VSE: Update first thumbnail when moving handle

When handles are moved, job is created only for strips that need to
update first thumbnail.

ref T91618

1 files changed, 13 insertions, 1 deletions

diff --git a/source/blender/sequencer/SEQ_render.h b/source/blender/sequencer/SEQ_render.h
index bfe10d3eae9..a74eba5fc6f 100644
--- a/source/blender/sequencer/SEQ_render.h
+++ b/source/blender/sequencer/SEQ_render.h
@@ -17,6 +17,7 @@ struct ListBase;
 struct Main;
 struct Scene;
 struct Sequence;
+struct rctf;
 
 typedef enum eSeqTaskId {
   SEQ_TASK_MAIN_RENDER,
@@ -64,7 +65,6 @@ struct ImBuf *SEQ_render_give_ibuf_direct(const SeqRenderData *context,
 void SEQ_render_thumbnails(const struct SeqRenderData *context,
                            struct Sequence *seq,
                            struct Sequence *seq_orig,
-                           float start_frame,
                            float frame_step,
                            rctf *view_area,
                            const short *stop);
@@ -77,6 +77,18 @@ struct ImBuf *SEQ_get_thumbnail(const struct SeqRenderData *context,
                                 rcti *crop,
                                 bool clipped);
 /**
+ * Get frame for first thumbnail.
+ */
+float SEQ_render_thumbnail_first_frame_get(struct Sequence *seq,
+                                           float frame_step,
+                                           struct rctf *view_area);
+/**
+ * Get frame for first thumbnail.
+ */
+float SEQ_render_thumbnail_next_frame_get(struct Sequence *seq,
+                                          float last_frame,
+                                          float frame_step);
+/**
  * Get frame step for equally spaced thumbnails. These thumbnails should always be present in
  * memory, so they can be used when zooming.
  */