.. _program_listing_file__tmp_ws_src_vitis_common_include_aie_imgproc_xf_multiplication_aie.hpp:

Program Listing for File xf_multiplication_aie.hpp
==================================================

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

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

.. code-block:: cpp

   /*
    * Copyright 2021 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.
    */
   
   #include <adf.h>
   #include <aie_api/aie.hpp>
   #include <common/xf_aie_utils.hpp>
   
   #ifndef _AIE_MULTIPLICATION_H_
   #define _AIE_MULTIPLICATION_H_
   
   namespace xf {
   namespace cv {
   namespace aie {
   
   #define SRS_SHIFT 15
   template <typename T, int N>
   __attribute__((noinline)) void multiplication(const T* restrict img_in1,
                                                 const T* restrict img_in2,
                                                 T* restrict img_out,
                                                 const T& img_width,
                                                 const T& img_height,
                                                 const float& scale) {
       ::aie::vector<T, N> data_buf1;
       ::aie::vector<T, N> data_buf2;
       ::aie::vector<int32_t, N> temp_out;
       ::aie::accum<acc32, N> acc0;
       //    ::aie::vector<T, N> weight(1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638,1638);
   
       T fix_scale = ::aie::to_fixed<float>(scale, SRS_SHIFT); //(float)scale*(1<<15);
       ::aie::vector<T, N> weight = ::aie::broadcast<T, N>(fix_scale);
   
       for (int j = 0; j < (img_height * img_width); j += 16) // 16x samples per loop
           chess_prepare_for_pipelining chess_loop_range(16, )
   
           {
               data_buf1 = ::aie::load_v<N>(img_in1); //|00++15
               img_in1 += N;
   
               data_buf2 = ::aie::load_v<N>(img_in2); //|00++15
               img_in2 += N;
   
               acc0 = ::aie::mul(data_buf1, data_buf2);
   
               temp_out = acc0.template to_vector<int32_t>(0);
   
               acc0 = ::aie::mul(temp_out, weight);
   
               ::aie::store_v(img_out, acc0.template to_vector<T>(SRS_SHIFT)); // Write compute pixel to output buffer
               img_out += N;
           }
   }
   
   __attribute__((noinline)) void multiplication_api(input_window_int16* restrict img_in,
                                                     input_window_int16* restrict img_in1,
                                                     output_window_int16* restrict img_out,
                                                     const float& scale) {
       int16_t* img_in_ptr = (int16_t*)img_in->ptr;
       int16_t* img_in_ptr1 = (int16_t*)img_in1->ptr;
       int16_t* img_out_ptr = (int16_t*)img_out->ptr;
   
       const int16_t image_width = xfcvGetTileWidth(img_in_ptr);
       const int16_t image_height = xfcvGetTileHeight(img_in_ptr);
   
       xfcvCopyMetaData(img_in_ptr, img_out_ptr);
   
       int16_t* restrict ptr_in = xfcvGetImgDataPtr(img_in_ptr);
       int16_t* restrict ptr_in1 = xfcvGetImgDataPtr(img_in_ptr1);
       int16_t* restrict ptr_out = xfcvGetImgDataPtr(img_out_ptr);
   
       multiplication<int16_t, 16>(ptr_in, ptr_in1, ptr_out, image_width, image_height, scale);
   }
   
   } // aie
   } // cv
   } // xf
   
   #endif