1 files changed, 72 insertions, 0 deletions
diff --git a/sci_gateway1/cpp/opencv_IDCT.cpp b/sci_gateway1/cpp/opencv_IDCT.cpp
new file mode 100644
index 0000000..a690982
--- /dev/null
+++ b/sci_gateway1/cpp/opencv_IDCT.cpp
@@ -0,0 +1,72 @@
+/********************************************************
+Author: Suraj Prakash 
+return_image = IDCT(source_image)
+********************************************************/
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+#include <vector>
+
+using namespace cv;
+using namespace std;
+
+extern "C"{
+  #include "api_scilab.h"
+  #include "Scierror.h"
+  #include "BOOL.h"
+  #include <localization.h>
+  #include "../common.h"
+  
+  int opencv_IDCT(char *fname, unsigned long fname_len){
+
+    /// Error management variable
+    SciErr sciErr;
+    
+    /// Variables
+    int i, j;
+
+    int flags = 0;
+
+    /// checking input argument
+    CheckInputArgument(pvApiCtx, 1, 1);
+    CheckOutputArgument(pvApiCtx, 1, 1);
+
+
+    Mat image;
+    retrieveImage(image, 1);
+    
+    if(image.channels() != 1){
+    	Scierror(999, "%s: Image should be single channel\n");
+    	return 0;
+    }
+    /// even sized rows and columns required
+    if(image.rows%2 != 0 or image.cols%2 != 0){
+      Scierror(999, "%s: Either of rows size or column size is odd\n");
+      return 0;
+    }
+    
+    /// transformed_idct stores the transformed image
+    Mat transformed_idct(image.rows, image.cols, image.type());
+    idct(image, transformed_idct, flags);
+
+    string tempstring = type2str(transformed_idct.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker, transformed_idct, 1);
+    free(checker);
+
+    //Assigning the list as the Output Variable
+    AssignOutputVariable(pvApiCtx, 1) = nbInputArgument(pvApiCtx) + 1;
+
+    //Returning the Output Variables as arguments to the Scilab environment
+    ReturnArguments(pvApiCtx);
+    return 0;
+
+  }
+/* ==================================================================== */
+}
+