#include <iostream>
#include <hls_stream.h>
#include <ap_axi_sdata.h>
#include <math.h>


using namespace std;

typedef ap_axis <32,1,1,1> AXI_T;
typedef hls::stream<AXI_T> STREAM_T;

void stream_down(STREAM_T &A, STREAM_T &B, STREAM_T &C,int option){

#pragma HLS INTERFACE axis port=A
#pragma HLS INTERFACE axis port=B
#pragma HLS INTERFACE axis port=C
#pragma HLS INTERFACE s_axilite port=option bundle=CRTL_BUS
#pragma HLS INTERFACE s_axilite port=return bundle=CRTL_BUS

	    AXI_T tmpA, tmpB,tmpC;

	    int LEN=100;

	    if(option==1)
	    {
	    for(int i=0; i<LEN; i++){

	        B >> tmpB;
	        tmpA.data = tmpB.data;

	        if(i == LEN-1){

				tmpA.last =1;
			}else{
				tmpA.last = tmpB.last;

			}

			tmpA.keep = 0xf;
			A << tmpA;

	    	}
	    }

	    else if(option==2)
	    {
	    for(int i=0; i<LEN; i++){

	        C >> tmpC;
	        tmpA.data = tmpC.data;

	        if(i == LEN-1){

				tmpA.last =1;
			}else{
				tmpA.last = tmpC.last;

			}

			tmpA.keep = 0xf;
			A << tmpA;

	    }
	 }

	    else
	    {
	    for(int i=0; i<LEN; i++){

	        C >> tmpC;
	        tmpA.data = tmpC.data;

	        if(i == LEN-1){

				tmpA.last =1;
			}else{
				tmpA.last = 0;
				tmpA.last=tmpC.last;

			}

			tmpA.keep = 0xf;
			A << tmpA;

	    }
	 }


	}