X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fvideo_source.h;h=748cb6fe98b403cda07b939568ef8971eec7993a;hb=8dd9ea3086b4934f2719648ffa6333c0d106ff36;hp=705b0023aec3037877a60e5e7af16db1a854d97e;hpb=63ec6f067fb6de3f65a03237fabb4f687cf74d4b;p=dcpomatic.git

diff --git a/src/lib/video_source.h b/src/lib/video_source.h
index 705b0023a..748cb6fe9 100644
--- a/src/lib/video_source.h
+++ b/src/lib/video_source.h
@@ -45,7 +45,7 @@ public:
 	 *  Second parameter is true if the image is the same as the last one that was emitted.
 	 *  Third parameter is either 0 or a subtitle that should be on this frame.
 	 */
-	boost::signals2::signal<void (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>)> Video;
+	boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, boost::shared_ptr<Subtitle>)> Video;
 
 	void connect_video (boost::shared_ptr<VideoSink>);
 };
@@ -63,8 +63,9 @@ public:
 	 *  Third parameter is either 0 or a subtitle that should be on this frame.
 	 *  Fourth parameter is the source timestamp of this frame.
 	 */
-	boost::signals2::signal<void (boost::shared_ptr<Image>, bool, boost::shared_ptr<Subtitle>, double)> Video;
+	boost::signals2::signal<void (boost::shared_ptr<const Image>, bool, boost::shared_ptr<Subtitle>, double)> Video;
 
+	void connect_video (boost::shared_ptr<VideoSink>);
 	void connect_video (boost::shared_ptr<TimedVideoSink>);
 };