Add duration() methods to CPL and Reel.

1 files changed, 19 insertions, 0 deletions

diff --git a/src/reel.cc b/src/reel.cc
index ddab12d3..3ab9993f 100644
--- a/src/reel.cc
+++ b/src/reel.cc
@@ -36,6 +36,7 @@
 using std::string;
 using std::list;
 using std::cout;
+using std::max;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
 using namespace dcp;
@@ -185,3 +186,21 @@ Reel::resolve_refs (list<shared_ptr<Asset> > assets)
 		}
 	}
 }
+
+int64_t
+Reel::duration () const
+{
+	int64_t d = 0;
+
+	if (_main_picture) {
+		d = max (d, _main_picture->duration ());
+	}
+	if (_main_sound) {
+		d = max (d, _main_sound->duration ());
+	}
+	if (_main_subtitle) {
+		d = max (d, _main_subtitle->duration ());
+	}
+
+	return d;
+}