From c366d41af080b9ac37117a9b27a249722c77f74e Mon Sep 17 00:00:00 2001
From: Carl Hetherington <cth@carlh.net>
Date: Sun, 4 Nov 2012 13:41:43 +0000
Subject: Skip every other frame with 50fps sources.

---
 src/lib/util.cc | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

(limited to 'src/lib/util.cc')

diff --git a/src/lib/util.cc b/src/lib/util.cc
index b68f7e392..d89ebd0d5 100644
--- a/src/lib/util.cc
+++ b/src/lib/util.cc
@@ -374,6 +374,24 @@ md5_digest (string file)
 	return s.str ();
 }
 
+DCPFrameRate
+dcp_frame_rate (float fps)
+{
+	DCPFrameRate dfr;
+
+	dfr.run_fast = (fps != rint (fps));
+	dfr.frames_per_second = rint (fps);
+	dfr.skip = 1;
+
+	/* XXX: somewhat arbitrary */
+	if (fps == 50) {
+		dfr.frames_per_second = 25;
+		dfr.skip = 2;
+	}
+
+	return dfr;
+}
+
 /** @param An arbitrary sampling rate.
  *  @return The appropriate DCP-approved sampling rate (48kHz or 96kHz).
  */
-- 
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