commit 339cf93be9b08495fb53b8330ecd0e1ac62d0285
author Jingning Han <jingning@google.com> Mon Sep 18 10:17:02 2017 -0700
committer Jingning Han <jingning@google.com> Wed Sep 20 23:17:35 2017 +0000
tree 1537426b61a53b52e7eb0163961cd33955565510
parent 83c27ecda47895fe4c9aa24156c0605502ff17bf

Fix av1_get_txb_entropy_context check condition

Return 0 when eob is 0. It is possible that when eob is 0, the
fed in quantization matrix is uninitialized in the rate distortion
optimization process.

Change-Id: I2dcf558203bf60ba7332c6bf585a978f7c7309b5

av1/encoder/encodetxb.c

diff --git a/av1/encoder/encodetxb.c b/av1/encoder/encodetxb.c
index 21c4cd6..1300578 100644
--- a/av1/encoder/encodetxb.c
+++ b/av1/encoder/encodetxb.c
@@ -1599,6 +1599,8 @@
   const int16_t *scan = scan_order->scan;
   int cul_level = 0;
   int c;
+
+  if (eob == 0) return 0;
   for (c = 0; c < eob; ++c) {
     cul_level += abs(qcoeff[scan[c]]);
   }