Ticket #602: Bugifx_Ticket602.patch

source/Lib/TLibCommon/TypeDef.h

@@ -40 +40 @@
 
 //! \ingroup TLibCommon
 //! \{
+
+#define BUGFIX_TICKET602                 1  ///< bugfix for Ticlet#602
 #define  TEMPORAL_ID_RESTRICTION         1  ///< I0600: Semantics of temporal_id changed
 #define PREVREFPIC_DEFN                    1   ///< I0345: prevRefPic defined as previous reference picture that is at same or lower 
                                             ///< temporal layer.

source/Lib/TLibEncoder/WeightPredAnalysis.cpp

@@ -227 +227 @@
         Int64 iRefAC = RefWeightACDCParam[iComp].iAC;
 
         // calculating iWeight and iOffset params
+#if BUGFIX_TICKET602
+        Double dWeight = (iRefAC==0) ? (Double)1.0 : Clip3( -256.0, 255.0, ((Double)iCurrAC / (Double)iRefAC) ); // clipped by range of wrost case (Log2WeightDenom = 0)
+#else
         Double dWeight = (iRefAC==0) ? (Double)1.0 : ( (Double)(iCurrAC) / (Double)iRefAC);
+#endif
         Int iWeight = (Int)( 0.5 + dWeight * (Double)(1<<iDenom) );
         Int iOffset = (Int)( ((iCurrDC<<iDenom) - ((Int64)iWeight * iRefDC) + (Int64)iRealOffset) >> iRealDenom );