[Issue #7290] Fixes OpenNI and OpenNI2 linking conflict

modules/videoio/src/cap.cpp

@@ -340,6 +340,12 @@ CV_IMPL CvCapture * cvCreateFileCaptureWithPreference (const char * filename, in
         if (apiPreference) break;
 #endif
 
+#ifdef HAVE_OPENNI2
+    case CV_CAP_OPENNI2:
+        TRY_OPEN(result, cvCreateFileCapture_OpenNI2 (filename))
+        if (apiPreference) break;
+#endif
+
     case CV_CAP_IMAGES:
         TRY_OPEN(result, cvCreateFileCapture_Images (filename))
     }

modules/videoio/src/cap_openni2.cpp

@@ -1086,7 +1086,7 @@ CvCapture* cvCreateCameraCapture_OpenNI2( int index )
     return 0;
 }
 
-CvCapture* cvCreateFileCapture_OpenNI( const char* filename )
+CvCapture* cvCreateFileCapture_OpenNI2( const char* filename )
 {
     CvCapture_OpenNI2* capture = new CvCapture_OpenNI2( filename );
 

modules/videoio/src/precomp.hpp

@@ -124,6 +124,7 @@ CvVideoWriter* cvCreateVideoWriter_MSMF( const char* filename, int fourcc,
 CvCapture* cvCreateCameraCapture_OpenNI( int index );
 CvCapture* cvCreateCameraCapture_OpenNI2( int index );
 CvCapture* cvCreateFileCapture_OpenNI( const char* filename );
+CvCapture* cvCreateFileCapture_OpenNI2( const char* filename );
 CvCapture* cvCreateCameraCapture_Android( int index );
 CvCapture* cvCreateCameraCapture_XIMEA( int index );
 CvCapture* cvCreateCameraCapture_AVFoundation(int index);