X-Git-Url: https://git.cinelerra-gg.org/git/?p=goodguy%2Fcinelerra.git;a=blobdiff_plain;f=cinelerra-5.1%2Fcinelerra%2Fcanvas.h;h=c3cb283140e39d9a61d02167423abbc776f77112;hp=dd3b574d05952f4b9c638ddaace21b0abecc9bb0;hb=b5bfe3e40a7255ae60a21d885587ada6e145e3d5;hpb=1671ba56125f316b8557edea8771e6732981c047

diff --git a/cinelerra-5.1/cinelerra/canvas.h b/cinelerra-5.1/cinelerra/canvas.h
index dd3b574d..c3cb2831 100644
--- a/cinelerra-5.1/cinelerra/canvas.h
+++ b/cinelerra-5.1/cinelerra/canvas.h
@@ -126,6 +126,10 @@ public:
 // Redraws the refresh_frame
 	virtual void draw_refresh(int flush = 1) {};
 	virtual void clear(int flash=1);
+// draw scope
+	virtual int scope_on() { return 0; }
+	virtual void draw_scope(VFrame *frame) {}
+	void process_scope(VideoDevice *video, VFrame *frame);
 
 // Get top left offset of canvas relative to output.
 // Normally negative.  Can be positive if output is smaller than canvas.