/* * Copyright (C) 1998 by Southwest Research Institute (SwRI) * * All rights reserved under U.S. Copyright Law and International Conventions. * * The development of this Software was supported by contracts NAG5-3148, * NAG5-6855, NAS8-36840, NAG5-2323, and NAG5-7043 issued on behalf of * the United States Government by its National Aeronautics and Space * Administration. Southwest Research Institute grants to the Government, * and others acting on its behalf, a paid-up nonexclusive, irrevocable, * worldwide license to reproduce, prepare derivative works, and perform * publicly and display publicly, by or on behalf of the Government. * Other than those rights granted to the United States Government, no part * of this Software may be reproduced in any form or by any means, electronic * or mechanical, including photocopying, without permission in writing from * Southwest Research Institute. 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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 "@(#) set_time_str.c 1.6 05/08/19 SwRI" #include "gen_defs.h" #include "libtrec_idfs.h" /******************************************************************************* * * * IR_SET_TIMING_STRUCTURE SUBROUTINE * * * * DESCRIPTION * * This routine is called to initialize timing information that is needed * * to place the data into appropriate buffers by FILL_DATA(). This is done * * only if file_pos() successfully allocated the structure. * * * * INPUT VARIABLES * * struct experiment_info *ex a pointer to the structure that holds * * specific experiment information * * SDDAS_SHORT base_year the base year time component * * SDDAS_SHORT base_day the base day time component * * SDDAS_LONG base_sec the base seconds time component * * SDDAS_LONG base_nano the base nanoseconds time component * * SDDAS_LONG base_pix the pixel location associated with the base * * time * * SDDAS_LONG res_sec the time per pixel seconds component * * SDDAS_LONG res_nano the time per pixel nanoseconds component * * * * USAGE * * ir_set_timing_structure (ex, base_year, base_day, base_sec, base_nano, * * base_pix, res_sec, res_nano) * * * * NECESSARY SUBPROGRAMS * * None * * * * EXTERNAL VARIABLES * * None * * * * INTERNAL VARIABLES * * reg struct timing *tptr a pointer to the structure that holds timing* * information * * reg struct timing *stop_tptr loop termination variable * * reg SDDAS_SHORT num_struct number of timing structures * * SDDAS_SHORT days_in_yr the number of days in the year * * * * SUBSYSTEM * * Display Level * * * ******************************************************************************/ void ir_set_timing_structure (struct experiment_info *ex, SDDAS_SHORT base_year, SDDAS_SHORT base_day, SDDAS_LONG base_sec, SDDAS_LONG base_nano, SDDAS_LONG base_pix, SDDAS_LONG res_sec, SDDAS_LONG res_nano) { register struct timing *tptr, *stop_tptr; register SDDAS_SHORT num_struct; SDDAS_SHORT days_in_yr; /*******************************************************************/ /* If FILE_POS() was not successful yet, no structure allocated. */ /*******************************************************************/ if (ex->timing_ptr != NO_MEMORY) { num_struct = (ex->all_or_one) ? ex->num_sensor : 1; tptr = ex->timing_ptr; stop_tptr = ex->timing_ptr + num_struct; for (; tptr < stop_tptr; ++tptr) { tptr->pix_num = base_pix; tptr->start_sec = base_sec; tptr->start_nano = base_nano; tptr->start_yr = base_year; tptr->start_day = base_day; tptr->end_sec = base_sec + res_sec; tptr->end_nano = base_nano + res_nano; tptr->end_yr = base_year; tptr->end_day = base_day; if (tptr->end_nano >= 1000000000) { ++tptr->end_sec; tptr->end_nano -= 1000000000; } tptr->end_day += tptr->end_sec / 86400; tptr->end_sec = tptr->end_sec % 86400; if ((tptr->end_yr % 4 == 0 && tptr->end_yr % 100 != 0) || tptr->end_yr % 400 == 0) days_in_yr = 366; else days_in_yr = 365; if (tptr->end_day > days_in_yr) { tptr->end_yr += tptr->end_day / days_in_yr; tptr->end_day = tptr->end_day % days_in_yr; } } } }