Consider assets outside the DCP as referenced assets (i.e.1.0-vf

not to be written to the asset map).  Return a value from
finalize() to say whether a writer has written anything.
Other small related tweaks.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/asset_writer.h b/src/asset_writer.h
index 66d7396f..f9022899 100644
--- a/src/asset_writer.h
+++ b/src/asset_writer.h
@@ -44,7 +44,7 @@ class AssetWriter : public boost::noncopyable
 {
 public:
 	virtual ~AssetWriter ();
-	virtual void finalize ();
+	virtual bool finalize ();
 
 protected:
 	AssetWriter (MXF* mxf, boost::filesystem::path file);