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, 7 insertions, 5 deletions

diff --git a/src/stereo_picture_asset_writer.cc b/src/stereo_picture_asset_writer.cc
index f17e3d2f..322c7b00 100644
--- a/src/stereo_picture_asset_writer.cc
+++ b/src/stereo_picture_asset_writer.cc
@@ -110,14 +110,16 @@ StereoPictureAssetWriter::fake_write (int size)
 	}
 }
 
-void
+bool
 StereoPictureAssetWriter::finalize ()
 {
-	Kumu::Result_t r = _state->mxf_writer.Finalize();
-	if (ASDCP_FAILURE (r)) {
-		boost::throw_exception (MXFFileError ("error in finalizing video MXF", _file.string(), r));
+	if (_started) {
+		Kumu::Result_t r = _state->mxf_writer.Finalize();
+		if (ASDCP_FAILURE (r)) {
+			boost::throw_exception (MXFFileError ("error in finalizing video MXF", _file.string(), r));
+		}
 	}
 
 	_picture_asset->_intrinsic_duration = _frames_written;
-	PictureAssetWriter::finalize ();
+	return PictureAssetWriter::finalize ();
 }