for(x=0;x<data->get_image_width();x++)	{
		for(y=0;y<data->get_image_height();y++) {
			
			rp = r;
			r = data->get_pixel(x,y,RED);

			if(rp == r && rn < 255) { //if we find another pixel the same colour, increment the counter
				rn++;
			}


			else { //reset the counter and write the previous series
			
				compressed[byte_ptr] = (char)rn & 0xff;
				byte_ptr++;
				compressed[byte_ptr] = (char)rp & 0xff;
				byte_ptr++;


				rt += rn;
				rn = 1;
			}
		}
	}