--- /dev/null
+#ifndef _DECKLINK_UTIL
+#define _DECKLINK_UTIL 1
+
+#include <stdint.h>
+
+#include <map>
+
+#include "bmusb/bmusb.h"
+
+class IDeckLinkDisplayModeIterator;
+
+std::map<uint32_t, bmusb::VideoMode> summarize_video_modes(IDeckLinkDisplayModeIterator *mode_it, unsigned card_index);
+
+// Picks a video connection that the card supports. Priority list: HDMI, SDI, anything else.
+BMDVideoConnection pick_default_video_connection(IDeckLink *card, BMDDeckLinkAttributeID attribute_id, unsigned card_index);
+
+#endif // !defined(_DECKLINK_UTIL)