88 lines
3.0 KiB
C++
88 lines
3.0 KiB
C++
#ifndef footimevalhfoo
|
|
#define footimevalhfoo
|
|
|
|
/***
|
|
This file is part of PulseAudio.
|
|
|
|
Copyright 2004-2006 Lennart Poettering
|
|
Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
|
|
|
|
PulseAudio 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.
|
|
|
|
PulseAudio 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 PulseAudio; if not, see <http://www.gnu.org/licenses/>.
|
|
***/
|
|
|
|
#include <pulse/cdecl.h>
|
|
#include <pulse/gccmacro.h>
|
|
#include <pulse/sample.h>
|
|
#include <pulse/version.h>
|
|
|
|
/** \file
|
|
* Utility functions for handling timeval calculations */
|
|
|
|
PA_C_DECL_BEGIN
|
|
|
|
/** The number of milliseconds in a second */
|
|
#define PA_MSEC_PER_SEC ((pa_usec_t) 1000ULL)
|
|
|
|
/** The number of microseconds in a second */
|
|
#define PA_USEC_PER_SEC ((pa_usec_t) 1000000ULL)
|
|
|
|
/** The number of nanoseconds in a second */
|
|
#define PA_NSEC_PER_SEC ((unsigned long long) 1000000000ULL)
|
|
|
|
/** The number of microseconds in a millisecond */
|
|
#define PA_USEC_PER_MSEC ((pa_usec_t) 1000ULL)
|
|
|
|
/** The number of nanoseconds in a millisecond */
|
|
#define PA_NSEC_PER_MSEC ((unsigned long long) 1000000ULL)
|
|
|
|
/** The number of nanoseconds in a microsecond */
|
|
#define PA_NSEC_PER_USEC ((unsigned long long) 1000ULL)
|
|
|
|
/** Invalid time in usec. \since 0.9.15 */
|
|
#define PA_USEC_INVALID ((pa_usec_t) -1)
|
|
|
|
/** Biggest time in usec. \since 0.9.18 */
|
|
#define PA_USEC_MAX ((pa_usec_t) -2)
|
|
|
|
struct timeval;
|
|
|
|
/** Return the current wallclock timestamp, just like UNIX gettimeofday(). */
|
|
struct timeval *pa_gettimeofday(struct timeval *tv);
|
|
|
|
/** Calculate the difference between the two specified timeval
|
|
* structs. */
|
|
pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) PA_GCC_PURE;
|
|
|
|
/** Compare the two timeval structs and return 0 when equal, negative when a < b, positive otherwise */
|
|
int pa_timeval_cmp(const struct timeval *a, const struct timeval *b) PA_GCC_PURE;
|
|
|
|
/** Return the time difference between now and the specified timestamp */
|
|
pa_usec_t pa_timeval_age(const struct timeval *tv);
|
|
|
|
/** Add the specified time in microseconds to the specified timeval structure */
|
|
struct timeval* pa_timeval_add(struct timeval *tv, pa_usec_t v);
|
|
|
|
/** Subtract the specified time in microseconds to the specified timeval structure. \since 0.9.11 */
|
|
struct timeval* pa_timeval_sub(struct timeval *tv, pa_usec_t v);
|
|
|
|
/** Store the specified usec value in the timeval struct. \since 0.9.7 */
|
|
struct timeval* pa_timeval_store(struct timeval *tv, pa_usec_t v);
|
|
|
|
/** Load the specified tv value and return it in usec. \since 0.9.7 */
|
|
pa_usec_t pa_timeval_load(const struct timeval *tv);
|
|
|
|
PA_C_DECL_END
|
|
|
|
#endif
|