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dos33fsprogs/mode7/scroller.c
Vince Weaver 50cc198a02 xmas2018: make scroller use lz4 compression instead of RLE 
saves 300 bytes or so
2018-12-18 13:43:33 -05:00

681 lines
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
static unsigned char font[256][9]={
{0,0,0,0,0,0,0,0,0}, // 0
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0}, // 8
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0}, // 16
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0}, // 24
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{4,0,0,0,0,0,0,0,0}, // 32 ' '
{4,
0x00,
0xe0, // ******
0xe0, // ******
0x40, // **
0x40, // **
0x00, //
0x40, // **
0x40, // **
},
{0,0,0,0,0,0,0,0,0}, // 34
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0}, // 40
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{2,
0x00,
0x00, //
0x00, //
0x00, //
0x00, //
0x00, //
0x80, // **
0x80, // **
},
{0,0,0,0,0,0,0,0,0},
{4, // 48
0x00,
0x40, // **
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
0x40, // **
},
{4,
0x00,
0x40, // **
0xc0, // ****
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0xe0, // ******
},
{4,
0x00,
0x40, // **
0xa0, // ** **
0x20, // **
0x40, // **
0x40, // **
0x80, // **
0xe0, // ******
},
/*
**** ** ** ****** **** ******
** ** ** ** ** **
** ** ** ** ** **
** ****** **** **** **
** ** ** ** ** **
** ** ** ** ** **
**** ** **** ** **
*/
{4,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
0x00,
},
{4,0,0,0,0,0,0,0,0},
{4,0,0,0,0,0,0,0,0},
{4,0,0,0,0,0,0,0,0},
{4,0,0,0,0,0,0,0,0},
{4, // 56
0x00,
0x40, // **
0xa0, // ** **
0xa0, // ** **
0x40, // **
0xa0, // ** **
0xa0, // ** **
0x40, // **
},
{4,
0x00,
0x60, // ****
0xc0, // ** **
0xc0, // ** **
0x60, // ****
0x20, // **
0x20, // **
0x20, // **
},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0}, //64
{5,
0x00,
0x60, // ****
0x90, // ** **
0x90, // ** **
0xf0, // ********
0x90, // ** **
0x90, // ** **
0x90, // ** **
},
{5,
0x00,
0xe0, // ******
0x90, // ** **
0x90, // ** **
0xe0, // ******
0x90, // ** **
0x90, // ** **
0xe0, // ******
},
{5,
0x00,
0x70, // ******
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0x70, // ******
},
{5,
0x00,
0xc0, // ****
0xa0, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0xa0, // ** **
0xc0, // ****
},
{5,
0x00,
0xf0, // ********
0x80, // **
0x80, // **
0xe0, // ******
0x80, // **
0x80, // **
0xf0, // ********
},
{5,
0x00,
0xf0, // ********
0x80, // **
0x80, // **
0xe0, // ******
0x80, // **
0x80, // **
0x80, // **
},
{0,0,0,0,0,0,0,0,0},
/*
****
**
**
** ****
** **
** **
****
*/
{5,
0x00,
0x90, // ** **
0x90, // ** **
0x90, // ** **
0xf0, // ********
0x90, // ** **
0x90, // ** **
0x90, // ** **
},
{4,
0x00,
0xe0, // ******
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0xe0, // ******
},
{0,0,0,0,0,0,0,0,0},
{0,0,0,0,0,0,0,0,0},
/*
**** ** **
** ** **
** ** **
** ****
** ** **
** ** ** **
**** ** **
*/
{4,
0x00,
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0xe0, // ******
},
{6,
0x00,
0x88, // ** **
0xd8, // **** ****
0xa8, // ** ** **
0x88, // ** **
0x88, // ** **
0x88, // ** **
0x88, // ** **
