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SwRI can revise these Terms at any time * without notice by updating this posting. * * Trademarks * * The SwRI logo is a trademark of SwRI in the United States and other countries. * */ #ident "@(#) sen_set_time.c 1.12 05/08/19 SwRI" #include "libbase_idfs.h" #include "libVIDF.h" /* for header format comparison */ /******************************************************************************* * * * IR_SENSOR_SET_TIME SUBROUTINE * * * * DESCRIPTION * * This routine returns the beginning and ending time of the current sensor * * set. The time is returned in two parts, the time in milliseconds and for * * finer resolution, the number of nanoseconds left over after the time in * * milliseconds has been determined. The algorithm used to determine the * * time is taken directly from the VIDF definition document. * * * * INPUT VARIABLES * * SDDAS_LONG *btime_ms start time (msec) of the sensor set * * SDDAS_LONG *btime_ns start time (nanoseconds) of the sensor set * * SDDAS_LONG *etime_ms end time (msec) of the sensor set * * SDDAS_LONG *etime_ns end time (nanoseconds) of the sensor set * * * * USAGE * * ir_sensor_set_time (&btime_ms, &btime_ns, &etime_ms, &etime_ns) * * * * NECESSARY SUBPROGRAMS * * None * * * * EXTERNAL VARIABLES * * struct general_info structure that holds information concerning * * ginfo the experiment that is being processed * * * * INTERNAL VARIABLES * * struct experiment_info a pointer to the structure that holds * * *ex specific experiment information * * struct ptr_rec *ptr a pointer to the structure which holds all * * pointers to the header and data for the * * experiment of interest * * SDDAS_LONG dr_time_ns nanosecond time adjustment to dr_time in * * the data record * * SDDAS_USHORT n_sample the number of samples returned for each sensor* * SDDAS_SHORT n_sen the number of sensors * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void ir_sensor_set_time (SDDAS_LONG *btime_ms, SDDAS_LONG *btime_ns, SDDAS_LONG *etime_ms, SDDAS_LONG *etime_ns) { extern struct general_info ginfo; struct experiment_info *ex; struct ptr_rec *ptr; SDDAS_LONG dr_time_ns; SDDAS_USHORT n_sample; SDDAS_SHORT n_sen; /****************************************************************************/ /* Set a pointer to the structure which holds all pointers for header and */ /* data information for the experiment currently being processed. */ /****************************************************************************/ ex = ginfo.expt; ptr = ex->info_ptr; n_sen = *ptr->N_SEN - 1; dr_time_ns = (ex->nano_defined) ? *ptr->NANO_RES : 0; /***************************************************************************/ /* CARRIE - For now, since force parallel settings, does not matter what */ /* n_sample is set to since TCP and TRP will be zero. */ /***************************************************************************/ if (ex->header_format == ORIGINAL_HEADER) n_sample = (ex->smp_id == 2 && ex->max_packing == 1) ? 1 : *ptr->hdr_fmt1_ptr->N_SAMPLE - 1; else n_sample = 1; /***************************************************************************/ /* Determine the beginning time of the current sensor set. PTR->TIME is */ /* not added to the nanoseconds element since it is returned in msec, */ /* but if a nanosecond time adjustment factor was defined, include it. */ /***************************************************************************/ *btime_ms = *ptr->TIME + ex->accum_ss_ms; *btime_ns = dr_time_ns + ex->accum_ss_ns; /***************************************************************************/ /* If the nanosecond time element can be converted into milliseconds, do */ /* so and add this to the millisecond time element and keep the leftover */ /* nanoseconds. 1000000 nanoseconds = 1 millisecond. */ /***************************************************************************/ *btime_ms += *btime_ns / 1000000; *btime_ns = *btime_ns % 1000000; /***************************************************************************/ /* Determine the ending time for the current sensor set. */ /***************************************************************************/ *etime_ms = *btime_ms + n_sen * ex->time_row_ms + n_sample * ex->time_col_ms + ex->time_sm_ms + ex->swp_ms + ex->sen_ms; *etime_ns = *btime_ns + n_sen * ex->time_row_ns + n_sample * ex->time_col_ns + ex->time_sm_ns + ex->swp_ns + ex->sen_ns; /***************************************************************************/ /* If the nanosecond time element can be converted into milliseconds, do */ /* so and add this to the millisecond time element and keep the leftover */ /* nanoseconds. 1000000 nanoseconds = 1 millisecond. */ /***************************************************************************/ *etime_ms += *etime_ns / 1000000; *etime_ns = *etime_ns % 1000000; }