.. _program_listing_file__tmp_ws_src_vitis_common_include_aie_imgproc_xf_convertscaleabs_aie.hpp:

Program Listing for File xf_convertscaleabs_aie.hpp
===================================================

|exhale_lsh| :ref:`Return to documentation for file <file__tmp_ws_src_vitis_common_include_aie_imgproc_xf_convertscaleabs_aie.hpp>` (``/tmp/ws/src/vitis_common/include/aie/imgproc/xf_convertscaleabs_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 <common/xf_aie_utils.hpp>
   
   #ifndef _AIE_CONVERTSCALEABS_H_
   #define _AIE_CONVERTSCALEABS_H_
   
   #define SHIFT_CNT 8
   #include <aie_api/aie.hpp>
   
   namespace xf {
   namespace cv {
   namespace aie {
   
   template <int N, typename T>
   inline void convertscaleabs(const T* restrict img_in,
                               T* restrict img_out,
                               const int16_t img_width,
                               const int16_t img_height,
                               const float alpha,
                               const float beta) {
       int16_t alpha_q1dot15 = float2fix(alpha, SHIFT_CNT); //(alpha * (1 << 15));
       int16_t beta_q1dot15 = float2fix(beta, SHIFT_CNT);   //(beta * (1 << 15));
   
       ::aie::vector<T, N> data_buf1;
       ::aie::vector<T, N> alpha_reg;
       ::aie::vector<T, N> beta_reg;
   
       ::aie::accum<acc32, N> acc;
       ::aie::accum<acc32, N> beta_out;
   
       for (int i = 0; i < 16; i++) {
           beta_reg[i] = beta_q1dot15;
           alpha_reg[i] = alpha_q1dot15;
       }
   
       beta_out.from_vector(beta_reg);
   
       set_sat();
       for (int j = 0; j < (img_height * img_width); j += 16) // 32x samples per loop
           chess_prepare_for_pipelining chess_loop_range(14, )
   
           {
               data_buf1 = ::aie::load_v<N>(img_in); // in1:00++15|_________|_________|_________
               img_in += N;
               acc = ::aie::mac(beta_out, alpha_reg, data_buf1);
               ::aie::store_v(img_out, acc.template to_vector<uint8_t>(SHIFT_CNT).unpack());
               img_out += N;
           }
       clr_sat();
   }
   
   void convertscaleabs_api(input_window_int16* img_in,
                            output_window_int16* img_out,
                            const float& alpha,
                            const float& beta) {
       int16_t* img_in_ptr = (int16_t*)img_in->ptr;
       int16_t* img_out_ptr = (int16_t*)img_out->ptr;
   
       const int16_t img_width = xfcvGetTileWidth(img_in_ptr);
       const int16_t img_height = xfcvGetTileHeight(img_in_ptr);
   
       xfcvCopyMetaData(img_in_ptr, img_out_ptr);
   
       int16_t* ptr0 = (int16_t*)xfcvGetImgDataPtr(img_in_ptr);
       int16_t* ptr_out = (int16_t*)xfcvGetImgDataPtr(img_out_ptr);
   
       convertscaleabs<16, int16_t>(ptr0, ptr_out, img_width, img_height, alpha, beta);
   }
   
   } // aie
   } // cv
   } // xf
   #endif