perf: added simple collection strategy

modules/ocl/perf/main.cpp

@@ -67,5 +67,7 @@ static const char * impls[] =
 
 int main(int argc, char ** argv)
 {
+    ::perf::TestBase::setPerformanceStrategy(::perf::PERF_STRATEGY_SIMPLE);
+
     CV_PERF_TEST_MAIN_INTERNALS(ocl, impls, dumpOpenCLDevice())
 }

modules/ts/include/opencv2/ts/ts_perf.hpp

@@ -247,9 +247,20 @@ typedef struct CV_EXPORTS performance_metrics
     };
 
     performance_metrics();
+    void clear();
 } performance_metrics;
 
 
+/*****************************************************************************************\
+*                           Strategy for performance measuring                            *
+\*****************************************************************************************/
+enum PERF_STRATEGY
+{
+    PERF_STRATEGY_BASE = 0,
+    PERF_STRATEGY_SIMPLE = 1,
+};
+
+
 /*****************************************************************************************\
 *                           Base fixture for performance tests                            *
 \*****************************************************************************************/
@@ -265,6 +276,9 @@ public:
     static std::string getDataPath(const std::string& relativePath);
     static std::string getSelectedImpl();
 
+    static enum PERF_STRATEGY getPerformanceStrategy();
+    static enum PERF_STRATEGY setPerformanceStrategy(enum PERF_STRATEGY strategy);
+
 protected:
     virtual void PerfTestBody() = 0;