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mpv/osdep/timer.h
wm4 f47a4fc3d9 threads: use mpv time for mpthread_cond_timedwait wrapper
Use the time as returned by mp_time_us() for mpthread_cond_timedwait(),
instead of calculating the struct timespec value based on a timeout.
This (probably) makes it easier to wait for a specific deadline.
2014-05-18 19:20:32 +02:00

55 lines
2.0 KiB
C

/*
* 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.
*/
#ifndef MPLAYER_TIMER_H
#define MPLAYER_TIMER_H
#include <inttypes.h>
// Initialize timer, must be called at least once at start.
void mp_time_init(void);
// Return time in microseconds. Never wraps. Never returns 0 or negative values.
int64_t mp_time_us(void);
// Return time in seconds. Can have down to 1 microsecond resolution, but will
// be much worse when casted to float.
double mp_time_sec(void);
// Provided by OS specific functions (timer-linux.c)
void mp_raw_time_init(void);
uint64_t mp_raw_time_us(void);
// Sleep in microseconds.
void mp_sleep_us(int64_t us);
// Return the amount of time that has passed since the last call, in
// microseconds. *t is used to calculate the time that has passed by storing
// the current time in it. If *t is 0, the call will return 0. (So that the
// first call will return 0, instead of the absolute current time.)
int64_t mp_time_relative_us(int64_t *t);
// Add a time in seconds to the given time in microseconds, and return it.
// Takes care of possible overflows. Never returns a negative or 0 time.
int64_t mp_add_timeout(int64_t time_us, double timeout_sec);
// Convert the mp time in microseconds to a timespec using CLOCK_REALTIME.
struct timespec mp_time_us_to_timespec(int64_t time_us);
#endif /* MPLAYER_TIMER_H */