stream数据位流(普通数据流转标准数据流)-vivado hls设计第二十一例

hahaha6016

1385人浏览 · 2025-11-16 09:51:40

hahaha6016 · 2025-11-16 09:51:40 发布

一、测试激励编写

#include "top.h"

#include "hls_opencv.h"

#include "iostream"

using namespace std;

using namespace cv;

int main (int argc, char** argv)
{

int len = 100;
ap_axiu<32,1,1,1> tmp;
ap_uint<32> tmp1;

hls::stream<ap_axiu<32,1,1,1> > dst_axi;
hls::stream<ap_uint<32> > src_axi;

for(int i=0;i<10;i++){//row
   //tmp.last = 0;
   for(int j=0;j<10;j++){//col
       //tmp.data(11,0)    = j;
       //tmp.data(23,12) = j;
       //tmp.data(35,24) = j;
       //tmp.data(47,36) = j;

       tmp1(7,0)    = j;
       tmp1(15,8) = j;
       tmp1(23,16) = j;
       tmp1(31,24) = j;

//       if(i==0 && j==0){
//           tmp.user = 1;
//       }
//       else{
//           tmp.user = 0;
//       }
//
//       if(j==9){
//           tmp.last = 1;
//       }
//       else{
//           tmp.last = 0;
//       }
       src_axi << tmp1;//write
   }
}

hls_video_scaler_top(dst_axi,src_axi,10,10);

//for(int i=0;i<100;i++){
//   //if(!dst_axi.empty())
//   dst_axi >> tmp1;
//   std::cout<<std::hex <<tmp1<<std::endl;
//}

//waitKey(0);

return 0;

}

二、顶层核心代码设计

#include "top.h"

void hls_video_scaler_top
(
   hls::stream<ap_axiu<32,1,1,1> >& dst_strm,//8*4
   hls::stream<ap_uint<32> >& src_strm,//8*4
   ap_uint<16> width,
   ap_uint<16> high
)
{
#pragma HLS INTERFACE ap_ctrl_none port=return
#pragma HLS INTERFACE ap_stable port=high
#pragma HLS INTERFACE ap_stable port=width
#pragma HLS INTERFACE axis register both port=dst_strm
#pragma HLS INTERFACE axis register both port=src_strm

ap_uint<32> data_tmp;
ap_axiu<32,1,1,1> strm_tmp;

bool sof = 1;

   for(ap_uint<16> i=0;i<high;i++){
       for(ap_uint<16> j=0;j<width;j++){
#pragma HLS LOOP_FLATTEN off
#pragma HLS pipeline II=1
           if(sof==1){
               strm_tmp.user = 1;//first pixel
               sof = 0;
           }
           else{
               strm_tmp.user = 0;
           }

           if((width-1)==j){
               strm_tmp.last = 1;
           }
           else{
               strm_tmp.last = 0;
           }
           src_strm >> data_tmp;//read
           strm_tmp.data = data_tmp;
           strm_tmp.keep = -1;
           dst_strm << strm_tmp;//write
       }
   }

}

三、综合和联合仿真

四、像素位宽转换后修改代码如下

#include "top.h"

ap_uint<32> data_tmp;
ap_axiu<32,1,1,1> strm_tmp;

bool sof = 1;

           if((width-1)==j){
               strm_tmp.last = 1;
           }
           else{
               strm_tmp.last = 0;
           }
           src_strm >> data_tmp;//read

           //当进行pixel像素转换的时候可以新增下面的代码设计
           for(ap_uint<3> k = 0;k<4;k++){
#pragma HLS UNROLL
               strm_tmp.data(8*(k+1)-1,8*k) = data_tmp(8*(k+1)-1,8*k);//pixel
           }

           strm_tmp.keep = -1;
           dst_strm << strm_tmp;//write
       }
   }

}