opencv/modules/gpu/src/imgproc_gpu.cpp

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#include "precomp.hpp"

using namespace cv;
using namespace cv::gpu;

#if !defined (HAVE_CUDA)

void cv::gpu::remap(const GpuMat& /*src*/, const GpuMat& /*xmap*/, const GpuMat& /*ymap*/, GpuMat& /*dst*/) { throw_nogpu(); }

#else /* !defined (HAVE_CUDA) */

namespace cv { namespace gpu 
{ 
    namespace impl 
    {
        extern "C" void remap_gpu(const DevMem2D& src, const DevMem2D_<float>& xmap, const DevMem2D_<float>& ymap, DevMem2D dst);
    }
}}

void cv::gpu::remap(const GpuMat& src, const GpuMat& xmap, const GpuMat& ymap, GpuMat& dst)
{ 
    CV_DbgAssert(xmap.data && xmap.cols == ymap.cols && xmap.rows == ymap.rows);
    CV_Assert(xmap.type() == CV_32F && ymap.type() == CV_32F);

    dst.create(xmap.size(), src.type());
    CV_Assert(dst.data != src.data);   
    
    impl::remap_gpu(src, xmap, ymap, dst);
}

#endif /* !defined (HAVE_CUDA) */