37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#define SIZE 120
|
|
#include <stdint.h>
|
|
#include <stddef.h>
|
|
#include <stdio.h>
|
|
#include "glib.h"
|
|
#include "base_image.c"
|
|
|
|
int color_u8_to_u6(int v) {
|
|
const double conversion_ratio = 63.0 / 255.0;
|
|
return (int)(v * conversion_ratio);
|
|
}
|
|
|
|
int color_u8_to_u5(int v) {
|
|
const double conversion_ratio = 31.0 / 255.0;
|
|
return (int)(v * conversion_ratio);
|
|
}
|
|
|
|
void main() {
|
|
printf("static const unsigned short gimp_image[%d] = \"", gimp_image.width * gimp_image.height);
|
|
for (int x = 0; x < gimp_image.width; x++) {
|
|
for (int y = 0; y < gimp_image.height; y++) {
|
|
int idx = 3 * (y * gimp_image.width + x);
|
|
// for some reason
|
|
// red = 5 bytes
|
|
// green = 6 bytes
|
|
// blue = 5 bytes
|
|
int r = (int)gimp_image.pixel_data[idx] & 0xFF;
|
|
int g = (int)gimp_image.pixel_data[idx + 1] & 0xFF;
|
|
int b = (int)gimp_image.pixel_data[idx + 2] & 0xFF;
|
|
uint16_t color = (color_u8_to_u5(r) << 11) | (color_u8_to_u6(g) << 5) | color_u8_to_u5(b);
|
|
printf("\\0x%X", color);
|
|
}
|
|
}
|
|
printf("\"\n");
|
|
}
|
|
|