Add demo_utils.

This commit splits the utils file into two different files:
utils and demo_utils, to overcome some opencv problems caused
by demo_utils includes.

Signed-off-by: Davide Sapienza <sapienza.dav@gmail.com>

include/tkDNN/demo_utils.h

@@ -0,0 +1,22 @@
+#ifndef DEMO_UTILS_H
+#define DEMO_UTILS_H
+
+#include <iostream>
+#include <sstream>
+#include <fstream>
+#include <iomanip>
+#include <stdlib.h>
+
+#ifdef __linux__
+#include <unistd.h>
+#include <opencv2/core/core.hpp>
+#include <opencv2/highgui/highgui.hpp>
+#include <opencv2/imgproc/imgproc.hpp>
+
+#include <yaml-cpp/yaml.h>
+#endif
+
+
+void readCalibrationMatrix(const std::string& path, cv::Mat& calib_mat);
+
+#endif //DEMO_UTILS_H

include/tkDNN/utils.h

@@ -15,11 +15,7 @@
 
 #ifdef __linux__
 #include <unistd.h>
-#include <opencv2/core/core.hpp>
-#include <opencv2/highgui/highgui.hpp>
-#include <opencv2/imgproc/imgproc.hpp>
 
-#include <yaml-cpp/yaml.h>
 #endif
 
 #include <ios>
@@ -137,7 +133,6 @@ void matrixMulAdd(  cublasHandle_t handle, dnnType* srcData, dnnType* dstData,
 void getMemUsage(double& vm_usage_kb, double& resident_set_kb);
 void printCudaMemUsage();
 void removePathAndExtension(const std::string &full_string, std::string &name);
-void readCalibrationMatrix(const std::string& path, cv::Mat& calib_mat);
 static inline bool isCudaPointer(void *data) {
   cudaPointerAttributes attr;
   return cudaPointerGetAttributes(&attr, data) == 0;