
|
|
|
base[1] = bits_depth4[bits & 0x03];
|
|
bits = bits >> 2;
|
|
|
|
base[0] = bits_depth4[bits & 0x03];
|
|
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte_8(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
int bits;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
bits = ~(*glyph++);
|
|
|
|
base[7] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[6] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[5] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[4] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[3] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[2] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[1] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
base[0] = bits_depth8[bits & 0x01];
|
|
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte_16(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
int bits;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
bits = *glyph++;
|
|
|
|
base[15] = base[14] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[13] = base[12] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[11] = base[10] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[9] = base[8] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[7] = base[6] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[5] = base[4] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[3] = base[2] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[1] = base[0] = bits_depth8[bits & 0x01];
|
|
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte_24(unsigned char *glyph, unsigned char *base)
|
|
{
|
|
int l;
|
|
int bits;
|
|
|
|
for (l = 0 ; l < 16; l++)
|
|
{
|
|
bits = *glyph++;
|
|
|
|
base[23] = base[22] = base[21] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[20] = base[19] = base[18] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[17] = base[16] = base[15] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[14] = base[13] = base[12] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[11] = base[10] = base[9] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[8] = base[7] = base[6] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[5] = base[4] = base[3] = bits_depth8[bits & 0x01];
|
|
bits = bits >> 1;
|
|
|
|
base[2] = base[1] = base[0] = bits_depth8[bits & 0x01];
|
|
|
|
base += vga.row_bytes;
|
|
}
|
|
}
|
|
|
|
static void
|
|
draw_byte(unsigned char c, unsigned long locX, unsigned long locY)
|
|
{
|
|
unsigned char *base;
|
|
unsigned char *glyph;
|
|
unsigned long x_base;
|
|
unsigned long y_base;
|
|
|
|
glyph = font_get(c);
|
|
|
|
y_base = vga.row_bytes * locY * 16;
|
|
x_base = locX * vga.depth;
|
|
|
|
base = vga.base + y_base + x_base;
|
|
|
|
switch(vga.depth)
|
|
{
|
|
case 1:
|
|
draw_byte_1(glyph, base);
|
|
break;
|
|
case 2:
|
|
draw_byte_2(glyph, base);
|
|
break;
|
|
case 4:
|
|
draw_byte_4(glyph, base);
|
|
break;
|
|
case 8:
|
|
draw_byte_8(glyph, base);
|
|
break;
|
|
case 16:
|
|
draw_byte_16(glyph, base);
|
|
break;
|
|
case 24:
|
|
draw_byte_24(glyph, base);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void vga_clear();
|
|
|
|
static void
|
|
vga_scroll()
|
|
{
|
|
unsigned long j;
|
|
unsigned long i;
|
|
unsigned long *src;
|
|
unsigned long *dst;
|
|
unsigned long bg32;
|
|
|
|
/* move up the screen */
|
|
|
|
src = (unsigned long *)(vga.base + (vga.row_bytes << 4));
|
|
dst = (unsigned long *)vga.base;
|
|
|
|
for (j = 0; j < vga.siz_h - 1; j++)
|
|
for (i = 0; i < (vga.row_bytes<<2); i++)
|
|
*dst++ = *src++;
|
|
|
|
/* clear last line */
|
|
|
|
if (vga.depth <= 8)
|
|
bg32 = 0xffffffff;
|
|
else
|
|
bg32 = 0x00000000;
|
|
|
|
for (j = 0; j < (vga.row_bytes << 2); j++)
|
|
*dst++ = bg32;
|
|
}
|
|
|
|
int
|
|
vga_init()
|
|
{
|
|
int ret;
|
|
|
|
InitGraf(&qd.thePort);
|
|
|
|
ret = glue_display_properties((unsigned long*)&vga.base,
|
|
&vga.row_bytes,
|
|
&vga.width,
|
|
&vga.height,
|
|
&vga.depth,
|
|
(unsigned long*)&vga.video);
|
|
if (ret)
|
|
{
|
|
vga.base = qd.screenBits.baseAddr;
|
|
vga.row_bytes = qd.screenBits.rowBytes;
|
|
vga.width = qd.screenBits.bounds.right -
|
|
qd.screenBits.bounds.left;
|
|
vga.height = qd.screenBits.bounds.bottom -
|
|
qd.screenBits.bounds.top;
|
|
vga.depth = 1;
|
|
}
|
|
|
|
vga.pos_x = 0;
|
|
vga.pos_y = 0;
|
|
vga.siz_w = vga.width / 8;
|
|
vga.siz_h = vga.height / 16;
|
|
|
|
vga_clear();
|
|
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
vga_put(char c)
|
|
{
|
|
vga_cursor(0);
|
|
|
|
switch(c) {
|
|
case '\r':
|
|
vga.pos_x = 0;
|
|
break;
|
|
case '\n':
|
|
vga.pos_x = 0;
|
|
vga.pos_y++;
|
|
break;
|
|
case '\b':
|
|
if (vga.pos_x > 0)
|
|
vga.pos_x--;
|
|
else if (vga.pos_y > 0)
|
|
{
|
|
vga.pos_y--;
|
|
vga.pos_x = vga.siz_w - 1;
|
|
}
|
|
break;
|
|
default:
|
|
draw_byte((unsigned char)c, vga.pos_x++, vga.pos_y);
|
|
if (vga.pos_x >= vga.siz_w) {
|
|
vga.pos_x = 0;
|
|
vga.pos_y++;
|
|
}
|
|
}
|
|
while (vga.pos_y >= vga.siz_h) {
|
|
vga_scroll();
|
|
vga.pos_y--;
|
|
}
|
|
|
|
vga_cursor_refresh();
|
|
}
|
|
|
|
static void
|
|
vga_clear()
|
|
{
|
|
int i,j;
|
|
unsigned long row;
|
|
unsigned char bg;
|
|
unsigned long bg32;
|
|
unsigned long *base;
|
|
unsigned char *next;
|
|
|
|
vga_cursor(0);
|
|
|
|
if (vga.depth <= 8)
|
|
{
|
|
bg = 0xff;
|
|
bg32 = 0xffffffff;
|
|
}
|
|
else
|
|
{
|
|
bg = 0x00;
|
|
bg32 = 0x00000000;
|
|
}
|
|
|
|
for (j = 0, row = 0; j < vga.height; j++)
|
|
{
|
|
base = (unsigned long*)(vga.base + row);
|
|
row += vga.row_bytes;
|
|
|
|
for (i = 0; i < (vga.row_bytes >> 2); i++)
|
|
*base++ = bg32;
|
|
next = (unsigned char*)base;
|
|
for (i = i << 2 ; i < vga.row_bytes; i++)
|
|
*next++ = bg;
|
|
}
|
|
|
|
vga.pos_x = 0;
|
|
vga.pos_y = 0;
|
|
|
|
vga_cursor_refresh();
|
|
}
|
|
|
|
unsigned long vga_get_videobase()
|
|
{
|
|
return (unsigned long)vga.base;
|
|
}
|
|
|
|
unsigned long vga_get_row_bytes()
|
|
{
|
|
return vga.row_bytes;
|
|
}
|
|
|
|
unsigned long vga_get_depth()
|
|
{
|
|
return vga.depth;
|
|
}
|
|
|
|
unsigned long vga_get_width()
|
|
{
|
|
return vga.width;
|
|
}
|
|
|
|
unsigned long vga_get_height()
|
|
{
|
|
return vga.height;
|
|
}
|
|
|
|
unsigned long vga_get_video()
|
|
{
|
|
return (unsigned long)vga.video;
|
|
}
|