/* get delta at specific offset */
pts_t getDelta(off_t offset);
- /* fixup timestamp near offset */
- pts_t fixuppts_t(off_t offset, pts_t ts);
+ /* fixup timestamp near offset, i.e. convert to zero-based */
+ int fixupPTS(const off_t &offset, pts_t &ts);
+
+ /* get PTS before offset */
+ int getPTS(off_t &offset, pts_t &pts);
/* inter/extrapolate timestamp from offset */
pts_t getInterpolated(off_t offset);
off_t getAccessPoint(pts_t ts);
+ int getNextAccessPoint(pts_t &ts, const pts_t &start, int direction);
+
bool empty();
};