diff --git a/app/src/main/cpp/camera2/ndkcamera.cpp b/app/src/main/cpp/camera2/ndkcamera.cpp
index 9d33c632..f2ca1508 100644
--- a/app/src/main/cpp/camera2/ndkcamera.cpp
+++ b/app/src/main/cpp/camera2/ndkcamera.cpp
@@ -1008,6 +1008,7 @@ void NdkCamera::close()
 	if (capture_session)
 	{
 		// res = ACameraCaptureSession_stopRepeating(capture_session);
+		XYLOG(XYLOG_SEVERITY_INFO, "free capture_session");
 		ACameraCaptureSession_close(capture_session);
 		capture_session = 0;
 	}
@@ -1021,6 +1022,7 @@ void NdkCamera::close()
 			res = ACaptureRequest_removeTarget(request->request, request->imageTarget);
 			ACaptureRequest_free(request->request);
 			request->request = 0;
+			XYLOG(XYLOG_SEVERITY_INFO, "free request");
 		}
 
 		/*
@@ -1033,22 +1035,26 @@ void NdkCamera::close()
 
 		delete request;
 	}
+	XYLOG(XYLOG_SEVERITY_INFO, "free mCaptureRequests");
 	mCaptureRequests.clear();
 
 	if (mPreviewOutputTarget != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mPreviewOutputTarget");
 		ACameraOutputTarget_free(mPreviewOutputTarget);
 		mPreviewOutputTarget = 0;
 	}
 
 	if (mPreviewImageWindow != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mPreviewImageWindow");
 		ANativeWindow_release(mPreviewImageWindow);
 		mPreviewImageWindow = 0;
 	}
 
 	if (mPreviewImageReader != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mPreviewImageReader");
 		AImageReader_setImageListener(mPreviewImageReader, NULL);
 		//XYLOG(XYLOG_SEVERITY_DEBUG, "CameraStatus::AImageReader_delete %s", mCameraId.c_str());
 		AImageReader_delete(mPreviewImageReader);
@@ -1059,18 +1065,21 @@ void NdkCamera::close()
 
 	if (mOutputTarget != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mOutputTarget");
 		ACameraOutputTarget_free(mOutputTarget);
 		mOutputTarget = 0;
 	}
 
 	if (mImageWindow != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mImageWindow");
 		ANativeWindow_release(mImageWindow);
 		mImageWindow = 0;
 	}
 
 	if (mImageReader != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mImageReader");
 		AImageReader_setImageListener(mImageReader, NULL);
 		//XYLOG(XYLOG_SEVERITY_DEBUG, "CameraStatus::AImageReader_delete %s", mCameraId.c_str());
 		AImageReader_delete(mImageReader);
@@ -1078,21 +1087,24 @@ void NdkCamera::close()
 
 		mImageReader = 0;
 	}
-
+	XYLOG(XYLOG_SEVERITY_INFO,"OutputTarget2");
     if (mOutputTarget2 != NULL)
     {
+		XYLOG(XYLOG_SEVERITY_INFO,"free OutputTarget2");
         ACameraOutputTarget_free(mOutputTarget2);
         mOutputTarget2 = 0;
     }
-
+	XYLOG(XYLOG_SEVERITY_INFO,"mImageWindow2");
     if (mImageWindow2 != NULL)
     {
+		XYLOG(XYLOG_SEVERITY_INFO,"free mImageWindow2");
         ANativeWindow_release(mImageWindow2);
         mImageWindow2 = 0;
     }
-
+	XYLOG(XYLOG_SEVERITY_INFO,"mImageReader2");
     if (mImageReader2 != NULL)
     {
+		XYLOG(XYLOG_SEVERITY_INFO,"free mImageReader2");
         AImageReader_setImageListener(mImageReader2, NULL);
         //XYLOG(XYLOG_SEVERITY_DEBUG, "CameraStatus::AImageReader_delete %s", mCameraId.c_str());
         AImageReader_delete(mImageReader2);
@@ -1100,9 +1112,10 @@ void NdkCamera::close()
 
         mImageReader2 = 0;
     }
-
+	XYLOG(XYLOG_SEVERITY_INFO,"mPreviewSessionOutput");
 	if (mPreviewSessionOutput != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mPreviewSessionOutput");
 		if (capture_session_output_container)
 		{
 			ACaptureSessionOutputContainer_remove(capture_session_output_container, mPreviewSessionOutput);
@@ -1113,6 +1126,7 @@ void NdkCamera::close()
 
 	if (mSessionOutput != NULL)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free mSessionOutput");
 		if (capture_session_output_container)
 		{
 			ACaptureSessionOutputContainer_remove(capture_session_output_container, mSessionOutput);
@@ -1122,6 +1136,7 @@ void NdkCamera::close()
 	}
     if (mSessionOutput2 != NULL)
     {
+		XYLOG(XYLOG_SEVERITY_INFO,"free mSessionOutput2");
         if (capture_session_output_container)
         {
             ACaptureSessionOutputContainer_remove(capture_session_output_container, mSessionOutput2);
@@ -1132,12 +1147,14 @@ void NdkCamera::close()
 
 	if (capture_session_output_container)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free capture_session_output_container");
 		ACaptureSessionOutputContainer_free(capture_session_output_container);
 		capture_session_output_container = 0;
 	}
 
 	if (camera_device)
 	{
+		XYLOG(XYLOG_SEVERITY_INFO,"free camera_device");
 		//XYLOG(XYLOG_SEVERITY_DEBUG, "CameraStatus::close device %s, %p", mCameraId.c_str(), camera_device);
 		ACameraDevice_close(camera_device);
 		//XYLOG(XYLOG_SEVERITY_DEBUG, "CameraStatus::closed device %s, %p", mCameraId.c_str(), camera_device);