Jon Lund Steffensen
52a5a370fd
w32gdi.c: Implements gamma ramp method for Windows GDI API. Use double as a cross platform time representation. Add WinGDI as a selectable method (currently limitied to minimum 4500K). Fix a bug where redshift would crash if RANDR failed and VidMode wasn't compiled in.
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/* systemtime.c -- Portable system time source
|
|
This file is part of Redshift.
|
|
|
|
Redshift 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
Redshift 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 Redshift. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Copyright (c) 2010 Jon Lund Steffensen <jonlst@gmail.com>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
|
|
#ifndef _WIN32
|
|
# include <time.h>
|
|
#endif
|
|
|
|
#include "systemtime.h"
|
|
|
|
int
|
|
systemtime_get_time(double *t)
|
|
{
|
|
#ifndef _WIN32
|
|
struct timespec now;
|
|
int r = clock_gettime(CLOCK_REALTIME, &now);
|
|
if (r < 0) {
|
|
perror("clock_gettime");
|
|
return -1;
|
|
}
|
|
|
|
*t = now.tv_sec + (now.tv_nsec / 1000000000.0);
|
|
#else /* _WIN32 */
|
|
FILETIME now;
|
|
ULARGE_INTEGER i;
|
|
GetSystemTimeAsFileTime(&now);
|
|
i.LowPart = now.dwLowDateTime;
|
|
i.HighPart = now.dwHighDateTime;
|
|
|
|
/* FILETIME is tenths of microseconds since 1601-01-01 UTC */
|
|
*t = (i.QuadPart / 10000000.0) - 11644473600.0;
|
|
#endif /* _WIN32 */
|
|
|
|
return 0;
|
|
}
|