shithub: libvpx

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Rd check on segment level reference mode.

Do not allow the rd code to check compound modes if
a segment level reference frame is selected.

Change-Id: I95f0c57789e0eaceed7caf227e94b4ba3130a06c

--- a/vp9/encoder/vp9_rdopt.c

+++ b/vp9/encoder/vp9_rdopt.c

@@ -2580,6 +2580,12 @@

         cpi->rd_threshes[bsize][mode_index] == INT_MAX)

       continue;

+    // Do not allow compound prediction if the segment level reference

+    // frame feature is in use as in this case there can only be one reference.

+    if ((vp9_mode_order[mode_index].second_ref_frame > INTRA_FRAME) &&

+         vp9_segfeature_active(xd, segment_id, SEG_LVL_REF_FRAME))

+      continue;

+

     x->skip = 0;

     this_mode = vp9_mode_order[mode_index].mode;

     ref_frame = vp9_mode_order[mode_index].ref_frame;