1 files changed, 55 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_fftshift.cpp b/sci_gateway/cpp/opencv_fftshift.cpp
new file mode 100644
index 0000000..4f59bd4
--- /dev/null
+++ b/sci_gateway/cpp/opencv_fftshift.cpp
@@ -0,0 +1,55 @@
+/********************************************************
+Function   :fftshift
+Syntax     :B=fftshift(A)
+Author     : Tess  Zacharias
+********************************************************/
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+#include "string.h"
+using namespace cv;
+using namespace std;
+extern "C"
+{
+  #include "api_scilab.h"
+  #include "Scierror.h"
+  #include "BOOL.h"
+  #include <localization.h>
+  #include "sciprint.h"
+  #include "../common.h"
+  int opencv_fftshift(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    Mat image;
+    CheckInputArgument(pvApiCtx, 1, 1);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+    retrieveImage(image,1);
+    int cx = floor(image.cols/2);
+    int cy = floor(image.rows/2);
+    Mat q0(image, Rect(0, 0, cx, cy));   // Top-Left - Create a ROI per quadrant
+    Mat q1(image, Rect(cx, 0, cx, cy));  // Top-Right
+    Mat q2(image, Rect(0, cy, cx, cy));  // Bottom-Left
+    Mat q3(image, Rect(cx, cy, cx, cy)); // Bottom-Right
+    Mat tmp;                             // swap quadrants (Top-Left with Bottom-Right)
+    q0.copyTo(tmp);
+    q3.copyTo(q0);
+    tmp.copyTo(q3);
+    q1.copyTo(tmp);                    // swap quadrant (Top-Right with Bottom-Left)
+    q2.copyTo(q1);
+    tmp.copyTo(q2);   
+    int temp = nbInputArgument(pvApiCtx) + 1;
+    string tempstring = type2str(image.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,image,1);
+    free(checker); 
+    AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+    ReturnArguments(pvApiCtx);
+    return 0;
+  }
+}