int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream,
uint64_t *timestamp_begin);
int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream,
int ustctl_get_timestamp_begin(struct ustctl_consumer_stream *stream,
uint64_t *timestamp_begin);
int ustctl_get_timestamp_end(struct ustctl_consumer_stream *stream,