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🎥 Command line media player
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869/* * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include <stdlib.h>#include <time.h>#include <limits.h>#include <assert.h>
#include "common/common.h"#include "common/msg.h"#include "threads.h"#include "timer.h"
static uint64_t raw_time_offset;static mp_once timer_init_once = MP_STATIC_ONCE_INITIALIZER;
static void do_timer_init(void){ mp_raw_time_init(); raw_time_offset = mp_raw_time_ns(); mp_assert(raw_time_offset > 0);}
void mp_time_init(void){ mp_exec_once(&timer_init_once, do_timer_init);}
int64_t mp_time_ns(void){ return mp_time_ns_from_raw_time(mp_raw_time_ns());}
int64_t mp_time_ns_from_raw_time(uint64_t raw_time){ return raw_time - raw_time_offset;}
double mp_time_sec(void){ return mp_time_ns() / 1e9;}
int64_t mp_time_ns_add(int64_t time_ns, double timeout_sec){ mp_assert(time_ns > 0); // mp_time_ns() returns strictly positive values double t = MPCLAMP(timeout_sec * 1e9, -0x1p63, 0x1p63); int64_t ti = t == 0x1p63 ? INT64_MAX : (int64_t)t; if (ti > INT64_MAX - time_ns) return INT64_MAX; if (ti <= -time_ns) return 1; return time_ns + ti;}