Fix sequencer crash when pasteing strips after creating new file

Issue happened for scene. movie clip and mask strips, which contains
pointers to datablocks which are freeing on loading new file.

Also, scene strip would crash when pasted from clipboard after scene
was unlinked from file.

1 files changed, 27 insertions, 0 deletions

diff --git a/source/blender/blenkernel/intern/sequencer.c b/source/blender/blenkernel/intern/sequencer.c
index b0a65d23d93..613c02c173b 100644
--- a/source/blender/blenkernel/intern/sequencer.c
+++ b/source/blender/blenkernel/intern/sequencer.c
@@ -815,6 +815,33 @@ void BKE_sequencer_clear_scene_in_allseqs(Main *bmain, Scene *scene)
 			BKE_sequencer_base_recursive_apply(&scene_iter->ed->seqbase, clear_scene_in_allseqs_cb, scene);
 		}
 	}
+
+	/* also clear clipboard */
+	BKE_sequencer_base_recursive_apply(&seqbase_clipboard, clear_scene_in_allseqs_cb, scene);
+}
+
+static int clear_movieclip_in_clipboard_cb(Sequence *seq, void *arg_pt)
+{
+	if (seq->clip == (MovieClip *)arg_pt)
+		seq->clip = NULL;
+	return 1;
+}
+
+void BKE_sequencer_clear_movieclip_in_clipboard(MovieClip *clip)
+{
+	BKE_sequencer_base_recursive_apply(&seqbase_clipboard, clear_movieclip_in_clipboard_cb, clip);
+}
+
+static int clear_mask_in_clipboard_cb(Sequence *seq, void *arg_pt)
+{
+	if (seq->mask == (Mask *)arg_pt)
+		seq->mask = NULL;
+	return 1;
+}
+
+void BKE_sequencer_clear_mask_in_clipboard(Mask *mask)
+{
+	BKE_sequencer_base_recursive_apply(&seqbase_clipboard, clear_mask_in_clipboard_cb, mask);
 }
 
 typedef struct SeqUniqueInfo {