Function loopirev

source/src/main.cpp:412–416

        int crop_w = height ? ((dst_w - img_w) / 2) * 3 : 0;
        int crop_h = height ? (dst_h - img_h) / 2 : 0;
        loopirev(img_h)
        { // flip image
            memcpy(dst, &tmpdst[tmpdstpitch * (i + crop_h) + crop_w], image->pitch);
            dst += image->pitch;
        }
    }
    entropy_add_block(tmpdst, tmpdstsize);
    delete[] tmpdst;