image_expand_frames: When files are not HDF5, just return null events

1 files changed, 7 insertions, 2 deletions

diff --git a/libcrystfel/src/image.c b/libcrystfel/src/image.c
index 8ad091ba..52e7d91f 100644
--- a/libcrystfel/src/image.c
+++ b/libcrystfel/src/image.c
@@ -935,8 +935,13 @@ char **image_expand_frames(const DataTemplate *dtempl,
 		return image_hdf5_expand_frames(dtempl, filename,
 		                                n_frames);
 	} else {
-		ERROR("Can only expand HDF5 files\n");
-		return NULL;
+		char **list;
+		list = malloc(sizeof(char *));
+		if ( list == NULL ) return NULL;
+		list[0] = strdup("//");
+		if ( list[0] == NULL ) return NULL;
+		*n_frames = 1;
+		return list;
 	}
 }