Photoshop OR Real

// By Kevin
// Old version of photoshop or real detection, might require tweaking of the sensitivity value marked by a comment bellow
// requires SDL and SDL_image to compile

#include "defines.h"
#include <SDL/SDL.h>
#include <SDL/SDL_image.h>

int main(int argc, char *argv[])
{
    if ( argc < 1 )
    {
        printf("USAGE: %s [image file to check]\n",argv[0]);
        return(1);
    }else{
        find(argc,argv);
        return(0);
    }
}

int find(int argc, char *files[])
{
    FILE *output;
    SDL_Surface *surface;
    unsigned long filesize=0;
    unsigned long pixel_count=0;
    int start=0;
    int d,i,l;
    int inbyte=0;
    Uint8 *pixel;
    int temp=0;
    long pos=0;
    int count=0;
    int count2=0;

    surface=IMG_Load(files[1]);
    pixel_count=(surface->w*surface->h)*3;
    pixel=(Uint8 *)surface->pixels;

    if( SDL_MUSTLOCK( surface ) )
    { //Lock the surface
        SDL_LockSurface( surface );
    }

    for(l=0;l<pixel_count-64;l=l+4)
    {

        for(i=0; i < 3; i++)
        {
            inbyte=0;
            inbyte=pixel[l+i]%2;
            printf("%d ",pixel[l+i]);
            if ( ( inbyte != 254 ) && ( inbyte != 0 ) )
            {
                if ( inbyte == pixel[l+i+3]%2 )
                {
                    count++;

                }
            }


        }

        if ( count == 3 )
        {
            count2++;
        }else{
            count2=0;
        }


        if ( count2 > 4 ) // Adjust the 4 to change sensitivity
        {
            printf("Photoshopped");

            if( SDL_MUSTLOCK( surface ) )
            { //Lock the surface
                SDL_UnlockSurface( surface );
            }

            SDL_FreeSurface(surface);
            exit(-1);
        }

        printf("\n");
        count=0;


        pos++;
    }


    if( SDL_MUSTLOCK( surface ) )
    { //Lock the surface
        SDL_UnlockSurface( surface );
    }

    SDL_FreeSurface(surface);

    printf("Real");
    return(0);
}