Use software decoder by default

modules/ANSODEngine/ANSODEngine.cpp

@@ -3,6 +3,7 @@
 #include <cmath>
 #include <json.hpp>
 #include "ANSODEngine.h"
+#include "ANSLicense.h"   // ANS_DBG macro
 #include "ANSYOLOOD.h"
 #include "ANSTENSORRTOD.h"
 #include "ANSTENSORRTCL.h"
@@ -879,6 +880,9 @@ namespace ANSCENTER
 		std::vector<Object> allResults;
 		allResults.clear();
 		try {
+			ANS_DBG("ODEngine", "SAHI START: %dx%d tile=%dx%d overlap=%.1f cam=%s",
+					input.cols, input.rows, tiledWidth, tiledHeight, overLap, camera_id.c_str());
+			auto _sahiStart = std::chrono::steady_clock::now();
 			cv::Mat image = input.clone();
 			if (image.empty() || !image.data || !image.u) {
 				return allResults;
@@ -920,6 +924,16 @@ namespace ANSCENTER
 			//4. Apply Non-Maximum Suppression (NMS) to merge overlapping results
 			float iouThreshold = 0.1;
 			std::vector<Object> finalResults = ANSUtilityHelper::ApplyNMS(allResults, iouThreshold);
+			{
+				double _sahiMs = std::chrono::duration<double, std::milli>(
+					std::chrono::steady_clock::now() - _sahiStart).count();
+				ANS_DBG("ODEngine", "SAHI DONE: %.1fms patches=%zu results=%zu cam=%s",
+						_sahiMs, patches.size() + 1, finalResults.size(), camera_id.c_str());
+				if (_sahiMs > 2000.0) {
+					ANS_DBG("ODEngine", "SAHI SLOW: %.1fms — %zu patches held _mutex entire time!",
+							_sahiMs, patches.size() + 1);
+				}
+			}
 			image.release();
 			return finalResults;
 		}
@@ -2103,6 +2117,8 @@ namespace ANSCENTER
 		// No coarse _mutex — sub-components (engines, trackers) have their own locks.
 		// LabVIEW semaphore controls concurrency at the caller level.
 		try {
+			ANS_DBG("ODEngine", "RunInferenceWithOption: cam=%s %dx%d mode=%s",
+					camera_id.c_str(), input.cols, input.rows, activeROIMode.c_str());
 			int mode = 0;
 			double confidenceThreshold = 0.35;
 			std::vector<int> trackingObjectIds;