commit 4ff78833485e345060b52e73fbcdec86a225c3af
author Hui Su <huisu@google.com> Mon Mar 05 10:29:34 2018 -0800
committer Hui Su <huisu@google.com> Mon Mar 05 20:47:33 2018 +0000
tree 682abe54808184b2fbf435c2769f3ee72c688f2c
parent 114c9a298e3fce899777c6c6d35b1c856469dc03

Handle cases with no tile data to decode

BUG=aomedia:1498

Change-Id: I3fe85f67247f2dea0c2413873a1ca13a95f0961e

av1/decoder/decodeframe.c

diff --git a/av1/decoder/decodeframe.c b/av1/decoder/decodeframe.c
index 4cf6e8e..120bc69 100644
--- a/av1/decoder/decodeframe.c
+++ b/av1/decoder/decodeframe.c
@@ -1939,6 +1939,10 @@
     allow_update_cdf = 1;
   }
 
+  // No tiles to decode.
+  if (tile_rows_end <= tile_rows_start || tile_cols_end <= tile_cols_start)
+    return data;
+
 #if CONFIG_CDF_UPDATE_MODE
   allow_update_cdf = allow_update_cdf && !cm->disable_cdf_update;
 #endif  // CONFIG_CDF_UPDATE_MODE