sustaining_gazes/lib/3rdParty/OpenCV3.4/include/opencv2/dnn/shape_utils.hpp

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#ifndef OPENCV_DNN_DNN_SHAPE_UTILS_HPP
#define OPENCV_DNN_DNN_SHAPE_UTILS_HPP
#include <opencv2/core.hpp>
#include <opencv2/core/types_c.h>
#include <ostream>
namespace cv {
namespace dnn {
CV__DNN_EXPERIMENTAL_NS_BEGIN
//Useful shortcut
inline std::ostream &operator<< (std::ostream &s, cv::Range &r)
{
return s << "[" << r.start << ", " << r.end << ")";
}
//Slicing
struct _Range : public cv::Range
{
_Range(const Range &r) : cv::Range(r) {}
_Range(int start_, int size_ = 1) : cv::Range(start_, start_ + size_) {}
};
static inline Mat slice(const Mat &m, const _Range &r0)
{
Range ranges[CV_MAX_DIM];
for (int i = 1; i < m.dims; i++)
ranges[i] = Range::all();
ranges[0] = r0;
return m(&ranges[0]);
}
static inline Mat slice(const Mat &m, const _Range &r0, const _Range &r1)
{
CV_Assert(m.dims >= 2);
Range ranges[CV_MAX_DIM];
for (int i = 2; i < m.dims; i++)
ranges[i] = Range::all();
ranges[0] = r0;
ranges[1] = r1;
return m(&ranges[0]);
}
static inline Mat slice(const Mat &m, const _Range &r0, const _Range &r1, const _Range &r2)
{
CV_Assert(m.dims >= 3);
Range ranges[CV_MAX_DIM];
for (int i = 3; i < m.dims; i++)
ranges[i] = Range::all();
ranges[0] = r0;
ranges[1] = r1;
ranges[2] = r2;
return m(&ranges[0]);
}
static inline Mat slice(const Mat &m, const _Range &r0, const _Range &r1, const _Range &r2, const _Range &r3)
{
CV_Assert(m.dims >= 4);
Range ranges[CV_MAX_DIM];
for (int i = 4; i < m.dims; i++)
ranges[i] = Range::all();
ranges[0] = r0;
ranges[1] = r1;
ranges[2] = r2;
ranges[3] = r3;
return m(&ranges[0]);
}
static inline Mat getPlane(const Mat &m, int n, int cn)
{
CV_Assert(m.dims > 2);
int sz[CV_MAX_DIM];
for(int i = 2; i < m.dims; i++)
{
sz[i-2] = m.size.p[i];
}
return Mat(m.dims - 2, sz, m.type(), (void*)m.ptr<float>(n, cn));
}
static inline MatShape shape(const int* dims, const int n = 4)
{
MatShape shape;
shape.assign(dims, dims + n);
return shape;
}
static inline MatShape shape(const Mat& mat)
{
return shape(mat.size.p, mat.dims);
}
static inline MatShape shape(const UMat& mat)
{
return shape(mat.size.p, mat.dims);
}
namespace {inline bool is_neg(int i) { return i < 0; }}
static inline MatShape shape(int a0, int a1=-1, int a2=-1, int a3=-1)
{
int dims[] = {a0, a1, a2, a3};
MatShape s = shape(dims);
s.erase(std::remove_if(s.begin(), s.end(), is_neg), s.end());
return s;
}
static inline int total(const MatShape& shape, int start = -1, int end = -1)
{
if (start == -1) start = 0;
if (end == -1) end = (int)shape.size();
if (shape.empty())
return 0;
int elems = 1;
CV_Assert(start <= (int)shape.size() && end <= (int)shape.size() &&
start <= end);
for(int i = start; i < end; i++)
{
elems *= shape[i];
}
return elems;
}
static inline MatShape concat(const MatShape& a, const MatShape& b)
{
MatShape c = a;
c.insert(c.end(), b.begin(), b.end());
return c;
}
inline void print(const MatShape& shape, const String& name = "")
{
printf("%s: [", name.c_str());
size_t i, n = shape.size();
for( i = 0; i < n; i++ )
printf(" %d", shape[i]);
printf(" ]\n");
}
inline int clamp(int ax, int dims)
{
return ax < 0 ? ax + dims : ax;
}
inline int clamp(int ax, const MatShape& shape)
{
return clamp(ax, (int)shape.size());
}
inline Range clamp(const Range& r, int axisSize)
{
Range clamped(std::max(r.start, 0),
r.end > 0 ? std::min(r.end, axisSize) : axisSize + r.end + 1);
CV_Assert(clamped.start < clamped.end, clamped.end <= axisSize);
return clamped;
}
CV__DNN_EXPERIMENTAL_NS_END
}
}
#endif