From c54791fdb2fd5a6da6cf0f3426e3a42ecda25a8b Mon Sep 17 00:00:00 2001
From: Vipin Thomas <vipin.thomas@stud.th-deg.de>
Date: Tue, 22 Jun 2021 13:47:39 +0000
Subject: [PATCH] Add new file
---
pixel_original.c | 131 +++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 131 insertions(+)
create mode 100644 pixel_original.c
diff --git a/pixel_original.c b/pixel_original.c
new file mode 100644
index 0000000..2733742
--- /dev/null
+++ b/pixel_original.c
@@ -0,0 +1,131 @@
+#include <stdio.h>
+#include <hls_stream.h>
+#include <ap_axi_sdata.h>
+#include<math.h>
+#include <string.h>
+
+using namespace std;
+
+typedef ap_axis<32,0,0,0> pkt_t;
+static int count_streams = 0;
+static long long charIn=0;
+static long long final_char=0;
+int addNum=0;
+
+long long convert(int n);
+int convertBinInt(long long n);
+void decrypt(int data);
+
+
+void pixel(ap_int<32> selector,
+ ap_int<32> position1,
+ ap_int<32> position2,
+ ap_int<32> stream_count,
+ ap_int<32> &ascii,
+ hls::stream< pkt_t > &din,
+ hls::stream< pkt_t > &dout
+) {
+ #pragma HLS INTERFACE ap_ctrl_none port=return
+ #pragma HLS INTERFACE s_axilite port=selector
+ #pragma HLS INTERFACE s_axilite port=position1
+ #pragma HLS INTERFACE s_axilite port=position2
+ #pragma HLS INTERFACE s_axilite port=stream_count
+ #pragma HLS INTERFACE s_axilite port=ascii
+ #pragma HLS INTERFACE axis port=din
+ #pragma HLS INTERFACE axis port=dout
+
+ pkt_t pkt=din.read();
+
+ switch(selector)
+ {
+ case 0:
+
+ if (count_streams == 0){
+ charIn=convert(ascii);
+ final_char=0;
+ }
+
+ if((count_streams >= 3 * (position1 - 1)) && (count_streams < 3 * (position2) - 1)){
+ addNum=0;
+ if(charIn!=0){
+ addNum=charIn%10;
+ charIn=(int)charIn/10;
+ }
+
+ if(pkt.data % 2 == 0 && addNum == 1){
+ pkt.data += 1;
+ }else if(pkt.data % 2 != 0 && addNum == 0){
+ pkt.data -= 1;
+ }
+
+ }
+
+ break;
+
+ case 1:
+
+ if((count_streams >= 3 * (position1 - 1)) && (count_streams < 3 * (position2)-1)){
+
+
+ decrypt(pkt.data);
+
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ count_streams++;
+
+ if (count_streams == stream_count){
+ count_streams = 0;
+ charIn=0;
+ addNum=0;
+ ascii=0;
+ if(selector == 1){
+ ascii= convertBinInt(final_char);
+ final_char=0;
+ }
+
+ }
+
+ dout.write(pkt);
+}
+
+
+long long convert(int n) {
+ long long bin = 0;
+ int rem, i = 1, step = 1;
+ while (n != 0) {
+ rem = n % 2;
+ n /= 2;
+ bin += rem * i;
+ i *= 10;
+ }
+ return bin;
+}
+
+void decrypt(int data) {
+int bit;
+if(data % 2 == 0){
+ bit = 0;
+}else if(data % 2 != 0){
+ bit=1;
+}
+final_char= final_char*10+bit;
+
+}
+
+int convertBinInt(long long n) {
+int dec = 0, i = 7, b=0,rem=0;
+ while (n != 0) {
+ b=pow(10,i);
+ rem = n / b;
+ n =n % b;
+ dec += rem * pow(2, 7-i);
+ --i;
+ }
+ return dec;
+}
+
--
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