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/******************************************************************************#
# guvcview http://guvcview.sourceforge.net #
# #
# Paulo Assis <pj.assis@gmail.com> #
# #
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
# #
*******************************************************************************/
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include "core_time.h"
#include "gview.h"
/*
* monotonic time in nanoseconds
* args:
* none
*
* asserts:
* none
*
* returns: monotonic time in nanoseconds
*/
uint64_t ns_time_monotonic() {
struct timespec now;
if (clock_gettime(CLOCK_MONOTONIC, &now) != 0) {
fprintf(stderr, "V4L2_CORE: ns_time_monotonic (clock_gettime) error: %s\n",
strerror(errno));
return 0;
}
return ((uint64_t)now.tv_sec * NSEC_PER_SEC + (uint64_t)now.tv_nsec);
}
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