Duplicate destination result line is better...

Signed-off-by: jpsdr <jpsdr.psx@free.fr>
jpsdr · Jul 17, 2020 · fc18e76 · fc18e76
1 parent 4771fbc
commit fc18e76
Showing 1 changed file with 7 additions and 9 deletions.
diff --git a/nnedi3/nnedi3.cpp b/nnedi3/nnedi3.cpp
@@ -1204,15 +1204,13 @@ PVideoFrame __stdcall nnedi3::GetFrame(int n, IScriptEnvironment *env)
 
 	if (vi.Is420() && ((vi.height & 3)!=0))
 	{
-		ptrdiff_t src_offsetU=(src->GetHeight(PLANAR_U)-1)*src->GetPitch(PLANAR_U);
-		ptrdiff_t src_offsetV=(src->GetHeight(PLANAR_V)-1)*src->GetPitch(PLANAR_V);
-		ptrdiff_t dst_offsetU=(dst->GetHeight(PLANAR_U)-1)*dst->GetPitch(PLANAR_U);
-		ptrdiff_t dst_offsetV=(dst->GetHeight(PLANAR_V)-1)*dst->GetPitch(PLANAR_V);
-
-		memcpy(dst->GetWritePtr(PLANAR_U)+dst_offsetU,src->GetReadPtr(PLANAR_U)+src_offsetU,
-			src->GetRowSize(PLANAR_U));
-		memcpy(dst->GetWritePtr(PLANAR_V)+dst_offsetV,src->GetReadPtr(PLANAR_V)+src_offsetV,
-			src->GetRowSize(PLANAR_V));
+		ptrdiff_t dst_offsetU=(dst->GetHeight(PLANAR_U)-2)*dst->GetPitch(PLANAR_U);
+		ptrdiff_t dst_offsetV=(dst->GetHeight(PLANAR_V)-2)*dst->GetPitch(PLANAR_V);
+
+		memcpy(dst->GetWritePtr(PLANAR_U)+(dst_offsetU+dst->GetPitch(PLANAR_U)),
+			dst->GetWritePtr(PLANAR_U)+dst_offsetU,dst->GetRowSize(PLANAR_U));
+		memcpy(dst->GetWritePtr(PLANAR_V)+(dst_offsetV+dst->GetPitch(PLANAR_V)),
+			dst->GetWritePtr(PLANAR_V)+dst_offsetV,dst->GetRowSize(PLANAR_V));
 	}
 
 	return dst;