opencv/modules/ocl/src/columnsum.cpp

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

using namespace cv;
using namespace cv::ocl;

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 String kernelName = "columnSum";

    std::vector< std::pair<size_t, const void *> > args;

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

    size_t globalThreads[3] = {dst.cols, 1, 1};
    size_t localThreads[3]  = {256, 1, 1};

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

}