TAPI: stiching: add custom OpenCL kernels for MultiBandBlender

modules/core/include/opencv2/core/ocl.hpp

@@ -598,6 +598,8 @@ CV_EXPORTS int predictOptimalVectorWidth(InputArray src1, InputArray src2 = noAr
                                          InputArray src4 = noArray(), InputArray src5 = noArray(), InputArray src6 = noArray(),
                                          InputArray src7 = noArray(), InputArray src8 = noArray(), InputArray src9 = noArray());
 
+CV_EXPORTS void buildOptionsAddMatrixDescription(String& buildOptions, const String& name, InputArray _m);
+
 class CV_EXPORTS Image2D
 {
 public:

modules/core/include/opencv2/core/utility.hpp

@@ -495,6 +495,11 @@ template<> inline std::string CommandLineParser::get<std::string>(const String&
 }
 #endif // OPENCV_NOSTL
 
+#if !defined(OPENCV_SKIP_SUPPRESS_WARNING) || !OPENCV_SKIP_SUPPRESS_WARNING
+// Use this to bypass "warning C4127: conditional expression is constant"
+template <typename T> T SuppressWarning(T v) { return v; }
+#endif
+
 } //namespace cv
 
 #endif //__OPENCV_CORE_UTILITY_H__

modules/core/src/ocl.cpp

@@ -4404,7 +4404,24 @@ int predictOptimalVectorWidth(InputArray src1, InputArray src2, InputArray src3,
 
 #undef PROCESS_SRC
 
-/////////////////////////////////////////// Image2D ////////////////////////////////////////////////////
+
+// TODO Make this as a method of OpenCL "BuildOptions" class
+void buildOptionsAddMatrixDescription(String& buildOptions, const String& name, InputArray _m)
+{
+    if (!buildOptions.empty())
+        buildOptions += " ";
+    int type = _m.type(), depth = CV_MAT_DEPTH(type);
+    buildOptions += format(
+            "-D %s_T=%s -D %s_T1=%s -D %s_CN=%d -D %s_TSIZE=%d -D %s_T1SIZE=%d -D %s_DEPTH=%d",
+            name.c_str(), ocl::typeToStr(type),
+            name.c_str(), ocl::typeToStr(CV_MAKE_TYPE(depth, 1)),
+            name.c_str(), (int)CV_MAT_CN(type),
+            name.c_str(), (int)CV_ELEM_SIZE(type),
+            name.c_str(), (int)CV_ELEM_SIZE1(type),
+            name.c_str(), (int)depth
+            );
+}
+
 
 struct Image2D::Impl
 {