Added to CV_INIT_ALGORITHM a Ptr creation function, for convenience.

Also changed the static functions to inline, to stop GCC complaining
about unused functions.

modules/contrib/src/facerec.cpp

@@ -894,7 +894,7 @@ CV_INIT_ALGORITHM(LBPH, "FaceRecognizer.LBPH",
 
 bool initModule_contrib()
 {
-    Ptr<Algorithm> efaces = createEigenfaces_hidden(), ffaces = createFisherfaces_hidden(), lbph = createLBPH_hidden();
+    Ptr<Algorithm> efaces = createEigenfaces_ptr_hidden(), ffaces = createFisherfaces_ptr_hidden(), lbph = createLBPH_ptr_hidden();
     return efaces->info() != 0 && ffaces->info() != 0 && lbph->info() != 0;
 }
 

modules/core/include/opencv2/core/private.hpp

@@ -128,12 +128,17 @@ namespace cv
 } //namespace cv
 
 #define CV_INIT_ALGORITHM(classname, algname, memberinit) \
-    static ::cv::Algorithm* create##classname##_hidden() \
+    static inline ::cv::Algorithm* create##classname##_hidden() \
     { \
         return new classname; \
     } \
     \
-    static ::cv::AlgorithmInfo& classname##_info() \
+    static inline ::cv::Ptr< ::cv::Algorithm> create##classname##_ptr_hidden() \
+    { \
+        return ::cv::makePtr<classname>(); \
+    } \
+    \
+    static inline ::cv::AlgorithmInfo& classname##_info() \
     { \
         static ::cv::AlgorithmInfo classname##_info_var(algname, create##classname##_hidden); \
         return classname##_info_var; \

modules/ml/src/ml_init.cpp

@@ -56,7 +56,7 @@ CV_INIT_ALGORITHM(EM, "StatModel.EM",
 
 bool initModule_ml(void)
 {
-    Ptr<Algorithm> em = createEM_hidden();
+    Ptr<Algorithm> em = createEM_ptr_hidden();
     return em->info() != 0;
 }
 

modules/nonfree/src/nonfree_init.cpp

@@ -67,7 +67,7 @@ CV_INIT_ALGORITHM(SIFT, "Feature2D.SIFT",
 
 bool initModule_nonfree(void)
 {
-    Ptr<Algorithm> sift = createSIFT_hidden(), surf = createSURF_hidden();
+    Ptr<Algorithm> sift = createSIFT_ptr_hidden(), surf = createSURF_ptr_hidden();
     return sift->info() != 0 && surf->info() != 0;
 }
 

modules/softcascade/src/softcascade_init.cpp

@@ -58,8 +58,8 @@ CV_INIT_ALGORITHM(SCascade, "CascadeDetector.SCascade",
 
 bool initModule_softcascade(void)
 {
-    Ptr<Algorithm> sc = createSCascade_hidden();
-    Ptr<Algorithm> sc1 = createDetector_hidden();
+    Ptr<Algorithm> sc = createSCascade_ptr_hidden();
+    Ptr<Algorithm> sc1 = createDetector_ptr_hidden();
     return (sc1->info() != 0) && (sc->info() != 0);
 }