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-rw-r--r--src/lib/film.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/lib/film.h b/src/lib/film.h
index 3cd370a0d..f61062be0 100644
--- a/src/lib/film.h
+++ b/src/lib/film.h
@@ -29,6 +29,7 @@
#include "types.h"
#include "isdcf_metadata.h"
#include "frame_rate_change.h"
+#include "signaller.h"
#include "ratio.h"
#include <dcp/key.h>
#include <dcp/encrypted_kdm.h>
@@ -55,7 +56,7 @@ struct isdcf_name_test;
*
* The content of a Film is held in a Playlist (created and managed by the Film).
*/
-class Film : public boost::enable_shared_from_this<Film>, public boost::noncopyable
+class Film : public boost::enable_shared_from_this<Film>, public Signaller, public boost::noncopyable
{
public:
Film (boost::filesystem::path, bool log = true);