Added initial implementation and test for the GPU version of add, based on NPP. Need to implement for other depths. Also waiting NPP at CMake.

modules/gpu/src/arithm.cpp

@@ -0,0 +1,78 @@
+/*M///////////////////////////////////////////////////////////////////////////////////////
+//
+//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
+//
+//  By downloading, copying, installing or using the software you agree to this license.
+//  If you do not agree to this license, do not download, install,
+//  copy or use the software.
+//
+//
+//                           License Agreement
+//                For Open Source Computer Vision Library
+//
+// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
+// Copyright (C) 2009, Willow Garage Inc., all rights reserved.
+// Third party copyrights are property of their respective owners.
+//
+// Redistribution and use in source and binary forms, with or without modification,
+// are permitted provided that the following conditions are met:
+//
+//   * Redistribution's of source code must retain the above copyright notice,
+//     this list of conditions and the following disclaimer.
+//
+//   * Redistribution's in binary form must reproduce the above copyright notice,
+//     this list of conditions and the following disclaimer in the documentation
+//     and/or other GpuMaterials provided with the distribution.
+//
+//   * The name of the copyright holders may not be used to endorse or promote products
+//     derived from this software without specific prior written permission.
+//
+// This software is provided by the copyright holders and contributors "as is" and
+// any express or bpied warranties, including, but not limited to, the bpied
+// warranties of merchantability and fitness for a particular purpose are disclaimed.
+// In no event shall the Intel Corporation or contributors be liable for any direct,
+// indirect, incidental, special, exemplary, or consequential damages
+// (including, but not limited to, procurement of substitute goods or services;
+// loss of use, data, or profits; or business interruption) however caused
+// and on any theory of liability, whether in contract, strict liability,
+// or tort (including negligence or otherwise) arising in any way out of
+// the use of this software, even if advised of the possibility of such damage.
+//
+//M*/
+
+#include "precomp.hpp"
+#include "npp.h" //TODO: move to the precomp.hpp
+
+using namespace cv;
+using namespace cv::gpu;
+using namespace std;
+
+#if !defined (HAVE_CUDA)
+
+void cv::gpu::add(const GpuMat& src1, const GpuMat& src2, GpuMat& dst) { throw_nogpu(); }
+
+#else /* !defined (HAVE_CUDA) */
+
+void cv::gpu::add(const GpuMat& src1, const GpuMat& src2, GpuMat& dst)
+{
+    CV_Assert(src1.size() == src2.size() && src1.type() == src2.type());
+
+    dst.create( src1.size(), src1.type() );
+    
+    CV_DbgAssert(src1.depth() == CV_8U || src1.depth() == CV_32F);
+    CV_DbgAssert(src1.channels() == 1 || src1.channels() == 4);
+
+    NppiSize sz;
+    sz.width = src1.cols;
+    sz.height = src1.rows;
+
+    if (src1.depth() == CV_8U)
+    {
+        nppiAdd_8u_C1RSfs((const Npp8u*)src1.ptr<char>(), src1.step, 
+                          (const Npp8u*)src2.ptr<char>(), src2.step, 
+                          (Npp8u*)dst.ptr<char>(), dst.step, sz, 0);
+    }
+    //TODO: implement other depths
+}
+
+#endif /* !defined (HAVE_CUDA) */