},
{5,
0x00,
0x90, // ** **
0xd0, // **** **
0xd0, // **** **
0xb0, // ** ****
0xb0, // ** ****
0x90, // ** **
0x90, // ** **
},
{5,
0x00,
0x60, // ****
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x60, // ****
},
{5,
0x00,
0xe0, // ******
0x90, // ** **
0x90, // ** **
0xe0, // ******
0x80, // **
0x80, // **
0x80, // **
},
{0,0,0,0,0,0,0,0,0},
/*
****
** **
** **
** **
** **
** ****
** **
*/
{5,
0x00,
0xe0, // ******
0x90, // ** **
0x90, // ** **
0xe0, // ******
0x90, // ** **
0x90, // ** **
0x90, // ** **
},
{5,
0x00,
0x70, // ******
0x80, // **
0x80, // **
0x60, // ****
0x10, // **
0x10, // **
0xe0, // ******
},
{4,
0x00,
0xe0, // ******
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0x40, // **
},
{5,
0x00,
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x60, // ****
},
{5,
0x00,
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x90, // ** **
0x50, // ** **
0x50, // ** **
0x20, // **
},
{6,
0x00,
0x88, // ** **
0x88, // ** **
0x88, // ** **
0x88, // ** **
0xa8, // ** ** **
0xd8, // **** ****
0x88, // ** **
},
{4,
0x00,
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
0x40, // **
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
},
{4,
0x00,
0xa0, // ** **
0xa0, // ** **
0xa0, // ** **
0x40, // **
0x40, // **
0x40, // **
0x40, // **
},
{0,0,0,0,0,0,0,0,0},
/*
**********
**
**
**
**
**
**********
*/
{3,
0x00,
0xc0, // ****
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0x80, // **
0xc0, // ****
},
{0,0,0,0,0,0,0,0,0},
{3,
0x00,
0xc0, // ****
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0x40, // **
0xc0, // ****
},
};
static int color_map[4][8]={
{0x2,0x2,0x6,0xe,0xf,0xe,0x6,0x2}, // Blue
{0x4,0x4,0xc,0xd,0xf,0xd,0xc,0x4}, // Green
{0x1,0x1,0x3,0xb,0xf,0xb,0x3,0x1}, // Red
{0x5,0x5,0x7,0xf,0xf,0xf,0x7,0x5}, // Grey
};
static int runlen[4]={0,0,0,0},last_color[4]={0,0,0,0};
static int new_size=0;
static unsigned char row[4][256];
static int rle_compress(int color, int j) {
int need_comma=0;
if (color==last_color[j]) {
runlen[j]++;
}
else {
// printf("Run of color %d length %d\n",
// last_color[j],runlen[j]);
if (runlen[j]==0) ; // first color, skip
if (runlen[j]==1) {
printf("$%02X",last_color[j]);
new_size++;
}
if (runlen[j]==2) {
printf("$%02X,$%02X",last_color[j],last_color[j]);
new_size+=2;
}
if ((runlen[j]>2) && (runlen[j]<16)) {
printf("$%02X,$%02X",0xa0 | (runlen[j]),
last_color[j]);
new_size+=2;
}
/* We could in theory compress up to 272 */
/* but we leave it at 256 to make the decode easier */
if ((runlen[j]>15) && (runlen[j]<256)) {
new_size+=3;
printf("$%02X,$%02X,$%02X",0xa0,
runlen[j],last_color[j]);
}
if (runlen[j]>256) {
printf("Too big!\n");
exit(1);
}
runlen[j]=1;
need_comma=1;
}
return need_comma;
}
static int vmw_logo[4][18]={
{0x10,0x10,0x10,0x10,0x10,0x40, 0x20,0x20,0x20,0x20,0x20,0x40, 0x20,0x20,0x20,0x20,0x20,0x00},
{0x11,0x11,0x11,0x11,0x11,0x44, 0x22,0x22,0x22,0x22,0x22,0x44, 0x22,0x22,0x22,0x22,0x22,0x00},
{0x00,0x11,0x11,0x11,0x44,0x44, 0x44,0x22,0x22,0x22,0x44,0x44, 0x44,0x22,0x22,0x22,0x00,0x00},
{0x00,0x00,0x11,0x44,0x44,0x44, 0x44,0x44,0x22,0x44,0x44,0x44, 0x44,0x44,0x22,0x00,0x00,0x00},
