ocl: bailout from unsupported types

modules/core/include/opencv2/core/opencl/ocl_defs.hpp

@@ -59,11 +59,18 @@ static inline bool isOpenCLActivated() { return false; }
     }
 #else
 #define CV_OCL_RUN_(condition, func, ...)                                   \
+try \
+{ \
     if (cv::ocl::isOpenCLActivated() && (condition) && func)                \
     {                                                                       \
         CV_IMPL_ADD(CV_IMPL_OCL);                                           \
         return __VA_ARGS__;                                                 \
-    }
+    } \
+} \
+catch (const cv::Exception& e) \
+{ \
+    CV_UNUSED(e); /* TODO: Add some logging here */ \
+}
 #endif
 
 #else

modules/core/src/ocl.cpp

@@ -6005,6 +6005,7 @@ const char* typeToStr(int type)
         "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?"
     };
     int cn = CV_MAT_CN(type), depth = CV_MAT_DEPTH(type);
+    CV_Assert(depth != CV_16F);  // Workaround for: https://github.com/opencv/opencv/issues/12824
     return cn > 16 ? "?" : tab[depth*16 + cn-1];
 }
 
@@ -6022,6 +6023,7 @@ const char* memopTypeToStr(int type)
         "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?"
     };
     int cn = CV_MAT_CN(type), depth = CV_MAT_DEPTH(type);
+    CV_Assert(depth != CV_16F);  // Workaround for: https://github.com/opencv/opencv/issues/12824
     return cn > 16 ? "?" : tab[depth*16 + cn-1];
 }
 
@@ -6039,6 +6041,7 @@ const char* vecopTypeToStr(int type)
         "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?", "?"
     };
     int cn = CV_MAT_CN(type), depth = CV_MAT_DEPTH(type);
+    CV_Assert(depth != CV_16F);  // Workaround for: https://github.com/opencv/opencv/issues/12824
     return cn > 16 ? "?" : tab[depth*16 + cn-1];
 }