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#include <incbin.h>
#include <stdio.h>
#include <unistd.h>
INCBIN(APPLE, "data/apple.bin");
#define APPLE_WIDTH 256
#define APPLE_HEIGHT 144
#define APPLE_FPS 12
#define APPLE_FRAMES 2630
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
// returned from drm
static uint32_t *fb;
static int width, height, bpp, scale;
// meta
static size_t frame = 0;
static size_t frame_size;
static size_t ticks_off;
#define PIXEL(x, y) \
gAPPLEData[offset + \
(((x + APPLE_WIDTH % APPLE_WIDTH) / scale) + \
((y + APPLE_HEIGHT % APPLE_HEIGHT) / scale) * APPLE_WIDTH)]
static void draw_frame(void)
{
size_t offset = frame_size * frame;
for (int y = 0; y < APPLE_HEIGHT * scale; y++) {
for (int x = 0; x < APPLE_WIDTH * scale; x++) {
uint8_t colors[9];
colors[0] = PIXEL(x, y);
colors[1] = PIXEL(x - 1, y);
colors[2] = PIXEL(x + 1, y);
colors[3] = PIXEL(x, y - 1);
colors[4] = PIXEL(x - 1, y - 1);
colors[5] = PIXEL(x + 1, y - 1);
colors[6] = PIXEL(x, y + 1);
colors[7] = PIXEL(x - 1, y + 1);
colors[8] = PIXEL(x + 1, y + 1);
// anti aliasing
uint8_t color = (colors[0] + colors[0] + colors[0] + colors[0] +
colors[1] + colors[2] + colors[3] + colors[4] +
colors[5] + colors[6] + colors[7] + colors[8]) /
12;
fb[x + y * width] = (color << 16) | (color << 8) | (color << 0);
}
}
frame = ((ticks() - ticks_off) / (1000 / APPLE_FPS));
if (frame >= APPLE_FRAMES)
exit(0);
}
int main(void)
{
printf("all your apple belong to bad\n");
if (drm((void **)&fb, &width, &height, &bpp)) {
fprintf(stderr, "failure!\n");
return 1;
}
ticks_off = ticks();
frame_size = APPLE_WIDTH * APPLE_HEIGHT;
scale = MIN(width / APPLE_WIDTH, height / APPLE_HEIGHT);
while (1)
draw_frame();
return 0;
}
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