};
static int rainbow_logo[4][6]={
{0x00,0x00,0x00,0xc0,0x0c,0x00 },
{0xd0,0xdc,0xdc,0xdc,0x0c,0x00 },
{0x19,0x19,0x19,0x19,0x10,0x00 },
{0x02,0x62,0x62,0x62,0x02,0x00 },
};
static int xmas_tree[4][5]={
{0x00,0x00,0x4d,0x00,0x00 },
{0x00,0x44,0xd4,0x4d,0x00 },
{0x40,0x4d,0x44,0x44,0x40 },
{0x00,0x10,0x18,0x10,0x00 },
};
static int holly[4][9]={
{0x00,0x00,0x00,0x10,0x11,0x10,0x00,0x00,0x00 },
{0x00,0xc0,0x4c,0xc1,0x11,0xc1,0x4c,0xc0,0x00 },
{0xc0,0x4c,0xc4,0xcc,0x00,0xcc,0xc4,0x4c,0xc0 },
{0xcc,0xc4,0x0c,0x00,0x00,0x00,0x0c,0xc4,0xcc },
};
int main(int argc, char **argv) {
//char string[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
// char string[]=" \001DEATER \002WAS \003HERE!!! ";
// char string[]=" \001BY DEATER... \002A \010 PRODUCTION ";
// char string[]=" \003\011APPLE ][ FOREVER\011 ";
char string[]=" \012 \001MERRY XMAS 2018 \003FROM DEATER \013 ";
int length=0,width=0,x,y,i,j;
int color,color1,color2;
int which_color=0;
int need_comma;
for(i=0;i<strlen(string);i++) {
if (string[i]<5) { which_color=string[i]-1; continue;}
/* VMW logo */
if (string[i]==8) {
width=18;
// ********** ********** **********
// ********** ********** **********
// ********** ********** **********
// ****** ****** ******
// ****** ****** ******
// ** ** **
// ** ** **
for(x=0;x<width;x++) {
for(j=0;j<4;j++) {
row[j][length]=vmw_logo[j][x];
}
length++;
}
continue;
}
/* rainbow apple logo */
if (string[i]==9) {
width=6;
for(x=0;x<width;x++) {
for(j=0;j<4;j++) {
row[j][length]=rainbow_logo[j][x];
}
length++;
}
continue;
}
/* christmas tree */
if (string[i]==10) {
width=5;
for(x=0;x<width;x++) {
for(j=0;j<4;j++) {
row[j][length]=xmas_tree[j][x];
}
length++;
}
continue;
}
/* holly */
if (string[i]==11) {
width=9;
for(x=0;x<width;x++) {
for(j=0;j<4;j++) {
row[j][length]=holly[j][x];
}
length++;
}
continue;
}
width=font[(int)string[i]][0];
for(x=0;x<width;x++) {
for(j=0;j<4;j++) {
color=!!(font[(int)string[i]][1+j*2]&(0x80>>x));
color1=color?color_map[which_color][0+j*2]:0;
color=!!(font[(int)string[i]][2+j*2]&(0x80>>x));
color2=color?(color_map[which_color][1+j*2])<<4:0;
color=color1|color2;
row[j][length]=color;
if (color1==0xa) {
printf("Error! Can't use grey2!\n");
exit(0);
}
}
length++;
}
}
printf("; Original size = %d bytes\n",length*4);
#if 0
printf("scroll_length: .byte %d\n",length);
for(y=0;y<4;y++) {
printf("scroll_row%d:\n",y+1);
printf("\t.byte ");
for(x=0;x<length;x++) {
printf("$%02X",row[y][x]);
if (x!=length-1) printf(",");
}
printf("\n");
}
#endif
printf("a2_scroll:\n");
printf("; scroll_length:\n.byte %d\n",length);
for(y=0;y<4;y++) {
//printf("scroll_row%d:\n",y+1);
printf("\t.byte ");
for(x=0;x<256;x++) {
need_comma=rle_compress(row[y][x],y);
if ((need_comma) && (x!=length-1)) printf(",");
last_color[y]=row[y][x];
}
rle_compress(-1,y);
printf("\n");
}
printf("\t.byte $A1\n");
new_size++;
printf("; Compressed size = %d bytes\n",new_size);
int fd;
fd=open("scroll.raw",O_CREAT|O_WRONLY,0666);
if (fd<0) {
fprintf(stderr,"Error opening\n");
exit(1);
}
for(y=0;y<4;y++) {
write(fd,&row[y],256);
}
close(fd);
return 0;
}
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