mii_emu/utils/icon-convert-tcc.c

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/*
first convert the .png to binary files in contrib using imagemagik:
$ convert your_image.png -depth 8 rgba:your_image.bin
run this with
$ tcc -run icon-convert-tcc.c
*/
#include <glob.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <unistd.h>
#include <libgen.h>
/* this loads each contrib/mii-icon-*.bin file which is raw RGBA and
add the header width/height, and convert the pixels to ARGB */
int main() {
glob_t g = {};
glob("contrib/mii-icon-*.bin", 0, NULL, &g);
for (int i = 0; i < g.gl_pathc; i++) {
char * path = strdup(g.gl_pathv[i]);
char * name = basename(path);
char * dot = strrchr(name, '.');
if (dot)
*dot = 0;
char * dup = strdup(name);
char * size = strrchr(dup, '-');
if (size)
size++;
int w = 0, h = 0;
if (size)
w = h = atoi(size);
char *orig = g.gl_pathv[i];
if (!w || !h) {
printf("bad size %s\n", orig);
continue;
}
FILE * f = fopen(orig, "rb");
if (!f) {
perror(orig);
printf("bad file %s\n", orig);
continue;
}
fseek(f, 0, SEEK_END);
int size_ = ftell(f);
fseek(f, 0, SEEK_SET);
unsigned char * pixels = malloc(size_);
fread(pixels, 1, size_, f);
fclose(f);
char out[1024];
snprintf(out, sizeof(out), "contrib/%s.h", name);
f = fopen(out, "wb");
if (!f) {
printf("bad file %s\n", out);
continue;
}
fprintf(f, "/* this file is auto-generated by icon-convert-tcc.c */\n");
// fprintf(f, "#include <stdint.h>\n");
fprintf(f, "static const unsigned long mii_icon%d[] = {\n", w);
fprintf(f, "\t%d,%d,\n", w, h);
for (int y = 0; y < h; y++) {
fprintf(f, "\t");
for (int x = 0; x < w; x++) {
int i = (y * w + x) * 4;
int r = pixels[i + 0];
int g = pixels[i + 1];
int b = pixels[i + 2];
int a = pixels[i + 3];
fprintf(f, "0x%02x%02x%02x%02x, ", a, r, g, b);
if (x % 8 == 7)
fprintf(f, "\n\t");
}
fprintf(f, "\n");
}
fprintf(f, "};\n");
fclose(f);
free(pixels);
}
}