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Diffstat (limited to 'src/polyp/timeval.h')
-rw-r--r-- | src/polyp/timeval.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/polyp/timeval.h b/src/polyp/timeval.h new file mode 100644 index 00000000..9990d4ca --- /dev/null +++ b/src/polyp/timeval.h @@ -0,0 +1,53 @@ +#ifndef footimevalhfoo +#define footimevalhfoo + +/* $Id$ */ + +/*** + This file is part of polypaudio. + + polypaudio 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. + + polypaudio 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 polypaudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#include <polyp/cdecl.h> +#include <polyp/sample.h> + +/** \file + * Utility functions for handling timeval calculations */ + +PA_C_DECL_BEGIN + +struct timeval; + +/** Return the current 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); + +/** Compare the two timeval structs and return 0 when equal, negative when a < b, positive otherwse */ +int pa_timeval_cmp(const struct timeval *a, const struct timeval *b); + +/** Return the time difference between now and the specified timestamp */ +pa_usec_t pa_timeval_age(const struct timeval *tv); + +/** Add the specified time inmicroseconds to the specified timeval structure */ +struct timeval* pa_timeval_add(struct timeval *tv, pa_usec_t v); + +PA_C_DECL_END + +#endif |