Function flipHorizontal

src/cpu_depth_packet_processor.cpp:240–259

 */
template<typename ScalarT>
void flipHorizontal(const Mat<ScalarT> &in, Mat<ScalarT>& out)
{
  in.copyTo(out);
  
  typedef unsigned char type;

  int linestep = out.sizeInBytes() / out.height() / sizeof(type);

  type *first_line = reinterpret_cast<type *>(out.buffer()), *last_line = reinterpret_cast<type *>(out.buffer()) + (out.height() - 1) * linestep;


  for(int y = 0; y < out.height() / 2; ++y)
  {
    for(int x = 0; x < linestep; ++x, ++first_line, ++last_line)
    {
      std::swap(*first_line, *last_line);
    }
    last_line -= 2 * linestep;
  }
}

namespace libfreenect2
{