extern int SDL_imageFilterConvolveKernel9x9Divide(unsigned char *Src,
 unsigned char *Dest, int rows, int columns,
                             signed short *Kernel, unsigned char Divisor);
int main() {
        int a=SDL_imageFilterConvolveKernel9x9Divide("a","b", 2, 3,
                             1, 3);
        return 0;
}