fprintf(stderr,"H.263+ UMV Motion = %d\n", code);
av_log( s->avctx, AV_LOG_DEBUG,"H.263+ UMV Motion = %d\n", code);
static int h263p_decode_umotion(MpegEncContext * s, int pred){   int code = 0, sign;      if (get_bits1(&s->gb)) /* Motion difference = 0 */      return pred;      code = 2 + get_bits1(&s->gb);      while (get_bits1(&s->gb))   {      code <<= 1;      code += get_bits1(&s->gb);   }   sign = code & 1;   code >>= 1;      code = (sign) ? (pred - code) : (pred + code);#ifdef DEBUG   fprintf(stderr,"H.263+ UMV Motion = %d\n", code);#endif   return code;   }