ssize_t offset; /* offset from base, in bits. EOF for end of file. */
ssize_t last_offset; /* offset before the last read_event */
size_t cur_index; /* current index in packet index */
+ uint64_t last_events_discarded; /* last known amount of event discarded */
void (*packet_seek)(struct stream_pos *pos, size_t index,
int whence); /* function called to switch packet */