shithub: libvpx

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Do not reuse mv in base spatial layer if curr buf same as prev.

Bug: b/154890543
Change-Id: Iad5791912f781d225e610a61bc13f3dbaef81bb9

--- a/vp9/encoder/vp9_encoder.c

+++ b/vp9/encoder/vp9_encoder.c

@@ -7861,9 +7861,12 @@

   cm->new_fb_idx = get_free_fb(cm);

   if (cm->new_fb_idx == INVALID_IDX) return -1;

-

   cm->cur_frame = &pool->frame_bufs[cm->new_fb_idx];

-

+  // If the frame buffer for current frame is the same as previous frame, MV in

+  // the base layer shouldn't be used as it'll cause data race.

+  if (cm->cur_frame == cm->prev_frame) {

+    cpi->svc.use_base_mv = 0;

+  }

   // Start with a 0 size frame.

   *size = 0;