Allow the butler to say "try again later" when get_video() is called

while it's suspended.  Then make the GUI follow that suggestion.
Should

1 files changed, 7 insertions, 1 deletions

diff --git a/src/lib/butler.h b/src/lib/butler.h
index 4322c401d..fb133d108 100644
--- a/src/lib/butler.h
+++ b/src/lib/butler.h
@@ -41,7 +41,13 @@ public:
 	~Butler ();
 
 	void seek (DCPTime position, bool accurate);
-	std::pair<boost::shared_ptr<PlayerVideo>, DCPTime> get_video ();
+
+	enum Error {
+		NONE,
+		AGAIN
+	};
+
+	std::pair<boost::shared_ptr<PlayerVideo>, DCPTime> get_video (Error* e = 0);
 	boost::optional<DCPTime> get_audio (float* out, Frame frames);
 	boost::optional<TextRingBuffers::Data> get_closed_caption ();