From bd2d3292caaa3975d404b6e97feca1ef6fdfe7e4 Mon Sep 17 00:00:00 2001
From: Tuan Nghia Nguyen <nghia.nguyen@anscenter.com>
Date: Fri, 3 Apr 2026 15:23:20 +1100
Subject: [PATCH] Add log info to see if NV12 fast path is active

---
 modules/ANSODEngine/NV12PreprocessHelper.cpp | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/modules/ANSODEngine/NV12PreprocessHelper.cpp b/modules/ANSODEngine/NV12PreprocessHelper.cpp
index 5cd33a2..7724a27 100644
--- a/modules/ANSODEngine/NV12PreprocessHelper.cpp
+++ b/modules/ANSODEngine/NV12PreprocessHelper.cpp
@@ -346,18 +346,21 @@ namespace ANSCENTER {
             effUvLinesize = gpuData->uvLinesize;
         }
 
-        // Log path selection once
+        // Log path selection once — both spdlog and DebugView
         if (!m_nv12PathLogged) {
             m_nv12PathLogged = true;
             const char* pathName = useZeroCopy ? "CUDA_ZERO_COPY" : "CPU_NV12_UPLOAD";
-            logger.LogInfo(std::string(tag) + "::NV12Helper",
-                std::string("Path: ") + pathName +
+            auto msg = std::string("Path: ") + pathName +
                 " | isCuda=" + std::to_string(isCudaDevice) +
                 " gpuMatch=" + std::to_string(gpuMatch) +
                 " decodeGpu=" + std::to_string(gpuData->gpuIndex) +
                 " infGpu=" + std::to_string(inferenceGpu) +
-                " frame=" + std::to_string(frameW) + "x" + std::to_string(frameH),
-                __FILE__, __LINE__);
+                " frame=" + std::to_string(frameW) + "x" + std::to_string(frameH);
+            logger.LogInfo(std::string(tag) + "::NV12Helper", msg, __FILE__, __LINE__);
+#ifdef _WIN32
+            auto dbg = std::string("[NV12 ACTIVE] ") + tag + " " + msg + "\n";
+            OutputDebugStringA(dbg.c_str());
+#endif
         }
 
         cv::cuda::Stream stream;