/**
 * Basic test for gdImageConvolution() and related functions
 */


#include "gd.h"
#include "gdtest.h"


static void test_convolution(void (*convolution_func)(gdImagePtr im), const char *expected)
{
    gdImagePtr im;
    FILE *fp;
    char *path;

    fp = gdTestFileOpen2("gdimageconvolution", "basic.png");
    im = gdImageCreateFromPng(fp);
    fclose(fp);

    convolution_func(im);

    path = gdTestFilePath2("gdimageconvolution", expected);
    gdAssertImageEqualsToFile(path, im);
    gdFree(path);

    gdImageDestroy(im);
}


static void test_edge_detect_quick(gdImagePtr im)
{
    gdImageEdgeDetectQuick(im);
}


static void test_smooth(gdImagePtr im)
{
    gdImageSmooth(im, 5);
}


static void test_emboss(gdImagePtr im)
{
    gdImageEmboss(im);
}


static void test_mean_removal(gdImagePtr im)
{
    gdImageMeanRemoval(im);
}


int main()
{
    test_convolution(&test_edge_detect_quick, "basic_edge_detect_quick.png");
    test_convolution(&test_smooth, "basic_smooth.png");
    test_convolution(&test_emboss, "basic_emboss.png");
    test_convolution(&test_mean_removal, "basic_mean_removal.png");

    return gdNumFailures();
}