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/********************************************************
Author: Deepshikha
return_image = DCT(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_DCT(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, "Input should be single channel\n");
return 0;
}
/// even sized rows and columns required
if(image.rows%2 != 0){
Scierror(999, "%s: Odd number of rows found\n");
return 0;
}
if(image.cols%2 != 0){
Scierror(999, "%s: Odd number of columns found\n");
return 0;
}
/// transformed_idct stores the transformed image
Mat new_image(image.rows, image.cols, image.type());
dct(image, new_image, flags);
string tempstring = type2str(new_image.type());
char *checker;
checker = (char *)malloc(tempstring.size() + 1);
memcpy(checker, tempstring.c_str(), tempstring.size() + 1);
returnImage(checker, new_image, 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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