GST_NSECOND       190 gst/gstclock.h #define GST_TIMESPEC_TO_TIME(ts)	(GstClockTime)((ts).tv_sec * GST_SECOND + (ts).tv_nsec * GST_NSECOND)
GST_NSECOND       201 gst/gstclock.h   (ts).tv_nsec = ((t) - (ts).tv_sec * GST_SECOND) / GST_NSECOND;	\