85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* arrow.c
|
|
* (c) 2001 Karel 'Clock' Kulhavy
|
|
* This program is a part of Links project.
|
|
* It takes a 32x? png image (truecolor one) and puts stdout a hex representation.
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <png.h>
|
|
|
|
double r[256],g[256],b[256];
|
|
unsigned char rc[256],gc[256],bc[256];
|
|
double red_thr=130, green_thr=78, blue_thr=33;
|
|
double red_gamma=2000,green_gamma=2000,blue_gamma=2000;
|
|
|
|
void print_row_hex(FILE *f, unsigned char *buf, int n)
|
|
{
|
|
int val1=0, val0=0, a;
|
|
|
|
for (a=0;a<n;a++){
|
|
val1<<=1;
|
|
if (*buf==255&&buf[1]==255&&buf[2]==255)val1|=1;
|
|
val0<<=1;
|
|
if (!*buf&&!buf[1]&&!buf[2])val0|=1;
|
|
buf+=3;
|
|
}
|
|
fprintf(f,"\t0x%08xU,0x%08xU,\n", val0, val1);
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int x,y;
|
|
unsigned char* image;
|
|
png_structp png_ptr_read;
|
|
png_infop info_ptr_read;
|
|
FILE *in_file, *out_file;
|
|
double gamma;
|
|
|
|
|
|
in_file=fopen("arrow.png","r");
|
|
out_file=fopen("arrow.inc","w");
|
|
if (!(in_file&&out_file)){
|
|
perror("arrow");
|
|
exit(1);
|
|
}
|
|
png_ptr_read=png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL,
|
|
NULL);
|
|
info_ptr_read=png_create_info_struct(png_ptr_read);
|
|
png_init_io(png_ptr_read, in_file);
|
|
png_read_info(png_ptr_read, info_ptr_read);
|
|
x=png_get_image_width(png_ptr_read,info_ptr_read);
|
|
y=png_get_image_height(png_ptr_read,info_ptr_read);
|
|
if (png_get_gAMA(png_ptr_read,info_ptr_read, &gamma))
|
|
{
|
|
png_set_gamma(png_ptr_read, 1, gamma);
|
|
}
|
|
else
|
|
{
|
|
png_set_gamma(png_ptr_read, 1, 1.0);
|
|
}
|
|
png_read_update_info(png_ptr_read, info_ptr_read);
|
|
image=malloc(3*x);
|
|
if (!image){
|
|
fprintf(stderr,"Not enough memory\n");
|
|
exit(1);
|
|
}
|
|
|
|
fprintf(out_file,"/* Automatically generated by the program \"arrow\" (arrow.c) */\n\n");
|
|
fprintf(out_file,"enum {arrow_width=32, arrow_height=%d, arrow_area=%d};\n",y,y*32);
|
|
fprintf(out_file,"\nstatic_const unsigned int arrow[%d]={\n",y+y);
|
|
for (;y;y--){
|
|
png_read_row(png_ptr_read,image,NULL);
|
|
print_row_hex(out_file,image,x);
|
|
}
|
|
fprintf(out_file,"};\n");
|
|
|
|
free(image);
|
|
png_read_end(png_ptr_read, NULL);
|
|
png_destroy_read_struct(&png_ptr_read, &info_ptr_read, NULL);
|
|
fclose(in_file);
|
|
|
|
return 0;
|
|
}
|
|
|