timeval.h

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00001 #ifndef footimevalhfoo
00002 #define footimevalhfoo
00003 
00004 /***
00005   This file is part of PulseAudio.
00006 
00007   Copyright 2004-2006 Lennart Poettering
00008   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
00009 
00010   PulseAudio is free software; you can redistribute it and/or modify
00011   it under the terms of the GNU Lesser General Public License as
00012   published by the Free Software Foundation; either version 2.1 of the
00013   License, or (at your option) any later version.
00014 
00015   PulseAudio is distributed in the hope that it will be useful, but
00016   WITHOUT ANY WARRANTY; without even the implied warranty of
00017   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
00018   Lesser General Public License for more details.
00019 
00020   You should have received a copy of the GNU Lesser General Public
00021   License along with PulseAudio; if not, write to the Free Software
00022   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00023   USA.
00024 ***/
00025 
00026 #include <pulse/cdecl.h>
00027 #include <pulse/gccmacro.h>
00028 #include <pulse/sample.h>
00029 
00033 PA_C_DECL_BEGIN
00034 
00035 #define PA_MSEC_PER_SEC ((pa_usec_t) 1000ULL)
00036 #define PA_USEC_PER_SEC ((pa_usec_t) 1000000ULL)
00037 #define PA_NSEC_PER_SEC ((pa_usec_t) 1000000000ULL)
00038 #define PA_USEC_PER_MSEC ((pa_usec_t) 1000ULL)
00039 #define PA_NSEC_PER_MSEC ((pa_usec_t) 1000000ULL)
00040 #define PA_NSEC_PER_USEC ((pa_usec_t) 1000ULL)
00041 
00042 struct timeval;
00043 
00045 struct timeval *pa_gettimeofday(struct timeval *tv);
00046 
00049 pa_usec_t pa_timeval_diff(const struct timeval *a, const struct timeval *b) PA_GCC_PURE;
00050 
00052 int pa_timeval_cmp(const struct timeval *a, const struct timeval *b) PA_GCC_PURE;
00053 
00055 pa_usec_t pa_timeval_age(const struct timeval *tv);
00056 
00058 struct timeval* pa_timeval_add(struct timeval *tv, pa_usec_t v);
00059 
00061 struct timeval* pa_timeval_sub(struct timeval *tv, pa_usec_t v);
00062 
00064 struct timeval* pa_timeval_store(struct timeval *tv, pa_usec_t v);
00065 
00067 pa_usec_t pa_timeval_load(const struct timeval *tv);
00068 
00069 PA_C_DECL_END
00070 
00071 #endif

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