*qpel=*gmc=*vop_packed=0;
int av_is_voppacked(AVCodecContext *avctx, int *vop_packed, int *gmc, int *qpel){    MpegEncContext *s = avctx->priv_data;    if(avctx->codec->id!=CODEC_ID_MPEG4) return 0;    	*qpel=*gmc=*vop_packed=0;  	*vop_packed=(s->divx_packed);	*qpel=s->quarter_sample;	*gmc=0;	// FIXME	return 1;  }