Fix OpenCL build warnings

modules/ocl/src/hough.cpp

@@ -59,18 +59,6 @@ void cv::ocl::HoughCirclesDownload(const oclMat&, OutputArray) { throw_nogpu();
 namespace cv { namespace ocl {
     ///////////////////////////OpenCL kernel strings///////////////////////////
     extern const char *imgproc_hough;
-
-    namespace hough
-    {
-        int buildPointList_gpu(const oclMat& src, oclMat& list);
-        void circlesAccumCenters_gpu(const unsigned int* list, int count, const oclMat& dx, const oclMat& dy, oclMat& accum, int minRadius, int maxRadius, float idp);
-        int buildCentersList_gpu(const oclMat& accum, oclMat& centers, int threshold);
-
-        int circlesAccumRadius_gpu(const oclMat& centers, int centersCount,
-                                   const oclMat& list, int count,
-                                   oclMat& circles, int maxCircles,
-                                   float dp, int minRadius, int maxRadius, int threshold);
-    }
 }}
 
 
@@ -78,7 +66,7 @@ namespace cv { namespace ocl {
 //////////////////////////////////////////////////////////
 // common functions
 
-namespace cv { namespace ocl { namespace hough
+namespace
 {
     int buildPointList_gpu(const oclMat& src, oclMat& list)
     {
@@ -116,12 +104,12 @@ namespace cv { namespace ocl { namespace hough
 
         return totalCount;
     }
-}}}
+}
 
 //////////////////////////////////////////////////////////
 // HoughCircles
 
-namespace cv { namespace ocl { namespace hough
+namespace
 {
     void circlesAccumCenters_gpu(const oclMat& list, int count, const oclMat& dx, const oclMat& dy, oclMat& accum, int minRadius, int maxRadius, float idp)
     {
@@ -239,7 +227,7 @@ namespace cv { namespace ocl { namespace hough
     }
 
 
-}}} // namespace cv { namespace ocl { namespace hough
+} // namespace
 
 
 
@@ -267,7 +255,7 @@ void cv::ocl::HoughCircles(const oclMat& src, oclMat& circles, HoughCirclesBuf&
     cv::ocl::Canny(src, buf.cannyBuf, buf.edges, std::max(cannyThreshold / 2, 1), cannyThreshold);
 
     ensureSizeIsEnough(1, src.size().area(), CV_32SC1, buf.srcPoints);
-    const int pointsCount = hough::buildPointList_gpu(buf.edges, buf.srcPoints);
+    const int pointsCount = buildPointList_gpu(buf.edges, buf.srcPoints);
     if (pointsCount == 0)
     {
         circles.release();
@@ -277,10 +265,10 @@ void cv::ocl::HoughCircles(const oclMat& src, oclMat& circles, HoughCirclesBuf&
     ensureSizeIsEnough(cvCeil(src.rows * idp) + 2, cvCeil(src.cols * idp) + 2, CV_32SC1, buf.accum);
     buf.accum.setTo(Scalar::all(0));
 
-    hough::circlesAccumCenters_gpu(buf.srcPoints, pointsCount, buf.cannyBuf.dx, buf.cannyBuf.dy, buf.accum, minRadius, maxRadius, idp);
+    circlesAccumCenters_gpu(buf.srcPoints, pointsCount, buf.cannyBuf.dx, buf.cannyBuf.dy, buf.accum, minRadius, maxRadius, idp);
 
     ensureSizeIsEnough(1, src.size().area(), CV_32SC1, buf.centers);
-    int centersCount = hough::buildCentersList_gpu(buf.accum, buf.centers, votesThreshold);
+    int centersCount = buildCentersList_gpu(buf.accum, buf.centers, votesThreshold);
     if (centersCount == 0)
     {
         circles.release();
@@ -384,7 +372,7 @@ void cv::ocl::HoughCircles(const oclMat& src, oclMat& circles, HoughCirclesBuf&
 
     ensureSizeIsEnough(1, maxCircles, CV_32FC3, circles);
 
-    const int circlesCount = hough::circlesAccumRadius_gpu(buf.centers, centersCount,
+    const int circlesCount = circlesAccumRadius_gpu(buf.centers, centersCount,
                                                            buf.srcPoints, pointsCount,
                                                            circles, maxCircles,
                                                            dp, minRadius, maxRadius, votesThreshold);