[x265] [PATCH] dst4_c: optimization

[praveen at multicorewareinc.com]

# HG changeset patch
# User Praveen Tiwari
# Date 1416541353 -19800
# Node ID 8a510f40c40733394aae0b9413bf8a279ee248e6
# Parent  2abf89f5c4f2b797705f3b6e8d6670962daa38b9
dst4_c: optimization

diff -r 2abf89f5c4f2 -r 8a510f40c407 source/common/dct.cpp
--- a/source/common/dct.cpp	Thu Nov 20 14:31:04 2014 -0800
+++ b/source/common/dct.cpp	Fri Nov 21 09:12:33 2014 +0530
@@ -454,18 +454,7 @@
     }
 
     fastForwardDst(block, coef, shift_1st);
-    fastForwardDst(coef, block, shift_2nd);
-
-#define N (4)
-    for (int i = 0; i < N; i++)
-    {
-        for (int j = 0; j < N; j++)
-        {
-            dst[i * N + j] = block[i * N + j];
-        }
-    }
-
-#undef N
+    fastForwardDst(coef, dst, shift_2nd);
 }
 
 void dct4_c(const int16_t *src, int16_t *dst, intptr_t stride)