From a6df67e8bcd5159cde27556f4f6a315f8dc2215f Mon Sep 17 00:00:00 2001
From: shamikam
Date: Mon, 16 Jan 2017 02:56:17 +0530
Subject: First Commit

---
 sci_gateway/cpp/opencv_demosaic.cpp | 127 ++++++++++++++++++++++++++++++++++++
 1 file changed, 127 insertions(+)
 create mode 100644 sci_gateway/cpp/opencv_demosaic.cpp

(limited to 'sci_gateway/cpp/opencv_demosaic.cpp')

diff --git a/sci_gateway/cpp/opencv_demosaic.cpp b/sci_gateway/cpp/opencv_demosaic.cpp
new file mode 100644
index 0000000..317e163
--- /dev/null
+++ b/sci_gateway/cpp/opencv_demosaic.cpp
@@ -0,0 +1,127 @@
+/********************************************************
+    Author: V Srinivas
+*********************************************************
+  void cvtColor(InputArray src, int code, int dstCn=0 )
+********************************************************/
+//Demosaicing using cvt color filter
+
+#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 "sciprint.h"
+  #include "BOOL.h"
+  #include <localization.h>
+  #include "../common.h"
+  
+  int opencv_demosaic(char *fname, unsigned long fname_len)
+  {
+
+    SciErr sciErr;
+    int intErr;
+    int iRows=0,iCols=0;
+    int *piAddr2  = NULL;
+    int *piAddr3  = NULL;
+    int *piAddr4  = NULL;
+    int *piLen = NULL;
+    double dstCn;
+    int code; 
+    char **codeString = NULL;
+    int i, j, k;
+
+    //checking input argument
+    CheckInputArgument(pvApiCtx, 2,2);
+    CheckOutputArgument(pvApiCtx, 1,1) ;
+
+
+     Mat src;
+     retrieveImage(src,1);
+
+    sciErr = getVarAddressFromPosition(pvApiCtx, 2, &piAddr2);
+    if (sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return -1;
+    }
+
+     //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, piAddr2, &iRows, &iCols, NULL, NULL);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return -1;
+    }
+    piLen = (int*)malloc(sizeof(int) * iRows * iCols);
+    //second call to retrieve length of each string
+    sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen, NULL);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return -1;
+    }
+
+    codeString = (char**)malloc(sizeof(char*) * iRows * iCols);
+    for(i = 0 ; i < iRows * iCols ; i++)
+        codeString[i] = (char*)malloc(sizeof(char) * (piLen[i] + 1));//+ 1 for null termination
+
+    //third call to retrieve data
+    sciErr = getMatrixOfString(pvApiCtx, piAddr2, &iRows, &iCols, piLen, codeString);
+    if(sciErr.iErr)
+    {
+        printError(&sciErr, 0);
+        return 0;
+    }
+
+    
+
+     Mat dst;
+     
+    if(strcmp(codeString[0], "gbrg") == 0)
+              code = CV_BayerGR2RGB;
+    else if(strcmp(codeString[0], "bggr") == 0)
+              code = CV_BayerRG2RGB;
+    else if(strcmp(codeString[0], "rggb") == 0)
+              code = CV_BayerBG2RGB;        
+    else if(strcmp(codeString[0], "grbg") == 0)
+              code = CV_BayerGB2RGB;
+    else{
+
+        sciprint("Invalid Bayer filter code");
+        return 0;
+    }
+    
+    cvtColor(src, dst, CV_BayerRG2RGB, 0);
+
+    // namedWindow ("window", 1);
+    // imshow("window", dst);
+    // waitKey(0);
+    //  destroyWindow("window");
+
+
+    string tempstring = type2str(dst.type());
+    char *checker;
+    checker = (char *)malloc(tempstring.size() + 1);
+    memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
+    returnImage(checker,dst,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;
+}
+/* ==================================================================== */
+}
-- 
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