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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 "@(#) time_comp.c 1.19 05/08/19 SwRI" #include "libbase_idfs.h" #include "libVIDF.h" /* for header format comparison */ /******************************************************************************* * * * IR_GET_TIME_COMPONENTS SUBROUTINE * * * * DESCRIPTION * * This routine is called in order to get the individual time elements that * * are used to determine the time associated with a given sample. * * * * INPUT VARIABLES * * None * * * * USAGE * * ir_get_time_components () * * * * NECESSARY SUBPROGRAMS * * ir_instrument_timing () returns the time elements in milliseconds and * * nanoseconds components * * * * 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_ULONG num_items the number of samples returned for each sensor* * SDDAS_SHORT n_sen the number of sensors returned in the current * * record * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void ir_get_time_components (void) { extern struct general_info ginfo; struct experiment_info *ex; struct ptr_rec *ptr; SDDAS_ULONG num_items; 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 and point */ /* to the sensor structure for the sensor of interest. */ /****************************************************************************/ ex = ginfo.expt; ptr = ex->info_ptr; n_sen = *ptr->N_SEN; /************************************************************************/ /* Retrieve the individual timing components in milliseconds and */ /* nanosecond residual. */ /************************************************************************/ ir_instrument_timing (*ptr->DATA_ACCUM, *ptr->TIME_UNITS, &ex->accum_ms, &ex->accum_ns); ir_instrument_timing (*ptr->DATA_LAT, ex->data_lat_units, &ex->lat_ms, &ex->lat_ns); ir_instrument_timing (*ptr->SWP_RESET, ex->swp_reset_units, &ex->swp_ms, &ex->swp_ns); ir_instrument_timing (*ptr->SEN_RESET, ex->sen_reset_units, &ex->sen_ms, &ex->sen_ns); /*************************************************************************/ /* Determine the time between acquisition of 2 consecutive data samples.*/ /*************************************************************************/ ex->time_sm_ms = ex->accum_ms + ex->lat_ms; ex->time_sm_ns = ex->accum_ns + ex->lat_ns; /****************************************************************************/ /* Determine the time between adjacent data samples within the same column.*/ /****************************************************************************/ ex->time_col_ms = ex->TCP * (ex->TRC * ex->time_sm_ms + (1 - ex->TRC) * ((n_sen * ex->TRP + (1 - ex->TRP)) * ex->time_sm_ms + ex->swp_ms)); ex->time_col_ns = ex->TCP * (ex->TRC * ex->time_sm_ns + (1 - ex->TRC) * ((n_sen * ex->TRP + (1 - ex->TRP)) * ex->time_sm_ns + ex->swp_ns)); /****************************************************************************/ /* Determine the time between adjacent data samples within the same row. */ /****************************************************************************/ if (ex->header_format == ORIGINAL_HEADER) num_items = *ptr->hdr_fmt1_ptr->N_SAMPLE; else num_items = ptr->hdr_fmt2_ptr->TENSOR_ELEMENTS; ex->time_row_ms = ex->TRP * ((1 - ex->TRC) * ex->time_sm_ms + ex->TRC * ((num_items * ex->TCP + (1 - ex->TCP)) * ex->time_sm_ms + ex->swp_ms)); ex->time_row_ns = ex->TRP * ((1 - ex->TRC) * ex->time_sm_ns + ex->TRC * ((num_items * ex->TCP + (1 - ex->TCP)) * ex->time_sm_ns + ex->swp_ns)); }