[x265] [PATCH] Tcompridiction: Block Interpolation calculation

[gopu at multicorewareinc.com]

# HG changeset patch
# User ggopu
# Date 1377761657 -19800
# Node ID 3325574049fe495c59488fe3ca83f7aeddcc917c
# Parent  77d92ca1d18332da920f399b5ccc3902a91d4198
Tcompridiction: Block Interpolation calculation

diff -r 77d92ca1d183 -r 3325574049fe source/Lib/TLibCommon/TComPrediction.cpp
--- a/source/Lib/TLibCommon/TComPrediction.cpp	Thu Aug 29 02:01:23 2013 -0500
+++ b/source/Lib/TLibCommon/TComPrediction.cpp	Thu Aug 29 13:04:17 2013 +0530
@@ -477,7 +477,34 @@
     Pel* src = ref->lumaPlane[xFrac][yFrac] + blkOffset + refOffset;
     Int srcStride = refStride;
 
-    x265::primitives.blockcpy_pp(width, height, dst, dstStride, src, srcStride);
+    if (yFrac == 0)
+    {
+        if (xFrac != 0)
+        {
+            x265::primitives.ipfilter_pp[FILTER_H_P_P_8]((pixel*)src, refStride, (pixel*)dst, dstStride, width, height, g_lumaFilter[xFrac]);
+        }
+        else
+        {
+            x265::primitives.blockcpy_pp(width, height, dst, dstStride, src, srcStride);
+        }
+    }
+    else if (xFrac == 0)
+    {
+        x265::primitives.ipfilter_pp[FILTER_H_P_P_8]((pixel*)src, refStride, (pixel*)dst, dstStride, width, height, g_lumaFilter[yFrac]);
+    }
+    else
+    {
+        Int tmpStride = width;
+        Int filterSize = NTAPS_LUMA;
+        Int halfFilterSize = (filterSize >> 1);
+
+        Short *tmp    = (Short*)malloc(width * (height + filterSize - 1) * sizeof(Short));
+
+        primitives.ipfilter_ps[FILTER_H_P_S_8]((pixel*)src - (halfFilterSize - 1) * refStride,  refStride, tmp, tmpStride, width, height + filterSize - 1, g_lumaFilter[xFrac]);
+        primitives.ipfilter_sp[FILTER_V_S_P_8](tmp + (halfFilterSize - 1) * tmpStride, tmpStride, (pixel*)dst, dstStride, width, height, g_lumaFilter[yFrac]);
+
+        free(tmp);
+    }
 }
 
 //Motion compensated block for biprediction