Write simple farbfeld-writing module

include/ff.h

@@ -0,0 +1,8 @@
+#ifndef FF_H
+#define FF_H
+
+#include "img.h"
+
+void ff_write(int fd, img_t img);
+
+#endif

include/img.h

@@ -0,0 +1,15 @@
+#ifndef IMG_H
+#define IMG_H
+
+#include <stdint.h>
+
+typedef struct {
+	uint16_t r, g, b, a;
+} pix_t;
+
+typedef struct {
+	uint32_t w, h;
+	pix_t *pix;
+} img_t;
+
+#endif