/usr/include/opencv2/gpu/devmem2d.hpp is in libopencv-gpu-dev 2.3.1-7.
This file is owned by root:root, with mode 0o644.
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#ifndef __OPENCV_GPU_DEVMEM2D_HPP__
#define __OPENCV_GPU_DEVMEM2D_HPP__
#if defined(__DEVCLASES_ADD_THRUST_BEGIN_END__)
#include "thrust/device_ptr.h"
#endif
namespace cv
{
namespace gpu
{
// Simple lightweight structures that encapsulates information about an image on device.
// It is intended to pass to nvcc-compiled code. GpuMat depends on headers that nvcc can't compile
#if defined(__CUDACC__)
#define __CV_GPU_HOST_DEVICE__ __host__ __device__ __forceinline__
#else
#define __CV_GPU_HOST_DEVICE__
#endif
template <bool expr> struct StaticAssert;
template <> struct StaticAssert<true> {static __CV_GPU_HOST_DEVICE__ void check(){}};
template <typename T> struct DevMem2D_
{
int cols;
int rows;
T* data;
size_t step;
DevMem2D_() : cols(0), rows(0), data(0), step(0) {}
DevMem2D_(int rows_, int cols_, T *data_, size_t step_)
: cols(cols_), rows(rows_), data(data_), step(step_) {}
template <typename U>
explicit DevMem2D_(const DevMem2D_<U>& d)
: cols(d.cols), rows(d.rows), data((T*)d.data), step(d.step) {}
typedef T elem_type;
enum { elem_size = sizeof(elem_type) };
__CV_GPU_HOST_DEVICE__ size_t elemSize() const { return elem_size; }
__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return (T*)( (char*)data + y * step ); }
__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return (const T*)( (const char*)data + y * step ); }
__CV_GPU_HOST_DEVICE__ operator T*() const { return data; }
#if defined(__DEVCLASES_ADD_THRUST_BEGIN_END__)
thrust::device_ptr<T> begin() const { return thrust::device_ptr<T>(data); }
thrust::device_ptr<T> end() const { return thrust::device_ptr<T>(data) + cols * rows; }
#endif
};
template<typename T> struct PtrStep_
{
T* data;
size_t step;
PtrStep_() : data(0), step(0) {}
PtrStep_(const DevMem2D_<T>& mem) : data(mem.data), step(mem.step) {}
typedef T elem_type;
enum { elem_size = sizeof(elem_type) };
__CV_GPU_HOST_DEVICE__ size_t elemSize() const { return elem_size; }
__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return (T*)( (char*)data + y * step); }
__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return (const T*)( (const char*)data + y * step); }
#if defined(__DEVCLASES_ADD_THRUST_BEGIN_END__)
thrust::device_ptr<T> begin() const { return thrust::device_ptr<T>(data); }
#endif
};
template<typename T> struct PtrElemStep_ : public PtrStep_<T>
{
PtrElemStep_(const DevMem2D_<T>& mem) : PtrStep_<T>(mem)
{
StaticAssert<256 % sizeof(T) == 0>::check();
PtrStep_<T>::step /= PtrStep_<T>::elem_size;
}
__CV_GPU_HOST_DEVICE__ T* ptr(int y = 0) { return PtrStep_<T>::data + y * PtrStep_<T>::step; }
__CV_GPU_HOST_DEVICE__ const T* ptr(int y = 0) const { return PtrStep_<T>::data + y * PtrStep_<T>::step; }
};
typedef DevMem2D_<unsigned char> DevMem2D;
typedef DevMem2D_<float> DevMem2Df;
typedef DevMem2D_<int> DevMem2Di;
typedef PtrStep_<unsigned char> PtrStep;
typedef PtrStep_<float> PtrStepf;
typedef PtrStep_<int> PtrStepi;
typedef PtrElemStep_<unsigned char> PtrElemStep;
typedef PtrElemStep_<float> PtrElemStepf;
typedef PtrElemStep_<int> PtrElemStepi;
#undef __CV_GPU_HOST_DEVICE__
}
}
#endif /* __OPENCV_GPU_DEVMEM2D_HPP__ */
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