Add util.{c|h} to deduplicate code

1 files changed, 10 insertions, 0 deletions

diff --git a/util.h b/util.h
new file mode 100644
index 0000000..02aee25
--- /dev/null
+++ b/util.h
@@ -0,0 +1,10 @@
+/* See LICENSE file for copyright and license details. */
+#include <stdint.h>
+#include <stdio.h>
+
+extern char *argv0;
+
+#define LEN(x) (sizeof (x) / sizeof *(x))
+
+void read_ff_header(uint32_t *width, uint32_t *height);
+void write_ff_header(uint32_t width, uint32_t height);