1 files changed, 142 insertions, 0 deletions
diff --git a/sci_gateway/cpp/opencv_getgaussiankernel.cpp b/sci_gateway/cpp/opencv_getgaussiankernel.cpp
new file mode 100644
index 0000000..99c6d7d
--- /dev/null
+++ b/sci_gateway/cpp/opencv_getgaussiankernel.cpp
@@ -0,0 +1,142 @@
+/********************************************************
+    Author: Shubheksha Jalan
+*********************************************************
+Mat getGaussianKernel(int ksize, double sigma, int ktype=CV_64F )
+********************************************************/
+
+
+#include <numeric>
+#include "opencv2/core/core.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/opencv.hpp"
+#include <iostream>
+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_getgaussiankernel(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int intErr=0;
+    int iRows=0,iCols=0;
+    int *piLen = NULL;
+    int *piAddr = NULL;
+    int *piAddrNew = NULL;
+    int *piAddr2  = NULL;
+    int *piAddr3  = NULL;
+    double ksize, sigma;
+    char **kType = NULL;
+    int i, j, k;
+
+      //checking input argument
+    CheckInputArgument(pvApiCtx, 3, 3);
+    CheckOutputArgument(pvApiCtx, 1, 1) ;
+
+
+
+    //for value of ksize
+    sciErr = getVarAddressFromPosition(pvApiCtx, 1, &piAddr);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+     intErr = getScalarDouble(pvApiCtx, piAddr, &ksize);
+    if(intErr || ksize < 0 || (int) ksize % 2 == 0)
+    {
+        return intErr;
+    }   
+
+
+    //for first value of size
+    sciErr = getVarAddressFromPosition(pvApiCtx,2,&piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+     intErr = getScalarDouble(pvApiCtx, piAddr2, &sigma);
+     if(intErr)
+    {
+        return intErr;
+    }   
+
+    sciErr = getVarAddressFromPosition(pvApiCtx, 3, &piAddr3);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+      //Now, we will retrieve the string from the input parameter. For this, we will require 3 calls
+    //first call to retrieve dimensions
+    sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, NULL, NULL);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+    piLen = (int*)malloc(sizeof(int) * iRows * iCols);
+    //second call to retrieve length of each string
+    sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen, NULL);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+    kType = (char**)malloc(sizeof(char*) * iRows * iCols);
+    for(i = 0 ; i < iRows * iCols ; i++)
+        kType[i] = (char*)malloc(sizeof(char) * (piLen[i] + 1));//+ 1 for null termination
+
+    //third call to retrieve data
+    sciErr = getMatrixOfString(pvApiCtx, piAddr3, &iRows, &iCols, piLen, kType);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+
+    Mat temp;
+
+    if(strcmp(kType[0], "CV_32F") == 0)
+    	temp = getGaussianKernel(ksize, sigma, CV_32F
+            );
+    else if(strcmp(kType[0], "CV_64F") == 0)
+    	temp = getGaussianKernel(ksize, sigma, CV_64F);
+
+     double *m = (double *)malloc(temp.rows*temp.cols*sizeof(double));
+    for(i=0;i<temp.rows;i++)
+    {
+      for(j=0;j<temp.cols;j++)
+      {
+        uchar intensity = temp.at<uchar>(i, j);
+        *(m + i*temp.cols + j) = intensity;
+      }
+    }
+
+    sciErr = createMatrixOfDouble(pvApiCtx, nbInputArgument(pvApiCtx) + 1, temp.rows, temp.cols, m);
+
+	//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;
+
+  }
+/* ==================================================================== */
+}
+
+
+
+
+