opencv/modules/ocl/src/columnsum.cpp

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// @Authors
//    Chunpeng Zhang, chunpeng@multicorewareinc.com
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#include <iomanip>
#include "precomp.hpp"

using namespace cv;
using namespace cv::ocl;
using namespace std;


#if !defined(HAVE_OPENCL)

void cv::ocl::columnSum(const oclMat& src,oclMat& dst){ throw_nogpu(); }

#else /*!HAVE_OPENCL */

namespace cv 
{ 
	namespace ocl
	{
		extern const char* imgproc_columnsum;
	}
}

void cv::ocl::columnSum(const oclMat& src,oclMat& dst)
{
	CV_Assert(src.type() == CV_32FC1);

	dst.create(src.size(), src.type());

	Context *clCxt = src.clCxt;                                        
		       
	const std::string kernelName = "columnSum";
		
	std::vector< pair<size_t, const void *> > args;

	args.push_back( make_pair( sizeof(cl_mem), (void *)&src.data));		
	args.push_back( make_pair( sizeof(cl_mem), (void *)&dst.data));			
	args.push_back( make_pair( sizeof(cl_int), (void *)&src.cols));		
	args.push_back( make_pair( sizeof(cl_int), (void *)&src.rows));			
	args.push_back( make_pair( sizeof(cl_int), (void *)&src.step));		
	args.push_back( make_pair( sizeof(cl_int), (void *)&dst.step));		

	size_t globalThreads[3] = {dst.cols, 1, 1};					
	size_t localThreads[3]  = {16, 16, 1};		

	openCLExecuteKernel(clCxt, &imgproc_columnsum, kernelName, globalThreads, localThreads, args, src.channels(), src.depth());

}
#endif