[x265] [PATCH] fix assert crash

[Min Chen]

# HG changeset patch
# User Min Chen <chenm003 at 163.com>
# Date 1382616670 -28800
# Node ID 31485d1c19051ac633bda3298f8b9c2dc762d928
# Parent  8430c3486b416687a25e37c60090a2358ceec47e
fix assert crash

diff -r 8430c3486b41 -r 31485d1c1905 source/Lib/TLibCommon/TComTrQuant.cpp
--- a/source/Lib/TLibCommon/TComTrQuant.cpp	Thu Oct 24 19:55:58 2013 +0800
+++ b/source/Lib/TLibCommon/TComTrQuant.cpp	Thu Oct 24 20:11:10 2013 +0800
@@ -1032,8 +1032,11 @@
     const int size = (1 << log2BlockSize);
     const UInt* sigPos = &sigCoeffGroupFlag[(posYCG << log2BlockSize) + posXCG];
 
-    assert(sigPos[1] <= 1);
-    assert(sigPos[size] <= 1);
+    if (posXCG < size - 1)
+        assert(sigPos[1] <= 1);
+
+    if (posYCG < size - 1)
+        assert(sigPos[size] <= 1);
 
     UInt sigRight = (sigPos[1]);
     UInt sigLower = (sigPos[size]);
@@ -1358,8 +1361,11 @@
     const int size = (1 << log2BlockSize);
     const UInt* sigPos = &sigCoeffGroupFlag[(cgPosY << log2BlockSize) + cgPosX];
 
-    assert(sigPos[1] <= 1);
-    assert(sigPos[size] <= 1);
+    if (cgPosX < size - 1)
+        assert(sigPos[1] <= 1);
+
+    if (cgPosY < size - 1)
+        assert(sigPos[size] <= 1);
 
     UInt sigRight = (cgPosX == size - 1) ? 0 : (sigPos[1]);
     UInt sigLower = (cgPosY == size - 1) ? 0 : (sigPos[size]);