Merge pull request #7550 from apavlenko:ivx

C++ wrappers over OpenVX 1.x API (#7550)

* initial commit

* fixing missing swap(refcount) bug

* removing dead code

* fixinf identation

* splitting c++98 and external refcount definitions

* fixing formatToMatType

* using vector instead of initializer_list for consistency with c++98 API

* IVX_HIDE_INFO_WARNINGS

* just in case a compiler doesn't do this

* removing copy functionality from ImagePatch, Image can be used for that

* stricter type checks

3rdparty/openvx/include/ivx_lib_debug.hpp

+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+// Copyright (C) 2016, Intel Corporation, all rights reserved.
+// Third party copyrights are property of their respective owners.
+
+/*
+C++ wrappers over OpenVX 1.x C API ("openvx-debug" module)
+Details: TBD
+*/
+
+#pragma once
+#ifndef IVX_LIB_DEBUG_HPP
+#define IVX_LIB_DEBUG_HPP
+
+#include "ivx.hpp"
+
+namespace ivx
+{
+namespace debug
+{
+/*
+* "openvx-debug" module
+*/
+
+//
+void fReadImage(vx_context c, const std::string& path, vx_image img)
+{
+    IVX_CHECK_STATUS( vxuFReadImage(c, (vx_char*)path.c_str(), img) );
+}
+
+//
+void fWriteImage(vx_context c, vx_image img, const std::string& path)
+{
+    IVX_CHECK_STATUS( vxuFWriteImage(c, img, (vx_char*)path.c_str()) );
+}
+
+} // namespace debug
+} // namespace ivx
+
+#endif //IVX_LIB_DEBUG_HPP