.. _program_listing_file__tmp_ws_src_vitis_common_include_imgproc_xf_corner_img_to_list.hpp:

Program Listing for File xf_corner_img_to_list.hpp
==================================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_vitis_common_include_imgproc_xf_corner_img_to_list.hpp>` (``/tmp/ws/src/vitis_common/include/imgproc/xf_corner_img_to_list.hpp``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   /*
    * Copyright 2019 Xilinx, Inc.
    *
    * Licensed under the Apache License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    *
    *     http://www.apache.org/licenses/LICENSE-2.0
    *
    * Unless required by applicable law or agreed to in writing, software
    * distributed under the License is distributed on an "AS IS" BASIS,
    * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    * See the License for the specific language governing permissions and
    * limitations under the License.
    */
   
   #ifndef __XF_CORNER_DENSE_TO_SPARSE_HPP__
   #define __XF_CORNER_DENSE_TO_SPARSE_HPP__
   #include "ap_int.h"
   #include "hls_stream.h"
   #include "../common/xf_common.hpp"
   namespace xf {
   namespace cv {
   template <unsigned int MAXCORNERSNO, unsigned int TYPE, unsigned int ROWS, unsigned int COLS, unsigned int NPC>
   void cornersImgToList(xf::cv::Mat<TYPE, ROWS, COLS, NPC>& _src,
                         unsigned int list[MAXCORNERSNO],
                         unsigned int* ncorners) {
       int cornerCount = 0;
       for (unsigned short i = 0; i < _src.rows; i++) {
           for (unsigned short j = 0; j < _src.cols; j++) {
   // clang-format off
               #pragma HLS PIPELINE
               // clang-format on
               ap_uint<8> tempValue = _src.read(i * _src.cols + j);
               if (tempValue == 255 && cornerCount < MAXCORNERSNO) // value is 255 if there's a corner
               {
                   ap_uint<32> point;
                   point.range(31, 16) = i;
                   point.range(15, 0) = j;
   
                   list[cornerCount] = (unsigned int)point;
                   cornerCount++;
               }
           }
       }
       *ncorners = cornerCount;
       for (int i = cornerCount; i < MAXCORNERSNO; i++) {
   // clang-format off
           #pragma HLS PIPELINE
           // clang-format on
           list[i] = 0;
       }
   }
   } // namespace cv
   } // namespace xf
   #endif