1 files changed, 95 insertions, 0 deletions
diff --git a/src/img.c b/src/img.c
new file mode 100644
index 0000000..09f000b
--- /dev/null
+++ b/src/img.c
@@ -0,0 +1,95 @@
+#define QOI_IMPLEMENTATION
+#include "../lib/qoi/qoi.h"
+
+#include <stdio.h>
+
+typedef struct {
+	unsigned char r, g, b, a;
+} Color;
+
+int pixels(char *index, char *filename) {
+	qoi_desc desc;
+	Color *pixels = qoi_read(filename, &desc, 4);
+
+	Color colors[16];
+	int colorsLen = 0;
+	char *compressed = malloc(desc.width * desc.height);
+
+	for (int i = 0; i < (int) (desc.width * desc.height); i++) {
+		char c = -1;
+		for (int j = 0; j < colorsLen; j++) {
+			if (*((int *) &colors[j]) == *((int *) pixels + i)) {
+				c = j;
+				break;
+			}
+		}
+		if (c == -1) {
+			c = colorsLen;
+			if (colorsLen >= 16) {
+				return 1;
+			}
+			colors[colorsLen++] = pixels[i];
+		}
+		compressed[i] = c;
+	}
+
+	printf("const char imagePixels%s[%d * %d] = {\n", index, desc.width, desc.height);
+	for (int y = 0; y < (int) desc.height; y++) {
+		for (int x = 0; x < (int) desc.width; x++) {
+			printf("%d,", compressed[x + y * desc.width]);
+		}
+		printf("\n");
+	}
+	printf("};\n");
+
+	return 0;
+}
+
+int image(char *index, char *filename) {
+	qoi_desc desc;
+	Color *pixels = qoi_read(filename, &desc, 4);
+
+	Color colors[16];
+	int colorsLen = 0;
+	char *compressed = malloc(desc.width * desc.height);
+
+	for (int i = 0; i < (int) (desc.width * desc.height); i++) {
+		char c = -1;
+		for (int j = 0; j < colorsLen; j++) {
+			if (*((int *) &colors[j]) == *((int *) pixels + i)) {
+				c = j;
+				break;
+			}
+		}
+		if (c == -1) {
+			c = colorsLen;
+			if (colorsLen >= 16) {
+				return 1;
+			}
+			colors[colorsLen++] = pixels[i];
+		}
+		compressed[i] = c;
+	}
+
+	printf("{\n.width = %d,\n.height = %d,\n.colors = {\n", desc.width, desc.height);
+	for (int i = 0; i < colorsLen; i++) {
+		printf("\t{%u, %u, %u, %u},\n", colors[i].r, colors[i].g, colors[i].b, colors[i].a);
+	}
+	printf("},\n.pixels = imagePixels%s,\n},\n", index);
+
+	return 0;
+}
+
+int main(int argc, char **argv) {
+	if (argc != 4) {
+		return 1;
+	}
+
+	if (!strcmp(argv[1], "pixels")) {
+		return pixels(argv[3], argv[2]);
+	} else if (!strcmp(argv[1], "image")) {
+		return image(argv[3], argv[2]);
+	} else {
+		return 1;
+	}
+}