Bool gf_filter_is_alias(GF_Filter *filter)
{
	if (filter && filter->multi_sink_target) return GF_TRUE;
	return GF_FALSE;
}
Bool gf_filter_is_alias(GF_Filter *filter)
{
	if (filter && filter->multi_sink_target) return GF_TRUE;
	return GF_FALSE;
}