static int mjpeg_decode_dri(MJpegDecodeContext *s, UINT8 *buf, int buf_size)
static int mjpeg_decode_dri(MJpegDecodeContext *s)
static int mjpeg_decode_dri(MJpegDecodeContext *s,                             UINT8 *buf, int buf_size){    init_get_bits(&s->gb, buf, buf_size);    if (get_bits(&s->gb, 16) != 4)	return -1;    s->restart_interval = get_bits(&s->gb, 16);    dprintf("restart interval: %d\n", s->restart_interval);    return 0;}