From 841b60a2ac7d03feb7cd60aabd60998d91ff896f Mon Sep 17 00:00:00 2001
From: Vipin Thomas <vipin.thomas@stud.th-deg.de>
Date: Sat, 5 Jun 2021 21:08:45 +0000
Subject: [PATCH] Update pixel.cpp
---
pixel.cpp | 62 +++++++++++++++++++++++++++++++++++++++++++++----------
1 file changed, 51 insertions(+), 11 deletions(-)
diff --git a/pixel.cpp b/pixel.cpp
index ecb2850..4f6c1a7 100644
--- a/pixel.cpp
+++ b/pixel.cpp
@@ -7,11 +7,16 @@ using namespace std;
typedef ap_axis<32,0,0,0> pkt_t;
static int count_streams = 0;
static long long charIn=0;
+static int addNum=0;
+static int decrpyt=0;
+static long long asciiNum=0;
+static int asciiVal=0;
-long long convert(int n)
+long long convert(int n);
long long toAscii(chr number);
int convertBinInt(long long n);
-
+char stegnoDcrypt(int data);
+void stegno(char c);
void pixel(
ap_int<32> position1,
@@ -28,21 +33,26 @@ void pixel(
#pragma HLS INTERFACE s_axilite port=w
#pragma HLS INTERFACE s_axilite port=h
#pragma HLS INTERFACE s_axilite port=character
+ #pragma HLS INTERFACE s_axilite port=selector //switch for encrypt and decrypt
#pragma HLS INTERFACE axis port=din
#pragma HLS INTERFACE axis port=dout
+ pkt_t pkt=din.read();
- charIn=toAscii(character)
+ switch(selector)
+ {
+ case 0:
+ stegno(character);
+ break;
- pkt_t pkt=din.read();
+ case 1:
+ stegnoDecrypt();
+ break;
+
+ default:
+ break;
+ }
- if(count_streams > 3 * (position - 1) && count_streams < 3 * (position2)){
- addNum=charIn%10;
- charIn=(int)charIn/10;
- pkt.data=convertBinInt((convert(pkt.data)/10)*10+addNum);
-
- }
-
count_streams++;
if (count_streams == w*h*3){
@@ -57,6 +67,36 @@ void pixel(
}
+void stegno(char c){
+
+
+ charIn=toAscii(character);
+ if(count_streams > 3 * (position - 1) && count_streams < 3 * (position2)){
+ addNum=charIn%10;
+ charIn=(int)charIn/10;
+ pkt.data=convertBinInt((convert(pkt.data)/10)*10+addNum);
+
+ }
+
+}
+
+char stegnoDcrypt(int data){
+
+
+ //int arr[8]={255,254,253,252,251,250,249,248};
+
+ decrpyt=convert(data)%10;
+ printf("%d\n",decrpyt);
+
+ asciiNum=asciiNum*10+decrpyt;
+
+ asciiVal= convertBinInt(asciiNum);
+ printf("%d\n",asciiVal);
+ return (char)asciiVal;
+
+}
+
+
long long convert(int n) {
long long bin = 0;
int rem, i = 1, step = 1;
--
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