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/*
* precise timer routines for Windows
*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <windows.h>
#include <sys/time.h>
#include <mmsystem.h>
#include <stdlib.h>
#include "timer.h"
void mp_sleep_us(int64_t us)
{
if (us < 0)
return;
// Sleep(0) won't sleep for one clocktick as the unix usleep
// instead it will only make the thread ready
// it may take some time until it actually starts to run again
if (us < 1000)
us = 1000;
Sleep(us / 1000);
}
uint64_t mp_raw_time_us(void)
{
struct timeval tv;
gettimeofday(&tv,NULL);
return tv.tv_sec * 1000000LL + tv.tv_usec;
}
static void restore_timer(void)
{
// The MSDN documents that begin/end "must" be matched. This satisfies
// this requirement.
timeEndPeriod(1);
}
void mp_raw_time_init(void)
{
timeBeginPeriod(1); // request 1ms timer resolution
atexit(restore_timer);
}
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