+uint8_t* Segment::get_iterator_value(SegmentDataIterator* it)
+{
+ assert(it->sample_index <= (sample_count_ - 1));
+
+ return (it->chunk + it->chunk_offs);
+}
+
+uint64_t Segment::get_iterator_valid_length(SegmentDataIterator* it)
+{
+ assert(it->sample_index <= (sample_count_ - 1));
+
+ return ((chunk_size_ - it->chunk_offs) / unit_size_);
+}
+