commit 085b97aa5c17afbc07c8a342ba08a0bbc5b1b523
author Jingning Han <jingning@google.com> Sun Oct 05 12:05:14 2014 -0700
committer Jingning Han <jingning@google.com> Sun Oct 05 12:05:14 2014 -0700
tree ce83ff55cb848d836be1833953ac45c15a38d0ed
parent ccdb518ff8082bc1a3f9ec3027e051e3a8317851

Fix an IOC issue in vp9_rd_pick_inter_mode_sb

It is possible that the GOLDEN reference frame is not avaiable, in
which setting the predicted mv will be associated with a residual
value of INT_MAX. This commit checks this condition before
left shift and comparison with that of ALTREF frame, to avoid
overflow issue.

Change-Id: Ib98c3149dbdd016f2fe5beaafb13f67d469dd07c

vp9/encoder/vp9_rdopt.c

diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index fd67ab5..43300ae 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -2675,7 +2675,7 @@
   }
 
   if (cpi->sf.alt_ref_search_fp)
-    if (!cm->show_frame)
+    if (!cm->show_frame && x->pred_mv_sad[GOLDEN_FRAME] < INT_MAX)
       if (x->pred_mv_sad[ALTREF_FRAME] > (x->pred_mv_sad[GOLDEN_FRAME] << 1))
         mode_skip_mask[ALTREF_FRAME] |= INTER_ALL;