Sequencer: Add session UUID management to Sequence

This is the first step for having sequences covered with session UUID
with the goal to remove code which uses original sequence pointer to
match sequences.

Currently this UUID is maintained on file load, allocation and leaf
duplication function.There are more cases to cover and ensure UUID
is re-generated or re-used when needed. It will be done as follow-up
development.

1 files changed, 3 insertions, 0 deletions

diff --git a/source/blender/blenloader/intern/readfile.c b/source/blender/blenloader/intern/readfile.c
index 9320187f2a0..3c6bf481abe 100644
--- a/source/blender/blenloader/intern/readfile.c
+++ b/source/blender/blenloader/intern/readfile.c
@@ -6461,6 +6461,9 @@ static void direct_link_scene(BlendDataReader *reader, Scene *sce)
     link_recurs_seq(reader, &ed->seqbase);
 
     SEQ_BEGIN (ed, seq) {
+      /* Do as early as possible, so that other parts of reading can rely on valid session UUID. */
+      BKE_sequence_session_uuid_generate(seq);
+
       BLO_read_data_address(reader, &seq->seq1);
       BLO_read_data_address(reader, &seq->seq2);
       BLO_read_data_address(reader, &seq->seq3);