.. _program_listing_file__tmp_ws_src_vitis_common_include_imgproc_xf_delay.hpp:

Program Listing for File xf_delay.hpp
=====================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_vitis_common_include_imgproc_xf_delay.hpp>` (``/tmp/ws/src/vitis_common/include/imgproc/xf_delay.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 __cplusplus
   #error C++ is needed to include this header
   #endif
   
   #include "hls_stream.h"
   #include "../common/xf_common.hpp"
   #include "../common/xf_utility.hpp"
   
   namespace xf {
   namespace cv {
   
   template <int MAXDELAY, int SRC_T, int ROWS, int COLS, int NPC>
   void delayMat(xf::cv::Mat<SRC_T, ROWS, COLS, NPC>& _src, xf::cv::Mat<SRC_T, ROWS, COLS, NPC>& _dst) {
   // clang-format off
       #pragma HLS inline off
       // clang-format on
   
       // clang-format off
     //  #pragma HLS dataflow
       // clang-format on
   
       hls::stream<XF_TNAME(SRC_T, NPC)> src;
       hls::stream<XF_TNAME(SRC_T, NPC)> dst;
   
   /********************************************************/
   
   Read_yuyv_Loop:
       for (int i = 0; i < _src.rows; i++) {
   // clang-format off
           #pragma HLS LOOP_TRIPCOUNT min=1 max=ROWS
           // clang-format on
           for (int j = 0; j<(_src.cols)>> (XF_BITSHIFT(NPC)); j++) {
   // clang-format off
               #pragma HLS LOOP_TRIPCOUNT min=1 max=COLS/NPC
               #pragma HLS PIPELINE
               #pragma HLS loop_flatten off
               // clang-format on
               src.write(_src.read(i * (_src.cols >> (XF_BITSHIFT(NPC))) + j));
           }
       }
   
   // clang-format off
       #pragma HLS stream depth=MAXDELAY variable=src
       // clang-format on
   
       for (int i = 0; i < _dst.rows; i++) {
   // clang-format off
           #pragma HLS LOOP_TRIPCOUNT min=1 max=ROWS
           // clang-format on
           for (int j = 0; j<(_dst.cols)>> (XF_BITSHIFT(NPC)); j++) {
   // clang-format off
               #pragma HLS LOOP_TRIPCOUNT min=1 max=COLS/NPC
               #pragma HLS PIPELINE
               #pragma HLS loop_flatten off
               // clang-format on
               _dst.write((i * (_dst.cols >> (XF_BITSHIFT(NPC))) + j), src.read());
           }
       }
   }
   } // namespace cv
   } // namespace xf